match.cc 1.5 KB

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  1. // Copyright 2017 The Abseil Authors.
  2. //
  3. // Licensed under the Apache License, Version 2.0 (the "License");
  4. // you may not use this file except in compliance with the License.
  5. // You may obtain a copy of the License at
  6. //
  7. // https://www.apache.org/licenses/LICENSE-2.0
  8. //
  9. // Unless required by applicable law or agreed to in writing, software
  10. // distributed under the License is distributed on an "AS IS" BASIS,
  11. // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  12. // See the License for the specific language governing permissions and
  13. // limitations under the License.
  14. #include "absl/strings/match.h"
  15. #include "absl/strings/internal/memutil.h"
  16. namespace absl {
  17. ABSL_NAMESPACE_BEGIN
  18. bool EqualsIgnoreCase(absl::string_view piece1,
  19. absl::string_view piece2) noexcept {
  20. return (piece1.size() == piece2.size() &&
  21. 0 == absl::strings_internal::memcasecmp(piece1.data(), piece2.data(),
  22. piece1.size()));
  23. // memcasecmp uses absl::ascii_tolower().
  24. }
  25. bool StartsWithIgnoreCase(absl::string_view text,
  26. absl::string_view prefix) noexcept {
  27. return (text.size() >= prefix.size()) &&
  28. EqualsIgnoreCase(text.substr(0, prefix.size()), prefix);
  29. }
  30. bool EndsWithIgnoreCase(absl::string_view text,
  31. absl::string_view suffix) noexcept {
  32. return (text.size() >= suffix.size()) &&
  33. EqualsIgnoreCase(text.substr(text.size() - suffix.size()), suffix);
  34. }
  35. ABSL_NAMESPACE_END
  36. } // namespace absl