| … | |
… | |
| 16 | { |
16 | { |
| 17 | protected: |
17 | protected: |
| 18 | struct chunk |
18 | struct chunk |
| 19 | { |
19 | { |
| 20 | chunk *next; |
20 | chunk *next; |
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|
21 | int alloc; |
| 21 | int size; |
22 | int size; |
| 22 | char data[0]; |
23 | char data[0]; |
| 23 | }; |
24 | }; |
| 24 | |
25 | |
| 25 | char *ptr; |
26 | char *ptr, *end; |
| 26 | int room; |
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|
| 27 | int ext; |
27 | int ext; |
| 28 | int _size; |
28 | int _size; |
| 29 | |
29 | |
| 30 | chunk *first, *last; |
30 | chunk *first, *last; |
| 31 | |
31 | |
| 32 | void _reserve (int size); |
32 | void _reserve (int size); |
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33 | void _clear (); |
| 33 | void clear (); |
34 | void clear (); |
| 34 | void finish (); |
35 | void finish (); |
| 35 | |
36 | |
| 36 | public: |
37 | public: |
| 37 | |
38 | |
| 38 | dynbuf (int initial = 4096, int extend = 16384); |
39 | dynbuf (int initial = 4096, int extend = 16384); |
| 39 | ~dynbuf (); |
40 | ~dynbuf (); |
| 40 | |
41 | |
| 41 | int size () { return _size + (ptr - last->data); } |
42 | int size () const { return _size + (ptr - last->data); } |
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43 | bool empty () const { return !size (); } |
| 42 | |
44 | |
| 43 | void linearise (void *data); |
45 | void linearise (void *data); |
| 44 | char *linearise (); |
46 | char *linearise (); // does not 0-terminate(!) |
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47 | |
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48 | int room () const { return end - ptr; } |
| 45 | |
49 | |
| 46 | char *force (int size) |
50 | char *force (int size) |
| 47 | { |
51 | { |
| 48 | if (room < size) |
52 | if (ptr + size >= end) |
| 49 | _reserve (size); |
53 | _reserve (size); |
| 50 | |
54 | |
| 51 | return ptr; |
55 | return ptr; |
| 52 | } |
56 | } |
| 53 | |
57 | |
| 54 | char *alloc (int size) |
58 | char *alloc (int size) |
| 55 | { |
59 | { |
| 56 | char *res = force (size); |
60 | char *res = force (size); |
| 57 | |
|
|
| 58 | room -= size; |
|
|
| 59 | ptr += size; |
61 | ptr += size; |
| 60 | |
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| 61 | return res; |
62 | return res; |
| 62 | } |
63 | } |
| 63 | |
64 | |
| 64 | void fadd (char c) { --room; *ptr++ = c; } |
65 | void fadd (char c) { *ptr++ = c; } |
| 65 | void fadd (unsigned char c) { fadd (char (c)); } |
66 | void fadd (unsigned char c) { fadd (char (c)); } |
| 66 | |
67 | |
| 67 | void add (const void *p, int len) |
68 | void add (const void *p, int len) |
| 68 | { |
69 | { |
| 69 | memcpy (alloc (len), p, len); |
70 | memcpy (alloc (len), p, len); |
| … | |
… | |
| 88 | //void add_destructive (dynbuf &buf); |
89 | //void add_destructive (dynbuf &buf); |
| 89 | |
90 | |
| 90 | dynbuf &operator << (char c) { add (c); return *this; } |
91 | dynbuf &operator << (char c) { add (c); return *this; } |
| 91 | dynbuf &operator << (unsigned char c) { return *this << char (c); } |
92 | dynbuf &operator << (unsigned char c) { return *this << char (c); } |
| 92 | dynbuf &operator << (const char *s) { add (s); return *this; } |
93 | dynbuf &operator << (const char *s) { add (s); return *this; } |
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94 | dynbuf &operator << (const shstr &s) { add (s); return *this; } |
| 93 | dynbuf &operator << (const std::string &s) { add (s.data(), s.size ()); return *this; } |
95 | dynbuf &operator << (const std::string &s) { add (s.data(), s.size ()); return *this; } |
| 94 | |
96 | |
| 95 | operator std::string (); |
97 | operator std::string (); |
| 96 | }; |
98 | }; |
| 97 | |
99 | |
| … | |
… | |
| 111 | |
113 | |
| 112 | void printf (const char *format, ...); |
114 | void printf (const char *format, ...); |
| 113 | }; |
115 | }; |
| 114 | |
116 | |
| 115 | #endif |
117 | #endif |
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118 | |
