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1 | /* |
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2 | * This file is part of Deliantra, the Roguelike Realtime MMORPG. |
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3 | * |
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4 | * Copyright (©) 2005,2006,2007 Marc Alexander Lehmann / Robin Redeker / the Deliantra team |
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5 | * Copyright (©) 2002,2007 Mark Wedel & Crossfire Development Team |
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6 | * Copyright (©) 1992,2007 Frank Tore Johansen |
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7 | * |
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8 | * Deliantra is free software: you can redistribute it and/or modify |
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9 | * it under the terms of the GNU General Public License as published by |
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10 | * the Free Software Foundation, either version 3 of the License, or |
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11 | * (at your option) any later version. |
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12 | * |
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13 | * This program is distributed in the hope that it will be useful, |
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14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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16 | * GNU General Public License for more details. |
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17 | * |
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18 | * You should have received a copy of the GNU General Public License |
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19 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
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20 | * |
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21 | * The authors can be reached via e-mail to <support@deliantra.net> |
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22 | */ |
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23 | |
1 | #ifndef DYNBUF_H__ |
24 | #ifndef DYNBUF_H__ |
2 | #define DYNBUF_H__ |
25 | #define DYNBUF_H__ |
3 | |
26 | |
4 | #include <cstring> |
27 | #include <cstring> |
5 | #include <cassert> |
28 | #include <cassert> |
… | |
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23 | int size; |
46 | int size; |
24 | char data[0]; |
47 | char data[0]; |
25 | }; |
48 | }; |
26 | |
49 | |
27 | char *ptr, *end; |
50 | char *ptr, *end; |
28 | int ext; |
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29 | int _size; |
51 | int _size; |
30 | |
52 | |
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53 | int extend; |
31 | chunk *first, *last; |
54 | chunk *first, *last; |
32 | |
55 | |
33 | void _reserve (int size); |
56 | void reserve (int size); |
34 | void _clear (); |
57 | void init (int initial); // allocate sinitial chunk |
35 | void clear (); |
58 | void free (chunk *&chain); // free chain of chunks |
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59 | char *_linearise (); |
36 | void finish (); |
60 | void finalise (); |
37 | |
61 | |
38 | public: |
62 | public: |
39 | |
63 | |
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64 | // initial - the size of the initial chunk to be allocated |
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65 | // extend - first incremental step when buffer size exceeded |
40 | dynbuf (int initial = 4096, int extend = 16384); |
66 | dynbuf (int initial = 4096, int extend = 16384) |
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67 | : extend (extend) |
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68 | { |
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69 | init (initial); |
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70 | } |
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71 | |
41 | ~dynbuf (); |
72 | ~dynbuf () |
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73 | { |
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74 | free (first); |
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75 | } |
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76 | |
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77 | // resets the dynbuf, but does not free the first chunk |
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78 | // which is either of size "initial" or the size of the last |
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79 | // linearise |
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80 | void clear (); |
42 | |
81 | |
43 | int size () const { return _size + (ptr - last->data); } |
82 | int size () const { return _size + (ptr - last->data); } |
44 | bool empty () const { return !size (); } |
83 | bool empty () const { return !size (); } |
45 | |
84 | |
46 | void linearise (void *data); |
85 | void linearise (void *data); |
47 | char *linearise (); // does not 0-terminate(!) |
86 | char *linearise () // does not 0-terminate(!) |
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87 | { |
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88 | return first->next ? _linearise () : first->data; |
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89 | } |
48 | |
90 | |
49 | int room () const { return end - ptr; } |
91 | int room () const { return end - ptr; } |
50 | |
92 | |
51 | char *force (int size) |
93 | char *force (int size) |
52 | { |
94 | { |
53 | if (expect_false (ptr + size >= end)) |
95 | if (expect_false (ptr + size >= end)) |
54 | _reserve (size); |
96 | reserve (size); |
55 | |
97 | |
56 | return ptr; |
98 | return ptr; |
57 | } |
99 | } |
58 | |
100 | |
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101 | char *falloc (int size) |
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102 | { |
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103 | char *res = ptr; |
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104 | ptr += size; |
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105 | return res; |
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106 | } |
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107 | |
59 | char *alloc (int size) |
108 | char *alloc (int size) |
60 | { |
109 | { |
61 | char *res = force (size); |
110 | force (size); |
62 | ptr += size; |
111 | return falloc (size); |
63 | return res; |
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64 | } |
112 | } |
65 | |
113 | |
66 | void fadd (char c) { *ptr++ = c; } |
114 | void fadd (char c) { *ptr++ = c; } |
67 | void fadd (unsigned char c) { fadd (char (c)); } |
115 | void fadd (unsigned char c) { fadd (char (c)); } |
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116 | void fadd (const void *p, int len) |
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117 | { |
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118 | memcpy (falloc (len), p, len); |
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119 | } |
68 | |
120 | |
69 | void add (const void *p, int len) |
121 | void add (const void *p, int len) |
70 | { |
122 | { |
71 | memcpy (alloc (len), p, len); |
123 | force (len); |
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124 | fadd (p, len); |
72 | } |
125 | } |
73 | |
126 | |
74 | void add (char c) |
127 | void add (char c) |
75 | { |
128 | { |
76 | alloc (1)[0] = c; |
129 | alloc (1)[0] = c; |
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103 | dynbuf_text (int initial = 4096, int extend = 16384) |
156 | dynbuf_text (int initial = 4096, int extend = 16384) |
104 | : dynbuf (initial, extend) |
157 | : dynbuf (initial, extend) |
105 | { } |
158 | { } |
106 | |
159 | |
107 | using dynbuf::add; |
160 | using dynbuf::add; |
108 | |
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109 | static const int max_sint32_size = 11; |
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110 | static const int max_sint64_size = 20; |
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111 | |
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112 | void add (sint32 i); |
161 | void add (sint32 i); |
113 | void add (sint64 i); |
162 | void add (sint64 i); |
114 | |
163 | |
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164 | //TODO: should optimise the case printf "(name %+d)" as it comes up extreemly often |
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165 | |
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166 | using dynbuf::operator <<; |
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167 | dynbuf &operator << (sint16 i) { add (sint32 (i)); return *this; } |
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168 | dynbuf &operator << (uint16 i) { add (sint32 (i)); return *this; } |
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169 | dynbuf &operator << (sint32 i) { add (sint32 (i)); return *this; } |
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170 | dynbuf &operator << (sint64 i) { add (sint64 (i)); return *this; } |
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171 | dynbuf &operator << (uint32 i) { add (sint64 (i)); return *this; } |
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172 | dynbuf &operator << (uint64 i) { add (sint64 (i)); return *this; } |
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173 | |
115 | void printf (const char *format, ...); |
174 | void printf (const char *format, ...); |
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175 | void vprintf (const char *format, va_list ap); |
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176 | |
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177 | void add_abilities (const char *name, uint32 abilities); |
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178 | void add_paths (const char *name, uint32 paths); |
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179 | |
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180 | // returns the string, linearised and with trailing \0 |
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181 | operator const char * (); |
116 | }; |
182 | }; |
117 | |
183 | |
118 | #endif |
184 | #endif |
119 | |
185 | |