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Diffstat (limited to 'Firestore/third_party/abseil-cpp/absl/strings/match.h')
-rw-r--r-- | Firestore/third_party/abseil-cpp/absl/strings/match.h | 84 |
1 files changed, 84 insertions, 0 deletions
diff --git a/Firestore/third_party/abseil-cpp/absl/strings/match.h b/Firestore/third_party/abseil-cpp/absl/strings/match.h new file mode 100644 index 0000000..6005533 --- /dev/null +++ b/Firestore/third_party/abseil-cpp/absl/strings/match.h @@ -0,0 +1,84 @@ +// +// 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. +// +// ----------------------------------------------------------------------------- +// File: match.h +// ----------------------------------------------------------------------------- +// +// This file contains simple utilities for performing std::string matching checks. +// All of these function parameters are specified as `absl::string_view`, +// meaning that these functions can accept `std::string`, `absl::string_view` or +// nul-terminated C-style strings. +// +// Examples: +// std::string s = "foo"; +// absl::string_view sv = "f"; +// assert(absl::StrContains(s, sv)); +// +// Note: The order of parameters in these functions is designed to mimic the +// order an equivalent member function would exhibit; +// e.g. `s.Contains(x)` ==> `absl::StrContains(s, x). +#ifndef ABSL_STRINGS_MATCH_H_ +#define ABSL_STRINGS_MATCH_H_ + +#include <cstring> + +#include "absl/strings/string_view.h" + +namespace absl { + +// StrContains() +// +// Returns whether a given std::string `haystack` contains the substring `needle`. +inline bool StrContains(absl::string_view haystack, absl::string_view needle) { + return static_cast<absl::string_view::size_type>(haystack.find(needle, 0)) != + haystack.npos; +} + +// StartsWith() +// +// Returns whether a given std::string `text` begins with `prefix`. +inline bool StartsWith(absl::string_view text, absl::string_view prefix) { + return prefix.empty() || + (text.size() >= prefix.size() && + memcmp(text.data(), prefix.data(), prefix.size()) == 0); +} + +// EndsWith() +// +// Returns whether a given std::string `text` ends with `suffix`. +inline bool EndsWith(absl::string_view text, absl::string_view suffix) { + return suffix.empty() || + (text.size() >= suffix.size() && + memcmp(text.data() + (text.size() - suffix.size()), suffix.data(), + suffix.size()) == 0 + ); +} + +// StartsWithIgnoreCase() +// +// Returns whether a given std::string `text` starts with `starts_with`, ignoring +// case in the comparison. +bool StartsWithIgnoreCase(absl::string_view text, absl::string_view prefix); + +// EndsWithIgnoreCase() +// +// Returns whether a given std::string `text` ends with `ends_with`, ignoring case +// in the comparison. +bool EndsWithIgnoreCase(absl::string_view text, absl::string_view suffix); + +} // namespace absl + +#endif // ABSL_STRINGS_MATCH_H_ |