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15.1.1
by Fabio M. Di Nitto
Import upstream version 1.4.13a+git20070930 |
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/* Slooow, but small string operations, so that we don't have
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to link libc5/glibc in.
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Originally from linux/lib/string.c, which is
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Copyright (C) 1991, 1992 Linus Torvalds
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*/
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#include <stringops.h> |
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char * strncpy(char *dest, const char *src, size_t count) |
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{
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char *tmp = dest; |
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while (count-- && (*dest++ = *src++) != '\0') |
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/* nothing */; |
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return tmp; |
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}
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char *strcat(char *dest, const char *src) |
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{
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char *tmp = dest; |
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while (*dest) dest++; |
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while ((*dest++ = *src++) != '\0'); |
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return tmp; |
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}
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char *strncat(char *dest, const char *src, size_t n) |
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{
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char *tmp = dest; |
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while (*dest) dest++; |
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while (n && (*dest++ = *src++) != '\0') n--; |
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if (!n) *dest = 0; |
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return tmp; |
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}
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char * strrchr(const char * s, int c) |
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{
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const char *p = s + strlen(s); |
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do { |
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if (*p == (char)c) |
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return (char *)p; |
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} while (--p >= s); |
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return 0; |
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}
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char *strdup(const char *str) |
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{
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extern void *malloc(int); |
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char *ret; |
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ret = malloc(strlen(str) + 1); |
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strcpy(ret, str); |
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return ret; |
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}
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__inline__ int tolower(int c) |
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{
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if (c >= 'A' && c <= 'Z') return c - 'A' + 'a'; |
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return c; |
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}
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int strcasecmp(const char *cs,const char *ct) |
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{
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register signed char __res; |
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while (1) |
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if ((__res = tolower(*cs) - tolower(*ct++)) != 0 || !*cs++) |
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break; |
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return __res; |
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}
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int strncasecmp(const char *cs,const char *ct,size_t n) |
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{
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register signed char __res = 0; |
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while (n--) |
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if ((__res = tolower(*cs) - tolower(*ct++)) != 0 || !*cs++) |
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break; |
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return __res; |
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}
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char * strstr(const char * s1,const char * s2) |
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{
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int l1, l2; |
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l2 = strlen(s2); |
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if (!l2) |
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return (char *) s1; |
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l1 = strlen(s1); |
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while (l1 >= l2) { |
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l1--; |
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if (!memcmp(s1,s2,l2)) |
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return (char *) s1; |
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s1++; |
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}
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return 0; |
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}
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