1 files changed, 34 insertions, 0 deletions
diff --git a/src/CharClassify.cxx b/src/CharClassify.cxx
index acab4b229..42a0ff10e 100644
--- a/src/CharClassify.cxx
+++ b/src/CharClassify.cxx
@@ -41,3 +41,37 @@ void CharClassify::SetCharClasses(const unsigned char *chars, cc newCharClass) {
 		}
 	}
 }
+
+int CompareCaseInsensitive(const char *a, const char *b) {
+	while (*a && *b) {
+		if (*a != *b) {
+			char upperA = MakeUpperCase(*a);
+			char upperB = MakeUpperCase(*b);
+			if (upperA != upperB)
+				return upperA - upperB;
+		}
+		a++;
+		b++;
+	}
+	// Either *a or *b is nul
+	return *a - *b;
+}
+
+int CompareNCaseInsensitive(const char *a, const char *b, size_t len) {
+	while (*a && *b && len) {
+		if (*a != *b) {
+			char upperA = MakeUpperCase(*a);
+			char upperB = MakeUpperCase(*b);
+			if (upperA != upperB)
+				return upperA - upperB;
+		}
+		a++;
+		b++;
+		len--;
+	}
+	if (len == 0)
+		return 0;
+	else
+		// Either *a or *b is nul
+		return *a - *b;
+}