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/*

 * Copyright (C) 2015 by Andreas Theofilu. All rights reserved!

 *

 * All rights reserved. No warranty, explicit or implicit, provided.

 *

 * NOTICE:  All information contained herein is, and remains

 * the property of Andreas Theofilu and his suppliers, if any.

 * The intellectual and technical concepts contained

 * herein are proprietary to Andreas Theofilu and its suppliers and

 * may be covered by European and Foreign Patents, patents in process,

 * and are protected by trade secret or copyright law.

 * Dissemination of this information or reproduction of this material

 * is strictly forbidden unless prior written permission is obtained

 * from Andreas Theofilu.

 * 

 * Author: Andreas Theofilu <andreas@theosys.at>

 */

#include <iostream>

#include <fstream>

#include <string>

#include <cstring>

#include <cctype>

#include <cstddef>

#include <ctime>

#include <cstdio>

#include <cstdlib>

#include <algorithm>

#include <functional>

#include <cctype>

#include <locale>

#include <unistd.h>

#include <syslog.h>

#include <sys/stat.h>

#include <sys/types.h>

#include <sys/utsname.h>

#include <fcntl.h>

#include "helper.h"

using namespace std;

helper::helper()

{

	strcpy(pname, "this");

	dbg = true;

}

char *helper::readLine(int fd, char *buf, int bufLen)

{

	int i, end;

	char ch, *p;

	if (fd <= 0)

		return NULL;

	i = end = 0;

	p = buf;

	while (read(fd, &ch, 1) > 0)

	{

		end = 1;

		if (ch == 0x0a)

		{

			*p = 0;

			return buf;

		}

		if (ch == 0x0d)	// ignore this!

			continue;

		if (i < (bufLen - 1))

		{

			*p = ch;

			p++;

			i++;

		}

	}

	*p = 0;

	if (end)

		return buf;

	else

		return NULL;

}

char *helper::trim(char *str)

{

char *p1, *p2, *p;

	if (!str)

		return NULL;

	p = str;

	p1 = p2 = NULL;

	while (*p)

	{

		if (!p1 && *p != ' ')

		{

			p1 = p;

			break;

		}

		p++;

	}

	p2 = str + (std::char_traits<char>::length(str) - 1);

	while (p2 > str && *p2 == ' ')

		p2--;

	if (p2)

		*(p2+1) = 0;

	if (p1)

	{

		std::string buf = std::string(p1);

		strcpy(str, buf.c_str());

	}

	return str;

}

string helper::trim (string str)

{

	if (str.empty())

		return str;

	str.erase(str.begin(), std::find_if(str.begin(), str.end(), std::not1(std::ptr_fun<int, int>(std::isspace))));

	str.erase(std::find_if(str.rbegin(), str.rend(), std::not1(std::ptr_fun<int, int>(std::isspace))).base(), str.end());

	return str;

}

int helper::compare(char *str1, char *str2)

{

	int len = std::char_traits<char>::length(str1);

	while (len)

	{

		if (*str1 && *str2 && *str1 == *str2)

		{

			str1++;

			str2++;

		}

		else

		{

			if (*str1 > *str2)

				return 1;

			else

				return -1;

		}

		len--;

	}

	return 0;

}

int helper::compcase(const char *str1, const char *str2)

{

	int len = std::char_traits<char>::length(str1);

//	debug("compcase: len=" + itostring(len) + ",str1=" + std::string(str1) + ",str2=" + std::string(str2));

	while (len)

	{

		if (*str1 && *str2 && std::tolower(*str1) == std::tolower(*str2))

		{

			str1++;

			str2++;

		}

		else

		{

			if (std::tolower(*str1) > std::tolower(*str2))

				return 1;

			else

				return -1;

		}

		len--;

	}

	return 0;

}

int helper::compcase (string str1, string str2)

{

string s1 = str1;

string s2 = str2;

	if (str1.empty())

		return -1;

	else if (str2.empty())

		return 1;

	transform(s1.begin(), s1.end(), s1.begin(), ::tolower);

	transform(s2.begin(), s2.end(), s2.begin(), ::tolower);

	return s1.compare(s2);

}

char* helper::findc (char* str, int len, char c)

{

	if (str == NULL || *str == 0 || !len)

		return NULL;

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

	{

		if (*(str+i) == c)

			return str+i;

	}

	return NULL;

}

int helper::findc (string str, char c)

{

	return str.find(c);

}

void helper::setPName(char *name)

{

	if (name == NULL || std::char_traits<char>::length(name) < 1)

		return;

	strncpy(pname, name, sizeof(pname) - 1);

}

string helper::itostring (int i)

{

	return ToString(i);

}

char* helper::assign (string str)

{

char *p;

int len;

	if (str.empty())

		return NULL;

	len = strlen(str.c_str());

	p = new char[len+1];

	memset(p, 0, len+1);

	strncpy(p, str.c_str(), len);

	return p;

}

bool helper::isArm()

{

struct utsname uts;

std::string str;

	if (uname(&uts) == -1)

	{

		syslog(LOG_DAEMON, "Error getting architecture!");

		return false;

	}

	if (compcase(uts.machine, "armv5tel") == 0)

		return true;

	str = std::string(uts.machine);

	if (str.find("arm") != std::string::npos || str.find("ARM") != std::string::npos)

		return true;

	return false;

}

void helper::debug(std::string msg)

{

	if (!dbg || msg.empty())

		return;

#ifdef TRACE

	if (!isArm())

#endif

		syslog(LOG_DEBUG, "%s: %s", pname, msg.c_str());

#ifdef TRACE

	else

	{

	std::ofstream df;

	time_t t = time(0);

	char *ct;

	int len;

	struct tm *tinfo = localtime(&t);

		df.open("/var/log/prtg_mini.log", std::ios::app);

		ct = ctime(&t);

		len = strlen(ct);

		*(ct + (len-1)) = 0;

		df << ct << ": " << msg << std::endl;

		df.close();

	}

#endif

}