Disk ARchive
2.4.21
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zapette emulate a file that is remotely controlled by slave_zapette More...
#include <zapette.hpp>
Inherits libdar::generic_file, libdar::contextual, and libdar::mem_ui.
Public Member Functions | |
zapette (user_interaction &dialog, generic_file *input, generic_file *output, bool by_the_end) | |
zapette constructor More... | |
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 | |
void | set_info_status (const std::string &s) |
bool | is_an_old_start_end_archive () const |
const label & | get_data_name () const |
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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... | |
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void | set_mode (gf_mode x) |
bool | is_terminated () const |
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mem_ui (user_interaction &dialog) | |
constructor More... | |
mem_ui (const mem_ui &ref) | |
the copy constructor More... | |
virtual | ~mem_ui () |
destructor More... | |
const mem_ui & | operator= (const mem_ui &ref) |
assignement operator More... | |
user_interaction & | get_ui () const |
get access to the user_interaction cloned object More... | |
zapette emulate a file that is remotely controlled by slave_zapette
class zapette sends order to slave_zapette throw a a first pipe and receive informations or data in return from a second pipe from slave_zapette
Definition at line 53 of file zapette.hpp.
libdar::zapette::zapette | ( | user_interaction & | dialog, |
generic_file * | input, | ||
generic_file * | output, | ||
bool | by_the_end | ||
) |
zapette constructor
[in] | dialog | is used to return status information to the user |
[in] | input | is the pipe (see class tuyau) from which is received the information or data |
[in] | output | is used to send orders to slave_zapette |
[in] | by_the_end | if true dar will try to open the archive starting from the end else it will try starting from the first bytes |
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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.
Referenced by get_position().
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inlineprotectedvirtual |
write down any pending data
Implements libdar::generic_file.
Definition at line 80 of file zapette.hpp.
References inherited_terminate().
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protectedvirtual |
destructor-like call, except that it is allowed to throw exceptions
Implements libdar::generic_file.
Referenced by inherited_sync_write().
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protectedvirtual |
implementation of the write() operation
[in] | a | what data to write |
[in] | size | amount of data to write |
Implements libdar::generic_file.
Referenced by get_position().
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virtual |
skip at the absolute position
[in] | pos | the offset in byte where next read/write operation must start |
Implements libdar::generic_file.