# mwlib - MediaWiki parser and utility library

# Overview

mwlib provides a library for parsing MediaWiki articles. It is currently aimed at developers, who have a need to somehow handle MediaWiki articles.

# Installation

Starting with version 0.12.11 released in december 2009 mwlib does not support python 2.4 anymore. Please use an older version of mwlib or upgrade your python installation to 2.6 (or 2.5). python 3.x is currently not supported.

You need to have setuptools/easy_install installed. Installation should be as easy as typing:

    $ easy_install mwlib

If you don't have setuptools installed, download the source package, unpack it and run:

    $ python setup.py install

(this will also install setuptools)

You can also install the latest mwlib development version with:

    $ easy_install mwlib==dev

(However, you need to have re2c installed for that to work).

You will also need:

LaTeX
  LaTeX is used for rendering of mathematical formulas.
perl
  perl is used to drive the `EasyTimeline.pl` script, which produces timeline images.
PIL
  PIL is the Python Imaging Library and is used for image handling.
lxml
  lxml is needed for the docbookwriter.
blahtexml
  Blahtex is a program written in C++, which converts an equation given in a syntax close to TeX into MathML. It is designed by David Harvey and is aimed at supporting equations in MediaWiki. (http://gva.noekeon.org/blahtexml/)
texvc
  texvc (TeX validator and converter) is a program which validates (AMS) LaTeX mathematical expressions and converts them to HTML, MathML, or PNG graphics. (see http://en.wikipedia.org/wiki/Texvc).

# Commands

The commands (i.e. command-line tools) provided by mwlib are described in `docs/commands.txt`.

# Configuration

The format of configuration files is described in `docs/configfiles.txt`.

See `example_conf.py` for an example configuration.

# Contact/Further Information

For further information please visit our Trac instance running at http://code.pediapress.com/. The current development version can also be found there.

# Credits

`mwlib/cdb.py` is based on the cdb implementation from the SpamBayes project ((C) 2002-2004 Python Software Foundation). The remaining parts are distributed under the BSD license:

# Changelog

## 2011-08-12 release 0.12.15

- require lxml.
- dont switch fonts for direction switch chars lrm/rlm
- set teletype style by css
- fix rtl direction check bug
- quick fix in order to support the kbd tag.
- fix switch statements with localized #default case.
- dont remove direction switching nodes
- resolve aliases when expanding templates.
- support localized parser functions.
- make tests work with latest py.test 2.1.
- add support for css direction switching
- Code and Var nodes now use teletype style
- be more verbose when collection params can not be retrieved
- fix subpage links (bugzilla #28055)
- fix for https://bugzilla.wikimedia.org/show_bug.cgi?id=29354
- dont die on treecleaner errors
- remove paragraphs from galleries
- add license templates
- get rid of some more parsing calls
- cache img display info in licensehandler
- speed up getting template args (for licensehandling)
- always show full text of contributors of images
- fix for getAllDisplayText
- add nofilter to licensehandling
- make licensechecker less fragile to bad config format
- improve image license handling
- improve stats for licensechecker
- add custom element to metabook
- dont throw away collapsible boxes. fixes: #935
- decrease api_request_limit
- limit max. simultaneous img downloads to 15
- moar categories. less whitespace. untangle revision/category fetching
- increase standard resolution of images
- fix getting html with revisions
- clean up after fixNesting
- fetch extension images
- prevent adding same api url twice
- retry failed img downloads
- workaround for missing descriptionurl
- fix: descriptionurl returned from api seems be "false" sometimes.
- fix for #925. make syntaxhighlighting work again
- fix for #755
- support older mediawikis
- add lower bound on word splitting hints
- mwlib.refine: parse <caption> tags inside tables
- be more generous when trying to detect see also
- fix for "See Also "Section removal
- fix #905: remove See also sections.
- remove edit links
- magics.py: handle second argument to fullurl magic function.
- convert tiff images to png
- fix for infobox detection
- handle Abbreviation node in xhtmlwriter
- add Abbreviation node
- improve table splitting

## 2010-10-29 release 0.12.14

- magics.py: fix NS magic function.
- refine/core.py: do not parse links if link target would contain newlines.
- setup.py: require lockfile==0.8.
- add xr formatting in #time
- replace mwlib.async with qserve package.
- move fontswitcher to writer dir
- remove collapsible elements
- fix for #830
- move gallery nodes out of tables.
- handle overflow:auto crap
- fix for reference handling
- better handling for references nodes.
- fix for ReferenceLists
- fix whitespace handling and implicit newlines in template arguments. fixes http://code.pediapress.com/wiki/ticket/877.
- Add support for more PageMagic as per http://meta.wikimedia.org/wiki/Help:Magic_words
- Fix PageMagic to consider page as argument
- fetch parsed html from mediawiki and store it as parsed_html.json. We store the raw result from mediawiki since it's not clear what's really needed.
- make mwapi work for non query actions.

## 2010-7-16 release 0.12.13

- omit passwords from error file
- make login work with latest mediawiki.
- use content_type, not content-type in metabooks
- filter crap from ref node names
- try to set GDFONTPATH to some sane value. call EasyTimeline with font argument.
- do not scale easytimeline images after rendering rather scale then in EasyTimeline.pl
- update EasyTimeline to 1.13
- another fix for nested references
- fix for broken tables
- make #IFEXIST handle images
- add treecleaner method to avoid large cells
- fix img alignment
- fix nesting of section with same level
- do not let tablemode get negative.
- fix #815
- call fix_wikipedia_siteinfo based on contents of server (instead of sitename)
- workaround for broken interwikimap. fixes #807
- handle the case, where the <br> ends up in a new paragraph. fixes #804
- move the poem tag implementation to mwlib.refine.core and make it expand templates
- add #ifeq node. fixes #800
- fix for images with spaces in file extensions
- fix and test for #795
- pull tables out of DefinitionDescriptions
- add getVerticalAlign to styleutils
- remove tables from image captions
- remove --clean-cache option to mw-serve
- allow floats as --purge-cache argument
- workaround for buggy lockfile module.
- implement DISPLAYTITLE
- generate higher resolution timelines
- handle abbr and hiero tags
- make sure print_template_pattern is written to nfo.json, when getting it as part of the collection params
- relax odfpy requirement a bit
- make hash-mark only links work again
- remove empty images

## 2009-12-16 release 0.12.12

- dont remove sections containing only images.
- improve handling of galleries
- fix use of uninitialized last variable
- do not 'split' links when expanding templates
- quick workaround for http://code.pediapress.com/wiki/ticket/754

## 2009-12-8 release 0.12.11

- beware python 2.4 is not supported anymore
- parse paragraphs before spans
- parse named urls before links.
- fix urllinks inside links
- fix named urls inside double brackets
- avoid splitting up Reference nodes.
- parse lines/lists before span.
- add getScripts method. improve rtl compat. for fontswitching
- do not replace uniq strings with their content when preprocessing gallery tags. fixes e.g. ref tags inside gallery tags.
- run template expansion for each line in gallery tags
- handle mhr, ace, ckb, mwl interwiki links
- add clearStyles method
- add another condition to avoid single col tables in border-boxes
- refactor node style handling
- remove fixInfoBoxes from treecleaner
- fix for identifiying image license information
- handle closing ul/ol tags inside enumerations
- correctly determine text alignment of node.
- fix for image only table check
- add code for simple rpc servers/clients based on the gevent library.
- add flag for split itemlists
- do not blacklist articles
- add upper limit for font sizes

## 2009-10-20 release 0.12.10

- fix race condition when fetching siteinfo
- introduce flag to suppress automatic escaping when cleaning text
- sent error mails only once
- add 'pageby', 'uml', 'graphviz', 'categorytree', 'summary' to list of tags to ignore

## 2009-10-13 release 0.12.9

- fix #709
- allow higher resolution in math formulas
- fetch collection parameters and use them (template exclusion category,...)
- fix #699
- fix <ref> inside table caption
- refactor filequeue
- adjust table splitting parameter
- move invisible, named references out of table nodes
- fix late #if
- fix bug with inputboxes
- fix parsing of collection pages: titles/subtitles may but do not need to have spaces
- use new default license URL
- fix race condition in mw-serve/mw-watch

## 2009-9-25 release 0.12.8

- fix argument handling in mw-serve Previously it had been possible to overwrite any file by passing arguments containing newlines to mw-serve.

## 2009-9-23 release 0.12.7

- ensure that files extracted from zip files end up in the destination directory.

## 2009-9-15 release 0.12.6

- fix for reference nodes
- allow most characters in urls
- fix for setting content-length in response
- fix problem with blacklisted templates creating preformatted nodes (#630)
- do not split preformatted nodes on non-empty whitespace only lines
- do not create preformatted nodes inside li tags
- pull garbage out of table rows. fix #17.
- dont remove empty spans if an explicit size is given.
- uncomment fix_wikipedia_siteinfo and add pnb as interwiki link
- remove mwxml writer.
- add mw-version program

## 2009-9-8 release 0.12.5

- fix missing page case in get_page when looking for redirects
- some minor bugfixes

## 2009-8-25 release 0.12.3

- better compatibility with older mediawiki installations

## 2009-8-18 release 0.12.2

- fix status callbacks to pod partner

## 2009-8-17 release 0.12.1

- added mw-client and mw-check-service
- mw-serve-ctl can now send report mails
- fixes for race conditions in mwlib.filequeue (mw-watch)
- lots of other improvements...

## 2009-5-6 release 0.11.2

- fixes

## 2009-5-5 release 0.11.1

- merge of the nuwiki branch: better, faster resource fetching with twisted_api, new ZIP file format with nuwiki

## 2009-4-21 release 0.10.4

- fix chapter handling
- fix bad #tag params

## 2009-4-17 release 0.10.3

- fix issue with self-closing tags
- fix issue with "disappearing" table rows

## 2009-4-15 release 0.10.2

- fix for getURL() method in zipwiki

## 2009-4-9 release 0.10.1

- the parser has been completely rewritten (mwlib.refine)
- fix bug in recorddb.py: do not overwrite articles
- removed mwapidb.WikiDB.getTemplatesForArticle() which was broken and wasn't used.

## 2009-3-5 release 0.9.13

- normalize template names when checking against blacklist
- make NAMESPACE magic work for non-main namespaces
- make NS template work

## 2009-03-02 release 0.9.12

- fix template expansion bug with non self-closing ref tags containing equal signs

## 2009-2-25 release 0.9.11

- added --print-template-pattern
- fix bug in LOCALURLE with non-ascii characters (#473)
- fix 'upright' image modifier handling (#459)
- allow star inside URLs (#483)
- allow whitespace in image width modifiers (#475)

## 2009-2-19 release 0.9.10

- do not call check() in zipcreator: better some missing articles than an error message

## 2009-2-18 release 0.9.8

- localize image modifiers
- fix bug in serve with forced rendering
- fix bug in writerbase when no URL is returned
- return only unqiue image contributors, sorted
- #expr with whitespace only argument now returns the empty string instead of marking the result as an error.
- added mw-serve-ctl command line tool (#447)
- mwapidb: omit title in URLs with oldid
- mwapidb: added getTemplatesForArticle()
- zipcreator: check articles and sources to prevent broken ZIP files
- mwapidb: do query continuation to find out all authors (#420)
- serve: use a deterministic checksum for metabooks (#451)

## 2009-2-9 release 0.9.7

- fix bug in #expr parsing
- fix bug in localised namespace handling/#ifexist
- fix bug in redirect handling together with specific revision in mwapidb

## 2009-2-3 release 0.9.6

- mwapidb: return authors alphabetically sorted (#420)
- zipcreator: fixed classname from DummyScheduler to DummyJobScheduler; this bug broke the --no-threads option
- serve: if rendering is forced, don't re-use ZIP file (#432)
- options: remove default value "Print" from --print-template-prefix
- mapidb: expand local* functions, add them to source dictionary
- expander: fix memory leak in template parser (#439)
- expander: better noinclude, includeonly handling (#426)
- expander: #iferror now uses a regular expression (#435)
- expander: workaround dateutils bug (resulting in a TypeError: unsupported operand type(s) for +=: 'NoneType' and 'int')

## 2009-1-26 release 0.9.5

# License

Copyright (c) 2007-2009 PediaPress GmbH

All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

- Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
- Neither the name of PediaPress GmbH nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.