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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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/* 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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#include <cstdio> |
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#include <cstdlib> |
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#include <cstdarg> |
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|
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#include <cctype> |
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|
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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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|
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#include <unistd.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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/* 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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#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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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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/* |
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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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* 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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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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{ |
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fclose (fp); |
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} |
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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. |
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*/ |
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|
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void |
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make_path_to_file (char *filename) |
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{ |
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char buf[MAX_BUF], *cp = buf; |
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struct stat statbuf; |
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|
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if (!filename || !*filename) |
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return; |
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strcpy (buf, filename); |
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|
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while ((cp = strchr (cp + 1, (int) '/'))) |
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{ |
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*cp = '\0'; |
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if (stat (buf, &statbuf) || !S_ISDIR (statbuf.st_mode)) |
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{ |
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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; |
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} |
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} |
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*cp = '/'; |
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} |
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} |
