--- /dev/null
+/*
+ * Various simple utilities for ffmpeg system
+ * Copyright (c) 2000, 2001, 2002 Fabrice Bellard
+ *
+ * This library 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 of the License, or (at your option) any later version.
+ *
+ * This library 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 this library; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+#include "avformat.h"
+
+#if !defined(CONFIG_NOCUTILS)
+/**
+ * Return TRUE if val is a prefix of str. If it returns TRUE, ptr is
+ * set to the next character in 'str' after the prefix.
+ *
+ * @param str input string
+ * @param val prefix to test
+ * @param ptr updated after the prefix in str in there is a match
+ * @return TRUE if there is a match
+ */
+int strstart(const char *str, const char *val, const char **ptr)
+{
+ const char *p, *q;
+ p = str;
+ q = val;
+ while (*q != '\0') {
+ if (*p != *q)
+ return 0;
+ p++;
+ q++;
+ }
+ if (ptr)
+ *ptr = p;
+ return 1;
+}
+
+/**
+ * Return TRUE if val is a prefix of str (case independent). If it
+ * returns TRUE, ptr is set to the next character in 'str' after the
+ * prefix.
+ *
+ * @param str input string
+ * @param val prefix to test
+ * @param ptr updated after the prefix in str in there is a match
+ * @return TRUE if there is a match */
+int stristart(const char *str, const char *val, const char **ptr)
+{
+ const char *p, *q;
+ p = str;
+ q = val;
+ while (*q != '\0') {
+ if (toupper(*(const unsigned char *)p) != toupper(*(const unsigned char *)q))
+ return 0;
+ p++;
+ q++;
+ }
+ if (ptr)
+ *ptr = p;
+ return 1;
+}
+
+/**
+ * Copy the string str to buf. If str length is bigger than buf_size -
+ * 1 then it is clamped to buf_size - 1.
+ * NOTE: this function does what strncpy should have done to be
+ * useful. NEVER use strncpy.
+ *
+ * @param buf destination buffer
+ * @param buf_size size of destination buffer
+ * @param str source string
+ */
+void pstrcpy(char *buf, int buf_size, const char *str)
+{
+ int c;
+ char *q = buf;
+
+ if (buf_size <= 0)
+ return;
+
+ for(;;) {
+ c = *str++;
+ if (c == 0 || q >= buf + buf_size - 1)
+ break;
+ *q++ = c;
+ }
+ *q = '\0';
+}
+
+/* strcat and truncate. */
+char *pstrcat(char *buf, int buf_size, const char *s)
+{
+ int len;
+ len = strlen(buf);
+ if (len < buf_size)
+ pstrcpy(buf + len, buf_size - len, s);
+ return buf;
+}
+
+#endif
+
+/* add one element to a dynamic array */
+void __dynarray_add(unsigned long **tab_ptr, int *nb_ptr, unsigned long elem)
+{
+ int nb, nb_alloc;
+ unsigned long *tab;
+
+ nb = *nb_ptr;
+ tab = *tab_ptr;
+ if ((nb & (nb - 1)) == 0) {
+ if (nb == 0)
+ nb_alloc = 1;
+ else
+ nb_alloc = nb * 2;
+ tab = av_realloc(tab, nb_alloc * sizeof(unsigned long));
+ *tab_ptr = tab;
+ }
+ tab[nb++] = elem;
+ *nb_ptr = nb;
+}
+
+time_t mktimegm(struct tm *tm)
+{
+ time_t t;
+
+ int y = tm->tm_year + 1900, m = tm->tm_mon + 1, d = tm->tm_mday;
+
+ if (m < 3) {
+ m += 12;
+ y--;
+ }
+
+ t = 86400 *
+ (d + (153 * m - 457) / 5 + 365 * y + y / 4 - y / 100 + y / 400 - 719469);
+
+ t += 3600 * tm->tm_hour + 60 * tm->tm_min + tm->tm_sec;
+
+ return t;
+}
+
+/* get a positive number between n_min and n_max, for a maximum length
+ of len_max. Return -1 if error. */
+static int date_get_num(const char **pp,
+ int n_min, int n_max, int len_max)
+{
+ int i, val, c;
+ const char *p;
+
+ p = *pp;
+ val = 0;
+ for(i = 0; i < len_max; i++) {
+ c = *p;
+ if (!isdigit(c))
+ break;
+ val = (val * 10) + c - '0';
+ p++;
+ }
+ /* no number read ? */
+ if (p == *pp)
+ return -1;
+ if (val < n_min || val > n_max)
+ return -1;
+ *pp = p;
+ return val;
+}
+
+/* small strptime for ffmpeg */
+const char *small_strptime(const char *p, const char *fmt,
+ struct tm *dt)
+{
+ int c, val;
+
+ for(;;) {
+ c = *fmt++;
+ if (c == '\0') {
+ return p;
+ } else if (c == '%') {
+ c = *fmt++;
+ switch(c) {
+ case 'H':
+ val = date_get_num(&p, 0, 23, 2);
+ if (val == -1)
+ return NULL;
+ dt->tm_hour = val;
+ break;
+ case 'M':
+ val = date_get_num(&p, 0, 59, 2);
+ if (val == -1)
+ return NULL;
+ dt->tm_min = val;
+ break;
+ case 'S':
+ val = date_get_num(&p, 0, 59, 2);
+ if (val == -1)
+ return NULL;
+ dt->tm_sec = val;
+ break;
+ case 'Y':
+ val = date_get_num(&p, 0, 9999, 4);
+ if (val == -1)
+ return NULL;
+ dt->tm_year = val - 1900;
+ break;
+ case 'm':
+ val = date_get_num(&p, 1, 12, 2);
+ if (val == -1)
+ return NULL;
+ dt->tm_mon = val - 1;
+ break;
+ case 'd':
+ val = date_get_num(&p, 1, 31, 2);
+ if (val == -1)
+ return NULL;
+ dt->tm_mday = val;
+ break;
+ case '%':
+ goto match;
+ default:
+ return NULL;
+ }
+ } else {
+ match:
+ if (c != *p)
+ return NULL;
+ p++;
+ }
+ }
+ return p;
+}
+