/*

Minecraft Dynmap plugin for Miranda Instant Messenger
_____________________________________________

Copyright © 2015 Robert Pösel

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/>.

*/

#include "stdafx.h"

std::string utils::url::encode(const std::string &s)
{
	return (char*)ptrA(mir_urlEncode(s.c_str()));
}

void utils::text::replace_first(std::string* data, const std::string &from, const std::string &to)
{
	std::string::size_type position = 0;

	if ((position = data->find(from, position)) != std::string::npos)
	{
		data->replace(position, from.size(), to);
		position++;
	}
}

void utils::text::replace_all(std::string* data, const std::string &from, const std::string &to)
{
	std::string::size_type position = 0;

	while ((position = data->find(from, position)) != std::string::npos)
	{
		data->replace(position, from.size(), to);
		position++;
	}
}

void utils::text::treplace_all(std::tstring* data, const std::tstring &from, const std::tstring &to)
{
	std::tstring::size_type position = 0;

	while ((position = data->find(from, position)) != std::tstring::npos)
	{
		data->replace(position, from.size(), to);
		position++;
	}
}

std::string utils::text::special_expressions_decode(std::string data)
{
	utils::text::replace_all(&data, "\\r", "\r");
	utils::text::replace_all(&data, "\\n", "\n");
	utils::text::replace_all(&data, "\\\"", "\"");
	utils::text::replace_all(&data, "\\\\", "\\");

	return data;
}

std::string utils::text::slashu_to_utf8(const std::string &data)
{
	std::string new_string = "";

	for (std::string::size_type i = 0; i < data.length(); i++)
	{
		if (data.at(i) == '\\' && (i+1) < data.length() && data.at(i+1) == 'u')
		{
			unsigned int udn = strtol(data.substr(i + 2, 4).c_str(), NULL, 16);

			if (udn >= 128 && udn <= 2047)
			{ // U+0080 .. U+07FF
				new_string += (char)(192 + (udn / 64));
				new_string += (char)(128 + (udn % 64));
			} 
			else if (udn >= 2048 && udn <= 65535)
			{ // U+0800 .. U+FFFF
				new_string += (char)(224 + (udn / 4096));
				new_string += (char)(128 + ((udn / 64) % 64));
				new_string += (char)(128 + (udn % 64 ));
			}
			else if (udn <= 127)
			{ // U+0000 .. U+007F (should not appear)
				new_string += (char)udn;
			}

			i += 5;
			continue;
		}

		new_string += data.at(i);
	}

	return new_string;
}

std::string utils::text::trim(const std::string &data)
{
	std::string spaces = " \t\r\n";
	std::string::size_type begin = data.find_first_not_of(spaces);
	std::string::size_type end = data.find_last_not_of(spaces) + 1;

	return (begin != std::string::npos) ? data.substr(begin, end - begin) : "";
}

time_t utils::time::from_string(const std::string &data)
{
	long long timestamp = _strtoi64(data.c_str(), NULL, 10);

	// If it is milli timestamp
	if (timestamp > 100000000000)
		timestamp /= 1000;

	// If conversion fails, use local time?
	//if (!timestamp)
	//	timestamp = ::time(NULL);

	return (time_t)timestamp;
}