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- --[[
- Parse CUE files
-
- $Id$
- Copyright (C) 2009 Laurent Aimar
-
- 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., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
- --]]
-
- -- Probe function.
- function probe()
- if( not string.match( string.upper( vlc.path ), ".CUE$" ) ) then
- return false
- end
- header = vlc.peek( 2048 )
- return string.match( header, "FILE.*WAVE%s[\r\n]+" ) or
- string.match( header, "FILE.*AIFF%s[\r\n]+" ) or
- string.match( header, "FILE.*MP3%s[\r\n]+" )
- end
-
- -- Helpers
- function cue_string( src )
- local sub = string.match( src, "^\"(.*)\".*$" );
- if( sub ) then
- return sub
- end
- return string.match( src, "^(%S+).*$" )
- end
-
- function cue_path( src )
- if( string.match( src, "^/" ) or
- string.match( src, "^\\" ) or
- string.match( src, "^[%l%u]:\\" ) ) then
- return src
- end
-
- local path = string.gsub( vlc.path, '\\', '/' )
- local slash = string.find( string.reverse( path ), '/' )
- if( path == nil ) then
- return src
- end
- return string.sub( path, 1, -slash-1 ) .. '/' .. src
- end
-
- function cue_track( global, track )
- if( track.index01 == nil ) then
- return nil
- end
-
- t = {}
- t.path = cue_path( track.file or global.file )
- t.title = track.title
- t.album = global.title
- t.artist = track.performer or global.performer
- t.genre = track.genre or global.genre
- t.date = track.date or global.date
- t.tracknum = track.num
- t.options = { ":start-time=" .. math.floor(track.index01) }
-
- return t
- end
-
- function cue_append( tracks, global, track )
- local t = cue_track( global, track )
- if( t ~= nil ) then
- if( #tracks > 0 ) then
- local prev = tracks[#tracks]
- table.insert( prev.options, ":stop-time=" .. math.floor(track.index01) )
- end
- table.insert( tracks, t )
- end
- end
-
- -- Parse function.
- function parse()
- p = {}
- global_data = nil
- data = {}
- file = nil
-
- while true
- do
- line = vlc.readline()
- if not line then break end
-
- cmd, arg = string.match( line, "^%s*(%S+)%s*(.*)$" )
-
- if( cmd == "REM" and arg ) then
- subcmd, value = string.match( arg, "^(%S+)%s*(.*)$" )
- if( subcmd == "GENRE" and value ) then
- data.genre = cue_string( value )
- elseif( subcmd == "DATE" and value ) then
- data.date = cue_string( value )
- end
- elseif( cmd == "PERFORMER" and arg ) then
- data.performer = cue_string( arg )
- elseif( cmd == "TITLE" and arg ) then
- data.title = cue_string( arg )
- elseif( cmd == "FILE" ) then
- file = cue_string( arg )
- elseif( cmd == "TRACK" ) then
- if( not global_data ) then
- global_data = data
- else
- cue_append( p, global_data, data )
- end
- data = { file = file, num = string.match( arg, "^(%d+)" ) }
- elseif( cmd == "INDEX" ) then
- local idx, m, s, f = string.match( arg, "(%d+)%s+(%d+):(%d+):(%d+)" )
- if( idx == "01" and m ~= nil and s ~= nil and f ~= nil ) then
- data.index01 = m * 60 + s + f / 75
- end
- end
- end
-
- cue_append( p, global_data, data )
-
- return p
- end
-
-