![JojoDiff [Jojo's Binary Diff]](/data/resource_icons/0/486.jpg?1663458893){kind=icon}
Patcher just like XDelta and HDiffZ. Also, open source.
JDIFF differentiates two files so that the second file can be recreated from the first
by "undiffing". JDIFF aims for the smallest possible diff-file.
For example:
jdiff -j old-file.tar new-file.tar dif-file.jdf
jdiff -u old-file.tar dif-file.jdf new-file2.tar
will recreate new-file2.tar identical to new-file.tar.
jdiff.exe -j -vvv <old file> <new file> <patch file>
jdiff.exe -u -vvv <old file> <patch file> <newfile>
2. Version and history
The current version of this utility is bèta 0.8.4c from September 2020.
Change history:
v0.8.5 Oct 2020 Bugfix in Windows binary, improved internal logic.
v0.8.4 Sept 2020 Improved progress feedback, support for sequential files.
v0.8 Dec 2011 Conversion to C++.
v0.7 Nov 2009 Index table collision strategy for uniform distribution.
v0.6 Apr 2005 Large files support.
v0.5 Sept 2003 Revision of file-buffering logic.
v0.4c Jan 2003 Selection algorithm between multiple matches.
v0.4b Oct 2002 Optimize matches.
v0.4a Sept 2002 Select "best" of multiple matches.
v0.3a July 2002 Copy/insert algorithm.
v0.2c July 2002 Bugfix on divide-by-zero in verbose mode.
v0.2b July 2002 Bugfix on code-length of 252.
v0.2a June 2002 Optimized patch files.
v0.1 June 2002 Insert/delete algorithm.
3. Installation
On Windows systems:
Compiled executables are within the "win" directory.
You can run them from a command prompt.
On Linux systems:
Compile the source by running "make" within the "src" directory or
use the compiled executable within the linux directory.
Copy the resulting executable to your /usr/local/bin.
4. Usage
jdiff -j [options] source_file destination_file [diff_file]
jdiff -u [options] source_file diff_file [destination_file]
Options:
-j JDiff: create a difference file.
-u Undiff: undiff a difference file.
-v --verbose Verbose: greeting, results and tips.
-vv Extra Verbose: progress info and statistics.
-vvv Ultra Verbose: all info, including help and details.
-h -hh --help Help, additional help (-hh) and exit.
-l --listing Detailed human readable output.
-r --regions Grouped human readable output.
-c --console Write verbose and debug info to stdout.
-b --better Better: use more memory, search more.
-bb Best: even more memory, search more.
-f --lazy Lazy: no unbuffered searching (often slower).
-ff Lazier: no full index table.
-p --sequential-source Sequential source (to avoid !) (with - for stdin).
-q --sequential-dest Sequential destination (with - for stdin).
-s --stdio Use stdio files (for testing).
-a --search-size Size (in KB) to search (default=buffer-size).
-i --index-size Size (in MB) for index table (default 64MB).
-k --block-size Block size in bytes for reading (default 8192).
-m --buffer-size Size (in MB) for search buffers (default 2MB).
-n --search-min Minimum number of matches to search (default 2).
-x --search-max Maximum number of matches to search (default 512).
http://jojodiff.sourceforge.net/
By Joris Heirbaut
JDIFF differentiates two files so that the second file can be recreated from the first
by "undiffing". JDIFF aims for the smallest possible diff-file.
For example:
jdiff -j old-file.tar new-file.tar dif-file.jdf
jdiff -u old-file.tar dif-file.jdf new-file2.tar
will recreate new-file2.tar identical to new-file.tar.
jdiff.exe -j -vvv <old file> <new file> <patch file>
jdiff.exe -u -vvv <old file> <patch file> <newfile>
2. Version and history
The current version of this utility is bèta 0.8.4c from September 2020.
Change history:
v0.8.5 Oct 2020 Bugfix in Windows binary, improved internal logic.
v0.8.4 Sept 2020 Improved progress feedback, support for sequential files.
v0.8 Dec 2011 Conversion to C++.
v0.7 Nov 2009 Index table collision strategy for uniform distribution.
v0.6 Apr 2005 Large files support.
v0.5 Sept 2003 Revision of file-buffering logic.
v0.4c Jan 2003 Selection algorithm between multiple matches.
v0.4b Oct 2002 Optimize matches.
v0.4a Sept 2002 Select "best" of multiple matches.
v0.3a July 2002 Copy/insert algorithm.
v0.2c July 2002 Bugfix on divide-by-zero in verbose mode.
v0.2b July 2002 Bugfix on code-length of 252.
v0.2a June 2002 Optimized patch files.
v0.1 June 2002 Insert/delete algorithm.
3. Installation
On Windows systems:
Compiled executables are within the "win" directory.
You can run them from a command prompt.
On Linux systems:
Compile the source by running "make" within the "src" directory or
use the compiled executable within the linux directory.
Copy the resulting executable to your /usr/local/bin.
4. Usage
jdiff -j [options] source_file destination_file [diff_file]
jdiff -u [options] source_file diff_file [destination_file]
Options:
-j JDiff: create a difference file.
-u Undiff: undiff a difference file.
-v --verbose Verbose: greeting, results and tips.
-vv Extra Verbose: progress info and statistics.
-vvv Ultra Verbose: all info, including help and details.
-h -hh --help Help, additional help (-hh) and exit.
-l --listing Detailed human readable output.
-r --regions Grouped human readable output.
-c --console Write verbose and debug info to stdout.
-b --better Better: use more memory, search more.
-bb Best: even more memory, search more.
-f --lazy Lazy: no unbuffered searching (often slower).
-ff Lazier: no full index table.
-p --sequential-source Sequential source (to avoid !) (with - for stdin).
-q --sequential-dest Sequential destination (with - for stdin).
-s --stdio Use stdio files (for testing).
-a --search-size Size (in KB) to search (default=buffer-size).
-i --index-size Size (in MB) for index table (default 64MB).
-k --block-size Block size in bytes for reading (default 8192).
-m --buffer-size Size (in MB) for search buffers (default 2MB).
-n --search-min Minimum number of matches to search (default 2).
-x --search-max Maximum number of matches to search (default 512).
http://jojodiff.sourceforge.net/
By Joris Heirbaut
