Merge pull request ember-learn#589 from ember-learn/extract-code-script

add script for extracting code blocks

Author: jenweber

.gitignore

@@ -25,3 +25,5 @@
 
 # Deployment credentials
 config/credentials.json
+
+/code

extractCode.js

@@ -0,0 +1,53 @@
+/* eslint-env node */
+/* eslint no-console:0 */
+
+const walkSync = require('walk-sync');
+const _ = require('lodash');
+const codeBlocks = require('gfm-code-blocks');
+const { extname, join, dirname } = require('path');
+const {
+  readFileSync,
+  writeFileSync,
+  mkdirSync,
+  existsSync,
+} = require('fs');
+
+// these regexs are used against the lang definition of a code block to identify
+// the language. If you only want to check certain types then you should change
+// this line
+const templatesMatch = /^(handlebars|html|text|javascript|bash|sh|css|hbs|json|apacheconf)/;
+
+const mdFiles = _.chain(walkSync('guides/release'))
+  .filter(path => extname(path) === '.md')
+  .value();
+
+mdFiles.forEach((filename) => {
+  const source = readFileSync(join(__dirname, 'guides', 'release', filename), 'utf-8');
+  // console.log(filename);
+  const blocks = codeBlocks(source);
+
+  const codeOnly = blocks.reduce((prev, current) => {
+    if (!current.lang) {
+      console.error(`Missing lang in code block on ${filename}`);
+    }
+
+    if (current.lang.match(templatesMatch)) {
+      return `${prev}\n\n${current.block}`;
+    }
+
+    console.log(`Ignoring language ${current.lang}`);
+    return prev;
+  }, '');
+
+  if (codeOnly) {
+    const newFilename = join(__dirname, 'code', filename);
+
+    if (!existsSync(dirname(newFilename))) {
+      mkdirSync(dirname(newFilename), {
+        recursive: true,
+      });
+    }
+
+    writeFileSync(join(__dirname, 'code', filename), codeOnly);
+  }
+});

package-lock.json

@@ -68,6 +68,7 @@
     "eslint-config-airbnb-base": "^13.0.0",
     "eslint-plugin-ember": "^6.3.0",
     "eslint-plugin-import": "^2.16.0",
+    "gfm-code-blocks": "^1.0.0",
     "guidemaker": "^1.3.0",
     "guidemaker-ember-template": "^1.1.0",
     "loader.js": "^4.7.0",