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Comparing deliantra/server/include/dynbuf.h (file contents):
Revision 1.23 by root, Thu Oct 15 21:09:32 2009 UTC vs.
Revision 1.39 by root, Wed Dec 5 19:03:26 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 * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team 6 * Copyright (©) 2002 Mark Wedel & Crossfire Development Team
6 * Copyright (©) 1992,2007 Frank Tore Johansen 7 * Copyright (©) 1992 Frank Tore Johansen
7 * 8 *
8 * Deliantra is free software: you can redistribute it and/or modify it under 9 * Deliantra is free software: you can redistribute it and/or modify it under
9 * the terms of the Affero GNU General Public License as published by the 10 * the terms of the Affero GNU General Public License as published by the
10 * Free Software Foundation, either version 3 of the License, or (at your 11 * Free Software Foundation, either version 3 of the License, or (at your
11 * option) any later version. 12 * option) any later version.
12 * 13 *
13 * This program is distributed in the hope that it will be useful, 14 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of 15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details. 17 * GNU General Public License for more details.
17 * 18 *
18 * You should have received a copy of the Affero GNU General Public License 19 * You should have received a copy of the Affero GNU General Public License
19 * and the GNU General Public License along with this program. If not, see 20 * and the GNU General Public License along with this program. If not, see
20 * <http://www.gnu.org/licenses/>. 21 * <http://www.gnu.org/licenses/>.
21 * 22 *
22 * The authors can be reached via e-mail to <support@deliantra.net> 23 * The authors can be reached via e-mail to <support@deliantra.net>
23 */ 24 */
24 25
25#ifndef DYNBUF_H__ 26#ifndef DYNBUF_H__
26#define DYNBUF_H__ 27#define DYNBUF_H__
27 28
28#include <cstring> 29#include <cstring>
29#include <cassert> 30#include <cassert>
30 31
32#include "compiler.h"
31#include "util.h" 33#include "util.h"
32#include "shstr.h" 34#include "shstr.h"
33 35
34// this is a "buffer" that can grow fast 36// this is a "buffer" that can grow fast
35// and is still somewhat space-efficient. 37// and is still somewhat space-efficient.
… …
55 chunk *first, *last; 57 chunk *first, *last;
56 58
57 void reserve (int size); 59 void reserve (int size);
58 void init (int initial); // allocate sinitial chunk 60 void init (int initial); // allocate sinitial chunk
59 void free (chunk *&chain); // free chain of chunks 61 void free (chunk *&chain); // free chain of chunks
60 char *_linearise (); 62 char *_linearise (int extra = 0);
61 void finalise (); 63 void finalise ();
62 64
63public: 65public:
64 66
65 // initial - the size of the initial chunk to be allocated 67 // initial - the size of the initial chunk to be allocated
… …
83 int size () const { return _size + (ptr - last->data); } 85 int size () const { return _size + (ptr - last->data); }
84 bool empty () const { return !size (); } 86 bool empty () const { return !size (); }
85 87
86 void linearise (void *data); 88 void linearise (void *data);
87 char *linearise () // does not 0-terminate(!) 89 char *linearise () // does not 0-terminate(!)
88 { 90 {
89 return first->next ? _linearise () : first->data; 91 return first->next ? _linearise () : first->data;
90 } 92 }
91 93
92 int room () const { return end - ptr; } 94 int room () const { return end - ptr; }
93 95
96 // make sure we have "size" extra room
94 char *force (int size) 97 char *force (int size)
95 { 98 {
96 if (expect_false (ptr + size >= end)) 99 if (ecb_expect_false (ptr + size > end))
97 reserve (size); 100 reserve (size);
98 101
102 ecb_assume (ptr + size <= end);
103
99 return ptr; 104 return ptr;
100 } 105 }
101 106
107 // used for force + alloc combo
108 void alloc (char *p)
109 {
110 ptr = p;
111 }
112
113 // allocate size bytes and return pointer to them (caller must force())
102 char *falloc (int size) 114 char *falloc (int size)
103 { 115 {
104 char *res = ptr; 116 char *res = ptr;
105 ptr += size; 117 ptr += size;
106 return res; 118 return res;
107 } 119 }
108 120
121 // allocate size bytes and return pointer to them
109 char *alloc (int size) 122 char *alloc (int size)
110 { 123 {
111 force (size); 124 force (size);
112 return falloc (size); 125 return falloc (size);
113 } 126 }
… …
137 150
138 void add (shstr_tmp s) 151 void add (shstr_tmp s)
139 { 152 {
140 add (s.s, s.length ()); 153 add (s.s, s.length ());
141 } 154 }
155
156 // rather inefficient
157 void splice (int offset, int olen, const char *s, int slen);
158 void splice (int offset, int olen) { splice (offset, olen, "", 0); }
142 159
143 //TODO 160 //TODO
144 //void add_destructive (dynbuf &buf); 161 //void add_destructive (dynbuf &buf);
145 162
146 dynbuf &operator << (char c) { add (c); return *this; } 163 dynbuf &operator << (char c) { add (c); return *this; }
… …
174 dynbuf_text &operator << (sint32 i) { add (sint32 (i)); return *this; } 191 dynbuf_text &operator << (sint32 i) { add (sint32 (i)); return *this; }
175 dynbuf_text &operator << (sint64 i) { add (sint64 (i)); return *this; } 192 dynbuf_text &operator << (sint64 i) { add (sint64 (i)); return *this; }
176 dynbuf_text &operator << (uint32 i) { add (sint64 (i)); return *this; } 193 dynbuf_text &operator << (uint32 i) { add (sint64 (i)); return *this; }
177 dynbuf_text &operator << (uint64 i) { add (sint64 (i)); return *this; } 194 dynbuf_text &operator << (uint64 i) { add (sint64 (i)); return *this; }
178 195
179 void printf (const char *format, ...); 196 void printf (const char *format, ...) ecb_attribute ((format (printf, 2, 3)));
180 void vprintf (const char *format, va_list ap); 197 void vprintf (const char *format, va_list ap);
181 198
182 void add_abilities (const char *name, uint32 abilities); 199 void add_abilities (const char *name, uint32 abilities);
183 void add_paths (const char *name, uint32 paths); 200 void add_paths (const char *name, uint32 paths);
201
202 // we need to redefine, to keep the API :/
203 using dynbuf::splice;
204 void splice (int offset, int olen, const char *s)
205 {
206 dynbuf::splice (offset, olen, s, strlen (s));
207 }
184 208
185 // returns the string, linearised and with trailing \0 209 // returns the string, linearised and with trailing \0
186 operator char *(); 210 operator char *();
187}; 211};
188 212

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