New import system. Very rough draft.

git-svn-id: https://develop.svn.wordpress.org/trunk@2800 602fd350-edb4-49c9-b593-d223f7449a82

wp-admin/import.php

@@ -0,0 +1,62 @@
+<?php
+require_once ('admin.php');
+$title = __('Import');
+$parent_file = 'import.php';
+require_once ('admin-header.php');
+?>
+
+<div class="wrap">
+<h2><?php _e('Import'); ?></h2>
+<p><?php _e('If you have posts or comments in another system WordPress can import them into your current blog. To get started, choose a system to import from below:'); ?></p>
+
+<?php
+
+// Load all importers so that they can register.
+$import_loc = 'wp-admin/import';
+$import_root = ABSPATH.$import_loc;
+$imports_dir = @ dir($import_root);
+if ($imports_dir) {
+	while (($file = $imports_dir->read()) !== false) {
+		if (preg_match('|^\.+$|', $file))
+			continue;
+		if (preg_match('|\.php$|', $file))
+			require_once("$import_root/$file");
+	}
+}
+
+$importers = get_importers();
+
+if (empty ($importers)) {
+	_e("<p>No importers are available.</p>"); // TODO: make more helpful
+} else {
+?>
+<table width="100%" cellpadding="3" cellspacing="3">
+
+<?php
+	$style = '';
+	foreach ($importers as $id => $data) {
+		$style = ('class="alternate"' == $style || 'class="alternate active"' == $style) ? '' : 'alternate';
+		$action = "<a href='admin.php?import=$id' title='{$data[1]}'>{$data[0]}</a>";
+
+		if ($style != '')
+			$style = 'class="'.$style.'"';
+		echo "
+			<tr $style>
+				<td class=\"togl\">$action</td>
+				<td class=\"desc\">{$data[1]}</td>
+			</tr>";
+	}
+?>
+
+</table>
+<?php
+}
+?>
+
+</div>
+
+<?php
+
+include ('admin-footer.php');
+?>
+