0aee49bdf8
This updates the copyright header to all be the same, which is pretty much an update of where to mail request for a copy of the GPL and the years of the MPD project. This also puts all committers under 'The Music Player Project' umbrella. These entries should go individually in the AUTHORS file, for consistancy.
153 lines
3.4 KiB
C
153 lines
3.4 KiB
C
/*
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* Copyright (C) 2003-2009 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#include "dirvec.h"
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#include "directory.h"
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#include <glib.h>
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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static GMutex *nr_lock = NULL;
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static size_t dv_size(const struct dirvec *dv)
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{
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return dv->nr * sizeof(struct directory *);
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}
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/* Only used for sorting/searching a dirvec, not general purpose compares */
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static int dirvec_cmp(const void *d1, const void *d2)
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{
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const struct directory *a = ((const struct directory * const *)d1)[0];
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const struct directory *b = ((const struct directory * const *)d2)[0];
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return g_utf8_collate(a->path, b->path);
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}
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void dirvec_init(void)
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{
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g_assert(nr_lock == NULL);
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nr_lock = g_mutex_new();
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}
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void dirvec_deinit(void)
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{
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g_assert(nr_lock != NULL);
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g_mutex_free(nr_lock);
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nr_lock = NULL;
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}
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void dirvec_sort(struct dirvec *dv)
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{
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g_mutex_lock(nr_lock);
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qsort(dv->base, dv->nr, sizeof(struct directory *), dirvec_cmp);
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g_mutex_unlock(nr_lock);
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}
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struct directory *dirvec_find(const struct dirvec *dv, const char *path)
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{
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char *base;
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int i;
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struct directory *ret = NULL;
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base = g_path_get_basename(path);
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g_mutex_lock(nr_lock);
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for (i = dv->nr; --i >= 0; )
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if (!strcmp(directory_get_name(dv->base[i]), base)) {
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ret = dv->base[i];
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break;
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}
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g_mutex_unlock(nr_lock);
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g_free(base);
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return ret;
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}
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int dirvec_delete(struct dirvec *dv, struct directory *del)
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{
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size_t i;
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g_mutex_lock(nr_lock);
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for (i = 0; i < dv->nr; ++i) {
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if (dv->base[i] != del)
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continue;
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/* we _don't_ call directory_free() here */
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if (!--dv->nr) {
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g_mutex_unlock(nr_lock);
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g_free(dv->base);
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dv->base = NULL;
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return i;
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} else {
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memmove(&dv->base[i], &dv->base[i + 1],
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(dv->nr - i) * sizeof(struct directory *));
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dv->base = g_realloc(dv->base, dv_size(dv));
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}
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break;
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}
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g_mutex_unlock(nr_lock);
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return i;
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}
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void dirvec_add(struct dirvec *dv, struct directory *add)
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{
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g_mutex_lock(nr_lock);
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++dv->nr;
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dv->base = g_realloc(dv->base, dv_size(dv));
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dv->base[dv->nr - 1] = add;
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g_mutex_unlock(nr_lock);
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}
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void dirvec_destroy(struct dirvec *dv)
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{
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g_mutex_lock(nr_lock);
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dv->nr = 0;
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g_mutex_unlock(nr_lock);
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if (dv->base) {
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g_free(dv->base);
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dv->base = NULL;
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}
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}
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int dirvec_for_each(const struct dirvec *dv,
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int (*fn)(struct directory *, void *), void *arg)
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{
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size_t i;
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size_t prev_nr;
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g_mutex_lock(nr_lock);
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for (i = 0; i < dv->nr; ) {
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struct directory *dir = dv->base[i];
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assert(dir);
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prev_nr = dv->nr;
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g_mutex_unlock(nr_lock);
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if (fn(dir, arg) < 0)
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return -1;
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g_mutex_lock(nr_lock); /* dv->nr may change in fn() */
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if (prev_nr == dv->nr)
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++i;
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}
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g_mutex_unlock(nr_lock);
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return 0;
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}
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