Xmlwiki.php

<php> <?php

1. xmlWiki - MediaWiki XML Hack
2. Nad - 2005-05-18

1. CSS STYLES
2. the are accessed via http, so their article url can be referred to locally in the html
3. - maybe make the default request 'raw' and must specifically request 'view'

1. LATER:
2. allow XIncludes to build large docs from others
3. allow docBook and DSSSL content

1. ---------------------------------------------------------------------------------------------------------------------- #
2. SCRIPT CONTENTS

1. INIT
2. - do admin and exit if running directly
3. - get wiki/request env
4. - get article
5. - permissions
6. - build env (if action=raw, env is empty but a header is added)
7. INPUT
8. - validate xml and report error or,
9. - process form-input (backslashes etc if necessary)
10. OUTPUT
11. - trap MediaWiki output
12. - extract content and links
13. - if view/preview/raw, do transform:
14. - replace view/preview with transformed article
15. - render output
16. - if saving, foreach in publish-list,
17. - do transform but with specified env
18. - publish
19. TRANSFORM
20. - process dom-article (pass PT,XSLT list and DOM-article, returns DOM-result)
21. - if docType is an xwArticle, see above
22. TRANSFORMS
23. - document transforms
24. - image transforms
25. - layout transforms
26. - database table transforms
27. FUNCTIONS
28. - get article
29. - etxract hrefs from text
30. - message/log
31. ADMIN
32. - enable/disable patch

1. ---------------------------------------------------------------------------------------------------------------------- #
2. INIT

1. If xmlwiki.php requested directly, return admin page

if (eregi("xmlwiki\\.php", $_SERVER['SCRIPT_NAME'])) xwAdminPage(); else {

# Otherwise set up xmlWiki global environment ready for input and output processing $xwArticleTitle = $wgTitle->mTextform; $xwArticle = xwGetArticle($xwArticleTitle); $xwDocType = null; $xwRoot = null;

$xwEdit = isset($_REQUEST['action'])&&($_REQUEST['action'] == 'edit'); $xwView = isset($_REQUEST['action'])&&($_REQUEST['action'] == 'view'); $xwRaw = isset($_REQUEST['action'])&&($_REQUEST['action'] == 'raw'); $xwPreview = isset($_REQUEST['wpPreview']); $xwSave = isset($_REQUEST['wpSave']);

$xwUserName = $wgUser->mName; $xwUserArticle = xwGetArticle("User:$xwUserName"); $xwReadable = true; $xwWritable = true;

$xwMessages = array(); $xwArticleCache = array(); $xwEnv = array();

# If article is an object, if (is_object($xwArticle)) { # Get doc info $xwDocType = $xwArticle->doctype->name; $xwRoot = $xwArticle->document_element(); # Get perms $xwUserGroups[] = $xwUserName; // This allows users to be specified in permissions-lists in addition to groups $xwReadable = null; # True if this article is readable by this user $xwWritable = null; # True if this article is writeable by this user }

# Build default transform environment (later from prefs, site etc) if ($xwRaw) { # Raw article is requested, so env is empty } else { # Create default environment (the name of another article) # - this does default transforms depending on type (eg highlighting for *.php) $xwEnv[] = ; }

}

1. ---------------------------------------------------------------------------------------------------------------------- #
2. INPUT

1. No input processing for now

1. Parse and process input from forms

function xwProcessInput() {

global $xwArticle; global $xwArticleTitle; global $xwRoot; global $xwDocType;

global $xwSave;

global $xwReadable; global $xwWritable;

# If article is being updated, if ($xwSave) { global $_POST; if (!$xwReadable || !$xwWritable) die("I'm sorry Dave, I'm afraid I can't do that."); }

}

1. ---------------------------------------------------------------------------------------------------------------------- #
2. OUTPUT

1. Generate new output to send back to browser

function xwProcessOutput() {

global $wgOut;

global $xwArticle; global $xwArticleTitle; global $xwRoot; global $xwDocType;

global $xwView; global $xwPreview; global $xwSave;

global $xwUserName; global $xwUserArticle; global $xwReadable; global $xwWritable;

# First trap Wiki output and extract content and links (should use $ver like Admin Page) ob_start(); $wgOut->output(); $xwWikiOutput = ob_get_clean();

# Extract links (not used currently) $xwUserLinks = preg_match('/id="p-personal"(.+?)<\/div>/s', $xwWikiOutput, $xwMatch) ? xwExtractHrefs($xwMatch[1]) : array(); $xwArticleLinks = preg_match('/id="p-cactions"(.+?)<\/div>/s', $xwWikiOutput, $xwMatch) ? xwExtractHrefs($xwMatch[1]) : array();

# Security if (!$xwReadable) { # change output to access denied message if !readable } if (!$xwWritable) { # remove edit link }

# Transform article for raw request (ignores wiki-output completely) if ($xwRaw) $xwOutput = xwTransformArticle();

# Transform article for normal view if ($xwView) { if (preg_match('/^(.+).+(.+)$/m', $xwOutput, $xwMatch)) { $xwOutput = xwTransformArticle(); $xwOutput = $xwMatch[1].$xwOutput.$xwMatch[2]; } else xwMessage('xmlWiki couldn\'t match view-output!', 'red'); }

# Transform article for preview if ($xwPreview) { if (preg_match('/^(.+.+Remember.+saved!.+?<\\/p>).+(<script.+?<\\/script>.?<form id="editform".+.+)$/m', $xwOutput, $xwMatch)) { $xwOutput = xwTransformArticle(); $xwOutput = $xwMatch[1].$xwOutput.$xwMatch[2]; } else xwMessage('xmlWiki couldn\'t match preview-output!', 'red'); }

# Transform article for publishing if ($xwSave && is_object($xwArticle)) { # Get publish list $xwPublishList = $xwRoot->get_elements_by_tagname('publish'); if (count($xwPublishList)) $xwPublishList = $xwPublishList[0]->dump_mem(true); $xwPublishList = split(',', $xwPublishList); $xwOutput = xwTransformArticle(); # Publish each item foreach ($xwPublishList as $xwDestination) { if ($xwHandle = fopen($xwDestination, 'a')) { fwrite($xwHandle, $xwTransformedArticle); fclose($xwHandle); xwMessage("Article published to $cmDestination", 'green'); } else xwMessage("Failed to publish to $cmDestination", 'red'); } }

# Render final output and messages # - not good if content isn't plain-text anymore! foreach ($xwMessages as $msg) $xwOutput .= $msg; print $xwOutput; }

1. ---------------------------------------------------------------------------------------------------------------------- #
2. TRANSFORM

function xwTransformArticle() {

global $xwArticle; global $xwArticleTitle; global $xwDocType;

# If content is object, if (is_object($xwArticle)) { # we should check DTD's here for document, image, table, layout # eg. <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> # <!DOCTYPE greeting SYSTEM "hello.dtd"> if ($xwDocType == 'xmlwiki') { # Get the documents transforms # - the first transforms adjust the document while its still a DOM object # - but at some point it would normally transform to text, # - it may then have some further text-based transforms $xwTransforms = $root->get_elements_by_tagname('transform');

# - add php-transform-articles,CSS's & XSLT's to $xwEnv # - $xwEnv transforms first! }

# If object wasn't one of ours, or didn't get transformed to a string... if (!is_string($xwArticle)) { # validate, report errors

# apply stylesheet/XSLT if xml asks for one,

# Convert DOM back to XML $xwArticle = $xwArticle->dump_mem(true); } }

# Apply syntax highlighting if string (even if article was an object, it will be a string now) # - This isn't a transform because it also applies to non-object articles if (is_string($xwArticle)) { # First check for entire article highlighting if (ereg('\\.as$', $xwArticleTitle)) $xwLang = 'actionscript'; elseif (ereg('\\.py$', $xwArticleTitle)) $xwLang = 'python'; elseif (ereg('\\.java$', $xwArticleTitle)) $xwLang = 'java'; elseif (ereg('\\.(cpp)|(h)$', $xwArticleTitle)) $xwLang = 'cpp'; elseif (ereg('\\.js$', $xwArticleTitle)) $xwLang = 'javascript'; elseif (ereg('\\.css$', $xwArticleTitle)) $xwLang = 'css'; elseif (ereg('^#![/a-zA-Z0-9]+\\/perl', $xwArticle)) $xwLang = 'perl'; elseif (ereg('^#![/a-zA-Z0-9]+sh', $xwArticle)) $xwLang = 'bash'; elseif (ereg('^<?xml', $xwArticle)) $xwLang = 'xml'; elseif (ereg('^<?html', $xwArticle)) $xwLang = 'html4strict'; else { # Otherwise, parse article for internal highlights # <?,<% lang (default % is asp, default ? is php) # <script language= (default is javascript)

$xwLang = false; }

# Highlight entire article if xwLang has been set if ($xwLang) $xwGeshi = new GeSHi($xwArticle, $xwLang, "extensions/geshi/geshi"); $geshi->set_keywords_style(1, 'font-weight: 100;', true); $geshi->set_comments_style $geshi->set_escape_char_style $geshi->set_brackets_style $geshi->set_strings_style $geshi->set_numbers_style $geshi->set_methods_style $geshi->set_symbols_style $geshi->set_regexps_style $geshi->set_script_style $xwArticle = $xwGeshi->parse_code(); } } }

1. ---------------------------------------------------------------------------------------------------------------------- #
2. TRANSFORMS
3. - we should use DTD's for each kind: document, image, layout, table

function xwTransform_document_xxx() { # documents are built from parts, # the parts are a tree in its body # includes 'edit' link for each (like section, and also like table) }

1. A document object is finalised by transforming it to its body's text

function xwTransform_document_render() { global $xwArticle; $root = $xwArticle->document_element(); $body = $root->get_elements_by_tagname('body'); if (count($body)) $xwArticle = $body[0]->dump_mem(true); }

function xwTransform_layout_xxx() { # for layout container style article }

function xwTransform_image_xxx() { # object contains properties for loading and transforming an image # image needs no body

# Get the global image on which imageTransforms work global $xwArticleImage; }

1. Converts the in-memory-working image into article content

function xwTransform_image_render() { global $xwArticle; global $xwArticleTitle; global $xwArticleImage; global $xwRaw; if ($xwRaw) { # replace article object with image ob_start() imagePng($xwArticleImage); $xwArticle = ob_get_clean(); # set header to image header("Content-type: image/png"); } else { # the raw image is not being requested, render image in-page with info instead $xwArticle = "<img src=\"$xwArticleTitle?action=raw\" alt=\"$xwArticleTitle\"/>"; } }

1. A table object is an interface to a database table
2. - this can't be implimented fully until the 'edit' hook is done

function xwTransform_table_xxx() { # - view lists the table/result with links to edit each (like a normal composition-doc) # - also form for create/edit/edlete }

1. ---------------------------------------------------------------------------------------------------------------------- #
2. FUNCTIONS

1. Retreive wiki-article
2. - A DOM object is returned if possible,
3. - or otherwise string content is returned (which can be parsed for highlighting)

function xwGetArticle($articleTitle) { # Return with results if already cached global $xwArticleCache; if (isset($xwArticleCache[$articleTitle])) return $xwArticleCache[$articleTitle]; # Get wiki article content (XML) $article = new Article(Title::newFromText($articleTitle)); $article = $article->getContent(false); # Convert to DOM object if possible if ($articleDOM = @domxml_open_mem($article)) $article = $articleDOM; # Return content return $xwArticleCache[$articleTitle] = $article; }

1. Return a list of the hrefs found in the passed content

function xwExtractHrefs($content) { preg_match_all('/(<a.+?<\/a>)/', $content, $match); return $match[1]; }

1. Add message to queue

function xwMessage($msg, $col) { global $xwMessages;

$xwMessages[] = "

$msg

\n";

}

1. ---------------------------------------------------------------------------------------------------------------------- #
2. ADMIN

function xwAdminPage() {

?>

xmlWiki Admin Page

output\\(\\);/m"; # Apply patches if (preg_match($requireMatch[$ver], $file = join('', file('./index.php'))) && preg_match($inputMatch[$ver], $file) && preg_match($outputMatch[$ver], $file)) { $file = preg_replace($requireMatch[$ver], "wfProfileOut( 'main-misc-setup' );\nrequire_once( './xmlwiki.php' );", $file); $file = preg_replace($inputMatch[$ver], "xwProcessInput();\nwfProfileIn( 'main-action' );", $file); $file = preg_replace($outputMatch[$ver], "xwProcessOutput();", $file); if ($handle = fopen('./index.php', 'w')) { fwrite($handle, $file); fclose($handle); } else print xwMessage('Could not open index.php for writing!', '#d00000'); } else print xwMessage('Could not match content of index.php script!', '#d00000'); } elseif (array_key_exists('disable', $_GET)) { # Replace from backup if (!copy('./index.bak', './index.php')) print xwMessage('Could not copy index.bak over index.php', '#d00000'); } # Print current state if (filesize('./index.php') == filesize('./index.bak')) print xwMessage('xmlWiki is currently disabled. [ enable ]', '#003366'); else print xwMessage('xmlWiki is currently enabled. [ disable ]', '#003366'); ?>

<? }

?> </php>