2 * Copyright (C) 2007 Andre Noll <maan@tuebingen.mpg.de>
4 * Licensed under the GPL v2. For licencing details see COPYING.
7 /** \file mm.c Paraslash's mood methods. */
20 /** The comparators for numeric mood methods (year, bitrate, ...). */
21 #define MOOD_COMPARATORS \
23 MC(LESS_OR_EQUAL, <=) \
29 MC(GREATER_OR_EQUAL, >=) \
31 /** Prefix mood comparator name with "_MC", example: MC_LESS. */
32 #define MC(a, b) MC_ ## a,
33 /** Each mood comparator is identified by an integer of this type. */
34 enum mood_comparator_id {MOOD_COMPARATORS NUM_MOOD_COMPARATORS};
36 /** Stringfied mood comparator, example: "<". */
38 /** Array of mood comparators represented as C strings ("<", "<=", ...). */
39 static const char *mood_comparators[] = {MOOD_COMPARATORS};
42 static int parse_mood_comparator(const char *word)
46 for (i = 0; i < NUM_MOOD_COMPARATORS; i++)
47 if (!strcmp(word, mood_comparators[i]))
49 return -E_MOOD_SYNTAX;
52 struct mm_compare_num_data {
53 /** <, <=, =, !=, >=, or >. */
54 enum mood_comparator_id id;
55 /** The value given at the mood line. */
59 static int mm_compare_num_score_function(int32_t val,
60 const struct mm_compare_num_data *cnd)
63 int32_t arg = cnd->arg;
67 res = val < arg; break;
68 case MC_LESS_OR_EQUAL:
69 res = val <= arg; break;
72 res = val == arg; break;
75 res = val != arg; break;
77 res = val > arg; break;
78 case MC_GREATER_OR_EQUAL:
79 res = val >= arg; break;
81 PARA_EMERG_LOG("BUG: invalid mood comparator\n");
84 return res? 100 : -100;
87 static int mm_compare_num_parser(int argc, char **argv, void **private)
90 enum mood_comparator_id id;
92 struct mm_compare_num_data *cnd;
94 return -E_MOOD_SYNTAX;
95 ret = parse_mood_comparator(argv[1]);
99 ret = para_atoi32(argv[2], &arg);
102 cnd = para_malloc(sizeof(struct mm_compare_num_data));
109 static int mm_regex_parser(int argc, char **argv, void **private)
115 return -E_MOOD_SYNTAX;
116 preg = para_malloc(sizeof(*preg));
117 ret = para_regcomp(preg, argv[1], REG_EXTENDED | REG_NOSUB);
126 static int mm_regex_score_function(const regex_t *preg, const char *pattern)
128 return regexec(preg, pattern, 0, NULL, 0) == 0? 100 : -100;
131 static void mm_regex_cleanup(void *private)
133 regex_t *preg = private;
138 static int mm_artist_matches_score_function(__a_unused const char *path,
139 __a_unused const struct afs_info *afsi,
140 const struct afh_info *afhi,
143 return mm_regex_score_function(private, afhi->tags.artist);
146 static int mm_title_matches_score_function(__a_unused const char *path,
147 __a_unused const struct afs_info *afsi,
148 const struct afh_info *afhi,
151 return mm_regex_score_function(private, afhi->tags.title);
154 static int mm_album_matches_score_function(__a_unused const char *path,
155 __a_unused const struct afs_info *afsi,
156 const struct afh_info *afhi,
159 return mm_regex_score_function(private, afhi->tags.album);
162 static int mm_comment_matches_score_function(__a_unused const char *path,
163 __a_unused const struct afs_info *afsi,
164 const struct afh_info *afhi,
167 return mm_regex_score_function(private, afhi->tags.comment);
170 static int mm_bitrate_score_function(__a_unused const char *path,
171 __a_unused const struct afs_info *afsi,
172 const struct afh_info *afhi,
175 return mm_compare_num_score_function(afhi->bitrate, private);
178 static int mm_frequency_score_function(__a_unused const char *path,
179 __a_unused const struct afs_info *afsi,
180 const struct afh_info *afhi,
183 return mm_compare_num_score_function(afhi->frequency, private);
186 static int mm_channels_score_function(__a_unused const char *path,
187 __a_unused const struct afs_info *afsi,
188 const struct afh_info *afhi,
191 return mm_compare_num_score_function(afhi->channels, private);
194 static int mm_image_id_score_function(__a_unused const char *path,
195 const struct afs_info *afsi,
196 __a_unused const struct afh_info *afhi,
199 return mm_compare_num_score_function(afsi->image_id, private);
202 static int mm_lyrics_id_score_function(__a_unused const char *path,
203 const struct afs_info *afsi,
204 __a_unused const struct afh_info *afhi,
207 return mm_compare_num_score_function(afsi->lyrics_id, private);
210 static int mm_num_played_score_function(__a_unused const char *path,
211 const struct afs_info *afsi,
212 __a_unused const struct afh_info *afhi,
215 return mm_compare_num_score_function(afsi->num_played, private);
218 struct mm_year_data {
219 /** Comparator and year given at the mood line. */
220 struct mm_compare_num_data *cnd;
221 /** Used to detect Y2K issues. */
222 int32_t current_year;
225 static int mm_year_parser(int argc, char **argv, void **private)
228 struct mm_year_data *mmyd = para_malloc(sizeof(*mmyd));
232 ret = mm_compare_num_parser(argc, argv, (void **)&mmyd->cnd);
235 current_time = time(NULL);
236 gmt = gmtime(¤t_time);
237 /* tm_year is the number of years since 1900 */
238 mmyd->current_year = gmt->tm_year + 1900;
246 static int mm_year_score_function(__a_unused const char *path,
247 __a_unused const struct afs_info *afsi,
248 const struct afh_info *afhi,
251 const struct mm_year_data *mmyd = private;
253 int ret = para_atoi32(afhi->tags.year, &tag_year);
255 if (ret < 0) /* year tag not present or not a number */
259 /* try to work around Y2K issues */
260 if (tag_year < 100) {
262 if (tag_year + 100 <= mmyd->current_year)
263 tag_year += 100; /* assume tag_year >= 2000 */
265 return mm_compare_num_score_function(tag_year, mmyd->cnd);
268 static void mm_year_cleanup(void *private)
270 struct mm_year_data *mmyd = private;
276 static int mm_no_attributes_set_parser(int argc, __a_unused char **argv,
277 __a_unused void **ignored)
279 return argc? -E_MOOD_SYNTAX : 1;
282 static int mm_no_attributes_set_score_function(__a_unused const char *path,
283 const struct afs_info *afsi,
284 __a_unused const struct afh_info *afhi,
285 __a_unused const void *data)
287 if (!afsi->attributes)
292 static int mm_path_matches_score_function(const char *path,
293 __a_unused const struct afs_info *afsi,
294 __a_unused const struct afh_info *afhi,
297 if (fnmatch(data, path, 0))
302 static int mm_path_matches_parser(int argc, char **argv, void **data)
305 return -E_MOOD_SYNTAX;
306 *data = para_strdup(argv[1]);
310 static void mm_path_matches_cleanup(void *data)
315 static int mm_is_set_parser(int argc, char **argv, void **bitnum)
318 unsigned char c, *res;
321 return -E_MOOD_SYNTAX;
322 ret = get_attribute_bitnum_by_name(argv[1], &c);
325 res = para_malloc(1);
331 static int mm_is_set_score_function(__a_unused const char *path,
332 __a_unused const struct afs_info *afsi,
333 __a_unused const struct afh_info *afhi,
336 const unsigned char *bn = data;
337 if (afsi->attributes & (1ULL << *bn))
342 #define DEFINE_MOOD_METHOD(_name) \
343 .parser = mm_ ## _name ## _parser, \
344 .score_function = mm_ ## _name ## _score_function, \
347 #define DEFINE_MOOD_METHOD_WITH_CLEANUP(_name) \
348 DEFINE_MOOD_METHOD(_name), \
349 .cleanup = mm_ ## _name ## _cleanup
351 #define DEFINE_REGEX_MOOD_METHOD(_name) \
353 .parser = mm_regex_parser, \
354 .score_function = mm_ ## _name ## _score_function, \
355 .cleanup = mm_regex_cleanup
357 #define DEFINE_COMPARE_NUM_MOOD_METHOD(_name) \
359 .parser = mm_compare_num_parser, \
360 .score_function = mm_ ## _name ## _score_function
362 const struct mood_method mood_methods[] = {
363 {DEFINE_MOOD_METHOD(no_attributes_set)},
364 {DEFINE_MOOD_METHOD(is_set)},
365 {DEFINE_MOOD_METHOD_WITH_CLEANUP(path_matches)},
366 {DEFINE_MOOD_METHOD_WITH_CLEANUP(year)},
367 {DEFINE_REGEX_MOOD_METHOD(artist_matches)},
368 {DEFINE_REGEX_MOOD_METHOD(title_matches)},
369 {DEFINE_REGEX_MOOD_METHOD(album_matches)},
370 {DEFINE_REGEX_MOOD_METHOD(comment_matches)},
371 {DEFINE_COMPARE_NUM_MOOD_METHOD(bitrate)},
372 {DEFINE_COMPARE_NUM_MOOD_METHOD(frequency)},
373 {DEFINE_COMPARE_NUM_MOOD_METHOD(channels)},
374 {DEFINE_COMPARE_NUM_MOOD_METHOD(num_played)},
375 {DEFINE_COMPARE_NUM_MOOD_METHOD(image_id)},
376 {DEFINE_COMPARE_NUM_MOOD_METHOD(lyrics_id)},