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Comparing deliantra/server/include/shstr.h (file contents):
Revision 1.32 by root, Thu Jan 1 20:49:48 2009 UTC vs.
Revision 1.45 by root, Sat Nov 17 23:40:01 2018 UTC

1/* 1/*
2 * This file is part of Deliantra, the Roguelike Realtime MMORPG. 2 * This file is part of Deliantra, the Roguelike Realtime MMORPG.
3 * 3 *
4 * Copyright (©) 2017,2018 Marc Alexander Lehmann / the Deliantra team
4 * Copyright (©) 2005,2006,2007,2008 Marc Alexander Lehmann / Robin Redeker / the Deliantra team 5 * Copyright (©) 2005,2006,2007,2008,2009,2010,2011,2012,2013,2014,2015,2016 Marc Alexander Lehmann / Robin Redeker / the Deliantra team
5 * 6 *
6 * Deliantra is free software: you can redistribute it and/or modify 7 * Deliantra is free software: you can redistribute it and/or modify it under
7 * it under the terms of the GNU General Public License as published by 8 * the terms of the Affero GNU General Public License as published by the
8 * the Free Software Foundation, either version 3 of the License, or 9 * Free Software Foundation, either version 3 of the License, or (at your
9 * (at your option) any later version. 10 * option) any later version.
10 * 11 *
11 * This program is distributed in the hope that it will be useful, 12 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details. 15 * GNU General Public License for more details.
15 * 16 *
16 * You should have received a copy of the GNU General Public License 17 * You should have received a copy of the Affero GNU General Public License
17 * along with this program. If not, see <http://www.gnu.org/licenses/>. 18 * and the GNU General Public License along with this program. If not, see
19 * <http://www.gnu.org/licenses/>.
18 * 20 *
19 * The authors can be reached via e-mail to <support@deliantra.net> 21 * The authors can be reached via e-mail to <support@deliantra.net>
20 */ 22 */
21 23
22#ifndef SHSTR_H__ 24#ifndef SHSTR_H__
23#define SHSTR_H__ 25#define SHSTR_H__
… …
32extern int buf_overflow (const char *buf1, const char *buf2, int bufsize); 34extern int buf_overflow (const char *buf1, const char *buf2, int bufsize);
33 35
34template<int size> 36template<int size>
35struct shstr_vec 37struct shstr_vec
36{ 38{
39 uint32_t hash;
37 uint32_t len; 40 uint32_t len;
38 uint32_t refcnt; 41 uint32_t refcnt;
42 // pointer points here
39 char string[size]; 43 char string [size];
40}; 44};
41 45
42// this class is a non-refcounted shared string 46// this class is a non-refcounted shared string
43// it cannot be used to create or store shared strings, but 47// it cannot be used to create or store shared strings, but
44// it can be used to apss shared strings around, i.e. as function arguments 48// it can be used to pass shared strings around, i.e. as function arguments
45// or return values. their lifetime must not span a gc () call, i.e. 49// or return values. their lifetime must not span a gc () call, i.e.
46// they are only valid as temporary values within the same server tick. 50// they are only valid as temporary values within the same server tick.
47struct shstr_tmp 51struct shstr_tmp
48{ 52{
49 static shstr_vec<sizeof ("(null)")> nullvec; 53 static shstr_vec<sizeof ("(null)")> nullvec;
50 static const char *null () { return nullvec.string; } // this is the null pointer value 54 static const char *null () { return nullvec.string; } // this is the null pointer value
51 55
52 const char *s; 56 const char *s;
53 57
58 static unsigned int &hash (const char *s)
59 {
60 return *((unsigned int *)s - 3);
61 }
62
63 int hash () const
64 {
65 return hash (s);
66 }
67
54 static unsigned int &length (const char *s) 68 static unsigned int &length (const char *s)
55 { 69 {
56 return *((unsigned int *)s - 2); 70 return *((unsigned int *)s - 2);
57 } 71 }
58 72
… …
71 } 85 }
72 86
73 // returns true if the substring is contained in the shstr 87 // returns true if the substring is contained in the shstr
74 // if the shstr is 0, then this always returns false. 88 // if the shstr is 0, then this always returns false.
75 // the shstr is (theoretically) treated as a comma/colon/space etc. separated list. 89 // the shstr is (theoretically) treated as a comma/colon/space etc. separated list.
76 bool contains (const char *substring) const 90 bool contains (const char *substring) const;
77 {
78 return s != null () && strstr (s, substring);
79 }
80 91
81 //TODO: case sensitive should be eradicated 92 //TODO: case sensitive should be eradicated
82 bool eq_nc (const char *otherstring) const 93 bool eq_nc (const char *otherstring) const
83 { 94 {
84 return !strcasecmp (s, otherstring); 95 return !strcasecmp (s, otherstring);
… …
127inline int strlen (shstr_tmp sh) 138inline int strlen (shstr_tmp sh)
128{ 139{
129 return sh.length (); 140 return sh.length ();
130} 141}
131 142
132static std::ostream &operator <<(std::ostream &o, shstr_tmp sh) 143static inline std::ostream &operator <<(std::ostream &o, shstr_tmp sh)
133{ 144{
134 o.write (sh.s, sh.length ()); 145 o.write (sh.s, sh.length ());
135 146
136 return o; 147 return o;
137} 148}
… …
168 { 179 {
169 ++refcnt (); 180 ++refcnt ();
170 } 181 }
171 182
172 explicit shstr (const char *str) 183 explicit shstr (const char *str)
173 : shstr_tmp (0, is_constant (str) && !str ? null () : intern (str)) 184 : shstr_tmp (0, ecb_is_constant (str) && !str ? null () : intern (str))
174 { 185 {
175 } 186 }
176 187
177 ~shstr () 188 ~shstr ()
178 { 189 {
… …
200 211
201 // shstr_tmp doesn't have this one 212 // shstr_tmp doesn't have this one
202 shstr &operator =(const char *str) 213 shstr &operator =(const char *str)
203 { 214 {
204 --refcnt (); 215 --refcnt ();
205 s = is_constant (str) && !str ? null () : intern (str); 216 s = ecb_is_constant (str) && !str ? null () : intern (str);
206 217
207 return *this; 218 return *this;
208 } 219 }
209}; 220};
210 221

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