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-rw-r--r--strncmove.c42
1 files changed, 42 insertions, 0 deletions
diff --git a/strncmove.c b/strncmove.c
new file mode 100644
index 0000000..ce53ed5
--- /dev/null
+++ b/strncmove.c
@@ -0,0 +1,42 @@
+/* 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) /* TODO test, man */
+{
+ char c = (char)c_, *p;
+ if (d < s) {
+ do {
+ if ((*d++ = *s) == c)
+ return d;
+ } while (*s++ && n--);
+ } else {
+ for (p = *(char **)(void *)&s; n; n--, p++) {
+ if (*p == c || *p) {
+ n = (size_t)(p - s);
+ p = &d[n];
+ do { d[n] = s[n]; } while (n--);
+ 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)
+{
+ return 0;
+}
+
+#endif