introduced yaml formatting, improved error check

package.json

@@ -23,11 +23,13 @@
   ],
   "license": "MIT",
   "devDependencies": {
+    "@types/js-yaml": "^4.0.5",
     "@types/node": "^16.11.6",
     "@typescript-eslint/eslint-plugin": "^5.2.0",
     "@typescript-eslint/parser": "^5.2.0",
     "builtin-modules": "^3.2.0",
     "esbuild": "0.13.12",
+    "js-yaml": "^4.1.0",
     "obsidian": "latest",
     "tslib": "2.3.1",
     "typescript": "^4.4.4"

src/img-gallery-renderer.ts

@@ -1,4 +1,5 @@
 import { App, MarkdownRenderChild, TFolder, TFile, Platform, normalizePath } from 'obsidian'
+import * as jsyaml from 'js-yaml'
 import ImgGallery from './main'
 
 export class imgGalleryRenderer extends MarkdownRenderChild {
@@ -25,26 +26,27 @@ export class imgGalleryRenderer extends MarkdownRenderChild {
   }
 
   async onunload() {
-    this._gallery.remove()
-    this._gallery = null
+    if (this._gallery) {
+      this._gallery.remove()
+      this._gallery = null
+    }
   }
 
   private _getSettings() {
     // parse the settings from the code block
-    const settingsObj: {[key: string]: string} = {}
-
-    this.src.split('\n')
-      .filter((row) => row.length > 0)
-      .forEach((item) => {
-        const setting = item.split('=')
-        settingsObj[setting[0]] = setting[1]
-      })
+    const settingsObj: any = jsyaml.load(this.src)
 
     // check for required settings
+    if (settingsObj === undefined) {
+      const error = 'Cannot parse YAML!'
+      this._renderError(error)
+      throw new Error(error)
+    }
+
     if (!settingsObj.path) {
       const error = 'Please specify a path!'
       this._renderError(error)
-      throw new Error(error);
+      throw new Error(error)
     }
 
     // store settings, normalize and set sensible defaults
@@ -74,7 +76,7 @@ export class imgGalleryRenderer extends MarkdownRenderChild {
     else {
       const error = 'The folder doesn\'t exist, or it\'s empty!'
       this._renderError(error)
-      throw new Error(error);
+      throw new Error(error)
     }
 
     // filter the list of files to make sure we're dealing with images only