contrib/iostream/zfstream.h


#ifndef zfstream_h
#define zfstream_h

#include <fstream.h>
#include "zlib.h"

class gzfilebuf : public streambuf {

public:

  gzfilebuf( );
  virtual ~gzfilebuf();

  gzfilebuf *open( const char *name, int io_mode );
  gzfilebuf *attach( int file_descriptor, int io_mode );
  gzfilebuf *close();

  int setcompressionlevel( int comp_level );
  int setcompressionstrategy( int comp_strategy );

  inline int is_open() const { return (file !=NULL); }

  virtual streampos seekoff( streamoff, ios::seek_dir, int );

  virtual int sync();

protected:

  virtual int underflow();
  virtual int overflow( int = EOF );

private:

  gzFile file;
  short mode;
  short own_file_descriptor;

  int flushbuf();
  int fillbuf();

};

class gzfilestream_common : virtual public ios {

  friend class gzifstream;
  friend class gzofstream;
  friend gzofstream &setcompressionlevel( gzofstream &, int );
  friend gzofstream &setcompressionstrategy( gzofstream &, int );

public:
  virtual ~gzfilestream_common();

  void attach( int fd, int io_mode );
  void open( const char *name, int io_mode );
  void close();

protected:
  gzfilestream_common();

private:
  gzfilebuf *rdbuf();

  gzfilebuf buffer;

};

class gzifstream : public gzfilestream_common, public istream {

public:

  gzifstream();
  gzifstream( const char *name, int io_mode = ios::in );
  gzifstream( int fd, int io_mode = ios::in );

  virtual ~gzifstream();

};

class gzofstream : public gzfilestream_common, public ostream {

public:

  gzofstream();
  gzofstream( const char *name, int io_mode = ios::out );
  gzofstream( int fd, int io_mode = ios::out );

  virtual ~gzofstream();

};

template<class T> class gzomanip {
  friend gzofstream &operator<<(gzofstream &, const gzomanip<T> &);
public:
  gzomanip(gzofstream &(*f)(gzofstream &, T), T v) : func(f), val(v) { }
private:
  gzofstream &(*func)(gzofstream &, T);
  T val;
};

template<class T> gzofstream &operator<<(gzofstream &s, const gzomanip<T> &m)
{
  return (*m.func)(s, m.val);
}

inline gzofstream &setcompressionlevel( gzofstream &s, int l )
{
  (s.rdbuf())->setcompressionlevel(l);
  return s;
}

inline gzofstream &setcompressionstrategy( gzofstream &s, int l )
{
  (s.rdbuf())->setcompressionstrategy(l);
  return s;
}

inline gzomanip<int> setcompressionlevel(int l)
{
  return gzomanip<int>(&setcompressionlevel,l);
}

inline gzomanip<int> setcompressionstrategy(int l)
{
  return gzomanip<int>(&setcompressionstrategy,l);
}

#endif
Revision:	1096
Committed:	Sat Dec 30 14:40:33 2017 UTC (7 years, 9 months ago) by s10k
Content type:	text/x-chdr
File size:	2467 byte(s)
Log Message:	Added zlib, quazip, basicxmlsyntaxhighlighter, conditionalsemaphore and linenumberdisplay libraries. zlib and quazip are pre-compiled, but you can compile them yourself, just delete the dll files (or equivalent binary files to your OS)
#	Content
1
2	#ifndef zfstream_h
3	#define zfstream_h
4
5	#include <fstream.h>
6	#include "zlib.h"
7
8	class gzfilebuf : public streambuf {
9
10	public:
11
12	gzfilebuf( );
13	virtual ~gzfilebuf();
14
15	gzfilebuf open( const char name, int io_mode );
16	gzfilebuf *attach( int file_descriptor, int io_mode );
17	gzfilebuf *close();
18
19	int setcompressionlevel( int comp_level );
20	int setcompressionstrategy( int comp_strategy );
21
22	inline int is_open() const { return (file !=NULL); }
23
24	virtual streampos seekoff( streamoff, ios::seek_dir, int );
25
26	virtual int sync();
27
28	protected:
29
30	virtual int underflow();
31	virtual int overflow( int = EOF );
32
33	private:
34
35	gzFile file;
36	short mode;
37	short own_file_descriptor;
38
39	int flushbuf();
40	int fillbuf();
41
42	};
43
44	class gzfilestream_common : virtual public ios {
45
46	friend class gzifstream;
47	friend class gzofstream;
48	friend gzofstream &setcompressionlevel( gzofstream &, int );
49	friend gzofstream &setcompressionstrategy( gzofstream &, int );
50
51	public:
52	virtual ~gzfilestream_common();
53
54	void attach( int fd, int io_mode );
55	void open( const char *name, int io_mode );
56	void close();
57
58	protected:
59	gzfilestream_common();
60
61	private:
62	gzfilebuf *rdbuf();
63
64	gzfilebuf buffer;
65
66	};
67
68	class gzifstream : public gzfilestream_common, public istream {
69
70	public:
71
72	gzifstream();
73	gzifstream( const char *name, int io_mode = ios::in );
74	gzifstream( int fd, int io_mode = ios::in );
75
76	virtual ~gzifstream();
77
78	};
79
80	class gzofstream : public gzfilestream_common, public ostream {
81
82	public:
83
84	gzofstream();
85	gzofstream( const char *name, int io_mode = ios::out );
86	gzofstream( int fd, int io_mode = ios::out );
87
88	virtual ~gzofstream();
89
90	};
91
92	template<class T> class gzomanip {
93	friend gzofstream &operator<<(gzofstream &, const gzomanip<T> &);
94	public:
95	gzomanip(gzofstream &(*f)(gzofstream &, T), T v) : func(f), val(v) { }
96	private:
97	gzofstream &(*func)(gzofstream &, T);
98	T val;
99	};
100
101	template<class T> gzofstream &operator<<(gzofstream &s, const gzomanip<T> &m)
102	{
103	return (*m.func)(s, m.val);
104	}
105
106	inline gzofstream &setcompressionlevel( gzofstream &s, int l )
107	{
108	(s.rdbuf())->setcompressionlevel(l);
109	return s;
110	}
111
112	inline gzofstream &setcompressionstrategy( gzofstream &s, int l )
113	{
114	(s.rdbuf())->setcompressionstrategy(l);
115	return s;
116	}
117
118	inline gzomanip<int> setcompressionlevel(int l)
119	{
120	return gzomanip<int>(&setcompressionlevel,l);
121	}
122
123	inline gzomanip<int> setcompressionstrategy(int l)
124	{
125	return gzomanip<int>(&setcompressionstrategy,l);
126	}
127
128	#endif