The main codes

init-package-json.js

@@ -0,0 +1,88 @@
+
+module.exports = init
+
+var PZ = require('promzard').PromZard
+var path = require('path')
+var def = require.resolve('./default-input.js')
+
+var fs = require('fs')
+var semver = require('semver')
+var read = require('read')
+
+// to validate the data object at the end as a worthwhile package
+// and assign default values for things.
+// readJson.extras(file, data, cb)
+var readJson = require('read-package-json')
+
+function init (dir, input, config, cb) {
+  if (typeof config === 'function')
+    cb = config, config = {}
+  var package = path.resolve(dir, 'package.json')
+  input = path.resolve(input)
+  var pkg
+  var ctx = {}
+
+  readJson(package, function (er, d) {
+    if (er) pkg = {}
+    else pkg = d
+
+    ctx.filename = package
+    ctx.dirname = path.dirname(package)
+    ctx.basename = path.basename(ctx.dirname)
+    if (!pkg.version || !semver.valid(pkg.version))
+      delete pkg.version
+
+    ctx.package = pkg
+    ctx.config = config || {}
+
+    // make sure that the input is valid.
+    // if not, use the default
+    var pz = new PZ(input, ctx)
+    pz.backupFile = def
+    pz.on('error', cb)
+    pz.on('data', function (data) {
+      Object.keys(data).forEach(function (k) {
+        if (data[k] !== undefined && data[k] !== null) pkg[k] = data[k]
+      })
+      readJson.extras(package, pkg, function (er, pkg) {
+        if (er) return cb(er, pkg)
+        pkg = unParsePeople(pkg)
+        // no need for the readme now.
+        delete pkg.readme
+        var d = JSON.stringify(pkg, null, 2) + '\n'
+        console.log('About to write to %s:\n\n%s\n', package, d)
+        read({prompt:'Is this ok? ', default: 'yes'}, function (er, ok) {
+          if (!ok || ok.toLowerCase().charAt(0) !== 'y') {
+            console.log('Aborted.')
+          } else {
+            fs.writeFile(package, d, 'utf8', function (er) {
+              return cb(er, pkg)
+            })
+          }
+        })
+      })
+    })
+  })
+
+}
+
+// turn the objects into somewhat more humane strings.
+function unParsePeople (data) {
+  if (data.author) data.author = unParsePerson(data.author)
+  ;["maintainers", "contributors"].forEach(function (set) {
+    if (!Array.isArray(data[set])) return;
+    data[set] = data[set].map(unParsePerson)
+  })
+  return data
+}
+
+function unParsePerson (person) {
+  if (typeof person === "string") return person
+  var name = person.name || ""
+  var u = person.url || person.web
+  var url = u ? (" ("+u+")") : ""
+  var e = person.email || person.mail
+  var email = e ? (" <"+e+">") : ""
+  return name+email+url
+}
+