#include #include size_t strlen(const char* str) { size_t ret = 0; while (str[ret] != 0) ret++; return ret; } char *strchr(const char *str, char c) { do { if (*str == c) return (char*)str; } while (*(str++)); return NULL; } char *strrchr(const char *str, char c) { char* ret = NULL; do { if (*str == c) ret = (char*)str; } while (*(str++)); return ret; } char *strcpy(char *dest, const char *src) { memcpy(dest, src, strlen(src) + 1); return (char*)dest; } char *strncpy(char *dest, const char *src, size_t n) { size_t x = strlen(src); if (n < x) x = n; memcpy(dest, src, x); if (n > x) memset(dest + x, 0, n - x); return (char*)dest; } char *strcat(char *dest, const char *src) { char *dest2 = dest; dest2 += strlen(dest) - 1; while (*src) { *dest2 = *src; src++; dest2++; } *dest2 = 0; return dest; } int strcmp(const char *s1, const char *s2) { while ((*s1) && (*s1 == *s2)) { s1++; s2++; } return (*(unsigned char*)s1 - *(unsigned char*)s2); } int strncmp(const char *s1, const char *s2, size_t n) { size_t i = 0; while ((*s1) && (*s1 == *s2) && i != n) { s1++; s2++; i++; } if (i == n) return 0; return (*(unsigned char*)s1 - *(unsigned char*)s2); } void *memcpy(void *vd, const void *vs, size_t count) { uint8_t *dest = (uint8_t*)vd, *src = (uint8_t*)vs; size_t f = count % 4, n = count / 4, i; const uint32_t* s = (uint32_t*)src; uint32_t* d = (uint32_t*)dest; for (i = 0; i < n; i++) { d[i] = s[i]; } if (f != 0) { for (i = count - f; i < count; i++) { dest[i] = src[i]; } } return vd; } void *memmove(void *vd, const void *vs, size_t count) { uint8_t *dest = (uint8_t*)vd, *src = (uint8_t*)vs; if (vd < vs) { for (size_t i = 0; i < count; i++) dest[i] = src[i]; } else { for (size_t i = 0; i < count; i++) dest[count - i] = src[count - i]; } return vd; } int memcmp(const void *va, const void *vb, size_t count) { uint8_t *a = (uint8_t*)va; uint8_t *b = (uint8_t*)vb; for (size_t i = 0; i < count; i++) { if (a[i] != b[i]) return (int)a[i] - (int)b[i]; } return 0; } void *memset(void *dest, int val, size_t count) { uint8_t uval = (val & 0xFF); uint32_t wval = (uval<<24)|(uval<<16)|(uval<<8)|uval; uint32_t *dest_w = (uint32_t*)dest; for (size_t i = 0; i < count/4; i++) { dest_w[i] = wval; } uint8_t *dest_c = (uint8_t*)dest; for (size_t i = count - (count%4); i < count; i++) { dest_c[i] = uval; } return dest; } char *strdup(const char* str) { size_t len = strlen(str) + 1; char* ret = (char*)malloc(len); if (ret == 0) return 0; memcpy(ret, str, len); return ret; } char *strndup(const char* str, size_t count) { size_t len = strlen(str); if (count < len) len = count; char* ret = (char*)malloc(len + 1); if (ret == 0) return 0; memcpy(ret, str, len); ret[len] = 0; return ret; } /* vim: set ts=4 sw=4 tw=0 noet :*/