99 lines
2.4 KiB
C++
99 lines
2.4 KiB
C++
// SPDX-License-Identifier: BSD-2-Clause
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// author: Max Kellermann <max.kellermann@gmail.com>
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#ifndef WSTRING_COMPARE_HXX
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#define WSTRING_COMPARE_HXX
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#include "WStringAPI.hxx"
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#include <string_view>
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#include <wchar.h>
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[[gnu::pure]] [[gnu::nonnull]]
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static inline bool
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StringIsEmpty(const wchar_t *string) noexcept
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{
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return *string == 0;
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}
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[[gnu::pure]]
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static inline bool
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StringIsEqual(std::wstring_view a, std::wstring_view b) noexcept
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{
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return a.size() == b.size() &&
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StringIsEqual(a.data(), b.data(), b.size());
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}
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[[gnu::pure]]
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static inline bool
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StringIsEqualIgnoreCase(std::wstring_view a, std::wstring_view b) noexcept
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{
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return a.size() == b.size() &&
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StringIsEqualIgnoreCase(a.data(), b.data(), b.size());
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}
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[[gnu::pure]] [[gnu::nonnull]]
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static inline bool
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StringStartsWith(const wchar_t *haystack, std::wstring_view needle) noexcept
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{
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return StringIsEqual(haystack, needle.data(), needle.size());
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}
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[[gnu::pure]] [[gnu::nonnull]]
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bool
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StringEndsWith(const wchar_t *haystack, const wchar_t *needle) noexcept;
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[[gnu::pure]] [[gnu::nonnull]]
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bool
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StringEndsWithIgnoreCase(const wchar_t *haystack,
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const wchar_t *needle) noexcept;
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/**
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* Returns the portion of the string after a prefix. If the string
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* does not begin with the specified prefix, this function returns
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* nullptr.
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*/
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[[gnu::pure]] [[gnu::nonnull]]
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static inline const wchar_t *
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StringAfterPrefix(const wchar_t *haystack, std::wstring_view needle) noexcept
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{
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return StringStartsWith(haystack, needle)
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? haystack + needle.size()
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: nullptr;
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}
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[[gnu::pure]] [[gnu::nonnull]]
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static inline bool
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StringStartsWithIgnoreCase(const wchar_t *haystack,
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std::wstring_view needle) noexcept
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{
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return StringIsEqualIgnoreCase(haystack, needle.data(), needle.size());
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}
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/**
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* Returns the portion of the string after a prefix. If the string
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* does not begin with the specified prefix, this function returns
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* nullptr.
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* This function is case-independent.
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*/
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[[gnu::pure]] [[gnu::nonnull]]
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static inline const wchar_t *
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StringAfterPrefixIgnoreCase(const wchar_t *haystack,
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std::wstring_view needle) noexcept
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{
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return StringStartsWithIgnoreCase(haystack, needle)
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? haystack + needle.size()
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: nullptr;
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}
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/**
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* Check if the given string ends with the specified suffix. If yes,
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* returns the position of the suffix, and nullptr otherwise.
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*/
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[[gnu::pure]] [[gnu::nonnull]]
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const wchar_t *
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FindStringSuffix(const wchar_t *p, const wchar_t *suffix) noexcept;
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#endif
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