64c971350e
We also used some string_view functionality from C++20/23. These have been replaced with free functions with the same name. Change-Id: I3bf40f99aeb500495f344fd8c6872619267d42be Reviewed-on: https://skia-review.googlesource.com/c/skia/+/500897 Reviewed-by: Herb Derby <herb@google.com> Auto-Submit: John Stiles <johnstiles@google.com> Reviewed-by: Brian Osman <brianosman@google.com> Commit-Queue: John Stiles <johnstiles@google.com>
50 lines
1.3 KiB
C++
50 lines
1.3 KiB
C++
/*
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* Copyright 2021 Google LLC.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef SkStringView_DEFINED
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#define SkStringView_DEFINED
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#include <string.h>
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#include <string_view>
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namespace skstd {
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using string_view = std::string_view;
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// C++20 additions
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inline constexpr bool starts_with(string_view str, string_view prefix) {
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if (prefix.length() > str.length()) {
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return false;
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}
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return prefix.length() == 0 || !memcmp(str.data(), prefix.data(), prefix.length());
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}
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inline constexpr bool starts_with(string_view str, string_view::value_type c) {
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return !str.empty() && str.front() == c;
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}
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inline constexpr bool ends_with(string_view str, string_view suffix) {
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if (suffix.length() > str.length()) {
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return false;
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}
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return suffix.length() == 0 || !memcmp(str.data() + str.length() - suffix.length(),
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suffix.data(), suffix.length());
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}
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inline constexpr bool ends_with(string_view str, string_view::value_type c) {
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return !str.empty() && str.back() == c;
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}
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// C++23 additions
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inline constexpr bool contains(string_view str, string_view needle) {
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return str.find(needle) != string_view::npos;
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}
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} // namespace skstd
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#endif
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