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Patchfile Class Reference

#include <patchfile.h>

List of all members.

Protected Member Functions
	PT (Buffer) _buffer
Protected Attributes
bool	_initiated
PN_uint16	_version_number
HashVal	_MD5_ofSource
PN_uint32	_source_file_length
HashVal	_MD5_ofResult
PN_uint32	_result_file_length
int	_total_bytes_processed
ifstream	_patch_stream
ofstream	_write_stream
ifstream	_origfile_stream
Filename	_patch_file
Filename	_orig_file
Filename	_temp_file
Static Protected Attributes
const PN_uint32	_v0_magic_number = 0xfeebfaab
const PN_uint32	_magic_number = 0xfeebfaac
const PN_uint16	_current_version = 2
Private Member Functions
	Patchfile (PT(Buffer) buffer)
	~Patchfile (void)
bool	build (Filename file_orig, Filename file_new, Filename patch_name)
int	read_header (const Filename &patch_file)
int	initiate (const Filename &patch_file, const Filename &file)
int	run (void)
bool	apply (Filename &patch_file, Filename &file)
INLINE float	get_progress (void) const
INLINE void	set_footprint_length (int length)
INLINE int	get_footprint_length ()
INLINE void	reset_footprint_length ()
INLINE bool	has_source_hash () const
INLINE const HashVal &	get_source_hash () const
INLINE const HashVal &	get_result_hash () const
int	internal_read_header (const Filename &patch_file)
void	init (PT(Buffer) buffer)
void	cleanup (void)
void	build_hash_link_tables (const char *buffer_orig, PN_uint32 length_orig, PN_uint32 *hash_table, PN_uint32 *link_table)
PN_uint16	calc_hash (const char *buffer)
void	find_longest_match (PN_uint32 new_pos, PN_uint32 &copy_pos, PN_uint16 &copy_length, PN_uint32 *hash_table, PN_uint32 *link_table, const char *buffer_orig, PN_uint32 length_orig, const char *buffer_new, PN_uint32 length_new)
PN_uint32	calc_match_length (const char *buf1, const char *buf2, PN_uint32 max_length)
void	emit_ADD (ofstream &write_stream, PN_uint16 length, const char *buffer, PN_uint32 ADD_pos)
void	emit_COPY (ofstream &write_stream, PN_uint16 length, PN_uint32 COPY_pos, PN_uint32 last_copy_pos, PN_uint32 ADD_pos)
Private Attributes
PUBLISHED	__pad0__: Patchfile(void)
PN_uint32	_footprint_length
Static Private Attributes
const PN_uint32	_HASHTABLESIZE = PN_uint32(1) << 16
const PN_uint32	_DEFAULT_FOOTPRINT_LENGTH = 9
const PN_uint32	_NULL_VALUE = PN_uint32(0) - 1
const PN_uint32	_MAX_RUN_LENGTH = (PN_uint32(1) << 16) - 1

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Constructor & Destructor Documentation

Patchfile::Patchfile (  PT(Buffer)  buffer  )  [private]

Definition at line 112 of file patchfile.cxx. References buffer, and init().

Patchfile::~Patchfile (  void   )  [private]

Definition at line 138 of file patchfile.cxx. References _initiated, and cleanup().

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Member Function Documentation

bool Patchfile::apply (  Filename &  patch_file, Filename &  file )  [private]

Definition at line 439 of file patchfile.cxx. References EU_success, initiate(), and run(). Referenced by main().

bool Patchfile::build (  Filename  file_orig, Filename  file_new, Filename  patch_name )  [private]

Definition at line 793 of file patchfile.cxx. References _current_version, _footprint_length, _HASHTABLESIZE, _magic_number, _MD5_ofResult, _MD5_ofSource, _result_file_length, _source_file_length, StreamWriter::add_uint16(), StreamWriter::add_uint32(), build_hash_link_tables(), emit_ADD(), emit_COPY(), END_PROFILE, find_longest_match(), HashVal::get_value(), md5_a_buffer(), NULL, PN_uint16, PN_uint32, and START_PROFILE. Referenced by main().

void Patchfile::build_hash_link_tables (  const char *  buffer_orig, PN_uint32  length_orig, PN_uint32 *  hash_table, PN_uint32 *  link_table )  [private]

Definition at line 578 of file patchfile.cxx. References _footprint_length, _HASHTABLESIZE, _NULL_VALUE, calc_hash(), END_PROFILE, PN_uint16, PN_uint32, START_PROFILE, and t. Referenced by build().

PN_uint16 Patchfile::calc_hash (  const char *  buffer  )  [private]

--> TRIED MD5, was not worth it for the execution-time hit on 800Mhz PC Definition at line 530 of file patchfile.cxx. References _footprint_length, buffer, HashVal::get_value(), md5_a_buffer(), and PN_uint16. Referenced by build_hash_link_tables(), and find_longest_match().

PN_uint32 Patchfile::calc_match_length (  const char *  buf1, const char *  buf2, PN_uint32  max_length )  [private]

Definition at line 676 of file patchfile.cxx. References length, and PN_uint32. Referenced by find_longest_match().

void Patchfile::cleanup (  void   )  [private]

Definition at line 149 of file patchfile.cxx. References _initiated, _origfile_stream, _patch_stream, and _write_stream. Referenced by run(), and ~Patchfile().

void Patchfile::emit_ADD (  ofstream &  write_stream, PN_uint16  length, const char *  buffer, PN_uint32  ADD_pos )  [private]

Definition at line 738 of file patchfile.cxx. References StreamWriter::add_uint16(), StreamWriter::append_data(), buffer, and length. Referenced by build().

void Patchfile::emit_COPY (  ofstream &  write_stream, PN_uint16  length, PN_uint32  COPY_pos, PN_uint32  last_copy_pos, PN_uint32  ADD_pos )  [private]

Definition at line 761 of file patchfile.cxx. References StreamWriter::add_int32(), StreamWriter::add_uint16(), length, and PN_int32. Referenced by build().

void Patchfile::find_longest_match (  PN_uint32  new_pos, PN_uint32 &  copy_pos, PN_uint16 &  copy_length, PN_uint32 *  hash_table, PN_uint32 *  link_table, const char *  buffer_orig, PN_uint32  length_orig, const char *  buffer_new, PN_uint32  length_new )  [private]

Definition at line 692 of file patchfile.cxx. References _MAX_RUN_LENGTH, _NULL_VALUE, calc_hash(), calc_match_length(), PN_uint16, and PN_uint32. Referenced by build().

INLINE int Patchfile::get_footprint_length (   )  [private]

INLINE float Patchfile::get_progress (  void   )  const [private]

INLINE const HashVal& Patchfile::get_result_hash (   )  const [private]

INLINE const HashVal& Patchfile::get_source_hash (   )  const [private]

Referenced by run().

INLINE bool Patchfile::has_source_hash (   )  const [private]

Referenced by run().

void Patchfile::init (  PT(Buffer)  buffer  )  [private]

Definition at line 122 of file patchfile.cxx. References _initiated, _version_number, buffer, and reset_footprint_length(). Referenced by Patchfile().

int Patchfile::initiate (  const Filename &  patch_file, const Filename &  file )  [private]

Definition at line 184 of file patchfile.cxx. References _initiated, _orig_file, _origfile_stream, _temp_file, _total_bytes_processed, _write_stream, EU_error_abort, get_write_error(), internal_read_header(), and NULL. Referenced by apply(), and Patcher::initiate().

int Patchfile::internal_read_header (  const Filename &  patch_file  )  [private]

Definition at line 459 of file patchfile.cxx. References _current_version, _magic_number, _MD5_ofResult, _MD5_ofSource, _patch_file, _patch_stream, _result_file_length, _source_file_length, _v0_header_length, _v0_magic_number, _version_number, EU_error_file_invalid, EU_success, StreamReader::get_uint16(), StreamReader::get_uint32(), get_write_error(), PN_uint32, and HashVal::set_value(). Referenced by initiate(), and read_header().

Patchfile::PT (  Buffer   )  [protected]

int Patchfile::read_header (  const Filename &  patch_file  )  [private]

Definition at line 243 of file patchfile.cxx. References _patch_stream, EU_error_abort, and internal_read_header().

INLINE void Patchfile::reset_footprint_length (   )  [private]

Referenced by init().

int Patchfile::run (  void   )  [private]

Definition at line 262 of file patchfile.cxx. References _initiated, _MD5_ofResult, _orig_file, _origfile_stream, _patch_file, _patch_stream, _result_file_length, _temp_file, _total_bytes_processed, _version_number, _write_stream, cleanup(), EU_error_abort, EU_error_invalid_checksum, EU_error_write_file_rename, EU_ok, EU_success, StreamReader::get_int32(), get_source_hash(), StreamReader::get_uint16(), has_source_hash(), keep_temporary_files, md5_a_file(), PN_int32, PN_uint16, and PN_uint32. Referenced by apply(), and Patcher::run().

INLINE void Patchfile::set_footprint_length (  int  length  )  [private]

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Member Data Documentation

PUBLISHED Patchfile::__pad0__ [private]

Definition at line 56 of file patchfile.h.

const PN_uint16 Patchfile::_current_version = 2 [static, protected]

Definition at line 88 of file patchfile.cxx. Referenced by build(), and internal_read_header().

const PN_uint32 Patchfile::_DEFAULT_FOOTPRINT_LENGTH = 9 [static, private]

Definition at line 91 of file patchfile.cxx.

PN_uint32 Patchfile::_footprint_length [private]

Definition at line 104 of file patchfile.h. Referenced by build(), build_hash_link_tables(), and calc_hash().

const PN_uint32 Patchfile::_HASHTABLESIZE = PN_uint32(1) << 16 [static, private]

Definition at line 90 of file patchfile.cxx. Referenced by build(), and build_hash_link_tables().

bool Patchfile::_initiated [protected]

Definition at line 110 of file patchfile.h. Referenced by cleanup(), init(), initiate(), run(), and ~Patchfile().

const PN_uint32 Patchfile::_magic_number = 0xfeebfaac [static, protected]

Definition at line 84 of file patchfile.cxx. Referenced by build(), and internal_read_header().

const PN_uint32 Patchfile::_MAX_RUN_LENGTH = (PN_uint32(1) << 16) - 1 [static, private]

Definition at line 93 of file patchfile.cxx. Referenced by find_longest_match().

HashVal Patchfile::_MD5_ofResult [protected]

Definition at line 117 of file patchfile.h. Referenced by build(), internal_read_header(), and run().

HashVal Patchfile::_MD5_ofSource [protected]

Definition at line 114 of file patchfile.h. Referenced by build(), and internal_read_header().

const PN_uint32 Patchfile::_NULL_VALUE = PN_uint32(0) - 1 [static, private]

Definition at line 92 of file patchfile.cxx. Referenced by build_hash_link_tables(), and find_longest_match().

Filename Patchfile::_orig_file [protected]

Definition at line 126 of file patchfile.h. Referenced by initiate(), and run().

ifstream Patchfile::_origfile_stream [protected]

Definition at line 123 of file patchfile.h. Referenced by cleanup(), initiate(), and run().

Filename Patchfile::_patch_file [protected]

Definition at line 125 of file patchfile.h. Referenced by internal_read_header(), and run().

ifstream Patchfile::_patch_stream [protected]

Definition at line 121 of file patchfile.h. Referenced by cleanup(), internal_read_header(), read_header(), and run().

PN_uint32 Patchfile::_result_file_length [protected]

Definition at line 118 of file patchfile.h. Referenced by build(), internal_read_header(), and run().

PN_uint32 Patchfile::_source_file_length [protected]

Definition at line 115 of file patchfile.h. Referenced by build(), and internal_read_header().

Filename Patchfile::_temp_file [protected]

Definition at line 127 of file patchfile.h. Referenced by initiate(), and run().

int Patchfile::_total_bytes_processed [protected]

Definition at line 119 of file patchfile.h. Referenced by initiate(), and run().

const PN_uint32 Patchfile::_v0_magic_number = 0xfeebfaab [static, protected]

Definition at line 83 of file patchfile.cxx. Referenced by internal_read_header().

PN_uint16 Patchfile::_version_number [protected]

Definition at line 112 of file patchfile.h. Referenced by init(), internal_read_header(), and run().

ofstream Patchfile::_write_stream [protected]

Definition at line 122 of file patchfile.h. Referenced by cleanup(), initiate(), and run().

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

• patchfile.h
• patchfile.cxx

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