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/* |
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CrossFire, A Multiplayer game for X-windows |
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|
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Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
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Copyright (C) 1992 Frank Tore Johansen |
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|
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This program is free software; you can redistribute it and/or modify |
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it under the terms of the GNU General Public License as published by |
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the Free Software Foundation; either version 2 of the License, or |
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(at your option) any later version. |
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|
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This program is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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GNU General Public License for more details. |
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|
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You should have received a copy of the GNU General Public License |
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along with this program; if not, write to the Free Software |
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
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|
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The authors can be reached via e-mail at <crossfire@schmorp.de> |
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*/ |
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|
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/* This file contains various functions that are not really unique for |
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* crossfire, but rather provides what should be standard functions |
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* for systems that do not have them. In this way, most of the |
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* nasty system dependent stuff is contained here, with the program |
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* calling these functions. |
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*/ |
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|
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|
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#include <ctype.h> |
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#include <sys/stat.h> |
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#include <sys/wait.h> |
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|
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#include <sys/param.h> |
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#include <stdio.h> |
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|
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/* Need to pull in the HAVE_... values somehow */ |
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|
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#include <autoconf.h> |
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|
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|
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#ifdef HAVE_STDLIB_H |
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# include <stdlib.h> |
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#endif |
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|
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#ifdef HAVE_UNISTD_H |
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# include <unistd.h> |
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#endif |
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|
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#include <stdarg.h> |
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|
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/* Has to be after above includes so we don't redefine some values */ |
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#include "global.h" |
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|
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static unsigned int curtmp = 0; |
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|
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/***************************************************************************** |
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* File related functions |
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****************************************************************************/ |
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|
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/* |
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* A replacement for the tempnam() function since it's not defined |
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* at some unix variants. |
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*/ |
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|
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char * |
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tempnam_local (const char *dir, const char *pfx) |
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{ |
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char *name; |
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pid_t pid = getpid (); |
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|
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/* HURD does not have a hard limit, but we do */ |
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#ifndef MAXPATHLEN |
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# define MAXPATHLEN 4096 |
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#endif |
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|
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if (!(name = (char *) malloc (MAXPATHLEN))) |
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return (NULL); |
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|
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if (!pfx) |
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pfx = "cftmp."; |
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|
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/* This is a pretty simple method - put the pid as a hex digit and |
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* just keep incrementing the last digit. Check to see if the file |
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* already exists - if so, we'll just keep looking - eventually we should |
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* find one that is free. |
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*/ |
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if (dir != NULL) |
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{ |
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do |
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{ |
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#ifdef HAVE_SNPRINTF |
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(void) snprintf (name, MAXPATHLEN, "%s/%s%hx.%d", dir, pfx, pid, curtmp); |
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#else |
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(void) sprintf (name, "%s/%s%hx%d", dir, pfx, pid, curtmp); |
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#endif |
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curtmp++; |
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} |
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while (access (name, F_OK) != -1); |
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return (name); |
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} |
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return (NULL); |
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} |
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|
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|
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|
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/* This function removes everything in the directory. */ |
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void |
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remove_directory (const char *path) |
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{ |
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DIR *dirp; |
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char buf[MAX_BUF]; |
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struct stat statbuf; |
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int status; |
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|
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if ((dirp = opendir (path)) != NULL) |
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{ |
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struct dirent *de; |
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|
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for (de = readdir (dirp); de; de = readdir (dirp)) |
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{ |
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/* Don't remove '.' or '..' In theory we should do a better |
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* check for .., but the directories we are removing are fairly |
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* limited and should not have dot files in them. |
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*/ |
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if (de->d_name[0] == '.') |
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continue; |
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|
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/* Linux actually has a type field in the dirent structure, |
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* but that is not portable - stat should be portable |
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*/ |
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status = stat (de->d_name, &statbuf); |
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if ((status != -1) && (S_ISDIR (statbuf.st_mode))) |
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{ |
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sprintf (buf, "%s/%s", path, de->d_name); |
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remove_directory (buf); |
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continue; |
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} |
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sprintf (buf, "%s/%s", path, de->d_name); |
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if (unlink (buf)) |
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{ |
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LOG (llevError, "Unable to remove directory %s\n", path); |
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} |
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} |
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closedir (dirp); |
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} |
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if (rmdir (path)) |
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{ |
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LOG (llevError, "Unable to remove directory %s\n", path); |
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} |
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} |
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|
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#if defined(sgi) |
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|
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# include <stdio.h> |
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# include <stdlib.h> |
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# include <string.h> |
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|
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# define popen fixed_popen |
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|
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FILE * |
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popen_local (const char *command, const char *type) |
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{ |
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int fd[2]; |
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int pd; |
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FILE *ret; |
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|
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if (!strcmp (type, "r")) |
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pd = STDOUT_FILENO; |
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else if (!strcmp (type, "w")) |
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pd = STDIN_FILENO; |
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else |
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return NULL; |
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|
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if (pipe (fd) != -1) |
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{ |
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switch (fork ()) |
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{ |
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case -1: |
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close (fd[0]); |
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close (fd[1]); |
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break; |
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case 0: |
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close (fd[0]); |
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if ((fd[1] == pd) || (dup2 (fd[1], pd) == pd)) |
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{ |
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if (fd[1] != pd) |
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{ |
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close (fd[1]); |
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} |
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execl ("/bin/sh", "sh", "-c", command, NULL); |
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close (pd); |
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} |
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_exit (1); |
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break; |
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default: |
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close (fd[1]); |
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if (ret = fdopen (fd[0], type)) |
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{ |
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return ret; |
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} |
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close (fd[0]); |
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break; |
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} |
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} |
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return NULL; |
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} |
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|
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#endif /* defined(sgi) */ |
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|
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|
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/***************************************************************************** |
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* String related function |
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****************************************************************************/ |
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|
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/* |
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* A replacement of strdup(), since it's not defined at some |
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* unix variants. |
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*/ |
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char * |
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strdup_local (const char *str) |
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{ |
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char *c = (char *) malloc (sizeof (char) * (strlen (str) + 1)); |
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|
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strcpy (c, str); |
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return c; |
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} |
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|
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|
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#define DIGIT(x) (isdigit(x) ? (x) - '0' : \ |
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islower (x) ? (x) + 10 - 'a' : (x) + 10 - 'A') |
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#define MBASE ('z' - 'a' + 1 + 10) |
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|
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/* This seems to be lacking on some system */ |
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#if !defined(HAVE_STRNCASECMP) |
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int |
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strncasecmp (const char *s1, const char *s2, int n) |
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{ |
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register int c1, c2; |
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|
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while (*s1 && *s2 && n) |
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{ |
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c1 = tolower (*s1); |
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c2 = tolower (*s2); |
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if (c1 != c2) |
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return (c1 - c2); |
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s1++; |
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s2++; |
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n--; |
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} |
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if (!n) |
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return (0); |
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return (int) (*s1 - *s2); |
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} |
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#endif |
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|
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#if !defined(HAVE_STRCASECMP) |
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int |
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strcasecmp (const char *s1, const char *s2) |
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{ |
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register int c1, c2; |
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|
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while (*s1 && *s2) |
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{ |
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c1 = tolower (*s1); |
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c2 = tolower (*s2); |
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if (c1 != c2) |
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return (c1 - c2); |
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s1++; |
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s2++; |
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} |
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if (*s1 == '\0' && *s2 == '\0') |
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return 0; |
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return (int) (*s1 - *s2); |
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} |
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#endif |
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|
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char * |
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strcasestr_local (const char *s, const char *find) |
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{ |
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char c, sc; |
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size_t len; |
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|
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if ((c = *find++) != 0) |
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{ |
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c = tolower (c); |
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len = strlen (find); |
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do |
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{ |
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do |
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{ |
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if ((sc = *s++) == 0) |
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return NULL; |
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} |
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while (tolower (sc) != c); |
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} |
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while (strncasecmp (s, find, len) != 0); |
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s--; |
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} |
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return (char *) s; |
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} |
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|
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#if !defined(HAVE_SNPRINTF) |
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|
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int |
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snprintf (char *dest, int max, const char *format, ...) |
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{ |
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va_list var; |
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int ret; |
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|
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va_start (var, format); |
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ret = vsprintf (dest, format, var); |
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va_end (var); |
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if (ret > max) |
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abort (); |
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|
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return ret; |
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} |
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#endif |
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|
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|
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/* |
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* Based on (n+1)^2 = n^2 + 2n + 1 |
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* given that 1^2 = 1, then |
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* 2^2 = 1 + (2 + 1) = 1 + 3 = 4 |
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* 3^2 = 4 + (4 + 1) = 4 + 5 = 1 + 3 + 5 = 9 |
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* 4^2 = 9 + (6 + 1) = 9 + 7 = 1 + 3 + 5 + 7 = 16 |
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* ... |
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* In other words, a square number can be express as the sum of the |
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* series n^2 = 1 + 3 + ... + (2n-1) |
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*/ |
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int |
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isqrt (int n) |
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{ |
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int result, sum, prev; |
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|
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result = 0; |
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prev = sum = 1; |
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while (sum <= n) |
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{ |
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prev += 2; |
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sum += prev; |
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++result; |
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} |
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return result; |
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} |
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|
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|
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/* |
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* returns a char-pointer to a static array, in which a representation |
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* of the decimal number given will be stored. |
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*/ |
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|
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char * |
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ltostr10 (signed long n) |
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{ |
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static char buf[12]; /* maximum size is n=-2 billion, i.e. 11 characters+1 |
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character for the trailing nul character */ |
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snprintf (buf, sizeof (buf), "%ld", n); |
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return buf; |
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} |
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|
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char * |
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doubletostr10 (double v) |
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{ |
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static char tbuf[200]; |
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|
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sprintf (tbuf, "%f", v); |
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return tbuf; |
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} |
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|
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/** |
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* open_and_uncompress() first searches for the original filename. If it exist, |
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* then it opens it and returns the file-pointer. |
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*/ |
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FILE * |
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open_and_uncompress (const char *name, int flag, int *compressed) |
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{ |
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*compressed = 0; |
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return fopen (name, "r"); |
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} |
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|
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/* |
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* See open_and_uncompress(). |
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*/ |
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|
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void |
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close_and_delete (FILE * fp, int compressed) |
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{ |
| 392 |
fclose (fp); |
| 393 |
} |
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|
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/* |
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* If any directories in the given path doesn't exist, they are created. |
| 397 |
*/ |
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|
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void |
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make_path_to_file (char *filename) |
| 401 |
{ |
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char buf[MAX_BUF], *cp = buf; |
| 403 |
struct stat statbuf; |
| 404 |
|
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if (!filename || !*filename) |
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return; |
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strcpy (buf, filename); |
| 408 |
|
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while ((cp = strchr (cp + 1, (int) '/'))) |
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{ |
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*cp = '\0'; |
| 412 |
if (stat (buf, &statbuf) || !S_ISDIR (statbuf.st_mode)) |
| 413 |
{ |
| 414 |
if (mkdir (buf, SAVE_DIR_MODE)) |
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{ |
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LOG (llevError, "Cannot mkdir %s: %s\n", buf, strerror (errno)); |
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return; |
| 418 |
} |
| 419 |
} |
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*cp = '/'; |
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} |
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} |
