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🎥 Command line media player
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137/* * This file is part of mpv. * * mpv is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * mpv 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 Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with mpv. If not, see <http://www.gnu.org/licenses/>. */
#include <stddef.h>#include <limits.h>#include <strings.h>#include <assert.h>#include <libavutil/dict.h>#include "tags.h"#include "misc/bstr.h"
void mp_tags_set_str(struct mp_tags *tags, const char *key, const char *value){ mp_tags_set_bstr(tags, bstr0(key), bstr0(value));}
void mp_tags_set_bstr(struct mp_tags *tags, bstr key, bstr value){ for (int n = 0; n < tags->num_keys; n++) { if (bstrcasecmp0(key, tags->keys[n]) == 0) { talloc_free(tags->values[n]); tags->values[n] = bstrto0(tags, value); return; } }
MP_RESIZE_ARRAY(tags, tags->keys, tags->num_keys + 1); MP_RESIZE_ARRAY(tags, tags->values, tags->num_keys + 1); tags->keys[tags->num_keys] = bstrto0(tags, key); tags->values[tags->num_keys] = bstrto0(tags, value); tags->num_keys++;}
void mp_tags_remove_str(struct mp_tags *tags, const char *key){ mp_tags_remove_bstr(tags, bstr0(key));}
void mp_tags_remove_bstr(struct mp_tags *tags, bstr key){ for (int n = 0; n < tags->num_keys; n++) { if (bstrcasecmp0(key, tags->keys[n]) == 0) { talloc_free(tags->keys[n]); talloc_free(tags->values[n]); int num_keys = tags->num_keys; // copy so it's only decremented once MP_TARRAY_REMOVE_AT(tags->keys, num_keys, n); MP_TARRAY_REMOVE_AT(tags->values, tags->num_keys, n); } }}
char *mp_tags_get_str(struct mp_tags *tags, const char *key){ return mp_tags_get_bstr(tags, bstr0(key));}
char *mp_tags_get_bstr(struct mp_tags *tags, bstr key){ for (int n = 0; n < tags->num_keys; n++) { if (bstrcasecmp0(key, tags->keys[n]) == 0) return tags->values[n]; } return NULL;}
void mp_tags_clear(struct mp_tags *tags){ *tags = (struct mp_tags){0}; talloc_free_children(tags);}
struct mp_tags *mp_tags_dup(void *tparent, struct mp_tags *tags){ struct mp_tags *new = talloc_zero(tparent, struct mp_tags); MP_RESIZE_ARRAY(new, new->keys, tags->num_keys); MP_RESIZE_ARRAY(new, new->values, tags->num_keys); new->num_keys = tags->num_keys; for (int n = 0; n < tags->num_keys; n++) { new->keys[n] = talloc_strdup(new, tags->keys[n]); new->values[n] = talloc_strdup(new, tags->values[n]); } return new;}
// Return a copy of the tags, but containing only keys in list. Also forces// the order and casing of the keys (for cosmetic reasons).// A trailing '*' matches the rest.struct mp_tags *mp_tags_filtered(void *tparent, struct mp_tags *tags, char **list){ struct mp_tags *new = talloc_zero(tparent, struct mp_tags); for (int n = 0; list && list[n]; n++) { char *key = list[n]; size_t keylen = strlen(key); if (keylen >= INT_MAX) continue; bool prefix = keylen && key[keylen - 1] == '*'; int matchlen = prefix ? keylen - 1 : keylen + 1; for (int x = 0; x < tags->num_keys; x++) { if (strncasecmp(tags->keys[x], key, matchlen) == 0) { char skey[320]; snprintf(skey, sizeof(skey), "%.*s%s", matchlen, key, prefix ? tags->keys[x] + keylen - 1 : ""); mp_tags_set_str(new, skey, tags->values[x]); } } } return new;}
void mp_tags_merge(struct mp_tags *tags, struct mp_tags *src){ for (int n = 0; n < src->num_keys; n++) mp_tags_set_str(tags, src->keys[n], src->values[n]);}
void mp_tags_copy_from_av_dictionary(struct mp_tags *tags, struct AVDictionary *av_dict){ AVDictionaryEntry *entry = NULL; while ((entry = av_dict_get(av_dict, "", entry, AV_DICT_IGNORE_SUFFIX))) mp_tags_set_str(tags, entry->key, entry->value);}