Added basic CLI support. Related to #60, #9

bin/markdown-it.js

@@ -0,0 +1,105 @@
+#!/usr/bin/env node
+/*eslint no-console:0*/
+
+'use strict';
+
+
+var fs = require('fs');
+var argparse = require('argparse');
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+var cli = new argparse.ArgumentParser({
+  prog: 'markdown-it',
+  version: require('../package.json').version,
+  addHelp: true
+});
+
+cli.addArgument([ '--no-html' ], {
+  help:   'Disable embedded HTML',
+  action: 'storeTrue'
+});
+
+cli.addArgument([ '-l', '--linkify' ], {
+  help:   'Autolink text',
+  action: 'storeTrue'
+});
+
+cli.addArgument([ '-t', '--typographer' ], {
+  help:   'Enable smartquotes and other typographic replacements',
+  action: 'storeTrue'
+});
+
+cli.addArgument([ '--trace' ], {
+  help:   'Show stack trace on error',
+  action: 'storeTrue'
+});
+
+cli.addArgument([ 'file' ], {
+  help: 'File to read',
+  nargs: '?',
+  defaultValue: '-'
+});
+
+var options = cli.parseArgs();
+
+
+function readFile(filename, encoding, callback) {
+  if (options.file === '-') {
+    // read from stdin
+    var chunks = [];
+
+    process.stdin.on('data', function(chunk) { chunks.push(chunk); });
+
+    process.stdin.on('end', function() {
+      return callback(null, Buffer.concat(chunks).toString(encoding));
+    });
+  } else {
+    fs.readFile(filename, encoding, callback);
+  }
+}
+
+
+////////////////////////////////////////////////////////////////////////////////
+
+readFile(options.file, 'utf8', function (err, input) {
+  var output, md;
+
+  if (err) {
+    if (err.code === 'ENOENT') {
+      console.error('File not found: ' + options.file);
+      process.exit(2);
+    }
+
+    console.error(
+      options.trace && err.stack ||
+      err.message ||
+      String(err));
+
+    process.exit(1);
+  }
+
+  md = require('..')({
+    html: !options['no-html'],
+    xhtmlOut: false,
+    typographer: options.typographer,
+    linkify: options.linkify
+  });
+
+  try {
+    output = md.render(input);
+
+  } catch (e) {
+    console.error(
+      options.trace && e.stack ||
+      e.message ||
+      String(e));
+
+    process.exit(1);
+  }
+
+  process.stdout.write(output);
+
+  process.exit(0);
+});

package.json

@@ -19,11 +19,12 @@
   },
   "license": "MIT",
   "main": "index.js",
+  "bin": { "markdown-it": "bin/markdown-it.js" },
   "scripts": {
     "test": "make test"
   },
   "dependencies": {
-    "argparse": "~ 0.1.16",
+    "argparse": "~ 1.0.0",
     "autolinker": "~ 0.15.2",
     "uc.micro": "~ 0.1.0"
   },