| 1 | /* |
1 | /* |
| 2 | CrossFire, A Multiplayer game for X-windows |
2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
| 3 | |
3 | * |
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4 | * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
| 4 | Copyright (C) 2002 Mark Wedel & Crossfire Development Team |
5 | * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team |
| 5 | Copyright (C) 1992 Frank Tore Johansen |
6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
| 6 | |
7 | * |
| 7 | This program is free software; you can redistribute it and/or modify |
8 | * Deliantra is free software: you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
9 | * it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
10 | * the Free Software Foundation, either version 3 of the License, or |
| 10 | (at your option) any later version. |
11 | * (at your option) any later version. |
| 11 | |
12 | * |
| 12 | This program is distributed in the hope that it will be useful, |
13 | * This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
16 | * GNU General Public License for more details. |
| 16 | |
17 | * |
| 17 | You should have received a copy of the GNU General Public License |
18 | * You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
20 | * |
| 20 | |
21 | * The authors can be reached via e-mail to <support@deliantra.net> |
| 21 | The authors can be reached via e-mail at <crossfire@schmorp.de> |
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| 22 | */ |
22 | */ |
| 23 | |
23 | |
| 24 | /* This file contains various functions that are not really unique for |
24 | /* This file contains various functions that are not really unique for |
| 25 | * crossfire, but rather provides what should be standard functions |
25 | * crossfire, but rather provides what should be standard functions |
| 26 | * for systems that do not have them. In this way, most of the |
26 | * for systems that do not have them. In this way, most of the |
| 27 | * nasty system dependent stuff is contained here, with the program |
27 | * nasty system dependent stuff is contained here, with the program |
| … | |
… | |
| 46 | |
46 | |
| 47 | #include <unistd.h> |
47 | #include <unistd.h> |
| 48 | |
48 | |
| 49 | /* Has to be after above includes so we don't redefine some values */ |
49 | /* Has to be after above includes so we don't redefine some values */ |
| 50 | #include "global.h" |
50 | #include "global.h" |
| 51 | |
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| 52 | static unsigned int curtmp = 0; |
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| 53 | |
51 | |
| 54 | /* This function removes everything in the directory. */ |
52 | /* This function removes everything in the directory. */ |
| 55 | void |
53 | void |
| 56 | remove_directory (const char *path) |
54 | remove_directory (const char *path) |
| 57 | { |
55 | { |
| … | |
… | |
| 125 | } |
123 | } |
| 126 | return (char *) s; |
124 | return (char *) s; |
| 127 | } |
125 | } |
| 128 | |
126 | |
| 129 | /* |
127 | /* |
| 130 | * Based on (n+1)^2 = n^2 + 2n + 1 |
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| 131 | * given that 1^2 = 1, then |
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| 132 | * 2^2 = 1 + (2 + 1) = 1 + 3 = 4 |
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| 133 | * 3^2 = 4 + (4 + 1) = 4 + 5 = 1 + 3 + 5 = 9 |
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| 134 | * 4^2 = 9 + (6 + 1) = 9 + 7 = 1 + 3 + 5 + 7 = 16 |
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| 135 | * ... |
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| 136 | * In other words, a square number can be express as the sum of the |
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| 137 | * series n^2 = 1 + 3 + ... + (2n-1) |
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| 138 | */ |
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| 139 | int |
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| 140 | isqrt (int n) |
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| 141 | { |
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| 142 | int result, sum, prev; |
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| 143 | |
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| 144 | result = 0; |
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| 145 | prev = sum = 1; |
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| 146 | while (sum <= n) |
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| 147 | { |
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| 148 | prev += 2; |
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| 149 | sum += prev; |
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| 150 | ++result; |
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| 151 | } |
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| 152 | return result; |
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| 153 | } |
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| 154 | |
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| 155 | /* |
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| 156 | * returns a char-pointer to a static array, in which a representation |
128 | * returns a char-pointer to a static array, in which a representation |
| 157 | * of the decimal number given will be stored. |
129 | * of the decimal number given will be stored. |
| 158 | */ |
130 | */ |
| 159 | char * |
131 | char * |
| 160 | ltostr10 (signed long n) |
132 | ltostr10 (signed long n) |
| … | |
… | |
| 205 | char buf[MAX_BUF], *cp = buf; |
177 | char buf[MAX_BUF], *cp = buf; |
| 206 | struct stat statbuf; |
178 | struct stat statbuf; |
| 207 | |
179 | |
| 208 | if (!filename || !*filename) |
180 | if (!filename || !*filename) |
| 209 | return; |
181 | return; |
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182 | |
| 210 | strcpy (buf, filename); |
183 | assign (buf, filename); |
| 211 | |
184 | |
| 212 | while ((cp = strchr (cp + 1, (int) '/'))) |
185 | while ((cp = strchr (cp + 1, (int) '/'))) |
| 213 | { |
186 | { |
| 214 | *cp = '\0'; |
187 | *cp = '\0'; |
| 215 | if (stat (buf, &statbuf) || !S_ISDIR (statbuf.st_mode)) |
188 | if (stat (buf, &statbuf) || !S_ISDIR (statbuf.st_mode)) |
