2 mike 1.2 //
3 // Copyright (c) 2000, 2001, 2002 BMC Software; Hewlett-Packard Development
4 // Company, L.P.; IBM Corp.; The Open Group; Tivoli Systems.
5 // Copyright (c) 2003 BMC Software; Hewlett-Packard Development Company, L.P.;
6 // IBM Corp.; EMC Corporation, The Open Group.
7 // Copyright (c) 2004 BMC Software; Hewlett-Packard Development Company, L.P.;
8 // IBM Corp.; EMC Corporation; VERITAS Software Corporation; The Open Group.
9 // Copyright (c) 2005 Hewlett-Packard Development Company, L.P.; IBM Corp.;
10 // EMC Corporation; VERITAS Software Corporation; The Open Group.
|
13 mike 1.2 //
14 // Permission is hereby granted, free of charge, to any person obtaining a copy
15 // of this software and associated documentation files (the "Software"), to
16 // deal in the Software without restriction, including without limitation the
17 // rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
18 // sell copies of the Software, and to permit persons to whom the Software is
19 // furnished to do so, subject to the following conditions:
20 //
21 // THE ABOVE COPYRIGHT NOTICE AND THIS PERMISSION NOTICE SHALL BE INCLUDED IN
22 // ALL COPIES OR SUBSTANTIAL PORTIONS OF THE SOFTWARE. THE SOFTWARE IS PROVIDED
23 // "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT
24 // LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
25 // PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
26 // HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
27 // ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
29 //
30 //==============================================================================
31 //
32 // Author: Michael E. Brasher (mike-brasher@austin.rr.com -- Inova Europe)
33 //
34 mike 1.2 //%/////////////////////////////////////////////////////////////////////////////
35
36 #ifndef Pegasus_Buffer_h
37 #define Pegasus_Buffer_h
38
39 #include <Pegasus/Common/Config.h>
40 #include <Pegasus/Common/Linkage.h>
41 #include <cstring>
42
43 PEGASUS_NAMESPACE_BEGIN
44
45 struct BufferRep
46 {
47 size_t size;
48 size_t cap;
49 char data[1];
50 };
51
52 class PEGASUS_COMMON_LINKAGE Buffer
53 {
54 public:
55 mike 1.2
56 Buffer();
57
58 Buffer(const Buffer& x);
59
60 Buffer(const char* data, size_t size);
61
62 ~Buffer();
63
64 Buffer& operator=(const Buffer& x);
65
66 void swap(Buffer& x);
67
68 size_t size() const;
69
70 size_t capacity() const;
71
72 const char* getData() const;
73
74 char get(size_t i) const;
75
76 mike 1.2 void set(size_t i, char x);
77
78 const char& operator[](size_t i) const;
79
80 void reserveCapacity(size_t cap);
81
82 void grow(size_t size, char x = '\0');
83
84 void append(char x);
85
86 void append(const char* data, size_t size);
87
88 void append(char c1, char c2, char c3, char c4);
89
90 void append(
91 char c1, char c2, char c3, char c4, char c5, char c6, char c7, char c8);
92
93 void insert(size_t pos, const char* data, size_t size);
94
95 void remove(size_t pos, size_t size);
96
97 mike 1.2 void remove(size_t pos);
98
99 void clear();
100
101 private:
102
103 void _reserve_aux(size_t cap);
104
105 void _append_char_aux();
106
107 BufferRep* _rep;
108 static BufferRep _empty_rep;
109 };
110
111 inline Buffer::Buffer() : _rep(&_empty_rep)
112 {
113 }
114
115 inline Buffer::~Buffer()
116 {
117 if (_rep != &_empty_rep)
118 mike 1.2 free(_rep);
119 }
120
121 inline void Buffer::swap(Buffer& x)
122 {
123 BufferRep* tmp = _rep;
124 _rep = x._rep;
125 x._rep = tmp;
126 }
127
128 inline size_t Buffer::size() const
129 {
130 return _rep->size;
131 }
132
133 inline size_t Buffer::capacity() const
134 {
135 return _rep->cap;
136 }
137
138 inline const char* Buffer::getData() const
139 mike 1.2 {
140 return _rep->data;
141 }
142
143 inline char Buffer::get(size_t i) const
144 {
145 return _rep->data[i];
146 }
147
148 inline void Buffer::set(size_t i, char x)
149 {
150 _rep->data[i] = x;
151 }
152
153 inline const char& Buffer::operator[](size_t i) const
154 {
155 return _rep->data[i];
156 }
157
158 inline void Buffer::reserveCapacity(size_t cap)
159 {
160 mike 1.2 if (cap > _rep->cap)
161 _reserve_aux(cap);
162 }
163
164 inline void Buffer::grow(size_t size, char x)
165 {
166 size_t cap = _rep->size + size;
167
168 if (cap > _rep->cap)
169 _reserve_aux(cap);
170
171 memset(_rep->data + _rep->size, x, size);
172 _rep->size += size;
173 }
174
175 inline void Buffer::append(char x)
176 {
177 if (_rep->size == _rep->cap)
178 _append_char_aux();
179
180 _rep->data[_rep->size++] = x;
181 mike 1.2 }
182
183 inline void Buffer::append(const char* data, size_t size)
184 {
185 size_t cap = _rep->size + size;
186
187 if (cap > _rep->cap)
188 _reserve_aux(cap);
189
190 memcpy(_rep->data + _rep->size, data, size);
191 _rep->size += size;
192 }
193
194 inline void Buffer::clear()
195 {
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198 mike 1.2 }
199
200 inline void Buffer::remove(size_t pos)
201 {
202 remove(pos, 1);
203 }
204
205 inline void Buffer::append(char c1, char c2, char c3, char c4)
206 {
207 size_t cap = _rep->size + 4;
208
209 if (cap > _rep->cap)
210 _reserve_aux(cap);
211
212 char* p = _rep->data + _rep->size;
213 p[0] = c1;
214 p[1] = c2;
215 p[2] = c3;
216 p[3] = c4;
217 _rep->size += 4;
218 }
219 mike 1.2
220 inline void Buffer::append(
221 char c1, char c2, char c3, char c4, char c5, char c6, char c7, char c8)
222 {
223 size_t cap = _rep->size + 8;
224
225 if (cap > _rep->cap)
226 _reserve_aux(cap);
227
228 char* p = _rep->data + _rep->size;
229 p[0] = c1;
230 p[1] = c2;
231 p[2] = c3;
232 p[3] = c4;
233 p[4] = c5;
234 p[5] = c6;
235 p[6] = c7;
236 p[7] = c8;
237 _rep->size += 8;
238 }
239
240 mike 1.2 inline bool operator==(const Buffer& x, const Buffer& y)
241 {
242 return memcmp(x.getData(), y.getData(), x.size()) == 0;
243 }
244
245 PEGASUS_NAMESPACE_END
246
247 #endif /* Pegasus_Buffer_h */
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