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Commit | Line | Data |
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7c673cae FG |
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 |