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82 lines
2.9 KiB
82 lines
2.9 KiB
/****************************************************************************
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Copyright (c) 2021-2023 Xiamen Yaji Software Co., Ltd.
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http://www.cocos.com
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal
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in the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do so,
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subject to the following conditions:
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The above copyright notice and this permission notice shall be included in
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all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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THE SOFTWARE.
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****************************************************************************/
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#pragma once
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#include <boost/algorithm/string/predicate.hpp>
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#include <string_view>
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#include "cocos/base/std/container/array.h"
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#include "cocos/renderer/pipeline/custom/details/GslUtils.h"
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namespace cc {
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namespace render {
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namespace impl {
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template <class CharT, class Allocator>
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inline void cleanPath(std::basic_string<CharT, std::char_traits<CharT>, Allocator> &str) noexcept {
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using string_t = std::basic_string<CharT, std::char_traits<CharT>, Allocator>;
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constexpr CharT slash[] = {'/', '\0'};
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constexpr CharT doubleSlash[] = {'/', '/', '\0'};
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CC_EXPECTS(!str.empty());
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CC_EXPECTS(boost::algorithm::starts_with(str, std::string_view(slash)));
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CC_EXPECTS(str.find(doubleSlash) == string_t::npos);
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{ // remove all /./
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constexpr CharT current[] = {'/', '.', '/', '\0'};
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auto pos = str.rfind(current);
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while (pos != string_t::npos) {
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str.erase(pos, 2);
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pos = str.rfind(current);
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}
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// remove tailing /.
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constexpr CharT ending[] = {'/', '.', '\0'};
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if (boost::algorithm::ends_with(str, std::string_view(ending))) {
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str.resize(str.size() - 2);
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}
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}
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// try remove /..
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constexpr ccstd::array<CharT, 4> previous = {CharT('/'), CharT('.'), CharT('.'), CharT('\0')};
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auto pos = str.find(previous.data());
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while (pos != string_t::npos) {
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if (pos == 0) {
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// root element has not parent path
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str = {}; // slash;
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return;
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}
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auto beg = str.rfind(slash, pos - 1);
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CC_EXPECTS(beg != string_t::npos);
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str.erase(beg, pos - beg + previous.size() - 1);
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}
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}
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} // namespace impl
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} // namespace render
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} // namespace cc
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