ref: 2933ccf02c2d0f34cf018599cacec5121e6ca595
dir: /src/m_misc.c/
// Emacs style mode select -*- C++ -*-
//-----------------------------------------------------------------------------
//
// Copyright(C) 1993-1996 Id Software, Inc.
// Copyright(C) 1993-2008 Raven Software
// 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 <string.h>
#include <ctype.h>
#include <errno.h>
#ifdef _WIN32
#define WIN32_LEAN_AND_MEAN
#include <windows.h>
#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;
}
boolean M_StrToInt(const char *str, int *result)
{
return sscanf(str, " 0x%x", result) == 1
|| sscanf(str, " 0X%x", result) == 1
|| sscanf(str, " 0%o", result) == 1
|| sscanf(str, " %d", result) == 1;
}
void M_ExtractFileBase(char *path, char *dest)
{
char *src;
char *filename;
int length;
src = path + strlen(path) - 1;
// back up until a \ or the start
while (src != path && *(src - 1) != DIR_SEPARATOR)
{
src--;
}
filename = src;
// Copy up to eight characters
// Note: Vanilla Doom exits with an error if a filename is specified
// with a base of more than eight characters. To remove the 8.3
// filename limit, instead we simply truncate the name.
length = 0;
memset(dest, 0, 8);
while (*src != '\0' && *src != '.')
{
if (length >= 8)
{
printf("Warning: Truncated '%s' lump name to '%.8s'.\n",
filename, dest);
break;
}
dest[length++] = toupper((int)*src++);
}
}
//---------------------------------------------------------------------------
//
// PROC M_ForceUppercase
//
// Change string to uppercase.
//
//---------------------------------------------------------------------------
void M_ForceUppercase(char *text)
{
char *p;
for (p = text; *p != '\0'; ++p)
{
*p = toupper(*p);
}
}
//
// M_StrCaseStr
//
// Case-insensitive version of strstr()
//
char *M_StrCaseStr(char *haystack, char *needle)
{
unsigned int haystack_len;
unsigned int needle_len;
unsigned int len;
unsigned int i;
haystack_len = strlen(haystack);
needle_len = strlen(needle);
if (haystack_len < needle_len)
{
return NULL;
}
len = haystack_len - needle_len;
for (i = 0; i <= len; ++i)
{
if (!strncasecmp(haystack + i, needle, needle_len))
{
return haystack + i;
}
}
return NULL;
}
//
// String replace function.
// Returns a Z_Malloc()ed string.
//
char *M_StringReplace(char *haystack, char *needle, char *replacement)
{
char *result, *p, *dst;
size_t needle_len = strlen(needle);
int n;
// Count number of occurrences of 'p':
for (p = haystack, n = 0;; ++n)
{
p = strstr(p, needle);
if (p == NULL)
{
break;
}
p += needle_len;
}
// Construct new string.
result = Z_Malloc(strlen(haystack)
+ (strlen(replacement) - needle_len) * n
+ 1,
PU_STATIC, NULL);
dst = result;
p = haystack;
while (*p != '\0')
{
if (!strncmp(p, needle, needle_len))
{
strcpy(dst, replacement);
dst += strlen(replacement);
p += needle_len;
}
else
{
*dst = *p;
++dst;
++p;
}
}
*dst = '\0';
return result;
}
#ifdef _WIN32
char *M_OEMToUTF8(const char *oem)
{
unsigned int len = strlen(oem) + 1;
wchar_t *tmp;
char *result;
tmp = malloc(len * sizeof(wchar_t));
MultiByteToWideChar(CP_OEMCP, 0, oem, len, tmp, len);
result = malloc(len * 4);
WideCharToMultiByte(CP_UTF8, 0, tmp, len, result, len * 4, NULL, NULL);
free(tmp);
return result;
}
#endif