a C\C++ library and command-line tools for binary data Diff & Patch; fast and create small delta/differential; support large files and directory(folder) and limit memory requires both diff & patch.
( update Android Apk? Jar or Zip file diff & patch? try ApkDiffPatch! )
( NOTE: This library does not deal with file metadata, such as file last wirte time, permissions, link file, etc... To this library, a file is just as a stream of bytes; You can extend this library or use other tools. )
Download from last release : Command line app for Windows , Linux , MacOS; and .so .java for Android.
diff usage: hdiffz [options] oldPath newPath outDiffFile
test usage: hdiffz -t oldPath newPath testDiffFile
resave usage: hdiffz [-c-...] diffFile outDiffFile
get manifest: hdiffz [-g#...] [-C-checksumType] inputPath -M#outManifestTxtFile
manifest diff: hdiffz [options] -M-old#oldManifestFile -M-new#newManifestFile oldPath newPath outDiffFile
oldPath newPath inputPath can be file or directory(folder),
oldPath can empty, and input parameter ""
memory options:
-m[-matchScore]
DEFAULT; all file load into Memory; best diffFileSize;
requires (newFileSize+ oldFileSize*5(or *9 when oldFileSize>=2GB))+O(1)
bytes of memory;
matchScore>=0, DEFAULT -m-6, recommended bin: 0--4 text: 4--9 etc...
-s[-matchBlockSize]
all file load as Stream; fast;
requires O(oldFileSize*16/matchBlockSize+matchBlockSize*5)bytes of memory;
matchBlockSize>=4, DEFAULT -s-64, recommended 16,32,48,1k,64k,1m etc...
special options:
-p-parallelThreadNumber
if parallelThreadNumber>1 then open multi-thread Parallel mode;
DEFAULT -p-4; requires more and more memory!
-c-compressType[-compressLevel]
set outDiffFile Compress type & level, DEFAULT uncompress;
for resave diffFile,recompress diffFile to outDiffFile by new set;
support compress type & level:
(re. https://github.com/sisong/lzbench/blob/master/lzbench171_sorted.md )
-c-zlib[-{1..9}] DEFAULT level 9
-c-pzlib[-{1..9}] DEFAULT level 6
support run by multi-thread parallel, fast!
WARNING: code not compatible with it compressed by -c-zlib!
and code size may be larger than if it compressed by -c-zlib.
-c-bzip2[-{1..9}] (or -bz2) DEFAULT level 9
-c-pbzip2[-{1..9}] (or -pbz2) DEFAULT level 8
support run by multi-thread parallel, fast!
WARNING: code not compatible with it compressed by -c-bzip2!
and code size may be larger than if it compressed by -c-bzip2.
-c-lzma[-{0..9}[-dictSize]] DEFAULT level 7
dictSize can like 4096 or 4k or 4m or 128m etc..., DEFAULT 8m
support run by 2-thread parallel.
-c-lzma2[-{0..9}[-dictSize]] DEFAULT level 7
dictSize can like 4096 or 4k or 4m or 128m etc..., DEFAULT 8m
support run by multi-thread parallel, fast!
WARNING: code not compatible with it compressed by -c-lzma!
-C-checksumType
set outDiffFile Checksum type for directory diff, DEFAULT -C-fadler64;
(if need checksum for diff between two files, add -D)
support checksum type:
-C-no no checksum
-C-crc32
-C-fadler64 DEFAULT
-n-maxOpenFileNumber
limit Number of open files at same time when stream directory diff;
maxOpenFileNumber>=8, DEFAULT -n-48, the best limit value by different
operating system.
-g#ignorePath[#ignorePath#...]
set iGnore path list when Directory Diff; ignore path list such as:
#.DS_Store#desktop.ini#*thumbs*.db#.git*#.svn/#cache_*/00*11/*.tmp
# means separator between names; (if char # in name, need write #: )
* means can match any chars in name; (if char * in name, need write *: );
/ at the end of name means must match directory;
-g-old#ignorePath[#ignorePath#...]
set iGnore path list in oldPath when Directory Diff;
if oldFile can be changed, need add it in old ignore list;
-g-new#ignorePath[#ignorePath#...]
set iGnore path list in newPath when Directory Diff;
in general, new ignore list should is empty;
-M#outManifestTxtFile
create a Manifest file for inputPath; it is a text file, saved infos of
all files and directoriy list in inputPath; this file while be used in
manifest diff, support re-checksum data by manifest diff;
can be used to protect historical versions be modified!
-M-old#oldManifestFile
oldManifestFile is created from oldPath; if no oldPath not need -M-old;
-M-new#newManifestFile
newManifestFile is created from newPath;
-D force run Directory diff between two files; DEFAULT (no -D) run
directory diff need oldPath or newPath is directory.
-d Diff only, do't run patch check, DEFAULT run patch check.
-t Test only, run patch check, patch(oldPath,testDiffFile)==newPath ?
-f Force overwrite, ignore write path already exists;
DEFAULT (no -f) not overwrite and then return error;
if used -f and write path is exist directory, will always return error.
-o DEPRECATED; Original diff, unsupport run with -s -c -C -D;
compatible with "diff_demo.cpp",
diffFile must patch by "patch_demo.c" or "hpatchz -o ..."
-h or -?
output Help info (this usage).
-v output Version info.
patch usage: hpatchz [options] oldPath diffFile outNewPath
create SFX: hpatchz [-X-exe#selfExecuteFile] diffFile -X#outSelfExtractArchive
run SFX: selfExtractArchive [options] oldPath -X outNewPath
extract SFX: selfExtractArchive (same as: selfExtractArchive -f "" -X "./")
( if oldPath is empty input parameter "" )
memory options:
-m oldPath all loaded into Memory;
requires (oldFileSize+ 4*decompress stream size)+O(1) bytes of memory.
-s[-cacheSize]
DEFAULT -s-64m; oldPath loaded as Stream;
requires (cacheSize+ 4*decompress stream size)+O(1) bytes of memory;
cacheSize can like 262144 or 256k or 512m or 2g etc....
special options:
-C-checksumSets
set Checksum data for directory patch, DEFAULT -C-new-copy;
checksumSets support (can choose multiple):
-C-diff checksum diffFile;
-C-old checksum old reference files;
-C-new checksum new files edited from old reference files;
-C-copy checksum new files copy from old same files;
-C-no no checksum;
-C-all same as: -C-diff-old-new-copy;
-n-maxOpenFileNumber
limit Number of open files at same time when stream directory patch;
maxOpenFileNumber>=8, DEFAULT -n-24, the best limit value by different
operating system.
-f Force overwrite, ignore write path already exists;
DEFAULT (no -f) not overwrite and then return error;
support oldPath outNewPath same path!(patch to tempPath and overwrite old)
if used -f and outNewPath is exist file:
if patch output file, will overwrite;
if patch output directory, will always return error;
if used -f and outNewPath is exist directory:
if patch output file, will always return error;
if patch output directory, will overwrite, but not delete
needless existing files in directory.
-o DEPRECATED; Original patch; compatible with "patch_demo.c",
diffFile must created by "diff_demo.cpp" or "hdiffz -o ..."
-h or -?
output Help info (this usage).
-v output Version info.
-
create_diff(newData,oldData,out diffData);
release the diffData for update oldData.
note:create_diff() out uncompressed diffData;
you can compressed it by yourself or use create_compressed_diff()/patch_decompress() create compressed diffData;
if your file size very large or request faster and less memory requires, you can use create_compressed_diff_stream()/patch_decompress(). -
bool patch(out newData,oldData,diffData);
ok , get the newData.
-
patch() runs in O(oldSize+newSize) time , and requires (oldSize+newSize+diffSize)+O(1) bytes of memory;
patch_stream() requires O(1) bytes of memory;
patch_decompress() requires (4*decompress stream size)+O(1) bytes of memory.create_diff() & create_compressed_diff() runs in O(oldSize+newSize) time , and if oldSize < 2G Byte then requires oldSize*5+newSize+O(1) bytes of memory; if oldSize >= 2G Byte then requires oldSize*9+newSize+O(1) bytes of memory;
create_compressed_diff_stream() requires O(oldSize*16/kMatchBlockSize+kMatchBlockSize*5) bytes of memory.
- dir_diff() & dir patch APIs read source code;
system: macOS10.12.6, compiler: xcode8.3.3 x64, CPU: i7 2.5G(turbo3.7G,6MB L3 cache),SSD Disk,Memroy:8G*2 DDR3 1600MHz
(purge file cache before every test)
HDiffPatch2.4 hdiffz run by: -m -c-bzip2-9|-c-lzma-7-4m|-c-zlib-9 oldFile newFile outDiffFile
hpatchz run by: -m oldFile diffFile outNewFile
BsDiff4.3 with bzip2 and all data in memory;
(NOTE: when compiling BsDiff4.3-x64, suffix string index type int64 changed to int32,
faster and memroy requires to be halved!)
=======================================================================================================
Program Uncompressed Compressed Compressed BsDiff hdiffz
(newVersion<--oldVersion) (tar) (bzip2) (lzma) (bzip2) (bzip2 lzma zlib)
-------------------------------------------------------------------------------------------------------
apache-maven-2.2.1-src <--2.0.11 5150720 1213258 1175464 115723 83935 80997 91921
httpd_2.4.4-netware-bin <--2.2.24 22612480 4035904 3459747 2192308 1809555 1616435 1938953
httpd-2.4.4-src <-- 2.2.24 31809536 4775534 4141266 2492534 1882555 1717468 2084843
Firefox-21.0-mac-en-US.app<--20.0 98740736 39731352 33027837 16454403 15749937 14018095 15417854
emacs-24.3 <-- 23.4 185528320 42044895 33707445 12892536 9574423 8403235 10964939
eclipse-java-juno-SR2-macosx
-cocoa-x86_64 <--x86_32 178595840 156054144 151542885 1595465 1587747 1561773 1567700
gcc-src-4.8.0 <--4.7.0 552775680 86438193 64532384 11759496 8433260 7288783 9445004
-------------------------------------------------------------------------------------------------------
Average Compression 100.00% 31.76% 28.47% 6.63% 5.58% 5.01% 5.86%
=======================================================================================================
=======================================================================================================
Program run time(Second) memory(MB) run time(Second) memory(MB)
BsDiff hdiffz BsDiff hdiffz BsPatch hpatchz BsPatch hpatchz
(bzip2)(bzip2) (bzip2)(bzip2) (bzip2) (bzip2 lzma zlib) (bzip2) (bzip2 lzma zlib)
-------------------------------------------------------------------------------------------------------
apache-maven... 1.3 0.4 42 28 0.09 0.04 0.03 0.02 14 8 7 6
httpd bin... 8.6 3.0 148 124 0.72 0.36 0.18 0.13 50 24 23 18
httpd src... 20 5.1 322 233 0.99 0.46 0.24 0.17 78 44 42 37
Firefox... 94 28 829 582 3.0 2.2 1.2 0.57 198 106 106 94
emacs... 109 32 1400 1010 4.9 2.3 1.1 0.78 348 174 168 161
eclipse 100 33 1500 1000 1.5 0.56 0.57 0.50 350 176 174 172
gcc-src... 366 69 4420 3030 7.9 3.5 2.1 1.85 1020 518 517 504
-------------------------------------------------------------------------------------------------------
Average 100% 28.9% 100% 71.5% 100% 52.3% 29.9% 21.3% 100% 52.3% 50.3% 45.5%
=======================================================================================================
HDiffPatch2.4 hdiffz run by: -s-128 -c-bzip2-9 oldFile newFile outDiffFile
hpatchz run by: -s-4m oldFile diffFile outNewFile
xdelta3.1 diff run by: -e -s old_file new_file delta_file
patch run by: -d -s old_file delta_file decoded_new_file
(NOTE fix: xdelta3.1 diff "gcc-src..." fail, add -B 530000000 diff ok,
out 14173073B and used 1070MB memory!)
=======================================================================================================
Program diff run time(Second) memory(MB) patch run time(Second) memory(MB)
xdelta3 hdiffz xdelta3 hdiffz xdelta3 hdiffz xdelta3 hpatchz xdelta3 hpatchz
-------------------------------------------------------------------------------------------------------
apache-maven... 116265 83408 0.16 0.13 65 11 0.07 0.06 12 6
httpd bin... 2174098 2077625 1.1 1.2 157 15 0.25 0.65 30 8
httpd src... 2312990 2034666 1.3 1.7 185 15 0.30 0.91 50 8
Firefox... 28451567 27504156 16 11 225 16 2.0 4.1 100 8
emacs... 31655323 12033450 19 9.4 220 33 3.2 4.0 97 10
eclipse 1590860 1636221 1.5 1.2 207 34 0.46 0.49 77 8
gcc-src... 107003829 12305741 56 19 224 79 9.7 9.5 102 11
(fix 14173073)
-------------------------------------------------------------------------------------------------------
Average 12.18% 7.81% 100% 79.0% 100% 15.5% 100% 169.1% 100% 18.9%
(fix 9.78%)
=======================================================================================================
HDiffPatch2.4 hdiffz run by: -s-64 -c-lzma-7-4m oldFile newFile outDiffFile
hpatchz run by: -s-4m oldFile diffFile outNewFile
xdelta3.1 diff run by: -S lzma -9 -s old_file new_file delta_file
patch run by: -d -s old_file delta_file decoded_new_file
(NOTE fix: xdelta3.1 diff "gcc-src..." fail, add -B 530000000 diff ok,
out 11787978B and used 2639MB memory.)
=======================================================================================================
Program diff run time(Second) memory(MB) patch run time(Second) memory(MB)
xdelta3 hdiffz xdelta3 hdiffz xdelta3 hdiffz xdelta3 hpatchz xdelta3 hpatchz
-------------------------------------------------------------------------------------------------------
apache-maven... 98434 83668 0.37 0.29 220 24 0.04 0.06 12 5
httpd bin... 1986880 1776553 2.5 2.9 356 59 0.24 0.52 30 8
httpd src... 2057118 1794029 3.3 4.2 375 62 0.28 0.78 50 8
Firefox... 27046727 21882343 27 32 416 76 1.8 2.2 100 9
emacs... 29392254 9698236 38 32 413 97 3.1 2.9 97 9
eclipse 1580342 1589045 3.0 1.9 399 76 0.48 0.48 77 6
gcc-src... 95991977 9118368 128 44 417 148 8.9 8.6 102 11
(fix 11787978)
-------------------------------------------------------------------------------------------------------
Average 11.24% 6.44% 100% 88.9% 100% 20.0% 100% 151.1% 100% 17.3%
(fix 9.06%)
=======================================================================================================
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