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authorJosé Fonseca <jrfonseca@tungstengraphics.com>2008-05-05 23:58:37 +0900
committerJosé Fonseca <jrfonseca@tungstengraphics.com>2008-05-05 23:58:37 +0900
commit131a1fbc91725c11e4822b82e58b94ec3a711476 (patch)
treef4fba0cff0126cd75d37bb002640635c6e5fcc1a /src/gallium
parenta3195e9d4eeb44032c0435f09b3e4a3dbf606777 (diff)
util: Alternative implementation for standard c library string functions.
Diffstat (limited to 'src/gallium')
-rw-r--r--src/gallium/auxiliary/util/u_string.h112
1 files changed, 112 insertions, 0 deletions
diff --git a/src/gallium/auxiliary/util/u_string.h b/src/gallium/auxiliary/util/u_string.h
index b99d4e8021..2fede229d9 100644
--- a/src/gallium/auxiliary/util/u_string.h
+++ b/src/gallium/auxiliary/util/u_string.h
@@ -41,6 +41,8 @@
#include <stddef.h>
#include <stdarg.h>
+#include "pipe/p_compiler.h"
+
#ifdef __cplusplus
extern "C" {
@@ -48,11 +50,121 @@ extern "C" {
#ifdef WIN32
+
int util_vsnprintf(char *, size_t, const char *, va_list);
int util_snprintf(char *str, size_t size, const char *format, ...);
+
+static INLINE void
+util_sprintf(char *str, const char *format, ...)
+{
+ va_list ap;
+ va_start(ap, format);
+ util_vsnprintf(str, (size_t)-1, format, ap);
+ va_end(ap);
+}
+
+static INLINE char *
+util_strchr(const char *s, char c)
+{
+ while(*s) {
+ if(*s == c)
+ return (char *)s;
+ ++s;
+ }
+ return NULL;
+}
+
+static INLINE char*
+util_strncat(char *dst, const char *src, size_t n)
+{
+ char *p = dst + strlen(dst);
+ const char *q = src;
+ size_t i;
+
+ for (i = 0; i < n && *q != '\0'; ++i)
+ *p++ = *q++;
+ *p = '\0';
+
+ return dst;
+}
+
+static INLINE int
+util_strcmp(const char *s1, const char *s2)
+{
+ unsigned char u1, u2;
+
+ while (1) {
+ u1 = (unsigned char) *s1++;
+ u2 = (unsigned char) *s2++;
+ if (u1 != u2)
+ return u1 - u2;
+ if (u1 == '\0')
+ return 0;
+ }
+ return 0;
+}
+
+static INLINE int
+util_strncmp(const char *s1, const char *s2, size_t n)
+{
+ unsigned char u1, u2;
+
+ while (n-- > 0) {
+ u1 = (unsigned char) *s1++;
+ u2 = (unsigned char) *s2++;
+ if (u1 != u2)
+ return u1 - u2;
+ if (u1 == '\0')
+ return 0;
+ }
+ return 0;
+}
+
+static INLINE char *
+util_strstr(const char *haystack, const char *needle)
+{
+ const char *p = haystack;
+ int len = strlen(needle);
+
+ for (; (p = util_strchr(p, *needle)) != 0; p++) {
+ if (util_strncmp(p, needle, len) == 0) {
+ return (char *)p;
+ }
+ }
+ return NULL;
+}
+
+static INLINE void *
+util_memmove(void *dest, const void *src, size_t n)
+{
+ char *p = (char *)dest;
+ const char *q = (const char *)src;
+ if (dest < src) {
+ while (n--)
+ *p++ = *q++;
+ }
+ else
+ {
+ p += n;
+ q += n;
+ while (n--)
+ *--p = *--q;
+ }
+ return dest;
+}
+
+
#else
+
#define util_vsnprintf vsnprintf
#define util_snprintf snprintf
+#define util_strchr strchr
+#define util_strcmp strcmp
+#define util_strncmp strncmp
+#define util_strncat strncat
+#define util_strstr strstr
+#define util_memmove memmove
+
#endif