/* ioapi.c -- IO base function header for compress/uncompress .zip

   files using zlib + zip or unzip API

   Version 1.01e, February 12th, 2005

   Copyright (C) 1998-2005 Gilles Vollant    

*/

#include "common.h"

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

//When OE- zlib is used, change this to zlib.h

#ifdef _USE_OE_ZLIB_

#include <zlib.h>

#else

#include <ezlib.h>

#endif

#include "ioapi.h"

#ifndef SEEK_CUR

#define SEEK_CUR    1

#endif

#ifndef SEEK_END

#define SEEK_END    2

#endif

#ifndef SEEK_SET

#define SEEK_SET    0

#endif

voidpf ZCALLBACK fopen_file_func (voidpf opaque, const char* filename, int mode)

{

    FILE* file = NULL;

    const char* mode_fopen = NULL;

    if (opaque == NULL) { /* do nothing. to avoid warnings */ };

    if ((mode & ZLIB_FILEFUNC_MODE_READWRITEFILTER)==ZLIB_FILEFUNC_MODE_READ)

        mode_fopen = "rb";

    else

    if (mode & ZLIB_FILEFUNC_MODE_EXISTING)

        mode_fopen = "r+b";

    else

    if (mode & ZLIB_FILEFUNC_MODE_CREATE)

        mode_fopen = "wb";

    if ((filename!=NULL) && (mode_fopen != NULL)) {

    	//printf("IOAPI: Opening file %s\n", filename);

    	file = fopen(filename, mode_fopen);

    }        

    return file;

}

uLong ZCALLBACK fread_file_func (voidpf opaque, voidpf stream, void* buf, uLong size)

{

    uLong ret;

    if (opaque == NULL) { /* do nothing. to avoid warnings */ };

    ret = (uLong)fread(buf, 1, (size_t)size, (FILE *)stream);

    return ret;

}

uLong ZCALLBACK fwrite_file_func (voidpf opaque, voidpf stream, const void* buf, uLong size)

{

    uLong ret;

    if (opaque == NULL) { /* do nothing. to avoid warnings */ };

    ret = (uLong)fwrite(buf, 1, (size_t)size, (FILE *)stream);

    return ret;

}

long ZCALLBACK ftell_file_func (voidpf opaque, voidpf stream)

{

    long ret;

    if (opaque == NULL) { /* do nothing. to avoid warnings */ };

    ret = ftell((FILE *)stream);

    return ret;

}

long ZCALLBACK fseek_file_func (voidpf opaque, voidpf stream, uLong offset, int origin)

{

    int fseek_origin=0;

    long ret;

    if (opaque == NULL) { /* do nothing. to avoid warnings */ };

    switch (origin)

    {

    case ZLIB_FILEFUNC_SEEK_CUR :

        fseek_origin = SEEK_CUR;

        break;

    case ZLIB_FILEFUNC_SEEK_END :

        fseek_origin = SEEK_END;

        break;

    case ZLIB_FILEFUNC_SEEK_SET :

        fseek_origin = SEEK_SET;

        break;

    default: return -1;

    }

    ret = 0;

    fseek((FILE *)stream, offset, fseek_origin);

    return ret;

}

int ZCALLBACK fclose_file_func (voidpf opaque, voidpf stream)

{

    int ret;

    if (opaque == NULL) { /* do nothing. to avoid warnings */ };

    ret = fclose((FILE *)stream);

    return ret;

}

int ZCALLBACK ferror_file_func (voidpf opaque, voidpf stream)

{

    int ret;

    if (opaque == NULL) { /* do nothing. to avoid warnings */ };

    ret = ferror((FILE *)stream);

    return ret;

}

void fill_fopen_filefunc (zlib_filefunc_def* pzlib_filefunc_def)

{

    pzlib_filefunc_def->zopen_file = fopen_file_func;

    pzlib_filefunc_def->zread_file = fread_file_func;

    pzlib_filefunc_def->zwrite_file = fwrite_file_func;

    pzlib_filefunc_def->ztell_file = ftell_file_func;

    pzlib_filefunc_def->zseek_file = fseek_file_func;

    pzlib_filefunc_def->zclose_file = fclose_file_func;

    pzlib_filefunc_def->zerror_file = ferror_file_func;

    pzlib_filefunc_def->opaque = NULL;

}

//get the value for the given var from the env list...

char* get_value(char* var, char** env_list)

{

	char* pwd = NULL;

	size_t idx=0;

	if(!var || !env_list)

		return NULL;

	while(env_list[idx])

		{

		char* temp=env_list[idx];

		if(strstr(temp, var))

			{

			while(*temp!= '='&& temp++) {};			

			if(temp++)

				pwd=temp;

			break;

			}

		idx++;	

		}	

	return pwd; 	

}