Crypto++ 8.2 Free C++ class library of cryptographic schemes

Public Member Functions | Public Attributes | List of all members
FilterPutSpaceHelper Struct Reference

Create a working space in a BufferedTransformation. More...

Inheritance diagram for FilterPutSpaceHelper:

## Public Member Functions
byte * | HelpCreatePutSpace (BufferedTransformation &target, const std::string &channel, size_t minSize, size_t desiredSize, size_t &bufferSize)
| Create a working space in a BufferedTransformation. More...
byte * | HelpCreatePutSpace (BufferedTransformation &target, const std::string &channel, size_t minSize)
| Create a working space in a BufferedTransformation. More...
byte * | HelpCreatePutSpace (BufferedTransformation &target, const std::string &channel, size_t minSize, size_t bufferSize)
| Create a working space in a BufferedTransformation. More...

## Public Attributes
SecByteBlock | m_tempSpace
| Temporay working space.

## Detailed Description

Create a working space in a BufferedTransformation.

Definition at line 170 of file filters.h.

## Member Function Documentation

## ◆ HelpCreatePutSpace() [1/3]

byte* FilterPutSpaceHelper::HelpCreatePutSpace | ( | BufferedTransformation & | target,
|  | const std::string & | channel,
|  | size_t | minSize,
|  | size_t | desiredSize,
|  | size_t & | bufferSize
| ) |  |
| inline

Create a working space in a BufferedTransformation.

Parameters

  target | BufferedTransformation for the working space
  channel | channel for the working space
  minSize | minimum size of the allocation, in bytes
  desiredSize | preferred size of the allocation, in bytes
  bufferSize | actual size of the allocation, in bytes

Precondition
  `desiredSize >= minSize` and `bufferSize >= minSize`.

bufferSize is an IN and OUT parameter. If HelpCreatePutSpace() returns a non-NULL value, then bufferSize is valid and provides the size of the working space created for the caller.

Internally, HelpCreatePutSpace() calls ChannelCreatePutSpace() using desiredSize. If the target returns desiredSize with a size less than minSize (i.e., the request could not be fulfilled), then an internal SecByteBlock called m_tempSpace is resized and used for the caller.

Definition at line 187 of file filters.h.

## ◆ HelpCreatePutSpace() [2/3]

byte* FilterPutSpaceHelper::HelpCreatePutSpace | ( | BufferedTransformation & | target,
|  | const std::string & | channel,
|  | size_t | minSize
| ) |  |
| inline

Create a working space in a BufferedTransformation.

Parameters

  target | the BufferedTransformation for the working space
  channel | channel for the working space
  minSize | minimum size of the allocation, in bytes

Returns
  pointer to the created space

Internally, the overload calls HelpCreatePutSpace() using minSize for missing arguments.

The filter will delete the space. The caller does not need to delete the space.

Definition at line 212 of file filters.h.

## ◆ HelpCreatePutSpace() [3/3]

byte* FilterPutSpaceHelper::HelpCreatePutSpace | ( | BufferedTransformation & | target,
|  | const std::string & | channel,
|  | size_t | minSize,
|  | size_t | bufferSize
| ) |  |
| inline

Create a working space in a BufferedTransformation.

Parameters

  target | the BufferedTransformation for the working space
  channel | channel for the working space
  minSize | minimum size of the allocation, in bytes
  bufferSize | the actual size of the allocation, in bytes

Internally, the overload calls HelpCreatePutSpace() using minSize for missing arguments.

The filter will delete the space. The caller does not need to delete the space.

Definition at line 222 of file filters.h.

The documentation for this struct was generated from the following file:

- filters.h