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-rw-r--r--strnccpy.c88
1 files changed, 88 insertions, 0 deletions
diff --git a/strnccpy.c b/strnccpy.c
new file mode 100644
index 0000000..176c8a0
--- /dev/null
+++ b/strnccpy.c
@@ -0,0 +1,88 @@
+/* See LICENSE file for copyright and license details. */
+#include "common.h"
+#ifndef TEST
+
+
+extern inline char *libsimple_strnccpy(char *restrict, const char *restrict, int, size_t);
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+ char buf[1024];
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", '\0', 1024) == &buf[6]);
+ assert(!strcmp(buf, "hello"));
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'o', 1024) == &buf[5]);
+ assert(!strcmp(buf, "hello"));
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'l', 1024) == &buf[3]);
+ assert(!strcmp(buf, "hel"));
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'x', 1024) == NULL);
+ assert(!strcmp(buf, "hello"));
+
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", '\0', 6) == &buf[6]);
+ assert(!strcmp(buf, "hello"));
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'o', 6) == &buf[5]);
+ assert(!strcmp(buf, "hello"));
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'l', 6) == &buf[3]);
+ assert(!strcmp(buf, "hel"));
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'x', 6) == NULL);
+ assert(!strcmp(buf, "hello"));
+
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", '\0', 5) == NULL);
+ assert(!strncmp(buf, "hellox", 6));
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'o', 5) == &buf[5]);
+ assert(!strncmp(buf, "hellox", 6));
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'l', 5) == &buf[3]);
+ assert(!strcmp(buf, "hel"));
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'x', 5) == NULL);
+ assert(!strncmp(buf, "hellox", 6));
+
+
+ memset(buf, 'x', sizeof(buf));
+ buf[sizeof(buf) - 1] = '\0';
+ assert(libsimple_strnccpy(buf, "hello", 'o', 3) == NULL);
+ assert(!strncmp(buf, "helx", 4));
+
+ return 0;
+}
+
+#endif