6de53819a7
- 432508bf64998983b3c194d5f164872ce3c2e573 Put visibility tags into absl external build files by Jon Cohen <cohenjon@google.com> - 25d59d11e7b833fe632cddb5bf4d76075ae6282b Use ABSL_PREDICT_TRUE instead of *FALSE for the range che... by Jon Cohen <cohenjon@google.com> - 8d8a5890a55ddd19aac849748441eeb57c684f10 Better detection for MSVC support on std::optional. by Xiaoyi Zhang <zhangxy@google.com> - c1b31e4a97939885c3bbc23ecb093e9619e73ad1 Internal cleanup by Gennadiy Rozental <rogeeff@google.com> - 4f56ad20c4eeccc6f5fb21ec6c7191233d34a090 Internal change. by Matt Calabrese <calabrese@google.com> - d2a02b52c75c295708170f4d17b7ff442c8d6a97 Fixed a minor typo in the SimpleAtob() function comment. by Abseil Team <absl-team@google.com> - 5adbff5c23a45278d06de2ef3a29ea51b0d1269e Internal cleanup by Gennadiy Rozental <rogeeff@google.com> GitOrigin-RevId: 432508bf64998983b3c194d5f164872ce3c2e573 Change-Id: I32ddd151d3350b96a22e8f1830f19b59374953ad
84 lines
2.9 KiB
C++
84 lines
2.9 KiB
C++
//
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// Copyright 2017 The Abseil Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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// -----------------------------------------------------------------------------
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// File: match.h
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// -----------------------------------------------------------------------------
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//
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// This file contains simple utilities for performing std::string matching checks.
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// All of these function parameters are specified as `absl::string_view`,
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// meaning that these functions can accept `std::string`, `absl::string_view` or
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// nul-terminated C-style strings.
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//
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// Examples:
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// std::string s = "foo";
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// absl::string_view sv = "f";
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// EXPECT_TRUE(absl::StrContains(s, sv));
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//
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// Note: The order of parameters in these functions is designed to mimic the
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// order an equivalent member function would exhibit;
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// e.g. `s.Contains(x)` ==> `absl::StrContains(s, x).
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#ifndef ABSL_STRINGS_MATCH_H_
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#define ABSL_STRINGS_MATCH_H_
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#include <cstring>
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#include "absl/strings/string_view.h"
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namespace absl {
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// StrContains()
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//
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// Returns whether a given std::string `haystack` contains the substring `needle`.
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inline bool StrContains(absl::string_view haystack, absl::string_view needle) {
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return static_cast<absl::string_view::size_type>(haystack.find(needle, 0)) !=
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haystack.npos;
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}
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// StartsWith()
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//
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// Returns whether a given std::string `text` begins with `prefix`.
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inline bool StartsWith(absl::string_view text, absl::string_view prefix) {
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return prefix.empty() ||
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(text.size() >= prefix.size() &&
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memcmp(text.data(), prefix.data(), prefix.size()) == 0);
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}
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// EndsWith()
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//
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// Returns whether a given std::string `text` ends with `suffix`.
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inline bool EndsWith(absl::string_view text, absl::string_view suffix) {
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return suffix.empty() ||
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(text.size() >= suffix.size() &&
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memcmp(text.data() + (text.size() - suffix.size()), suffix.data(),
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suffix.size()) == 0
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);
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}
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// StartsWithIgnoreCase()
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//
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// Returns whether a given std::string `text` starts with `starts_with`, ignoring
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// case in the comparison.
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bool StartsWithIgnoreCase(absl::string_view text, absl::string_view prefix);
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// EndsWithIgnoreCase()
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//
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// Returns whether a given std::string `text` ends with `ends_with`, ignoring case
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// in the comparison.
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bool EndsWithIgnoreCase(absl::string_view text, absl::string_view suffix);
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} // namespace absl
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#endif // ABSL_STRINGS_MATCH_H_
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