rendering icon fetching

src/rendering.js

@@ -7,6 +7,14 @@ try {
   console.error('fa-diagrams: SVG list could not be loaded', err);
 }
 
+/**
+ * @typedef Node2
+ * @property {string} name
+ * @property {number} x
+ * @property {number} y
+ * @property {string} icon
+ */
+
 const DEFAULT_OPTIONS = {
   'beautify': false
 };
@@ -15,6 +23,56 @@ module.exports = (options = DEFAULT_OPTIONS) => {
   const self = {
     defaultOptions: DEFAULT_OPTIONS,
 
+    /**
+     * Find icon data from given name
+     * @param {string} name
+     * @returns {null|{path: string, width: number}}
+     */
+    getIcon: (name) => {
+      if (!name || !name.trim())
+        return null;
+
+      let search = ['solid', 'regular', 'brands'];
+      const spl = name.trim().split(' ').map(t => t.indexOf('fa-') === 0 ? t.substr(3) : t);
+
+      const checkType = (type, keywords) => {
+        if (search.length > 1) // else it's already found
+          keywords.forEach(kw => {
+            const i = spl.indexOf(kw);
+            if (i >= 0) {
+              spl.splice(i, 1);
+              search = [type];
+            }
+          });
+      };
+
+      checkType('solid', ['fas', 'solid']);
+      checkType('regular', ['far', 'regular']);
+      checkType('brands', ['fab', 'brands']);
+
+      name = spl[0];
+
+      for (let i = 0; i < search.length; i++) {
+        if (list[search[i]] && list[search[i]][name]) {
+          return list[search[i]][name];
+        }
+      }
+
+      return null;
+    },
+
+    /**
+     * @param {Object<string,Node2>} nodes
+     * @returns {Object}
+     */
+    renderNodes: (nodes) => {
+      const g = [];
+      Object.values(nodes).forEach(() => {
+        //TODO
+      });
+      return {'g': g};
+    },
+
     /**
      * Convert xml-js data into correct svg xml string
      * @param {Object} data
@@ -40,8 +98,9 @@ module.exports = (options = DEFAULT_OPTIONS) => {
       });
     },
 
-    compute: () => {
-      return self.toXML({}, 0, 0); //TODO temporary
+    compute: (nodes) => {
+      const data = self.renderNodes(nodes);
+      return self.toXML(data, 0, 0); //TODO temporary
     }
   };