allow for easier editing of style in Xcode

* write protobuf directly to file instead of stdout (for Gyp)
 * add style.js to editable sources
 * add build phases for pbf conversion & resources updates
 * update README style directions

README.md

@@ -111,7 +111,7 @@ proto/style.proto. The reason for doing so is that we don't have to ship with a
 JSON/yaml parser. To test the conversion script, run
 
 ```
-bin/convert-style.js | protoc --decode=style proto/style.proto
+bin/convert-style.js && cat resources/style.pbf | protoc --decode=style proto/style.proto
 ```
 
 You should see a nicely formatted hierarchical output of the converted style.
@@ -120,9 +120,10 @@ You should see a nicely formatted hierarchical output of the converted style.
 To update the included default style, use
 
 ```
-bin/convert-style.js > resources/style.pbf && bin/build-style.js
+bin/convert-style.js && bin/build-style.js
 ```
 
+This is automatically taken care of as a build phase if you are using the Xcode projects. 
 
 # Usage
 

bin/convert-style.js

@@ -4,6 +4,7 @@
 
 var style = require('./style.js');
 var Protobuf = require('./protobuf.js');
+var fs = require('fs');
 
 // var fs = require('fs');
 
@@ -212,4 +213,4 @@ for (var i = 0; i < style.classes.length; i++) {
     pbf.writeMessage(3 /* class */, createClass(klass));
 }
 
-process.stdout.write(pbf.finish());
+fs.writeFileSync('resources/style.pbf', pbf.finish());

llmr.gyp

@@ -11,7 +11,8 @@
       'sources': [
         '<!@(find src -name "*.cpp")',
         '<!@(find include -name "*.hpp")',
-        '<!@(find src -name "*.glsl")'
+        '<!@(find src -name "*.glsl")',
+        'bin/style.js'
       ],
       'actions': [
         {
@@ -25,6 +26,27 @@
           ],
           'action': ['bin/build-shaders.js'],
         },
+        {
+          'action_name': 'Convert Style to Protobuf',
+          'inputs': [
+            'bin/style.js'
+          ],
+          'outputs': [
+            'resources/style.pbf'
+          ],
+          'action': ['bin/convert-style.js'],
+        },
+        {
+          'action_name': 'Update Style Resources',
+          'inputs': [
+            'resources/style.pbf'
+          ],
+          'outputs': [
+            'include/llmr/style/resources.hpp',
+            'src/style/resources.cpp'
+          ],
+          'action': ['bin/build-style.js']
+        }
       ],
       'xcode_settings': {
         'SDKROOT': 'macosx',
@@ -75,7 +97,8 @@
       'sources': [
         '<!@(find src -name "*.cpp")',
         '<!@(find include -name "*.hpp")',
-        '<!@(find src -name "*.glsl")'
+        '<!@(find src -name "*.glsl")',
+        'bin/style.js'
       ],
       'actions': [
         {
@@ -89,6 +112,27 @@
           ],
           'action': ['bin/build-shaders.js'],
         },
+        {
+          'action_name': 'Convert Style to Protobuf',
+          'inputs': [
+            'bin/style.js'
+          ],
+          'outputs': [
+            'resources/style.pbf'
+          ],
+          'action': ['bin/convert-style.js'],
+        },
+        {
+          'action_name': 'Update Style Resources',
+          'inputs': [
+            'resources/style.pbf'
+          ],
+          'outputs': [
+            'include/llmr/style/resources.hpp',
+            'src/style/resources.cpp'
+          ],
+          'action': ['bin/build-style.js']
+        }
       ],
       'xcode_settings': {
         'SDKROOT': 'iphoneos',