1 files changed, 32 insertions, 0 deletions
diff --git a/prism/util/pm_strncasecmp.h b/prism/util/pm_strncasecmp.h
new file mode 100644
index 0000000000..5cb88cb5eb
--- /dev/null
+++ b/prism/util/pm_strncasecmp.h
@@ -0,0 +1,32 @@
+/**
+ * @file pm_strncasecmp.h
+ *
+ * A custom strncasecmp implementation.
+ */
+#ifndef PRISM_STRNCASECMP_H
+#define PRISM_STRNCASECMP_H
+
+#include "prism/defines.h"
+
+#include <ctype.h>
+#include <stddef.h>
+#include <stdint.h>
+
+/**
+ * Compare two strings, ignoring case, up to the given length. Returns 0 if the
+ * strings are equal, a negative number if string1 is less than string2, or a
+ * positive number if string1 is greater than string2.
+ *
+ * Note that this is effectively our own implementation of strncasecmp, but it's
+ * not available on all of the platforms we want to support so we're rolling it
+ * here.
+ *
+ * @param string1 The first string to compare.
+ * @param string2 The second string to compare
+ * @param length The maximum number of characters to compare.
+ * @return 0 if the strings are equal, a negative number if string1 is less than
+ *     string2, or a positive number if string1 is greater than string2.
+ */
+int pm_strncasecmp(const uint8_t *string1, const uint8_t *string2, size_t length);
+
+#endif