ref: aa35a71bd05536f82ce23887f7e84decc7f850a7
dir: /src/m_misc.c/
// 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 "doomdef.h" #include "doomstat.h" #include "deh_main.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; }