/*
- * Copyright (C) 2011 Andy Spencer <andy753421@gmail.com>
- *
- * 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 3 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, see <http://www.gnu.org/licenses/>.
+ * Copyright (c) 2011, Andy Spencer <andy753421@gmail.com>
+ *
+ * Permission to use, copy, modify, and/or distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
*/
#include <stdio.h>
return last ? head : node;
}
-list_t *list_remove(list_t *head, list_t *node)
+list_t *list_remove(list_t *head, list_t *node, int freedata)
{
list_t *next = node->next;
list_t *prev = node->prev;
if (next) next->prev = prev;
if (prev) prev->next = next;
+ if (freedata)
+ free(node->data);
free(node);
return head == node ? next : head;
}
return NULL;
}
+list_t *list_sort(list_t *list, int rev, int (*func)(void *a, void*b))
+{
+ if (list == NULL || list->next == NULL)
+ return list;
+
+ /* Split list */
+ list_t *sides[2] = {NULL, NULL};
+ for (int i = 0; list; i=(i+1)%2) {
+ list_t *head = list;
+ list = list->next;
+ head->next = sides[i];
+ sides[i] = head;
+ }
+
+ /* Sort sides */
+ sides[0] = list_sort(sides[0], !rev, func);
+ sides[1] = list_sort(sides[1], !rev, func);
+
+ /* Merge sides */
+ while (sides[0] || sides[1]) {
+ int i = sides[0] == NULL ? 1 :
+ sides[1] == NULL ? 0 :
+ func(sides[0]->data,
+ sides[1]->data) > 0 ? !!rev : !rev;
+ list_t *head = sides[i];
+ sides[i] = sides[i]->next;
+ head->next = list;
+ head->prev = NULL;
+ if (list)
+ list->prev = head;
+ list = head;
+ }
+ return list;
+}
+
/* Misc */
+int str2num(char *str, int def)
+{
+ char *end = NULL;
+ int num = strtol(str, &end, 10);
+ return end && *end == '\0' ? num : def;
+}
+
+int warn(char *fmt, ...)
+{
+ va_list ap;
+ va_start(ap, fmt);
+ fprintf(stderr, "Warning: ");
+ vfprintf(stderr, fmt, ap);
+ fprintf(stderr, "\n");
+ va_end(ap);
+ return 0;
+}
+
int error(char *fmt, ...)
{
va_list ap;