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| [[Techniques]]: [[MediaWiki]]: [[MediaWikiDoc:Code|Code]]
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| ==How A Page is Built==
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| ''(From [[User:Woozle|Woozle]] 21:59, 15 Jun 2005 (EDT).)''
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| *Everything obviously starts with [[MediaWikiDoc:index.php|index.php]]
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| *For the purpose of displaying a page (not saving changes or doing anything else), this calls $wgArticle->view(), in [[MediaWikiDoc:Article.php|Article.php]] (line 699)
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| *$wgArticle->view() appears to be able to provide a few other formats besides the regular view (including difference engine and displaying redirections as subtitles), but I'm ignoring that for now
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| *$wgOut seems to be the object which accumulates text to be output. It is created in [[MediaWikiDoc:Setup.php|Setup.php]]:
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| **$wgOut = new OutputPage();
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| *OutputPage() is defined in [[MediaWikiDoc:OutputPage.php|OutputPage.php]]
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| *After being created, $wgOut accumulates output via various class methods:
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| **$wgOut->[[MediaWikiDoc:OutputPage.php#function addWikiText|addWikiText]](...)
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| **$wgOut->[[MediaWikiDoc:OutputPage.php#function addHTML|addHTML]](...)
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| **$wgOut->[[MediaWikiDoc:OutputPage.php#function addPrimaryWikiText|addPrimaryWikiText]]() # Display content and save to parser cache
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| **$wgOut->[[MediaWikiDoc:OutputPage.php#function addWikiText|addWikiText]]() # Display content, don't attempt to save to parser cache
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| **$wgOut->[[MediaWikiDoc:OutputPage.php#function setPageTitle|setPageTitle]]()
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| **$wgOut->[[MediaWikiDoc:OutputPage.php#function transformBuffer|transformBuffer]](); # Put link titles into the link cache
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| **$wgOut->[[MediaWikiDoc:OutputPage.php#function addMetaTags|addMetaTags]](); # Add link titles as META keywords
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| *...and then it does these two lines:
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| **$this->viewUpdates(); ''(found at line 1926 -- doesn't do much)''
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| **wfProfileOut( $fname );
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| *It's not clear whether the navbar has already been pulled in by the time we hit viewUpdates -- possibly transformBuffer does it? The comment makes it sound like that, but the name "transformBuffer" in that case is not very descriptive. The code in there should probably be examined.
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