Cicalese has submitted this change and it was merged. ( 
https://gerrit.wikimedia.org/r/405328 )

Change subject: Initial commit.
......................................................................


Initial commit.

Change-Id: I9dfac34962ce1dadcb216e0b2fafc7098983e1f4
---
A .gitignore
A .phpcs.xml
A CODE_OF_CONDUCT.md
A COPYING
A composer.json
A extension.json
A i18n/VersionCompare.i18n.alias.php
A i18n/en.json
A i18n/qqq.json
A includes/SpecialVersionCompare.php
A resources/VersionCompare.css
11 files changed, 760 insertions(+), 0 deletions(-)

Approvals:
  Cicalese: Verified; Looks good to me, approved



diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..db8a779
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+/node_modules
+/vendor
+/composer.lock
diff --git a/.phpcs.xml b/.phpcs.xml
new file mode 100644
index 0000000..b0464c3
--- /dev/null
+++ b/.phpcs.xml
@@ -0,0 +1,8 @@
+<?xml version="1.0"?>
+<ruleset>
+       <rule ref="./vendor/mediawiki/mediawiki-codesniffer/MediaWiki">
+       </rule>
+       <file>.</file>
+       <arg name="extensions" value="php,php5,inc" />
+       <arg name="encoding" value="UTF-8" />
+</ruleset>
diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000..d8e5d08
--- /dev/null
+++ b/CODE_OF_CONDUCT.md
@@ -0,0 +1 @@
+The development of this software is covered by a [Code of 
Conduct](https://www.mediawiki.org/wiki/Code_of_Conduct).
diff --git a/COPYING b/COPYING
new file mode 100644
index 0000000..d159169
--- /dev/null
+++ b/COPYING
@@ -0,0 +1,339 @@
+                    GNU GENERAL PUBLIC LICENSE
+                       Version 2, June 1991
+
+ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,
+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ Everyone is permitted to copy and distribute verbatim copies
+ of this license document, but changing it is not allowed.
+
+                            Preamble
+
+  The licenses for most software are designed to take away your
+freedom to share and change it.  By contrast, the GNU General Public
+License is intended to guarantee your freedom to share and change free
+software--to make sure the software is free for all its users.  This
+General Public License applies to most of the Free Software
+Foundation's software and to any other program whose authors commit to
+using it.  (Some other Free Software Foundation software is covered by
+the GNU Lesser General Public License instead.)  You can apply it to
+your programs, too.
+
+  When we speak of free software, we are referring to freedom, not
+price.  Our General Public Licenses are designed to make sure that you
+have the freedom to distribute copies of free software (and charge for
+this service if you wish), that you receive source code or can get it
+if you want it, that you can change the software or use pieces of it
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+  To protect your rights, we need to make restrictions that forbid
+anyone to deny you these rights or to ask you to surrender the rights.
+These restrictions translate to certain responsibilities for you if you
+distribute copies of the software, or if you modify it.
+
+  For example, if you distribute copies of such a program, whether
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+rights.
+
+  We protect your rights with two steps: (1) copyright the software, and
+(2) offer you this license which gives you legal permission to copy,
+distribute and/or modify the software.
+
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+that everyone understands that there is no warranty for this free
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+   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION
+
+  0. This License applies to any program or other work which contains
+a notice placed by the copyright holder saying it may be distributed
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+                     END OF TERMS AND CONDITIONS
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+            How to Apply These Terms to Your New Programs
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+    <one line to give the program's name and a brief idea of what it does.>
+    Copyright (C) <year>  <name of author>
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+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
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+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
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+    with this program; if not, write to the Free Software Foundation, Inc.,
+    51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+
+Also add information on how to contact you by electronic and paper mail.
+
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+    Gnomovision version 69, Copyright (C) year name of author
+    Gnomovision comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+    This is free software, and you are welcome to redistribute it
+    under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License.  Of course, the commands you use may
+be called something other than `show w' and `show c'; they could even be
+mouse-clicks or menu items--whatever suits your program.
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+You should also get your employer (if you work as a programmer) or your
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+
+  Yoyodyne, Inc., hereby disclaims all copyright interest in the program
+  `Gnomovision' (which makes passes at compilers) written by James Hacker.
+
+  <signature of Ty Coon>, 1 April 1989
+  Ty Coon, President of Vice
+
+This General Public License does not permit incorporating your program into
+proprietary programs.  If your program is a subroutine library, you may
+consider it more useful to permit linking proprietary applications with the
+library.  If this is what you want to do, use the GNU Lesser General
+Public License instead of this License.
diff --git a/composer.json b/composer.json
new file mode 100644
index 0000000..182cb75
--- /dev/null
+++ b/composer.json
@@ -0,0 +1,19 @@
+{
+       "require-dev": {
+               "jakub-onderka/php-parallel-lint": "0.9.2",
+               "jakub-onderka/php-console-highlighter": "0.3.2",
+               "mediawiki/mediawiki-codesniffer": "^15.0",
+               "mediawiki/minus-x": "0.2.1"
+       },
+       "scripts": {
+               "test": [
+                       "parallel-lint . --exclude vendor --exclude 
node_modules",
+                       "phpcs -p -s",
+                       "minus-x check ."
+               ],
+               "fix": [
+                       "phpcbf",
+                       "minus-x fix ."
+               ]
+       }
+}
diff --git a/extension.json b/extension.json
new file mode 100644
index 0000000..73d7607
--- /dev/null
+++ b/extension.json
@@ -0,0 +1,37 @@
+{
+       "name": "VersionCompare",
+       "version": "1.0",
+       "author": [
+               "[http://www.mediawiki.org/wiki/User:Cindy.cicalese Cindy 
Cicalese]"
+       ],
+       "url": "https://www.mediawiki.org/wiki/Extension:VersionCompare";,
+       "descriptionmsg": "version-compare-desc",
+       "license-name": "GPL-2.0+",
+       "type": "other",
+       "AutoloadClasses": {
+               "SpecialVersionCompare": "includes/SpecialVersionCompare.php"
+       },
+       "SpecialPages": {
+               "VersionCompare": "SpecialVersionCompare"
+       },
+       "MessagesDirs": {
+               "VersionCompare": [
+                       "i18n"
+               ]
+       },
+       "ExtensionMessagesFiles": {
+               "VersionCompareAlias": "i18n/VersionCompare.i18n.alias.php"
+       },
+       "ResourceModules": {
+               "ext.VersionCompare": {
+                       "styles": [
+                               "VersionCompare.css"
+                       ]
+               }
+       },
+       "ResourceFileModulePaths": {
+               "localBasePath": "resources",
+               "remoteExtPath": "VersionCompare/resources"
+       },
+       "manifest_version": 2
+}
diff --git a/i18n/VersionCompare.i18n.alias.php 
b/i18n/VersionCompare.i18n.alias.php
new file mode 100644
index 0000000..6da064c
--- /dev/null
+++ b/i18n/VersionCompare.i18n.alias.php
@@ -0,0 +1,7 @@
+<?php
+
+$specialPageAliases = [];
+
+$specialPageAliases['en'] = [
+       'VersionCompare' => [ 'VersionCompare' ]
+];
diff --git a/i18n/en.json b/i18n/en.json
new file mode 100644
index 0000000..a6051cb
--- /dev/null
+++ b/i18n/en.json
@@ -0,0 +1,16 @@
+{
+       "@metadata": {
+               "authors": [
+                       "Cindy Cicalese"
+               ]
+       },
+       "versioncompare": "Version Compare",
+       "version-compare-desc": "Show comparison of core component and 
extension versions between two wikis",
+       "version-compare-database-label": "Database",
+       "version-compare-url-error": "Error getting data from $1.",
+       "version-compare-url-field-label-1": "API URL #1:",
+       "version-compare-url-field-help-1": "API URL (ending in api.php) of the 
first wiki to compare. Will use the current wiki if left blank.",
+       "version-compare-url-field-label-2": "API URL #2:",
+       "version-compare-url-field-help-2": "API URL (ending in api.php) of the 
second wiki to compare. Will use the current wiki if left blank.",
+       "version-compare-diff-field-label": "Show only differences"
+}
diff --git a/i18n/qqq.json b/i18n/qqq.json
new file mode 100644
index 0000000..10cdf31
--- /dev/null
+++ b/i18n/qqq.json
@@ -0,0 +1,16 @@
+{
+       "@metadata": {
+               "authors": [
+                       "Cindy Cicalese"
+               ]
+       },
+       "versioncompare": "The name of the extension's entry in 
Special:SpecialPages",
+       "version-compare-desc": 
"{{desc|name=VersionCompare|url=https://www.mediawiki.org/wiki/Extension:VersionCompare}}";,
+       "version-compare-database-label": "Field label",
+       "version-compare-url-error": "Error message",
+       "version-compare-url-field-label-1": "Field label",
+       "version-compare-url-field-help-1": "Field help",
+       "version-compare-url-field-label-2": "Field label",
+       "version-compare-url-field-help-2": "Field help",
+       "version-compare-diff-field-label": "Field label"
+}
diff --git a/includes/SpecialVersionCompare.php 
b/includes/SpecialVersionCompare.php
new file mode 100644
index 0000000..df61395
--- /dev/null
+++ b/includes/SpecialVersionCompare.php
@@ -0,0 +1,280 @@
+<?php
+
+class SpecialVersionCompare extends SpecialPage {
+
+       public function __construct() {
+               parent::__construct( 'VersionCompare' );
+       }
+
+       /**
+        * @inheritDoc
+        */
+       public function execute( $parser ) {
+               $request = $this->getRequest();
+               $output = $this->getOutput();
+               $this->setHeaders();
+               $output->addModules( 'ext.VersionCompare' );
+
+               $url1 = trim( $request->getText( 'url1' ) );
+               $url2 = trim( $request->getText( 'url2' ) );
+               $diff = $request->getBool( 'diff' );
+
+               $formDescriptor = [
+                       'urlfield1' => [
+                               'label-message' => 
'version-compare-url-field-label-1',
+                               'help-message' => 
'version-compare-url-field-help-1',
+                               'class' => 'HTMLTextField',
+                               'default' => $url1,
+                               'name' => 'url1'
+                       ],
+                       'urlfield2' => [
+                               'label-message' => 
'version-compare-url-field-label-2',
+                               'help-message' => 
'version-compare-url-field-help-2',
+                               'class' => 'HTMLTextField',
+                               'default' => $url2,
+                               'name' => 'url2'
+                       ],
+                       'difffield' => [
+                               'label-message' => 
'version-compare-diff-field-label',
+                               'class' => 'HTMLCheckField',
+                               'default' => false,
+                               'name' => 'diff'
+                       ]
+               ];
+
+               $htmlForm =
+                       HTMLForm::factory( 'ooui', $formDescriptor, 
$this->getContext() );
+               $htmlForm->setMethod( 'get' );
+               $htmlForm->prepareForm()->displayForm( false );
+
+               if ( $url1 === '' && $url1 !== $url2 ) {
+                       $url1 = $GLOBALS['wgServer'] .  
$GLOBALS['wgScriptPath'] . '/api.php';
+               } elseif ( $url2 === '' && $url1 !== $url2 ) {
+                       $url2 = $GLOBALS['wgServer'] .  
$GLOBALS['wgScriptPath'] . '/api.php';
+               }
+
+               if ( $url1 !== '' && $url2 !== '' ) {
+                       $info1 = $this->getVersionInfo( $url1 );
+                       if ( is_null( $info1 ) ) {
+                               $html = Html::openElement( 'p', [ 'class' => 
'error' ] ) .
+                                       wfMessage( 'version-compare-url-error', 
$url1 )->text() .
+                                       Html::closeElement( 'p' );
+                               $output->addHTML( $html );
+                               return;
+                       }
+
+                       $info2 = $this->getVersionInfo( $url2 );
+                       if ( is_null( $info2 ) ) {
+                               $html = Html::openElement( 'p', [ 'class' => 
'error' ] ) .
+                                       wfMessage( 'version-compare-url-error', 
$url2 )->text() .
+                                       Html::closeElement( 'p' );
+                               $output->addHTML( $html );
+                               return;
+                       }
+
+                       $html = $this->compareWikis( $info1, $info2, $diff );
+                       $output->addHTML( $html );
+               }
+       }
+
+       private function getVersionInfo( $url ) {
+               $json = [];
+               $query =
+                       
"?action=query&meta=siteinfo&siprop=general%7Cextensions%7Cskins&format=json";
+       $ret = @file_get_contents( $url . $query );
+               if ( $ret === false ) {
+                       return null;
+               }
+               $json = json_decode( $ret );
+               if ( is_null( $json ) ) {
+                       return null;
+               }
+               return $this->getVersionArray( $json );
+       }
+
+       private static $wikiProperties = [
+               'logo',
+               'wikiid',
+               'servername',
+               'generator',
+               'git-hash',
+               'phpversion',
+               'phpsapi',
+               'dbtype',
+               'dbversion'
+       ];
+
+       private static $extensionProperties = [
+               'version',
+               'vcs-system',
+               'vcs-version',
+               'vcs-date'
+       ];
+
+       private function getVersionArray( $info ) {
+               if ( !property_exists( $info, 'query' ) ||
+                       !property_exists( $info->query, 'general' ) ||
+                       !property_exists( $info->query, 'extensions' ) ) {
+                       return null;
+               }
+               $ret = [];
+               foreach ( self::$wikiProperties as $property ) {
+                       if ( property_exists( $info->query->general, $property 
) ) {
+                               $ret[$property] = 
$info->query->general->$property;
+                       } else {
+                               $ret[$property] = '';
+                       }
+               }
+               $extensions = [];
+               foreach ( $info->query->extensions as $extension ) {
+                       $e = [];
+                       foreach ( self::$extensionProperties as $property ) {
+                               if ( property_exists( $extension, $property ) ) 
{
+                                       $e[$property] = $extension->$property;
+                               } else {
+                                       $e[$property] = '';
+                               }
+                       }
+                       $extensions[$extension->name] = $e;
+               }
+               $ret['extensions'] = $extensions;
+               return $ret;
+       }
+
+       private function compareWikis( $info1, $info2, $diff ) {
+               $html = Html::openElement( 'table', [ 'class' => 
'version-compare-table' ] );
+
+               $html .= Html::openElement( 'tr' );
+               $html .= Html::openElement( 'th' );
+               $html .= Html::closeElement( 'th' );
+               $html .= Html::openElement( 'th',
+                       [ 'class' => 'version-compare-wiki-1', 'width' => '35%' 
] );
+               $html .= Html::element( 'img', [ 'src' => $info1['logo'] ] );
+               $html .= Html::openElement( 'p' );
+               $html .= $info1['wikiid'];
+               $html .= Html::closeElement( 'p' );
+               $html .= Html::openElement( 'p' );
+               $html .= $info1['servername'];
+               $html .= Html::closeElement( 'p' );
+               $html .= Html::closeElement( 'th' );
+               $html .= Html::openElement( 'th',
+                       [ 'class' => 'version-compare-wiki-2', 'width' => '35%' 
] );
+               $html .= Html::element( 'img', [ 'src' => $info2['logo'] ] );
+               $html .= Html::openElement( 'p' );
+               $html .= $info2['wikiid'];
+               $html .= Html::closeElement( 'p' );
+               $html .= Html::openElement( 'p' );
+               $html .= $info2['servername'];
+               $html .= Html::closeElement( 'p' );
+               $html .= Html::closeElement( 'th' );
+               $html .= Html::closeElement( 'tr' );
+
+               $html .=
+                       $this->formatRow( 'MediaWiki', $info1, $info2, [ 
'generator', 'git-hash' ],
+                       $diff );
+               $html .= $this->formatRow( 'PHP', $info1, $info2, [ 
'phpversion', 'phpsapi' ],
+                       $diff );
+               $html .=
+                       $this->formatRow( wfMessage( 
'version-compare-database-label' )->text(),
+                       $info1, $info2, [ 'dbtype', 'dbversion' ], $diff );
+
+               $extensions = [];
+               foreach ( $info1['extensions'] as $key => $value ) {
+                       $extensions[] = $key;
+               }
+               foreach ( $info2['extensions'] as $key => $value ) {
+                       $extensions[] = $key;
+               }
+               $extensions = array_unique( $extensions );
+               asort( $extensions );
+               foreach ( $extensions as $value ) {
+                       if ( isset( $info1['extensions'][$value] ) ) {
+                               $extension1 = $info1['extensions'][$value];
+                       } else {
+                               $extension1 = null;
+                       }
+                       if ( isset( $info2['extensions'][$value] ) ) {
+                               $extension2 = $info2['extensions'][$value];
+                       } else {
+                               $extension2 = null;
+                       }
+                       $html .= $this->formatRow( $value, $extension1, 
$extension2,
+                               self::$extensionProperties, $diff );
+               }
+
+               $html .= Html::closeElement( 'table' );
+
+               return $html;
+       }
+
+       private function formatRow( $label, $info1, $info2, $properties, $diff 
) {
+               $match = $this->compareFields( $info1, $info2, $properties );
+               if ( $match && $diff ) {
+                       return;
+               }
+               $html = Html::openElement( 'tr' );
+               if ( $match ) {
+                       $html .= Html::openElement( 'th', [ 'class' => 
'version-compare-same' ] );
+               } elseif ( is_null( $info1 ) ) {
+                       $html .= Html::openElement( 'th', [ 'class' => 
'version-compare-wiki-2' ] );
+               } elseif ( is_null( $info2 ) ) {
+                       $html .= Html::openElement( 'th', [ 'class' => 
'version-compare-wiki-1' ] );
+               } else {
+                       $html .=
+                               Html::openElement( 'th', [ 'class' => 
'version-compare-different' ] );
+               }
+               $html .= Html::openElement( 'p' );
+               $html .= $label;
+               $html .= Html::closeElement( 'p' );
+               $html .= Html::closeElement( 'th' );
+               if ( $match ) {
+                       $html .= Html::openElement( 'td', [ 'colspan' => 2 ] );
+               } else {
+                       $html .= Html::openElement( 'td' );
+               }
+               if ( is_null( $info1 ) ) {
+                       $html .= Html::openElement( 'p' );
+                       $html .= '&empty;';
+                       $html .= Html::closeElement( 'p' );
+               } else {
+                       foreach ( $properties as $property ) {
+                               if ( isset( $info1[$property] ) ) {
+                                       $html .= Html::openElement( 'p' );
+                                       $html .= $info1[$property];
+                                       $html .= Html::closeElement( 'p' );
+                               }
+                       }
+               }
+               if ( !$match ) {
+                       $html .= Html::closeElement( 'td' );
+                       $html .= Html::openElement( 'td' );
+                       if ( is_null( $info2 ) ) {
+                               $html .= Html::openElement( 'p' );
+                               $html .= '&empty;';
+                               $html .= Html::closeElement( 'p' );
+                       } else {
+                               foreach ( $properties as $property ) {
+                                       if ( isset( $info2[$property] ) ) {
+                                               $html .= Html::openElement( 'p' 
);
+                                               $html .= $info2[$property];
+                                               $html .= Html::closeElement( 
'p' );
+                                       }
+                               }
+                       }
+               }
+               $html .= Html::closeElement( 'td' );
+               $html .= Html::closeElement( 'tr' );
+
+               return $html;
+       }
+
+       private function compareFields( $info1, $info2, $properties ) {
+               foreach ( $properties as $property ) {
+                       if ( !isset( $info1[$property] ) || !isset( 
$info2[$property] ) ||
+                               $info1[$property] !== $info2[$property] ) {
+                               return false;
+                       }
+               }
+               return true;
+       }
+}
diff --git a/resources/VersionCompare.css b/resources/VersionCompare.css
new file mode 100644
index 0000000..4fa0062
--- /dev/null
+++ b/resources/VersionCompare.css
@@ -0,0 +1,34 @@
+.version-compare-table {
+       margin-top: 20px;
+}
+
+.version-compare-table, .version-compare-table th, .version-compare-table td {
+       border: 1px solid #ccc;
+       border-collapse: collapse;
+       text-align: center;
+       padding: 10px;
+}
+
+.version-compare-table img {
+       width: 55px;
+}
+
+.version-compare-table p {
+       margin: 0px;
+       line-height: 1.2em;
+}
+
+.version-compare-same {
+}
+
+.version-compare-wiki-1 {
+       color: darkorchid;
+}
+
+.version-compare-wiki-2 {
+       color: cornflowerblue;
+}
+
+.version-compare-different {
+       color: darkgoldenrod;
+}

-- 
To view, visit https://gerrit.wikimedia.org/r/405328
To unsubscribe, visit https://gerrit.wikimedia.org/r/settings

Gerrit-MessageType: merged
Gerrit-Change-Id: I9dfac34962ce1dadcb216e0b2fafc7098983e1f4
Gerrit-PatchSet: 1
Gerrit-Project: mediawiki/extensions/VersionCompare
Gerrit-Branch: master
Gerrit-Owner: Cicalese <ccical...@wikimedia.org>
Gerrit-Reviewer: Cicalese <ccical...@wikimedia.org>
Gerrit-Reviewer: Siebrand <siebr...@kitano.nl>

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