Botan  1.11.10
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 98 of file bzip2.cpp.

98  :
99  level((l >= 9) ? 9 : l), buffer(DEFAULT_BUFFERSIZE)
100  {
101  bz = 0;
102  }
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 135 of file bzip2.cpp.

References Botan::Filter::send().

136  {
137  bz->stream.next_in = 0;
138  bz->stream.avail_in = 0;
139 
140  int rc = BZ_OK;
141  while(rc != BZ_STREAM_END)
142  {
143  bz->stream.next_out = reinterpret_cast<char*>(&buffer[0]);
144  bz->stream.avail_out = buffer.size();
145  rc = BZ2_bzCompress(&(bz->stream), BZ_FINISH);
146  send(buffer, buffer.size() - bz->stream.avail_out);
147  }
148  clear();
149  }
virtual void send(const byte in[], size_t length)
Definition: filter.cpp:28
void Botan::Bzip_Compression::flush ( )

Definition at line 154 of file bzip2.cpp.

References Botan::Filter::send().

155  {
156  bz->stream.next_in = 0;
157  bz->stream.avail_in = 0;
158 
159  int rc = BZ_OK;
160  while(rc != BZ_RUN_OK)
161  {
162  bz->stream.next_out = reinterpret_cast<char*>(&buffer[0]);
163  bz->stream.avail_out = buffer.size();
164  rc = BZ2_bzCompress(&(bz->stream), BZ_FLUSH);
165  send(buffer, buffer.size() - bz->stream.avail_out);
166  }
167  }
virtual void send(const byte in[], size_t length)
Definition: filter.cpp:28
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  if(!length)
31  return;
32 
33  bool nothing_attached = true;
34  for(size_t j = 0; j != total_ports(); ++j)
35  if(next[j])
36  {
37  if(write_queue.size())
38  next[j]->write(&write_queue[0], write_queue.size());
39  next[j]->write(input, length);
40  nothing_attached = false;
41  }
42 
43  if(nothing_attached)
44  write_queue += std::make_pair(input, length);
45  else
46  write_queue.clear();
47  }
virtual void write(const byte input[], size_t length)=0
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); }
virtual void send(const byte in[], size_t length)
Definition: filter.cpp:28
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()); }
virtual void send(const byte in[], size_t length)
Definition: filter.cpp:28
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()); }
virtual void send(const byte in[], size_t length)
Definition: filter.cpp:28
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  }
virtual void send(const byte in[], size_t length)
Definition: filter.cpp:28
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  }
virtual void send(const byte in[], size_t length)
Definition: filter.cpp:28
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 107 of file bzip2.cpp.

108  {
109  clear();
110  bz = new Bzip_Stream;
111  if(BZ2_bzCompressInit(&(bz->stream), level, 0, 0) != BZ_OK)
112  throw Memory_Exhaustion();
113  }
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 118 of file bzip2.cpp.

References Botan::Filter::send().

119  {
120  bz->stream.next_in = reinterpret_cast<char*>(const_cast<byte*>(input));
121  bz->stream.avail_in = length;
122 
123  while(bz->stream.avail_in != 0)
124  {
125  bz->stream.next_out = reinterpret_cast<char*>(&buffer[0]);
126  bz->stream.avail_out = buffer.size();
127  BZ2_bzCompress(&(bz->stream), BZ_RUN);
128  send(buffer, buffer.size() - bz->stream.avail_out);
129  }
130  }
virtual void send(const byte in[], size_t length)
Definition: filter.cpp:28
uint8_t byte
Definition: types.h:30

The documentation for this class was generated from the following files: