Initial Commit

absl/strings/match.cc

@@ -0,0 +1,40 @@
+// Copyright 2017 The Abseil Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//      http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "absl/strings/match.h"
+
+#include "absl/strings/internal/memutil.h"
+
+namespace absl {
+
+namespace {
+bool CaseEqual(absl::string_view piece1, absl::string_view piece2) {
+  return (piece1.size() == piece2.size() &&
+          0 == strings_internal::memcasecmp(piece1.data(), piece2.data(),
+                                            piece1.size()));
+  // memcasecmp uses ascii_tolower().
+}
+}  // namespace
+
+bool StartsWithIgnoreCase(absl::string_view text, absl::string_view preffix) {
+  return (text.size() >= preffix.size()) &&
+         CaseEqual(text.substr(0, preffix.size()), preffix);
+}
+
+bool EndsWithIgnoreCase(absl::string_view text, absl::string_view suffix) {
+  return (text.size() >= suffix.size()) &&
+         CaseEqual(text.substr(text.size() - suffix.size()), suffix);
+}
+
+}  // namespace absl