fix(create-markdown): filter non ASCII characters (#190)

Author: jorgeucano

schematics/scully/src/create-markdown/index.ts

@@ -8,16 +8,16 @@ import {
   applyWithOverwrite,
   getPrefix,
   getSrc,
-  getFileContents,
+  getFileContents, toAscii,
 } from '../utils/utils';
 import {RunSchematicTask} from '@angular-devkit/schematics/tasks';
 
 const SCULLY_CONF_FILE = '/scully.config.js';
 const ANGULAR_CONF_FILE = './angular.json';
 
 export default (options: Schema): Rule => {
-  options.name = options.name || 'blog';
-  options.slug = options.slug || 'id';
+  options.name = toAscii(options.name) || 'blog';
+  options.slug = toAscii(options.slug) || 'id';
   options.sourceDir = options.sourceDir || options.name;
   return chain([
     addPost(options, options.sourceDir),

schematics/scully/src/utils/utils.ts

@@ -229,3 +229,17 @@ export const yamlToJson = (filePath: string) => {
 };
 
 export const jsonToJaml = (metaData: {}) => yaml.safeDump(metaData);
+
+
+export const toAscii = (src: string) => {
+  // tslint:disable-next-line:one-variable-per-declaration
+  let ch, str, i, result = '';
+  str = JSON.stringify(src);
+  for (i = 1; i < str.length - 1; i++) {
+    ch = str.charCodeAt(i);
+    if (ch > 97) {
+      result += str.charAt(i);
+    }
+  }
+  return result;
+};