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Disk ARchive 2.7.18
Full featured and portable backup and archiving tool
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manages the generation of a hash More...
#include <hash_fichier.hpp>
Inherits libdar::fichier_global.
Public Member Functions | |
| hash_fichier (const std::shared_ptr< user_interaction > &dialog, fichier_global *under, const std::string &under_filename, fichier_global *hash_file, hash_algo algo) | |
| hash_fichier (const hash_fichier &ref)=delete | |
| copy constructor | |
| hash_fichier (hash_fichier &&ref) noexcept=delete | |
| move constructor | |
| hash_fichier & | operator= (const hash_fichier &ref)=delete |
| assignment operator | |
| hash_fichier & | operator= (hash_fichier &&ref) noexcept=delete |
| move operator | |
| ~hash_fichier () | |
| destructor | |
| virtual void | change_ownership (const std::string &user, const std::string &group) override |
| set the ownership of the file | |
| virtual void | change_permission (U_I perm) override |
| change the permission of the file | |
| virtual infinint | get_size () const override |
| return the size of the file | |
| virtual void | fadvise (advise adv) const override |
| set posix_fadvise for the whole file | |
| virtual bool | skippable (skippability direction, const infinint &amount) override |
| whether the implementation is able to skip | |
| virtual bool | skip (const infinint &pos) override |
| skip at the absolute position | |
| virtual bool | skip_to_eof () override |
| skip to the end of file | |
| virtual bool | skip_relative (S_I x) override |
| skip relatively to the current position | |
| virtual bool | truncatable (const infinint &pos) const override |
| whether the implementation is able to truncate to the given position | |
| virtual infinint | get_position () const override |
| get the current read/write position | |
| void | set_only_hash () |
| for debugging purposes only | |
Public Member Functions inherited from libdar::fichier_global | |
| fichier_global (const std::shared_ptr< user_interaction > &dialog, gf_mode mode) | |
| constructor | |
| fichier_global (const fichier_global &ref)=default | |
| copy constructor | |
| fichier_global (fichier_global &&ref) noexcept=default | |
| move constructor | |
| fichier_global & | operator= (const fichier_global &ref)=default |
| assignment operator | |
| fichier_global & | operator= (fichier_global &&ref) noexcept=default |
| move operator | |
Public Member Functions inherited from libdar::generic_file | |
| generic_file (gf_mode m) | |
| main constructor | |
| generic_file (const generic_file &ref) | |
| copy constructor | |
| generic_file (generic_file &&ref) noexcept | |
| move constructor | |
| generic_file & | operator= (const generic_file &ref) |
| assignment operator | |
| generic_file & | operator= (generic_file &&ref) noexcept |
| move operator | |
| ~generic_file () noexcept(false) | |
| virtual destructor, | |
| void | terminate () |
| destructor-like call, except that it is allowed to throw exceptions | |
| bool | operator== (generic_file &ref) |
| bool | operator!= (generic_file &ref) |
| gf_mode | get_mode () const |
| retreive the openning mode for this object | |
| void | read_ahead (const infinint &amount) |
| void | ignore_read_ahead (bool mode) |
| virtual U_I | read (char *a, U_I size) override |
| read data from the generic_file inherited from proto_generic_file | |
| virtual void | write (const char *a, U_I size) override |
| write data to the generic_file inherited from proto_generic_file | |
| void | write (const std::string &arg) |
| write a string to the generic_file | |
| 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 | truncate (const infinint &pos) |
| truncate file at the given offset | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
Public Member Functions inherited from libdar::proto_generic_file | |
| proto_generic_file (const proto_generic_file &ref)=default | |
| copy constructor | |
| proto_generic_file (proto_generic_file &&ref) noexcept=default | |
| move constructor | |
| proto_generic_file & | operator= (const proto_generic_file &ref)=default |
| assignment operator | |
| proto_generic_file & | operator= (proto_generic_file &&ref) noexcept=default |
| move operator | |
| virtual | ~proto_generic_file () noexcept(false) |
| virtual destructor | |
Public Member Functions inherited from libdar::thread_cancellation | |
| thread_cancellation () | |
| the constructor | |
| thread_cancellation (const thread_cancellation &ref)=default | |
| copy constructor | |
| thread_cancellation (thread_cancellation &&ref) noexcept=default | |
| move constructor | |
| thread_cancellation & | operator= (const thread_cancellation &ref)=default |
| assignment operator | |
| thread_cancellation & | operator= (thread_cancellation &&ref) noexcept=default |
| move operator | |
| virtual | ~thread_cancellation () noexcept(false) |
| the destructor | |
| void | check_self_cancellation () const |
| Checkpoint test : whether the current libdar call must abort or not. | |
| void | block_delayed_cancellation (bool mode) |
Public Member Functions inherited from libdar::mem_ui | |
| mem_ui (const std::shared_ptr< user_interaction > &dialog) | |
| constructor | |
| mem_ui (const mem_ui &ref)=default | |
| the copy constructor | |
| mem_ui (mem_ui &&ref) noexcept=default | |
| the move constructor | |
| mem_ui & | operator= (const mem_ui &ref)=default |
| assignement operator | |
| mem_ui & | operator= (mem_ui &&ref) noexcept=default |
| move operator | |
| virtual | ~mem_ui () noexcept(false) |
| destructor | |
Protected Member Functions | |
| 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 amount of data | |
| virtual U_I | fichier_global_inherited_write (const char *a, U_I size) override |
| replaces generic_file::inherited_write() method, to allow the return of partial writings | |
| virtual bool | fichier_global_inherited_read (char *a, U_I size, U_I &read, std::string &message) override |
| replaces generic_file::inherited_read() method, to allow the return of partial reading | |
| virtual void | inherited_truncate (const infinint &pos) override |
| truncate file at the give offset | |
| virtual void | inherited_sync_write () override |
| write down any pending data | |
| virtual void | inherited_flush_read () override |
| reset internal engine, flush caches in order to read the data at current position | |
| virtual void | inherited_terminate () override |
| destructor-like call, except that it is allowed to throw exceptions | |
Protected Member Functions inherited from libdar::fichier_global | |
Protected Member Functions inherited from libdar::generic_file | |
| void | set_mode (gf_mode x) |
| bool | is_terminated () const |
Protected Member Functions inherited from libdar::mem_ui | |
| user_interaction & | get_ui () const |
| get access to the user_interaction object | |
| std::shared_ptr< user_interaction > | get_pointer () const |
| get access to the shared_ptr pointing to the user_interaction | |
Private Attributes | |
| fichier_global * | ref |
| fichier_global * | hash_ref |
| bool | only_hash |
| if set, avoids copying data to file, only compute hash (debugging purpose) | |
| std::string | ref_filename |
| U_I | hash_gcrypt |
| bool | eof |
| bool | hash_dumped |
Additional Inherited Members | |
Public Types inherited from libdar::fichier_global | |
| enum | advise { advise_normal , advise_sequential , advise_random , advise_noreuse , advise_willneed , advise_dontneed } |
Public Types inherited from libdar::generic_file | |
| enum | skippability { skip_backward , skip_forward } |
Static Public Member Functions inherited from libdar::thread_cancellation | |
| static U_I | count () |
| method for debugging/control purposes | |
manages the generation of a hash
Definition at line 59 of file hash_fichier.hpp.
| libdar::hash_fichier::hash_fichier | ( | const std::shared_ptr< user_interaction > & | dialog, |
| fichier_global * | under, | ||
| const std::string & | under_filename, | ||
| fichier_global * | hash_file, | ||
| hash_algo | algo ) |
hash_file constructor
| [in] | dialog | for user interaction |
| [in] | under | points to an object where to write data to |
| [in] | under_filename | name of the plain file we write to, this argument is required to build the hash file |
| [in] | hash_file | points to an object where to drop the hash file once writings are finished |
| [in] | algo | hash algorithm to use. hash_none is not an acceptable value |
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inlineoverridevirtual |
set the ownership of the file
Implements libdar::fichier_global.
Definition at line 94 of file hash_fichier.hpp.
References libdar::fichier_global::change_ownership().
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inlineoverridevirtual |
change the permission of the file
Implements libdar::fichier_global.
Definition at line 95 of file hash_fichier.hpp.
References libdar::fichier_global::change_permission().
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inlineoverridevirtual |
set posix_fadvise for the whole file
Implements libdar::fichier_global.
Definition at line 97 of file hash_fichier.hpp.
References libdar::fichier_global::fadvise().
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overrideprotectedvirtual |
replaces generic_file::inherited_read() method, to allow the return of partial reading
a partial reading is signaled by the inherited class by returning false
| [in] | a | points to the area where to store read data |
| [in] | size | is the available place to store data |
| [out] | read | is the total amount of data read so far |
| [out] | message | is the request to send to the user upon partial reading |
Implements libdar::fichier_global.
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overrideprotectedvirtual |
replaces generic_file::inherited_write() method, to allow the return of partial writings
a partial writing is allowed when no space is available for writing this let global_ficher interact with the user asking whether it can make place or if (s)he wants to abort
| [in] | a | points to the start of the area of data to write |
| [in] | size | is the size in byte of the data to write |
Implements libdar::fichier_global.
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inlineoverridevirtual |
get the current read/write position
Implements libdar::generic_file.
Definition at line 105 of file hash_fichier.hpp.
References libdar::generic_file::get_position().
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inlineoverridevirtual |
return the size of the file
Implements libdar::fichier_global.
Definition at line 96 of file hash_fichier.hpp.
References libdar::fichier_global::get_size().
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inlineoverrideprotectedvirtual |
reset internal engine, flush caches in order to read the data at current position
Implements libdar::generic_file.
Definition at line 119 of file hash_fichier.hpp.
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inlineoverrideprotectedvirtual |
tells the object that several calls to read() will follow to probably obtain at least the given amount of data
| [in] | amount | is the maximum expected amount of data that is known to be read |
Implements libdar::generic_file.
Definition at line 112 of file hash_fichier.hpp.
References libdar::generic_file::read_ahead().
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inlineoverrideprotectedvirtual |
write down any pending data
Implements libdar::generic_file.
Definition at line 118 of file hash_fichier.hpp.
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overrideprotectedvirtual |
destructor-like call, except that it is allowed to throw exceptions
Implements libdar::generic_file.
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inlineoverrideprotectedvirtual |
truncate file at the give offset
Implements libdar::generic_file.
Definition at line 117 of file hash_fichier.hpp.
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inline |
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inlineoverridevirtual |
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 101 of file hash_fichier.hpp.
References libdar::generic_file::get_position().
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inlineoverridevirtual |
skip relatively to the current position
Implements libdar::generic_file.
Definition at line 103 of file hash_fichier.hpp.
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inlineoverridevirtual |
skip to the end of file
Implements libdar::generic_file.
Definition at line 102 of file hash_fichier.hpp.
References libdar::generic_file::get_mode(), and libdar::gf_write_only.
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inlineoverridevirtual |
whether the implementation is able to skip
Implements libdar::generic_file.
Definition at line 100 of file hash_fichier.hpp.
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inlineoverridevirtual |
whether the implementation is able to truncate to the given position
Implements libdar::generic_file.
Definition at line 104 of file hash_fichier.hpp.
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private |
Definition at line 131 of file hash_fichier.hpp.
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private |
Definition at line 132 of file hash_fichier.hpp.
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private |
Definition at line 130 of file hash_fichier.hpp.
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private |
Definition at line 124 of file hash_fichier.hpp.
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private |
if set, avoids copying data to file, only compute hash (debugging purpose)
Definition at line 125 of file hash_fichier.hpp.
Referenced by set_only_hash().
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private |
Definition at line 123 of file hash_fichier.hpp.
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private |
Definition at line 129 of file hash_fichier.hpp.