EBZip - Revision history

Anonymoususer852: Updated magic, after comparing it with other .ebz files like HONMON.ebz and GAI*.ebz files.

2025-09-05T16:07:28Z

Updated magic, after comparing it with other .ebz files like HONMON.ebz and GAI*.ebz files.

Anonymoususer852: /* EBUZip */ Added note as a possibility to just use EBUZip regardless, instead of needing to keep two compiled binaries or packages that uses slightly different compression libraries.

2025-09-05T15:59:08Z

‎EBUZip: Added note as a possibility to just use EBUZip regardless, instead of needing to keep two compiled binaries or packages that uses slightly different compression libraries.

Anonymoususer852: Restructured content due to separation of EPWING into its own page. Split EBUZip into its own section.

2025-09-02T18:42:51Z

Restructured content due to separation of EPWING into its own page. Split EBUZip into its own section.

Anonymoususer852: Updated magic.

2025-08-20T12:21:59Z

Updated magic.

Anonymoususer852: /* FormatInfo template */ Added Wikidata entry, noting that it only applies to EPWING format, not the compressed variant.

2025-08-16T05:04:48Z

‎FormatInfo template: Added Wikidata entry, noting that it only applies to EPWING format, not the compressed variant.

Anonymoususer852: Typo fixes; "EBZip" for shorter name, not "EBZ" as EBZ is the extension for which the utility creates after compression.

2025-08-15T11:42:21Z

Typo fixes; "EBZip" for shorter name, not "EBZ" as EBZ is the extension for which the utility creates after compression.

Anonymoususer852: Anonymoususer852 moved page EBZ to EBZip: EBZ is the extension. EBZip should be the appropriate name.

2025-08-15T11:40:45Z

Anonymoususer852 moved page EBZ to EBZip: EBZ is the extension. EBZip should be the appropriate name.

Anonymoususer852: /* FormatInfo template */ Add compression and magic. Template info can be found at: http://fileformats.archiveteam.org/wiki/Template:FormatInfo

2025-08-15T04:48:23Z

‎FormatInfo template: Add compression and magic. Template info can be found at: http://fileformats.archiveteam.org/wiki/Template:FormatInfo

Anonymoususer852: /* References (most Japanese only) */ Typo fixes.

2025-08-13T09:59:27Z

‎References (most Japanese only): Typo fixes.

Anonymoususer852: Add notice template, describing the majority of the links are in Japanese only. Removed redundant reference links stating they are in Japanese.

2025-08-13T09:58:58Z

Add notice template, describing the majority of the links are in Japanese only. Removed redundant reference links stating they are in Japanese.

@@ Line 4: / Line 4: @@
 |extensions={{ext|ebz}}
 |compression=lossless
-|magic=45 42 5a 69 70 15 00 00 00 00 00 00 10 00 8b e8
+|magic=45 42 5A 69 70 15 00 00 00 00
 |released=1999<ref>[https://web.archive.org/web/20010619200710/http://www.sra.co.jp/people/m-kasahr/eb/ChangeLog-ja.html ChangeLog - SRA website mirrored on Internet Archive]</ref>
 }}
@@ Line 27: / Line 27: @@
 == Identification ==
-A <code>EBZ</code> file begins with bytes {{magic|45 42 5a 69 70 15 00 00 00 00 00 00 10 00 8b e8}}.
+A <code>EBZ</code> file begins with bytes {{magic|45 42 5a 69 70 15 00 00 00 00}}, in ASCII this would be <code>"EBZip...."</code>.
 == Examples ==

@@ Line 21: / Line 21: @@
 EBUZip is a fork of EBZip that is maintained by Ito Kazuhiro. The 'U' in EBUZip denotes the ability to support JIS X 4081 UTF-8 extensions provided that it is compiled and configured correctly. It also brings in new features that differs from EBZip such as,
 * The ability to use libdeflate algorithm at compile time, which, "is a library for fast, whole-buffer DEFLATE-based compression and decompression."<ref>[https://github.com/ebiggers/libdeflate?tab=readme-ov-file#overview README.md Overview section - libdeflate - GitHub]</ref>, which was added on 2019-06-30.<ref>[http://green.ribbon.to/~ikazuhiro/dic/ebu.html EB Library with UTF-8 extension]</ref>. Additionally, the new maintainer provided benchmark results against uncompressed, zlib and libdeflate.<ref>[http://ikazuhiro.s206.xrea.com/article.php/20190701203038572 Compressing EPWING (using libdeflate)]</ref>
 * Fixes to work on a newer codebase, as opposed to maintaining a series of patches on top of libeb.<ref>[https://sources.debian.org/data/main/e/eb/4.4.3-14/debian/patches/010_debian.patch 010_debian.patch - eb-4.4.3-14 - sources.debian.org]</ref>

@@ Line 3: / Line 3: @@
 |subcat=Compression
 |extensions={{ext|ebz}}
 |compression=lossless
 |magic=45 42 5a 69 70 15 00 00 00 00 00 00 10 00 8b e8
@@ Line 10: / Line 9: @@
 {{notice|1=Majority of the links/citations are in Japanese.}}
-'''Electronic Book Zip or EBZip''' is a compression format used in electronic dictionaries that were distributed primarily on compact discs (CD). The electronic dictionaries stored on computers eliminates the need to have physical media, and allows remote referencing if it was connected to a network, using the likes of <code>dserver</code> or <code>ebnetd</code> for instance. It is likely that compression was needed due to the fact that hard disks were expensive compared to compact discs, when having a number of electronic dictionaries stored on a computer, it made little sense to retain physical media just to reference a number of words every so often, and to juggle around ejecting/inserting discs into the computer. For the expense of sacrificing few CPU cycles and potentially insignificant amount of memory, these electronic dictionaries could be made to take less storage space<ref>[https://web.archive.org/web/20170705202139/http://sci.lang.japan.narkive.com/X84h0clT/kenkyusha-dictionary-cd-and-epwing#post2 Kenkyusha dictionary CD and EPWING - sci.lang.japan NARKIVE - Internet Archive copy]</ref>, and allows faster dictionary lookups due to hard disks allowing random access.
+'''Electronic Book Zip or EBZip''' is a compression format used in electronic dictionaries that were distributed primarily on compact discs (CD). It is also one of the many frontend utilities that uses the EB library for manipulating [[EPWING]] format.
-The compression is lossless, initially using a modified [https://www.zlib.net/ zlib]<ref>[https://github.com/mistydemeo/eb/blob/742248c23cf7769d0fed412cbce458222a437795/zlib/README.altered Last version released with internal zlib - README.altered - version 4.1.3 - Misty De Méo]</ref>, then likely unmodified zlib by the original <code>ebzip</code> author<ref>[https://github.com/mistydemeo/eb/commit/742ddab4f255b7c34d7d1f1b4e3fd245bfc3ea18 Internal zlib removed - Commit 742ddab (4.2) - Misty De Méo]</ref>. Under a new maintainer, [https://github.com/ebiggers/libdeflate libdeflate] was added on 2019-06-30.<ref>[http://green.ribbon.to/~ikazuhiro/dic/ebu.html EB Library with UTF-8 extension]</ref> in addition to having [http://green.ribbon.to/~ikazuhiro/dic/jisx4081u.html JIS X 4081 UTF-8 extension] support. Additionally, the new maintainer provided benchmark results against uncompressed, zlib and libdeflate.<ref>[http://ikazuhiro.s206.xrea.com/article.php/20190701203038572 Compressing EPWING (using libdeflate)]</ref> Do keep in mind that not everything is compressed, EBZ format is not a container like [[ZIP]] for instance, selected files (typically <code>CATALOGS</code> and <code>HONMON</code>) are compressed and have their filenames bearing these extensions, e.g. <code>HONMON.ebz</code>.
+The electronic dictionaries stored on computers eliminates the need to have physical media, and allows remote referencing if it was connected to a network, using the likes of <code>dserver</code> or <code>ebnetd</code> for instance. It is likely that compression was needed due to the fact that hard disks were expensive compared to compact discs, when having a number of electronic dictionaries stored on a computer, it made little sense to retain physical media just to reference a number of words every so often, and to juggle around ejecting/inserting discs into the computer. For the expense of sacrificing few CPU cycles and potentially insignificant amount of memory, these electronic dictionaries could be made to take less storage space<ref>[https://web.archive.org/web/20170705202139/http://sci.lang.japan.narkive.com/X84h0clT/kenkyusha-dictionary-cd-and-epwing#post2 Kenkyusha dictionary CD and EPWING - sci.lang.japan NARKIVE - Internet Archive copy]</ref>, and allows faster dictionary lookups due to hard disks allowing random access.
-Originally intended for electronic dictionaries that were distributed primarily on CD, it is possible to create your own dictionaries using other referencing materials, such as Wikipedia. Modern software transparently handles decompression, eliminating the need to manually decompress.
+The compression is lossless, initially using a modified [https://www.zlib.net/ zlib]<ref>[https://github.com/mistydemeo/eb/blob/742248c23cf7769d0fed412cbce458222a437795/zlib/README.altered Last version released with internal zlib - README.altered - version 4.1.3 - Misty De Méo]</ref>, then likely unmodified zlib by the original <code>ebzip</code> author<ref>[https://github.com/mistydemeo/eb/commit/742ddab4f255b7c34d7d1f1b4e3fd245bfc3ea18 Internal zlib removed - Commit 742ddab (4.2) - Misty De Méo]</ref>. Do keep in mind that not everything is compressed, EBZ format is not a container like [[ZIP]] for instance, selected files (typically <code>CATALOGS</code> and <code>HONMON</code>) are compressed and have their filenames bearing these extensions, e.g. <code>HONMON.ebz</code>.
 == History ==
 EB-like software for Unix-like began circulating on Japanese Usenet as early as September 1991 in the form of [[shar]] by Shingo Nishioka of Osaka University.<ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=NISHIOKA.91Sep3191513@sp4.sanken.osaka-u.ac.jp dserver/Electronic Book Dictionary server & clients (1/2) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=NISHIOKA.91Sep3191550@sp4.sanken.osaka-u.ac.jp dserver/Electronic Book Dictionary server & clients (2/2) - AncientFJ - katsu.watanabe.name]</ref> Versions before 2.1beta of <code>dserver</code> lacked compression, which was introduced as early as 1996-03-25 by Yura Shunsuke.<ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=4j5h0e$2am@isnews.is.s.u-tokyo.ac.jp dserver 2.1-beta patch for compressed dictionary - AncientFJ - katsu.watanabe.name]</ref> Gradually over time, Motoyuki Kasahara, a member of Software Research Associates (SRA) and the author of EB Library, began developing <code>ndtpd</code> which handles electronic dictionary or dictionaries over the network, replacing <code>dserver</code>.<ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5rp4qp$3sk$1@sranhh.sra.co.jp BookView 1.0 - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sctc3$irv$2@sranhh.sra.co.jp BookView 1.0.2 (Re: BookView 1.0) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=64emm8$mcf$1@sranhh.sra.co.jp BookView 1.1 (1/3) - AncientFJ - katsu.watanabe.name]</ref> The first release of such software was around 1997-06-04 as <code>ndtpd-1.0beta0</code> (via FTP) with which it included <code>eb</code> which was a library. Earliest release on fj.sources was 1997-08-07 as <code>ndtpd-1.0</code>, which also describes the relationship between <code>dserver</code> and <code>ndtpd</code>, as [[shar]].<ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc4ns$31a$2@sranhh.sra.co.jp ndtpd 1.0 (0/9) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc4pr$3o1$1@sranhh.sra.co.jp ndtpd 1.0 (1/9) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc4rn$3o1$2@sranhh.sra.co.jp ndtpd 1.0 (2/9) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc4te$3o1$3@sranhh.sra.co.jp ndtpd 1.0 (3/9) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc4vf$3o1$4@sranhh.sra.co.jp ndtpd 1.0 (4/9) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc514$3o1$5@sranhh.sra.co.jp ndtpd 1.0 (5/9) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc52p$3o1$6@sranhh.sra.co.jp ndtpd 1.0 (6/9) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc54s$3o1$7@sranhh.sra.co.jp ndtpd 1.0 (7/9) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc55j$3o1$8@sranhh.sra.co.jp ndtpd 1.0 (8/9) - AncientFJ - katsu.watanabe.name]</ref><ref>[https://katsu.watanabe.name/ancientfj/article.php?mid=5sc56d$3o1$9@sranhh.sra.co.jp ndtpd 1.0 (9/9) - AncientFJ - katsu.watanabe.name]</ref> Until the release of <code>ndtpd-3.0alpha0</code> (2000-06-04), <code>eb</code> has always been included. EB Library began as a separate project with the first release in 1999-06-16 as <code>eb-2.2</code>. Both of these projects continued until the discontinuation of <code>ndtpd</code> (as a release) on 2003-05-24 with the version 3.1.5. <code>eb</code> remained to be maintained until 2010-03-08 with the version 4.4.3.
-It is notable that Ito Kazuhiro (author of EBU - EB Library with JIS X 4081 UTF-8 extension) made a contribution to Motoyuki Kasahara's EB Library on 2000-06-24.<ref>[https://github.com/mistydemeo/eb/blob/master/ChangeLog.1#L1371 ChangeLog.1 (line 1371) - EB Library - Misty De Méo]</ref>.
+== EBUZip ==
 == Identification ==
@@ Line 27: / Line 29: @@
 == Examples ==
-'''These must be executed in the top level of (book) directory that contains <code>CATALOGS</code> file, otherwise it will default to your current directory <code>$(pwd)</code>.''' See [[Wikipedia:ja:EPWING#ファイル構造]] for the directory structure of book layout.
+'''These must be executed in the top level of (book) directory that contains <code>CATALOGS</code> file, otherwise it will default to your current directory <code>$(pwd)</code>.''' See [[EPWING#Content structure]] for the directory structure of book layout.
 Show information about the file:
    ebzip --information
 Decompress files:
-   ebzip --uncompress wikipedia-fpu
+   ebzip --uncompress wikipedia-fpw
 Compress files:
-   ebzip wikipedia-fpu
+   ebzip wikipedia-fpw
 Test files:
-   ebzip --test wikipedia-fpu
+   ebzip --test wikipedia-fpw
 Show help:
    ebzip --help

@@ Line 5: / Line 5: @@
 |wikidata={{wikidata|Q11197749}} (EPWING format only)
 |compression=lossless
-|magic=45 42 5a 69 70 13
+|magic=45 42 5a 69 70 15 00 00 00 00 00 00 10 00 8b e8
 |released=1999<ref>[https://web.archive.org/web/20010619200710/http://www.sra.co.jp/people/m-kasahr/eb/ChangeLog-ja.html ChangeLog - SRA website mirrored on Internet Archive]</ref>
 }}
@@ Line 24: / Line 24: @@
 == Identification ==
-A <code>EBZ</code> file begins with bytes {{magic|45 42 5a 69 70 13}}.
+A <code>EBZ</code> file begins with bytes {{magic|45 42 5a 69 70 15 00 00 00 00 00 00 10 00 8b e8}}.
 == Examples ==

@@ Line 3: / Line 3: @@
 |subcat=Compression
 |extensions={{ext|ebz}}
 |compression=lossless
 |magic=45 42 5a 69 70 13

@@ Line 66: / Line 66: @@
 * [http://green.ribbon.to/~ikazuhiro/dic/ebu.html EBU]
-== References (most Japanese only) ==
+== References (mostly Japanese only) ==
 <references/>