Add rawmemrcasechr

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 33 insertions, 0 deletions

diff --git a/rawmemrcasechr.c b/rawmemrcasechr.c
new file mode 100644
index 0000000..68c5645
--- /dev/null
+++ b/rawmemrcasechr.c
@@ -0,0 +1,33 @@
+/* See LICENSE file for copyright and license details. */
+#include "libsimple.h"
+#ifndef TEST
+
+
+void *
+libsimple_rawmemrcasechr(const void *s_, int c, size_t n)
+{
+	char *s = *(char **)(void *)&s_;
+	c = tolower(c);
+	while (--n, tolower(s[n]) != c);
+	return &s[n];
+}
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+	assert(!strcmpnul(libsimple_rawmemrcasechr("abcABCabcABC", 'a', sizeof("abcABCabcABC") - 1), "ABC"));
+	assert(!strcmpnul(libsimple_rawmemrcasechr("abcABCabcABC", 'c', sizeof("abcABCabcABC") - 1), "C"));
+	assert(!strcmpnul(libsimple_rawmemrcasechr("abcABCabcABC", 'A', sizeof("abcABCabcABC") - 1), "ABC"));
+	assert(!strcmpnul(libsimple_rawmemrcasechr("abcABCabcABC", 'C', sizeof("abcABCabcABC") - 1), "C"));
+	assert(!strcmpnul(libsimple_rawmemrcasechr("ABCabcABCabc", 'a', sizeof("ABCabcABCabc") - 1), "abc"));
+	assert(!strcmpnul(libsimple_rawmemrcasechr("ABCabcABCabc", 'c', sizeof("ABCabcABCabc") - 1), "c"));
+	assert(!strcmpnul(libsimple_rawmemrcasechr("ABCabcABCabc", 'A', sizeof("ABCabcABCabc") - 1), "abc"));
+	assert(!strcmpnul(libsimple_rawmemrcasechr("ABCabcABCabc", 'C', sizeof("ABCabcABCabc") - 1), "c"));
+	return 0;
+}
+
+#endif