69 lines
2.5 KiB
C++
69 lines
2.5 KiB
C++
// Copyright (c) 2005, Niels Martin Hansen
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// All rights reserved.
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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 are met:
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//
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// * Redistributions of source code must retain the above copyright notice,
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// this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above copyright notice,
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// this list of conditions and the following disclaimer in the documentation
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// and/or other materials provided with the distribution.
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// * Neither the name of the Aegisub Group nor the names of its contributors
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// may be used to endorse or promote products derived from this software
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// without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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// CONTRACT, 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 OF THE
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// POSSIBILITY OF SUCH DAMAGE.
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//
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// Aegisub Project http://www.aegisub.org/
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/// @file string_codec.cpp
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/// @brief Encode and decode strings so they can safely be stored inside fields in SSA/ASS files
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/// @ingroup utility
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///
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// Functions for inline string encoding.
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// See header file for details.
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#include "config.h"
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#include "string_codec.h"
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#include <boost/format.hpp>
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std::string inline_string_encode(const std::string &input) {
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std::string output;
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output.reserve(input.size());
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auto format = boost::format("#%02X");
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for (char c : input) {
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if (c <= 0x1F || c == 0x23 || c == 0x2C || c == 0x3A || c == 0x7C)
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output += str(format % c);
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else
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output += c;
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}
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return output;
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}
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std::string inline_string_decode(const std::string &input) {
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std::string output;
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output.reserve(input.size());
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for (size_t i = 0; i < input.size(); ++i) {
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if (input[i] != '#' || i + 2 > input.size())
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output += input[i];
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else {
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output += (char)strtol(input.substr(i + 1, 2).c_str(), nullptr, 16);
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i += 2;
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}
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}
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return output;
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}
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