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Disk ARchive
2.5.15
Full featured and portable backup and archiving tool
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makes a segment of a generic_file appear like a real generic_file More...
#include <tronc.hpp>
Inherits libdar::generic_file.
Inherited by libdar::trontextual.
Public Member Functions | |
tronc (generic_file *f, const infinint &offset, const infinint &size, bool own_f=false) | |
constructor More... | |
tronc (generic_file *f, const infinint &offset, const infinint &size, gf_mode mode, bool own_f=false) | |
tronc (generic_file *f, const infinint &offset, bool own_f=false) | |
tronc (generic_file *f, const infinint &offset, gf_mode mode, bool own_f=false) | |
~tronc () | |
destructor | |
void | modify (const infinint &new_offset, const infinint &new_size) |
modify the tronc object to zoom on another (size limited) portion of the underlying object | |
void | modify (const infinint &new_offset) |
modify the tronc object to zoom on another (size unlimited) portion of the underlying object | |
void | modify () |
modify the tronc object to become transparent and allow unrestricted access to the underlyuing object | |
bool | skippable (skippability direction, const infinint &amount) |
inherited from generic_file | |
bool | skip (const infinint &pos) |
inherited from generic_file | |
bool | skip_to_eof () |
inherited from generic_file | |
bool | skip_relative (S_I x) |
inherited from generic_file | |
infinint | get_position () const |
inherited from generic_file | |
void | check_underlying_position_while_reading_or_writing (bool mode) |
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generic_file (gf_mode m) | |
main constructor | |
generic_file (const generic_file &ref) | |
copy constructor | |
virtual | ~generic_file () throw (Ebug) |
virtual destructor, this let inherited destructor to be called even from a generic_file pointer to an inherited class | |
void | terminate () const |
destructor-like call, except that it is allowed to throw exceptions | |
const generic_file & | operator= (const generic_file &ref) |
assignment operator | |
gf_mode | get_mode () const |
retreive the openning mode for this object | |
virtual void | read_ahead (const infinint &amount) |
void | ignore_read_ahead (bool mode) |
U_I | read (char *a, U_I size) |
read data from the generic_file More... | |
void | write (const char *a, U_I size) |
write data to the generic_file More... | |
void | write (const std::string &arg) |
write a string to the generic_file More... | |
S_I | read_back (char &a) |
skip back one char, read on char and skip back one char | |
S_I | read_forward (char &a) |
read one char | |
virtual void | copy_to (generic_file &ref) |
copy all data from current position to the object in argument | |
virtual void | copy_to (generic_file &ref, const infinint &crc_size, crc *&value) |
copy all data from the current position to the object in argument and computes a CRC value of the transmitted data More... | |
U_32 | copy_to (generic_file &ref, U_32 size) |
small copy (up to 4GB) with CRC calculation | |
infinint | copy_to (generic_file &ref, infinint size) |
copy the given amount to the object in argument | |
bool | diff (generic_file &f, const infinint &me_read_ahead, const infinint &you_read_ahead, const infinint &crc_size, crc *&value) |
compares the contents with the object in argument More... | |
bool | diff (generic_file &f, const infinint &me_read_ahead, const infinint &you_read_ahead, const infinint &crc_size, crc *&value, infinint &err_offset) |
void | reset_crc (const infinint &width) |
reset CRC on read or writen data More... | |
bool | crc_status () const |
to known whether CRC calculation is activated or not | |
crc * | get_crc () |
get CRC of the transfered date since last reset More... | |
void | sync_write () |
write any pending data | |
void | flush_read () |
be ready to read at current position, reseting all pending data for reading, cached and in compression engine for example | |
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void * | operator new (size_t n_byte) |
void * | operator new (size_t n_byte, const std::nothrow_t ¬hrow_value) |
void * | operator new[] (size_t n_byte) |
void * | operator new[] (size_t n_byte, const std::nothrow_t ¬hrow_value) |
void * | operator new (size_t n_byte, memory_pool *p) |
void * | operator new[] (size_t n_byte, memory_pool *p) |
void | operator delete (void *ptr, memory_pool *p) |
this operator is called by the compiler if an exception is throw from the constructor of the allocated object | |
void | operator delete[] (void *ptr, memory_pool *p) |
this operator is called by the compiler if an exception is throw from the constructor of the allocated objects | |
void | operator delete (void *ptr) |
this is the usual delete operator, modified to handle allocated objects allocated on a memory pool or not | |
void | operator delete[] (void *ptr) |
this is the usual delete[] operator, modified to handle allocated objects allocated on a memory pool or not | |
Protected Member Functions | |
void | inherited_read_ahead (const infinint &amount) |
inherited from generic_file | |
U_I | inherited_read (char *a, U_I size) |
inherited from generic_file | |
void | inherited_write (const char *a, U_I size) |
inherited from generic_file | |
void | inherited_sync_write () |
write down any pending data More... | |
void | inherited_flush_read () |
void | inherited_terminate () |
destructor-like call, except that it is allowed to throw exceptions More... | |
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void | set_mode (gf_mode x) |
bool | is_terminated () const |
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memory_pool * | get_pool () const |
template<class T > | |
void | meta_new (T *&ptr, size_t num) |
template<class T > | |
void | meta_delete (T *ptr) |
Additional Inherited Members | |
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enum | skippability { skip_backward, skip_forward } |
makes a segment of a generic_file appear like a real generic_file
libdar::tronc::tronc | ( | generic_file * | f, |
const infinint & | offset, | ||
const infinint & | size, | ||
bool | own_f = false |
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) |
constructor
f | is the file to take the segment from |
offset | is the position of the beginning of the segment |
size | is the size of the segment |
own_f | is true if this object has to owns and may destroy the 'f' object at tronc's destruction time |
libdar::tronc::tronc | ( | generic_file * | f, |
const infinint & | offset, | ||
bool | own_f = false |
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) |
other constructor, the end of the segment is the end of the underlying generic_file only data before offset is inaccessible
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inline |
when a tronc is used over a compressor, it becomes necessary to disable position check
Definition at line 92 of file tronc.hpp.
References inherited_read(), inherited_read_ahead(), and inherited_write().
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inlineprotectedvirtual |
reset internal engine, flush caches in order to read the data at current position
Implements libdar::generic_file.
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inlineprotectedvirtual |
write down any pending data
Implements libdar::generic_file.
Definition at line 102 of file tronc.hpp.
References libdar::generic_file::sync_write().
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inlineprotectedvirtual |
destructor-like call, except that it is allowed to throw exceptions
Implements libdar::generic_file.
Definition at line 104 of file tronc.hpp.
References libdar::generic_file::terminate().