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// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 2005 Simon Howard
//
// 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.
//
// DESCRIPTION:
// Miscellaneous.
//
//-----------------------------------------------------------------------------
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
// for mkdir:
#ifdef _WIN32
#include <io.h>
#ifdef _MSC_VER
#include <direct.h>
#endif
#else
#include <sys/stat.h>
#include <sys/types.h>
#endif
#include "doomtype.h"
#include "deh_str.h"
#include "i_swap.h"
#include "i_system.h"
#include "i_video.h"
#include "m_misc.h"
#include "v_video.h"
#include "w_wad.h"
#include "z_zone.h"
//
// Create a directory
//
void M_MakeDirectory(char *path)
{
#ifdef _WIN32
mkdir(path);
#else
mkdir(path, 0755);
#endif
}
// Check if a file exists
boolean M_FileExists(char *filename)
{
FILE *fstream;
fstream = fopen(filename, "r");
if (fstream != NULL)
{
fclose(fstream);
return true;
}
else
{
// If we can't open because the file is a directory, the
// "file" exists at least!
return errno == EISDIR;
}
}
//
// Determine the length of an open file.
//
long M_FileLength(FILE *handle)
{
long savedpos;
long length;
// save the current position in the file
savedpos = ftell(handle);
// jump to the end and find the length
fseek(handle, 0, SEEK_END);
length = ftell(handle);
// go back to the old location
fseek(handle, savedpos, SEEK_SET);
return length;
}
//
// M_WriteFile
//
boolean M_WriteFile(char *name, void *source, int length)
{
FILE *handle;
int count;
handle = fopen(name, "wb");
if (handle == NULL)
return false;
count = fwrite(source, 1, length, handle);
fclose(handle);
if (count < length)
return false;
return true;
}
//
// M_ReadFile
//
int M_ReadFile(char *name, byte **buffer)
{
FILE *handle;
int count, length;
byte *buf;
handle = fopen(name, "rb");
if (handle == NULL)
I_Error ("Couldn't read file %s", name);
// find the size of the file by seeking to the end and
// reading the current position
length = M_FileLength(handle);
buf = Z_Malloc (length, PU_STATIC, NULL);
count = fread(buf, 1, length, handle);
fclose (handle);
if (count < length)
I_Error ("Couldn't read file %s", name);
*buffer = buf;
return length;
}
// Returns the path to a temporary file of the given name, stored
// inside the system temporary directory.
//
// The returned value must be freed with Z_Free after use.
char *M_TempFile(char *s)
{
char *result;
char *tempdir;
#ifdef _WIN32
// Check the TEMP environment variable to find the location.
tempdir = getenv("TEMP");
if (tempdir == NULL)
{
tempdir = ".";
}
#else
// In Unix, just use /tmp.
tempdir = "/tmp";
#endif
result = Z_Malloc(strlen(tempdir) + strlen(s) + 2, PU_STATIC, 0);
sprintf(result, "%s%c%s", tempdir, DIR_SEPARATOR, s);
return result;
}
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