imported sources
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Svend Sorensen
277
lib/cue_parse.y
Normal file
277
lib/cue_parse.y
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%{
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/*
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* cue_parse.y -- parser for cue files
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*
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* Copyright (C) 2004 Svend Sorensen <sorensen@freeshell.org>
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* For license terms, see the file COPYING in this distribution.
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "cd.h"
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#include "time.h"
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#define YYDEBUG 1
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extern int cue_yylex();
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void yyerror (char *s);
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static Cd *cd = NULL;
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static Track *track = NULL;
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static Track *prev_track = NULL;
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static Cdtext *cdtext = NULL;
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static char *prev_filename = NULL; /* last file in or before last track */
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static char *cur_filename = NULL; /* last file in the last track */
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static char *new_filename = NULL; /* last file in this track */
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%}
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%start cuefile
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%union {
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long ival;
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char *sval;
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}
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%token <ival> NUMBER
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%token <sval> STRING
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/* global (header) */
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%token CATALOG
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%token FFILE
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%token BINARY
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%token MOTOROLA
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%token AIFF
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%token WAVE
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%token MP3
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/* track */
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%token TRACK
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%token <ival> AUDIO
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%token <ival> MODE1_2048
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%token <ival> MODE1_2352
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%token <ival> MODE2_2336
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%token <ival> MODE2_2048
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%token <ival> MODE2_2342
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%token <ival> MODE2_2332
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%token <ival> MODE2_2352
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/* ISRC is with CD_TEXT */
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%token TRACK_ISRC
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%token FLAGS
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%token <ival> PRE
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%token <ival> DCP
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%token <ival> FOUR_CH
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%token <ival> SCMS
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%token PREGAP
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%token INDEX
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%token POSTGAP
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/* CD-TEXT */
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%token <ival> TITLE
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%token <ival> PERFORMER
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%token <ival> SONGWRITER
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%token <ival> COMPOSER
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%token <ival> ARRANGER
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%token <ival> MESSAGE
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%token <ival> DISC_ID
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%token <ival> GENRE
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%token <ival> TOC_INFO1
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%token <ival> TOC_INFO2
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%token <ival> UPC_EAN
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%token <ival> ISRC
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%token <ival> SIZE_INFO
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%type <ival> track_mode
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%type <ival> track_flag
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%type <ival> time
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%type <ival> cdtext_item
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%%
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cuefile
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: new_cd global_statements track_list
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;
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new_cd
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: /* empty */ {
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cd = cd_init();
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cdtext = cd_get_cdtext(cd);
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}
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;
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global_statements
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: /* empty */
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| global_statements global_statement
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;
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global_statement
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: CATALOG STRING '\n' { cd_set_catalog(cd, $2); }
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| cdtext
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| track_data
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| error '\n'
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;
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track_data
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: FFILE STRING file_format '\n' {
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if (NULL != new_filename) {
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yyerror("too many files specified\n");
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free(new_filename);
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}
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new_filename = strdup($2);
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}
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;
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track_list
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: track
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| track_list track
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;
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track
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: new_track track_def track_statements
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;
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file_format
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: BINARY
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| MOTOROLA
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| AIFF
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| WAVE
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| MP3
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;
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new_track
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: /*empty */ {
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/* save previous track, to later set length */
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prev_track = track;
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track = cd_add_track(cd);
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cdtext = track_get_cdtext(track);
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cur_filename = new_filename;
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if (NULL != cur_filename)
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prev_filename = cur_filename;
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if (NULL == prev_filename)
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yyerror("no file specified for track");
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else
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track_set_filename(track, prev_filename);
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new_filename = NULL;
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}
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;
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track_def
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: TRACK NUMBER track_mode '\n' {
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track_set_mode(track, $3);
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}
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;
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track_mode
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: AUDIO
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| MODE1_2048
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| MODE1_2352
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| MODE2_2336
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| MODE2_2048
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| MODE2_2342
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| MODE2_2332
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| MODE2_2352
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;
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track_statements
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: track_statement
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| track_statements track_statement
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;
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track_statement
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: cdtext
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| FLAGS track_flags '\n'
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| TRACK_ISRC STRING '\n' { track_set_isrc(track, $2); }
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| PREGAP time '\n' { track_set_zero_pre(track, $2); }
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| INDEX NUMBER time '\n' {
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int i = track_get_nindex(track);
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long prev_length;
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if (0 == i) {
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/* first index */
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track_set_start(track, $3);
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if (NULL != prev_track && NULL == cur_filename) {
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/* track shares file with previous track */
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prev_length = $3 - track_get_start(prev_track);
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track_set_length(prev_track, prev_length);
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}
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}
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for (; i <= $2; i++)
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track_add_index(track, \
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track_get_zero_pre(track) + $3 \
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- track_get_start(track));
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}
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| POSTGAP time '\n' { track_set_zero_post(track, $2); }
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| track_data
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| error '\n'
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;
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track_flags
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: /* empty */
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| track_flags track_flag { track_set_flag(track, $2); }
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;
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track_flag
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: PRE
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| DCP
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| FOUR_CH
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| SCMS
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;
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cdtext
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: cdtext_item STRING '\n' { cdtext_set ($1, $2, cdtext); }
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;
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cdtext_item
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: TITLE
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| PERFORMER
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| SONGWRITER
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| COMPOSER
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| ARRANGER
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| MESSAGE
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| DISC_ID
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| GENRE
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| TOC_INFO1
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| TOC_INFO2
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| UPC_EAN
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| ISRC
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| SIZE_INFO
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;
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time
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: NUMBER
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| NUMBER ':' NUMBER ':' NUMBER { $$ = time_msf_to_frame($1, $3, $5); }
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;
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%%
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/* lexer interface */
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extern int cue_lineno;
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extern int cue_yydebug;
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extern FILE *cue_yyin;
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void yyerror (char *s)
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{
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fprintf(stderr, "%d: %s\n", cue_lineno, s);
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}
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Cd *cue_parse (FILE *fp)
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{
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cue_yyin = fp;
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cue_yydebug = 0;
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if (0 == cue_yyparse())
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return cd;
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return NULL;
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}
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