src/kernel --> src/

src/net/lwip/string.h

@@ -0,0 +1,78 @@
+#ifndef LWIP_STRING_H
+#define LWIP_STRING_H
+
+#include "kutils.h"
+
+#define memcpy k_memcpy
+#define memset k_memset
+#define strlen k_strlen
+#define strcmp k_strcmp
+#define strcpy k_strcpy
+
+static inline int memcmp(const void *s1, const void *s2, size_t n) {
+    const unsigned char *p1 = (const unsigned char *)s1;
+    const unsigned char *p2 = (const unsigned char *)s2;
+    while (n--) {
+        if (*p1 != *p2) return (int)*p1 - (int)*p2;
+        p1++; p2++;
+    }
+    return 0;
+}
+
+static inline void *memmove(void *dest, const void *src, size_t n) {
+    unsigned char *d = (unsigned char *)dest;
+    const unsigned char *s = (const unsigned char *)src;
+    if (d < s) {
+        while (n--) *d++ = *s++;
+    } else {
+        d += n;
+        s += n;
+        while (n--) *--d = *--s;
+    }
+    return dest;
+}
+
+static inline char *strchr(const char *s, int c) {
+    while (*s) {
+        if (*s == (char)c) return (char *)s;
+        s++;
+    }
+    if (c == 0) return (char *)s;
+    return (void*)0;
+}
+
+static inline int strncmp(const char *s1, const char *s2, size_t n) {
+    while (n && *s1 && (*s1 == *s2)) {
+        s1++;
+        s2++;
+        n--;
+    }
+    if (n == 0) return 0;
+    return (int)*(const unsigned char *)s1 - (int)*(const unsigned char *)s2;
+}
+
+static inline char *strncpy(char *dest, const char *src, size_t n) {
+    size_t i;
+    for (i = 0; i < n && src[i] != '\0'; i++)
+        dest[i] = src[i];
+    for ( ; i < n; i++)
+        dest[i] = '\0';
+    return dest;
+}
+
+static inline char *strstr(const char *haystack, const char *needle) {
+    if (!*needle) return (char *)haystack;
+    for (; *haystack; haystack++) {
+        if (*haystack == *needle) {
+            const char *h = haystack;
+            const char *n = needle;
+            while (*h && *n && *h == *n) {
+                h++; n++;
+            }
+            if (!*n) return (char *)haystack;
+        }
+    }
+    return (void*)0;
+}
+
+#endif