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/** String functions that don't fit into any of the other .c files */
#include <bits/panic.h>
#include <ctype.h>
#include <errno.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
char *strncat(char *restrict dst, const char *restrict src, size_t n) {
(void)dst; (void)src; (void)n;
__libc_panic("unimplemented");
}
char *stpncpy(char *restrict dst, const char *restrict src, size_t n) {
(void)dst; (void)src; (void)n;
__libc_panic("unimplemented");
}
char *strdup(const char *s) {
size_t len = strlen(s) + 1;
char *buf = malloc(len);
if (buf) memcpy(buf, s, len);
return buf;
}
char *strsignal(int sig) {
static char buf[32];
snprintf(buf, sizeof(buf), "signal %d", sig);
return buf;
}
/* strings.h */
int strcasecmp(const char *s1, const char *s2) {
return strncasecmp(s1, s2, ~0);
}
int strncasecmp(const char *s1, const char *s2, size_t n) {
for (size_t i = 0; i < n; i++) {
char c1 = tolower(s1[i]), c2 = tolower(s2[i]);
if (c1 == '\0' || c1 != c2) {
if (c1 < c2) return -1;
else if (c1 > c2) return 1;
else return 0;
}
}
return 0;
}
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