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111 lines
3.2 KiB
111 lines
3.2 KiB
/* |
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* Copyright (c) 2014-2016, Andrzej Rybczak <electricityispower@gmail.com> |
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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 |
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* are met: |
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* |
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* 1. 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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* 2. 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 distribution. |
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* |
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* 3. Neither the name of the copyright holder nor the names of its |
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* contributors may be used to endorse or promote products derived from |
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* this software without specific prior written permission. |
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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 FOR |
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
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* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED |
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* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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#include <boost/regex.hpp> |
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#include <iostream> |
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#include "utility/option_parser.h" |
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bool yes_no(const std::string &v) |
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{ |
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if (v == "yes") |
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return true; |
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else if (v == "no") |
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return false; |
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else |
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invalid_value(v); |
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} |
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//////////////////////////////////////////////////////////////////////////////// |
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bool option_parser::run(std::istream &is, bool ignore_errors) |
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{ |
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// quoted value. leftmost and rightmost quotation marks are the delimiters. |
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boost::regex quoted("(\\w+)\\h*=\\h*\"(.*)\"[^\"]*"); |
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// unquoted value. whitespaces get trimmed. |
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boost::regex unquoted("(\\w+)\\h*=\\h*(.*?)\\h*"); |
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boost::smatch match; |
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std::string line; |
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while (std::getline(is, line)) |
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{ |
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if (boost::regex_match(line, match, quoted) |
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|| boost::regex_match(line, match, unquoted)) |
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{ |
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std::string option = match[1]; |
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auto it = m_parsers.find(option); |
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if (it != m_parsers.end()) |
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{ |
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try |
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{ |
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it->second.parse(match[2]); |
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} |
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catch (std::exception &e) |
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{ |
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std::cerr << "Error while processing option \"" << option |
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<< "\": " << e.what() << "\n"; |
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if (!ignore_errors) |
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return false; |
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} |
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} |
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else |
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{ |
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std::cerr << "Unknown option: " << option << "\n"; |
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if (!ignore_errors) |
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return false; |
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} |
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} |
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} |
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return true; |
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} |
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bool option_parser::initialize_undefined(bool ignore_errors) |
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{ |
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for (auto &pp : m_parsers) |
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{ |
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auto &p = pp.second; |
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if (!p.used()) |
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{ |
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try |
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{ |
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p.parse_default(); |
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} |
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catch (std::exception &e) |
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{ |
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std::cerr << "Error while initializing option \"" << pp.first |
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<< "\": " << e.what() << "\n"; |
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if (ignore_errors) |
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return false; |
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} |
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} |
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} |
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return true; |
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}
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