Add local lib JSON Schema editor

feat(jsoneditor, PatternkitDrupalTwigLib)

Adds a local JSON Schema editor from jdorn/json-editor and updates the
necessary classes to support the functionality.

Author: cybtachyon

composer.json

@@ -8,5 +8,11 @@
     ],
     "require": {},
     "config": {},
-    "repositories": []
+    "repositories": [],
+    "scripts": {
+        "post-autoload-dump": [
+            "wget -Oq -P js/ --no-check-certificate https://raw.github.com/jdorn/json-editor/master/dist/jsoneditor.min.js",
+            "wget -Oq -P js/ --no-check-certificate https://raw.github.com/jdorn/json-editor/master/dist/jsoneditor.js"
+        ]
+    }
 }

include/utility.inc

@@ -0,0 +1,71 @@
+<?php
+
+/**
+ * @file
+ * Utility functions for Patternkit.
+ */
+
+/**
+ * Utility function to get all Patternkit module metadata.
+ *
+ * @param string|null $subtype
+ *   If specified, return only the first metadata found for this subtype.
+ * @param bool $reset
+ *   Optionally force the meta data to be reloaded.
+ *
+ * @return array|\PatternkitPattern
+ *   Array of metadata objects found or object if specific module requested.
+ *
+ * @todo Add support for multiple library implementation of a pattern.
+ */
+function _patternkit_get_metadata($subtype = NULL, $reset = FALSE) {
+  $metadata = array();
+  foreach (patternkit_pattern_libraries() as $lib) {
+    if ($subtype === NULL) {
+      $metadata += $lib->getCachedMetadata(NULL, $reset);
+      continue;
+    }
+    $module = $lib->getCachedMetadata($subtype, $reset);
+    if ($module !== NULL) {
+      return $module;
+    }
+  }
+  return $metadata;
+}
+
+/**
+ * Parses schema properties for $ref and updates their location.
+ *
+ * @param object $properties
+ *   The properties to parse.
+ * @param array &$metadata
+ *   The library metadata to lookup referenced patterns in.
+ *
+ * @return object
+ *   The updated schema properties object.
+ */
+function _patternkit_schema_ref($properties, array &$metadata) {
+  foreach ($properties as $property => $value) {
+    if (!is_scalar($value)) {
+      $new_value = _patternkit_schema_ref($value, $metadata);
+      if (is_object($properties)) {
+        $properties->{$property} = $new_value;
+      }
+      if (is_array($properties)) {
+        $properties[$property] = $new_value;
+      }
+      continue;
+    }
+    if ($property !== '$ref') {
+      continue;
+    }
+    $pattern = strstr($value, '.json', TRUE);
+    $ref = substr($value, strlen("$pattern.json"));
+    if (!isset($metadata[$pattern])) {
+      unset($properties->{$property});
+      continue;
+    }
+    $properties->{$property} = $metadata[$pattern]->url . $ref;
+  }
+  return $properties;
+}