Initial commit

LocalMotd/LocalMotd.php

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+<?php
+
+#--------------------------------------------------
+# Step 1: choose a magic word id
+#--------------------------------------------------
+
+# storing the chosen id in a constant is not required
+# but still good programming practice - it  makes 
+# searching for all occurrences of the magic word id a
+# bit easier - note that the name of the constant
+# and the value it is assigned don't have to have anthing
+# to do with each other.
+
+define('MAG_LOCALMOTD', 'localmotd');
+ 
+#---------------------------------------------------
+# Step 2: define some words to use in wiki markup
+#---------------------------------------------------
+
+$wgHooks['LanguageGetMagic'][] = 'wfLocalMotdWikiWords';
+function wfLocalMotdWikiWords(&$aWikiWords, $langID) {
+ 
+  #tell MediaWiki that all {{NiftyVar}}, {{NIFTYVAR}}, 
+  #{{CoolVar}}, {{COOLVAR}} and all case variants found 
+  #in wiki text should be mapped to magic id 'mycustomvar1'
+  # (0 means case-insensitive)
+  $aWikiWords[MAG_LOCALMOTD] = array(0, 'LocalMotd');
+ 
+  #must do this or you will silence every LanguageGetMagic
+  #hook after this!
+  return true;
+}
+ 
+#---------------------------------------------------
+# Step 3: assign a value to our variable
+#---------------------------------------------------
+
+function toHtml($data) {
+  return sprintf('<h3>%s</h3><p><em>Skrevet %s av %s</em></p><p>%s</p>', 
+    $data["title"], $data["date"], $data["user"], preg_replace('/@pvv\./', ' AT pvv.', $data["body"]));
+}
+
+function tolower($str) {
+	return str_replace(
+		array("\xc3\x86", "\xc3\x98", "\xc3\x85"),  // ÆØÅ
+		array("\xc3\xa6", "\xc3\xb8", "\xc3\xa5"),  // æøå
+		strtolower($str));
+}
+
+$wgHooks['ParserGetVariableValueSwitch'][] = 'wfLocalMotdAssignAValue';
+function wfLocalMotdAssignAValue(&$parser, &$cache, &$magicWordId, &$ret) {
+  if (MAG_LOCALMOTD == $magicWordId) {
+    // We found a value
+    //$ret='This is a really silly value';
+    //$ret = file_get_contents( '/local/etc/motd' );
+    #$lines = file('/local/etc/motd');
+    $lines = file('/usr/local/etc/motd');
+    $data = array();
+
+    $ret = "";
+    foreach ($lines as $line) {
+     	if (preg_match('/^(\d{4})(\d\d)(\d\d) (.*)/', $line, $matches)) {
+        if (count($data) > 0) {
+          $ret .= toHtml($data);
+          $data = array();
+        }
+        $data["date"] = $matches[1]."-".$matches[2]."-".$matches[3];
+        $data["title"] = substr($matches[4], 0, 1).tolower(substr($matches[4], 1));
+        $data["body"] = "";
+      } elseif (preg_match('/^([a-z]+)\s+(.*)/', $line, $matches)) {
+        $data["user"] = $matches[1];
+        $data["body"] .= rtrim($matches[2]);
+      } elseif (preg_match('/^\s*$/', $line)) {
+        $data["body"] .= "\n\n";
+      } else {
+        $data["body"] .= rtrim($line);
+      }
+    }
+    $ret .= toHtml($data);
+  }
+  // We must return true for two separate reasons:
+  // 1. To permit further callbacks to run for this hook.
+  //    They might override our value but that's life.
+  //    Returning false would prevent these future callbacks from running.
+  // 2. At the same time, "true" indicates we found a value.
+  //    Returning false would the set variable value to null.
+  //
+  // In other words, true means "we found a value AND other 
+  // callbacks will run," and false means "we didn't find a value
+  // AND abort future callbacks." It's a shame these two meanings
+  // are mixed in the same return value.  So as a rule, return
+  // true whether we found a value or not.
+  return true;
+}
+ 
+#---------------------------------------------------
+# Step 4: register the custom variables so that it
+#         shows up in Special:Version under the 
+#         listing of custom variables
+#---------------------------------------------------
+
+$wgExtensionCredits[MAG_LOCALMOTD][] = array(
+       'name' => 'Local MOTD',
+       'author' => 'Magnus Kristiansen', 
+       'url' => 'http://www.mediawiki.org/wiki/Extension:LocalMotd', 
+       'description' => 'Includes the motd from the filesystem'
+       );
+ 
+#---------------------------------------------------
+# Step 5: register wiki markup words associated with
+#         MAG_NIFTYVAR as a variable and not some 
+#         other type of magic word
+#---------------------------------------------------
+
+$wgHooks['MagicWordwgVariableIDs'][] = 'wfLocalMotdDeclareVarIds';
+function wfLocalMotdDeclareVarIds(&$aCustomVariableIds) {
+ 
+  #aCustomVariableIds is where MediaWiki wants to store its
+  #list of custom variable ids. We oblige by adding ours:
+  $aCustomVariableIds[] = MAG_LOCALMOTD;
+ 
+  #must do this or you will silence every MagicWordwgVariableIds
+  #registered after this!
+  return true;
+}