Initial work on the migration module.

git-svn-id: file:///tmp/wdn_thm_drupal/branches/drupal-7.x@82 20a16fea-79d4-4915-8869-1ea9d5ebf173

sites/all/modules/unl/unl.module

@@ -54,3 +54,19 @@ function unl_wysiwyg_plugin($editor)
         );
     }
 }
+
+function unl_menu()
+{
+    $access = array();
+    $items['admin/content/unl/migration'] = array(
+        'title' => 'UNL Migration Tool',
+        'description' => 'Migrate a static UNL template page into drupal',
+        'access arguments' => array('administer comments'),
+        'page callback' => 'unl_migration_page',
+        'type' => MENU_LOCAL_TASK,
+        'file' => 'unl_migration.php'
+    );
+    
+    return $items;
+}
+

sites/all/modules/unl/unl_migration.php

+<?php
+
+function unl_migration_page()
+{
+    return drupal_get_form('unl_migration');
+}
+
+
+function unl_migration($form, &$form_state)
+{
+    $form['root'] = array(
+        '#type' => 'fieldset',
+        '#title' => 'Migration Tool'
+    );
+    
+    $form['root']['site_url'] = array(
+        '#type' => 'textfield',
+        '#title' => t('Site URL'),
+        '#description' => t('Full URL to the existing site you wish to migrate'),
+        '#required' => TRUE
+    );
+    
+    $form['submit'] = array(
+        '#type' => 'submit',
+        '#value' => 'Migrate'
+    );
+    
+    return $form;
+}
+
+function unl_migration_submit($form, &$form_state)
+{
+    Unl_Migration_Tool::migrate($form_state['values']['site_url']);
+}
+
+
+class Unl_Migration_Tool
+{
+    static public function migrate($baseUrl)
+    {
+        $instance = new self($baseUrl);
+        return $instance->_migrate();
+    }
+    
+    private $_baseUrl;
+    private $_siteMap;
+    private $_processedPages;
+    
+    private function __construct($baseUrl)
+    {
+        header('Content-type: text/plain');
+        $baseUrl = trim($baseUrl);
+        if (substr($baseUrl, -1) != '/') {
+            $baseUrl .= '/';
+        }
+        $this->_siteMap = array();
+        $this->_processedPages = array();
+        
+        $this->_baseUrl = $baseUrl;
+        $this->_addSitePath('');
+    }
+    
+    private function _migrate()
+    {
+        do {
+            $pagesToProcess = $this->_getPagesToProcess();
+            foreach ($pagesToProcess as $pageToProcess) {
+                $this->_processPage($pageToProcess);
+            }
+            if ($i++ == 1) exit;
+        } while (count($pagesToProcess) > 0);
+        exit;
+    }
+    
+    private function _addSitePath($path)
+    {
+        $this->_siteMap[hash('SHA256', $path)] = $path;
+    }
+    
+    private function _getPagesToProcess()
+    {
+        $pagesToProcess = array();
+        foreach ($this->_siteMap as $path) {
+            if (in_array($path, $this->_processedPages)) {
+                continue;
+            }
+            $pagesToProcess[] = $path;
+        }
+        return $pagesToProcess;
+    }
+    
+    private function _addProcessedPage($path)
+    {
+        $this->_processedPages[hash('SHA256', $path)] = $path;
+    }
+    
+    private function _processPage($path)
+    {
+        $url = $this->_baseUrl . $path;
+        $startToken = '<!-- InstanceBeginEditable name="maincontentarea" -->';
+        $endToken = '<!-- InstanceEndEditable -->';
+    
+        $html = file_get_contents($url);
+        $contentStart = strpos($html, $startToken);
+        $contentEnd = strpos($html, $endToken, $contentStart);
+        $maincontentarea = substr($html,
+                                  $contentStart + strlen($startToken),
+                                  $contentEnd - $contentStart - strlen($startToken));
+        $maincontentarea = trim($maincontentarea);
+        
+        $dom = new DOMDocument();
+        $dom->loadHTML($html);
+        $maincontentNode = $dom->getElementById('maincontent');
+        $linkNodes = $maincontentNode->getElementsByTagName('a');
+        echo PHP_EOL . 'Path: ' . $path . PHP_EOL; ob_flush(); flush();
+        foreach ($linkNodes as $linkNode) {
+            $href = $linkNode->getAttribute('href');
+            echo $href  . ' => ';
+            $href = $this->_makeLinkAbsolute($href, dirname($path));
+            echo $href . PHP_EOL;
+            if (substr($href, 0, strlen($this->_baseUrl)) == $this->_baseUrl) {
+                $newPath = substr($href, strlen($this->_baseUrl));
+                $this->_addSitePath($newPath);
+            }
+        }
+        //$this->_createPage('Test', $maincontentarea);
+        $this->_addProcessedPage($path);
+    }
+    
+    private function _makeLinkAbsolute($href, $intermediatePath)
+    {
+        if (strlen($intermediatePath) > 0 && substr($intermediatePath, -1) != '/') {
+            $intermediatePath .= '/';
+        }
+        $parts = parse_url($href);
+        if ($parts['scheme']) {
+            return $href;
+        }
+        if (substr($parts['path'], 0, 1) == '/') {
+            $baseParts = parse_url($this->_baseUrl);
+            return $baseParts['scheme'] . '://' . $baseParts['host'] . $parts['path'];
+        }
+        return $this->_baseUrl . $intermediatePath . $href;
+    }
+    
+    private function _createPage($title, $content)
+    {
+        $node = new StdClass();
+        $node->type = 'page';
+        $node->title = $title;
+        $node->body = array(
+            'und' => array(
+                array(
+                    'value' => $content,
+                    'format' => filter_default_format()
+                )
+            )
+        );
+//        print_r($node); exit;
+        node_submit($node);
+//        print_r($node); exit;
+        node_save($node);
+    }
+}
+