1 /*****************************************************************************
3 *****************************************************************************
4 * Copyright (C) 2003 VideoLAN
5 * $Id: subtitles.c,v 1.1 2003/09/22 03:40:06 hartman Exp $
7 * Authors: Derk-Jan Hartman <hartman at videolan.org>
8 * This is adapted code from the GPL'ed MPlayer (http://mplayerhq.hu)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
23 *****************************************************************************/
27 #include <vlc/input.h>
34 #define DIRECTORY_SEPARATOR '\\'
36 #define DIRECTORY_SEPARATOR '/'
39 #define MAX_SUBTITLE_FILES 128
42 static void strcpy_trim( char *d, char *s )
44 /* skip leading whitespace */
45 while( *s && !isalnum(*s) )
52 while( *s && isalnum(*s) )
58 /* trim excess whitespace */
59 while( *s && !isalnum(*s) )
69 static void strcpy_strip_ext( char *d, char *s )
71 char *tmp = strrchr(s, '.');
78 strncpy(d, s, tmp - s);
88 static void strcpy_get_ext( char *d, char *s )
90 char *tmp = strrchr(s, '.');
95 } else strcpy( d, tmp + 1 );
98 static int whiteonly( char *s )
102 if( isalnum( *s ) ) return 0;
108 typedef struct _subfn
114 static int compare_sub_priority( const void *a, const void *b )
116 if (((subfn*)a)->priority > ((subfn*)b)->priority) {
118 } else if (((subfn*)a)->priority < ((subfn*)b)->priority) {
121 return strcoll(((subfn*)a)->psz_fname, ((subfn*)b)->psz_fname);
125 /*****************************************************************************
126 * subtitles_Detect: Use the original filename to find a subtitle files.
127 *****************************************************************************/
128 char** subtitles_Detect( input_thread_t *p_input, char *psz_path, char *psz_fname )
130 /* variables to be used for derivatives of psz_fname */
131 char *f_dir, *f_fname, *f_fname_noext, *f_fname_trim, *tmp;
132 /* variables to be used for derivatives FILE *f */
133 char *tmp_fname_noext, *tmp_fname_trim, *tmp_fname_ext, *tmpresult;
135 int len, i, j, i_sub_count, i_sub_match_fuzziness;
136 subfn *result; /* unsorted results */
137 char **result2; /* sorted results */
143 char * sub_exts[] = { "utf", "utf8", "utf-8", "sub", "srt", "smi", "txt", "ssa", NULL};
144 /* extensions from unsupported types */
145 /* rt, aqt, jss, js, ass */
148 len = ( strlen( psz_fname ) > 256 ? strlen( psz_fname ) : 256 ) +
149 ( strlen( psz_path ) > 256 ? strlen( psz_path ) : 256 ) + 2;
151 f_dir = (char*)malloc(len);
152 f_fname = (char*)malloc(len);
153 f_fname_noext = (char*)malloc(len);
154 f_fname_trim = (char*)malloc(len);
156 tmp_fname_noext = (char*)malloc(len);
157 tmp_fname_trim = (char*)malloc(len);
158 tmp_fname_ext = (char*)malloc(len);
160 tmpresult = (char*)malloc(len);
162 result = (subfn*)malloc( sizeof(subfn) * MAX_SUBTITLE_FILES );
163 memset( result, 0, sizeof(subfn) * MAX_SUBTITLE_FILES );
165 /* extract filename & dirname from psz_fname */
166 tmp = strrchr( psz_fname, DIRECTORY_SEPARATOR );
170 strcpy( f_fname, tmp + 1 );
171 pos = tmp - psz_fname;
172 strncpy( f_dir, psz_fname, pos + 1 );
177 strcpy( f_fname, psz_fname );
181 strcpy_strip_ext( f_fname_noext, f_fname );
182 strcpy_trim( f_fname_trim, f_fname_noext );
184 i_sub_match_fuzziness = 3;
186 * 1 = any subtitle file
187 * 2 = any sub file containing movie name
188 * 3 = sub file matching movie name exactly
189 * 4 = sub file matching movie name with additional chars
191 for( j = 0; j <= 1; j++)
193 d = opendir( j == 0 ? f_dir : psz_path );
197 while( de = readdir( d ) )
199 /* retrieve various parts of the filename */
200 strcpy_strip_ext( tmp_fname_noext, de->d_name );
201 strcpy_get_ext( tmp_fname_ext, de->d_name );
202 strcpy_trim( tmp_fname_trim, tmp_fname_noext );
204 /* does it end with a subtitle extension? */
206 for( i = 0; sub_exts[i]; i++ )
208 if( strcmp(sub_exts[i], tmp_fname_ext ) == 0 )
211 msg_Dbg( p_input, "found subtitle: %s", de->d_name );
216 /* we have a (likely) subtitle file */
220 if( !i_prio && strcmp( tmp_fname_trim, f_fname_trim ) == 0 )
222 /* matches the movie name exactly */
225 if( !i_prio && ( tmp = strstr( tmp_fname_trim, f_fname_trim ) ) )
227 /* contains the movie name */
228 tmp += strlen( f_fname_trim );
229 if( whiteonly( tmp ) )
231 /* chars in front of the movie name */
236 /* chars after (and possibly in front of) the movie name */
242 /* doesn't contain the movie name */
243 if( j == 0 ) i_prio = 1;
246 if( i_prio >= i_sub_match_fuzziness )
248 sprintf( tmpresult, "%s%s", j == 0 ? f_dir : psz_path, de->d_name );
249 msg_Dbg( p_input, "autodetected subtitle: %s with priority %d", de->d_name, i_prio );
250 if( f = fopen( tmpresult, "rt" ) )
253 result[i_sub_count].priority = i_prio;
254 result[i_sub_count].psz_fname = strdup( tmpresult );
260 if( i_sub_count >= MAX_SUBTITLE_FILES ) break;
268 free( f_fname_noext );
269 free( f_fname_trim );
271 free( tmp_fname_noext );
272 free( tmp_fname_trim );
273 free( tmp_fname_ext );
277 qsort( result, i_sub_count, sizeof( subfn ), compare_sub_priority );
279 result2 = (char**)malloc( sizeof(char*) * ( i_sub_count + 1 ) );
280 memset( result2, 0, sizeof(char*) * ( i_sub_count + 1 ) );
282 for( i = 0; i < i_sub_count; i++ )
284 result2[i] = result[i].psz_fname;
286 result2[i_sub_count] = NULL;