Index: taxonomy_xml.drush.inc
===================================================================
--- taxonomy_xml.drush.inc	(Revision 0)
+++ taxonomy_xml.drush.inc	(Revision 0)
@@ -0,0 +1,84 @@
+<?php
+
+/**
+ * @file
+ * Drush commands for the taxonomy_xml module.
+ */
+
+/**
+ * Implements hook_drush_command().
+ */
+function taxonomy_xml_drush_command() {
+  $items = array();
+
+  $items['taxonomy_xml-import'] = array(
+    'callback' => 'drush_taxonomy_xml_import',
+    'description' => 'Import taxonomies from different file formats.',
+    'examples' => array(
+      'drush taxonomy_xml-import tags.xml --vocabulary=tags' =>
+        'Import tags.xml into the vocabulary with the machine name "tags".',
+    ),
+    'arguments' => array(
+      'file' => 'Path of the file to import.',
+      'format' => 'Format of the given file: "xml" (default), "tcs", '
+                . '"csvancestry", "mesh", "csv".',
+    ),
+    'options' => array(
+      'vocabulary' => 'vid or machine_name of the vocabulary to import into. '
+                    . 'Pass 0 to determine the target vocabulary by the file. '
+                    . 'By default, a new vocabulary with the name of the file '
+                    . 'will be created.',
+    ),
+  );
+
+  return $items;
+}
+
+/**
+ * Implements hook_drush_help().
+ */
+function taxonomy_xml_drush_help($section) {
+  switch ($section) {
+    case 'drush:taxonomy_xml-import':
+      return dt('Import taxonomies from different file formats.');
+  }
+}
+
+/**
+ * Process the import.
+ * 
+ * @param $file
+ *   Path of the file to import.
+ * @param $format
+ *   Format of the file to import.
+ */
+function drush_taxonomy_xml_import($file, $format = 'xml') {
+  if (!$file || !file_exists($file)) {
+    drush_log("File $file cannot be found.", 'error');
+    return;
+  }
+
+  $vocabulary = drush_get_option('vocabulary', TAXONOMY_XML_CREATE_NEW);
+
+  // If a machine name instead of a vid is given.
+  if (!is_numeric($vocabulary)) {
+    foreach (taxonomy_get_vocabularies() as $vid => $vocab) {
+      if ($vocab->machine_name == $vocabulary) {
+        $vocabulary = $vocab->vid;
+      }
+    }
+
+    // If it still isn't numeric, the vocabulary couldn't be found.
+    if (!is_numeric($vocabulary)) {
+      drush_log("The given vocabulary $vocabulary doesn't exist.", 'error');
+      return;
+    }
+  }
+
+  $params = array(
+    'format' => $format,
+    'vid' => $vocabulary,
+  );
+
+  taxonomy_xml_invoke_import(file_get_contents($file), $params, $file);
+}