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72 lines
1.7 KiB
72 lines
1.7 KiB
// Copyright 2022 Google LLC
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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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#include "./escaping.h"
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namespace codelab {
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std::string Escape(std::string_view str) {
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std::string result;
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for (size_t i = 0; i < str.size(); ++i) {
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switch (str[i]) {
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case '\n':
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result.push_back('\\');
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result.push_back('n');
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break;
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case '\r':
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result.push_back('\\');
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result.push_back('r');
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break;
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case '\t':
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result.push_back('\\');
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result.push_back('t');
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break;
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case '\\':
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result.push_back('\\');
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result.push_back('\\');
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break;
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default:
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result.push_back(str[i]);
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break;
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}
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}
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return result;
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}
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std::string Unescape(std::string_view str) {
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std::string result;
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for (size_t i = 0; i < str.size(); ++i) {
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if (str[i] == '\\') {
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++i;
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switch (str[i]) {
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case 'n':
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result.push_back('\n');
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break;
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case 't':
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result.push_back('\t');
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break;
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case '\\':
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result.push_back('\\');
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break;
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default:
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break;
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}
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} else {
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result.push_back(str[i]);
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}
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}
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return result;
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}
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} // namespace codelab
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