Disk ARchive
2.4.12
|
scrambler is a very weak encryption scheme More...
#include <scrambler.hpp>
Inherits libdar::generic_file.
Public Member Functions | |
scrambler (const secu_string &pass, generic_file &hidden_side) | |
scrambler (const scrambler &ref) | |
const scrambler & | operator= (const scrambler &ref) |
bool | skip (const infinint &pos) |
skip at the absolute position More... | |
bool | skip_to_eof () |
skip to the end of file | |
bool | skip_relative (S_I x) |
skip relatively to the current position | |
infinint | get_position () |
get the current read/write position | |
![]() | |
generic_file (gf_mode m) | |
main constructor | |
generic_file (const generic_file &ref) | |
copy constructor | |
void | terminate () const |
virtual destructor, this let inherited destructor to be called even from a generic_file pointer to an inherited class More... | |
const generic_file & | operator= (const generic_file &ref) |
assignment operator | |
gf_mode | get_mode () const |
retreive the openning mode for this object | |
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 &crc_size, crc *&value) |
compares the contents with the object in argument More... | |
bool | diff (generic_file &f, 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 | |
Protected Member Functions | |
U_I | inherited_read (char *a, U_I size) |
implementation of read() operation More... | |
void | inherited_write (const char *a, U_I size) |
implementation of the write() operation More... | |
void | inherited_sync_write () |
write down any pending data More... | |
void | inherited_terminate () |
destructor-like call, except that it is allowed to throw exceptions More... | |
![]() | |
void | set_mode (gf_mode x) |
bool | is_terminated () const |
scrambler is a very weak encryption scheme
Definition at line 43 of file scrambler.hpp.
|
protectedvirtual |
implementation of read() operation
[in,out] | a | where to put the data to read |
[in] | size | says how much data to read |
Implements libdar::generic_file.
|
inlineprotectedvirtual |
write down any pending data
Implements libdar::generic_file.
Definition at line 63 of file scrambler.hpp.
|
inlineprotectedvirtual |
destructor-like call, except that it is allowed to throw exceptions
Implements libdar::generic_file.
Definition at line 64 of file scrambler.hpp.
|
protectedvirtual |
implementation of the write() operation
[in] | a | what data to write |
[in] | size | amount of data to write |
Implements libdar::generic_file.
|
inlinevirtual |
skip at the absolute position
[in] | pos | the offset in byte where next read/write operation must start |
Implements libdar::generic_file.
Definition at line 52 of file scrambler.hpp.
References skip().
Referenced by skip().