Botan::Base64_Encoder Class Reference

#include <b64_filt.h>

Inheritance diagram for Botan::Base64_Encoder:

List of all members.

Public Member Functions
virtual bool	attachable ()
	Base64_Encoder (bool breaks=false, size_t length=72, bool t_n=false)
void	end_msg ()
std::string	name () const
virtual void	start_msg ()
void	write (const byte input[], size_t length)
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

This class represents a Base64 encoder.

Definition at line 18 of file b64_filt.h.

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Constructor & Destructor Documentation

Botan::Base64_Encoder::Base64_Encoder	(	bool	breaks = false,
		size_t	length = 72,
		bool	t_n = false
	)

Create a base64 encoder.

Parameters:

breaks	whether to use line breaks in the output
length	the length of the lines of the output
t_n	whether to use a trailing newline

Definition at line 19 of file b64_filt.cpp.

                                                                   :
   line_length(breaks ? length : 0),
   trailing_newline(t_n && breaks),
   in(48),
   out(64),
   position(0),
   out_position(0)
   {
   }

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Member Function Documentation

virtual bool Botan::Filter::attachable

(

)

[inline, virtual, inherited]

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.

{ return true; }

void Botan::Base64_Encoder::end_msg

(

)

[virtual]

Inform the Encoder that the current message shall be closed.

Reimplemented from Botan::Filter.

Definition at line 103 of file b64_filt.cpp.

References Botan::Filter::send().

   {
   encode_and_send(&in[0], position, true);

   if(trailing_newline || (out_position && line_length))
      send('\n');

   out_position = position = 0;
   }

std::string Botan::Base64_Encoder::name

(

)

const [inline, virtual]

Returns:

descriptive name for this filter

Implements Botan::Filter.

Definition at line 21 of file b64_filt.h.

{ return "Base64_Encoder"; }

void Botan::Filter::send	(	const byte	in[],
		size_t	length
	)		[protected, virtual, inherited]

Parameters:

in	some input for the filter
length	the length of in

Reimplemented in Botan::Threaded_Fork.

Definition at line 28 of file filter.cpp.

References Botan::Filter::write().

Referenced by Botan::Compression_Decompression_Filter::end_msg(), Botan::Hex_Encoder::end_msg(), end_msg(), Botan::Hex_Decoder::end_msg(), Botan::Base64_Decoder::end_msg(), Botan::Hash_Filter::end_msg(), Botan::MAC_Filter::end_msg(), Botan::Compression_Decompression_Filter::flush(), Botan::Compression_Decompression_Filter::start_msg(), Botan::Compression_Decompression_Filter::write(), Botan::StreamCipher_Filter::write(), Botan::Hex_Decoder::write(), and Botan::Base64_Decoder::write().

   {
   if(!length)
      return;

   bool nothing_attached = true;
   for(size_t j = 0; j != total_ports(); ++j)
      if(next[j])
         {
         if(write_queue.size())
            next[j]->write(&write_queue[0], write_queue.size());
         next[j]->write(input, length);
         nothing_attached = false;
         }

   if(nothing_attached)
      write_queue += std::make_pair(input, length);
   else
      write_queue.clear();
   }

void Botan::Filter::send

(

byte

in

)

[inline, protected, inherited]

Parameters:

in	some input for the filter

Definition at line 65 of file filter.h.

References Botan::Filter::send().

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

{ send(&in, 1); }

void Botan::Filter::send

(

const secure_vector< byte > &

in

)

[inline, protected, inherited]

Parameters:

in	some input for the filter

Definition at line 70 of file filter.h.

References Botan::Filter::send().

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

{ send(&in[0], in.size()); }

void Botan::Filter::send

(

const std::vector< byte > &

in

)

[inline, protected, inherited]

Parameters:

in	some input for the filter

Definition at line 75 of file filter.h.

References Botan::Filter::send().

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

{ send(&in[0], in.size()); }

void Botan::Filter::send	(	const secure_vector< byte > &	in,
		size_t	length
	)		[inline, protected, inherited]

Parameters:

in	some input for the filter
length	the number of bytes of in to send

Definition at line 81 of file filter.h.

         {
         send(&in[0], length);
         }

void Botan::Filter::send	(	const std::vector< byte > &	in,
		size_t	length
	)		[inline, protected, inherited]

Parameters:

in	some input for the filter
length	the number of bytes of in to send

Definition at line 90 of file filter.h.

         {
         send(&in[0], length);
         }

virtual void Botan::Filter::start_msg

(

)

[inline, virtual, inherited]

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

Reimplemented in Botan::Compression_Decompression_Filter.

Definition at line 40 of file filter.h.

{}

void Botan::Base64_Encoder::write	(	const byte	input[],
		size_t	length
	)		[virtual]

Input a part of a message to the encoder.

Parameters:

input	the message to input as a byte array
length	the length of the byte array input

Implements Botan::Filter.

Definition at line 80 of file b64_filt.cpp.

References Botan::buffer_insert(), and Botan::copy_mem().

   {
   buffer_insert(in, position, input, length);
   if(position + length >= in.size())
      {
      encode_and_send(&in[0], in.size());
      input += (in.size() - position);
      length -= (in.size() - position);
      while(length >= in.size())
         {
         encode_and_send(input, in.size());
         input += in.size();
         length -= in.size();
         }
      copy_mem(&in[0], input, length);
      position = 0;
      }
   position += length;
   }

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

• src/lib/filters/codec_filt/b64_filt.h
• src/lib/filters/codec_filt/b64_filt.cpp