1 files changed, 101 insertions, 0 deletions
diff --git a/wp-admin/link-parse-opml.php b/wp-admin/link-parse-opml.php
new file mode 100644
index 0000000..c0f02bd
--- /dev/null
+++ b/wp-admin/link-parse-opml.php
@@ -0,0 +1,101 @@
+<?php
+/**
+ * Parse OPML XML files and store in globals.
+ *
+ * @package WordPress
+ * @subpackage Administration
+ */
+
+if ( ! defined( 'ABSPATH' ) ) {
+	die();
+}
+
+/**
+ * @global string $opml
+ */
+global $opml;
+
+/**
+ * Starts a new XML tag.
+ *
+ * Callback function for xml_set_element_handler().
+ *
+ * @since 0.71
+ * @access private
+ *
+ * @global array $names
+ * @global array $urls
+ * @global array $targets
+ * @global array $descriptions
+ * @global array $feeds
+ *
+ * @param resource $parser   XML Parser resource.
+ * @param string   $tag_name XML element name.
+ * @param array    $attrs    XML element attributes.
+ */
+function startElement( $parser, $tag_name, $attrs ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
+	global $names, $urls, $targets, $descriptions, $feeds;
+
+	if ( 'OUTLINE' === $tag_name ) {
+		$name = '';
+		if ( isset( $attrs['TEXT'] ) ) {
+			$name = $attrs['TEXT'];
+		}
+		if ( isset( $attrs['TITLE'] ) ) {
+			$name = $attrs['TITLE'];
+		}
+		$url = '';
+		if ( isset( $attrs['URL'] ) ) {
+			$url = $attrs['URL'];
+		}
+		if ( isset( $attrs['HTMLURL'] ) ) {
+			$url = $attrs['HTMLURL'];
+		}
+
+		// Save the data away.
+		$names[]        = $name;
+		$urls[]         = $url;
+		$targets[]      = isset( $attrs['TARGET'] ) ? $attrs['TARGET'] : '';
+		$feeds[]        = isset( $attrs['XMLURL'] ) ? $attrs['XMLURL'] : '';
+		$descriptions[] = isset( $attrs['DESCRIPTION'] ) ? $attrs['DESCRIPTION'] : '';
+	} // End if outline.
+}
+
+/**
+ * Ends a new XML tag.
+ *
+ * Callback function for xml_set_element_handler().
+ *
+ * @since 0.71
+ * @access private
+ *
+ * @param resource $parser   XML Parser resource.
+ * @param string   $tag_name XML tag name.
+ */
+function endElement( $parser, $tag_name ) { // phpcs:ignore WordPress.NamingConventions.ValidFunctionName.FunctionNameInvalid
+	// Nothing to do.
+}
+
+// Create an XML parser.
+if ( ! function_exists( 'xml_parser_create' ) ) {
+	trigger_error( __( "PHP's XML extension is not available. Please contact your hosting provider to enable PHP's XML extension." ) );
+	wp_die( __( "PHP's XML extension is not available. Please contact your hosting provider to enable PHP's XML extension." ) );
+}
+
+$xml_parser = xml_parser_create();
+
+// Set the functions to handle opening and closing tags.
+xml_set_element_handler( $xml_parser, 'startElement', 'endElement' );
+
+if ( ! xml_parse( $xml_parser, $opml, true ) ) {
+	printf(
+		/* translators: 1: Error message, 2: Line number. */
+		__( 'XML Error: %1$s at line %2$s' ),
+		xml_error_string( xml_get_error_code( $xml_parser ) ),
+		xml_get_current_line_number( $xml_parser )
+	);
+}
+
+// Free up memory used by the XML parser.
+xml_parser_free( $xml_parser );
+unset( $xml_parser );