122 lines
3.6 KiB
C++
122 lines
3.6 KiB
C++
/*
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* Copyright (C) 2013-2017 Max Kellermann <max.kellermann@gmail.com>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the
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* distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef STRING_VIEW_HXX
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#define STRING_VIEW_HXX
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#include "ConstBuffer.hxx"
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#include "StringAPI.hxx"
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template<typename T>
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struct BasicStringView : ConstBuffer<T> {
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typedef typename ConstBuffer<T>::size_type size_type;
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typedef typename ConstBuffer<T>::value_type value_type;
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typedef typename ConstBuffer<T>::pointer_type pointer_type;
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using ConstBuffer<T>::data;
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using ConstBuffer<T>::size;
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BasicStringView() = default;
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constexpr BasicStringView(pointer_type _data, size_type _size) noexcept
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:ConstBuffer<T>(_data, _size) {}
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constexpr BasicStringView(pointer_type _begin,
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pointer_type _end) noexcept
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:ConstBuffer<T>(_begin, _end - _begin) {}
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BasicStringView(pointer_type _data) noexcept
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:ConstBuffer<T>(_data,
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_data != nullptr ? StringLength(_data) : 0) {}
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constexpr BasicStringView(std::nullptr_t n) noexcept
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:ConstBuffer<T>(n) {}
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using ConstBuffer<T>::empty;
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using ConstBuffer<T>::front;
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using ConstBuffer<T>::back;
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using ConstBuffer<T>::pop_front;
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using ConstBuffer<T>::pop_back;
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gcc_pure
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pointer_type Find(value_type ch) const noexcept {
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return StringFind(data, ch, this->size);
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}
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gcc_pure
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bool StartsWith(BasicStringView<T> needle) const noexcept {
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return this->size >= needle.size &&
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StringIsEqual(data, needle.data, needle.size);
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}
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gcc_pure
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bool EndsWith(BasicStringView<T> needle) const noexcept {
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return this->size >= needle.size &&
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StringIsEqual(data + this->size - needle.size,
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needle.data, needle.size);
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}
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gcc_pure
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bool Equals(BasicStringView<T> other) const noexcept {
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return this->size == other.size &&
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StringIsEqual(data, other.data, this->size);
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}
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gcc_pure
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bool EqualsIgnoreCase(BasicStringView<T> other) const noexcept {
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return this->size == other.size &&
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StringIsEqualIgnoreCase(data, other.data, this->size);
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}
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/**
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* Skip all whitespace at the beginning.
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*/
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void StripLeft() noexcept;
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/**
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* Skip all whitespace at the end.
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*/
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void StripRight() noexcept;
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void Strip() noexcept {
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StripLeft();
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StripRight();
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}
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};
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struct StringView : BasicStringView<char> {
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using BasicStringView::BasicStringView;
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StringView() = default;
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constexpr StringView(BasicStringView<value_type> src) noexcept
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:BasicStringView(src) {}
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};
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#endif
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