Add node searching and fix the browserify compile

Cakefile

+fs = require 'fs'
+browserify = require 'browserify'
+
+task 'compile', 'Compile with browserify for the web', ->
+  browserify
+    noParse: [
+      'fs'
+    ]
+  .transform('coffeeify')
+  .require('./shims/png.coffee', expose: './image_exports/png.coffee')
+  .add('./lib/psd.coffee')
+  .bundle (err, src) ->
+    throw err if err?
+    fs.writeFile './dist/psd.js', src, ->
+      console.log "Compiled to ./dist/psd.js"
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lib/psd/descriptor.coffee

+module.exports = class Descriptor
+  constructor: (@file) ->
+    @data = {}
+
+  parse: ->
+    @data.class = @parseClass()
+    numItems = @file.readInt()
+
+    for i in [0...numItems]
+      id, value = @parseKeyItem()
+      @data[id] = value
+
+    @data
+
+  parseClass: ->
+    name: @file.readUnicodeString()
+    id: @parseId()
+
+  parseId: ->
+    len = @file.readInt()
+    if len is 0 then @file.readString(4) else @file.readString(len)
+
+  parseKeyItem: ->
+    id = @parseId()
+    value = @parseItem()
+    return id, value
+
+  parseItem: (type = null) ->
+    type = @file.readString(4) unless type?
+
+    switch type
+      when 'bool'         then @parseBoolean()
+      when 'type', 'GlbC' then @parseClass()
+      when 'Objc', 'GlbO' then new Descriptor(@file).parse()
+      when 'doub'         then @parseDouble()
+      when 'enum'         then @parseEnum()
+      when 'alis'         then @parseAlias()
+      when 'Pth'          then @parseFilePath()
+      when 'long'         then @parseInteger()
+      when 'comp'         then @parseLargeInteger()
+      when 'VlLs'         then @parseList()
+      when 'ObAr'         then @parseObjectArray()
+      when 'tdta'         then @parseRawData()
+      when 'obj '         then @parseReference()
+      when 'TEXT'         then @file.readUnicodeString()
+      when 'UntF'         then @parseUnitDouble()
+      when 'UnFl'         then @parseUnitFloat()
+
+  parseBoolean: -> @file.readBoolean()
+  parseDouble: -> @file.readDouble()
+  parseInteger: -> @file.readInt()
+  parseLargeInteger: -> @file.readLongLong()
+  parseIdentifier: -> @file.readInt()
+  parseIndex: -> @file.readInt()
+  parseOffset: -> @file.readInt()
+
+  parseProperty: ->
+    class: @parseClass()
+    id: @parseId()
+
+  parseEnum: ->
+    type: @parseId()
+    value: @parseId()
+
+  parseEnumReference: ->
+    class: @parseClass()
+    type: @parseId()
+    value: @parseId()
+
+  parseAlias: ->
+    len = @file.readInt()
+    @file.readString(len)
+
+  parseFilePath: ->
+    len = @file.readInt()
+    sig = @file.readString(4)
+
+    # Little endian
+    pathSize = @file.read('<i')
+    numChars = @file.read('<i')
+
+    path = @file.readUnicodeString(numChars)
+
+    sig: sig
+    path: path
+
+  parseList: ->
+    count = @file.readInt()
+    items = []
+
+    for i in [0...count]
+      items.push @parseItem()
+
+    items
+
+  parseObjectArray: ->
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lib/psd/file.coffee

@@ -21,6 +21,9 @@ module.exports = class File
     Double:
       code: '>d'
       length: 8
+    LongLong:
+      code: '>q'
+      length: 8
 
   for own format, info of FORMATS then do (format, info) =>
     @::["read#{format}"] = -> @readf(info.code, info.length)[0]
@@ -47,4 +50,5 @@ module.exports = class File
       .join('')
       .replace(/\u0000/g, '')
 
-  readByte: -> @read(1)[0]
+  readByte: -> @read(1)[0]
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+  readBoolean: -> readByte() isnt 0
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lib/psd/nodes/search.coffee

+_ = require 'lodash'
+
+module.exports =
+  childrenAtPath: (path, opts = {}) ->
+    unless Array.isArray(path)
+      path = path.split('/').filter((p) -> p.length > 0)
+
+    path = _.clone(path)
+    query = path.shift()
+    matches = @children().filter (c) ->
+      if opts.caseSensitive
+        c.name is query
+      else
+        c.name.toLowerCase() is query.toLowerCase()
+
+    if path.length is 0
+      return matches
+    else
+      return _.flatten matches.map (m) ->
+        m.childrenAtPath(_.clone(path), opts)
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package.json

@@ -4,18 +4,13 @@
   "dependencies": {
     "coffee-script": "~ 1.7.1",
     "jspack": "~ 0.0.3",
-    "coffeescript-module": "~ 0.0.2",
+    "coffeescript-module": "~ 0.1.1",
     "png": "~ 3.0.3",
     "rsvp": "~ 3.0.6",
     "lodash": "~ 2.4"
   },
   "devDependencies": {
-    "coffeeify": "~ 0.6.0"
-  },
-  "browserify": {
-    "transform": ["coffeeify"]
-  },
-  "scripts": {
-    "compile": "browserify ./lib/psd.coffee > ./dist/psd.js"
+    "coffeeify": "~ 0.6.0",
+    "browserify": "~ 3.46.0"
   }
 }
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shims/png.coffee

+module.exports = 
+  toPng: ->
+    new RSVP.Promise (resolve, reject) =>
+      # Draw the pixels to the canvas
+      canvas = document.createElement('canvas')
+      canvas.width = @width()
+      canvas.height = @height()
+      context = canvas.getContext('2d')
+
+      imageData = context.getImageData(0, 0, @width(), @height())
+      pixelData = imageData.data
+
+      pixelData[i] = pixel for pixel, i in @pixelData
+
+      # Create the image and set the source to the
+      # canvas data URL.
+      image = new Image()
+      image.width = @width()
+      image.height = @height()
+      image.src = canvas.toDataURL 'image/png'
+
+      resolve(image)
+
+  saveAsPng: ->
+    throw "Not available in the browser. Use toPng() instead."
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