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#include "ConfigFile.h" |
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#include "Util.h" |
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#include <fstream> |
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#include <sstream> |
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#include <stdexcept> |
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#include <stdlib.h> |
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const char SEPERATOR = '/'; |
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std::string trim(std::string const& source, char const* delims = " \t\r\n") |
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{ |
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std::string result(source); |
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std::string::size_type index = result.find_last_not_of(delims); |
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if (index != std::string::npos) |
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result.erase(++index); |
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index = result.find_first_not_of(delims); |
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if (index != std::string::npos) |
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result.erase(0, index); |
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else |
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result.erase(); |
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return result; |
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} |
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ConfigFile::ConfigFile() |
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{ |
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} |
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ConfigFile::ConfigFile(std::string const& configFile) |
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{ |
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Open(configFile); |
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} |
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bool ConfigFile::Open(std::string const& configFile) |
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{ |
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std::ifstream file(configFile.c_str()); |
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std::string line; |
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std::string name; |
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std::string value; |
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std::string inSection; |
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int posEqual; |
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if (!file) |
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{ |
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return false; |
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} |
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while (std::getline(file,line)) |
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{ |
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if (! line.length()) continue; |
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if (line[0] == '#') continue; |
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if (line[0] == ';') continue; |
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if (line[0] == '[') |
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{ |
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inSection=trim(line.substr(1,line.find(']')-1)); |
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continue; |
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} |
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posEqual=line.find('='); |
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name = trim(line.substr(0,posEqual)); |
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value = trim(line.substr(posEqual+1)); |
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content_.insert(std::make_pair(inSection+SEPERATOR+name,Value(value))); |
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} |
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return true; |
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} |
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Value const& ConfigFile::GetValue(std::string const& section, std::string const& entry) const |
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{ |
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content_iterator ci = content_.find(section + SEPERATOR + entry); |
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if (ci == content_.end()) throw "does not exist"; |
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return ci->second; |
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} |
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std::vector<Value> ConfigFile::GetValues(std::string const& section, std::string const& entry) const |
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{ |
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std::vector<Value> values; |
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std::string search = section + SEPERATOR + entry; |
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std::pair<content_iterator, content_iterator> range = content_.equal_range(search); |
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for (content_iterator it=range.first; it != range.second; ++it) |
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{ |
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values.push_back( it->second ); |
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} |
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return values; |
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} |
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Value const& ConfigFile::GetValue(std::string const& section, std::string const& entry, double value) |
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{ |
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try |
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return GetValue(section, entry); |
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} |
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catch (const char *) |
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return content_.insert(std::make_pair(section+SEPERATOR+entry, Value(value)))->second; |
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} |
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} |
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Value const& ConfigFile::GetValue(std::string const& section, std::string const& entry, std::string const& value) |
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{ |
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try |
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{ |
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return GetValue(section, entry); |
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} |
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catch (const char *) |
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{ |
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return content_.insert(std::make_pair(section+SEPERATOR+entry, Value(value)))->second; |
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} |
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} |
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std::string ConfigFile::DumpConfig() const |
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{ |
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std::ostringstream ss; |
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for (content_iterator it=content_.begin(); it!=content_.end(); ++it) |
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{ |
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ss << it->first << "=" << it->second.StringValue() << std::endl; |
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} |
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return ss.str(); |
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} |
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namespace ConfigHelper |
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{ |
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std::map<std::string, std::string> ParseArguments(const std::string& args) |
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{ |
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std::map<std::string, std::string> config; |
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std::vector<std::string> sections = Util::str_split(args, ";"); |
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for (unsigned i=0; i<sections.size(); i++) |
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{ |
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std::string current = Util::str_trim(sections[i]); |
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std::vector<std::string> params = Util::str_split( current, "="); |
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if (params.size() != 2) |
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throw std::runtime_error(std::string("syntax error in config line: ") + args); |
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std::string key = Util::str_tolower(Util::str_trim(params[0])); |
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std::string val = Util::str_trim(params[1]); |
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config[key] = val; |
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} |
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return config; |
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} |
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int StringToInt(const std::string& input) |
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{ |
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char* endptr = (char*) input.c_str(); |
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int retval = strtol(input.c_str(), &endptr, 10); |
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if ( *endptr != 0) |
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throw std::runtime_error( std::string("Error: can not convert this to a number: ") + input); |
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return retval; |
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} |
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} |