1 files changed, 92 insertions, 0 deletions
diff --git a/strnmove.c b/strnmove.c
new file mode 100644
index 0000000..4bbcaa0
--- /dev/null
+++ b/strnmove.c
@@ -0,0 +1,92 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+extern inline char *libsimple_strnmove(char *, const char *, size_t);
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+	char buf[1024];
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(&buf[3], buf, SIZE_MAX) == &buf[3]);
+	assert(!strcmp(buf, "helhello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(buf, &buf[3], SIZE_MAX) == buf);
+	assert(!strcmp(buf, "lo world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(buf, buf, SIZE_MAX) == buf);
+	assert(!strcmp(buf, "hello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(&buf[3], buf, 12) == &buf[3]);
+	assert(!strcmp(buf, "helhello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(buf, &buf[3], 9) == buf);
+	assert(!strcmp(buf, "lo world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(buf, buf, 12) == buf);
+	assert(!strcmp(buf, "hello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(&buf[3], buf, 11) == &buf[3]);
+	assert(!strncmp(buf, "helhello worldx", 15));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(buf, &buf[3], 8) == buf);
+	assert(!strcmp(buf, "lo worldrld"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(buf, buf, 11) == buf);
+	assert(!strcmp(buf, "hello world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(&buf[3], buf, 2) == &buf[3]);
+	assert(!strcmp(buf, "helhe world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(buf, &buf[3], 2) == buf);
+	assert(!strcmp(buf, "lollo world"));
+
+	memset(buf, 'x', sizeof(buf));
+	buf[sizeof(buf) - 1] = '\0';
+	strcpy(buf, "hello world");
+	assert(libsimple_strnmove(buf, buf, 2) == buf);
+	assert(!strcmp(buf, "hello world"));
+
+	return 0;
+}
+
+#endif