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

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