libStatGen Software  1
CharBuffer.h
1 /*
2  * Copyright (C) 2010 Regents of the University of Michigan
3  *
4  * This program is free software: you can redistribute it and/or modify
5  * it under the terms of the GNU General Public License as published by
6  * the Free Software Foundation, either version 3 of the License, or
7  * (at your option) any later version.
8  *
9  * This program is distributed in the hope that it will be useful,
10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12  * GNU General Public License for more details.
13  *
14  * You should have received a copy of the GNU General Public License
15  * along with this program. If not, see <http://www.gnu.org/licenses/>.
16  */
17 
18 #ifndef __BUFFER_H__
19 #define __BUFFER_H__
20 
21 #include <stdint.h>
22 #include "InputFile.h"
23 
25 {
26 public:
27  CharBuffer();
28  CharBuffer(int32_t initialSize);
29  ~CharBuffer();
30 
31  // Copy Constructor
32  CharBuffer(const CharBuffer& buffer);
33 
34  // Overload operator = to copy the passed in buffer into this buffer.
35  CharBuffer& operator = (const CharBuffer& buffer);
36 
37  // Overload operator = to copy the passed in buffer into this buffer.
38  CharBuffer& operator = (const std::string& stringBuffer);
39 
40  // Overload operator = to copy the passed in buffer into this buffer.
41  bool copy(const CharBuffer& buffer);
42 
43  void reset();
44 
45  // Read from a file into the buffer. length is the amount of data to read.
46  // Returns the number of bytes read.
47  int readFromFile(IFILE filePtr, int32_t length);
48 
49  inline const char* c_str() const
50  {
51  return(myBuffer);
52  }
53 
54  inline int32_t length() const
55  {
56  return(myBufferLen);
57  }
58 
59 private:
60  // newLen is the new length for the buffer.
61  bool prepareNewLength(int32_t newLen);
62 
63  int32_t myBufferLen;
64  char* myBuffer;
65 
66  int32_t myBufferAllocatedLen;
67 
68  static const int32_t DEFAULT_BUFFER_SIZE = 100;
69 };
70 
71 #endif
72 
Class for easily reading/writing files without having to worry about file type (uncompressed, gzip, bgzf) when reading.
Definition: InputFile.h:36