/*
 * Copyright (c) <2008 - 2012>, University of Washington, Simon Fraser University
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
 *
 * Redistributions of source code must retain the above copyright notice, this list
 * of conditions and the following disclaimer.
 * - Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or other
 *   materials provided with the distribution.
 * - Neither the names of the University of Washington, Simon Fraser University, 
 *   nor the names of its contributors may be
 *   used to endorse or promote products derived from this software without specific
 *   prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

/*
  Authors: 
	Farhad Hormozdiari
        Faraz Hach
	Can Alkan
  Emails: 
	farhadh AT uw DOT edu
	fhach AT cs DOT sfu DOT ca
        calkan AT uw DOT edu
 */



#include <stdio.h>
#include <stdlib.h>
#include <sys/time.h>
#include <zlib.h>
#include <string.h>
#include "Common.h"


unsigned short 			SEQ_LENGTH = 0;
long long				memUsage = 0;
/**********************************************/
FILE *fileOpen(char *fileName, char *mode)
{
	FILE *fp;
	fp = fopen (fileName, mode);
	if (fp == NULL)
	{
		fprintf(stdout, "Error: Cannot Open the file %s\n", fileName);
		fflush(stdout);
		exit(0);
	}
	return fp;
}
/**********************************************/
gzFile fileOpenGZ(char *fileName, char *mode)
{
	gzFile gzfp;
	gzfp = gzopen (fileName, mode);
	if (gzfp == Z_NULL)
	{
		fprintf(stdout, "Error: Cannot Open the file %s\n", fileName);
		fflush(stdout);
		exit(0);
	}
	return gzfp;
}
/**********************************************/
double getTime(void)
{
	struct timeval t;
	gettimeofday(&t, NULL);
	return t.tv_sec+t.tv_usec/1000000.0;
}

/**********************************************/
char reverseCompleteChar(char c)
{
	char ret;
	switch (c)
	{
		case 'A': 
					ret = 'T';
					break;
		case 'T':
					ret = 'A';
					break;
		case 'C':	
					ret = 'G';
					break;
		case 'G':
					ret = 'C';
					break;
		default:
					ret = 'N';
					break;
	}
	return ret;
}
/**********************************************/
void reverseComplete (char *seq, char *rcSeq , int length)
{
	int i;
	for (i=0; i<length; i++)
	{
		rcSeq[i]=reverseCompleteChar (seq[length-1-i]) ;
	}
}
/**********************************************/
void * getMem(size_t size)
{
        void *ret;
	ret = malloc(size);
	if (ret == NULL){
	  fprintf(stderr, "Cannot allocate memory. Currently addressed memory = %0.2f MB, requested memory = %0.2f MB.\nCheck the available main memory, and if you have user limits (ulimit -v).\n", getMemUsage(), (double)size);
	  exit(0);
	}
	memUsage+=size;
	return ret;
}
/**********************************************/
void freeMem(void *ptr, size_t size)
{
	memUsage-=size;
	free(ptr);
}
/**********************************************/
double getMemUsage()
{
	return memUsage/1048576.0;
}
/**********************************************/
void reverse (char *seq, char *rcSeq , int length)
{
	int i;
	int l = length;
	if(l != strlen(seq))
		l = strlen(seq);
	for (i=0; i<l; i++)
	{
		rcSeq[i]=seq[l-1-i] ;
	}
	rcSeq[l] = '\0';
}
/**********************************************/
void stripPath(char *full, char **path, char **fileName)
{
	int i;
	int pos = -1;

	for (i=strlen(full)-1; i>=0; i--)
	{
		if (full[i]=='/')
		{
			pos = i;
			break;
		}

	}

	if (pos != -1)
	{
		sprintf(*fileName, "%s%c", (full+pos+1), '\0');
		full[pos+1]='\0';
		sprintf(*path,"%s%c", full, '\0');
	}
	else
	{
		sprintf(*fileName, "%s%c", full, '\0');
		sprintf(*path,"%c", '\0');
	}
}