69 lines
1.3 KiB
C
69 lines
1.3 KiB
C
#include "songvec.h"
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#include "utils.h"
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/* Only used for sorting/searchin a songvec, not general purpose compares */
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static int songvec_cmp(const void *s1, const void *s2)
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{
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const Song *a = ((const Song * const *)s1)[0];
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const Song *b = ((const Song * const *)s2)[0];
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return strcmp(a->url, b->url);
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}
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static size_t sv_size(struct songvec *sv)
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{
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return sv->nr * sizeof(Song *);
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}
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void songvec_sort(struct songvec *sv)
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{
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qsort(sv->base, sv->nr, sizeof(Song *), songvec_cmp);
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}
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Song *songvec_find(struct songvec *sv, const char *url)
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{
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int i;
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for (i = sv->nr; --i >= 0; )
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if (!strcmp(sv->base[i]->url, url))
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return sv->base[i];
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return NULL;
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}
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int songvec_delete(struct songvec *sv, const Song *del)
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{
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int i;
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for (i = sv->nr; --i >= 0; ) {
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if (sv->base[i] != del)
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continue;
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/* we _don't_ call freeSong() here */
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if (!--sv->nr) {
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free(sv->base);
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sv->base = NULL;
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} else {
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memmove(&sv->base[i], &sv->base[i + 1],
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(sv->nr - i + 1) * sizeof(Song *));
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sv->base = xrealloc(sv->base, sv_size(sv));
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}
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return i;
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}
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return -1; /* not found */
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}
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void songvec_add(struct songvec *sv, Song *add)
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{
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++sv->nr;
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sv->base = xrealloc(sv->base, sv_size(sv));
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sv->base[sv->nr - 1] = add;
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}
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void songvec_destroy(struct songvec *sv)
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{
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if (sv->base) {
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free(sv->base);
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sv->base = NULL;
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}
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sv->nr = 0;
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}
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