Elena Zannoni
24 years ago
19 changed files with 7125 additions and 128 deletions
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/* compat.c -- backwards compatibility functions. */ |
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/* Copyright (C) 2000 Free Software Foundation, Inc.
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This file is part of the GNU Readline Library, a library for |
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reading lines of text with interactive input and history editing. |
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The GNU Readline Library is free software; you can redistribute it |
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and/or modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 2, or |
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(at your option) any later version. |
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The GNU Readline Library is distributed in the hope that it will be |
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
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of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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The GNU General Public License is often shipped with GNU software, and |
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is generally kept in a file called COPYING or LICENSE. If you do not |
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have a copy of the license, write to the Free Software Foundation, |
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59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
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#define READLINE_LIBRARY |
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#if defined (HAVE_CONFIG_H) |
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# include <config.h> |
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#endif |
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#include <stdio.h> |
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#include "rlstdc.h" |
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#include "rltypedefs.h" |
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extern void rl_free_undo_list PARAMS((void)); |
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extern int rl_maybe_save_line PARAMS((void)); |
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extern int rl_maybe_unsave_line PARAMS((void)); |
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extern int rl_maybe_replace_line PARAMS((void)); |
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extern int rl_crlf PARAMS((void)); |
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extern int rl_ding PARAMS((void)); |
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extern int rl_alphabetic PARAMS((int)); |
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extern char **rl_completion_matches PARAMS((const char *, rl_compentry_func_t *)); |
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extern char *rl_username_completion_function PARAMS((const char *, int)); |
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extern char *rl_filename_completion_function PARAMS((const char *, int)); |
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/* Provide backwards-compatible entry points for old function names. */ |
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void |
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free_undo_list () |
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{ |
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rl_free_undo_list (); |
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} |
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int |
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maybe_replace_line () |
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{ |
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return rl_maybe_replace_line (); |
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} |
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int |
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maybe_save_line () |
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{ |
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return rl_maybe_save_line (); |
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} |
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int |
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maybe_unsave_line () |
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{ |
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return rl_maybe_unsave_line (); |
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} |
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int |
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ding () |
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{ |
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return rl_ding (); |
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} |
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int |
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crlf () |
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{ |
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return rl_crlf (); |
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} |
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int |
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alphabetic (c) |
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int c; |
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{ |
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return rl_alphabetic (c); |
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} |
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char ** |
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completion_matches (s, f) |
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const char *s; |
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rl_compentry_func_t *f; |
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{ |
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return rl_completion_matches (s, f); |
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} |
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char * |
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username_completion_function (s, i) |
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const char *s; |
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int i; |
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{ |
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return rl_username_completion_function (s, i); |
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} |
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char * |
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filename_completion_function (s, i) |
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const char *s; |
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int i; |
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{ |
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return rl_filename_completion_function (s, i); |
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} |
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HISTORY(3) HISTORY(3) |
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NNAAMMEE |
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history - GNU History Library |
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CCOOPPYYRRIIGGHHTT |
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The GNU History Library is Copyright (C) 1989-2002 by the |
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Free Software Foundation, Inc. |
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DDEESSCCRRIIPPTTIIOONN |
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Many programs read input from the user a line at a time. |
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The GNU History library is able to keep track of those |
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lines, associate arbitrary data with each line, and uti- |
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lize information from previous lines in composing new |
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ones. |
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HHIISSTTOORRYY EEXXPPAANNSSIIOONN |
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The history library supports a history expansion feature |
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that is identical to the history expansion in bbaasshh.. This |
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section describes what syntax features are available. |
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History expansions introduce words from the history list |
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into the input stream, making it easy to repeat commands, |
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insert the arguments to a previous command into the cur- |
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rent input line, or fix errors in previous commands |
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quickly. |
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History expansion is usually performed immediately after a |
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complete line is read. It takes place in two parts. The |
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first is to determine which line from the history list to |
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use during substitution. The second is to select portions |
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of that line for inclusion into the current one. The line |
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selected from the history is the _e_v_e_n_t, and the portions |
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of that line that are acted upon are _w_o_r_d_s. Various _m_o_d_i_- |
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_f_i_e_r_s are available to manipulate the selected words. The |
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line is broken into words in the same fashion as bbaasshh does |
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when reading input, so that several words that would oth- |
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erwise be separated are considered one word when sur- |
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rounded by quotes (see the description of hhiissttoorryy__ttookk-- |
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eenniizzee(()) below). History expansions are introduced by the |
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appearance of the history expansion character, which is !! |
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by default. Only backslash (\\) and single quotes can |
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quote the history expansion character. |
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EEvveenntt DDeessiiggnnaattoorrss |
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An event designator is a reference to a command line entry |
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in the history list. |
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!! Start a history substitution, except when followed |
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by a bbllaannkk, newline, = or (. |
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!!_n Refer to command line _n. |
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!!--_n Refer to the current command line minus _n. |
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!!!! Refer to the previous command. This is a synonym |
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for `!-1'. |
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GNU History 4.3 2002 January 31 1 |
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HISTORY(3) HISTORY(3) |
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!!_s_t_r_i_n_g |
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Refer to the most recent command starting with |
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_s_t_r_i_n_g. |
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!!??_s_t_r_i_n_g[[??]] |
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Refer to the most recent command containing _s_t_r_i_n_g. |
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The trailing ?? may be omitted if _s_t_r_i_n_g is followed |
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immediately by a newline. |
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^^_s_t_r_i_n_g_1^^_s_t_r_i_n_g_2^^ |
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Quick substitution. Repeat the last command, |
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replacing _s_t_r_i_n_g_1 with _s_t_r_i_n_g_2. Equivalent to |
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``!!:s/_s_t_r_i_n_g_1/_s_t_r_i_n_g_2/'' (see MMooddiiffiieerrss below). |
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!!## The entire command line typed so far. |
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WWoorrdd DDeessiiggnnaattoorrss |
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Word designators are used to select desired words from the |
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event. A :: separates the event specification from the |
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word designator. It may be omitted if the word designator |
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begins with a ^^, $$, **, --, or %%. Words are numbered from |
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the beginning of the line, with the first word being |
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denoted by 0 (zero). Words are inserted into the current |
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line separated by single spaces. |
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00 ((zzeerroo)) |
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The zeroth word. For the shell, this is the com- |
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mand word. |
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_n The _nth word. |
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^^ The first argument. That is, word 1. |
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$$ The last argument. |
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%% The word matched by the most recent `?_s_t_r_i_n_g?' |
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search. |
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_x--_y A range of words; `-_y' abbreviates `0-_y'. |
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** All of the words but the zeroth. This is a synonym |
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for `_1_-_$'. It is not an error to use ** if there is |
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just one word in the event; the empty string is |
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returned in that case. |
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xx** Abbreviates _x_-_$. |
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xx-- Abbreviates _x_-_$ like xx**, but omits the last word. |
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If a word designator is supplied without an event specifi- |
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cation, the previous command is used as the event. |
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MMooddiiffiieerrss |
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After the optional word designator, there may appear a |
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sequence of one or more of the following modifiers, each |
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preceded by a `:'. |
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hh Remove a trailing file name component, leaving only |
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the head. |
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tt Remove all leading file name components, leaving |
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the tail. |
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rr Remove a trailing suffix of the form _._x_x_x, leaving |
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the basename. |
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ee Remove all but the trailing suffix. |
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pp Print the new command but do not execute it. |
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GNU History 4.3 2002 January 31 2 |
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HISTORY(3) HISTORY(3) |
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qq Quote the substituted words, escaping further sub- |
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stitutions. |
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xx Quote the substituted words as with qq, but break |
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into words at bbllaannkkss and newlines. |
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ss//_o_l_d//_n_e_w// |
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Substitute _n_e_w for the first occurrence of _o_l_d in |
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the event line. Any delimiter can be used in place |
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of /. The final delimiter is optional if it is the |
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last character of the event line. The delimiter |
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may be quoted in _o_l_d and _n_e_w with a single back- |
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slash. If & appears in _n_e_w, it is replaced by _o_l_d. |
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A single backslash will quote the &. If _o_l_d is |
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null, it is set to the last _o_l_d substituted, or, if |
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no previous history substitutions took place, the |
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last _s_t_r_i_n_g in a !!??_s_t_r_i_n_g[[??]] search. |
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&& Repeat the previous substitution. |
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gg Cause changes to be applied over the entire event |
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line. This is used in conjunction with `::ss' (e.g., |
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`::ggss//_o_l_d//_n_e_w//') or `::&&'. If used with `::ss', any |
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delimiter can be used in place of /, and the final |
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delimiter is optional if it is the last character |
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of the event line. |
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PPRROOGGRRAAMMMMIINNGG WWIITTHH HHIISSTTOORRYY FFUUNNCCTTIIOONNSS |
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This section describes how to use the History library in |
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other programs. |
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IInnttrroodduuccttiioonn ttoo HHiissttoorryy |
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The programmer using the History library has available |
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functions for remembering lines on a history list, associ- |
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ating arbitrary data with a line, removing lines from the |
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list, searching through the list for a line containing an |
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arbitrary text string, and referencing any line in the |
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list directly. In addition, a history _e_x_p_a_n_s_i_o_n function |
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is available which provides for a consistent user inter- |
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face across different programs. |
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The user using programs written with the History library |
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has the benefit of a consistent user interface with a set |
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of well-known commands for manipulating the text of previ- |
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ous lines and using that text in new commands. The basic |
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history manipulation commands are identical to the history |
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substitution provided by bbaasshh. |
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If the programmer desires, he can use the Readline |
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library, which includes some history manipulation by |
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default, and has the added advantage of command line edit- |
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ing. |
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Before declaring any functions using any functionality the |
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History library provides in other code, an application |
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writer should include the file _<_r_e_a_d_l_i_n_e_/_h_i_s_t_o_r_y_._h_> in any |
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file that uses the History library's features. It sup- |
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plies extern declarations for all of the library's public |
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GNU History 4.3 2002 January 31 3 |
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HISTORY(3) HISTORY(3) |
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functions and variables, and declares all of the public |
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data structures. |
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HHiissttoorryy SSttoorraaggee |
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The history list is an array of history entries. A his- |
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tory entry is declared as follows: |
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_t_y_p_e_d_e_f _v_o_i_d _* hhiissttddaattaa__tt;; |
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typedef struct _hist_entry { |
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char *line; |
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histdata_t data; |
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} HIST_ENTRY; |
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The history list itself might therefore be declared as |
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_H_I_S_T___E_N_T_R_Y _*_* tthhee__hhiissttoorryy__lliisstt;; |
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The state of the History library is encapsulated into a |
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single structure: |
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/* |
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* A structure used to pass around the current state of the history. |
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*/ |
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typedef struct _hist_state { |
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HIST_ENTRY **entries; /* Pointer to the entries themselves. */ |
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int offset; /* The location pointer within this array. */ |
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int length; /* Number of elements within this array. */ |
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int size; /* Number of slots allocated to this array. */ |
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int flags; |
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} HISTORY_STATE; |
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If the flags member includes HHSS__SSTTIIFFLLEEDD, the history has |
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been stifled. |
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HHiissttoorryy FFuunnccttiioonnss |
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This section describes the calling sequence for the vari- |
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ous functions exported by the GNU History library. |
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IInniittiiaalliizziinngg HHiissttoorryy aanndd SSttaattee MMaannaaggeemmeenntt |
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This section describes functions used to initialize and |
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manage the state of the History library when you want to |
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use the history functions in your program. |
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_v_o_i_d uussiinngg__hhiissttoorryy (_v_o_i_d) |
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Begin a session in which the history functions might be |
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used. This initializes the interactive variables. |
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_H_I_S_T_O_R_Y___S_T_A_T_E _* hhiissttoorryy__ggeett__hhiissttoorryy__ssttaattee (_v_o_i_d) |
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Return a structure describing the current state of the |
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input history. |
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_v_o_i_d hhiissttoorryy__sseett__hhiissttoorryy__ssttaattee (_H_I_S_T_O_R_Y___S_T_A_T_E _*_s_t_a_t_e) |
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GNU History 4.3 2002 January 31 4 |
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HISTORY(3) HISTORY(3) |
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Set the state of the history list according to _s_t_a_t_e. |
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HHiissttoorryy LLiisstt MMaannaaggeemmeenntt |
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These functions manage individual entries on the history |
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list, or set parameters managing the list itself. |
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_v_o_i_d aadddd__hhiissttoorryy (_c_o_n_s_t _c_h_a_r _*_s_t_r_i_n_g) |
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Place _s_t_r_i_n_g at the end of the history list. The associ- |
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ated data field (if any) is set to NNUULLLL. |
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_H_I_S_T___E_N_T_R_Y _* rreemmoovvee__hhiissttoorryy (_i_n_t _w_h_i_c_h) |
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Remove history entry at offset _w_h_i_c_h from the history. |
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The removed element is returned so you can free the line, |
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data, and containing structure. |
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_H_I_S_T___E_N_T_R_Y _* rreeppllaaccee__hhiissttoorryy__eennttrryy (_i_n_t _w_h_i_c_h_, _c_o_n_s_t _c_h_a_r |
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_*_l_i_n_e_, _h_i_s_t_d_a_t_a___t _d_a_t_a) |
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Make the history entry at offset _w_h_i_c_h have _l_i_n_e and _d_a_t_a. |
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This returns the old entry so you can dispose of the data. |
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In the case of an invalid _w_h_i_c_h, a NNUULLLL pointer is |
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returned. |
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_v_o_i_d cclleeaarr__hhiissttoorryy (_v_o_i_d) |
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Clear the history list by deleting all the entries. |
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_v_o_i_d ssttiiffllee__hhiissttoorryy (_i_n_t _m_a_x) |
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Stifle the history list, remembering only the last _m_a_x |
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entries. |
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_i_n_t uunnssttiiffllee__hhiissttoorryy (_v_o_i_d) |
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Stop stifling the history. This returns the previously- |
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set maximum number of history entries (as set by ssttii-- |
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ffllee__hhiissttoorryy(())). history was stifled. The value is posi- |
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tive if the history was stifled, negative if it wasn't. |
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_i_n_t hhiissttoorryy__iiss__ssttiifflleedd (_v_o_i_d) |
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Returns non-zero if the history is stifled, zero if it is |
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not. |
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IInnffoorrmmaattiioonn AAbboouutt tthhee HHiissttoorryy LLiisstt |
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These functions return information about the entire his- |
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tory list or individual list entries. |
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_H_I_S_T___E_N_T_R_Y _*_* hhiissttoorryy__lliisstt (_v_o_i_d) |
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Return a NNUULLLL terminated array of _H_I_S_T___E_N_T_R_Y _* which is |
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the current input history. Element 0 of this list is the |
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beginning of time. If there is no history, return NNUULLLL. |
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_i_n_t wwhheerree__hhiissttoorryy (_v_o_i_d) |
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Returns the offset of the current history element. |
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_H_I_S_T___E_N_T_R_Y _* ccuurrrreenntt__hhiissttoorryy (_v_o_i_d) |
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GNU History 4.3 2002 January 31 5 |
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HISTORY(3) HISTORY(3) |
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Return the history entry at the current position, as |
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determined by wwhheerree__hhiissttoorryy(()). If there is no entry |
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there, return a NNUULLLL pointer. |
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_H_I_S_T___E_N_T_R_Y _* hhiissttoorryy__ggeett (_i_n_t _o_f_f_s_e_t) |
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Return the history entry at position _o_f_f_s_e_t, starting from |
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hhiissttoorryy__bbaassee. If there is no entry there, or if _o_f_f_s_e_t is |
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greater than the history length, return a NNUULLLL pointer. |
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_i_n_t hhiissttoorryy__ttoottaall__bbyytteess (_v_o_i_d) |
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Return the number of bytes that the primary history |
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entries are using. This function returns the sum of the |
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lengths of all the lines in the history. |
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MMoovviinngg AArroouunndd tthhee HHiissttoorryy LLiisstt |
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These functions allow the current index into the history |
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list to be set or changed. |
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_i_n_t hhiissttoorryy__sseett__ppooss (_i_n_t _p_o_s) |
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Set the current history offset to _p_o_s, an absolute index |
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into the list. Returns 1 on success, 0 if _p_o_s is less |
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than zero or greater than the number of history entries. |
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_H_I_S_T___E_N_T_R_Y _* pprreevviioouuss__hhiissttoorryy (_v_o_i_d) |
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Back up the current history offset to the previous history |
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entry, and return a pointer to that entry. If there is no |
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previous entry, return a NNUULLLL pointer. |
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_H_I_S_T___E_N_T_R_Y _* nneexxtt__hhiissttoorryy (_v_o_i_d) |
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Move the current history offset forward to the next his- |
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tory entry, and return the a pointer to that entry. If |
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there is no next entry, return a NNUULLLL pointer. |
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SSeeaarrcchhiinngg tthhee HHiissttoorryy LLiisstt |
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These functions allow searching of the history list for |
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entries containing a specific string. Searching may be |
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performed both forward and backward from the current his- |
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tory position. The search may be _a_n_c_h_o_r_e_d, meaning that |
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the string must match at the beginning of the history |
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entry. |
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|
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_i_n_t hhiissttoorryy__sseeaarrcchh (_c_o_n_s_t _c_h_a_r _*_s_t_r_i_n_g_, _i_n_t _d_i_r_e_c_t_i_o_n) |
|||
Search the history for _s_t_r_i_n_g, starting at the current |
|||
history offset. If _d_i_r_e_c_t_i_o_n is less than 0, then the |
|||
search is through previous entries, otherwise through sub- |
|||
sequent entries. If _s_t_r_i_n_g is found, then the current |
|||
history index is set to that history entry, and the value |
|||
returned is the offset in the line of the entry where |
|||
_s_t_r_i_n_g was found. Otherwise, nothing is changed, and a -1 |
|||
is returned. |
|||
|
|||
_i_n_t hhiissttoorryy__sseeaarrcchh__pprreeffiixx (_c_o_n_s_t _c_h_a_r _*_s_t_r_i_n_g_, _i_n_t |
|||
|
|||
|
|||
|
|||
GNU History 4.3 2002 January 31 6 |
|||
|
|||
|
|||
|
|||
|
|||
|
|||
HISTORY(3) HISTORY(3) |
|||
|
|||
|
|||
_d_i_r_e_c_t_i_o_n) |
|||
Search the history for _s_t_r_i_n_g, starting at the current |
|||
history offset. The search is anchored: matching lines |
|||
must begin with _s_t_r_i_n_g. If _d_i_r_e_c_t_i_o_n is less than 0, then |
|||
the search is through previous entries, otherwise through |
|||
subsequent entries. If _s_t_r_i_n_g is found, then the current |
|||
history index is set to that entry, and the return value |
|||
is 0. Otherwise, nothing is changed, and a -1 is |
|||
returned. |
|||
|
|||
_i_n_t hhiissttoorryy__sseeaarrcchh__ppooss (_c_o_n_s_t _c_h_a_r _*_s_t_r_i_n_g_, _i_n_t _d_i_r_e_c_t_i_o_n_, |
|||
_i_n_t _p_o_s) |
|||
Search for _s_t_r_i_n_g in the history list, starting at _p_o_s, an |
|||
absolute index into the list. If _d_i_r_e_c_t_i_o_n is negative, |
|||
the search proceeds backward from _p_o_s, otherwise forward. |
|||
Returns the absolute index of the history element where |
|||
_s_t_r_i_n_g was found, or -1 otherwise. |
|||
|
|||
|
|||
MMaannaaggiinngg tthhee HHiissttoorryy FFiillee |
|||
The History library can read the history from and write it |
|||
to a file. This section documents the functions for man- |
|||
aging a history file. |
|||
|
|||
_i_n_t rreeaadd__hhiissttoorryy (_c_o_n_s_t _c_h_a_r _*_f_i_l_e_n_a_m_e) |
|||
Add the contents of _f_i_l_e_n_a_m_e to the history list, a line |
|||
at a time. If _f_i_l_e_n_a_m_e is NNUULLLL, then read from _~_/_._h_i_s_- |
|||
_t_o_r_y. Returns 0 if successful, or eerrrrnnoo if not. |
|||
|
|||
_i_n_t rreeaadd__hhiissttoorryy__rraannggee (_c_o_n_s_t _c_h_a_r _*_f_i_l_e_n_a_m_e_, _i_n_t _f_r_o_m_, |
|||
_i_n_t _t_o) |
|||
Read a range of lines from _f_i_l_e_n_a_m_e, adding them to the |
|||
history list. Start reading at line _f_r_o_m and end at _t_o. |
|||
If _f_r_o_m is zero, start at the beginning. If _t_o is less |
|||
than _f_r_o_m, then read until the end of the file. If _f_i_l_e_- |
|||
_n_a_m_e is NNUULLLL, then read from _~_/_._h_i_s_t_o_r_y. Returns 0 if |
|||
successful, or eerrrrnnoo if not. |
|||
|
|||
_i_n_t wwrriittee__hhiissttoorryy (_c_o_n_s_t _c_h_a_r _*_f_i_l_e_n_a_m_e) |
|||
Write the current history to _f_i_l_e_n_a_m_e, overwriting _f_i_l_e_- |
|||
_n_a_m_e if necessary. If _f_i_l_e_n_a_m_e is NNUULLLL, then write the |
|||
history list to _~_/_._h_i_s_t_o_r_y. Returns 0 on success, or |
|||
eerrrrnnoo on a read or write error. |
|||
|
|||
|
|||
_i_n_t aappppeenndd__hhiissttoorryy (_i_n_t _n_e_l_e_m_e_n_t_s_, _c_o_n_s_t _c_h_a_r _*_f_i_l_e_n_a_m_e) |
|||
Append the last _n_e_l_e_m_e_n_t_s of the history list to _f_i_l_e_n_a_m_e. |
|||
If _f_i_l_e_n_a_m_e is NNUULLLL, then append to _~_/_._h_i_s_t_o_r_y. Returns 0 |
|||
on success, or eerrrrnnoo on a read or write error. |
|||
|
|||
_i_n_t hhiissttoorryy__ttrruunnccaattee__ffiillee (_c_o_n_s_t _c_h_a_r _*_f_i_l_e_n_a_m_e_, _i_n_t |
|||
_n_l_i_n_e_s) |
|||
Truncate the history file _f_i_l_e_n_a_m_e, leaving only the last |
|||
_n_l_i_n_e_s lines. If _f_i_l_e_n_a_m_e is NNUULLLL, then _~_/_._h_i_s_t_o_r_y is |
|||
|
|||
|
|||
|
|||
GNU History 4.3 2002 January 31 7 |
|||
|
|||
|
|||
|
|||
|
|||
|
|||
HISTORY(3) HISTORY(3) |
|||
|
|||
|
|||
truncated. Returns 0 on success, or eerrrrnnoo on failure. |
|||
|
|||
|
|||
HHiissttoorryy EExxppaannssiioonn |
|||
These functions implement history expansion. |
|||
|
|||
_i_n_t hhiissttoorryy__eexxppaanndd (_c_h_a_r _*_s_t_r_i_n_g_, _c_h_a_r _*_*_o_u_t_p_u_t) |
|||
Expand _s_t_r_i_n_g, placing the result into _o_u_t_p_u_t, a pointer |
|||
to a string. Returns: |
|||
0 If no expansions took place (or, if the only |
|||
change in the text was the removal of escape |
|||
characters preceding the history expansion |
|||
character); |
|||
1 if expansions did take place; |
|||
-1 if there was an error in expansion; |
|||
2 if the returned line should be displayed, |
|||
but not executed, as with the ::pp modifier. |
|||
If an error ocurred in expansion, then _o_u_t_p_u_t contains a |
|||
descriptive error message. |
|||
|
|||
_c_h_a_r _* ggeett__hhiissttoorryy__eevveenntt (_c_o_n_s_t _c_h_a_r _*_s_t_r_i_n_g_, _i_n_t _*_c_i_n_d_e_x_, |
|||
_i_n_t _q_c_h_a_r) |
|||
Returns the text of the history event beginning at _s_t_r_i_n_g |
|||
+ _*_c_i_n_d_e_x. _*_c_i_n_d_e_x is modified to point to after the |
|||
event specifier. At function entry, _c_i_n_d_e_x points to the |
|||
index into _s_t_r_i_n_g where the history event specification |
|||
begins. _q_c_h_a_r is a character that is allowed to end the |
|||
event specification in addition to the ``normal'' termi- |
|||
nating characters. |
|||
|
|||
_c_h_a_r _*_* hhiissttoorryy__ttookkeenniizzee (_c_o_n_s_t _c_h_a_r _*_s_t_r_i_n_g) |
|||
Return an array of tokens parsed out of _s_t_r_i_n_g, much as |
|||
the shell might. The tokens are split on the characters |
|||
in the hhiissttoorryy__wwoorrdd__ddeelliimmiitteerrss variable, and shell quoting |
|||
conventions are obeyed. |
|||
|
|||
_c_h_a_r _* hhiissttoorryy__aarrgg__eexxttrraacctt (_i_n_t _f_i_r_s_t_, _i_n_t _l_a_s_t_, _c_o_n_s_t |
|||
_c_h_a_r _*_s_t_r_i_n_g) |
|||
Extract a string segment consisting of the _f_i_r_s_t through |
|||
_l_a_s_t arguments present in _s_t_r_i_n_g. Arguments are split |
|||
using hhiissttoorryy__ttookkeenniizzee(()). |
|||
|
|||
|
|||
HHiissttoorryy VVaarriiaabblleess |
|||
This section describes the externally-visible variables |
|||
exported by the GNU History Library. |
|||
|
|||
_i_n_t hhiissttoorryy__bbaassee |
|||
The logical offset of the first entry in the history list. |
|||
|
|||
_i_n_t hhiissttoorryy__lleennggtthh |
|||
The number of entries currently stored in the history |
|||
list. |
|||
|
|||
|
|||
|
|||
|
|||
GNU History 4.3 2002 January 31 8 |
|||
|
|||
|
|||
|
|||
|
|||
|
|||
HISTORY(3) HISTORY(3) |
|||
|
|||
|
|||
_i_n_t hhiissttoorryy__mmaaxx__eennttrriieess |
|||
The maximum number of history entries. This must be |
|||
changed using ssttiiffllee__hhiissttoorryy(()). |
|||
|
|||
_c_h_a_r hhiissttoorryy__eexxppaannssiioonn__cchhaarr |
|||
The character that introduces a history event. The |
|||
default is !!. Setting this to 0 inhibits history expan- |
|||
sion. |
|||
|
|||
_c_h_a_r hhiissttoorryy__ssuubbsstt__cchhaarr |
|||
The character that invokes word substitution if found at |
|||
the start of a line. The default is ^^. |
|||
|
|||
_c_h_a_r hhiissttoorryy__ccoommmmeenntt__cchhaarr |
|||
During tokenization, if this character is seen as the |
|||
first character of a word, then it and all subsequent |
|||
characters up to a newline are ignored, suppressing his- |
|||
tory expansion for the remainder of the line. This is |
|||
disabled by default. |
|||
|
|||
_c_h_a_r _* hhiissttoorryy__wwoorrdd__ddeelliimmiitteerrss |
|||
The characters that separate tokens for hhiissttoorryy__ttookk-- |
|||
eenniizzee(()). The default value is "" \\tt\\nn(())<<>>;;&&||"". |
|||
|
|||
_c_h_a_r _* hhiissttoorryy__nnoo__eexxppaanndd__cchhaarrss |
|||
The list of characters which inhibit history expansion if |
|||
found immediately following hhiissttoorryy__eexxppaannssiioonn__cchhaarr. The |
|||
default is space, tab, newline, \\rr, and ==. |
|||
|
|||
_c_h_a_r _* hhiissttoorryy__sseeaarrcchh__ddeelliimmiitteerr__cchhaarrss |
|||
The list of additional characters which can delimit a his- |
|||
tory search string, in addition to space, tab, _: and _? in |
|||
the case of a substring search. The default is empty. |
|||
|
|||
_i_n_t hhiissttoorryy__qquuootteess__iinnhhiibbiitt__eexxppaannssiioonn |
|||
If non-zero, single-quoted words are not scanned for the |
|||
history expansion character. The default value is 0. |
|||
|
|||
_r_l___l_i_n_e_b_u_f___f_u_n_c___t _* hhiissttoorryy__iinnhhiibbiitt__eexxppaannssiioonn__ffuunnccttiioonn |
|||
This should be set to the address of a function that takes |
|||
two arguments: a cchhaarr ** (_s_t_r_i_n_g) and an iinntt index into |
|||
that string (_i). It should return a non-zero value if the |
|||
history expansion starting at _s_t_r_i_n_g_[_i_] should not be per- |
|||
formed; zero if the expansion should be done. It is |
|||
intended for use by applications like bbaasshh that use the |
|||
history expansion character for additional purposes. By |
|||
default, this variable is set to NNUULLLL. |
|||
|
|||
FFIILLEESS |
|||
_~_/_._h_i_s_t_o_r_y |
|||
Default filename for reading and writing saved his- |
|||
tory |
|||
|
|||
|
|||
|
|||
|
|||
|
|||
GNU History 4.3 2002 January 31 9 |
|||
|
|||
|
|||
|
|||
|
|||
|
|||
HISTORY(3) HISTORY(3) |
|||
|
|||
|
|||
SSEEEE AALLSSOO |
|||
_T_h_e _G_n_u _R_e_a_d_l_i_n_e _L_i_b_r_a_r_y, Brian Fox and Chet Ramey |
|||
_T_h_e _G_n_u _H_i_s_t_o_r_y _L_i_b_r_a_r_y, Brian Fox and Chet Ramey |
|||
_b_a_s_h(1) |
|||
_r_e_a_d_l_i_n_e(3) |
|||
|
|||
AAUUTTHHOORRSS |
|||
Brian Fox, Free Software Foundation |
|||
bfox@gnu.org |
|||
|
|||
Chet Ramey, Case Western Reserve University |
|||
chet@ins.CWRU.Edu |
|||
|
|||
BBUUGG RREEPPOORRTTSS |
|||
If you find a bug in the hhiissttoorryy library, you should |
|||
report it. But first, you should make sure that it really |
|||
is a bug, and that it appears in the latest version of the |
|||
hhiissttoorryy library that you have. |
|||
|
|||
Once you have determined that a bug actually exists, mail |
|||
a bug report to _b_u_g_-_r_e_a_d_l_i_n_e@_g_n_u_._o_r_g. If you have a fix, |
|||
you are welcome to mail that as well! Suggestions and |
|||
`philosophical' bug reports may be mailed to _b_u_g_-_r_e_a_d_- |
|||
_l_i_n_e@_g_n_u_._o_r_g or posted to the Usenet newsgroup |
|||
ggnnuu..bbaasshh..bbuugg. |
|||
|
|||
Comments and bug reports concerning this manual page |
|||
should be directed to _c_h_e_t_@_i_n_s_._C_W_R_U_._E_d_u. |
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
|
|||
GNU History 4.3 2002 January 31 10 |
|||
|
|||
|
|||
@ -0,0 +1,640 @@ |
|||
.\" |
|||
.\" MAN PAGE COMMENTS to |
|||
.\" |
|||
.\" Chet Ramey |
|||
.\" Information Network Services |
|||
.\" Case Western Reserve University |
|||
.\" chet@ins.CWRU.Edu |
|||
.\" |
|||
.\" Last Change: Thu Jan 31 16:08:07 EST 2002 |
|||
.\" |
|||
.TH HISTORY 3 "2002 January 31" "GNU History 4.3" |
|||
.\" |
|||
.\" File Name macro. This used to be `.PN', for Path Name, |
|||
.\" but Sun doesn't seem to like that very much. |
|||
.\" |
|||
.de FN |
|||
\fI\|\\$1\|\fP |
|||
.. |
|||
.ds lp \fR\|(\fP |
|||
.ds rp \fR\|)\fP |
|||
.\" FnN return-value fun-name N arguments |
|||
.de Fn1 |
|||
\fI\\$1\fP \fB\\$2\fP \\*(lp\fI\\$3\fP\\*(rp |
|||
.br |
|||
.. |
|||
.de Fn2 |
|||
.if t \fI\\$1\fP \fB\\$2\fP \\*(lp\fI\\$3,\|\\$4\fP\\*(rp |
|||
.if n \fI\\$1\fP \fB\\$2\fP \\*(lp\fI\\$3, \\$4\fP\\*(rp |
|||
.br |
|||
.. |
|||
.de Fn3 |
|||
.if t \fI\\$1\fP \fB\\$2\fP \\*(lp\fI\\$3,\|\\$4,\|\\$5\fP\|\\*(rp |
|||
.if n \fI\\$1\fP \fB\\$2\fP \\*(lp\fI\\$3, \\$4, \\$5\fP\\*(rp |
|||
.br |
|||
.. |
|||
.de Vb |
|||
\fI\\$1\fP \fB\\$2\fP |
|||
.br |
|||
.. |
|||
.SH NAME |
|||
history \- GNU History Library |
|||
.SH COPYRIGHT |
|||
.if t The GNU History Library is Copyright \(co 1989-2002 by the Free Software Foundation, Inc. |
|||
.if n The GNU History Library is Copyright (C) 1989-2002 by the Free Software Foundation, Inc. |
|||
.SH DESCRIPTION |
|||
Many programs read input from the user a line at a time. The GNU |
|||
History library is able to keep track of those lines, associate arbitrary |
|||
data with each line, and utilize information from previous lines in |
|||
composing new ones. |
|||
.PP |
|||
.SH "HISTORY EXPANSION" |
|||
.PP |
|||
The history library supports a history expansion feature that |
|||
is identical to the history expansion in |
|||
.BR bash. |
|||
This section describes what syntax features are available. |
|||
.PP |
|||
History expansions introduce words from the history list into |
|||
the input stream, making it easy to repeat commands, insert the |
|||
arguments to a previous command into the current input line, or |
|||
fix errors in previous commands quickly. |
|||
.PP |
|||
History expansion is usually performed immediately after a complete line |
|||
is read. |
|||
It takes place in two parts. |
|||
The first is to determine which line from the history list |
|||
to use during substitution. |
|||
The second is to select portions of that line for inclusion into |
|||
the current one. |
|||
The line selected from the history is the \fIevent\fP, |
|||
and the portions of that line that are acted upon are \fIwords\fP. |
|||
Various \fImodifiers\fP are available to manipulate the selected words. |
|||
The line is broken into words in the same fashion as \fBbash\fP |
|||
does when reading input, |
|||
so that several words that would otherwise be separated |
|||
are considered one word when surrounded by quotes (see the |
|||
description of \fBhistory_tokenize()\fP below). |
|||
History expansions are introduced by the appearance of the |
|||
history expansion character, which is \^\fB!\fP\^ by default. |
|||
Only backslash (\^\fB\e\fP\^) and single quotes can quote |
|||
the history expansion character. |
|||
.SS Event Designators |
|||
.PP |
|||
An event designator is a reference to a command line entry in the |
|||
history list. |
|||
.PP |
|||
.PD 0 |
|||
.TP |
|||
.B ! |
|||
Start a history substitution, except when followed by a |
|||
.BR blank , |
|||
newline, = or (. |
|||
.TP |
|||
.B !\fIn\fR |
|||
Refer to command line |
|||
.IR n . |
|||
.TP |
|||
.B !\-\fIn\fR |
|||
Refer to the current command line minus |
|||
.IR n . |
|||
.TP |
|||
.B !! |
|||
Refer to the previous command. This is a synonym for `!\-1'. |
|||
.TP |
|||
.B !\fIstring\fR |
|||
Refer to the most recent command starting with |
|||
.IR string . |
|||
.TP |
|||
.B !?\fIstring\fR\fB[?]\fR |
|||
Refer to the most recent command containing |
|||
.IR string . |
|||
The trailing \fB?\fP may be omitted if |
|||
.I string |
|||
is followed immediately by a newline. |
|||
.TP |
|||
.B \d\s+2^\s-2\u\fIstring1\fP\d\s+2^\s-2\u\fIstring2\fP\d\s+2^\s-2\u |
|||
Quick substitution. Repeat the last command, replacing |
|||
.I string1 |
|||
with |
|||
.IR string2 . |
|||
Equivalent to |
|||
``!!:s/\fIstring1\fP/\fIstring2\fP/'' |
|||
(see \fBModifiers\fP below). |
|||
.TP |
|||
.B !# |
|||
The entire command line typed so far. |
|||
.PD |
|||
.SS Word Designators |
|||
.PP |
|||
Word designators are used to select desired words from the event. |
|||
A |
|||
.B : |
|||
separates the event specification from the word designator. |
|||
It may be omitted if the word designator begins with a |
|||
.BR ^ , |
|||
.BR $ , |
|||
.BR * , |
|||
.BR \- , |
|||
or |
|||
.BR % . |
|||
Words are numbered from the beginning of the line, |
|||
with the first word being denoted by 0 (zero). |
|||
Words are inserted into the current line separated by single spaces. |
|||
.PP |
|||
.PD 0 |
|||
.TP |
|||
.B 0 (zero) |
|||
The zeroth word. For the shell, this is the command |
|||
word. |
|||
.TP |
|||
.I n |
|||
The \fIn\fRth word. |
|||
.TP |
|||
.B ^ |
|||
The first argument. That is, word 1. |
|||
.TP |
|||
.B $ |
|||
The last argument. |
|||
.TP |
|||
.B % |
|||
The word matched by the most recent `?\fIstring\fR?' search. |
|||
.TP |
|||
.I x\fB\-\fPy |
|||
A range of words; `\-\fIy\fR' abbreviates `0\-\fIy\fR'. |
|||
.TP |
|||
.B * |
|||
All of the words but the zeroth. This is a synonym |
|||
for `\fI1\-$\fP'. It is not an error to use |
|||
.B * |
|||
if there is just one |
|||
word in the event; the empty string is returned in that case. |
|||
.TP |
|||
.B x* |
|||
Abbreviates \fIx\-$\fP. |
|||
.TP |
|||
.B x\- |
|||
Abbreviates \fIx\-$\fP like \fBx*\fP, but omits the last word. |
|||
.PD |
|||
.PP |
|||
If a word designator is supplied without an event specification, the |
|||
previous command is used as the event. |
|||
.SS Modifiers |
|||
.PP |
|||
After the optional word designator, there may appear a sequence of |
|||
one or more of the following modifiers, each preceded by a `:'. |
|||
.PP |
|||
.PD 0 |
|||
.PP |
|||
.TP |
|||
.B h |
|||
Remove a trailing file name component, leaving only the head. |
|||
.TP |
|||
.B t |
|||
Remove all leading file name components, leaving the tail. |
|||
.TP |
|||
.B r |
|||
Remove a trailing suffix of the form \fI.xxx\fP, leaving the |
|||
basename. |
|||
.TP |
|||
.B e |
|||
Remove all but the trailing suffix. |
|||
.TP |
|||
.B p |
|||
Print the new command but do not execute it. |
|||
.TP |
|||
.B q |
|||
Quote the substituted words, escaping further substitutions. |
|||
.TP |
|||
.B x |
|||
Quote the substituted words as with |
|||
.BR q , |
|||
but break into words at |
|||
.B blanks |
|||
and newlines. |
|||
.TP |
|||
.B s/\fIold\fP/\fInew\fP/ |
|||
Substitute |
|||
.I new |
|||
for the first occurrence of |
|||
.I old |
|||
in the event line. Any delimiter can be used in place of /. The |
|||
final delimiter is optional if it is the last character of the |
|||
event line. The delimiter may be quoted in |
|||
.I old |
|||
and |
|||
.I new |
|||
with a single backslash. If & appears in |
|||
.IR new , |
|||
it is replaced by |
|||
.IR old . |
|||
A single backslash will quote the &. If |
|||
.I old |
|||
is null, it is set to the last |
|||
.I old |
|||
substituted, or, if no previous history substitutions took place, |
|||
the last |
|||
.I string |
|||
in a |
|||
.B !?\fIstring\fR\fB[?]\fR |
|||
search. |
|||
.TP |
|||
.B & |
|||
Repeat the previous substitution. |
|||
.TP |
|||
.B g |
|||
Cause changes to be applied over the entire event line. This is |
|||
used in conjunction with `\fB:s\fP' (e.g., `\fB:gs/\fIold\fP/\fInew\fP/\fR') |
|||
or `\fB:&\fP'. If used with |
|||
`\fB:s\fP', any delimiter can be used |
|||
in place of /, and the final delimiter is optional |
|||
if it is the last character of the event line. |
|||
.PD |
|||
.SH "PROGRAMMING WITH HISTORY FUNCTIONS" |
|||
This section describes how to use the History library in other programs. |
|||
.SS Introduction to History |
|||
.PP |
|||
The programmer using the History library has available functions |
|||
for remembering lines on a history list, associating arbitrary data |
|||
with a line, removing lines from the list, searching through the list |
|||
for a line containing an arbitrary text string, and referencing any line |
|||
in the list directly. In addition, a history \fIexpansion\fP function |
|||
is available which provides for a consistent user interface across |
|||
different programs. |
|||
.PP |
|||
The user using programs written with the History library has the |
|||
benefit of a consistent user interface with a set of well-known |
|||
commands for manipulating the text of previous lines and using that text |
|||
in new commands. The basic history manipulation commands are |
|||
identical to |
|||
the history substitution provided by \fBbash\fP. |
|||
.PP |
|||
If the programmer desires, he can use the Readline library, which |
|||
includes some history manipulation by default, and has the added |
|||
advantage of command line editing. |
|||
.PP |
|||
Before declaring any functions using any functionality the History |
|||
library provides in other code, an application writer should include |
|||
the file |
|||
.FN <readline/history.h> |
|||
in any file that uses the |
|||
History library's features. It supplies extern declarations for all |
|||
of the library's public functions and variables, and declares all of |
|||
the public data structures. |
|||
|
|||
.SS History Storage |
|||
.PP |
|||
The history list is an array of history entries. A history entry is |
|||
declared as follows: |
|||
.PP |
|||
.Vb "typedef void *" histdata_t; |
|||
.PP |
|||
.nf |
|||
typedef struct _hist_entry { |
|||
char *line; |
|||
histdata_t data; |
|||
} HIST_ENTRY; |
|||
.fi |
|||
.PP |
|||
The history list itself might therefore be declared as |
|||
.PP |
|||
.Vb "HIST_ENTRY **" the_history_list; |
|||
.PP |
|||
The state of the History library is encapsulated into a single structure: |
|||
.PP |
|||
.nf |
|||
/* |
|||
* A structure used to pass around the current state of the history. |
|||
*/ |
|||
typedef struct _hist_state { |
|||
HIST_ENTRY **entries; /* Pointer to the entries themselves. */ |
|||
int offset; /* The location pointer within this array. */ |
|||
int length; /* Number of elements within this array. */ |
|||
int size; /* Number of slots allocated to this array. */ |
|||
int flags; |
|||
} HISTORY_STATE; |
|||
.fi |
|||
.PP |
|||
If the flags member includes \fBHS_STIFLED\fP, the history has been |
|||
stifled. |
|||
.SH "History Functions" |
|||
.PP |
|||
This section describes the calling sequence for the various functions |
|||
exported by the GNU History library. |
|||
.SS Initializing History and State Management |
|||
This section describes functions used to initialize and manage |
|||
the state of the History library when you want to use the history |
|||
functions in your program. |
|||
|
|||
.Fn1 void using_history void |
|||
Begin a session in which the history functions might be used. This |
|||
initializes the interactive variables. |
|||
|
|||
.Fn1 "HISTORY_STATE *" history_get_history_state void |
|||
Return a structure describing the current state of the input history. |
|||
|
|||
.Fn1 void history_set_history_state "HISTORY_STATE *state" |
|||
Set the state of the history list according to \fIstate\fP. |
|||
|
|||
.SS History List Management |
|||
|
|||
These functions manage individual entries on the history list, or set |
|||
parameters managing the list itself. |
|||
|
|||
.Fn1 void add_history "const char *string" |
|||
Place \fIstring\fP at the end of the history list. The associated data |
|||
field (if any) is set to \fBNULL\fP. |
|||
|
|||
.Fn1 "HIST_ENTRY *" remove_history "int which" |
|||
Remove history entry at offset \fIwhich\fP from the history. The |
|||
removed element is returned so you can free the line, data, |
|||
and containing structure. |
|||
|
|||
.Fn3 "HIST_ENTRY *" replace_history_entry "int which" "const char *line" "histdata_t data" |
|||
Make the history entry at offset \fIwhich\fP have \fIline\fP and \fIdata\fP. |
|||
This returns the old entry so you can dispose of the data. In the case |
|||
of an invalid \fIwhich\fP, a \fBNULL\fP pointer is returned. |
|||
|
|||
.Fn1 void clear_history "void" |
|||
Clear the history list by deleting all the entries. |
|||
|
|||
.Fn1 void stifle_history "int max" |
|||
Stifle the history list, remembering only the last \fImax\fP entries. |
|||
|
|||
.Fn1 int unstifle_history "void" |
|||
Stop stifling the history. This returns the previously-set |
|||
maximum number of history entries (as set by \fBstifle_history()\fP). |
|||
history was stifled. The value is positive if the history was |
|||
stifled, negative if it wasn't. |
|||
|
|||
.Fn1 int history_is_stifled "void" |
|||
Returns non-zero if the history is stifled, zero if it is not. |
|||
|
|||
.SS Information About the History List |
|||
|
|||
These functions return information about the entire history list or |
|||
individual list entries. |
|||
|
|||
.Fn1 "HIST_ENTRY **" history_list "void" |
|||
Return a \fBNULL\fP terminated array of \fIHIST_ENTRY *\fP which is the |
|||
current input history. Element 0 of this list is the beginning of time. |
|||
If there is no history, return \fBNULL\fP. |
|||
|
|||
.Fn1 int where_history "void" |
|||
Returns the offset of the current history element. |
|||
|
|||
.Fn1 "HIST_ENTRY *" current_history "void" |
|||
Return the history entry at the current position, as determined by |
|||
\fBwhere_history()\fP. If there is no entry there, return a \fBNULL\fP |
|||
pointer. |
|||
|
|||
.Fn1 "HIST_ENTRY *" history_get "int offset" |
|||
Return the history entry at position \fIoffset\fP, starting from |
|||
\fBhistory_base\fP. |
|||
If there is no entry there, or if \fIoffset\fP |
|||
is greater than the history length, return a \fBNULL\fP pointer. |
|||
|
|||
.Fn1 int history_total_bytes "void" |
|||
Return the number of bytes that the primary history entries are using. |
|||
This function returns the sum of the lengths of all the lines in the |
|||
history. |
|||
|
|||
.SS Moving Around the History List |
|||
|
|||
These functions allow the current index into the history list to be |
|||
set or changed. |
|||
|
|||
.Fn1 int history_set_pos "int pos" |
|||
Set the current history offset to \fIpos\fP, an absolute index |
|||
into the list. |
|||
Returns 1 on success, 0 if \fIpos\fP is less than zero or greater |
|||
than the number of history entries. |
|||
|
|||
.Fn1 "HIST_ENTRY *" previous_history "void" |
|||
Back up the current history offset to the previous history entry, and |
|||
return a pointer to that entry. If there is no previous entry, return |
|||
a \fBNULL\fP pointer. |
|||
|
|||
.Fn1 "HIST_ENTRY *" next_history "void" |
|||
Move the current history offset forward to the next history entry, and |
|||
return the a pointer to that entry. If there is no next entry, return |
|||
a \fBNULL\fP pointer. |
|||
|
|||
.SS Searching the History List |
|||
|
|||
These functions allow searching of the history list for entries containing |
|||
a specific string. Searching may be performed both forward and backward |
|||
from the current history position. The search may be \fIanchored\fP, |
|||
meaning that the string must match at the beginning of the history entry. |
|||
|
|||
.Fn2 int history_search "const char *string" "int direction" |
|||
Search the history for \fIstring\fP, starting at the current history offset. |
|||
If \fIdirection\fP is less than 0, then the search is through |
|||
previous entries, otherwise through subsequent entries. |
|||
If \fIstring\fP is found, then |
|||
the current history index is set to that history entry, and the value |
|||
returned is the offset in the line of the entry where |
|||
\fIstring\fP was found. Otherwise, nothing is changed, and a -1 is |
|||
returned. |
|||
|
|||
.Fn2 int history_search_prefix "const char *string" "int direction" |
|||
Search the history for \fIstring\fP, starting at the current history |
|||
offset. The search is anchored: matching lines must begin with |
|||
\fIstring\fP. If \fIdirection\fP is less than 0, then the search is |
|||
through previous entries, otherwise through subsequent entries. |
|||
If \fIstring\fP is found, then the |
|||
current history index is set to that entry, and the return value is 0. |
|||
Otherwise, nothing is changed, and a -1 is returned. |
|||
|
|||
.Fn3 int history_search_pos "const char *string" "int direction" "int pos" |
|||
Search for \fIstring\fP in the history list, starting at \fIpos\fP, an |
|||
absolute index into the list. If \fIdirection\fP is negative, the search |
|||
proceeds backward from \fIpos\fP, otherwise forward. Returns the absolute |
|||
index of the history element where \fIstring\fP was found, or -1 otherwise. |
|||
|
|||
.SS Managing the History File |
|||
The History library can read the history from and write it to a file. |
|||
This section documents the functions for managing a history file. |
|||
|
|||
.Fn1 int read_history "const char *filename" |
|||
Add the contents of \fIfilename\fP to the history list, a line at a time. |
|||
If \fIfilename\fP is \fBNULL\fP, then read from \fI~/.history\fP. |
|||
Returns 0 if successful, or \fBerrno\fP if not. |
|||
|
|||
.Fn3 int read_history_range "const char *filename" "int from" "int to" |
|||
Read a range of lines from \fIfilename\fP, adding them to the history list. |
|||
Start reading at line \fIfrom\fP and end at \fIto\fP. |
|||
If \fIfrom\fP is zero, start at the beginning. If \fIto\fP is less than |
|||
\fIfrom\fP, then read until the end of the file. If \fIfilename\fP is |
|||
\fBNULL\fP, then read from \fI~/.history\fP. Returns 0 if successful, |
|||
or \fBerrno\fP if not. |
|||
|
|||
.Fn1 int write_history "const char *filename" |
|||
Write the current history to \fIfilename\fP, overwriting \fIfilename\fP |
|||
if necessary. |
|||
If \fIfilename\fP is \fBNULL\fP, then write the history list to \fI~/.history\fP. |
|||
Returns 0 on success, or \fBerrno\fP on a read or write error. |
|||
|
|||
|
|||
.Fn2 int append_history "int nelements" "const char *filename" |
|||
Append the last \fInelements\fP of the history list to \fIfilename\fP. |
|||
If \fIfilename\fP is \fBNULL\fP, then append to \fI~/.history\fP. |
|||
Returns 0 on success, or \fBerrno\fP on a read or write error. |
|||
|
|||
.Fn2 int history_truncate_file "const char *filename" "int nlines" |
|||
Truncate the history file \fIfilename\fP, leaving only the last |
|||
\fInlines\fP lines. |
|||
If \fIfilename\fP is \fBNULL\fP, then \fI~/.history\fP is truncated. |
|||
Returns 0 on success, or \fBerrno\fP on failure. |
|||
|
|||
.SS History Expansion |
|||
|
|||
These functions implement history expansion. |
|||
|
|||
.Fn2 int history_expand "char *string" "char **output" |
|||
Expand \fIstring\fP, placing the result into \fIoutput\fP, a pointer |
|||
to a string. Returns: |
|||
.RS |
|||
.PD 0 |
|||
.TP |
|||
0 |
|||
If no expansions took place (or, if the only change in |
|||
the text was the removal of escape characters preceding the history expansion |
|||
character); |
|||
.TP |
|||
1 |
|||
if expansions did take place; |
|||
.TP |
|||
-1 |
|||
if there was an error in expansion; |
|||
.TP |
|||
2 |
|||
if the returned line should be displayed, but not executed, |
|||
as with the \fB:p\fP modifier. |
|||
.PD |
|||
.RE |
|||
If an error ocurred in expansion, then \fIoutput\fP contains a descriptive |
|||
error message. |
|||
|
|||
.Fn3 "char *" get_history_event "const char *string" "int *cindex" "int qchar" |
|||
Returns the text of the history event beginning at \fIstring\fP + |
|||
\fI*cindex\fP. \fI*cindex\fP is modified to point to after the event |
|||
specifier. At function entry, \fIcindex\fP points to the index into |
|||
\fIstring\fP where the history event specification begins. \fIqchar\fP |
|||
is a character that is allowed to end the event specification in addition |
|||
to the ``normal'' terminating characters. |
|||
|
|||
.Fn1 "char **" history_tokenize "const char *string" |
|||
Return an array of tokens parsed out of \fIstring\fP, much as the |
|||
shell might. |
|||
The tokens are split on the characters in the |
|||
\fBhistory_word_delimiters\fP variable, |
|||
and shell quoting conventions are obeyed. |
|||
|
|||
.Fn3 "char *" history_arg_extract "int first" "int last" "const char *string" |
|||
Extract a string segment consisting of the \fIfirst\fP through \fIlast\fP |
|||
arguments present in \fIstring\fP. Arguments are split using |
|||
\fBhistory_tokenize()\fP. |
|||
|
|||
.SS History Variables |
|||
|
|||
This section describes the externally-visible variables exported by |
|||
the GNU History Library. |
|||
|
|||
.Vb int history_base |
|||
The logical offset of the first entry in the history list. |
|||
|
|||
.Vb int history_length |
|||
The number of entries currently stored in the history list. |
|||
|
|||
.Vb int history_max_entries |
|||
The maximum number of history entries. This must be changed using |
|||
\fBstifle_history()\fP. |
|||
|
|||
.Vb char history_expansion_char |
|||
The character that introduces a history event. The default is \fB!\fP. |
|||
Setting this to 0 inhibits history expansion. |
|||
|
|||
.Vb char history_subst_char |
|||
The character that invokes word substitution if found at the start of |
|||
a line. The default is \fB^\fP. |
|||
|
|||
.Vb char history_comment_char |
|||
During tokenization, if this character is seen as the first character |
|||
of a word, then it and all subsequent characters up to a newline are |
|||
ignored, suppressing history expansion for the remainder of the line. |
|||
This is disabled by default. |
|||
|
|||
.Vb "char *" history_word_delimiters |
|||
The characters that separate tokens for \fBhistory_tokenize()\fP. |
|||
The default value is \fB"\ \et\en()<>;&|"\fP. |
|||
|
|||
.Vb "char *" history_no_expand_chars |
|||
The list of characters which inhibit history expansion if found immediately |
|||
following \fBhistory_expansion_char\fP. The default is space, tab, newline, |
|||
\fB\er\fP, and \fB=\fP. |
|||
|
|||
.Vb "char *" history_search_delimiter_chars |
|||
The list of additional characters which can delimit a history search |
|||
string, in addition to space, tab, \fI:\fP and \fI?\fP in the case of |
|||
a substring search. The default is empty. |
|||
|
|||
.Vb int history_quotes_inhibit_expansion |
|||
If non-zero, single-quoted words are not scanned for the history expansion |
|||
character. The default value is 0. |
|||
|
|||
.Vb "rl_linebuf_func_t *" history_inhibit_expansion_function |
|||
This should be set to the address of a function that takes two arguments: |
|||
a \fBchar *\fP (\fIstring\fP) |
|||
and an \fBint\fP index into that string (\fIi\fP). |
|||
It should return a non-zero value if the history expansion starting at |
|||
\fIstring[i]\fP should not be performed; zero if the expansion should |
|||
be done. |
|||
It is intended for use by applications like \fBbash\fP that use the history |
|||
expansion character for additional purposes. |
|||
By default, this variable is set to \fBNULL\fP. |
|||
.SH FILES |
|||
.PD 0 |
|||
.TP |
|||
.FN ~/.history |
|||
Default filename for reading and writing saved history |
|||
.PD |
|||
.SH "SEE ALSO" |
|||
.PD 0 |
|||
.TP |
|||
\fIThe Gnu Readline Library\fP, Brian Fox and Chet Ramey |
|||
.TP |
|||
\fIThe Gnu History Library\fP, Brian Fox and Chet Ramey |
|||
.TP |
|||
\fIbash\fP(1) |
|||
.TP |
|||
\fIreadline\fP(3) |
|||
.PD |
|||
.SH AUTHORS |
|||
Brian Fox, Free Software Foundation |
|||
.br |
|||
bfox@gnu.org |
|||
.PP |
|||
Chet Ramey, Case Western Reserve University |
|||
.br |
|||
chet@ins.CWRU.Edu |
|||
.SH BUG REPORTS |
|||
If you find a bug in the |
|||
.B history |
|||
library, you should report it. But first, you should |
|||
make sure that it really is a bug, and that it appears in the latest |
|||
version of the |
|||
.B history |
|||
library that you have. |
|||
.PP |
|||
Once you have determined that a bug actually exists, mail a |
|||
bug report to \fIbug\-readline\fP@\fIgnu.org\fP. |
|||
If you have a fix, you are welcome to mail that |
|||
as well! Suggestions and `philosophical' bug reports may be mailed |
|||
to \fPbug-readline\fP@\fIgnu.org\fP or posted to the Usenet |
|||
newsgroup |
|||
.BR gnu.bash.bug . |
|||
.PP |
|||
Comments and bug reports concerning |
|||
this manual page should be directed to |
|||
.IR chet@ins.CWRU.Edu . |
|||
@ -0,0 +1,800 @@ |
|||
%!PS-Adobe-3.0 |
|||
%%Creator: groff version 1.16.1 |
|||
%%CreationDate: Mon Mar 18 10:17:27 2002 |
|||
%%DocumentNeededResources: font Times-Roman |
|||
%%+ font Times-Bold |
|||
%%+ font Times-Italic |
|||
%%DocumentSuppliedResources: procset grops 1.16 1 |
|||
%%Pages: 7 |
|||
%%PageOrder: Ascend |
|||
%%Orientation: Portrait |
|||
%%EndComments |
|||
%%BeginProlog |
|||
%%BeginResource: procset grops 1.16 1 |
|||
/setpacking where{ |
|||
pop |
|||
currentpacking |
|||
true setpacking |
|||
}if |
|||
/grops 120 dict dup begin |
|||
/SC 32 def |
|||
/A/show load def |
|||
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/SF{ |
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findfont exch |
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[exch dup 0 exch 0 exch neg 0 0]makefont |
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dup setfont |
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[exch/setfont cvx]cvx bind def |
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/MF{ |
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findfont |
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[5 2 roll |
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neg 0 0]makefont |
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dup setfont |
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[exch/setfont cvx]cvx bind def |
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}bind def |
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/level0 0 def |
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/RES 0 def |
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/PL 0 def |
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/LS 0 def |
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/MANUAL{ |
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statusdict begin/manualfeed true store end |
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}bind def |
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/PLG{ |
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gsave newpath clippath pathbbox grestore |
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exch pop add exch pop |
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}bind def |
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/BP{ |
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/level0 save def |
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1 setlinecap |
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72 RES div dup scale |
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LS{ |
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90 rotate |
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}{ |
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0 PL translate |
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}ifelse |
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1 -1 scale |
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/EP{ |
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level0 restore |
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showpage |
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/DA{ |
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newpath arcn stroke |
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/SN{ |
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transform |
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.25 sub exch .25 sub exch |
|||
round .25 add exch round .25 add exch |
|||
itransform |
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}bind def |
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/DL{ |
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SN |
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moveto |
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SN |
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lineto stroke |
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}bind def |
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/DC{ |
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newpath 0 360 arc closepath |
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}bind def |
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/TM matrix def |
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/DE{ |
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TM currentmatrix pop |
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translate scale newpath 0 0 .5 0 360 arc closepath |
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TM setmatrix |
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}bind def |
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/RC/rcurveto load def |
|||
/RL/rlineto load def |
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/ST/stroke load def |
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/MT/moveto load def |
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/CL/closepath load def |
|||
/FL{ |
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currentgray exch setgray fill setgray |
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}bind def |
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/BL/fill load def |
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/LW/setlinewidth load def |
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/RE{ |
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findfont |
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dup maxlength 1 index/FontName known not{1 add}if dict begin |
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{ |
|||
1 index/FID ne{def}{pop pop}ifelse |
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}forall |
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/Encoding exch def |
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dup/FontName exch def |
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currentdict end definefont pop |
|||
}bind def |
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/DEFS 0 def |
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/EBEGIN{ |
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moveto |
|||
DEFS begin |
|||
}bind def |
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/EEND/end load def |
|||
/CNT 0 def |
|||
/level1 0 def |
|||
/PBEGIN{ |
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/level1 save def |
|||
translate |
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div 3 1 roll div exch scale |
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neg exch neg exch translate |
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0 setgray |
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0 setlinecap |
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1 setlinewidth |
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0 setlinejoin |
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10 setmiterlimit |
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[]0 setdash |
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/setstrokeadjust where{ |
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pop |
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false setstrokeadjust |
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}if |
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/setoverprint where{ |
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pop |
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false setoverprint |
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}if |
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newpath |
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/CNT countdictstack def |
|||
userdict begin |
|||
/showpage{}def |
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}bind def |
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/PEND{ |
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clear |
|||
countdictstack CNT sub{end}repeat |
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level1 restore |
|||
}bind def |
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end def |
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/setpacking where{ |
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}if |
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%%EndResource |
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%%IncludeResource: font Times-Roman |
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%%IncludeResource: font Times-Bold |
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grops begin/DEFS 1 dict def DEFS begin/u{.001 mul}bind def end/RES 72 |
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def/PL 792 def/LS false def/ENC0[/asciicircum/asciitilde/Scaron/Zcaron |
|||
/scaron/zcaron/Ydieresis/trademark/quotesingle/.notdef/.notdef/.notdef |
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/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef |
|||
/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef/.notdef |
|||
/.notdef/.notdef/space/exclam/quotedbl/numbersign/dollar/percent |
|||
/ampersand/quoteright/parenleft/parenright/asterisk/plus/comma/hyphen |
|||
/period/slash/zero/one/two/three/four/five/six/seven/eight/nine/colon |
|||
/semicolon/less/equal/greater/question/at/A/B/C/D/E/F/G/H/I/J/K/L/M/N/O |
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/P/Q/R/S/T/U/V/W/X/Y/Z/bracketleft/backslash/bracketright/circumflex |
|||
/underscore/quoteleft/a/b/c/d/e/f/g/h/i/j/k/l/m/n/o/p/q/r/s/t/u/v/w/x/y |
|||
/z/braceleft/bar/braceright/tilde/.notdef/quotesinglbase/guillemotleft |
|||
/guillemotright/bullet/florin/fraction/perthousand/dagger/daggerdbl |
|||
/endash/emdash/ff/fi/fl/ffi/ffl/dotlessi/dotlessj/grave/hungarumlaut |
|||
/dotaccent/breve/caron/ring/ogonek/quotedblleft/quotedblright/oe/lslash |
|||
/quotedblbase/OE/Lslash/.notdef/exclamdown/cent/sterling/currency/yen |
|||
/brokenbar/section/dieresis/copyright/ordfeminine/guilsinglleft |
|||
/logicalnot/minus/registered/macron/degree/plusminus/twosuperior |
|||
/threesuperior/acute/mu/paragraph/periodcentered/cedilla/onesuperior |
|||
/ordmasculine/guilsinglright/onequarter/onehalf/threequarters |
|||
/questiondown/Agrave/Aacute/Acircumflex/Atilde/Adieresis/Aring/AE |
|||
/Ccedilla/Egrave/Eacute/Ecircumflex/Edieresis/Igrave/Iacute/Icircumflex |
|||
/Idieresis/Eth/Ntilde/Ograve/Oacute/Ocircumflex/Otilde/Odieresis |
|||
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|||
/germandbls/agrave/aacute/acircumflex/atilde/adieresis/aring/ae/ccedilla |
|||
/egrave/eacute/ecircumflex/edieresis/igrave/iacute/icircumflex/idieresis |
|||
/eth/ntilde/ograve/oacute/ocircumflex/otilde/odieresis/divide/oslash |
|||
/ugrave/uacute/ucircumflex/udieresis/yacute/thorn/ydieresis]def |
|||
/Times-Italic@0 ENC0/Times-Italic RE/Times-Bold@0 ENC0/Times-Bold RE |
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/F0 10/Times-Roman@0 SF(HIST)72 48 Q(OR)-.18 E 357.18(Y\(3\) HIST)-.65 F |
|||
(OR)-.18 E(Y\(3\))-.65 E/F1 10.95/Times-Bold@0 SF -.219(NA)72 84 S(ME) |
|||
.219 E F0(history \255 GNU History Library)108 96 Q F1(COPYRIGHT)72 |
|||
112.8 Q F0(The GNU History Library is Cop)108 124.8 Q |
|||
(yright \251 1989-2002 by the Free Softw)-.1 E(are F)-.1 E |
|||
(oundation, Inc.)-.15 E F1(DESCRIPTION)72 141.6 Q F0(Man)108 153.6 Q |
|||
2.81(yp)-.15 G .31(rograms read input from the user a line at a time.) |
|||
-2.81 F .309(The GNU History library is able to k)5.309 F .309 |
|||
(eep track of)-.1 F .024(those lines, associate arbitrary data with eac\ |
|||
h line, and utilize information from pre)108 165.6 R .024 |
|||
(vious lines in composing)-.25 F(ne)108 177.6 Q 2.5(wo)-.25 G(nes.)-2.5 |
|||
E F1(HIST)72 199.2 Q(OR)-.197 E 2.738(YE)-.383 G(XP)-2.738 E(ANSION)-.81 |
|||
E F0 .823(The history library supports a history e)108 211.2 R .822 |
|||
(xpansion feature that is identical to the history e)-.15 F .822 |
|||
(xpansion in)-.15 F/F2 10/Times-Bold@0 SF(bash.)3.322 E F0 |
|||
(This section describes what syntax features are a)108 223.2 Q -.25(va) |
|||
-.2 G(ilable.).25 E 1.305(History e)108 240 R 1.305 |
|||
(xpansions introduce w)-.15 F 1.306(ords from the history list into the\ |
|||
input stream, making it easy to repeat)-.1 F .21 |
|||
(commands, insert the ar)108 252 R .21(guments to a pre)-.18 F .209 |
|||
(vious command into the current input line, or \214x errors in pre)-.25 |
|||
F(vious)-.25 E(commands quickly)108 264 Q(.)-.65 E 1.296(History e)108 |
|||
280.8 R 1.297(xpansion is usually performed immediately after a complet\ |
|||
e line is read.)-.15 F 1.297(It tak)6.297 F 1.297(es place in tw)-.1 F |
|||
(o)-.1 E 2.855(parts. The)108 292.8 R .354(\214rst is to determine whic\ |
|||
h line from the history list to use during substitution.)2.855 F .354 |
|||
(The second is to)5.354 F .116 |
|||
(select portions of that line for inclusion into the current one.)108 |
|||
304.8 R .117(The line selected from the history is the)5.116 F/F3 10 |
|||
/Times-Italic@0 SF -.15(ev)2.617 G(ent).15 E F0(,)A .846 |
|||
(and the portions of that line that are acted upon are)108 316.8 R F3 |
|||
(wor)3.346 E(ds)-.37 E F0 5.846(.V)C(arious)-6.956 E F3(modi\214er)3.346 |
|||
E(s)-.1 E F0 .846(are a)3.346 F -.25(va)-.2 G .845(ilable to manipulate) |
|||
.25 F .304(the selected w)108 328.8 R 2.804(ords. The)-.1 F .304 |
|||
(line is brok)2.804 F .304(en into w)-.1 F .304(ords in the same f)-.1 F |
|||
.304(ashion as)-.1 F F2(bash)2.804 E F0 .305 |
|||
(does when reading input, so)2.804 F .539(that se)108 340.8 R -.15(ve) |
|||
-.25 G .539(ral w).15 F .539(ords that w)-.1 F .539 |
|||
(ould otherwise be separated are considered one w)-.1 F .538 |
|||
(ord when surrounded by quotes)-.1 F .307(\(see the description of)108 |
|||
352.8 R F2(history_tok)2.807 E(enize\(\))-.1 E F0(belo)2.807 E 2.807 |
|||
(w\). History)-.25 F -.15(ex)2.807 G .307 |
|||
(pansions are introduced by the appearance of).15 F .52(the history e) |
|||
108 364.8 R .52(xpansion character)-.15 F 3.02(,w)-.4 G .52(hich is) |
|||
-3.02 F F2(!)3.853 E F0 .52(by def)3.853 F 3.02(ault. Only)-.1 F .52 |
|||
(backslash \()3.02 F F2(\\).833 E F0 3.02(\)a).833 G .52 |
|||
(nd single quotes can quote the)-3.02 F(history e)108 376.8 Q |
|||
(xpansion character)-.15 E(.)-.55 E F2(Ev)87 393.6 Q(ent Designators)-.1 |
|||
E F0(An e)108 405.6 Q -.15(ve)-.25 G(nt designator is a reference to a \ |
|||
command line entry in the history list.).15 E F2(!)108 422.4 Q F0 |
|||
(Start a history substitution, e)32.67 E(xcept when follo)-.15 E |
|||
(wed by a)-.25 E F2(blank)2.5 E F0 2.5(,n)C -.25(ew)-2.5 G |
|||
(line, = or \(.).25 E F2(!)108 434.4 Q F3(n)A F0(Refer to command line) |
|||
27.67 E F3(n)2.5 E F0(.).24 E F2<21ad>108 446.4 Q F3(n)A F0 |
|||
(Refer to the current command line minus)21.97 E F3(n)2.5 E F0(.).24 E |
|||
F2(!!)108 458.4 Q F0(Refer to the pre)29.34 E(vious command.)-.25 E |
|||
(This is a synon)5 E(ym for `!\2551'.)-.15 E F2(!)108 470.4 Q F3(string) |
|||
A F0(Refer to the most recent command starting with)9.33 E F3(string)2.5 |
|||
E F0(.).22 E F2(!?)108 482.4 Q F3(string)A F2([?])A F0 1.057 |
|||
(Refer to the most recent command containing)144 494.4 R F3(string)3.557 |
|||
E F0 6.057(.T).22 G 1.057(he trailing)-6.057 F F2(?)3.557 E F0 1.057 |
|||
(may be omitted if)3.557 F F3(string)3.557 E F0(is)3.557 E(follo)144 |
|||
506.4 Q(wed immediately by a ne)-.25 E(wline.)-.25 E/F4 12/Times-Bold@0 |
|||
SF(^)108 523.4 Q F3(string1)-5 I F4(^)5 I F3(string2)-5 I F4(^)5 I F0 |
|||
2.66(Quick substitution.)144 530.4 R 2.66 |
|||
(Repeat the last command, replacing)7.66 F F3(string1)5.16 E F0(with) |
|||
5.16 E F3(string2)5.16 E F0 7.66(.E).02 G(qui)-7.66 E -.25(va)-.25 G |
|||
2.66(lent to).25 F -.74(``)144 542.4 S(!!:s/).74 E F3(string1)A F0(/)A |
|||
F3(string2)A F0(/')A 2.5('\()-.74 G(see)-2.5 E F2(Modi\214ers)2.5 E F0 |
|||
(belo)2.5 E(w\).)-.25 E F2(!#)108 554.4 Q F0 |
|||
(The entire command line typed so f)27.67 E(ar)-.1 E(.)-.55 E F2 -.75 |
|||
(Wo)87 571.2 S(rd Designators).75 E F0 -.8(Wo)108 583.2 S 1.313 |
|||
(rd designators are used to select desired w).8 F 1.314(ords from the e) |
|||
-.1 F -.15(ve)-.25 G 3.814(nt. A).15 F F2(:)3.814 E F0 1.314 |
|||
(separates the e)3.814 F -.15(ve)-.25 G 1.314(nt speci\214cation).15 F |
|||
.53(from the w)108 595.2 R .529(ord designator)-.1 F 5.529(.I)-.55 G |
|||
3.029(tm)-5.529 G .529(ay be omitted if the w)-3.029 F .529 |
|||
(ord designator be)-.1 F .529(gins with a)-.15 F F2(^)3.029 E F0(,)A F2 |
|||
($)3.029 E F0(,)A F2(*)3.029 E F0(,)A F2<ad>3.029 E F0 3.029(,o)C(r) |
|||
-3.029 E F2(%)3.029 E F0 5.529(.W)C(ords)-6.329 E 1.3 |
|||
(are numbered from the be)108 607.2 R 1.3 |
|||
(ginning of the line, with the \214rst w)-.15 F 1.301 |
|||
(ord being denoted by 0 \(zero\).)-.1 F -.8(Wo)6.301 G 1.301(rds are).8 |
|||
F(inserted into the current line separated by single spaces.)108 619.2 Q |
|||
F2 2.5(0\()108 636 S(zer)-2.5 E(o\))-.18 E F0(The zeroth w)144 648 Q 2.5 |
|||
(ord. F)-.1 F(or the shell, this is the command w)-.15 E(ord.)-.1 E F3 |
|||
(n)108 660 Q F0(The)31 E F3(n)2.5 E F0(th w)A(ord.)-.1 E F2(^)108 672 Q |
|||
F0(The \214rst ar)32.67 E 2.5(gument. That)-.18 F(is, w)2.5 E(ord 1.)-.1 |
|||
E F2($)108 684 Q F0(The last ar)31 E(gument.)-.18 E F2(%)108 696 Q F0 |
|||
(The w)26 E(ord matched by the most recent `?)-.1 E F3(string)A F0 |
|||
(?' search.)A F3(x)108 708 Q F2<ad>A F3(y)A F0 2.5(Ar)21.42 G(ange of w) |
|||
-2.5 E(ords; `\255)-.1 E F3(y)A F0 2.5('a)C(bbre)-2.5 E(viates `0\255) |
|||
-.25 E F3(y)A F0('.)A(GNU History 4.3)72 768 Q(2002 January 31)131.79 E |
|||
(1)195.95 E EP |
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/F0 10/Times-Roman@0 SF(HIST)72 48 Q(OR)-.18 E 357.18(Y\(3\) HIST)-.65 F |
|||
(OR)-.18 E(Y\(3\))-.65 E/F1 10/Times-Bold@0 SF(*)108 84 Q F0 .316 |
|||
(All of the w)31 F .316(ords b)-.1 F .316(ut the zeroth.)-.2 F .315 |
|||
(This is a synon)5.315 F .315(ym for `)-.15 F/F2 10/Times-Italic@0 SF |
|||
(1\255$)A F0 2.815('. It)B .315(is not an error to use)2.815 F F1(*) |
|||
2.815 E F0 .315(if there is)2.815 F(just one w)144 96 Q(ord in the e)-.1 |
|||
E -.15(ve)-.25 G(nt; the empty string is returned in that case.).15 E F1 |
|||
(x*)108 108 Q F0(Abbre)26 E(viates)-.25 E F2(x\255$)2.5 E F0(.)A F1 |
|||
<78ad>108 120 Q F0(Abbre)25.3 E(viates)-.25 E F2(x\255$)2.5 E F0(lik)2.5 |
|||
E(e)-.1 E F1(x*)2.5 E F0 2.5(,b)C(ut omits the last w)-2.7 E(ord.)-.1 E |
|||
(If a w)108 136.8 Q(ord designator is supplied without an e)-.1 E -.15 |
|||
(ve)-.25 G(nt speci\214cation, the pre).15 E |
|||
(vious command is used as the e)-.25 E -.15(ve)-.25 G(nt.).15 E F1 |
|||
(Modi\214ers)87 153.6 Q F0 .183(After the optional w)108 165.6 R .183 |
|||
(ord designator)-.1 F 2.683(,t)-.4 G .184 |
|||
(here may appear a sequence of one or more of the follo)-2.683 F .184 |
|||
(wing modi\214ers,)-.25 F(each preceded by a `:'.)108 177.6 Q F1(h)108 |
|||
194.4 Q F0(Remo)30.44 E .3 -.15(ve a t)-.15 H |
|||
(railing \214le name component, lea).15 E(ving only the head.)-.2 E F1 |
|||
(t)108 206.4 Q F0(Remo)32.67 E .3 -.15(ve a)-.15 H |
|||
(ll leading \214le name components, lea).15 E(ving the tail.)-.2 E F1(r) |
|||
108 218.4 Q F0(Remo)31.56 E .3 -.15(ve a t)-.15 H(railing suf).15 E |
|||
(\214x of the form)-.25 E F2(.xxx)2.5 E F0 2.5(,l)C(ea)-2.5 E |
|||
(ving the basename.)-.2 E F1(e)108 230.4 Q F0(Remo)31.56 E .3 -.15(ve a) |
|||
-.15 H(ll b).15 E(ut the trailing suf)-.2 E(\214x.)-.25 E F1(p)108 242.4 |
|||
Q F0(Print the ne)30.44 E 2.5(wc)-.25 G(ommand b)-2.5 E(ut do not e)-.2 |
|||
E -.15(xe)-.15 G(cute it.).15 E F1(q)108 254.4 Q F0 |
|||
(Quote the substituted w)30.44 E(ords, escaping further substitutions.) |
|||
-.1 E F1(x)108 266.4 Q F0(Quote the substituted w)31 E(ords as with)-.1 |
|||
E F1(q)2.5 E F0 2.5(,b)C(ut break into w)-2.7 E(ords at)-.1 E F1(blanks) |
|||
2.5 E F0(and ne)2.5 E(wlines.)-.25 E F1(s/)108 278.4 Q F2(old)A F1(/)A |
|||
F2(ne)A(w)-.15 E F1(/)A F0(Substitute)144 290.4 Q F2(ne)2.814 E(w)-.15 E |
|||
F0 .314(for the \214rst occurrence of)2.814 F F2(old)2.814 E F0 .314 |
|||
(in the e)2.814 F -.15(ve)-.25 G .314(nt line.).15 F(An)5.314 E 2.814 |
|||
(yd)-.15 G .314(elimiter can be used in place)-2.814 F .616(of /.)144 |
|||
302.4 R .617 |
|||
(The \214nal delimiter is optional if it is the last character of the e) |
|||
5.616 F -.15(ve)-.25 G .617(nt line.).15 F .617(The delimiter may)5.617 |
|||
F .75(be quoted in)144 314.4 R F2(old)3.25 E F0(and)3.25 E F2(ne)3.25 E |
|||
(w)-.15 E F0 .75(with a single backslash.)3.25 F .749(If & appears in) |
|||
5.75 F F2(ne)3.249 E(w)-.15 E F0 3.249(,i).31 G 3.249(ti)-3.249 G 3.249 |
|||
(sr)-3.249 G .749(eplaced by)-3.249 F F2(old)3.249 E F0 5.749(.A).77 G |
|||
.369(single backslash will quote the &.)144 326.4 R(If)5.369 E F2(old) |
|||
2.869 E F0 .37(is null, it is set to the last)2.869 F F2(old)2.87 E F0 |
|||
.37(substituted, or)2.87 F 2.87(,i)-.4 G 2.87(fn)-2.87 G 2.87(op)-2.87 G |
|||
(re)-2.87 E(vi-)-.25 E(ous history substitutions took place, the last) |
|||
144 338.4 Q F2(string)2.5 E F0(in a)2.5 E F1(!?)2.5 E F2(string)A F1 |
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([?])A F0(search.)5 E F1(&)108 350.4 Q F0(Repeat the pre)27.67 E |
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(vious substitution.)-.25 E F1(g)108 362.4 Q F0 .398 |
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(Cause changes to be applied o)31 F -.15(ve)-.15 G 2.898(rt).15 G .398 |
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(he entire e)-2.898 F -.15(ve)-.25 G .398(nt line.).15 F .397 |
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(This is used in conjunction with `)5.398 F F1(:s)A F0 2.897('\()C |
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(e.g.,)-2.897 E(`)144 374.4 Q F1(:gs/)A F2(old)A F1(/)A F2(ne)A(w)-.15 E |
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F1(/)A F0 1.218('\) or `)B F1(:&)A F0 3.718('. If)B 1.218(used with `) |
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3.718 F F1(:s)A F0 1.218(', an)B 3.718(yd)-.15 G 1.219 |
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(elimiter can be used in place of /, and the \214nal)-3.718 F |
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(delimiter is optional if it is the last character of the e)144 386.4 Q |
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-.15(ve)-.25 G(nt line.).15 E/F3 10.95/Times-Bold@0 SF(PR)72 403.2 Q |
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(OGRAMMING WITH HIST)-.329 E(OR)-.197 E 2.738(YF)-.383 G(UNCTIONS)-2.738 |
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E F0(This section describes ho)108 415.2 Q 2.5(wt)-.25 G 2.5(ou)-2.5 G |
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(se the History library in other programs.)-2.5 E F1(Intr)87 432 Q |
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(oduction to History)-.18 E F0 .797 |
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(The programmer using the History library has a)108 444 R -.25(va)-.2 G |
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.796(ilable functions for remembering lines on a history list,).25 F |
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.307(associating arbitrary data with a line, remo)108 456 R .308 |
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(ving lines from the list, searching through the list for a line con-) |
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-.15 F .303(taining an arbitrary te)108 468 R .303 |
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(xt string, and referencing an)-.15 F 2.803(yl)-.15 G .303 |
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(ine in the list directly)-2.803 F 5.303(.I)-.65 G 2.803(na)-5.303 G |
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.303(ddition, a history)-2.803 F F2 -.2(ex)2.802 G(pansion).2 E F0 |
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(function is a)108 480 Q -.25(va)-.2 G(ilable which pro).25 E |
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(vides for a consistent user interf)-.15 E(ace across dif)-.1 E |
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(ferent programs.)-.25 E .059(The user using programs written with the \ |
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History library has the bene\214t of a consistent user interf)108 496.8 |
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R .059(ace with a)-.1 F .918(set of well-kno)108 508.8 R .917 |
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(wn commands for manipulating the te)-.25 F .917(xt of pre)-.15 F .917 |
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(vious lines and using that te)-.25 F .917(xt in ne)-.15 F 3.417(wc)-.25 |
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G(om-)-3.417 E 4.183(mands. The)108 520.8 R 1.684(basic history manipul\ |
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ation commands are identical to the history substitution pro)4.183 F |
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1.684(vided by)-.15 F F1(bash)108 532.8 Q F0(.)A .904 |
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(If the programmer desires, he can use the Readline library)108 549.6 R |
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3.403(,w)-.65 G .903(hich includes some history manipulation by)-3.403 F |
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(def)108 561.6 Q(ault, and has the added adv)-.1 E |
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(antage of command line editing.)-.25 E .39(Before declaring an)108 |
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578.4 R 2.89(yf)-.15 G .39(unctions using an)-2.89 F 2.89(yf)-.15 G .39 |
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(unctionality the History library pro)-2.89 F .39 |
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(vides in other code, an appli-)-.15 F .067 |
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(cation writer should include the \214le)108 590.4 R F2(<r)4.233 E |
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(eadline/history)-.37 E(.h>)-.55 E F0 .067(in an)4.233 F 2.566<798c>-.15 |
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G .066(le that uses the History library')-2.566 F 2.566(sf)-.55 G |
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(eatures.)-2.566 E .538(It supplies e)108 602.4 R .538 |
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(xtern declarations for all of the library')-.15 F 3.038(sp)-.55 G .538 |
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(ublic functions and v)-3.038 F .539(ariables, and declares all of the) |
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-.25 F(public data structures.)108 614.4 Q F1(History Storage)87 643.2 Q |
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F0(The history list is an array of history entries.)108 655.2 Q 2.5(Ah)5 |
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G(istory entry is declared as follo)-2.5 E(ws:)-.25 E F2(typedef void *) |
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108 672 Q F1(histdata_t;)2.5 E F0(typedef struct _hist_entry {)108 688.8 |
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Q(char *line;)113 700.8 Q(histdata_t data;)113 712.8 Q 2.5(}H)108 724.8 |
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S(IST_ENTR)-2.5 E -.92(Y;)-.65 G(GNU History 4.3)72 768 Q |
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(2002 January 31)131.79 E(2)195.95 E EP |
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/F0 10/Times-Roman@0 SF(HIST)72 48 Q(OR)-.18 E 357.18(Y\(3\) HIST)-.65 F |
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(OR)-.18 E(Y\(3\))-.65 E |
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(The history list itself might therefore be declared as)108 84 Q/F1 10 |
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/Times-Italic@0 SF(HIST_ENTR)108 100.8 Q 2.5(Y*)-.18 G(*)-2.5 E/F2 10 |
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/Times-Bold@0 SF(the_history_list;)2.5 E F0(The state of the History li\ |
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brary is encapsulated into a single structure:)108 117.6 Q(/*)108 134.4 |
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Q 2.5(*As)110.5 146.4 S |
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(tructure used to pass around the current state of the history)-2.5 E(.) |
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-.65 E(*/)110.5 158.4 Q(typedef struct _hist_state {)108 170.4 Q |
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(HIST_ENTR)113 182.4 Q 2.5(Y*)-.65 G |
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(*entries; /* Pointer to the entries themselv)-2.5 E(es. */)-.15 E |
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(int of)113 194.4 Q 25(fset; /*)-.25 F |
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(The location pointer within this array)2.5 E 2.5(.*)-.65 G(/)-2.5 E |
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(int length;)113 206.4 Q(/* Number of elements within this array)27.5 E |
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2.5(.*)-.65 G(/)-2.5 E(int size;)113 218.4 Q |
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(/* Number of slots allocated to this array)32.5 E 2.5(.*)-.65 G(/)-2.5 |
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E(int \215ags;)113 230.4 Q 2.5(}H)108 242.4 S(IST)-2.5 E(OR)-.18 E(Y_ST) |
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-.65 E -1.11(AT)-.93 G(E;)1.11 E(If the \215ags member includes)108 |
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259.2 Q F2(HS_STIFLED)2.5 E F0 2.5(,t)C(he history has been sti\215ed.) |
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-2.5 E/F3 10.95/Times-Bold@0 SF(History Functions)72 276 Q F0 |
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(This section describes the calling sequence for the v)108 288 Q |
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(arious functions e)-.25 E(xported by the GNU History library)-.15 E(.) |
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-.65 E F2(Initializing History and State Management)87 304.8 Q F0 1.274 |
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(This section describes functions used to initialize and manage the sta\ |
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te of the History library when you)108 316.8 R -.1(wa)108 328.8 S |
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(nt to use the history functions in your program.).1 E F1(void)108 352.8 |
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Q F2(using_history)2.5 E F0(\()4.166 E F1(void)A F0(\))1.666 E(Be)108 |
|||
364.8 Q(gin a session in which the history functions might be used.)-.15 |
|||
E(This initializes the interacti)5 E .3 -.15(ve v)-.25 H(ariables.)-.1 E |
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F1(HIST)108 388.8 Q(OR)-.18 E(Y_ST)-.18 E -.37(AT)-.5 G 2.5(E*).37 G F2 |
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(history_get_history_state)A F0(\()4.166 E F1(void)A F0(\))1.666 E |
|||
(Return a structure describing the current state of the input history) |
|||
108 400.8 Q(.)-.65 E F1(void)108 424.8 Q F2(history_set_history_state) |
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2.5 E F0(\()4.166 E F1(HIST)A(OR)-.18 E(Y_ST)-.18 E -.37(AT)-.5 G 2.5 |
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(E*).37 G(state)-2.5 E F0(\))1.666 E |
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(Set the state of the history list according to)108 436.8 Q F1(state)2.5 |
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E F0(.)A F2(History List Management)87 465.6 Q F0 |
|||
(These functions manage indi)108 477.6 Q(vidual entries on the history \ |
|||
list, or set parameters managing the list itself.)-.25 E F1(void)108 |
|||
501.6 Q F2(add_history)2.5 E F0(\()4.166 E F1(const c)A(har *string)-.15 |
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E F0(\))1.666 E(Place)108 513.6 Q F1(string)2.5 E F0 |
|||
(at the end of the history list.)2.5 E |
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(The associated data \214eld \(if an)5 E(y\) is set to)-.15 E F2(NULL) |
|||
2.5 E F0(.)A F1(HIST_ENTR)108 537.6 Q 2.5(Y*)-.18 G F2 -.18(re)C(mo).18 |
|||
E -.1(ve)-.1 G(_history).1 E F0(\()4.166 E F1(int whic)A(h)-.15 E F0(\)) |
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1.666 E(Remo)108 549.6 Q .352 -.15(ve h)-.15 H .052(istory entry at of) |
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.15 F(fset)-.25 E F1(whic)2.553 E(h)-.15 E F0 .053(from the history) |
|||
2.553 F 5.053(.T)-.65 G .053(he remo)-5.053 F -.15(ve)-.15 G 2.553(de) |
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.15 G .053(lement is returned so you can free the)-2.553 F |
|||
(line, data, and containing structure.)108 561.6 Q F1(HIST_ENTR)108 |
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585.6 Q 2.5(Y*)-.18 G F2 -.18(re)C(place_history_entry).18 E F0(\()4.166 |
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E F1(int whic)A -.834(h, const)-.15 F -.15(ch)2.5 G(ar *line).15 E 1.666 |
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(,h)-.1 G(istdata_t data)-1.666 E F0(\))3.332 E(Mak)108 597.6 Q 2.868 |
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(et)-.1 G .368(he history entry at of)-2.868 F(fset)-.25 E F1(whic)2.868 |
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E(h)-.15 E F0(ha)2.868 E -.15(ve)-.2 G F1(line)3.018 E F0(and)2.868 E F1 |
|||
(data)2.868 E F0 5.367(.T)C .367 |
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(his returns the old entry so you can dispose of)-5.367 F(the data.)108 |
|||
609.6 Q(In the case of an in)5 E -.25(va)-.4 G(lid).25 E F1(whic)2.5 E |
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(h)-.15 E F0 2.5(,a)C F2(NULL)A F0(pointer is returned.)2.5 E F1(void) |
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108 633.6 Q F2(clear_history)2.5 E F0(\()4.166 E F1(void)A F0(\))1.666 E |
|||
(Clear the history list by deleting all the entries.)108 645.6 Q F1 |
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(void)108 669.6 Q F2(sti\215e_history)2.5 E F0(\()4.166 E F1(int max)A |
|||
F0(\))1.666 E(Sti\215e the history list, remembering only the last)108 |
|||
681.6 Q F1(max)2.5 E F0(entries.)2.5 E F1(int)108 705.6 Q F2 |
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(unsti\215e_history)2.5 E F0(\()4.166 E F1(void)A F0(\))1.666 E .46 |
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(Stop sti\215ing the history)108 717.6 R 5.46(.T)-.65 G .46 |
|||
(his returns the pre)-5.46 F .46 |
|||
(viously-set maximum number of history entries \(as set by)-.25 F F2 |
|||
(sti-)2.96 E(\215e_history\(\))108 729.6 Q F0 2.5(\). history)B -.1(wa) |
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2.5 G 2.5(ss).1 G 2.5(ti\215ed. The)-2.5 F -.25(va)2.5 G(lue is positi) |
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.25 E .3 -.15(ve i)-.25 H 2.5(ft).15 G(he history w)-2.5 E |
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(as sti\215ed, ne)-.1 E -.05(ga)-.15 G(ti).05 E .3 -.15(ve i)-.25 H 2.5 |
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(fi).15 G 2.5(tw)-2.5 G(asn')-2.6 E(t.)-.18 E(GNU History 4.3)72 768 Q |
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(OR)-.18 E(Y\(3\))-.65 E/F1 10/Times-Italic@0 SF(int)108 84 Q/F2 10 |
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/Times-Bold@0 SF(history_is_sti\215ed)2.5 E F0(\()4.166 E F1(void)A F0 |
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(\))1.666 E |
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(Returns non-zero if the history is sti\215ed, zero if it is not.)108 96 |
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Q F2(Inf)87 124.8 Q(ormation About the History List)-.25 E F0(These fun\ |
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ctions return information about the entire history list or indi)108 |
|||
136.8 Q(vidual list entries.)-.25 E F1(HIST_ENTR)108 160.8 Q 2.5(Y*)-.18 |
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G(*)-2.5 E F2(history_list)2.5 E F0(\()4.166 E F1(void)A F0(\))1.666 E |
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.708(Return a)108 172.8 R F2(NULL)3.208 E F0 .708(terminated array of) |
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3.208 F F1(HIST_ENTR)3.208 E 3.208(Y*)-.18 G F0 .708 |
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(which is the current input history)B 5.707(.E)-.65 G .707 |
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(lement 0 of this)-5.707 F(list is the be)108 184.8 Q(ginning of time.) |
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-.15 E(If there is no history)5 E 2.5(,r)-.65 G(eturn)-2.5 E F2(NULL)2.5 |
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E F0(.)A F1(int)108 208.8 Q F2(wher)2.5 E(e_history)-.18 E F0(\()4.166 E |
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F1(void)A F0(\))1.666 E(Returns the of)108 220.8 Q |
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(fset of the current history element.)-.25 E F1(HIST_ENTR)108 244.8 Q |
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2.5(Y*)-.18 G F2(curr)A(ent_history)-.18 E F0(\()4.166 E F1(void)A F0 |
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(\))1.666 E 1.373 |
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(Return the history entry at the current position, as determined by)108 |
|||
256.8 R F2(wher)3.873 E(e_history\(\))-.18 E F0 6.373(.I)C 3.873(ft) |
|||
-6.373 G 1.374(here is no entry)-3.873 F(there, return a)108 268.8 Q F2 |
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(NULL)2.5 E F0(pointer)2.5 E(.)-.55 E F1(HIST_ENTR)108 292.8 Q 2.5(Y*) |
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-.18 G F2(history_get)A F0(\()4.166 E F1(int of)A(fset)-.18 E F0(\)) |
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1.666 E .288(Return the history entry at position)108 304.8 R F1(of) |
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2.787 E(fset)-.18 E F0 2.787(,s)C .287(tarting from)-2.787 F F2 |
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(history_base)2.787 E F0 5.287(.I)C 2.787(ft)-5.287 G .287 |
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(here is no entry there, or if)-2.787 F F1(of)2.787 E(fset)-.18 E F0 |
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(is greater than the history length, return a)108 316.8 Q F2(NULL)2.5 E |
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F0(pointer)2.5 E(.)-.55 E F1(int)108 340.8 Q F2(history_total_bytes)2.5 |
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E F0(\()4.166 E F1(void)A F0(\))1.666 E .391 |
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(Return the number of bytes that the primary history entries are using.) |
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108 352.8 R .392(This function returns the sum of the)5.392 F |
|||
(lengths of all the lines in the history)108 364.8 Q(.)-.65 E F2(Mo)87 |
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393.6 Q(ving Ar)-.1 E(ound the History List)-.18 E F0 |
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(These functions allo)108 405.6 Q 2.5(wt)-.25 G(he current inde)-2.5 E |
|||
2.5(xi)-.15 G(nto the history list to be set or changed.)-2.5 E F1(int) |
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108 429.6 Q F2(history_set_pos)2.5 E F0(\()4.166 E F1(int pos)A F0(\)) |
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1.666 E .79(Set the current history of)108 441.6 R .79(fset to)-.25 F F1 |
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(pos)3.29 E F0 3.29(,a)C 3.29(na)-3.29 G .79(bsolute inde)-3.29 F 3.29 |
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(xi)-.15 G .79(nto the list.)-3.29 F .79(Returns 1 on success, 0 if)5.79 |
|||
F F1(pos)3.29 E F0 .79(is less)3.29 F |
|||
(than zero or greater than the number of history entries.)108 453.6 Q F1 |
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(HIST_ENTR)108 477.6 Q 2.5(Y*)-.18 G F2(pr)A -.15(ev)-.18 G |
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(ious_history).15 E F0(\()4.166 E F1(void)A F0(\))1.666 E .207 |
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(Back up the current history of)108 489.6 R .207(fset to the pre)-.25 F |
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.207(vious history entry)-.25 F 2.708(,a)-.65 G .208 |
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(nd return a pointer to that entry)-2.708 F 5.208(.I)-.65 G 2.708(ft) |
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-5.208 G .208(here is)-2.708 F(no pre)108 501.6 Q(vious entry)-.25 E 2.5 |
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(,r)-.65 G(eturn a)-2.5 E F2(NULL)2.5 E F0(pointer)2.5 E(.)-.55 E F1 |
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(HIST_ENTR)108 525.6 Q 2.5(Y*)-.18 G F2(next_history)A F0(\()4.166 E F1 |
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(void)A F0(\))1.666 E(Mo)108 537.6 Q 1.047 -.15(ve t)-.15 H .747 |
|||
(he current history of).15 F .747(fset forw)-.25 F .746(ard to the ne) |
|||
-.1 F .746(xt history entry)-.15 F 3.246(,a)-.65 G .746 |
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(nd return the a pointer to that entry)-3.246 F 5.746(.I)-.65 G(f)-5.746 |
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E(there is no ne)108 549.6 Q(xt entry)-.15 E 2.5(,r)-.65 G(eturn a)-2.5 |
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E F2(NULL)2.5 E F0(pointer)2.5 E(.)-.55 E F2(Sear)87 578.4 Q |
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(ching the History List)-.18 E F0 .005(These functions allo)108 590.4 R |
|||
2.505(ws)-.25 G .006(earching of the history list for entries containin\ |
|||
g a speci\214c string.)-2.505 F .006(Searching may be)5.006 F 1.452 |
|||
(performed both forw)108 602.4 R 1.452(ard and backw)-.1 F 1.451 |
|||
(ard from the current history position.)-.1 F 1.451(The search may be) |
|||
6.451 F F1(anc)3.951 E(hor)-.15 E(ed)-.37 E F0(,)A |
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(meaning that the string must match at the be)108 614.4 Q |
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(ginning of the history entry)-.15 E(.)-.65 E F1(int)108 638.4 Q F2 |
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(history_sear)2.5 E(ch)-.18 E F0(\()4.166 E F1(const c)A(har *string) |
|||
-.15 E 1.666(,i)-.1 G(nt dir)-1.666 E(ection)-.37 E F0(\))1.666 E .155 |
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(Search the history for)108 650.4 R F1(string)2.655 E F0 2.656(,s)C .156 |
|||
(tarting at the current history of)-2.656 F 2.656(fset. If)-.25 F F1 |
|||
(dir)2.656 E(ection)-.37 E F0 .156(is less than 0, then the search)2.656 |
|||
F .802(is through pre)108 662.4 R .802 |
|||
(vious entries, otherwise through subsequent entries.)-.25 F(If)5.801 E |
|||
F1(string)3.301 E F0 .801(is found, then the current his-)3.301 F .064 |
|||
(tory inde)108 674.4 R 2.564(xi)-.15 G 2.564(ss)-2.564 G .064 |
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(et to that history entry)-2.564 F 2.564(,a)-.65 G .064(nd the v)-2.564 |
|||
F .064(alue returned is the of)-.25 F .064 |
|||
(fset in the line of the entry where)-.25 F F1(string)2.565 E F0 -.1(wa) |
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108 686.4 S 2.5(sf).1 G 2.5(ound. Otherwise,)-2.5 F |
|||
(nothing is changed, and a -1 is returned.)2.5 E F1(int)108 710.4 Q F2 |
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(history_sear)2.5 E(ch_pr)-.18 E(e\214x)-.18 E F0(\()4.166 E F1(const c) |
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A(har *string)-.15 E 1.666(,i)-.1 G(nt dir)-1.666 E(ection)-.37 E F0(\)) |
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1.666 E .684(Search the history for)108 722.4 R F1(string)3.183 E F0 |
|||
3.183(,s)C .683(tarting at the current history of)-3.183 F 3.183 |
|||
(fset. The)-.25 F .683(search is anchored: matching lines)3.183 F |
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96 R(If)6.115 E F1(string)3.615 E F0 1.115 |
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(is found, then the current history inde)3.615 F 3.614(xi)-.15 G 3.614 |
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(ss)-3.614 G 1.114(et to that entry)-3.614 F 3.614(,a)-.65 G 1.114 |
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(nd the)-3.614 F(return v)108 108 Q(alue is 0.)-.25 E |
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(Otherwise, nothing is changed, and a -1 is returned.)5 E F1(int)108 132 |
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Q/F2 10/Times-Bold@0 SF(history_sear)2.5 E(ch_pos)-.18 E F0(\()4.166 E |
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F1(const c)A(har *string)-.15 E 1.666(,i)-.1 G(nt dir)-1.666 E -.834 |
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(ection, int)-.37 F(pos)2.5 E F0(\))3.332 E .603(Search for)108 144 R F1 |
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(string)3.103 E F0 .603(in the history list, starting at)3.103 F F1(pos) |
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3.104 E F0 3.104(,a)C 3.104(na)-3.104 G .604(bsolute inde)-3.104 F 3.104 |
|||
(xi)-.15 G .604(nto the list.)-3.104 F(If)5.604 E F1(dir)3.104 E(ection) |
|||
-.37 E F0 .604(is ne)3.104 F -.05(ga)-.15 G(ti).05 E -.15(ve)-.25 G(,) |
|||
.15 E .608(the search proceeds backw)108 156 R .608(ard from)-.1 F F1 |
|||
(pos)3.108 E F0 3.108(,o)C .608(therwise forw)-3.108 F 3.108 |
|||
(ard. Returns)-.1 F .608(the absolute inde)3.108 F 3.108(xo)-.15 G 3.108 |
|||
(ft)-3.108 G .608(he history ele-)-3.108 F(ment where)108 168 Q F1 |
|||
(string)2.5 E F0 -.1(wa)2.5 G 2.5(sf).1 G(ound, or -1 otherwise.)-2.5 E |
|||
F2(Managing the History File)87 196.8 Q F0 .035(The History library can\ |
|||
read the history from and write it to a \214le.)108 208.8 R .036 |
|||
(This section documents the functions for)5.035 F |
|||
(managing a history \214le.)108 220.8 Q F1(int)108 244.8 Q F2 -.18(re) |
|||
2.5 G(ad_history).18 E F0(\()4.166 E F1(const c)A(har *\214lename)-.15 E |
|||
F0(\))1.666 E .151(Add the contents of)108 256.8 R F1(\214lename)2.651 E |
|||
F0 .151(to the history list, a line at a time.)2.651 F(If)5.15 E F1 |
|||
(\214lename)2.65 E F0(is)2.65 E F2(NULL)2.65 E F0 2.65(,t)C .15 |
|||
(hen read from)-2.65 F F1(~/.his-)2.65 E(tory)108 268.8 Q F0 5(.R)C |
|||
(eturns 0 if successful, or)-5 E F2(err)2.5 E(no)-.15 E F0(if not.)2.5 E |
|||
F1(int)108 292.8 Q F2 -.18(re)2.5 G(ad_history_range).18 E F0(\()4.166 E |
|||
F1(const c)A(har *\214lename)-.15 E 1.666(,i)-.1 G(nt fr)-1.666 E -.834 |
|||
(om, int)-.45 F(to)2.5 E F0(\))3.332 E .052(Read a range of lines from) |
|||
108 304.8 R F1(\214lename)2.553 E F0 2.553(,a)C .053 |
|||
(dding them to the history list.)-2.553 F .053(Start reading at line) |
|||
5.053 F F1(fr)2.553 E(om)-.45 E F0 .053(and end at)2.553 F F1(to)2.553 E |
|||
F0(.)A(If)108 316.8 Q F1(fr)2.889 E(om)-.45 E F0 .389 |
|||
(is zero, start at the be)2.889 F 2.889(ginning. If)-.15 F F1(to)2.889 E |
|||
F0 .389(is less than)2.889 F F1(fr)2.889 E(om)-.45 E F0 2.889(,t)C .388 |
|||
(hen read until the end of the \214le.)-2.889 F(If)5.388 E F1 |
|||
(\214lename)2.888 E F0(is)108 328.8 Q F2(NULL)2.5 E F0 2.5(,t)C |
|||
(hen read from)-2.5 E F1(~/.history)2.5 E F0 5(.R)C |
|||
(eturns 0 if successful, or)-5 E F2(err)2.5 E(no)-.15 E F0(if not.)2.5 E |
|||
F1(int)108 352.8 Q F2(write_history)2.5 E F0(\()4.166 E F1(const c)A |
|||
(har *\214lename)-.15 E F0(\))1.666 E .961(Write the current history to) |
|||
108 364.8 R F1(\214lename)3.461 E F0 3.461(,o)C -.15(ve)-3.611 G |
|||
(rwriting).15 E F1(\214lename)3.461 E F0 .961(if necessary)3.461 F 5.961 |
|||
(.I)-.65 G(f)-5.961 E F1(\214lename)3.462 E F0(is)3.462 E F2(NULL)3.462 |
|||
E F0 3.462(,t)C .962(hen write)-3.462 F(the history list to)108 376.8 Q |
|||
F1(~/.history)2.5 E F0 5(.R)C(eturns 0 on success, or)-5 E F2(err)2.5 E |
|||
(no)-.15 E F0(on a read or write error)2.5 E(.)-.55 E F1(int)108 412.8 Q |
|||
F2(append_history)2.5 E F0(\()4.166 E F1(int nelements,)A(const c)1.666 |
|||
E(har *\214lename)-.15 E F0(\))1.666 E .839(Append the last)108 424.8 R |
|||
F1(nelements)3.339 E F0 .839(of the history list to)3.339 F F1 |
|||
(\214lename)3.339 E F0 5.839(.I)C(f)-5.839 E F1(\214lename)3.339 E F0 |
|||
(is)3.339 E F2(NULL)3.339 E F0 3.339(,t)C .838(hen append to)-3.339 F F1 |
|||
(~/.history)3.338 E F0(.)A(Returns 0 on success, or)108 436.8 Q F2(err) |
|||
2.5 E(no)-.15 E F0(on a read or write error)2.5 E(.)-.55 E F1(int)108 |
|||
460.8 Q F2(history_truncate_\214le)2.5 E F0(\()4.166 E F1(const c)A |
|||
(har *\214lename)-.15 E 1.666(,i)-.1 G(nt nlines)-1.666 E F0(\))1.666 E |
|||
-.35(Tr)108 472.8 S .38(uncate the history \214le).35 F F1(\214lename) |
|||
2.88 E F0 2.88(,l)C(ea)-2.88 E .38(ving only the last)-.2 F F1(nlines) |
|||
2.881 E F0 2.881(lines. If)2.881 F F1(\214lename)2.881 E F0(is)2.881 E |
|||
F2(NULL)2.881 E F0 2.881(,t)C(hen)-2.881 E F1(~/.history)2.881 E F0(is) |
|||
2.881 E 2.5(truncated. Returns)108 484.8 R 2.5(0o)2.5 G 2.5(ns)-2.5 G |
|||
(uccess, or)-2.5 E F2(err)2.5 E(no)-.15 E F0(on f)2.5 E(ailure.)-.1 E F2 |
|||
(History Expansion)87 513.6 Q F0(These functions implement history e)108 |
|||
525.6 Q(xpansion.)-.15 E F1(int)108 549.6 Q F2(history_expand)2.5 E F0 |
|||
(\()4.166 E F1 -.15(ch)C(ar *string).15 E 1.666(,c)-.1 G(har **output) |
|||
-1.816 E F0(\))1.666 E(Expand)108 561.6 Q F1(string)2.5 E F0 2.5(,p)C |
|||
(lacing the result into)-2.5 E F1(output)2.5 E F0 2.5(,ap)C |
|||
(ointer to a string.)-2.5 E(Returns:)5 E 31(0I)144 573.6 S 3.066(fn)-31 |
|||
G 3.066(oe)-3.066 G .566(xpansions took place \(or)-3.216 F 3.065(,i)-.4 |
|||
G 3.065(ft)-3.065 G .565(he only change in the te)-3.065 F .565(xt w) |
|||
-.15 F .565(as the remo)-.1 F -.25(va)-.15 G 3.065(lo).25 G 3.065(fe) |
|||
-3.065 G(scape)-3.065 E(characters preceding the history e)180 585.6 Q |
|||
(xpansion character\);)-.15 E 31(1i)144 597.6 S 2.5(fe)-31 G |
|||
(xpansions did tak)-2.65 E 2.5(ep)-.1 G(lace;)-2.5 E 25.17(-1 if)144 |
|||
609.6 R(there w)2.5 E(as an error in e)-.1 E(xpansion;)-.15 E 31(2i)144 |
|||
621.6 S 2.5(ft)-31 G(he returned line should be displayed, b)-2.5 E |
|||
(ut not e)-.2 E -.15(xe)-.15 G(cuted, as with the).15 E F2(:p)2.5 E F0 |
|||
(modi\214er)2.5 E(.)-.55 E(If an error ocurred in e)108 633.6 Q |
|||
(xpansion, then)-.15 E F1(output)2.5 E F0(contains a descripti)2.5 E .3 |
|||
-.15(ve e)-.25 H(rror message.).15 E F1 -.15(ch)108 657.6 S(ar *).15 E |
|||
F2(get_history_e)2.5 E -.1(ve)-.15 G(nt).1 E F0(\()4.166 E F1(const c)A |
|||
(har *string)-.15 E 1.666(,i)-.1 G(nt *cinde)-1.666 E -.834(x, int)-.2 F |
|||
(qc)2.5 E(har)-.15 E F0(\))3.332 E .262(Returns the te)108 669.6 R .262 |
|||
(xt of the history e)-.15 F -.15(ve)-.25 G .262(nt be).15 F .263 |
|||
(ginning at)-.15 F F1(string)2.763 E F0(+)2.763 E F1(*cinde)2.763 E(x) |
|||
-.2 E F0(.)A F1(*cinde)5.263 E(x)-.2 E F0 .263 |
|||
(is modi\214ed to point to after the)2.763 F -2.15 -.25(ev e)108 681.6 T |
|||
.71(nt speci\214er).25 F 5.71(.A)-.55 G 3.21(tf)-5.71 G .71 |
|||
(unction entry)-3.21 F(,)-.65 E F1(cinde)3.21 E(x)-.2 E F0 .709 |
|||
(points to the inde)3.21 F 3.209(xi)-.15 G(nto)-3.209 E F1(string)3.209 |
|||
E F0 .709(where the history e)3.209 F -.15(ve)-.25 G .709 |
|||
(nt speci\214ca-).15 F .527(tion be)108 693.6 R(gins.)-.15 E F1(qc)5.527 |
|||
E(har)-.15 E F0 .527(is a character that is allo)3.027 F .527 |
|||
(wed to end the e)-.25 F -.15(ve)-.25 G .528 |
|||
(nt speci\214cation in addition to the `).15 F(`normal')-.74 E(')-.74 E |
|||
(terminating characters.)108 705.6 Q F1 -.15(ch)108 729.6 S(ar **).15 E |
|||
F2(history_tok)2.5 E(enize)-.1 E F0(\()4.166 E F1(const c)A(har *string) |
|||
-.15 E F0(\))1.666 E(GNU History 4.3)72 768 Q(2002 January 31)131.79 E |
|||
(5)195.95 E EP |
|||
%%Page: 6 6 |
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%%BeginPageSetup |
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BP |
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%%EndPageSetup |
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/F0 10/Times-Roman@0 SF(HIST)72 48 Q(OR)-.18 E 357.18(Y\(3\) HIST)-.65 F |
|||
(OR)-.18 E(Y\(3\))-.65 E .239(Return an array of tok)108 84 R .239 |
|||
(ens parsed out of)-.1 F/F1 10/Times-Italic@0 SF(string)2.739 E F0 2.739 |
|||
(,m)C .238(uch as the shell might.)-2.739 F .238(The tok)5.238 F .238 |
|||
(ens are split on the charac-)-.1 F(ters in the)108 96 Q/F2 10 |
|||
/Times-Bold@0 SF(history_w)2.5 E(ord_delimiters)-.1 E F0 -.25(va)2.5 G |
|||
(riable, and shell quoting con).25 E -.15(ve)-.4 G(ntions are obe).15 E |
|||
(yed.)-.15 E F1 -.15(ch)108 120 S(ar *).15 E F2(history_ar)2.5 E |
|||
(g_extract)-.1 E F0(\()4.166 E F1(int \214r)A -.834(st, int)-.1 F -.834 |
|||
(last, const)2.5 F -.15(ch)2.5 G(ar *string).15 E F0(\))3.332 E .025 |
|||
(Extract a string se)108 132 R .025(gment consisting of the)-.15 F F1 |
|||
<8c72>2.526 E(st)-.1 E F0(through)2.526 E F1(last)2.526 E F0(ar)2.526 E |
|||
.026(guments present in)-.18 F F1(string)2.526 E F0 5.026(.A)C -.18(rg) |
|||
-5.026 G .026(uments are split).18 F(using)108 144 Q F2(history_tok)2.5 |
|||
E(enize\(\))-.1 E F0(.)A F2(History V)87 172.8 Q(ariables)-.92 E F0 |
|||
(This section describes the e)108 184.8 Q(xternally-visible v)-.15 E |
|||
(ariables e)-.25 E(xported by the GNU History Library)-.15 E(.)-.65 E F1 |
|||
(int)108 208.8 Q F2(history_base)2.5 E F0(The logical of)108 220.8 Q |
|||
(fset of the \214rst entry in the history list.)-.25 E F1(int)108 244.8 |
|||
Q F2(history_length)2.5 E F0 |
|||
(The number of entries currently stored in the history list.)108 256.8 Q |
|||
F1(int)108 280.8 Q F2(history_max_entries)2.5 E F0 |
|||
(The maximum number of history entries.)108 292.8 Q |
|||
(This must be changed using)5 E F2(sti\215e_history\(\))2.5 E F0(.)A F1 |
|||
-.15(ch)108 316.8 S(ar).15 E F2(history_expansion_char)2.5 E F0 |
|||
(The character that introduces a history e)108 328.8 Q -.15(ve)-.25 G |
|||
2.5(nt. The).15 F(def)2.5 E(ault is)-.1 E F2(!)2.5 E F0 5(.S)C |
|||
(etting this to 0 inhibits history e)-5 E(xpansion.)-.15 E F1 -.15(ch) |
|||
108 352.8 S(ar).15 E F2(history_subst_char)2.5 E F0 |
|||
(The character that in)108 364.8 Q -.2(vo)-.4 G -.1(ke).2 G 2.5(sw).1 G |
|||
(ord substitution if found at the start of a line.)-2.6 E(The def)5 E |
|||
(ault is)-.1 E F2(^)2.5 E F0(.)A F1 -.15(ch)108 388.8 S(ar).15 E F2 |
|||
(history_comment_char)2.5 E F0 .117(During tok)108 400.8 R .117 |
|||
(enization, if this character is seen as the \214rst character of a w) |
|||
-.1 F .117(ord, then it and all subsequent char)-.1 F(-)-.2 E .276 |
|||
(acters up to a ne)108 412.8 R .276 |
|||
(wline are ignored, suppressing history e)-.25 F .276 |
|||
(xpansion for the remainder of the line.)-.15 F .277(This is dis-)5.276 |
|||
F(abled by def)108 424.8 Q(ault.)-.1 E F1 -.15(ch)108 448.8 S(ar *).15 E |
|||
F2(history_w)2.5 E(ord_delimiters)-.1 E F0 |
|||
(The characters that separate tok)108 460.8 Q(ens for)-.1 E F2 |
|||
(history_tok)2.5 E(enize\(\))-.1 E F0 5(.T)C(he def)-5 E(ault v)-.1 E |
|||
(alue is)-.25 E F2 2.5("\\)2.5 G(t\\n\(\)<>;&|")-2.5 E F0(.)A F1 -.15 |
|||
(ch)108 484.8 S(ar *).15 E F2(history_no_expand_chars)2.5 E F0 2.054 |
|||
(The list of characters which inhibit history e)108 496.8 R 2.054 |
|||
(xpansion if found immediately follo)-.15 F(wing)-.25 E F2 |
|||
(history_expan-)4.554 E(sion_char)108 508.8 Q F0 5(.T)C(he def)-5 E |
|||
(ault is space, tab, ne)-.1 E(wline,)-.25 E F2(\\r)2.5 E F0 2.5(,a)C(nd) |
|||
-2.5 E F2(=)2.5 E F0(.)A F1 -.15(ch)108 532.8 S(ar *).15 E F2 |
|||
(history_sear)2.5 E(ch_delimiter_chars)-.18 E F0 .401(The list of addit\ |
|||
ional characters which can delimit a history search string, in addition\ |
|||
to space, tab,)108 544.8 R F1(:)2.901 E F0(and)2.901 E F1(?)2.902 E F0 |
|||
(in the case of a substring search.)108 556.8 Q(The def)5 E |
|||
(ault is empty)-.1 E(.)-.65 E F1(int)108 580.8 Q F2 |
|||
(history_quotes_inhibit_expansion)2.5 E F0 .625 |
|||
(If non-zero, single-quoted w)108 592.8 R .625 |
|||
(ords are not scanned for the history e)-.1 F .624(xpansion character) |
|||
-.15 F 5.624(.T)-.55 G .624(he def)-5.624 F .624(ault v)-.1 F .624 |
|||
(alue is)-.25 F(0.)108 604.8 Q F1(rl_lineb)108 628.8 Q(uf_func_t *)-.2 E |
|||
F2(history_inhibit_expansion_function)2.5 E F0 .347 |
|||
(This should be set to the address of a function that tak)108 640.8 R |
|||
.348(es tw)-.1 F 2.848(oa)-.1 G -.18(rg)-2.848 G .348(uments: a).18 F F2 |
|||
.348(char *)2.848 F F0(\()2.848 E F1(string)A F0 2.848(\)a)C .348(nd an) |
|||
-2.848 F F2(int)2.848 E F0(inde)2.848 E(x)-.15 E .228 |
|||
(into that string \()108 652.8 R F1(i)A F0 2.728(\). It)B .227 |
|||
(should return a non-zero v)2.727 F .227(alue if the history e)-.25 F |
|||
.227(xpansion starting at)-.15 F F1(string[i])2.727 E F0 .227 |
|||
(should not)2.727 F .019(be performed; zero if the e)108 664.8 R .019 |
|||
(xpansion should be done.)-.15 F .019 |
|||
(It is intended for use by applications lik)5.019 F(e)-.1 E F2(bash) |
|||
2.519 E F0 .019(that use)2.519 F(the history e)108 676.8 Q |
|||
(xpansion character for additional purposes.)-.15 E(By def)5 E |
|||
(ault, this v)-.1 E(ariable is set to)-.25 E F2(NULL)2.5 E F0(.)A/F3 |
|||
10.95/Times-Bold@0 SF(FILES)72 693.6 Q F1(~/.history)109.666 705.6 Q F0 |
|||
(Def)144 717.6 Q(ault \214lename for reading and writing sa)-.1 E -.15 |
|||
(ve)-.2 G 2.5(dh).15 G(istory)-2.5 E(GNU History 4.3)72 768 Q |
|||
(2002 January 31)131.79 E(6)195.95 E EP |
|||
%%Page: 7 7 |
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%%BeginPageSetup |
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BP |
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%%EndPageSetup |
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/F0 10/Times-Roman@0 SF(HIST)72 48 Q(OR)-.18 E 357.18(Y\(3\) HIST)-.65 F |
|||
(OR)-.18 E(Y\(3\))-.65 E/F1 10.95/Times-Bold@0 SF(SEE ALSO)72 84 Q/F2 10 |
|||
/Times-Italic@0 SF(The Gnu Readline Libr)108 96 Q(ary)-.15 E F0 2.5(,B)C |
|||
(rian F)-2.5 E(ox and Chet Rame)-.15 E(y)-.15 E F2(The Gnu History Libr) |
|||
108 108 Q(ary)-.15 E F0 2.5(,B)C(rian F)-2.5 E(ox and Chet Rame)-.15 E |
|||
(y)-.15 E F2(bash)108 120 Q F0(\(1\))A F2 -.37(re)108 132 S(adline).37 E |
|||
F0(\(3\))A F1 -.548(AU)72 148.8 S(THORS).548 E F0(Brian F)108 160.8 Q |
|||
(ox, Free Softw)-.15 E(are F)-.1 E(oundation)-.15 E(bfox@gnu.or)108 |
|||
172.8 Q(g)-.18 E(Chet Rame)108 189.6 Q 1.3 -.65(y, C)-.15 H(ase W).65 E |
|||
(estern Reserv)-.8 E 2.5(eU)-.15 G(ni)-2.5 E -.15(ve)-.25 G(rsity).15 E |
|||
(chet@ins.CWR)108 201.6 Q(U.Edu)-.4 E F1 -.11(BU)72 218.4 S 2.738(GR).11 |
|||
G(EPOR)-2.738 E(TS)-.438 E F0 .16(If you \214nd a b)108 230.4 R .16 |
|||
(ug in the)-.2 F/F3 10/Times-Bold@0 SF(history)2.66 E F0(library)2.66 E |
|||
2.66(,y)-.65 G .16(ou should report it.)-2.66 F .16 |
|||
(But \214rst, you should mak)5.16 F 2.66(es)-.1 G .16 |
|||
(ure that it really is)-2.66 F 2.5(ab)108 242.4 S |
|||
(ug, and that it appears in the latest v)-2.7 E(ersion of the)-.15 E F3 |
|||
(history)2.5 E F0(library that you ha)2.5 E -.15(ve)-.2 G(.).15 E .704 |
|||
(Once you ha)108 259.2 R 1.004 -.15(ve d)-.2 H .704(etermined that a b) |
|||
.15 F .704(ug actually e)-.2 F .704(xists, mail a b)-.15 F .705 |
|||
(ug report to)-.2 F F2 -.2(bu)3.205 G(g\255r).2 E(eadline)-.37 E F0(@)A |
|||
F2(gnu.or)A(g)-.37 E F0 5.705(.I)C 3.205(fy)-5.705 G(ou)-3.205 E(ha)108 |
|||
271.2 Q 1.81 -.15(ve a \214)-.2 H 1.51 |
|||
(x, you are welcome to mail that as well!).15 F 1.509 |
|||
(Suggestions and `philosophical' b)6.509 F 1.509(ug reports may be)-.2 F |
|||
(mailed to)108 283.2 Q F2 -.2(bu)2.5 G(g-r).2 E(eadline)-.37 E F0(@)A F2 |
|||
(gnu.or)A(g)-.37 E F0(or posted to the Usenet ne)2.5 E(wsgroup)-.25 E F3 |
|||
(gnu.bash.b)2.5 E(ug)-.2 E F0(.)A(Comments and b)108 300 Q |
|||
(ug reports concerning this manual page should be directed to)-.2 E F2 |
|||
-.15(ch)2.5 G(et@ins.CWR).15 E -.25(U.)-.4 G(Edu).25 E F0(.).25 E |
|||
(GNU History 4.3)72 768 Q(2002 January 31)131.79 E(7)195.95 E EP |
|||
%%Trailer |
|||
end |
|||
%%EOF |
|||
File diff suppressed because it is too large
@ -0,0 +1,139 @@ |
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/*******************************************************************************
|
|||
* $Revision$ |
|||
* $Date$ |
|||
* $Author$ |
|||
* |
|||
* Contents: A streambuf which uses the GNU readline library for line I/O |
|||
* (c) 2001 by Dimitris Vyzovitis [vyzo@media.mit.edu] |
|||
* |
|||
* This program is free software; you can redistribute it and/or modify |
|||
* it under the terms of the GNU General Public License as published by |
|||
* the Free Software Foundation; either version 2 of the License, or |
|||
* (at your option) any later version. |
|||
* |
|||
* This program is distributed in the hope that it will be useful, |
|||
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
|||
* General Public License for more details. |
|||
* |
|||
* You should have received a copy of the GNU General Public |
|||
* License along with this program; if not, write to the Free |
|||
* Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, |
|||
* MA 02111-1307 USA |
|||
* |
|||
******************************************************************************/ |
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|
|||
#ifndef _READLINEBUF_H_ |
|||
#define _READLINEBUF_H_ |
|||
|
|||
#include <iostream> |
|||
#include <cstring> |
|||
#include <cassert> |
|||
#include <cstdlib> |
|||
#include <cstdio> |
|||
|
|||
#include <readline/readline.h> |
|||
#include <readline/history.h> |
|||
|
|||
#if (defined __GNUC__) && (__GNUC__ < 3) |
|||
#include <streambuf.h> |
|||
#else |
|||
#include <streambuf> |
|||
using std::streamsize; |
|||
using std::streambuf; |
|||
#endif |
|||
|
|||
class readlinebuf : public streambuf { |
|||
public: |
|||
#if (defined __GNUC__) && (__GNUC__ < 3) |
|||
typedef char char_type; |
|||
typedef int int_type; |
|||
typedef streampos pos_type; |
|||
typedef streamoff off_type; |
|||
#endif |
|||
static const int_type eof = EOF; // this is -1
|
|||
static const int_type not_eof = 0; |
|||
|
|||
private: |
|||
const char* prompt_; |
|||
bool history_; |
|||
char* line_; |
|||
int low_; |
|||
int high_; |
|||
|
|||
protected: |
|||
|
|||
virtual int_type showmanyc() const { return high_ - low_; } |
|||
|
|||
virtual streamsize xsgetn( char_type* buf, streamsize n ) { |
|||
int rd = n > (high_ - low_)? (high_ - low_) : n; |
|||
memcpy( buf, line_, rd ); |
|||
low_ += rd; |
|||
|
|||
if ( rd < n ) { |
|||
low_ = high_ = 0; |
|||
free( line_ ); // free( NULL ) is a noop
|
|||
line_ = readline( prompt_ ); |
|||
if ( line_ ) { |
|||
high_ = strlen( line_ ); |
|||
if ( history_ && high_ ) add_history( line_ ); |
|||
rd += xsgetn( buf + rd, n - rd ); |
|||
} |
|||
} |
|||
|
|||
return rd; |
|||
} |
|||
|
|||
virtual int_type underflow() { |
|||
if ( high_ == low_ ) { |
|||
low_ = high_ = 0; |
|||
free( line_ ); // free( NULL ) is a noop
|
|||
line_ = readline( prompt_ ); |
|||
if ( line_ ) { |
|||
high_ = strlen( line_ ); |
|||
if ( history_ && high_ ) add_history( line_ ); |
|||
} |
|||
} |
|||
|
|||
if ( low_ < high_ ) return line_[low_]; |
|||
else return eof; |
|||
} |
|||
|
|||
virtual int_type uflow() { |
|||
int_type c = underflow(); |
|||
if ( c != eof ) ++low_; |
|||
return c; |
|||
} |
|||
|
|||
virtual int_type pbackfail( int_type c = eof ) { |
|||
if ( low_ > 0 ) --low_; |
|||
else if ( c != eof ) { |
|||
if ( high_ > 0 ) { |
|||
char* nl = (char*)realloc( line_, high_ + 1 ); |
|||
if ( nl ) { |
|||
line_ = (char*)memcpy( nl + 1, line_, high_ ); |
|||
high_ += 1; |
|||
line_[0] = char( c ); |
|||
} else return eof; |
|||
} else { |
|||
assert( !line_ ); |
|||
line_ = (char*)malloc( sizeof( char ) ); |
|||
*line_ = char( c ); |
|||
high_ = 1; |
|||
} |
|||
} else return eof; |
|||
|
|||
return not_eof; |
|||
} |
|||
|
|||
public: |
|||
readlinebuf( const char* prompt = NULL, bool history = true ) |
|||
: prompt_( prompt ), history_( history ), |
|||
line_( NULL ), low_( 0 ), high_( 0 ) { |
|||
setbuf( 0, 0 ); |
|||
} |
|||
|
|||
|
|||
}; |
|||
|
|||
#endif |
|||
@ -0,0 +1,174 @@ |
|||
/*
|
|||
* rlcat - cat(1) using readline |
|||
* |
|||
* usage: rlcat |
|||
*/ |
|||
|
|||
/* Copyright (C) 1987-2002 Free Software Foundation, Inc.
|
|||
|
|||
This file is part of the GNU Readline Library, a library for |
|||
reading lines of text with interactive input and history editing. |
|||
|
|||
The GNU Readline Library is free software; you can redistribute it |
|||
and/or modify it under the terms of the GNU General Public License |
|||
as published by the Free Software Foundation; either version 2, or |
|||
(at your option) any later version. |
|||
|
|||
The GNU Readline Library is distributed in the hope that it will be |
|||
useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
|||
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|||
GNU General Public License for more details. |
|||
|
|||
The GNU General Public License is often shipped with GNU software, and |
|||
is generally kept in a file called COPYING or LICENSE. If you do not |
|||
have a copy of the license, write to the Free Software Foundation, |
|||
59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
|||
|
|||
#if defined (HAVE_CONFIG_H) |
|||
# include <config.h> |
|||
#endif |
|||
|
|||
#ifdef HAVE_UNISTD_H |
|||
# include <unistd.h> |
|||
#endif |
|||
|
|||
#include <sys/types.h> |
|||
#include "posixstat.h" |
|||
|
|||
#include <stdio.h> |
|||
#include <ctype.h> |
|||
#include <string.h> |
|||
#include <errno.h> |
|||
|
|||
#ifndef errno |
|||
extern int errno; |
|||
#endif |
|||
|
|||
#if defined (READLINE_LIBRARY) |
|||
# include "readline.h" |
|||
# include "history.h" |
|||
#else |
|||
# include <readline/readline.h> |
|||
# include <readline/history.h> |
|||
#endif |
|||
|
|||
extern int optind; |
|||
extern char *optarg; |
|||
|
|||
static int stdcat(); |
|||
|
|||
static char *progname; |
|||
static int vflag; |
|||
|
|||
static void |
|||
usage() |
|||
{ |
|||
fprintf (stderr, "%s: usage: %s [-vEVN] [filename]\n", progname, progname); |
|||
} |
|||
|
|||
int |
|||
main (argc, argv) |
|||
int argc; |
|||
char **argv; |
|||
{ |
|||
char *temp; |
|||
int opt, Vflag, Nflag; |
|||
|
|||
progname = strrchr(argv[0], '/'); |
|||
if (progname == 0) |
|||
progname = argv[0]; |
|||
else |
|||
progname++; |
|||
|
|||
vflag = Vflag = Nflag = 0; |
|||
while ((opt = getopt(argc, argv, "vEVN")) != EOF) |
|||
{ |
|||
switch (opt) |
|||
{ |
|||
case 'v': |
|||
vflag = 1; |
|||
break; |
|||
case 'V': |
|||
Vflag = 1; |
|||
break; |
|||
case 'E': |
|||
Vflag = 0; |
|||
break; |
|||
case 'N': |
|||
Nflag = 1; |
|||
break; |
|||
default: |
|||
usage (); |
|||
exit (2); |
|||
} |
|||
} |
|||
|
|||
argc -= optind; |
|||
argv += optind; |
|||
|
|||
if (isatty(0) == 0 || argc || Nflag) |
|||
return stdcat(argc, argv); |
|||
|
|||
rl_variable_bind ("editing-mode", Vflag ? "vi" : "emacs"); |
|||
while (temp = readline ("")) |
|||
{ |
|||
if (*temp) |
|||
add_history (temp); |
|||
printf ("%s\n", temp); |
|||
} |
|||
|
|||
return (ferror (stdout)); |
|||
} |
|||
|
|||
static int |
|||
fcopy(fp) |
|||
FILE *fp; |
|||
{ |
|||
int c; |
|||
char *x; |
|||
|
|||
while ((c = getc(fp)) != EOF) |
|||
{ |
|||
if (vflag && isascii ((unsigned char)c) && isprint((unsigned char)c) == 0) |
|||
{ |
|||
x = rl_untranslate_keyseq (c); |
|||
if (fputs (x, stdout) != 0) |
|||
return 1; |
|||
} |
|||
else if (putchar (c) == EOF) |
|||
return 1; |
|||
} |
|||
return (ferror (stdout)); |
|||
} |
|||
|
|||
int |
|||
stdcat (argc, argv) |
|||
int argc; |
|||
char **argv; |
|||
{ |
|||
int i, fd, r; |
|||
char *s; |
|||
FILE *fp; |
|||
|
|||
if (argc == 0) |
|||
return (fcopy(stdin)); |
|||
|
|||
for (i = 0, r = 1; i < argc; i++) |
|||
{ |
|||
if (*argv[i] == '-' && argv[i][1] == 0) |
|||
fp = stdin; |
|||
else |
|||
{ |
|||
fp = fopen (argv[i], "r"); |
|||
if (fp == 0) |
|||
{ |
|||
fprintf (stderr, "%s: %s: cannot open: %s\n", progname, argv[i], strerror(errno)); |
|||
continue; |
|||
} |
|||
} |
|||
r = fcopy (fp); |
|||
if (fp != stdin) |
|||
fclose(fp); |
|||
} |
|||
return r; |
|||
} |
|||
@ -0,0 +1,337 @@ |
|||
/* mbutil.c -- readline multibyte character utility functions */ |
|||
|
|||
/* Copyright (C) 2001 Free Software Foundation, Inc.
|
|||
|
|||
This file is part of the GNU Readline Library, a library for |
|||
reading lines of text with interactive input and history editing. |
|||
|
|||
The GNU Readline Library is free software; you can redistribute it |
|||
and/or modify it under the terms of the GNU General Public License |
|||
as published by the Free Software Foundation; either version 2, or |
|||
(at your option) any later version. |
|||
|
|||
The GNU Readline Library is distributed in the hope that it will be |
|||
useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
|||
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|||
GNU General Public License for more details. |
|||
|
|||
The GNU General Public License is often shipped with GNU software, and |
|||
is generally kept in a file called COPYING or LICENSE. If you do not |
|||
have a copy of the license, write to the Free Software Foundation, |
|||
59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
|||
#define READLINE_LIBRARY |
|||
|
|||
#if defined (HAVE_CONFIG_H) |
|||
# include <config.h> |
|||
#endif |
|||
|
|||
#include <sys/types.h> |
|||
#include <fcntl.h> |
|||
#include "posixjmp.h" |
|||
|
|||
#if defined (HAVE_UNISTD_H) |
|||
# include <unistd.h> /* for _POSIX_VERSION */ |
|||
#endif /* HAVE_UNISTD_H */ |
|||
|
|||
#if defined (HAVE_STDLIB_H) |
|||
# include <stdlib.h> |
|||
#else |
|||
# include "ansi_stdlib.h" |
|||
#endif /* HAVE_STDLIB_H */ |
|||
|
|||
#include <stdio.h> |
|||
#include <ctype.h> |
|||
|
|||
/* System-specific feature definitions and include files. */ |
|||
#include "rldefs.h" |
|||
#include "rlmbutil.h" |
|||
|
|||
#if defined (TIOCSTAT_IN_SYS_IOCTL) |
|||
# include <sys/ioctl.h> |
|||
#endif /* TIOCSTAT_IN_SYS_IOCTL */ |
|||
|
|||
/* Some standard library routines. */ |
|||
#include "readline.h" |
|||
|
|||
#include "rlprivate.h" |
|||
#include "xmalloc.h" |
|||
|
|||
/* Declared here so it can be shared between the readline and history
|
|||
libraries. */ |
|||
#if defined (HANDLE_MULTIBYTE) |
|||
int rl_byte_oriented = 0; |
|||
#else |
|||
int rl_byte_oriented = 1; |
|||
#endif |
|||
|
|||
/* **************************************************************** */ |
|||
/* */ |
|||
/* Multibyte Character Utility Functions */ |
|||
/* */ |
|||
/* **************************************************************** */ |
|||
|
|||
#if defined(HANDLE_MULTIBYTE) |
|||
|
|||
static int |
|||
_rl_find_next_mbchar_internal (string, seed, count, find_non_zero) |
|||
char *string; |
|||
int seed, count, find_non_zero; |
|||
{ |
|||
size_t tmp = 0; |
|||
mbstate_t ps; |
|||
int point = 0; |
|||
wchar_t wc; |
|||
|
|||
memset(&ps, 0, sizeof (mbstate_t)); |
|||
if (seed < 0) |
|||
seed = 0; |
|||
if (count <= 0) |
|||
return seed; |
|||
|
|||
point = seed + _rl_adjust_point(string, seed, &ps); |
|||
/* if this is true, means that seed was not pointed character
|
|||
started byte. So correct the point and consume count */ |
|||
if (seed < point) |
|||
count --; |
|||
|
|||
while (count > 0) |
|||
{ |
|||
tmp = mbrtowc (&wc, string+point, strlen(string + point), &ps); |
|||
if ((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2) |
|||
{ |
|||
/* invalid bytes. asume a byte represents a character */ |
|||
point++; |
|||
count--; |
|||
/* reset states. */ |
|||
memset(&ps, 0, sizeof(mbstate_t)); |
|||
} |
|||
else if (tmp == (size_t)0) |
|||
/* found '\0' char */ |
|||
break; |
|||
else |
|||
{ |
|||
/* valid bytes */ |
|||
point += tmp; |
|||
if (find_non_zero) |
|||
{ |
|||
if (wcwidth (wc) == 0) |
|||
continue; |
|||
else |
|||
count--; |
|||
} |
|||
else |
|||
count--; |
|||
} |
|||
} |
|||
|
|||
if (find_non_zero) |
|||
{ |
|||
tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps); |
|||
while (wcwidth (wc) == 0) |
|||
{ |
|||
point += tmp; |
|||
tmp = mbrtowc (&wc, string + point, strlen (string + point), &ps); |
|||
if (tmp == (size_t)(0) || tmp == (size_t)(-1) || tmp == (size_t)(-2)) |
|||
break; |
|||
} |
|||
} |
|||
return point; |
|||
} |
|||
|
|||
static int |
|||
_rl_find_prev_mbchar_internal (string, seed, find_non_zero) |
|||
char *string; |
|||
int seed, find_non_zero; |
|||
{ |
|||
mbstate_t ps; |
|||
int prev, non_zero_prev, point, length; |
|||
size_t tmp; |
|||
wchar_t wc; |
|||
|
|||
memset(&ps, 0, sizeof(mbstate_t)); |
|||
length = strlen(string); |
|||
|
|||
if (seed < 0) |
|||
return 0; |
|||
else if (length < seed) |
|||
return length; |
|||
|
|||
prev = non_zero_prev = point = 0; |
|||
while (point < seed) |
|||
{ |
|||
tmp = mbrtowc (&wc, string + point, length - point, &ps); |
|||
if ((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2) |
|||
{ |
|||
/* in this case, bytes are invalid or shorted to compose
|
|||
multibyte char, so assume that the first byte represents |
|||
a single character anyway. */ |
|||
tmp = 1; |
|||
/* clear the state of the byte sequence, because
|
|||
in this case effect of mbstate is undefined */ |
|||
memset(&ps, 0, sizeof (mbstate_t)); |
|||
} |
|||
else if (tmp == 0) |
|||
break; /* Found '\0' char. Can this happen? */ |
|||
else |
|||
{ |
|||
if (find_non_zero) |
|||
{ |
|||
if (wcwidth (wc) != 0) |
|||
prev = point; |
|||
} |
|||
else |
|||
prev = point; |
|||
} |
|||
|
|||
point += tmp; |
|||
} |
|||
|
|||
return prev; |
|||
} |
|||
|
|||
/* return the number of bytes parsed from the multibyte sequence starting
|
|||
at src, if a non-L'\0' wide character was recognized. It returns 0, |
|||
if a L'\0' wide character was recognized. It returns (size_t)(-1), |
|||
if an invalid multibyte sequence was encountered. It returns (size_t)(-2) |
|||
if it couldn't parse a complete multibyte character. */ |
|||
int |
|||
_rl_get_char_len (src, ps) |
|||
char *src; |
|||
mbstate_t *ps; |
|||
{ |
|||
size_t tmp; |
|||
|
|||
tmp = mbrlen((const char *)src, (size_t)strlen (src), ps); |
|||
if (tmp == (size_t)(-2)) |
|||
{ |
|||
/* shorted to compose multibyte char */ |
|||
memset (ps, 0, sizeof(mbstate_t)); |
|||
return -2; |
|||
} |
|||
else if (tmp == (size_t)(-1)) |
|||
{ |
|||
/* invalid to compose multibyte char */ |
|||
/* initialize the conversion state */ |
|||
memset (ps, 0, sizeof(mbstate_t)); |
|||
return -1; |
|||
} |
|||
else if (tmp == (size_t)0) |
|||
return 0; |
|||
else |
|||
return (int)tmp; |
|||
} |
|||
|
|||
/* compare the specified two characters. If the characters matched,
|
|||
return 1. Otherwise return 0. */ |
|||
int |
|||
_rl_compare_chars (buf1, pos1, ps1, buf2, pos2, ps2) |
|||
char *buf1, *buf2; |
|||
mbstate_t *ps1, *ps2; |
|||
int pos1, pos2; |
|||
{ |
|||
int i, w1, w2; |
|||
|
|||
if ((w1 = _rl_get_char_len (&buf1[pos1], ps1)) <= 0 || |
|||
(w2 = _rl_get_char_len (&buf2[pos2], ps2)) <= 0 || |
|||
(w1 != w2) || |
|||
(buf1[pos1] != buf2[pos2])) |
|||
return 0; |
|||
|
|||
for (i = 1; i < w1; i++) |
|||
if (buf1[pos1+i] != buf2[pos2+i]) |
|||
return 0; |
|||
|
|||
return 1; |
|||
} |
|||
|
|||
/* adjust pointed byte and find mbstate of the point of string.
|
|||
adjusted point will be point <= adjusted_point, and returns |
|||
differences of the byte(adjusted_point - point). |
|||
if point is invalied (point < 0 || more than string length), |
|||
it returns -1 */ |
|||
int |
|||
_rl_adjust_point(string, point, ps) |
|||
char *string; |
|||
int point; |
|||
mbstate_t *ps; |
|||
{ |
|||
size_t tmp = 0; |
|||
int length; |
|||
int pos = 0; |
|||
|
|||
length = strlen(string); |
|||
if (point < 0) |
|||
return -1; |
|||
if (length < point) |
|||
return -1; |
|||
|
|||
while (pos < point) |
|||
{ |
|||
tmp = mbrlen (string + pos, length - pos, ps); |
|||
if((size_t)(tmp) == (size_t)-1 || (size_t)(tmp) == (size_t)-2) |
|||
{ |
|||
/* in this case, bytes are invalid or shorted to compose
|
|||
multibyte char, so assume that the first byte represents |
|||
a single character anyway. */ |
|||
pos++; |
|||
/* clear the state of the byte sequence, because
|
|||
in this case effect of mbstate is undefined */ |
|||
memset (ps, 0, sizeof (mbstate_t)); |
|||
} |
|||
else |
|||
pos += tmp; |
|||
} |
|||
|
|||
return (pos - point); |
|||
} |
|||
|
|||
int |
|||
_rl_is_mbchar_matched (string, seed, end, mbchar, length) |
|||
char *string; |
|||
int seed, end; |
|||
char *mbchar; |
|||
int length; |
|||
{ |
|||
int i; |
|||
|
|||
if ((end - seed) < length) |
|||
return 0; |
|||
|
|||
for (i = 0; i < length; i++) |
|||
if (string[seed + i] != mbchar[i]) |
|||
return 0; |
|||
return 1; |
|||
} |
|||
#endif /* HANDLE_MULTIBYTE */ |
|||
|
|||
/* Find next `count' characters started byte point of the specified seed.
|
|||
If flags is MB_FIND_NONZERO, we look for non-zero-width multibyte |
|||
characters. */ |
|||
#undef _rl_find_next_mbchar |
|||
int |
|||
_rl_find_next_mbchar (string, seed, count, flags) |
|||
char *string; |
|||
int seed, count, flags; |
|||
{ |
|||
#if defined (HANDLE_MULTIBYTE) |
|||
return _rl_find_next_mbchar_internal (string, seed, count, flags); |
|||
#else |
|||
return (seed + count); |
|||
#endif |
|||
} |
|||
|
|||
/* Find previous character started byte point of the specified seed.
|
|||
Returned point will be point <= seed. If flags is MB_FIND_NONZERO, |
|||
we look for non-zero-width multibyte characters. */ |
|||
#undef _rl_find_prev_mbchar |
|||
int |
|||
_rl_find_prev_mbchar (string, seed, flags) |
|||
char *string; |
|||
int seed, flags; |
|||
{ |
|||
#if defined (HANDLE_MULTIBYTE) |
|||
return _rl_find_prev_mbchar_internal (string, seed, flags); |
|||
#else |
|||
return ((seed == 0) ? seed : seed - 1); |
|||
#endif |
|||
} |
|||
@ -0,0 +1,496 @@ |
|||
/* misc.c -- miscellaneous bindable readline functions. */ |
|||
|
|||
/* Copyright (C) 1987-2002 Free Software Foundation, Inc.
|
|||
|
|||
This file is part of the GNU Readline Library, a library for |
|||
reading lines of text with interactive input and history editing. |
|||
|
|||
The GNU Readline Library is free software; you can redistribute it |
|||
and/or modify it under the terms of the GNU General Public License |
|||
as published by the Free Software Foundation; either version 2, or |
|||
(at your option) any later version. |
|||
|
|||
The GNU Readline Library is distributed in the hope that it will be |
|||
useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
|||
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|||
GNU General Public License for more details. |
|||
|
|||
The GNU General Public License is often shipped with GNU software, and |
|||
is generally kept in a file called COPYING or LICENSE. If you do not |
|||
have a copy of the license, write to the Free Software Foundation, |
|||
59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
|||
#define READLINE_LIBRARY |
|||
|
|||
#if defined (HAVE_CONFIG_H) |
|||
# include <config.h> |
|||
#endif |
|||
|
|||
#if defined (HAVE_UNISTD_H) |
|||
# include <unistd.h> |
|||
#endif /* HAVE_UNISTD_H */ |
|||
|
|||
#if defined (HAVE_STDLIB_H) |
|||
# include <stdlib.h> |
|||
#else |
|||
# include "ansi_stdlib.h" |
|||
#endif /* HAVE_STDLIB_H */ |
|||
|
|||
#if defined (HAVE_LOCALE_H) |
|||
# include <locale.h> |
|||
#endif |
|||
|
|||
#include <stdio.h> |
|||
|
|||
/* System-specific feature definitions and include files. */ |
|||
#include "rldefs.h" |
|||
#include "rlmbutil.h" |
|||
|
|||
/* Some standard library routines. */ |
|||
#include "readline.h" |
|||
#include "history.h" |
|||
|
|||
#include "rlprivate.h" |
|||
#include "rlshell.h" |
|||
#include "xmalloc.h" |
|||
|
|||
static int rl_digit_loop PARAMS((void)); |
|||
static void _rl_history_set_point PARAMS((void)); |
|||
|
|||
/* Forward declarations used in this file */ |
|||
void _rl_free_history_entry PARAMS((HIST_ENTRY *)); |
|||
|
|||
/* If non-zero, rl_get_previous_history and rl_get_next_history attempt
|
|||
to preserve the value of rl_point from line to line. */ |
|||
int _rl_history_preserve_point = 0; |
|||
|
|||
/* Saved target point for when _rl_history_preserve_point is set. Special
|
|||
value of -1 means that point is at the end of the line. */ |
|||
int _rl_history_saved_point = -1; |
|||
|
|||
/* **************************************************************** */ |
|||
/* */ |
|||
/* Numeric Arguments */ |
|||
/* */ |
|||
/* **************************************************************** */ |
|||
|
|||
/* Handle C-u style numeric args, as well as M--, and M-digits. */ |
|||
static int |
|||
rl_digit_loop () |
|||
{ |
|||
int key, c, sawminus, sawdigits; |
|||
|
|||
rl_save_prompt (); |
|||
|
|||
RL_SETSTATE(RL_STATE_NUMERICARG); |
|||
sawminus = sawdigits = 0; |
|||
while (1) |
|||
{ |
|||
if (rl_numeric_arg > 1000000) |
|||
{ |
|||
sawdigits = rl_explicit_arg = rl_numeric_arg = 0; |
|||
rl_ding (); |
|||
rl_restore_prompt (); |
|||
rl_clear_message (); |
|||
RL_UNSETSTATE(RL_STATE_NUMERICARG); |
|||
return 1; |
|||
} |
|||
rl_message ("(arg: %d) ", rl_arg_sign * rl_numeric_arg); |
|||
RL_SETSTATE(RL_STATE_MOREINPUT); |
|||
key = c = rl_read_key (); |
|||
RL_UNSETSTATE(RL_STATE_MOREINPUT); |
|||
|
|||
if (c < 0) |
|||
{ |
|||
_rl_abort_internal (); |
|||
return -1; |
|||
} |
|||
|
|||
/* If we see a key bound to `universal-argument' after seeing digits,
|
|||
it ends the argument but is otherwise ignored. */ |
|||
if (_rl_keymap[c].type == ISFUNC && |
|||
_rl_keymap[c].function == rl_universal_argument) |
|||
{ |
|||
if (sawdigits == 0) |
|||
{ |
|||
rl_numeric_arg *= 4; |
|||
continue; |
|||
} |
|||
else |
|||
{ |
|||
RL_SETSTATE(RL_STATE_MOREINPUT); |
|||
key = rl_read_key (); |
|||
RL_UNSETSTATE(RL_STATE_MOREINPUT); |
|||
rl_restore_prompt (); |
|||
rl_clear_message (); |
|||
RL_UNSETSTATE(RL_STATE_NUMERICARG); |
|||
return (_rl_dispatch (key, _rl_keymap)); |
|||
} |
|||
} |
|||
|
|||
c = UNMETA (c); |
|||
|
|||
if (_rl_digit_p (c)) |
|||
{ |
|||
rl_numeric_arg = rl_explicit_arg ? (rl_numeric_arg * 10) + c - '0' : c - '0'; |
|||
sawdigits = rl_explicit_arg = 1; |
|||
} |
|||
else if (c == '-' && rl_explicit_arg == 0) |
|||
{ |
|||
rl_numeric_arg = sawminus = 1; |
|||
rl_arg_sign = -1; |
|||
} |
|||
else |
|||
{ |
|||
/* Make M-- command equivalent to M--1 command. */ |
|||
if (sawminus && rl_numeric_arg == 1 && rl_explicit_arg == 0) |
|||
rl_explicit_arg = 1; |
|||
rl_restore_prompt (); |
|||
rl_clear_message (); |
|||
RL_UNSETSTATE(RL_STATE_NUMERICARG); |
|||
return (_rl_dispatch (key, _rl_keymap)); |
|||
} |
|||
} |
|||
|
|||
/*NOTREACHED*/ |
|||
} |
|||
|
|||
/* Add the current digit to the argument in progress. */ |
|||
int |
|||
rl_digit_argument (ignore, key) |
|||
int ignore, key; |
|||
{ |
|||
rl_execute_next (key); |
|||
return (rl_digit_loop ()); |
|||
} |
|||
|
|||
/* What to do when you abort reading an argument. */ |
|||
int |
|||
rl_discard_argument () |
|||
{ |
|||
rl_ding (); |
|||
rl_clear_message (); |
|||
_rl_init_argument (); |
|||
return 0; |
|||
} |
|||
|
|||
/* Create a default argument. */ |
|||
int |
|||
_rl_init_argument () |
|||
{ |
|||
rl_numeric_arg = rl_arg_sign = 1; |
|||
rl_explicit_arg = 0; |
|||
return 0; |
|||
} |
|||
|
|||
/* C-u, universal argument. Multiply the current argument by 4.
|
|||
Read a key. If the key has nothing to do with arguments, then |
|||
dispatch on it. If the key is the abort character then abort. */ |
|||
int |
|||
rl_universal_argument (count, key) |
|||
int count, key; |
|||
{ |
|||
rl_numeric_arg *= 4; |
|||
return (rl_digit_loop ()); |
|||
} |
|||
|
|||
/* **************************************************************** */ |
|||
/* */ |
|||
/* History Utilities */ |
|||
/* */ |
|||
/* **************************************************************** */ |
|||
|
|||
/* We already have a history library, and that is what we use to control
|
|||
the history features of readline. This is our local interface to |
|||
the history mechanism. */ |
|||
|
|||
/* While we are editing the history, this is the saved
|
|||
version of the original line. */ |
|||
HIST_ENTRY *_rl_saved_line_for_history = (HIST_ENTRY *)NULL; |
|||
|
|||
/* Set the history pointer back to the last entry in the history. */ |
|||
void |
|||
_rl_start_using_history () |
|||
{ |
|||
using_history (); |
|||
if (_rl_saved_line_for_history) |
|||
_rl_free_history_entry (_rl_saved_line_for_history); |
|||
|
|||
_rl_saved_line_for_history = (HIST_ENTRY *)NULL; |
|||
} |
|||
|
|||
/* Free the contents (and containing structure) of a HIST_ENTRY. */ |
|||
void |
|||
_rl_free_history_entry (entry) |
|||
HIST_ENTRY *entry; |
|||
{ |
|||
if (entry == 0) |
|||
return; |
|||
if (entry->line) |
|||
free (entry->line); |
|||
free (entry); |
|||
} |
|||
|
|||
/* Perhaps put back the current line if it has changed. */ |
|||
int |
|||
rl_maybe_replace_line () |
|||
{ |
|||
HIST_ENTRY *temp; |
|||
|
|||
temp = current_history (); |
|||
/* If the current line has changed, save the changes. */ |
|||
if (temp && ((UNDO_LIST *)(temp->data) != rl_undo_list)) |
|||
{ |
|||
temp = replace_history_entry (where_history (), rl_line_buffer, (histdata_t)rl_undo_list); |
|||
free (temp->line); |
|||
free (temp); |
|||
} |
|||
return 0; |
|||
} |
|||
|
|||
/* Restore the _rl_saved_line_for_history if there is one. */ |
|||
int |
|||
rl_maybe_unsave_line () |
|||
{ |
|||
if (_rl_saved_line_for_history) |
|||
{ |
|||
rl_replace_line (_rl_saved_line_for_history->line, 0); |
|||
rl_undo_list = (UNDO_LIST *)_rl_saved_line_for_history->data; |
|||
_rl_free_history_entry (_rl_saved_line_for_history); |
|||
_rl_saved_line_for_history = (HIST_ENTRY *)NULL; |
|||
rl_point = rl_end; /* rl_replace_line sets rl_end */ |
|||
} |
|||
else |
|||
rl_ding (); |
|||
return 0; |
|||
} |
|||
|
|||
/* Save the current line in _rl_saved_line_for_history. */ |
|||
int |
|||
rl_maybe_save_line () |
|||
{ |
|||
if (_rl_saved_line_for_history == 0) |
|||
{ |
|||
_rl_saved_line_for_history = (HIST_ENTRY *)xmalloc (sizeof (HIST_ENTRY)); |
|||
_rl_saved_line_for_history->line = savestring (rl_line_buffer); |
|||
_rl_saved_line_for_history->data = (char *)rl_undo_list; |
|||
} |
|||
return 0; |
|||
} |
|||
|
|||
int |
|||
_rl_free_saved_history_line () |
|||
{ |
|||
if (_rl_saved_line_for_history) |
|||
{ |
|||
_rl_free_history_entry (_rl_saved_line_for_history); |
|||
_rl_saved_line_for_history = (HIST_ENTRY *)NULL; |
|||
} |
|||
return 0; |
|||
} |
|||
|
|||
static void |
|||
_rl_history_set_point () |
|||
{ |
|||
rl_point = (_rl_history_preserve_point && _rl_history_saved_point != -1) |
|||
? _rl_history_saved_point |
|||
: rl_end; |
|||
if (rl_point > rl_end) |
|||
rl_point = rl_end; |
|||
|
|||
#if defined (VI_MODE) |
|||
if (rl_editing_mode == vi_mode) |
|||
rl_point = 0; |
|||
#endif /* VI_MODE */ |
|||
|
|||
if (rl_editing_mode == emacs_mode) |
|||
rl_mark = (rl_point == rl_end ? 0 : rl_end); |
|||
} |
|||
|
|||
void |
|||
rl_replace_from_history (entry, flags) |
|||
HIST_ENTRY *entry; |
|||
int flags; /* currently unused */ |
|||
{ |
|||
rl_replace_line (entry->line, 0); |
|||
rl_undo_list = (UNDO_LIST *)entry->data; |
|||
rl_point = rl_end; |
|||
rl_mark = 0; |
|||
|
|||
#if defined (VI_MODE) |
|||
if (rl_editing_mode == vi_mode) |
|||
{ |
|||
rl_point = 0; |
|||
rl_mark = rl_end; |
|||
} |
|||
#endif |
|||
} |
|||
|
|||
/* **************************************************************** */ |
|||
/* */ |
|||
/* History Commands */ |
|||
/* */ |
|||
/* **************************************************************** */ |
|||
|
|||
/* Meta-< goes to the start of the history. */ |
|||
int |
|||
rl_beginning_of_history (count, key) |
|||
int count, key; |
|||
{ |
|||
return (rl_get_previous_history (1 + where_history (), key)); |
|||
} |
|||
|
|||
/* Meta-> goes to the end of the history. (The current line). */ |
|||
int |
|||
rl_end_of_history (count, key) |
|||
int count, key; |
|||
{ |
|||
rl_maybe_replace_line (); |
|||
using_history (); |
|||
rl_maybe_unsave_line (); |
|||
return 0; |
|||
} |
|||
|
|||
/* Move down to the next history line. */ |
|||
int |
|||
rl_get_next_history (count, key) |
|||
int count, key; |
|||
{ |
|||
HIST_ENTRY *temp; |
|||
|
|||
if (count < 0) |
|||
return (rl_get_previous_history (-count, key)); |
|||
|
|||
if (count == 0) |
|||
return 0; |
|||
|
|||
rl_maybe_replace_line (); |
|||
|
|||
/* either not saved by rl_newline or at end of line, so set appropriately. */ |
|||
if (_rl_history_saved_point == -1 && (rl_point || rl_end)) |
|||
_rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point; |
|||
|
|||
temp = (HIST_ENTRY *)NULL; |
|||
while (count) |
|||
{ |
|||
temp = next_history (); |
|||
if (!temp) |
|||
break; |
|||
--count; |
|||
} |
|||
|
|||
if (temp == 0) |
|||
rl_maybe_unsave_line (); |
|||
else |
|||
{ |
|||
rl_replace_from_history (temp, 0); |
|||
_rl_history_set_point (); |
|||
} |
|||
return 0; |
|||
} |
|||
|
|||
/* Get the previous item out of our interactive history, making it the current
|
|||
line. If there is no previous history, just ding. */ |
|||
int |
|||
rl_get_previous_history (count, key) |
|||
int count, key; |
|||
{ |
|||
HIST_ENTRY *old_temp, *temp; |
|||
|
|||
if (count < 0) |
|||
return (rl_get_next_history (-count, key)); |
|||
|
|||
if (count == 0) |
|||
return 0; |
|||
|
|||
/* either not saved by rl_newline or at end of line, so set appropriately. */ |
|||
if (_rl_history_saved_point == -1 && (rl_point || rl_end)) |
|||
_rl_history_saved_point = (rl_point == rl_end) ? -1 : rl_point; |
|||
|
|||
/* If we don't have a line saved, then save this one. */ |
|||
rl_maybe_save_line (); |
|||
|
|||
/* If the current line has changed, save the changes. */ |
|||
rl_maybe_replace_line (); |
|||
|
|||
temp = old_temp = (HIST_ENTRY *)NULL; |
|||
while (count) |
|||
{ |
|||
temp = previous_history (); |
|||
if (temp == 0) |
|||
break; |
|||
|
|||
old_temp = temp; |
|||
--count; |
|||
} |
|||
|
|||
/* If there was a large argument, and we moved back to the start of the
|
|||
history, that is not an error. So use the last value found. */ |
|||
if (!temp && old_temp) |
|||
temp = old_temp; |
|||
|
|||
if (temp == 0) |
|||
rl_ding (); |
|||
else |
|||
{ |
|||
rl_replace_from_history (temp, 0); |
|||
_rl_history_set_point (); |
|||
} |
|||
return 0; |
|||
} |
|||
|
|||
/* **************************************************************** */ |
|||
/* */ |
|||
/* Editing Modes */ |
|||
/* */ |
|||
/* **************************************************************** */ |
|||
/* How to toggle back and forth between editing modes. */ |
|||
int |
|||
rl_vi_editing_mode (count, key) |
|||
int count, key; |
|||
{ |
|||
#if defined (VI_MODE) |
|||
_rl_set_insert_mode (RL_IM_INSERT, 1); /* vi mode ignores insert mode */ |
|||
rl_editing_mode = vi_mode; |
|||
rl_vi_insertion_mode (1, key); |
|||
#endif /* VI_MODE */ |
|||
|
|||
return 0; |
|||
} |
|||
|
|||
int |
|||
rl_emacs_editing_mode (count, key) |
|||
int count, key; |
|||
{ |
|||
rl_editing_mode = emacs_mode; |
|||
_rl_set_insert_mode (RL_IM_INSERT, 1); /* emacs mode default is insert mode */ |
|||
_rl_keymap = emacs_standard_keymap; |
|||
return 0; |
|||
} |
|||
|
|||
/* Function for the rest of the library to use to set insert/overwrite mode. */ |
|||
void |
|||
_rl_set_insert_mode (im, force) |
|||
int im, force; |
|||
{ |
|||
#ifdef CURSOR_MODE |
|||
_rl_set_cursor (im, force); |
|||
#endif |
|||
|
|||
rl_insert_mode = im; |
|||
} |
|||
|
|||
/* Toggle overwrite mode. A positive explicit argument selects overwrite
|
|||
mode. A negative or zero explicit argument selects insert mode. */ |
|||
int |
|||
rl_overwrite_mode (count, key) |
|||
int count, key; |
|||
{ |
|||
if (rl_explicit_arg == 0) |
|||
_rl_set_insert_mode (rl_insert_mode ^ 1, 0); |
|||
else if (count > 0) |
|||
_rl_set_insert_mode (RL_IM_OVERWRITE, 0); |
|||
else |
|||
_rl_set_insert_mode (RL_IM_INSERT, 0); |
|||
|
|||
return 0; |
|||
} |
|||
@ -0,0 +1,108 @@ |
|||
/* rlmbutil.h -- utility functions for multibyte characters. */ |
|||
|
|||
/* Copyright (C) 2001 Free Software Foundation, Inc.
|
|||
|
|||
This file is part of the GNU Readline Library, a library for |
|||
reading lines of text with interactive input and history editing. |
|||
|
|||
The GNU Readline Library is free software; you can redistribute it |
|||
and/or modify it under the terms of the GNU General Public License |
|||
as published by the Free Software Foundation; either version 2, or |
|||
(at your option) any later version. |
|||
|
|||
The GNU Readline Library is distributed in the hope that it will be |
|||
useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
|||
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|||
GNU General Public License for more details. |
|||
|
|||
The GNU General Public License is often shipped with GNU software, and |
|||
is generally kept in a file called COPYING or LICENSE. If you do not |
|||
have a copy of the license, write to the Free Software Foundation, |
|||
59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
|||
|
|||
#if !defined (_RL_MBUTIL_H_) |
|||
#define _RL_MBUTIL_H_ |
|||
|
|||
#include "rlstdc.h" |
|||
|
|||
/************************************************/ |
|||
/* check multibyte capability for I18N code */ |
|||
/************************************************/ |
|||
|
|||
/* For platforms which support the ISO C amendement 1 functionality we
|
|||
support user defined character classes. */ |
|||
/* Solaris 2.5 has a bug: <wchar.h> must be included before <wctype.h>. */ |
|||
#if defined (HAVE_WCTYPE_H) && defined (HAVE_WCHAR_H) |
|||
# include <wchar.h> |
|||
# include <wctype.h> |
|||
# if defined (HAVE_MBSRTOWCS) /* system is supposed to support XPG5 */ |
|||
# define HANDLE_MULTIBYTE 1 |
|||
# endif |
|||
#endif |
|||
|
|||
/* Some systems, like BeOS, have multibyte encodings but lack mbstate_t. */ |
|||
#if HANDLE_MULTIBYTE && !defined (HAVE_MBSTATE_T) |
|||
# define wcsrtombs(dest, src, len, ps) (wcsrtombs) (dest, src, len, 0) |
|||
# define mbsrtowcs(dest, src, len, ps) (mbsrtowcs) (dest, src, len, 0) |
|||
# define wcrtomb(s, wc, ps) (wcrtomb) (s, wc, 0) |
|||
# define mbrtowc(pwc, s, n, ps) (mbrtowc) (pwc, s, n, 0) |
|||
# define mbrlen(s, n, ps) (mbrlen) (s, n, 0) |
|||
# define mbstate_t int |
|||
#endif |
|||
|
|||
/* Make sure MB_LEN_MAX is at least 16 on systems that claim to be able to
|
|||
handle multibyte chars (some systems define MB_LEN_MAX as 1) */ |
|||
#ifdef HANDLE_MULTIBYTE |
|||
# include <limits.h> |
|||
# if defined(MB_LEN_MAX) && (MB_LEN_MAX < 16) |
|||
# undef MB_LEN_MAX |
|||
# endif |
|||
# if !defined (MB_LEN_MAX) |
|||
# define MB_LEN_MAX 16 |
|||
# endif |
|||
#endif |
|||
|
|||
/************************************************/ |
|||
/* end of multibyte capability checks for I18N */ |
|||
/************************************************/ |
|||
|
|||
/*
|
|||
* Flags for _rl_find_prev_mbchar and _rl_find_next_mbchar: |
|||
* |
|||
* MB_FIND_ANY find any multibyte character |
|||
* MB_FIND_NONZERO find a non-zero-width multibyte character |
|||
*/ |
|||
|
|||
#define MB_FIND_ANY 0x00 |
|||
#define MB_FIND_NONZERO 0x01 |
|||
|
|||
extern int _rl_find_prev_mbchar PARAMS((char *, int, int)); |
|||
extern int _rl_find_next_mbchar PARAMS((char *, int, int, int)); |
|||
|
|||
#ifdef HANDLE_MULTIBYTE |
|||
|
|||
extern int _rl_compare_chars PARAMS((char *, int, mbstate_t *, char *, int, mbstate_t *)); |
|||
extern int _rl_get_char_len PARAMS((char *, mbstate_t *)); |
|||
extern int _rl_adjust_point PARAMS((char *, int, mbstate_t *)); |
|||
|
|||
extern int _rl_read_mbchar PARAMS((char *, int)); |
|||
extern int _rl_read_mbstring PARAMS((int, char *, int)); |
|||
|
|||
extern int _rl_is_mbchar_matched PARAMS((char *, int, int, char *, int)); |
|||
|
|||
#else /* !HANDLE_MULTIBYTE */ |
|||
|
|||
#undef MB_LEN_MAX |
|||
#undef MB_CUR_MAX |
|||
|
|||
#define MB_LEN_MAX 1 |
|||
#define MB_CUR_MAX 1 |
|||
|
|||
#define _rl_find_prev_mbchar(b, i, f) (((i) == 0) ? (i) : ((i) - 1)) |
|||
#define _rl_find_next_mbchar(b, i1, i2, f) ((i1) + (i2)) |
|||
|
|||
#endif /* !HANDLE_MULTIBYTE */ |
|||
|
|||
extern int rl_byte_oriented; |
|||
|
|||
#endif /* _RL_MBUTIL_H_ */ |
|||
@ -0,0 +1,88 @@ |
|||
/* rltypedefs.h -- Type declarations for readline functions. */ |
|||
|
|||
/* Copyright (C) 2000 Free Software Foundation, Inc.
|
|||
|
|||
This file is part of the GNU Readline Library, a library for |
|||
reading lines of text with interactive input and history editing. |
|||
|
|||
The GNU Readline Library is free software; you can redistribute it |
|||
and/or modify it under the terms of the GNU General Public License |
|||
as published by the Free Software Foundation; either version 2, or |
|||
(at your option) any later version. |
|||
|
|||
The GNU Readline Library is distributed in the hope that it will be |
|||
useful, but WITHOUT ANY WARRANTY; without even the implied warranty |
|||
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|||
GNU General Public License for more details. |
|||
|
|||
The GNU General Public License is often shipped with GNU software, and |
|||
is generally kept in a file called COPYING or LICENSE. If you do not |
|||
have a copy of the license, write to the Free Software Foundation, |
|||
59 Temple Place, Suite 330, Boston, MA 02111 USA. */ |
|||
|
|||
#ifndef _RL_TYPEDEFS_H_ |
|||
#define _RL_TYPEDEFS_H_ |
|||
|
|||
#ifdef __cplusplus |
|||
extern "C" { |
|||
#endif |
|||
|
|||
/* Old-style */ |
|||
|
|||
#if !defined (_FUNCTION_DEF) |
|||
# define _FUNCTION_DEF |
|||
|
|||
typedef int Function (); |
|||
typedef void VFunction (); |
|||
typedef char *CPFunction (); |
|||
typedef char **CPPFunction (); |
|||
|
|||
#endif /* _FUNCTION_DEF */ |
|||
|
|||
/* New style. */ |
|||
|
|||
#if !defined (_RL_FUNCTION_TYPEDEF) |
|||
# define _RL_FUNCTION_TYPEDEF |
|||
|
|||
/* Bindable functions */ |
|||
typedef int rl_command_func_t PARAMS((int, int)); |
|||
|
|||
/* Typedefs for the completion system */ |
|||
typedef char *rl_compentry_func_t PARAMS((const char *, int)); |
|||
typedef char **rl_completion_func_t PARAMS((const char *, int, int)); |
|||
|
|||
typedef char *rl_quote_func_t PARAMS((char *, int, char *)); |
|||
typedef char *rl_dequote_func_t PARAMS((char *, int)); |
|||
|
|||
typedef int rl_compignore_func_t PARAMS((char **)); |
|||
|
|||
typedef void rl_compdisp_func_t PARAMS((char **, int, int)); |
|||
|
|||
/* Type for input and pre-read hook functions like rl_event_hook */ |
|||
typedef int rl_hook_func_t PARAMS((void)); |
|||
|
|||
/* Input function type */ |
|||
typedef int rl_getc_func_t PARAMS((FILE *)); |
|||
|
|||
/* Generic function that takes a character buffer (which could be the readline
|
|||
line buffer) and an index into it (which could be rl_point) and returns |
|||
an int. */ |
|||
typedef int rl_linebuf_func_t PARAMS((char *, int)); |
|||
|
|||
/* `Generic' function pointer typedefs */ |
|||
typedef int rl_intfunc_t PARAMS((int)); |
|||
#define rl_ivoidfunc_t rl_hook_func_t |
|||
typedef int rl_icpfunc_t PARAMS((char *)); |
|||
typedef int rl_icppfunc_t PARAMS((char **)); |
|||
|
|||
typedef void rl_voidfunc_t PARAMS((void)); |
|||
typedef void rl_vintfunc_t PARAMS((int)); |
|||
typedef void rl_vcpfunc_t PARAMS((char *)); |
|||
typedef void rl_vcppfunc_t PARAMS((char **)); |
|||
#endif /* _RL_FUNCTION_TYPEDEF */ |
|||
|
|||
#ifdef __cplusplus |
|||
} |
|||
#endif |
|||
|
|||
#endif /* _RL_TYPEDEFS_H_ */ |
|||
@ -0,0 +1,236 @@ |
|||
/*
|
|||
* This is an implementation of wcwidth() and wcswidth() as defined in |
|||
* "The Single UNIX Specification, Version 2, The Open Group, 1997" |
|||
* <http://www.UNIX-systems.org/online.html>
|
|||
* |
|||
* Markus Kuhn -- 2001-09-08 -- public domain |
|||
*/ |
|||
|
|||
#include <wchar.h> |
|||
|
|||
struct interval { |
|||
unsigned short first; |
|||
unsigned short last; |
|||
}; |
|||
|
|||
/* auxiliary function for binary search in interval table */ |
|||
static int bisearch(wchar_t ucs, const struct interval *table, int max) { |
|||
int min = 0; |
|||
int mid; |
|||
|
|||
if (ucs < table[0].first || ucs > table[max].last) |
|||
return 0; |
|||
while (max >= min) { |
|||
mid = (min + max) / 2; |
|||
if (ucs > table[mid].last) |
|||
min = mid + 1; |
|||
else if (ucs < table[mid].first) |
|||
max = mid - 1; |
|||
else |
|||
return 1; |
|||
} |
|||
|
|||
return 0; |
|||
} |
|||
|
|||
|
|||
/* The following functions define the column width of an ISO 10646
|
|||
* character as follows: |
|||
* |
|||
* - The null character (U+0000) has a column width of 0. |
|||
* |
|||
* - Other C0/C1 control characters and DEL will lead to a return |
|||
* value of -1. |
|||
* |
|||
* - Non-spacing and enclosing combining characters (general |
|||
* category code Mn or Me in the Unicode database) have a |
|||
* column width of 0. |
|||
* |
|||
* - Other format characters (general category code Cf in the Unicode |
|||
* database) and ZERO WIDTH SPACE (U+200B) have a column width of 0. |
|||
* |
|||
* - Hangul Jamo medial vowels and final consonants (U+1160-U+11FF) |
|||
* have a column width of 0. |
|||
* |
|||
* - Spacing characters in the East Asian Wide (W) or East Asian |
|||
* FullWidth (F) category as defined in Unicode Technical |
|||
* Report #11 have a column width of 2. |
|||
* |
|||
* - All remaining characters (including all printable |
|||
* ISO 8859-1 and WGL4 characters, Unicode control characters, |
|||
* etc.) have a column width of 1. |
|||
* |
|||
* This implementation assumes that wchar_t characters are encoded |
|||
* in ISO 10646. |
|||
*/ |
|||
|
|||
int wcwidth(wchar_t ucs) |
|||
{ |
|||
/* sorted list of non-overlapping intervals of non-spacing characters */ |
|||
static const struct interval combining[] = { |
|||
{ 0x0300, 0x034E }, { 0x0360, 0x0362 }, { 0x0483, 0x0486 }, |
|||
{ 0x0488, 0x0489 }, { 0x0591, 0x05A1 }, { 0x05A3, 0x05B9 }, |
|||
{ 0x05BB, 0x05BD }, { 0x05BF, 0x05BF }, { 0x05C1, 0x05C2 }, |
|||
{ 0x05C4, 0x05C4 }, { 0x064B, 0x0655 }, { 0x0670, 0x0670 }, |
|||
{ 0x06D6, 0x06E4 }, { 0x06E7, 0x06E8 }, { 0x06EA, 0x06ED }, |
|||
{ 0x070F, 0x070F }, { 0x0711, 0x0711 }, { 0x0730, 0x074A }, |
|||
{ 0x07A6, 0x07B0 }, { 0x0901, 0x0902 }, { 0x093C, 0x093C }, |
|||
{ 0x0941, 0x0948 }, { 0x094D, 0x094D }, { 0x0951, 0x0954 }, |
|||
{ 0x0962, 0x0963 }, { 0x0981, 0x0981 }, { 0x09BC, 0x09BC }, |
|||
{ 0x09C1, 0x09C4 }, { 0x09CD, 0x09CD }, { 0x09E2, 0x09E3 }, |
|||
{ 0x0A02, 0x0A02 }, { 0x0A3C, 0x0A3C }, { 0x0A41, 0x0A42 }, |
|||
{ 0x0A47, 0x0A48 }, { 0x0A4B, 0x0A4D }, { 0x0A70, 0x0A71 }, |
|||
{ 0x0A81, 0x0A82 }, { 0x0ABC, 0x0ABC }, { 0x0AC1, 0x0AC5 }, |
|||
{ 0x0AC7, 0x0AC8 }, { 0x0ACD, 0x0ACD }, { 0x0B01, 0x0B01 }, |
|||
{ 0x0B3C, 0x0B3C }, { 0x0B3F, 0x0B3F }, { 0x0B41, 0x0B43 }, |
|||
{ 0x0B4D, 0x0B4D }, { 0x0B56, 0x0B56 }, { 0x0B82, 0x0B82 }, |
|||
{ 0x0BC0, 0x0BC0 }, { 0x0BCD, 0x0BCD }, { 0x0C3E, 0x0C40 }, |
|||
{ 0x0C46, 0x0C48 }, { 0x0C4A, 0x0C4D }, { 0x0C55, 0x0C56 }, |
|||
{ 0x0CBF, 0x0CBF }, { 0x0CC6, 0x0CC6 }, { 0x0CCC, 0x0CCD }, |
|||
{ 0x0D41, 0x0D43 }, { 0x0D4D, 0x0D4D }, { 0x0DCA, 0x0DCA }, |
|||
{ 0x0DD2, 0x0DD4 }, { 0x0DD6, 0x0DD6 }, { 0x0E31, 0x0E31 }, |
|||
{ 0x0E34, 0x0E3A }, { 0x0E47, 0x0E4E }, { 0x0EB1, 0x0EB1 }, |
|||
{ 0x0EB4, 0x0EB9 }, { 0x0EBB, 0x0EBC }, { 0x0EC8, 0x0ECD }, |
|||
{ 0x0F18, 0x0F19 }, { 0x0F35, 0x0F35 }, { 0x0F37, 0x0F37 }, |
|||
{ 0x0F39, 0x0F39 }, { 0x0F71, 0x0F7E }, { 0x0F80, 0x0F84 }, |
|||
{ 0x0F86, 0x0F87 }, { 0x0F90, 0x0F97 }, { 0x0F99, 0x0FBC }, |
|||
{ 0x0FC6, 0x0FC6 }, { 0x102D, 0x1030 }, { 0x1032, 0x1032 }, |
|||
{ 0x1036, 0x1037 }, { 0x1039, 0x1039 }, { 0x1058, 0x1059 }, |
|||
{ 0x1160, 0x11FF }, { 0x17B7, 0x17BD }, { 0x17C6, 0x17C6 }, |
|||
{ 0x17C9, 0x17D3 }, { 0x180B, 0x180E }, { 0x18A9, 0x18A9 }, |
|||
{ 0x200B, 0x200F }, { 0x202A, 0x202E }, { 0x206A, 0x206F }, |
|||
{ 0x20D0, 0x20E3 }, { 0x302A, 0x302F }, { 0x3099, 0x309A }, |
|||
{ 0xFB1E, 0xFB1E }, { 0xFE20, 0xFE23 }, { 0xFEFF, 0xFEFF }, |
|||
{ 0xFFF9, 0xFFFB } |
|||
}; |
|||
|
|||
/* test for 8-bit control characters */ |
|||
if (ucs == 0) |
|||
return 0; |
|||
if (ucs < 32 || (ucs >= 0x7f && ucs < 0xa0)) |
|||
return -1; |
|||
|
|||
/* binary search in table of non-spacing characters */ |
|||
if (bisearch(ucs, combining, |
|||
sizeof(combining) / sizeof(struct interval) - 1)) |
|||
return 0; |
|||
|
|||
/* if we arrive here, ucs is not a combining or C0/C1 control character */ |
|||
|
|||
return 1 + |
|||
(ucs >= 0x1100 && |
|||
(ucs <= 0x115f || /* Hangul Jamo init. consonants */ |
|||
(ucs >= 0x2e80 && ucs <= 0xa4cf && (ucs & ~0x0011) != 0x300a && |
|||
ucs != 0x303f) || /* CJK ... Yi */ |
|||
(ucs >= 0xac00 && ucs <= 0xd7a3) || /* Hangul Syllables */ |
|||
(ucs >= 0xf900 && ucs <= 0xfaff) || /* CJK Compatibility Ideographs */ |
|||
(ucs >= 0xfe30 && ucs <= 0xfe6f) || /* CJK Compatibility Forms */ |
|||
(ucs >= 0xff00 && ucs <= 0xff5f) || /* Fullwidth Forms */ |
|||
(ucs >= 0xffe0 && ucs <= 0xffe6) || |
|||
(ucs >= 0x20000 && ucs <= 0x2ffff))); |
|||
} |
|||
|
|||
|
|||
int wcswidth(const wchar_t *pwcs, size_t n) |
|||
{ |
|||
int w, width = 0; |
|||
|
|||
for (;*pwcs && n-- > 0; pwcs++) |
|||
if ((w = wcwidth(*pwcs)) < 0) |
|||
return -1; |
|||
else |
|||
width += w; |
|||
|
|||
return width; |
|||
} |
|||
|
|||
|
|||
/*
|
|||
* The following function is the same as wcwidth(), except that |
|||
* spacing characters in the East Asian Ambiguous (A) category as |
|||
* defined in Unicode Technical Report #11 have a column width of 2. |
|||
* This experimental variant might be useful for users of CJK legacy |
|||
* encodings who want to migrate to UCS. It is not otherwise |
|||
* recommended for general use. |
|||
*/ |
|||
static int wcwidth_cjk(wchar_t ucs) |
|||
{ |
|||
/* sorted list of non-overlapping intervals of East Asian Ambiguous
|
|||
* characters */ |
|||
static const struct interval ambiguous[] = { |
|||
{ 0x00A1, 0x00A1 }, { 0x00A4, 0x00A4 }, { 0x00A7, 0x00A8 }, |
|||
{ 0x00AA, 0x00AA }, { 0x00AD, 0x00AE }, { 0x00B0, 0x00B4 }, |
|||
{ 0x00B6, 0x00BA }, { 0x00BC, 0x00BF }, { 0x00C6, 0x00C6 }, |
|||
{ 0x00D0, 0x00D0 }, { 0x00D7, 0x00D8 }, { 0x00DE, 0x00E1 }, |
|||
{ 0x00E6, 0x00E6 }, { 0x00E8, 0x00EA }, { 0x00EC, 0x00ED }, |
|||
{ 0x00F0, 0x00F0 }, { 0x00F2, 0x00F3 }, { 0x00F7, 0x00FA }, |
|||
{ 0x00FC, 0x00FC }, { 0x00FE, 0x00FE }, { 0x0101, 0x0101 }, |
|||
{ 0x0111, 0x0111 }, { 0x0113, 0x0113 }, { 0x011B, 0x011B }, |
|||
{ 0x0126, 0x0127 }, { 0x012B, 0x012B }, { 0x0131, 0x0133 }, |
|||
{ 0x0138, 0x0138 }, { 0x013F, 0x0142 }, { 0x0144, 0x0144 }, |
|||
{ 0x0148, 0x014B }, { 0x014D, 0x014D }, { 0x0152, 0x0153 }, |
|||
{ 0x0166, 0x0167 }, { 0x016B, 0x016B }, { 0x01CE, 0x01CE }, |
|||
{ 0x01D0, 0x01D0 }, { 0x01D2, 0x01D2 }, { 0x01D4, 0x01D4 }, |
|||
{ 0x01D6, 0x01D6 }, { 0x01D8, 0x01D8 }, { 0x01DA, 0x01DA }, |
|||
{ 0x01DC, 0x01DC }, { 0x0251, 0x0251 }, { 0x0261, 0x0261 }, |
|||
{ 0x02C4, 0x02C4 }, { 0x02C7, 0x02C7 }, { 0x02C9, 0x02CB }, |
|||
{ 0x02CD, 0x02CD }, { 0x02D0, 0x02D0 }, { 0x02D8, 0x02DB }, |
|||
{ 0x02DD, 0x02DD }, { 0x02DF, 0x02DF }, { 0x0300, 0x034E }, |
|||
{ 0x0360, 0x0362 }, { 0x0391, 0x03A1 }, { 0x03A3, 0x03A9 }, |
|||
{ 0x03B1, 0x03C1 }, { 0x03C3, 0x03C9 }, { 0x0401, 0x0401 }, |
|||
{ 0x0410, 0x044F }, { 0x0451, 0x0451 }, { 0x2010, 0x2010 }, |
|||
{ 0x2013, 0x2016 }, { 0x2018, 0x2019 }, { 0x201C, 0x201D }, |
|||
{ 0x2020, 0x2022 }, { 0x2024, 0x2027 }, { 0x2030, 0x2030 }, |
|||
{ 0x2032, 0x2033 }, { 0x2035, 0x2035 }, { 0x203B, 0x203B }, |
|||
{ 0x203E, 0x203E }, { 0x2074, 0x2074 }, { 0x207F, 0x207F }, |
|||
{ 0x2081, 0x2084 }, { 0x20AC, 0x20AC }, { 0x2103, 0x2103 }, |
|||
{ 0x2105, 0x2105 }, { 0x2109, 0x2109 }, { 0x2113, 0x2113 }, |
|||
{ 0x2116, 0x2116 }, { 0x2121, 0x2122 }, { 0x2126, 0x2126 }, |
|||
{ 0x212B, 0x212B }, { 0x2153, 0x2155 }, { 0x215B, 0x215E }, |
|||
{ 0x2160, 0x216B }, { 0x2170, 0x2179 }, { 0x2190, 0x2199 }, |
|||
{ 0x21B8, 0x21B9 }, { 0x21D2, 0x21D2 }, { 0x21D4, 0x21D4 }, |
|||
{ 0x21E7, 0x21E7 }, { 0x2200, 0x2200 }, { 0x2202, 0x2203 }, |
|||
{ 0x2207, 0x2208 }, { 0x220B, 0x220B }, { 0x220F, 0x220F }, |
|||
{ 0x2211, 0x2211 }, { 0x2215, 0x2215 }, { 0x221A, 0x221A }, |
|||
{ 0x221D, 0x2220 }, { 0x2223, 0x2223 }, { 0x2225, 0x2225 }, |
|||
{ 0x2227, 0x222C }, { 0x222E, 0x222E }, { 0x2234, 0x2237 }, |
|||
{ 0x223C, 0x223D }, { 0x2248, 0x2248 }, { 0x224C, 0x224C }, |
|||
{ 0x2252, 0x2252 }, { 0x2260, 0x2261 }, { 0x2264, 0x2267 }, |
|||
{ 0x226A, 0x226B }, { 0x226E, 0x226F }, { 0x2282, 0x2283 }, |
|||
{ 0x2286, 0x2287 }, { 0x2295, 0x2295 }, { 0x2299, 0x2299 }, |
|||
{ 0x22A5, 0x22A5 }, { 0x22BF, 0x22BF }, { 0x2312, 0x2312 }, |
|||
{ 0x2329, 0x232A }, { 0x2460, 0x24BF }, { 0x24D0, 0x24E9 }, |
|||
{ 0x2500, 0x254B }, { 0x2550, 0x2574 }, { 0x2580, 0x258F }, |
|||
{ 0x2592, 0x2595 }, { 0x25A0, 0x25A1 }, { 0x25A3, 0x25A9 }, |
|||
{ 0x25B2, 0x25B3 }, { 0x25B6, 0x25B7 }, { 0x25BC, 0x25BD }, |
|||
{ 0x25C0, 0x25C1 }, { 0x25C6, 0x25C8 }, { 0x25CB, 0x25CB }, |
|||
{ 0x25CE, 0x25D1 }, { 0x25E2, 0x25E5 }, { 0x25EF, 0x25EF }, |
|||
{ 0x2605, 0x2606 }, { 0x2609, 0x2609 }, { 0x260E, 0x260F }, |
|||
{ 0x261C, 0x261C }, { 0x261E, 0x261E }, { 0x2640, 0x2640 }, |
|||
{ 0x2642, 0x2642 }, { 0x2660, 0x2661 }, { 0x2663, 0x2665 }, |
|||
{ 0x2667, 0x266A }, { 0x266C, 0x266D }, { 0x266F, 0x266F }, |
|||
{ 0x273D, 0x273D }, { 0x3008, 0x300B }, { 0x3014, 0x3015 }, |
|||
{ 0x3018, 0x301B }, { 0xFFFD, 0xFFFD } |
|||
}; |
|||
|
|||
/* binary search in table of non-spacing characters */ |
|||
if (bisearch(ucs, ambiguous, |
|||
sizeof(ambiguous) / sizeof(struct interval) - 1)) |
|||
return 2; |
|||
|
|||
return wcwidth(ucs); |
|||
} |
|||
|
|||
|
|||
int wcswidth_cjk(const wchar_t *pwcs, size_t n) |
|||
{ |
|||
int w, width = 0; |
|||
|
|||
for (;*pwcs && n-- > 0; pwcs++) |
|||
if ((w = wcwidth_cjk(*pwcs)) < 0) |
|||
return -1; |
|||
else |
|||
width += w; |
|||
|
|||
return width; |
|||
} |
|||
File diff suppressed because it is too large
Loading…
Reference in new issue