Botan  1.11.4
Public Member Functions | Protected Member Functions | List of all members
Botan::Bzip_Compression Class Reference

#include <bzip2.h>

Inheritance diagram for Botan::Bzip_Compression:
Botan::Filter

Public Member Functions

virtual bool attachable ()
 
 Bzip_Compression (size_t=9)
 
void end_msg ()
 
void flush ()
 
std::string name () const
 
void start_msg ()
 
void write (const byte input[], size_t length)
 
 ~Bzip_Compression ()
 

Protected Member Functions

virtual void send (const byte in[], size_t length)
 
void send (byte in)
 
void send (const secure_vector< byte > &in)
 
void send (const std::vector< byte > &in)
 
void send (const secure_vector< byte > &in, size_t length)
 
void send (const std::vector< byte > &in, size_t length)
 

Detailed Description

Bzip Compression Filter

Definition at line 19 of file bzip2.h.

Constructor & Destructor Documentation

Botan::Bzip_Compression::Bzip_Compression ( size_t  l = 9)

Definition at line 97 of file bzip2.cpp.

98  :
99  level((l >= 9) ? 9 : l), buffer(DEFAULT_BUFFERSIZE)
100  {
101  bz = 0;
}
Botan::Bzip_Compression::~Bzip_Compression ( )
inline

Definition at line 31 of file bzip2.h.

31 { clear(); }

Member Function Documentation

virtual bool Botan::Filter::attachable ( )
inlinevirtualinherited

Check whether this filter is an attachable filter.

Returns
true if this filter is attachable, false otherwise

Reimplemented in Botan::SecureQueue, and Botan::DataSink.

Definition at line 52 of file filter.h.

52 { return true; }
void Botan::Bzip_Compression::end_msg ( )
virtual

Notify that the current message is finished; flush buffers and do end-of-message processing (if any).

Reimplemented from Botan::Filter.

Definition at line 134 of file bzip2.cpp.

References Botan::Filter::send().

135  {
136  bz->stream.next_in = 0;
137  bz->stream.avail_in = 0;
138 
139  int rc = BZ_OK;
140  while(rc != BZ_STREAM_END)
141  {
142  bz->stream.next_out = reinterpret_cast<char*>(&buffer[0]);
143  bz->stream.avail_out = buffer.size();
144  rc = BZ2_bzCompress(&(bz->stream), BZ_FINISH);
145  send(buffer, buffer.size() - bz->stream.avail_out);
146  }
147  clear();
148  }
void Botan::Bzip_Compression::flush ( )

Definition at line 153 of file bzip2.cpp.

References Botan::Filter::send().

154  {
155  bz->stream.next_in = 0;
156  bz->stream.avail_in = 0;
157 
158  int rc = BZ_OK;
159  while(rc != BZ_RUN_OK)
160  {
161  bz->stream.next_out = reinterpret_cast<char*>(&buffer[0]);
162  bz->stream.avail_out = buffer.size();
163  rc = BZ2_bzCompress(&(bz->stream), BZ_FLUSH);
164  send(buffer, buffer.size() - bz->stream.avail_out);
165  }
166  }
std::string Botan::Bzip_Compression::name ( ) const
inlinevirtual
Returns
descriptive name for this filter

Implements Botan::Filter.

Definition at line 22 of file bzip2.h.

22 { return "Bzip_Compression"; }
void Botan::Filter::send ( const byte  in[],
size_t  length 
)
protectedvirtualinherited
Parameters
insome input for the filter
lengththe length of in

Reimplemented in Botan::Threaded_Fork.

Definition at line 28 of file filter.cpp.

References Botan::Filter::write().

Referenced by Botan::PK_Encryptor_Filter::end_msg(), Botan::Zlib_Compression::end_msg(), end_msg(), Botan::Lzma_Compression::end_msg(), Botan::Hex_Encoder::end_msg(), Botan::Base64_Encoder::end_msg(), Botan::PK_Decryptor_Filter::end_msg(), Botan::Bzip_Decompression::end_msg(), Botan::PK_Signer_Filter::end_msg(), Botan::Lzma_Decompression::end_msg(), Botan::Zlib_Decompression::end_msg(), Botan::Hex_Decoder::end_msg(), Botan::Base64_Decoder::end_msg(), Botan::PK_Verifier_Filter::end_msg(), Botan::Hash_Filter::end_msg(), Botan::MAC_Filter::end_msg(), flush(), Botan::Zlib_Compression::flush(), Botan::Lzma_Compression::flush(), write(), Botan::Zlib_Compression::write(), Botan::Lzma_Compression::write(), Botan::StreamCipher_Filter::write(), Botan::Bzip_Decompression::write(), Botan::Lzma_Decompression::write(), Botan::Zlib_Decompression::write(), Botan::Hex_Decoder::write(), and Botan::Base64_Decoder::write().

29  {
30  bool nothing_attached = true;
31  for(size_t j = 0; j != total_ports(); ++j)
32  if(next[j])
33  {
34  if(write_queue.size())
35  next[j]->write(&write_queue[0], write_queue.size());
36  next[j]->write(input, length);
37  nothing_attached = false;
38  }
39 
40  if(nothing_attached)
41  write_queue += std::make_pair(input, length);
42  else
43  write_queue.clear();
44  }
void Botan::Filter::send ( byte  in)
inlineprotectedinherited
Parameters
insome input for the filter

Definition at line 65 of file filter.h.

References Botan::Filter::send().

Referenced by Botan::Filter::send().

65 { send(&in, 1); }
void Botan::Filter::send ( const secure_vector< byte > &  in)
inlineprotectedinherited
Parameters
insome input for the filter

Definition at line 70 of file filter.h.

References Botan::Filter::send().

Referenced by Botan::Filter::send().

70 { send(&in[0], in.size()); }
void Botan::Filter::send ( const std::vector< byte > &  in)
inlineprotectedinherited
Parameters
insome input for the filter

Definition at line 75 of file filter.h.

References Botan::Filter::send().

Referenced by Botan::Filter::send().

75 { send(&in[0], in.size()); }
void Botan::Filter::send ( const secure_vector< byte > &  in,
size_t  length 
)
inlineprotectedinherited
Parameters
insome input for the filter
lengththe number of bytes of in to send

Definition at line 81 of file filter.h.

82  {
83  send(&in[0], length);
84  }
void Botan::Filter::send ( const std::vector< byte > &  in,
size_t  length 
)
inlineprotectedinherited
Parameters
insome input for the filter
lengththe number of bytes of in to send

Definition at line 90 of file filter.h.

91  {
92  send(&in[0], length);
93  }
void Botan::Bzip_Compression::start_msg ( )
virtual

Start a new message. Must be closed by end_msg() before another message can be started.

Reimplemented from Botan::Filter.

Definition at line 106 of file bzip2.cpp.

107  {
108  clear();
109  bz = new Bzip_Stream;
110  if(BZ2_bzCompressInit(&(bz->stream), level, 0, 0) != BZ_OK)
111  throw Memory_Exhaustion();
112  }
void Botan::Bzip_Compression::write ( const byte  input[],
size_t  length 
)
virtual

Write a portion of a message to this filter.

Parameters
inputthe input as a byte array
lengththe length of the byte array input

Implements Botan::Filter.

Definition at line 117 of file bzip2.cpp.

References Botan::Filter::send().

118  {
119  bz->stream.next_in = reinterpret_cast<char*>(const_cast<byte*>(input));
120  bz->stream.avail_in = length;
121 
122  while(bz->stream.avail_in != 0)
123  {
124  bz->stream.next_out = reinterpret_cast<char*>(&buffer[0]);
125  bz->stream.avail_out = buffer.size();
126  BZ2_bzCompress(&(bz->stream), BZ_RUN);
127  send(buffer, buffer.size() - bz->stream.avail_out);
128  }
129  }
The documentation for this class was generated from the following files:
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