lib/string/strcmp/: strcaseeq(): Add function

Signed-off-by: Alejandro Colomar <[email protected]>

Author: alejandro-colomar

lib/Makefile.am

@@ -204,6 +204,8 @@ libshadow_la_SOURCES = \
 	string/strchr/strnul.h \
 	string/strchr/strrspn.c \
 	string/strchr/strrspn.h \
+	string/strcmp/strcaseeq.c \
+	string/strcmp/strcaseeq.h \
 	string/strcmp/streq.c \
 	string/strcmp/streq.h \
 	string/strcpy/stpecpy.c \

lib/string/strcmp/strcaseeq.c

@@ -0,0 +1,12 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <[email protected]>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#include <config.h>
+
+#include <stdbool.h>
+
+#include "string/strcmp/strcaseeq.h"
+
+
+extern inline bool strcaseeq(const char *s1, const char *s2);

lib/string/strcmp/strcaseeq.h

@@ -0,0 +1,30 @@
+// SPDX-FileCopyrightText: 2024, Alejandro Colomar <[email protected]>
+// SPDX-License-Identifier: BSD-3-Clause
+
+
+#ifndef SHADOW_INCLUDE_LIB_STRING_STRCMP_STRCASEEQ_H_
+#define SHADOW_INCLUDE_LIB_STRING_STRCMP_STRCASEEQ_H_
+
+
+#include <config.h>
+
+#include <stdbool.h>
+#include <strings.h>
+
+#include "attr.h"
+
+
+ATTR_STRING(1)
+ATTR_STRING(2)
+inline bool strcaseeq(const char *s1, const char *s2);
+
+
+// streq(), but case-insensitive.
+inline bool
+strcaseeq(const char *s1, const char *s2)
+{
+	return strcasecmp(s1, s2) == 0;
+}
+
+
+#endif  // include guard