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#include <string>

/***************************************************************************

 *   Copyright (C) 2004 by Mattias Runge                                   *

 *   mattias@mrunge.se                                                     *

 *                                                                         *

 *   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, write to the                         *

 *   Free Software Foundation, Inc.,                                       *

 *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.             *

 ***************************************************************************/

#include "tools.h"

string niceTime()

{

	string result;

	struct tm tmStruct;

	time_t t = time(NULL);

	localtime_r(&t, &tmStruct);

	result += lpad(itos(tmStruct.tm_hour), 2, '0');

	result += ":";

	result += lpad(itos(tmStruct.tm_min), 2, '0');

	result += ":";

	result += lpad(itos(tmStruct.tm_sec), 2, '0');

	return result;

}

unsigned int hex2uint(string hex)

{

	return bin2uint(hex2bin(hex));

}

unsigned int bin2uint(string bin)

{

	unsigned int num = 0;

	for (int n = bin.length()-1; n >= 0; n--)

	{

		if (bin[n] == '1')

			num += (unsigned int)pow(2.0f, (int)(bin.length()-1-n));

	}

	return num;

}

int bin2int(string bin)

{

	int num = 0;

	if (bin[0] == '1') {

		for (int n = bin.length()-1; n >= 0; n--)

		{

			if (bin[n] == '0')

				num += (unsigned int)pow(2.0f, (int)(bin.length()-1-n));

		}

	num = (num*(-1)) -1;

	} else {

		for (int n = bin.length()-1; n >= 0; n--)

		{

			if (bin[n] == '1')

				num += (unsigned int)pow(2.0f, (int)(bin.length()-1-n));

		}

	}

	return num;

}

string invert(string bin)

{

	string inverted;

	for (int n = 0; n < bin.length(); n++)

		inverted += (bin[n] == '1' ? '0' : '1');

	return inverted;

}

float bin2float(string bin)

{

	float num = 0;

	if (bin.length() == 0)

		return 0.0f;

	bool isNegative = false;;

	if (bin[0] == '1')

	{

		bin = invert(bin);

		isNegative = true;

	}

	for (int n = bin.length()-1; n > 0; n--)

	{

		if (bin[n] == '1')

			num += pow(2.0f, (int)(bin.length()-1-n));

	}

	num /= 64.0f;

	if (isNegative)

		num = -num;

	return num;

}

string bin2hex(string bin)

{

	string hex;

	while (bin.size() > 0)

	{

		string part;

		try

		{

			part = bin.substr(0, 4);

		}

		catch (std::out_of_range& e)

		{

			cout << "DEBUG: bin2hex exception: " << e.what() << "\n";

			cout << "DEBUG: A bin=" << bin << endl;

			continue;

		}

		bin.erase(0, part.size());

		while (part.size() < 4)

			part = "0" + part;

		if (part == "0000")

			hex += '0';

		else if (part == "0001")

			hex += '1';

		else if (part == "0010")

			hex += '2';

		else if (part == "0011")

			hex += '3';

		else if (part == "0100")

			hex += '4';

		else if (part == "0101")

			hex += '5';

		else if (part == "0110")

			hex += '6';

		else if (part == "0111")

			hex += '7';

		else if (part == "1000")

			hex += '8';

		else if (part == "1001")

			hex += '9';

		else if (part == "1010")

			hex += 'a';

		else if (part == "1011")

			hex += 'b';

		else if (part == "1100")

			hex += 'c';

		else if (part == "1101")

			hex += 'd';

		else if (part == "1110")

			hex += 'e';

		else if (part == "1111")

			hex += 'f';

	}

	return hex;

}

string float2bin(float num, int length)

{

	// This is 16 bits, 6 bits is the decimal

	string bin;

	num = num*64;

	int16_t temp = (int16_t)num;

	return int2bin(temp, length);

}

string hex2bin(string hex)

{

	hex = strtolower(hex);

	string bin;

	for (int n = 0; n < hex.length(); n++)

	{

		switch (hex[n])

		{

			case '0': bin += "0000"; break;

			case '1': bin += "0001"; break;

			case '2': bin += "0010"; break;

			case '3': bin += "0011"; break;

			case '4': bin += "0100"; break;

			case '5': bin += "0101"; break;

			case '6': bin += "0110"; break;

			case '7': bin += "0111"; break;

			case '8': bin += "1000"; break;

			case '9': bin += "1001"; break;

			case 'a': bin += "1010"; break;

			case 'b': bin += "1011"; break;

			case 'c': bin += "1100"; break;

			case 'd': bin += "1101"; break;

			case 'e': bin += "1110"; break;

			case 'f': bin += "1111"; break;

		}

	}

	return bin;

}

string uint2bin(unsigned int num, int length)

{

	string bin;

	while (num)

	{

		bin = char((num&1)+'0') + bin;

		num >>= 1;

	}

	while (bin.size() < length)

		bin = "0" + bin;

	string bin2;

	for (int i = 0; i < length; i++)

	{

		bin2 = bin2 + bin[i];

	}

	return bin2;

}

string int2bin(int num, int length)

{

	string bin;

	if (num < 0) {

	num *= -1;

	num -= 1;

	while (num)

	{

		bin = char((num&1)+'0') + bin;

		num >>= 1;

	}

	while (bin.size() < length)

		bin = "0" + bin;

	for (int i = 0; i < length; i++)

	{

		if (bin[i] == '0')

			bin[i] = '1';

		else

			bin[i] = '0';

	}

} else {

	while (num)

	{

		bin = char((num&1)+'0') + bin;

		num >>= 1;

	}

	while (bin.size() < length)

		bin = "0" + bin;

}

	string bin2;

	for (int i = 0; i < length; i++)

	{

		bin2 = bin2 + bin[i];

	}

	return bin2;

}

string int2hex(int num, int length)

{

	return bin2hex(int2bin(num, length));

}

string uint2hex(unsigned int num, int length)

{

	return bin2hex(uint2bin(num, length));

}

vector<string> explode(string delimiter, string str)

{

	vector<string> parts;

	string::size_type startPos = 0;

	string::size_type endPos = 0;

	while ((endPos = str.find(delimiter, startPos)) != string::npos)

	{

		try

		{

			parts.push_back(str.substr(startPos, endPos-startPos));

		}

		catch (std::out_of_range& e)

		{

			cout << "DEBUG: explode exception: " << e.what() << "\n";

			cout << "DEBUG: A str=" << str << " :: startPos=" << startPos << " :: endPos=" << endPos << endl;

			continue;

		}

		startPos = endPos+delimiter.length();

	}

	if (startPos < str.length())

	{

		try

		{

			parts.push_back(str.substr(startPos, str.length()-startPos));

		}

		catch (std::out_of_range& e)

		{

			cout << "DEBUG: explode exception: " << e.what() << "\n";

			cout << "DEBUG: B str=" << str << " :: startPos=" << startPos << " :: endPos=" << endPos << endl;

		}

	}

	return parts;

}

string strtoupper(string s)

{

	for (unsigned int n = 0; n < s.size(); n++)

		s[n] = (char)toupper(s[n]);

	return s;

}

string strtolower(string s)

{

	for (unsigned int n = 0; n < s.size(); n++)

		s[n] = (char)tolower(s[n]);

	return s;

}

string trim(string s)

{

	return trim(s, ' ');

}

string trim(const string s, char c)

{

	string result = s;

	while (result[0] == c)

		result.erase(0, 1);

	while (result[result.length()-1] == c)

		result.erase(result.length()-1, 1);

	return result;

}

int stoi(const string s)

{

	istringstream in(s);

	int i;

	in >> i;

	return i;

}

string itos(int i)

{

	ostringstream out;

	out << i;

	return out.str();

}

unsigned int stou(const string s)

{

	istringstream in(s);

	unsigned int i;

	in >> i;

	return i;

}

string utos(unsigned int i)

{

	ostringstream out;

	out << i;

	return out.str();

}

float stof(const string s)

{

	istringstream in(s);

	float f;

	in >> f;

	return f;

}

string ftos(float f)

{

	ostringstream out;

	out << f;

	return out.str();

}

string str_replace(string search, string replace, string str)

{

	vector<string> parts = explode(search, str);

	string result;

	for (int n = 0; n < parts.size(); n++)

	{

		result += parts[n];

		if (n < parts.size()-1)

			result += replace;

	}

	return result;

}

string file_get_contents(string filename)

{

	ifstream srcfile(filename.c_str());

	if (!srcfile.is_open())

	{

		srcfile.close();

		return "";

	}

	string buffer = "";

	string line;

	while (!srcfile.eof())

	{

		getline(srcfile, line);

		if (srcfile.eof())

			break;

		buffer += line + "\n";

	};

	srcfile.close();

	return buffer;

}

bool file_exists(string filename)

{

	ifstream file(filename.c_str());

	if (file.is_open())

	{

		file.close();

		return true;

	}

	return false;

}

string escape(string in)

{

	string out;

	for (int n = 0; n < in.length(); n++)

	{

		switch (in[n])

		{

			case '\r':

				break;

			case '\n':

				out += "\\n";

				break;

			case '\'':

				out += "\\'";

				break;

			case '\\':

				out += "\\\\";

				break;

			case '"':

				out += "\\\"";

				break;

			default:

				out += in[n];

				break;

		}

	}

	return out;

}

string rpad(string in, int length, char c)

{

	while (in.length() < length)

	{

		in += c;

	}

	return in;

}

string lpad(string in, int length, char c)

{

	while (in.length() < length)

	{

		in = c + in;

	}

	return in;

}