Add more robust CLI that provides rendering options

bin/marky-markdown.js

@@ -2,16 +2,65 @@
 var fs = require('fs')
 var path = require('path')
 var marky = require('..')
+var yargs = require('yargs')
+var omit = require('lodash').omit
 
-if (process.argv.length < 3) {
-  console.log('Usage:\n\nmarky-markdown some.md > some.html')
-  process.exit()
-}
+var argv = yargs
+  .usage([
+  'npm\'s markdown parser',
+  '',
+  'Usage: $0 [options] some.md > some.html'
+  ].join('\n'))
+  .version(function () {
+    return require('../package.json').version
+  })
+  .example(
+    '$0 --no-sanitize some.md > some.html',
+    'Parse "some.md" without sanitizing and redirect result to "some.html"'
+  )
+  .example(
+      '$0 --no-highlight README.md > index.html',
+      'Parse "README.md" without highlighting fenced code blocks and redirect result to "index.html"'
+  )
+  .option('sanitize', {
+    default: true,
+    describe: 'remove script tags and stuff',
+    type: 'boolean'
+  })
+  .option('linkify', {
+    default: true,
+    describe: 'turn orphan URLs into hyperlinks',
+    type: 'boolean'
+  })
+  .option('highlightSyntax', {
+    alias: 'highlight',
+    default: true,
+    describe: 'run highlights on fenced code blocks',
+    type: 'boolean'
+  })
+  .option('prefixHeadingIds', {
+    alias: 'prefix',
+    default: true,
+    describe: 'prevent DOM id collisions',
+    type: 'boolean'
+  })
+  .option('serveImagesWithCDN', {
+    alias: 'cdn',
+    default: false,
+    describe: 'use npm\'s CDN to proxy images over HTTPS',
+    type: 'boolean'
+  })
+  .demand(1)
+  .wrap(Math.min(125, yargs.terminalWidth()))
+  .argv
 
-var filePath = path.resolve(process.cwd(), process.argv[2])
+
+var options = omit(argv, ['_', 'version', 'highlight', 'prefix', 'cdn', '$0']);
+
+var filePath = path.resolve(process.cwd(), argv._[0])
 
 fs.readFile(filePath, function (err, data) {
   if (err) throw err
-  var $ = marky(data.toString())
+  var $ = marky(data.toString(), options)
   process.stdout.write($.html())
 })

package.json

@@ -50,7 +50,8 @@
     "markdown-it-expand-tabs": "^1.0.7",
     "property-ttl": "^1.0.0",
     "sanitize-html": "^1.6.1",
-    "similarity": "^1.0.1"
+    "similarity": "^1.0.1",
+    "yargs": "^3.32.0"
   },
   "devDependencies": {
     "glob": "^7.0.0",