1 files changed, 41 insertions, 0 deletions
diff --git a/strcasechr.c b/strcasechr.c
new file mode 100644
index 0000000..83e8f73
--- /dev/null
+++ b/strcasechr.c
@@ -0,0 +1,41 @@
+/* See LICENSE file for copyright and license details. */
+#include "libsimple.h"
+#ifndef TEST
+
+
+char *
+libsimple_strcasechr(const char *s_, int c)
+{
+	char *s = *(char **)(void *)&s_, lc = (char)tolower(c), uc = (char)toupper(c);
+	if (lc != uc)
+		for (; *s && *s != lc && *s != uc; s++);
+	else
+		for (; *s && *s != lc; s++);
+	return *s ? s : NULL;
+}
+
+
+#else
+#include "test.h"
+
+int
+main(void)
+{
+	assert(!strcmpnul(libsimple_strcasechr("abcABCabcABCx123123", 'c'), "cABCabcABCx123123"));
+	assert(!strcmpnul(libsimple_strcasechr("abcABCabcABCx123123", 'a'), "abcABCabcABCx123123"));
+	assert(!strcmpnul(libsimple_strcasechr("abcABCabcABCx123123", 'x'), "x123123"));
+	assert(!strcmpnul(libsimple_strcasechr("abcABCabcABCx123123", 'C'), "cABCabcABCx123123"));
+	assert(!strcmpnul(libsimple_strcasechr("abcABCabcABCx123123", 'A'), "abcABCabcABCx123123"));
+	assert(!strcmpnul(libsimple_strcasechr("abcABCabcABCx123123", 'X'), "x123123"));
+	assert(!strcmpnul(libsimple_strcasechr("ABCabcABCabcX123123", 'c'), "CabcABCabcX123123"));
+	assert(!strcmpnul(libsimple_strcasechr("ABCabcABCabcX123123", 'a'), "ABCabcABCabcX123123"));
+	assert(!strcmpnul(libsimple_strcasechr("ABCabcABCabcX123123", 'x'), "X123123"));
+	assert(!strcmpnul(libsimple_strcasechr("ABCabcABCabcX123123", 'C'), "CabcABCabcX123123"));
+	assert(!strcmpnul(libsimple_strcasechr("ABCabcABCabcX123123", 'A'), "ABCabcABCabcX123123"));
+	assert(!strcmpnul(libsimple_strcasechr("ABCabcABCabcX123123", 'X'), "X123123"));
+	assert(!libsimple_strcasechr("ABCabcABCabcX123123", '0'));
+	assert(!strcmpnul(libsimple_strcasechr("ABCabcABCabcX123123", '1'), "123123"));
+	return 0;
+}
+
+#endif