CRC32 Class Reference

Computes the CRC-32 from a byte stream. More...

#include <crc32.hpp>

Inheritance diagram for CRC32:

[legend]Collaboration diagram for CRC32:

[legend]List of all members.

Public Member Functions
	CRC32 ()
	Default constructor.
wxUint32	getUint32Value () const
	Returns the CRC32 value.
wxString	getValue (const bool hexInUpperCase=false) const
	Returns the CRC32 value in a string.
void	reset ()
	Resets the CRC32 to initial value.
void	update (const wxByte *buf, unsigned int len)
	Updates the CRC32 with specified array of bytes.
Protected Attributes
wxUint32	crc32
	The current CRC32 value.
Static Protected Attributes
const wxUint32	crc_table [256]
	Table used to compute the CRC32 value.

---

Detailed Description

Computes the CRC-32 from a byte stream.

This class is writen with the code found in cksfv and zlib code.

Using this class in very simple:<BR> Use the update method to provide to the class the bytes for computing the checksum.

The CRC-32 checksum value can be gotten by the getValue method which puts the CRC32 checksum value in a unsigned 32 bits integer.

The CRC32 checksum computing can be reseted by the reset method.

Definition at line 60 of file crc32.hpp.

---

Constructor & Destructor Documentation

CRC32::CRC32 (   )

Default constructor. Definition at line 109 of file crc32.cpp. References reset().

---

Member Function Documentation

wxUint32 CRC32::getUint32Value (   )  const

Returns the CRC32 value. Returns: The current checksum value. Definition at line 129 of file crc32.cpp. References crc32. Referenced by getValue().

wxString CRC32::getValue (  const bool  hexInUpperCase = false  )  const [virtual]

Returns the CRC32 value in a string. Parameters: hexInUpperCase  If true the hexadecimal letters will be in uppercase. Returns: The current CRC32 value. Implements Checksum. Definition at line 143 of file crc32.cpp. References getUint32Value(), and getValue(). Referenced by getValue().

void CRC32::reset (   )  [virtual]

Resets the CRC32 to initial value. Implements Checksum. Definition at line 119 of file crc32.cpp. References crc32. Referenced by CRC32().

void CRC32::update (  const wxByte *  buf, unsigned int  len )  [virtual]

Updates the CRC32 with specified array of bytes. Parameters: buf  The byte array to update the CRC32 with. len  The number of bytes to use for the update. Implements Checksum. Definition at line 159 of file crc32.cpp. References crc32, crc_table, and update(). Referenced by update().

---

Member Data Documentation

wxUint32 CRC32::crc32 [protected]

The current CRC32 value. Definition at line 67 of file crc32.hpp. Referenced by getUint32Value(), reset(), and update().

const wxUint32 CRC32::crc_table [static, protected]

Table used to compute the CRC32 value. Definition at line 48 of file crc32.cpp. Referenced by update().

---

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

• crc32.hpp
• crc32.cpp

---