pbxproj/lib/exporter.js

parse & stringify xcode pbxproj format

'use strict';

/*
 * Module dependencies
 */

var _ = require('lodash');
var handlebars = require('handlebars');

/*
 * Inline templates
 */

var OBJ_TPL = handlebars.compile('{{#if key}}{{{key}}} = {{/if}}{');
var ARRAY_TPL = handlebars.compile('{{#if key}}{{{key}}} = {{/if}}(');
var VALUE_TPL = handlebars.compile('{{#if key}}{{{key}}} = {{/if}}{{{value}}};');

/*
 * Constructor
 */

var PBXProjExporter = module.exports = function () {
  _.bindAll(this, 'writeValue');

  this.obj = {};
};

/*
 * Reset data and level before object iteration
 */

PBXProjExporter.prototype.reset = function () {
  this.level = 0;
  this.data = '';
  this.writeLine('// !$*UTF8*$!');
};

/*
 * Write line into data regarding current level (indent)
 */

PBXProjExporter.prototype.writeLine = function (line) {
  this.data += _.range(this.level).map(function () {
    return '\t';
  }).join('') + line + '\n';
};

/*
 * Main API : returns pbxproj string equivalent to a given object
 */

PBXProjExporter.prototype.stringify = function (obj) {
  if (!_.isObject(obj) || _.isArray(obj)) throw 'not an object';

  this.reset();
  this.writeObject(obj, null);
  return this.data;    
};

/*
 * Iter into Object and write serialization to data
 */

PBXProjExporter.prototype.writeObject = function (obj, key) {
  this.writeLine(OBJ_TPL({key: key}));
  this.level++;
  _.each(obj, this.writeValue);
  this.level--;
  this.writeLine('};');
};

/*
 * Iter into Array and write serialization to data
 */

PBXProjExporter.prototype.writeArray = function (array, key) {
  this.writeLine(ARRAY_TPL({key: key}));
  this.level++;
  _.each(array, function (value) {
    this.writeValue(value);
  }, this);
  this.level--;
  this.writeLine(');');
};

/*mak
 * Check value type and use correct writer (Object / Array / Value[String, Number...])
 */

PBXProjExporter.prototype.writeValue = function (value, key) {
  if (_.isArray(value)) {
    this.writeArray(value, key);
  } else if (_.isObject(value)) {
    this.writeObject(value, key);    
  } else {
    this.writeLine(VALUE_TPL({key: key, value: value}));
  }
};