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115 lines
4.6 KiB
115 lines
4.6 KiB
/*
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* Copyright (c) 2021 by Geoffrey Merck F4FXL / KC3FRA
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#pragma once
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#include <string>
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#include <unordered_map>
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#include <utility>
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#include <cctype>
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#include <cstring>
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#include <cassert>
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#include <vector>
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#define isConfigSection(s)(!s.empty() && s[0] == '[' && s[s.length() - 1] == ']')
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#define isConfigValue(s)(s.find('=') != std::string::npos && s.find('#') > s.find('='))
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#define isSameNoCase(a,b)(strcasecmp(a.c_str(), b.c_str()) == 0)
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#define isDecimalInteger(s)(!s.empty() && (s[0] == '-' || std::isdigit(s[0])) && std::find_if(s.begin(), s.end(), [](unsigned char c) { return !(std::isdigit(c) || c == '-'); }) == s.end())
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#define isFloatingPoint(s)(!s.empty() && (s[0] == '-' || std::isdigit(s[0])) && std::find_if(s.begin(), s.end(), [](unsigned char c) { return !(std::isdigit(c) || c == '-' || c == '.'); }) == s.end())
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// https://www.programmingnotes.org/6504/c-how-to-make-map-unordered-map-keys-case-insensitive-using-c/
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struct case_insensitive_unordered_map {
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struct comp {
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bool operator() (const std::string& lhs, const std::string& rhs) const {
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// On non Windows OS, use the function "strcasecmp" in #include <strings.h>
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return strcasecmp(lhs.c_str(), rhs.c_str()) == 0;
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}
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};
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struct hash {
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std::size_t operator() (std::string str) const {
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for (std::size_t index = 0; index < str.size(); ++index) {
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auto ch = static_cast<unsigned char>(str[index]);
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str[index] = static_cast<unsigned char>(std::tolower(ch));
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}
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return std::hash<std::string>{}(str);
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}
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};
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};
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typedef struct {
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std::string m_key;
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std::string m_value;
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} TConfigValue;
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typedef std::unordered_map<std::string, TConfigValue *, case_insensitive_unordered_map::hash, case_insensitive_unordered_map::comp> CConfigValuesMap;
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class CConfigSection {
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public:
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CConfigSection(const std::string name) :
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m_name(name)
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{
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assert(!name.empty());
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}
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~CConfigSection()
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{
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for(auto it = m_values.begin();it != m_values.end();it++) {
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delete it->second;
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}
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m_values.clear();
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}
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std::string getName() const
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{
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return m_name;
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}
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CConfigValuesMap & getValues()
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{
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return m_values;
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}
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private:
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std::string m_name;
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CConfigValuesMap m_values;
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};
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typedef std::unordered_map<std::string, CConfigSection *, case_insensitive_unordered_map::hash, case_insensitive_unordered_map::comp> CConfigSectionsMap;
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class CConfig
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{
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public:
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CConfig(const std::string filename);
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~CConfig();
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bool load();
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bool getValue(const std::string §ion, const std::string& key, bool &value, bool defaultValue) const;
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bool getValue(const std::string §ion, const std::string& key, int &value, int min, int max, int defaultValue) const;
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bool getValue(const std::string §ion, const std::string& key, double &value, double min, double max, double defaultValue) const;
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bool getValue(const std::string §ion, const std::string& key, unsigned int &value, unsigned int min, unsigned int max, unsigned int defaultValue) const;
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bool getValue(const std::string §ion, const std::string& key, unsigned char &value, unsigned char min, unsigned char max,unsigned char defaultValue) const;
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bool getValue(const std::string §ion, const std::string& key, std::string &value, unsigned int minLen, unsigned int maxLen, const std::string defaultValue) const;
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bool getValue(const std::string §ion, const std::string& key, std::string &value, const std::string defaultValue, const std::vector<std::string>& allowedValues) const;
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private:
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void stripComment(std::string& s) const;
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TConfigValue * readKeyAndValue(const std::string& s) const;
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TConfigValue * lookupValue(const std::string& section, const std::string& key) const;
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std::string m_filename;
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CConfigSectionsMap m_sections;
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};
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