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141 lines
4.3 KiB
141 lines
4.3 KiB
--[[
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Parse CUE files
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Copyright (C) 2009 Laurent Aimar
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
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--]]
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-- Probe function.
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function probe()
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if( not string.match( vlc.path, "%.[cC][uU][eE]$" ) ) then
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return false
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end
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header = vlc.peek( 2048 )
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return string.match( header, "FILE.*WAVE%s*[\r\n]+" ) or
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string.match( header, "FILE.*AIFF%s*[\r\n]+" ) or
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string.match( header, "FILE.*MP3%s*[\r\n]+" )
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end
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-- Helpers
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function is_utf8( src )
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return vlc.strings.from_charset( "UTF-8", src ) == src
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end
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function cue_string( src )
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if not is_utf8( src ) then
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-- Convert to UTF-8 since it's probably Latin1
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src = vlc.strings.from_charset( "ISO_8859-1", src )
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end
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local sub = string.match( src, "^\"(.*)\".*$" );
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if( sub ) then
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return sub
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end
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return string.match( src, "^(%S+).*$" )
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end
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function cue_path( src )
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if( string.match( src, "^/" ) or
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string.match( src, "^\\" ) or
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string.match( src, "^[%l%u]:\\" ) ) then
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return vlc.strings.make_uri(src)
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end
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local slash = string.find( string.reverse( vlc.path ), '/' )
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local prefix = vlc.access .. "://" .. string.sub( vlc.path, 1, -slash )
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-- FIXME: postfix may not be encoded correctly (esp. slashes)
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local postfix = vlc.strings.encode_uri_component(src)
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return prefix .. postfix
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end
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function cue_track( global, track )
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if( track.index01 == nil ) then
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return nil
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end
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t = {}
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t.path = cue_path( track.file or global.file )
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t.title = track.title
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t.album = global.title
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t.artist = track.performer or global.performer
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t.genre = track.genre or global.genre
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t.date = track.date or global.date
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t.description = global.comment
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t.tracknum = track.num
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t.options = { ":start-time=" .. track.index01}
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return t
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end
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function cue_append( tracks, global, track )
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local t = cue_track( global, track )
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if( t ~= nil ) then
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if( #tracks > 0 ) then
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local prev = tracks[#tracks]
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table.insert( prev.options, ":stop-time=" .. track.index01)
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end
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table.insert( tracks, t )
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end
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end
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-- Parse function.
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function parse()
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p = {}
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global_data = nil
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data = {}
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file = nil
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while true
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do
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line = vlc.readline()
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if not line then break end
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cmd, arg = string.match( line, "^%s*(%S+)%s*(.*)$" )
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if( cmd == "REM" and arg ) then
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subcmd, value = string.match( arg, "^(%S+)%s*(.*)$" )
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if( subcmd == "GENRE" and value ) then
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data.genre = cue_string( value )
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elseif( subcmd == "DATE" and value ) then
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data.date = cue_string( value )
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elseif( subcmd == "COMMENT" and value ) then
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data.comment = cue_string( value )
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end
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elseif( cmd == "PERFORMER" and arg ) then
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data.performer = cue_string( arg )
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elseif( cmd == "TITLE" and arg ) then
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data.title = cue_string( arg )
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elseif( cmd == "FILE" ) then
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file = cue_string( arg )
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elseif( cmd == "TRACK" ) then
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if( not global_data ) then
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global_data = data
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else
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cue_append( p, global_data, data )
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end
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data = { file = file, num = string.match( arg, "^(%d+)" ) }
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elseif( cmd == "INDEX" ) then
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local idx, m, s, f = string.match( arg, "(%d+)%s+(%d+):(%d+):(%d+)" )
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if( idx == "01" and m ~= nil and s ~= nil and f ~= nil ) then
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data.index01 = m * 60 + s + f / 75
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end
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end
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end
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cue_append( p, global_data, data )
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return p
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end
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