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--[[
Parse CUE files
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( vlc.path, "%.[cC][uU][eE]$" ) ) then
return false
end
header = vlc.peek( 2048 )
return string.match( header, "FILE.*WAVE%s*[\r\n]+" ) or
string.match( header, "FILE.*AIFF%s*[\r\n]+" ) or
string.match( header, "FILE.*MP3%s*[\r\n]+" )
end
-- Helpers
function is_utf8( src )
return vlc.strings.from_charset( "UTF-8", src ) == src
end
function cue_string( src )
if not is_utf8( src ) then
-- Convert to UTF-8 since it's probably Latin1
src = vlc.strings.from_charset( "ISO_8859-1", src )
end
local sub = string.match( src, "^\"(.*)\".*$" );
if( sub ) then
return sub
end
return string.match( src, "^(%S+).*$" )
end
function cue_path( src )
if( string.match( src, "^/" ) or
string.match( src, "^\\" ) or
string.match( src, "^[%l%u]:\\" ) ) then
return vlc.strings.make_uri(src)
end
local slash = string.find( string.reverse( vlc.path ), '/' )
local prefix = vlc.access .. "://" .. string.sub( vlc.path, 1, -slash )
-- FIXME: postfix may not be encoded correctly (esp. slashes)
local postfix = vlc.strings.encode_uri_component(src)
return prefix .. postfix
end
function cue_track( global, track )
if( track.index01 == nil ) then
return nil
end
t = {}
t.path = cue_path( track.file or global.file )
t.title = track.title
t.album = global.title
t.artist = track.performer or global.performer
t.genre = track.genre or global.genre
t.date = track.date or global.date
t.description = global.comment
t.tracknum = track.num
t.options = { ":start-time=" .. track.index01}
return t
end
function cue_append( tracks, global, track )
local t = cue_track( global, track )
if( t ~= nil ) then
if( #tracks > 0 ) then
local prev = tracks[#tracks]
table.insert( prev.options, ":stop-time=" .. track.index01)
end
table.insert( tracks, t )
end
end
-- Parse function.
function parse()
p = {}
global_data = nil
data = {}
file = nil
while true
do
line = vlc.readline()
if not line then break end
cmd, arg = string.match( line, "^%s*(%S+)%s*(.*)$" )
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 )
elseif( subcmd == "COMMENT" and value ) then
data.comment = 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
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