/* the Music Player Daemon (MPD) * (c)2007 by Warren Dukes (warren.dukes@gmail.com) * This project's homepage is: http://www.musicpd.org * * 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ #include "locate.h" #include "path.h" #include "tag.h" #include "song.h" #include <glib.h> #include <stdlib.h> #define LOCATE_TAG_FILE_KEY "file" #define LOCATE_TAG_FILE_KEY_OLD "filename" #define LOCATE_TAG_ANY_KEY "any" int locate_parse_type(const char *str) { int i; if (0 == strcasecmp(str, LOCATE_TAG_FILE_KEY) || 0 == strcasecmp(str, LOCATE_TAG_FILE_KEY_OLD)) return LOCATE_TAG_FILE_TYPE; if (0 == strcasecmp(str, LOCATE_TAG_ANY_KEY)) return LOCATE_TAG_ANY_TYPE; for (i = 0; i < TAG_NUM_OF_ITEM_TYPES; i++) if (0 == strcasecmp(str, tag_item_names[i])) return i; return -1; } static bool locate_item_init(struct locate_item *item, const char *type_string, const char *needle) { item->tag = locate_parse_type(type_string); if (item->tag < 0) return false; item->needle = g_strdup(needle); return true; } struct locate_item * locate_item_new(const char *type_string, const char *needle) { struct locate_item *ret = g_new(struct locate_item, 1); if (!locate_item_init(ret, type_string, needle)) { g_free(ret); ret = NULL; } return ret; } void locate_item_list_free(struct locate_item_list *list) { for (unsigned i = 0; i < list->length; ++i) g_free(list->items[i].needle); g_free(list); } struct locate_item_list * locate_item_list_new(unsigned length) { struct locate_item_list *list; list = g_malloc0(sizeof(*list) - sizeof(list->items[0]) + length * sizeof(list->items[0])); list->length = length; return list; } struct locate_item_list * locate_item_list_parse(char *argv[], int argc) { struct locate_item_list *list; if (argc % 2 != 0) return NULL; list = locate_item_list_new(argc / 2); for (unsigned i = 0; i < list->length; ++i) { if (!locate_item_init(&list->items[i], argv[i * 2], argv[i * 2 + 1])) { locate_item_list_free(list); return NULL; } } return list; } struct locate_item_list * locate_item_list_casefold(const struct locate_item_list *list) { struct locate_item_list *new_list = locate_item_list_new(list->length); for (unsigned i = 0; i < list->length; i++){ new_list->items[i].needle = g_utf8_casefold(list->items[i].needle, -1); new_list->items[i].tag = list->items[i].tag; } return new_list; } void locate_item_free(struct locate_item *item) { g_free(item->needle); g_free(item); } static bool locate_tag_search(const struct song *song, enum tag_type type, const char *str) { char *duplicate; bool ret = false; bool visited_types[TAG_NUM_OF_ITEM_TYPES]; if (type == LOCATE_TAG_FILE_TYPE || type == LOCATE_TAG_ANY_TYPE) { char *uri, *p; uri = song_get_uri(song); p = g_utf8_casefold(uri, -1); g_free(uri); if (strstr(p, str)) ret = true; g_free(p); if (ret == 1 || type == LOCATE_TAG_FILE_TYPE) return ret; } if (!song->tag) return false; memset(visited_types, 0, sizeof(visited_types)); for (unsigned i = 0; i < song->tag->num_items && !ret; i++) { visited_types[song->tag->items[i]->type] = true; if (type != LOCATE_TAG_ANY_TYPE && song->tag->items[i]->type != type) { continue; } duplicate = g_utf8_casefold(song->tag->items[i]->value, -1); if (*str && strstr(duplicate, str)) ret = true; g_free(duplicate); } /** If the search critieron was not visited during the sweep * through the song's tag, it means this field is absent from * the tag or empty. Thus, if the searched string is also * empty (first char is a \0), then it's a match as well and * we should return true. */ if (!*str && !visited_types[type]) return true; return ret; } bool locate_song_search(const struct song *song, const struct locate_item_list *criteria) { for (unsigned i = 0; i < criteria->length; i++) if (!locate_tag_search(song, criteria->items[i].tag, criteria->items[i].needle)) return false; return true; } static bool locate_tag_match(const struct song *song, enum tag_type type, const char *str) { bool visited_types[TAG_NUM_OF_ITEM_TYPES]; if (type == LOCATE_TAG_FILE_TYPE || type == LOCATE_TAG_ANY_TYPE) { char *uri = song_get_uri(song); bool matches = strcmp(str, uri) == 0; g_free(uri); if (matches) return true; if (type == LOCATE_TAG_FILE_TYPE) return false; } if (!song->tag) return false; memset(visited_types, 0, sizeof(visited_types)); for (unsigned i = 0; i < song->tag->num_items; i++) { visited_types[song->tag->items[i]->type] = true; if (type != LOCATE_TAG_ANY_TYPE && song->tag->items[i]->type != type) { continue; } if (0 == strcmp(str, song->tag->items[i]->value)) return true; } /** If the search critieron was not visited during the sweep * through the song's tag, it means this field is absent from * the tag or empty. Thus, if the searched string is also * empty (first char is a \0), then it's a match as well and * we should return true. */ if (!*str && !visited_types[type]) return true; return false; } bool locate_song_match(const struct song *song, const struct locate_item_list *criteria) { for (unsigned i = 0; i < criteria->length; i++) if (!locate_tag_match(song, criteria->items[i].tag, criteria->items[i].needle)) return false; return true; }