HDiffPatch

a C\C++ library and command-line tools for Diff & Patch between binary files or directories(folder); cross-platform; runs fast; create small delta/differential; support large files and limit memory requires when diff & patch.

HDiffPatch defines its own patch file format, this lib is also compatible with the bsdiff4 patch format and partially compatible with the open-vcdiff and xdelta3 patch file format VCDIFF(RFC 3284).

if need patch (OTA) on embedded systems,MCU,NB-IoT..., see demo HPatchLite (+ tinyuz), can run on 1KB RAM devices!

update your own Android Apk? Jar or Zip file diff & patch? try ApkDiffPatch, to create smaller delta/differential! NOTE: ApkDiffPath can't be used by Android app store, because it requires re-signing apks before diff.

sfpatcher not require re-signing apks (like archive-patcher), is designed for Android app store, patch speed up by a factor of xx than archive-patcher & run with O(1) memory.

if you not have the old versions(too many or not obtain or have been modified), thus cannot create the delta in advance. you can see demo hsynz (like zsync), the new version is only need released once and the owners of the old version get the information about the new version and do the diff&patch themselves. hsynz support zstd compressor & run faster than zsync.

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.

---

Releases/Binaries

Download from latest release : Command line app for Windows, Linux, MacOS; and .so patch lib for Android.
( release files build by projects in path HDiffPatch/builds )
use cmdline to create a delta:
$hdiffz -m-6 -SD -c-zstd-21-24 -d oldPath newPath outDiffFile
if file'size is very large, try changing -m-6 to -s-64
apply the delta:
$hpatchz oldPath diffFile outNewPath

Build it yourself

$ cd <dir>/HDiffPatch

Linux or MacOS X

Try:
$ make LZMA=0 ZSTD=0 MD5=0
bzip2 : if the build fails with fatal error: bzlib.h: No such file or directory, use your system's package manager to install the libbz2 package and try again. install bzip2: $ apt-get install libbz2 or $ sudo apt-get install libbz2-dev or $ yum -y install bzip2 or $ brew install bzip2 ...
Alternatively, get the optional library headers (+bzip2 library) and build completely: $ git clone https://github.com/sisong/bzip2.git ../bzip2 && pushd ../bzip2 && make && sudo make install && popd

if need lzma zstd md5 support, Try:

$ git clone https://github.com/sisong/libmd5.git ../libmd5
$ git clone https://github.com/sisong/lzma.git ../lzma
$ git clone https://github.com/sisong/zstd.git ../zstd
$ make

Tip: You can use $ make -j to compile in parallel.

Windows

Before you build builds/vc/HDiffPatch.sln by Visual Studio, first get the libraries into sibling folders, like so:

$ git clone https://github.com/sisong/libmd5.git ../libmd5
$ git clone https://github.com/sisong/lzma.git ../lzma
$ git clone https://github.com/sisong/zstd.git ../zstd
$ git clone https://github.com/sisong/zlib.git   ../zlib
$ git clone https://github.com/sisong/bzip2.git  ../bzip2

libhpatchz.so for Android

• install Android NDK
• $ cd <dir>/HDiffPatch/builds/android_ndk_jni_mk
• $ build_libs.sh (or $ build_libs.bat on windows, then got *.so files)
• import file com/github/sisong/HPatch.java (from HDiffPatch/builds/android_ndk_jni_mk/java/) & .so files, java code can call the patch function in libhpatchz.so

---

command line usage Chinese version: 命令行使用说明中文版

diff command line usage:

diff usage: hdiffz [options] oldPath newPath outDiffFile
compress usage: hdiffz [-c-...] "" 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*parallelThreadNumber)bytes of memory;
      matchBlockSize>=4, DEFAULT -s-64, recommended 16,32,48,1k,64k,1m etc...
special options:
  -block-fastMatchBlockSize
      must run with -m;
      set block match befor slow byte-by-byte match, DEFAULT -block-4k;
      if set -block-0, means don't use block match;
      fastMatchBlockSize>=4, recommended 256,1k,64k,1m etc...
      if newData similar to oldData then diff speed++ & diff memory--,
      but small possibility outDiffFile's size+
  -cache
      must run with -m;
      set is use a big cache for slow match, DEFAULT false;
      if newData not similar to oldData then diff speed++,
      big cache max used O(oldFileSize) memory, and build slow(diff speed--)
  -SD[-stepSize]
      create single compressed diffData, only need one decompress buffer
      when patch, and support step by step patching when step by step downloading!
      stepSize>=(1024*4), DEFAULT -SD-256k, recommended 64k,2m etc...
  -BSD
      create diffFile compatible with bsdiff4, unsupport input directory(folder).
  -VCD[-compressLevel[-dictSize]]
      create diffFile compatible with VCDIFF, unsupport input directory(folder).
      DEFAULT no compress, out format same as $open-vcdiff delta ... or $xdelta3 -S -e -n ...
      if set compressLevel, out format same as $xdelta3 -S lzma -e -n ...
      compress by 7zXZ(xz), compressLevel in {0..9}, DEFAULT level 7;
      dictSize can like 4096 or 4k or 4m or 16m etc..., DEFAULT 8m
      support compress by multi-thread parallel.
      NOTE: out diffFile used large source window size!
  -p-parallelThreadNumber
      if parallelThreadNumber>1 then open multi-thread Parallel mode;
      DEFAULT -p-4; requires more memory!
  -p-search-searchThreadNumber
      must run with -s[-matchBlockSize];
      DEFAULT searchThreadNumber same as parallelThreadNumber;
      but multi-thread search need frequent random disk reads when matchBlockSize
      is small, so some times multi-thread maybe much slower than single-thread!
      if (searchThreadNumber<=1) then to close multi-thread search mode.
  -c-compressType[-compressLevel]
      set outDiffFile Compress type, DEFAULT uncompress;
      for resave diffFile,recompress diffFile to outDiffFile by new set;
      support compress type & level & dict:
        -c-zlib[-{1..9}[-dictBits]]     DEFAULT level 9
            dictBits can 9--15, DEFAULT 15.
            support run by multi-thread parallel, fast!
        -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-zstd[-{0..22}[-dictBits]]    DEFAULT level 20
            dictBits can 10--31, DEFAULT 23.
            support run by multi-thread parallel, fast!
  -C-checksumType
      set outDiffFile Checksum type for directory diff, DEFAULT -C-fadler64;
      support checksum type:
        -C-no                   no checksum
        -C-crc32
        -C-fadler64             DEFAULT
        -C-md5
  -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.
  --patch
      swap to hpatchz mode.
  -v  output Version info.
  -h (or -?)
      output usage info.

patch command line usage:

patch usage: hpatchz [options] oldPath diffFile outNewPath
uncompress usage: hpatchz [options] "" 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 "./")

memory options:
  -s[-cacheSize]
      DEFAULT -s-4m; oldPath loaded as Stream;
      cacheSize can like 262144 or 256k or 512m or 2g etc....
      requires (cacheSize + 4*decompress buffer size)+O(1) bytes of memory.
      if diffFile is single compressed diffData(created by hdiffz -SD-stepSize), then requires
        (cacheSize+ stepSize + 1*decompress buffer size)+O(1) bytes of memory;
      if diffFile is created by hdiffz -BSD,bsdiff4, hdiffz -VCD,xdelta3,open-vcdiff, then requires
        (cacheSize + 3*decompress buffer size)+O(1) bytes of memory;
      if diffFile is VCDIFF: if created by hdiffz -VCD, then recommended patch by -s;
          if created by xdelta3,open-vcdiff, then recommended patch by -m.
  -m  oldPath all loaded into Memory;
      requires (oldFileSize + 4*decompress buffer size)+O(1) bytes of memory.
      if diffFile is single compressed diffData(created by hdiffz -SD-stepSize), then requires
        (oldFileSize+ stepSize + 1*decompress buffer size)+O(1) bytes of memory.
      if diffFile is created by hdiffz -BSD,bsdiff4, then requires
        (oldFileSize + 3*decompress buffer size)+O(1) bytes of memory.
      if diffFile is VCDIFF(created by hdiffz -VCD,xdelta3,open-vcdiff), then requires
        (sourceWindowSize+targetWindowSize + 3*decompress buffer size)+O(1) bytes of memory.
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;
  -C-no or -C-new
      if diffFile is VCDIFF, then to close or open checksum, DEFAULT -C-new.
  -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.
  -v  output Version info.
  -h  (or -?)
      output usage info.

---

library API usage:

all diff&patch function in file: libHDiffPatch/HDiff/diff.h & libHDiffPatch/HPatch/patch.h
dir_diff() & dir patch in: dirDiffPatch/dir_diff/dir_diff.h & dirDiffPatch/dir_patch/dir_patch.h

manual:

• create diff(in newData,in oldData,out diffData); release the diffData for update oldData.
• patch(out newData,in oldData,in diffData); ok , get the newData.

v1 API, uncompressed diffData:

• create_diff()
• patch()
• patch_stream()
• patch_stream_with_cache()

v2 API, compressed diffData:

• create_compressed_diff()
• create_compressed_diff_stream()
• resave_compressed_diff()
• patch_decompress()
• patch_decompress_with_cache()
• patch_decompress_mem()

v3 API, diff&patch between directories(folder):

• dir_diff()
• TDirPatcher_*() functions with struct TDirPatcher

v4 API, single compressed diffData:

• create_single_compressed_diff()
• create_single_compressed_diff_stream()
• resave_single_compressed_diff()
• patch_single_stream()
• patch_single_stream_mem()
• patch_single_compressed_diff()
• patch_single_stream_diff()

hpatch lite API, optimized hpatch on MCU,NB-IoT... (demo HPatchLite):

• create_lite_diff()
• hpatch_lite_open()
• hpatch_lite_patch()

bsdiff wrapper API:

• create_bsdiff()
• create_bsdiff_stream()
• bspatch_with_cache()

vcdiff wrapper API:

• create_vcdiff()
• create_vcdiff_stream()
• vcpatch_with_cache()

hsynz API, diff&patch by sync (demo hsynz):

• create_sync_data()
• create_dir_sync_data()
• sync_patch()
• sync_patch_...()
• sync_local_diff()
• sync_local_diff_...()
• sync_local_patch()
• sync_local_patch_...()

---

HDiffPatch vs BsDiff & xdelta:

case list(download from OneDrive):

	newFile <-- oldFile	newSize	oldSize
1	7-Zip_22.01.win.tar <-- 7-Zip_21.07.win.tar	5908992	5748224
2	Chrome_107.0.5304.122-x64-Stable.win.tar <-- 106.0.5249.119	278658560	273026560
3	cpu-z_2.03-en.win.tar <-- cpu-z_2.02-en.win.tar	8718336	8643072
4	curl_7.86.0.src.tar <-- curl_7.85.0.src.tar	26275840	26030080
5	douyin_1.5.1.mac.tar <-- douyin_1.4.2.mac.tar	407940608	407642624
6	Emacs_28.2-universal.mac.tar <-- Emacs_27.2-3-universal.mac.tar	196380160	257496064
7	FFmpeg-n_5.1.2.src.tar <-- FFmpeg-n_4.4.3.src.tar	80527360	76154880
8	gcc_12.2.0.src.tar <-- gcc_11.3.0.src.tar	865884160	824309760
9	git_2.33.0-intel-universal-mavericks.mac.tar <-- 2.31.0	73302528	70990848
10	go_1.19.3.linux-amd64.tar <-- go_1.19.2.linux-amd64.tar	468835840	468796416
11	jdk_x64_mac_openj9_16.0.1_9_openj9-0.26.0.tar <-- 9_15.0.2_7-0.24.0	363765760	327188480
12	jre_1.8.0_351-linux-x64.tar <-- jre_1.8.0_311-linux-x64.tar	267796480	257996800
13	linux_5.19.9.src.tar <-- linux_5.15.80.src.tar	1269637120	1138933760
14	Minecraft_175.win.tar <-- Minecraft_172.win.tar	166643200	180084736
15	OpenOffice_4.1.13.mac.tar <-- OpenOffice_4.1.10.mac.tar	408364032	408336896
16	postgresql_15.1.src.tar <-- postgresql_14.6.src.tar	151787520	147660800
17	QQ_9.6.9.win.tar <-- QQ_9.6.8.win.tar	465045504	464837120
18	tensorflow_2.10.1.src.tar <-- tensorflow_2.8.4.src.tar	275548160	259246080
19	VSCode-win32-x64_1.73.1.tar <-- VSCode-win32-x64_1.69.2.tar	364025856	340256768
20	WeChat_3.8.0.41.win.tar <-- WeChat_3.8.0.33.win.tar	505876992	505018368

test PC: Windows11, CPU R9-7945HX, SSD PCIe4.0x4 4T, DDR5 5200MHz 32Gx2
Program version: HDiffPatch4.6.3, hsynz 0.9.3, BsDiff4.3, xdelta3.1, zstd1.5.2
test Program:
zstd --patch-from diff with --ultra -21 --long=24 -f --patch-from={old} {new} -o {pat}
zstd patch with -d -f --memory=2047MB --patch-from={old} {pat} -o {new}
xdelta3 diff with -S lzma -e -9 -n -f -s {old} {new} {pat}
xdelta3 patch with -d -f -s {old} {pat} {new}
& adding hpatchz test: hpatchz -m -f {old} {xdelta3-pat} {new}
xdelta3 -B diff with -S lzma -B {oldSize} -e -9 -n -f -s {old} {new} {pat}
xdelta3 -B patch with -B {oldSize} -d -f -s {old} {pat} {new}
& adding hpatchz test: hpatchz -m -f {old} {xdelta3-B-pat} {new}
bsdiff diff with {old} {new} {pat}
bspatch patch with {old} {new} {pat}
& adding hpatchz test: hpatchz -m -f {old} {bsdiff-pat} {new}
hdiffz -BSD diff with -m-6 -BSD -d -f -p-1 {old} {new} {pat}
hdiffz zlib diff with -m-6 -SD -d -f -p-1 -c-zlib-9 {old} {new} {pat}
hdiffz lzma2 diff with -m-6 -SD -d -f -p-1 -c-lzma2-9-16m {old} {new} {pat}
hdiffz zstd diff with -m-6 -SD -d -f -p-1 -c-zstd-21-24 {old} {new} {pat}
hdiffz -s zlib diff with -s-64 -SD -d -f -p-1 -c-zlib-9 {old} {new} {pat}
hdiffz -s lzma2 diff with -s-64 -SD -d -f -p-1 -c-lzma2-9-16m {old} {new} {pat}
hdiffz -s zstd diff with -s-64 -SD -d -f -p-1 -c-zstd-21-24 {old} {new} {pat}
& adding all hdiffz test with -p-8
hpatchz patch with -s-3m -f {old} {pat} {new}
hsynz test, make sync info by hsync_make -s-2k {new} {out_newi} {out_newz},
client sync diff&patch by hsync_demo {old} {newi} {newz} {out_new} -p-1
hsynz p1 zlib run hsync_make with -p-1 -c-zlib-9
hsynz p8 zlib run hsync_make with -p-8 -c-zlib-9 (run hsync_demo with -p-8)
hsynz p1 zstd run hsync_make with -p-1 -c-zstd-21-24
hsynz p8 zstd run hsync_make with -p-8 -c-zstd-21-24 (run hsync_demo with -p-8)

test result average:

Program	compress	diff mem	speed	patch mem	max mem	speed
bzip2-9	33.67%		22.9MB/s			66MB/s
zlib-9	36.53%		19.8MB/s			539MB/s
lzma2-9-16m	25.85%		5.3MB/s			215MB/s
zstd-21-24	27.21%		4.2MB/s			976MB/s
zstd --patch-from	7.96%	2798M	3.3MB/s	629M	2303M	828MB/s
xdelta3	13.60%	409M	6.9MB/s	86M	102M	159MB/s
xdelta3 +hpatchz -m	13.60%	409M	6.9MB/s	70M	82M	377MB/s
xdelta3 -B	9.63%	2282M	10.9MB/s	460M	2070M	267MB/s
xdelta3 -B +hpatchz -m	9.63%	2282M	10.9MB/s	315M	1100M	477MB/s
bsdiff	8.17%	2773M	2.5MB/s	637M	2312M	167MB/s
bsdiff +hpatchz -m	8.17%	2773M	2.5MB/s	321M	1101M	197MB/s
hdiffz p1 -BSD	7.72%	1210M	13.4MB/s	14M	14M	172MB/s
hdiffz p8 -BSD	7.72%	1191M	31.2MB/s	14M	14M	172MB/s
hdiffz p1 zlib	7.79%	1214M	14.4MB/s	4M	4M	564MB/s
hdiffz p8 zlib	7.79%	1190M	44.8MB/s	4M	4M	559MB/s
hdiffz p1 lzma2	6.44%	1209M	11.4MB/s	16M	20M	431MB/s
hdiffz p8 lzma2	6.44%	1191M	33.4MB/s	16M	20M	428MB/s
hdiffz p1 zstd	6.74%	1211M	11.5MB/s	16M	21M	592MB/s
hdiffz p8 zstd	6.74%	1531M	24.3MB/s	16M	21M	586MB/s
hdiffz -s p1 -BSD	11.96%	91M	46.0MB/s	14M	14M	148MB/s
hdiffz -s p8 -BSD	11.96%	95M	59.8MB/s	14M	14M	148MB/s
hdiffz -s p1 zlib	12.52%	91M	46.4MB/s	3M	4M	611MB/s
hdiffz -s p8 zlib	12.53%	95M	178.9MB/s	3M	4M	609MB/s
hdiffz -s p1 lzma2	9.11%	170M	18.1MB/s	17M	20M	402MB/s
hdiffz -s p8 lzma2	9.13%	370M	50.6MB/s	17M	20M	400MB/s
hdiffz -s p1 zstd	9.60%	195M	18.0MB/s	17M	21M	677MB/s
hdiffz -s p8 zstd	9.60%	976M	28.5MB/s	17M	21M	678MB/s
hsynz p1 zlib	20.05%	6M	17.7MB/s	6M	21M	160MB/s
hsynz p8 zlib	20.05%	30M	119.5MB/s	13M	29M	246MB/s
hsynz p1 zstd	14.97%	531M	1.9MB/s	24M	35M	173MB/s
hsynz p8 zstd	14.96%	3349M	10.2MB/s	24M	35M	278MB/s

input Apk Files for test:

case list:

	app	newFile <-- oldFile	newSize	oldSize
1		cn.wps.moffice_eng_13.30.0.apk <-- 13.29.0	95904918	94914262
2		com.achievo.vipshop_7.80.2.apk <-- 7.79.9	127395632	120237937
3		com.adobe.reader_22.9.0.24118.apk <-- 22.8.1.23587	27351437	27087718
4		com.alibaba.android.rimet_6.5.50.apk <-- 6.5.45	195314449	193489159
5		com.amazon.mShop.android.shopping_24.18.2.apk <-- 24.18.0	76328858	76287423
6		com.baidu.BaiduMap_16.5.0.apk <-- 16.4.5	131382821	132308374
7		com.dragon.read_5.5.3.33.apk <-- 5.5.1.32	45112658	43518658
8		com.ebay.mobile_6.80.0.1.apk <-- 6.79.0.1	61202587	61123285
9		com.eg.android.AlipayGphone_10.3.0.apk <-- 10.2.96	122073135	119046208
10		com.google.android.apps.translate_6.46.0.apk <-- 6.45.0	48892967	48843378
11		com.google.android.googlequicksearchbox_13.38.11.apk <-- 13.37.10	190539272	189493966
12		com.jingdong.app.mall_11.3.2.apk <-- 11.3.0	101098430	100750191
13		com.netease.cloudmusic_8.8.45.apk <-- 8.8.40	181914846	181909451
14		com.reddit.frontpage_2022.36.0.apk <-- 2022.34.0	50205119	47854461
15		com.sankuai.meituan.takeoutnew_7.94.3.apk <-- 7.92.2	74965893	74833926
16		com.sankuai.meituan_12.4.207.apk <-- 12.4.205	93613732	93605911
17		com.sina.weibo_12.10.0.apk <-- 12.9.5	156881776	156617913
18		com.smile.gifmaker_10.8.40.27845.apk <-- 10.8.30.27728	102403847	101520138
19		com.ss.android.article.news_9.0.7.apk <-- 9.0.6	54444003	53947221
20		com.ss.android.ugc.aweme_22.6.0.apk <-- 22.5.0	171683897	171353597
21		com.taobao.taobao_10.18.10.apk <-- 10.17.0	117218670	117111874
22		com.tencent.mm_8.0.28.apk <-- 8.0.27	266691829	276603782
23		com.tencent.mobileqq_8.9.15.apk <-- 8.9.13	311322716	310529631
24		com.tencent.mtt_13.2.0.0103.apk <-- 13.2.0.0045	97342747	97296757
25		com.tripadvisor.tripadvisor_49.5.apk <-- 49.3	28744498	28695346
26		com.twitter.android_9.61.0.apk <-- 9.58.2	36141840	35575484
27		com.ubercab_4.442.10002.apk <-- 4.439.10002	69923232	64284150
28		com.ximalaya.ting.android_9.0.66.3.apk <-- 9.0.62.3	115804845	113564876
29		com.xunmeng.pinduoduo_6.30.0.apk <-- 6.29.1	30896833	30951567
30		com.youdao.dict_9.2.29.apk <-- 9.2.28	110624682	110628778
31		org.mozilla.firefox_105.2.0.apk <-- 105.1.0	83078464	83086656
32		tv.danmaku.bili_7.1.0.apk <-- 7.0.0	104774723	104727005

changed test Program:
hdiffz ... -m-6 -SD changed to -m-1 -SD-2m -cache, -s-64 -SD changed to -s-16 -SD-2m
hdiffz ... lzma2 dict size 16m changed to 8m, zstd dict bit 24 changed to 23
hsynz ... make -s-2k changed to -s-1k
& adding hsynz p1, hsynz p8 make without compressor
archive-patcher v1.0, diff with --generate --old {old} --new {new} --patch {pat},
patch with --apply --old {old} --patch {pat} --new {new}
NOTE: archive-patcher's delta file compressed by lzma2-9-16m, diff&patch time not include compress&decompress delta file's memory&time.
sfpatcher -1 zstd v1.1.1 diff with -o-1 -c-zstd-21-23 -m-1 -step-3m -lp-512k -p-8 -cache -d {old} {new} {pat}
sfpatcher -2 lzma2 diff with -o-2 -c-lzma2-9-4m -m-1 -step-2m -lp-8m -p-8 -cache -d {old} {new} {pat}
sfpatcher patch with -lp -p-8 {old} {pat} {new}
adding test hpatchz&hsynz&sfpatcher on Android, CPU Kirin 980(2×A76 2.6G + 2×A76 1.92G + 4×A55 1.8G)
( archive-patcher, sfpatcher optimized diff&patch between apk files )

test result average:

Program	compress	diff mem	speed	patch mem	max mem	speed	Kirin 980
zstd --patch-from	53.18%	2199M	3.6MB/s	209M	596M	609MB/s
xdelta3	54.51%	422M	3.8MB/s	98M	99M	170MB/s
xdelta3 +hpatchz -m	54.51%	422M	3.8MB/s	70M	81M	438MB/s
bsdiff	53.84%	931M	1.2MB/s	218M	605M	54MB/s
bsdiff+hpatchz -m	53.84%	931M	1.2MB/s	116M	310M	57MB/s
bsdiff+hpatchz -s	53.84%	931M	1.2MB/s	14M	14M	54MB/s
hdiffz p1 -BSD	53.69%	509M	6.8MB/s	14M	14M	55MB/s
hdiffz p8 -BSD	53.70%	514M	15.3MB/s	14M	14M	55MB/s
hdiffz p1	54.40%	509M	8.8MB/s	5M	6M	682MB/s
hdiffz p8	54.41%	514M	32.4MB/s	5M	6M	686MB/s	443MB/s
hdiffz p1 zlib	53.21%	509M	8.2MB/s	5M	6M	514MB/s
hdiffz p8 zlib	53.22%	514M	31.1MB/s	5M	6M	512MB/s	343MB/s
hdiffz p1 lzma2	52.93%	525M	4.1MB/s	21M	22M	260MB/s
hdiffz p8 lzma2	52.94%	557M	18.9MB/s	21M	22M	261MB/s	131MB/s
hdiffz p1 zstd	53.04%	537M	5.4MB/s	21M	22M	598MB/s
hdiffz p8 zstd	53.05%	1251M	11.1MB/s	21M	22M	604MB/s	371MB/s
hdiffz -s p1 zlib	53.73%	118M	26.8MB/s	4M	6M	513MB/s
hdiffz -s p8 zlib	53.73%	122M	97.3MB/s	4M	6M	513MB/s
hdiffz -s p1 lzma2	53.30%	197M	6.4MB/s	20M	22M	258MB/s
hdiffz -s p8 lzma2	53.30%	309M	32.4MB/s	20M	22M	258MB/s
hdiffz -s p1 zstd	53.44%	221M	10.1MB/s	20M	22M	620MB/s
hdiffz -s p8 zstd	53.44%	1048M	14.4MB/s	20M	22M	613MB/s
hsynz p1	62.43%	4M	1647.6MB/s	4M	9M	152MB/s	55MB/s
hsynz p8	62.43%	6M	2563.7MB/s	11M	18M	270MB/s	107MB/s
hsynz p1 zlib	58.67%	5M	23.7MB/s	4M	11M	151MB/s	54MB/s
hsynz p8 zlib	58.67%	29M	141.8MB/s	12M	19M	265MB/s	96MB/s
hsynz p1 zstd	57.74%	534M	2.7MB/s	24M	28M	151MB/s	52MB/s
hsynz p8 zstd	57.74%	3434M	13.2MB/s	24M	28M	265MB/s	95MB/s
archive-patcher	31.65%	1448M	0.9MB/s	558M	587M	14MB/s
sfpatcher-1 zstd	31.08%	818M	2.3MB/s	15M	19M	201MB/s	92MB/s
sfpatcher-1 zstd	31.07%	1025M	4.6MB/s	18M	25M	424MB/s	189MB/s
sfpatcher-2 lzma2	24.11%	976M	2.1MB/s	15M	20M	37MB/s	19MB/s
sfpatcher-2 lzma2	24.15%	968M	5.0MB/s	20M	26M	108MB/s	45MB/s

---

Contact

housisong@hotmail.com