isom: Add X-Com Radvision FourCC

[ffmpeg] / libavutil / avstring.c

diff --git a/libavutil/avstring.c b/libavutil/avstring.c
index a16adcb3fe210b253902806a76ace12efaa81ffb..eb5c95a01c78f03af47aad39befc39f3e2640454 100644 (file)
--- a/libavutil/avstring.c
+++ b/libavutil/avstring.c
@@ -23,7 +23,6 @@
 #include <stdint.h>
 #include <stdio.h>
 #include <string.h>
-#include <ctype.h>
 
 #include "config.h"
 #include "common.h"
@@ -43,7 +42,7 @@ int av_strstart(const char *str, const char *pfx, const char **ptr)
 
 int av_stristart(const char *str, const char *pfx, const char **ptr)
 {
-    while (*pfx && toupper((unsigned)*pfx) == toupper((unsigned)*str)) {
+    while (*pfx && av_toupper((unsigned)*pfx) == av_toupper((unsigned)*str)) {
         pfx++;
         str++;
     }
@@ -65,6 +64,20 @@ char *av_stristr(const char *s1, const char *s2)
     return NULL;
 }
 
+char *av_strnstr(const char *haystack, const char *needle, size_t hay_length)
+{
+    size_t needle_len = strlen(needle);
+    if (!needle_len)
+        return haystack;
+    while (hay_length >= needle_len) {
+        hay_length--;
+        if (!memcmp(haystack, needle, needle_len))
+            return haystack;
+        haystack++;
+    }
+    return NULL;
+}
+
 size_t av_strlcpy(char *dst, const char *src, size_t size)
 {
     size_t len = 0;
@@ -199,6 +212,48 @@ const char *av_dirname(char *path)
     return path;
 }
 
+int av_isdigit(int c)
+{
+    return c >= '0' && c <= '9';
+}
+
+int av_isgraph(int c)
+{
+    return c > 32 && c < 127;
+}
+
+int av_isspace(int c)
+{
+    return c == ' ' || c == '\f' || c == '\n' || c == '\r' || c == '\t' ||
+           c == '\v';
+}
+
+int av_isxdigit(int c)
+{
+    c = av_tolower(c);
+    return av_isdigit(c) || (c >= 'a' && c <= 'f');
+}
+
+int av_match_name(const char *name, const char *names)
+{
+    const char *p;
+    int len, namelen;
+
+    if (!name || !names)
+        return 0;
+
+    namelen = strlen(name);
+    while ((p = strchr(names, ','))) {
+        len = FFMAX(p - names, namelen);
+        if (!av_strncasecmp(name, names, len))
+            return 1;
+        names = p + 1;
+    }
+    return !av_strcasecmp(name, names);
+}
+
+
+
 #ifdef TEST
 
 int main(void)
@@ -235,7 +290,8 @@ int main(void)
 
     printf("Testing av_get_token()\n");
     for (i = 0; i < FF_ARRAY_ELEMS(strings); i++) {
-        const char *p = strings[i], *q;
+        const char *p = strings[i];
+        char *q;
         printf("|%s|", p);
         q = av_get_token(&p, ":");
         printf(" -> |%s|", q);