Handbuch:Wie man DjVu mit MediaWiki verwendet
- DjVu leitet hier weiter. Diese Seite erklärt, wie MediaWiki mit DjVu funktionieren könnte. Für die Hilfeseite über wie man eine DjVu-Datei von einer PDF erstellt, siehe Erstellen einer DjVu-Datei.
Wie es funktioniert?
- Handbuch:$wgDjvuDump — Pfad der ausführbaren Datei djvudump.
- Handbuch:$wgDjvuOutputExtension — File extension for the DJVU post processor output.
- Handbuch:$wgDjvuPostProcessor — Path of the DJVU post processor.
- Handbuch:$wgDjvuRenderer — Pfad des ddjvu DjVu-Renderers.
- Handbuch:$wgDjvuToXML — Pfad der ausführbaren Datei djvutoxml.
- Handbuch:$wgDjvuTxt — Pfad der ausführbaren Datei djvutxt.
Wie man unter GNU/Linux installiert
For MediaWiki-Docker , run the following command to install all the necessary packages.
docker compose exec -u 0 mediawiki bash -c 'apt update && apt install djvulibre-bin netpbm'
- Installiere DjVuLibre:
- − Download the DjVuLibre package (which includes "djvudump" and "ddjvu" files). And, in the path:
./configure make make install
- − Or use aptitude or Synaptic in Debian derivatives (package djvulibre-bin)
- − Download the DjVuLibre package (which includes "djvudump" and "ddjvu" files). And, in the path:
- Install netpbm and netpbm-progs packages (use aptitude or Synaptic in Debian derivatives)
- Finally, add (or modify) the code lines below in the LocalSettings.php file (not in the DefaultSettings.php):
$wgFileExtensions[] = 'djvu'; $wgDjvuDump = "djvudump"; $wgDjvuRenderer = "ddjvu"; $wgDjvuTxt = "djvutxt"; $wgDjvuPostProcessor = "pnmtojpeg"; $wgDjvuOutputExtension = 'jpg';
- For better thumbnails quality:
$wgDjvuPostProcessor = "ppmtojpeg -quality=100";
- Can also use png thumbnails with:
$wgDjvuPostProcessor = "pnmtopng";
$wgDjvuOutputExtension = 'png';
Wie man unter Win32 installiert
- Download the DjVuLibre software (which includes "djvudump.exe" and "ddjvu.exe" files).
- Install in
C:\DjVuLibre
(for example). - Download the NetPbm complete package (which includes "pnmtojpeg.exe", "pnmtopng.exe", ... files).
- Install in "C:\GnuWin32\NetPbm"
- Add
C:\GnuWin32\NetPbm\bin
to the WindowsPATH
Environment Variable (and reboot the computer). - Finally, add (or modify) the code lines below in the LocalSettings.php file (not in the DefaultSettings.php):
$wgFileExtensions[] = 'djvu';
$wgDjvuDump = 'C:/DjVuLibre/djvudump.exe';
$wgDjvuRenderer = 'C:/DjVuLibre/ddjvu.exe';
$wgDjvuTxt = 'C:/DjVuLibre/djvutxt.exe';
#$wgDjvuPostProcessor = 'pnmtojpeg.exe';
$wgDjvuOutputExtension = 'jpg';
PHP needs memory to create thumbnails: this means a high "memory_limit" (~ 128MB) in the php.ini.
Wie man unter macOS installiert
- Installiere djvu und netpbm mit Hilfe der Homebrew-Paketverwaltung.
brew install djvulibre netpbm
- Folge den letzten Installationsschritt unter GNU/Linux
Next to do
- Wie man DjVuLibre, Qt und netpbm auf einen Server installiert.
Probleme und Lösungen
- If you got “Error creating thumbnail: terminate called after throwing an instance of 'DJVU::GException' ppmtojpeg: EOF / read error reading magic number” when view file, increase the $wgMaxShellMemory .
- Under
$wgDjvuOutputExtension = 'jpg'
you can force pictures to PNG format with a client-side script. Useful wherever you don′t control MediaWiki setup.
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