blob: dbb29a18dc2cbbadfc9e7c84e1102fcae084bc81 [file] [log] [blame]
/* Slooow, but small string operations, so that we don't have
to link libc5/glibc in.
Originally from linux/lib/string.c, which is
Copyright (C) 1991, 1992 Linus Torvalds
*/
#include <stringops.h>
char * strncpy(char *dest, const char *src, size_t count)
{
char *tmp = dest;
while (count-- && (*dest++ = *src++) != '\0')
/* nothing */;
return tmp;
}
char *strcat(char *dest, const char *src)
{
char *tmp = dest;
while (*dest) dest++;
while ((*dest++ = *src++) != '\0');
return tmp;
}
char *strncat(char *dest, const char *src, size_t n)
{
char *tmp = dest;
while (*dest) dest++;
while (n && (*dest++ = *src++) != '\0') n--;
if (!n) *dest = 0;
return tmp;
}
char * strrchr(const char * s, int c)
{
const char *p = s + strlen(s);
do {
if (*p == (char)c)
return (char *)p;
} while (--p >= s);
return 0;
}
char *strdup(const char *str)
{
extern void *malloc(int);
char *ret;
ret = malloc(strlen(str) + 1);
strcpy(ret, str);
return ret;
}
__inline__ int tolower(int c)
{
if (c >= 'A' && c <= 'Z') return c - 'A' + 'a';
return c;
}
int strcasecmp(const char *cs,const char *ct)
{
register signed char __res;
while (1)
if ((__res = tolower(*cs) - tolower(*ct++)) != 0 || !*cs++)
break;
return __res;
}
int strncasecmp(const char *cs,const char *ct,size_t n)
{
register signed char __res = 0;
while (n--)
if ((__res = tolower(*cs) - tolower(*ct++)) != 0 || !*cs++)
break;
return __res;
}
char * strstr(const char * s1,const char * s2)
{
int l1, l2;
l2 = strlen(s2);
if (!l2)
return (char *) s1;
l1 = strlen(s1);
while (l1 >= l2) {
l1--;
if (!memcmp(s1,s2,l2))
return (char *) s1;
s1++;
}
return 0;
}