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 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 |
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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__ |
… | |
… | |
32 | extern int buf_overflow (const char *buf1, const char *buf2, int bufsize); |
33 | extern int buf_overflow (const char *buf1, const char *buf2, int bufsize); |
33 | |
34 | |
34 | template<int size> |
35 | template<int size> |
35 | struct shstr_vec |
36 | struct shstr_vec |
36 | { |
37 | { |
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38 | uint32_t hash; |
37 | uint32_t len; |
39 | uint32_t len; |
38 | uint32_t refcnt; |
40 | uint32_t refcnt; |
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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. |
47 | struct shstr_tmp |
50 | struct 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 | |
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57 | static unsigned int &hash (const char *s) |
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58 | { |
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59 | return *((unsigned int *)s - 3); |
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60 | } |
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61 | |
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62 | int hash () const |
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63 | { |
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64 | return hash (s); |
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65 | } |
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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 | |
… | |
… | |
68 | int plen = strlen (prefix); |
81 | int plen = strlen (prefix); |
69 | |
82 | |
70 | return length () >= plen && !strncasecmp (s, prefix, plen); |
83 | return length () >= plen && !strncasecmp (s, prefix, plen); |
71 | } |
84 | } |
72 | |
85 | |
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86 | // returns true if the substring is contained in the shstr |
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87 | // if the shstr is 0, then this always returns false. |
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88 | // the shstr is (theoretically) treated as a comma/colon/space etc. separated list. |
73 | bool contains (const char *substring) const |
89 | bool contains (const char *substring) const |
74 | { |
90 | { |
75 | return strstr (s, substring); |
91 | return s != null () && strstr (s, substring); |
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92 | } |
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93 | |
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94 | //TODO: case sensitive should be eradicated |
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95 | bool eq_nc (const char *otherstring) const |
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96 | { |
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97 | return !strcasecmp (s, otherstring); |
76 | } |
98 | } |
77 | |
99 | |
78 | shstr_tmp () |
100 | shstr_tmp () |
79 | : s (null ()) |
101 | : s (null ()) |
80 | { |
102 | { |
… | |
… | |
113 | inline bool operator !=(const shstr_tmp &a, const shstr_tmp &b) |
135 | inline bool operator !=(const shstr_tmp &a, const shstr_tmp &b) |
114 | { |
136 | { |
115 | return a.s != b.s; |
137 | return a.s != b.s; |
116 | } |
138 | } |
117 | |
139 | |
118 | inline int strlen (const shstr_tmp &sh) |
140 | inline int strlen (shstr_tmp sh) |
119 | { |
141 | { |
120 | return sh.length (); |
142 | return sh.length (); |
121 | } |
143 | } |
122 | |
144 | |
123 | // undefined external reference to catch people using strcmp when they shouldn't |
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124 | int strcmp (const shstr_tmp &a, const shstr_tmp &b); |
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125 | |
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126 | static std::ostream &operator <<(std::ostream &o, shstr_tmp sh) |
145 | static inline std::ostream &operator <<(std::ostream &o, shstr_tmp sh) |
127 | { |
146 | { |
128 | o.write (sh.s, sh.length ()); |
147 | o.write (sh.s, sh.length ()); |
129 | |
148 | |
130 | return o; |
149 | return o; |
131 | } |
150 | } |
… | |
… | |
206 | // temporary passing, basically a non-refcounted shstr |
225 | // temporary passing, basically a non-refcounted shstr |
207 | struct shstr_cmp |
226 | struct shstr_cmp |
208 | { |
227 | { |
209 | const char *s; |
228 | const char *s; |
210 | |
229 | |
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230 | // initialies to the non-matching string (as opposed to the null string) |
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231 | shstr_cmp () |
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232 | { |
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233 | s = 0; |
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234 | } |
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235 | |
211 | explicit shstr_cmp (const char *str) |
236 | shstr_cmp (const char *str) |
212 | : s (shstr::find (str)) |
237 | : s (shstr::find (str)) |
213 | { |
238 | { |
214 | } |
239 | } |
215 | |
240 | |
216 | shstr_cmp (shstr_tmp sh) |
241 | shstr_cmp (shstr_tmp sh) |
… | |
… | |
232 | inline bool operator ==(const shstr_tmp &a, const shstr_cmp &b) |
257 | inline bool operator ==(const shstr_tmp &a, const shstr_cmp &b) |
233 | { |
258 | { |
234 | return a.s == b.s; |
259 | return a.s == b.s; |
235 | } |
260 | } |
236 | |
261 | |
237 | #define def(str) extern const shstr shstr_ ## str; |
262 | #define def2(id,str) extern const shstr id; |
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263 | #define def(id) def2(shstr_ ## id, # id) |
238 | # include "shstrinc.h" |
264 | # include "shstrinc.h" |
239 | #undef def |
265 | #undef def |
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266 | #undef def2 |
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267 | |
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268 | // undefined external reference to catch people using str* functions when they shouldn't |
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269 | //template<class any> void strcmp (const shstr_tmp &a, any b); |
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270 | template<class any> void strstr (const shstr_tmp &a, any b); |
240 | |
271 | |
241 | #endif |
272 | #endif |
242 | |
273 | |