blocxx
DataStreams.hpp
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32
33
39#ifndef BLOCXX_DATA_STREAMS_HPP_INCLUDE_GUARD_
40#define BLOCXX_DATA_STREAMS_HPP_INCLUDE_GUARD_
41#include "blocxx/BLOCXX_config.h"
42#include "blocxx/Types.hpp"
43#if defined(BLOCXX_HAVE_ISTREAM) && defined(BLOCXX_HAVE_OSTREAM)
44#include <istream>
45#include <ostream>
46#else
47#include <iostream>
48#endif
49#if defined(BLOCXX_HAVE_STREAMBUF)
50#include <streambuf>
51#elif defined(BLOCXX_HAVE_STREAMBUF_H)
52#include <streambuf.h>
53#endif
54#include <vector>
55
56// The classes and functions defined in this file are not meant for general
57// use, they are internal implementation details. They may change at any time.
58
59namespace BLOCXX_NAMESPACE
60{
61
63class BLOCXX_COMMON_API DataIStreamBuf : public std::streambuf
64{
65public:
66 DataIStreamBuf(int dataLen, const unsigned char* data) :
67 std::streambuf()
68 {
69 setg(const_cast<char*>(reinterpret_cast<const char*>(data)),
70 const_cast<char*>(reinterpret_cast<const char*>(data)),
71 const_cast<char*>(reinterpret_cast<const char*>(data+dataLen)));
72 }
73protected:
74 virtual int underflow();
75
76 virtual pos_type seekoff(off_type off, std::ios_base::seekdir way, std::ios_base::openmode which);
77 virtual pos_type seekpos(pos_type sp, std::ios_base::openmode which);
78};
80class BLOCXX_COMMON_API DataIStreamBase
81{
82protected:
83 DataIStreamBase(int dataLen, const unsigned char* data) : m_strbuf(dataLen, data) {}
85};
87class BLOCXX_COMMON_API DataIStream : private DataIStreamBase, public std::istream
88{
89public:
90 DataIStream(int dataLen, const unsigned char* data)
91 : DataIStreamBase(dataLen, data)
92 , std::basic_istream<char, std::char_traits<char> >(&m_strbuf) {}
93};
95class BLOCXX_COMMON_API DataOStreamBuf : public std::streambuf
96{
97public:
98 DataOStreamBuf(size_t initialSize = 256);
99 const unsigned char* getData() const { return &m_bfr[0]; }
100 int length() const { return m_bfr.size(); }
101 void clear() { m_bfr.clear(); }
102protected:
103 virtual int overflow(int c);
104 virtual std::streamsize xsputn(const char* s, std::streamsize n);
105private:
106
107#ifdef BLOCXX_WIN32
108#pragma warning (push)
109#pragma warning (disable: 4251)
110#endif
111
112 std::vector<unsigned char> m_bfr;
113
114#ifdef BLOCXX_WIN32
115#pragma warning (pop)
116#endif
117
118};
120class BLOCXX_COMMON_API DataOStreamBase
121{
122protected:
123 DataOStreamBase(size_t initialSize = 256)
124 : m_buf(initialSize) {}
125
127};
129class BLOCXX_COMMON_API DataOStream : private DataOStreamBase, public std::ostream
130{
131public:
132 DataOStream(size_t initialSize = 256)
133 : DataOStreamBase(initialSize)
134 , std::basic_ostream<char, std::char_traits<char> >(&m_buf)
135 {}
136 const unsigned char* getData() const { return m_buf.getData(); }
137 int length() const { return m_buf.length(); }
138 void clearData() { m_buf.clear(); }
139};
140
141} // end namespace BLOCXX_NAMESPACE
142
143#endif
std::vector< char > & m_buf
DataIStreamBase(int dataLen, const unsigned char *data)
DataIStreamBuf(int dataLen, const unsigned char *data)
DataIStream(int dataLen, const unsigned char *data)
DataOStreamBase(size_t initialSize=256)
const unsigned char * getData() const
std::vector< unsigned char > m_bfr
const unsigned char * getData() const
DataOStream(size_t initialSize=256)
Taken from RFC 1321.