/* See LICENSE file for copyright and license details. */
#include "libsimple.h"
#ifndef TEST
char *
libsimple_strncmove(char *d, const char *s, int c_, size_t n)
{
char c = (char)c_, *p, *end = &d[n];
if (d <= s) {
do {
if (!n--)
break;
if ((*d++ = *s) == c) {
if (n)
*d = '\0';
return d;
}
} while (*s++);
} else {
for (p = *(char **)(void *)&s; n; n--, p++) {
if (*p == c || !*p) {
n = (size_t)(p - s);
p = &d[n];
for (;; n--) {
d[n] = s[n];
if (!n)
break;
}
if (&p[1] != end && *p)
p[1] = '\0';
return *p == c ? &p[1] : NULL;
}
}
for (n = (size_t)(p - s); n;) {
n--;
d[n] = s[n];
}
}
return NULL;
}
#else
#include "test.h"
int
main(void)
{
char buf[1024];
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], '\0', 1024) == &buf[5 + 6]);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'o', 1024) == &buf[5 + 5]);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'l', 1024) == &buf[5 + 3]);
assert(!strcmp(buf, "-----hel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'x', 1024) == NULL);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], '\0', 1024) == &buf[3 + 6]);
assert(!strcmp(buf, "---hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'o', 1024) == &buf[3 + 5]);
assert(!strcmp(buf, "---hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'l', 1024) == &buf[3 + 3]);
assert(!strcmp(buf, "---hel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'x', 1024) == NULL);
assert(!strcmp(buf, "---hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], '\0', 1024) == &buf[8 + 6]);
assert(!strcmp(buf, "-----helhello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'o', 1024) == &buf[8 + 5]);
assert(!strcmp(buf, "-----helhello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'l', 1024) == &buf[8 + 3]);
assert(!strcmp(buf, "-----helhel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'x', 1024) == NULL);
assert(!strcmp(buf, "-----helhello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], '\0', 6) == &buf[5 + 6]);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'o', 6) == &buf[5 + 5]);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'l', 6) == &buf[5 + 3]);
assert(!strcmp(buf, "-----hel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'x', 6) == NULL);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], '\0', 6) == &buf[3 + 6]);
assert(!strcmp(buf, "---hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'o', 6) == &buf[3 + 5]);
assert(!strcmp(buf, "---hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'l', 6) == &buf[3 + 3]);
assert(!strcmp(buf, "---hel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'x', 6) == NULL);
assert(!strcmp(buf, "---hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], '\0', 6) == &buf[8 + 6]);
assert(!strcmp(buf, "-----helhello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'o', 6) == &buf[8 + 5]);
assert(!strcmp(buf, "-----helhello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'l', 6) == &buf[8 + 3]);
assert(!strcmp(buf, "-----helhel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'x', 6) == NULL);
assert(!strcmp(buf, "-----helhello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
stpcpy(&buf[5], "hello")[0] = '-';
assert(libsimple_strncmove(&buf[5], &buf[5], '\0', 5) == NULL);
assert(!strncmp(buf, "-----hello-", 11));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
stpcpy(&buf[5], "hello")[0] = '-';
assert(libsimple_strncmove(&buf[5], &buf[5], 'o', 5) == &buf[5 + 5]);
assert(!strncmp(buf, "-----hello-", 11));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
stpcpy(&buf[5], "hello")[0] = '-';
assert(libsimple_strncmove(&buf[5], &buf[5], 'l', 5) == &buf[5 + 3]);
assert(!strcmp(buf, "-----hel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
stpcpy(&buf[5], "hello")[0] = '-';
assert(libsimple_strncmove(&buf[5], &buf[5], 'x', 5) == NULL);
assert(!strncmp(buf, "-----hello-", 11));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], '\0', 5) == NULL);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'o', 5) == &buf[5 + 5]);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'l', 5) == &buf[5 + 3]);
assert(!strcmp(buf, "-----hel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'x', 5) == NULL);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], '\0', 5) == NULL);
assert(!strcmp(buf, "---hellolo"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'o', 5) == &buf[3 + 5]);
assert(!strcmp(buf, "---hellolo"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'l', 5) == &buf[3 + 3]);
assert(!strcmp(buf, "---hel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'x', 5) == NULL);
assert(!strcmp(buf, "---hellolo"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], '\0', 5) == NULL);
assert(!strncmp(buf, "-----helhello-", 14));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'o', 5) == &buf[8 + 5]);
assert(!strncmp(buf, "-----helhello-", 14));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'l', 5) == &buf[8 + 3]);
assert(!strcmp(buf, "-----helhel"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'x', 5) == NULL);
assert(!strncmp(buf, "-----helhello-", 14));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], '\0', 3) == NULL);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'o', 3) == NULL);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'l', 3) == &buf[5 + 3]);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[5], &buf[5], 'x', 3) == NULL);
assert(!strcmp(buf, "-----hello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], '\0', 3) == NULL);
assert(!strcmp(buf, "---helello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'o', 3) == NULL);
assert(!strcmp(buf, "---helello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'l', 3) == &buf[3 + 3]);
assert(!strcmp(buf, "---helello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[3], &buf[5], 'x', 3) == NULL);
assert(!strcmp(buf, "---helello"));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], '\0', 3) == NULL);
assert(!strncmp(buf, "-----helhel-", 12));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'o', 3) == NULL);
assert(!strncmp(buf, "-----helhel-", 12));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'l', 3) == &buf[8 + 3]);
assert(!strncmp(buf, "-----helhel-", 12));
memset(buf, '-', sizeof(buf)), buf[sizeof(buf) - 1] = '\0';
strcpy(&buf[5], "hello");
assert(libsimple_strncmove(&buf[8], &buf[5], 'x', 3) == NULL);
assert(!strncmp(buf, "-----helhel-", 12));
return 0;
}
#endif
