27#ifndef GENERIC_RSYNC_HPP
28#define GENERIC_RSYNC_HPP
81 const crc **checksum);
104 virtual bool skip(
const infinint & pos)
override {
if(pos != 0 || !initial)
throw SRC_BUG;
else return true; };
106 virtual bool skip_relative(S_I
x)
override {
if(
x != 0)
throw SRC_BUG;
else return true; };
120 enum { sign, delta, patch } status;
126 char *working_buffer;
128 bool patching_completed;
131#if LIBRSYNC_AVAILABLE
pure virtual class defining interface of a CRC object
this is the interface class from which all other data transfer classes inherit
virtual infinint get_position() const =0
get the current read/write position
generic_file interface to librsync
virtual void inherited_flush_read() override
reset internal engine, flush caches in order to read the data at current position
virtual void inherited_truncate(const infinint &pos) override
truncate file at the give offset
virtual void inherited_terminate() override
destructor-like call, except that it is allowed to throw exceptions
virtual bool skippable(skippability direction, const infinint &amount) override
whether the implementation is able to skip
virtual infinint get_position() const override
get the current read/write position
generic_rsync(generic_file *signature_storage, U_I signature_block_size, generic_file *below)
constructor for "signature" operation
virtual bool skip(const infinint &pos) override
skip at the absolute position
virtual void inherited_sync_write() override
write down any pending data
virtual void inherited_read_ahead(const infinint &amount) override
tells the object that several calls to read() will follow to probably obtain at least the given amoun...
generic_rsync(generic_file *current_data, generic_file *delta)
constructor for "patch" operation
generic_rsync(generic_file *base_signature, generic_file *below, const infinint &crc_size, const crc **checksum)
constructor for "delta" operation
bool step_forward(const char *buffer_in, U_I &avail_in, bool shift_input, char *buffer_out, U_I &avail_out)
feed librsync using rs_job_iter
virtual U_I inherited_read(char *a, U_I size) override
implementation of read() operation
virtual bool skip_to_eof() override
skip to the end of file
virtual void inherited_write(const char *a, U_I size) override
implementation of the write() operation
virtual bool skip_relative(S_I x) override
skip relatively to the current position
generic_file * x_below
underlying layer to read from / write to
virtual bool truncatable(const infinint &pos) const override
whether the implementation is able to truncate to the given position
the arbitrary large positive integer class
include macro defined by the configure script and some specific additional ones
libdar namespace encapsulate all libdar symbols
contains all the excetion class thrown by libdar
class generic_file is defined here as well as class fichier