yapm/node_modules/package-yaml/plugins/indexjs.js

package manager for io.js (npm fork)

var Path = require('path')
var read = require('../utils').read
var write = require('../utils').write
var stat = require('../utils').fs.stat

module.exports.read = function(path, cb) {
  read(Path.join(path, 'index.js'), 'utf8', function(err, data) {
    if (err) return cb(err)
    data = parseIndex(data)
    if (data == null) {
      var er = Error('no package info here')
      er.code = 'ENOENT'
      return cb(er)
    }
    cb(null, data)
  })
}

module.exports.write = function(path, object, cb) {
  // think about this as "not implemented", but this is what npm does
  write(Path.join(path, 'package.json'), JSON.stringify(object, null, 2) + '\n', cb)
}

module.exports.stat = function(path, cb) {
  read(path, function(err, data) {
    if (err) return cb(err)
    stat(Path.join(path, 'index.js'), function(er, stat) {
      if (stat) stat.file = Path.join(path, 'index.js')
      cb(er, stat)
    })
  })
}

// /**package { "name": "foo", "version": "1.2.3", ... } **/
function parseIndex (data) {
  data = data.split(/^\/\*\*package(?:\s|$)/m)
  if (data.length < 2) return null
  data = data[1]
  data = data.split(/\*\*\/$/m)
  if (data.length < 2) return null
  data = data[0]
  data = data.replace(/^\s*\*/mg, "")
  try {
    return JSON.parse(data)
  } catch (er) {
    return null
  }
}