Layer comp metadata

lib/psd/layer/info.coffee

@@ -9,6 +9,7 @@ LAYER_INFO = {
   layerId:                require('../layer_info/layer_id.coffee')
   layerNameSource:        require('../layer_info/layer_name_source.coffee')
   locked:                 require('../layer_info/locked.coffee')
+  metadataSetting:        require('../layer_info/metadata_setting.coffee')
   name:                   require('../layer_info/unicode_name.coffee')
   nestedSectionDivider:   require('../layer_info/nested_section_divider.coffee')
   sectionDivider:         require('../layer_info/section_divider.coffee')

lib/psd/layer_info/metadata_setting.coffee

+LayerInfo = require '../layer_info.coffee'
+Descriptor = require '../descriptor.coffee'
+
+module.exports = class LayerId extends LayerInfo
+  @shouldParse: (key) -> key is 'shmd'
+
+  parse: ->
+    count = @file.readInt()
+
+    for i in [0...count]
+      @file.seek 4, true
+
+      key = @file.readString(4)
+      
+      copyOnSheetDup = @file.readByte()
+      @file.seek 3, true #padding
+
+      len = @file.readInt()
+      end = @file.tell() + len
+
+      @parseLayerComps() if key is 'cmls'
+
+      @file.seek end
+
+  parseLayerComps: ->
+    @file.seek 4, true
+    @data.layerComp = new Descriptor(@file).parse()
\ No newline at end of file

lib/psd/nodes/root.coffee

@@ -35,7 +35,7 @@ module.exports = class Root extends Node
       width: @width
       height: @height
       resources:
-        layerComps: []
+        layerComps: @psd.resources.resource('layerComps').export()
         guides: []
         slices: []