added again

Author: bahmutov

bin/has-commit-message.js

@@ -0,0 +1,45 @@
+#!/usr/bin/env node
+
+'use strict'
+
+// exits with 0 if there is a commit JSON message
+// exits with 1 if there is NO commit JSON message
+
+const allArgs = process.argv.slice(2)
+const args = require('minimist')(allArgs, {
+  alias: {
+    file: 'f',
+    sha: 'commit'
+  },
+  string: ['file', 'sha']
+})
+
+const api = require('..')
+const getMessage = api.getMessage
+const getJsonBlock = api.getJsonBlock
+
+function onError (e) {
+  console.error(e)
+  process.exit(1)
+}
+
+let start
+if (args.file) {
+  console.log('loading message from file', args.file)
+  const fs = require('fs')
+  const message = fs.readFileSync(args.file, 'utf8')
+  start = Promise.resolve(message)
+} else {
+  start = getMessage(args.sha)
+}
+start
+  .then(getJsonBlock)
+  .then(json => {
+    if (!json) {
+      console.log('cannot find JSON install block')
+      process.exit(1)
+    }
+    console.log('found JSON install block')
+    process.exit(0)
+  })
+  .catch(onError)