blame: source/code/common.cpp

/*

===========================================================================

blockattack - Block Attack - Rise of the Blocks

Copyright (C) 2005-2012 Poul Sander

This program is free software: you can redistribute it and/or modify

it under the terms of the GNU General Public License as published by

the Free Software Foundation, either version 2 of the License, or

(at your option) any later version.

This program is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

GNU General Public License for more details.

You should have received a copy of the GNU General Public License

along with this program.  If not, see http://www.gnu.org/licenses/

Source information and contacts persons can be found at

http://blockattack.sf.net

===========================================================================

*/

#include "common.h"

#include <sstream>

static stringstream converter;

//Function to convert numbers to string

string itoa(int num)

{

	converter.str(std::string());

	converter.clear();

	converter << num;

	return converter.str();

}

string double2str(double num)

{

	converter.str(std::string());

	converter.clear();

	converter << num;

	return converter.str();

}

/**

 * str2double parses a string and returns a double with the value of the string.

 * if the string is not a double then 0.0 is returned instead of throing an error

 * in that way this function will always return a useable value.

 */

double str2double(const string &str2parse)

{

	try

	{

		converter.clear();

		converter.str(str2parse);

		double val = 0.0;

		converter >> val;

		return val;

	}

	catch(ios_base::failure &f)

	{

		return 0.0;

	}

}

/**

 * str2int parses a string and returns an int with the value of the string.

 * if the string is not an int then 0 is returned instead of throing an error

 * in that way this function will always return a useable value.

 */

int str2int(const string &str2parse)

{

	try

	{

		converter.clear();

		converter.str(str2parse);

		int val = 0;

		converter >> val;

		return val;

	}

	catch(ios_base::failure &f)

	{

		return 0;

	}

}

#ifdef WIN32

//Returns path to "my Documents" in windows:

string getMyDocumentsPath()

{

	TCHAR pszPath[MAX_PATH];

	//if (SUCCEEDED(SHGetSpecialFolderPath(NULL, pszPath, CSIDL_PERSONAL, FALSE))) {

	if (SUCCEEDED(SHGetFolderPath(NULL, CSIDL_PERSONAL, NULL, 0, pszPath)))

	{

		// pszPath is now the path that you want

#if DEBUG

		cout << "MyDocuments Located: " << pszPath << endl;

#endif

		string theResult= pszPath;

		return theResult;

	}

	else

	{

		cout << "Warning: My Documents not found!" << endl;

		string theResult ="";

		return theResult;

	}

}

#endif

/**

 * Returns the path to where all settings must be saved.

 * On unix-like systems this is the home-folder under: ~/.gamesaves/GAMENAME

 * In Windows it is My Documents/My Games

 * Consider changing this for Vista that has a special save games folder

 */

string getPathToSaveFiles()

{

#ifdef __unix__

	return (string)getenv("HOME")+(string)"/.gamesaves/"+GAMENAME;

#elif WIN32

	return getMyDocumentsPath()+(string)"/My Games/"+GAMENAME;

#else

	return ".";

#endif

}

/**

 * Takes a number of milliseconds and returns the value in commonTime format.

 */

commonTime TimeHandler::ms2ct(unsigned int milliseconds)

{

	commonTime ct;

	ct.days = 0;

	unsigned int time = milliseconds;

	ct.hours = time/(1000*60*60);

	time = time % (1000*60*60);

	ct.minutes = time/(1000*60);

	time = time % (1000*60);

	ct.seconds = time/1000;

	return ct;

}

commonTime TimeHandler::getTime(const string &name)

{

	commonTime ct;

	ct.days = Config::getInstance()->getInt(name+"Days");

	ct.hours = Config::getInstance()->getInt(name+"Hours");

	ct.minutes = Config::getInstance()->getInt(name+"Minutes");

	ct.seconds = Config::getInstance()->getInt(name+"Seconds");

	return ct;

}

/**

 * Returns the total runtime with toAdd added but without writing it to config file.

 * Used for stats

 */

commonTime TimeHandler::peekTime(const string &name, const commonTime &toAdd)

{

	commonTime ct = getTime(name);

	ct.seconds +=toAdd.seconds;

	ct.minutes +=ct.seconds/60;

	ct.seconds = ct.seconds%60;

	ct.minutes += toAdd.minutes;

	ct.hours += ct.minutes/60;

	ct.minutes = ct.minutes%60;

	ct.hours += toAdd.hours;

	ct.days += ct.hours/24;

	ct.hours = ct.hours%24;

	ct.days += toAdd.days;

	return ct;

}

/**

 * Same as peekTotalTime but writes the time to the config file.

 * Should only be called only once! when the program shuts down

 */

commonTime TimeHandler::addTime(const string &name, const commonTime &toAdd)

{

	commonTime ct = peekTime(name,toAdd);

	Config::getInstance()->setInt(name+"Days",ct.days);

	Config::getInstance()->setInt(name+"Hours",ct.hours);

	Config::getInstance()->setInt(name+"Minutes",ct.minutes);

	Config::getInstance()->setInt(name+"Seconds",ct.seconds);

	return ct;

}

Config* Config::instance = 0;

Config::Config()

{

	configMap.clear();

	load();

	shuttingDown = 0; // Not shutting down

}

void Config::load()

{

	string filename = getPathToSaveFiles()+"/configFile";

	ifstream inFile(filename.c_str());

	string key;

	string previuskey;

	char value[MAX_VAR_LENGTH];

	if(inFile)

	{

		while(!inFile.eof())

		{

			inFile >> key;

			if(key==previuskey) //the last entry will be read 2 times if a linebreak is missing in the end

				continue;

			previuskey = key;

			inFile.get(); //Read the space between the key and the content

			inFile.getline(value,MAX_VAR_LENGTH);

#if DEBUG

			cout << "Config "<< "read: " << key << " with:\"" << value << "\"" << endl;

#endif

			configMap[key] = (string)value;

		}

		inFile.close();

	}

}

Config* Config::getInstance()

{

	if(Config::instance==0)

	{

		Config::instance = new Config();

	}

	return Config::instance;

}

void Config::save()

{

	string filename = getPathToSaveFiles()+"/configFile";

	ofstream outFile(filename.c_str(),ios::trunc);

	if(outFile)

	{

		map<string,string>::iterator iter;

		for(iter = configMap.begin(); iter != configMap.end(); iter++)

		{

			outFile << iter->first << " " << iter->second << endl;

		}

		outFile << "\n"; //The last entry in the file will be read double if a linebreak is missing

		//This is checked on load too in case a user changes it himself.

	}

	outFile.close();

}

bool Config::exists(const string &varName) const

{

	//Using that find returns an iterator to the end of the map if not found

	return configMap.find(varName) != configMap.end();

}

void Config::setDefault(const string &varName,const string &content)

{

	if(exists(varName))

		return; //Already exists do not change

	setString(varName,content);

}

void Config::setShuttingDown(long shuttingDown)

{

	this->shuttingDown = shuttingDown;

}

long Config::isShuttingDown() const

{

	return shuttingDown;

}

void Config::setString(const string &varName, const string &content)

{

	configMap[varName] = content;

}

void Config::setInt(const string &varName, int content)

{

	configMap[varName] = itoa(content);

}

void Config::setValue(const string &varName,double content)

{

	configMap[varName] = double2str(content);

}

string Config::getString(const string &varName)

{

	if(exists(varName))

	{

		return configMap[varName];

	}

	else

		return "";

}

int Config::getInt(const string &varName)

{

	if(exists(varName))

	{

		return str2int(configMap[varName]);

	}

	else

		return 0;

}

double Config::getValue(const string &varName)

{

	if(exists(varName))

	{

		return str2double(configMap[varName]);

	}

	else

		return 0.0;

}