styles GYP should bundle sprites

[incanus]

Currently the gyp/styles.gypi only bundles the stylesheets, not the sprites. It we add the sprites, plus finish up asset:// handling over in #579, we can modify the styles to read local sprite assets and save on load time in most use cases.

Probably doesn't make sense to mirror this whole bundling + asset:// handling in gl-js since resources there will always be remote.

/cc @mapbox/gl

[ljbade]

Great idea.

[ljbade]

@incanus How are you structuring the asset:// stuff. I am planning to set up a platform class similar to how we plug in logging etc on Linux vs iOS.

[mikemorris]

@incanus @ljbade I've started some work on breaking out the FileSource backend over in the caching-http-file-source branch, lets chat briefly about roadmap if this seems like a good direction.

/cc @jfirebaugh

[incanus]

How are you structuring the asset:// stuff. I am planning to set up a platform class similar to how we plug in logging etc on Linux vs iOS.

Basic approach for iOS/OS X is:

1. Assert asset:// scheme (asset://styles/styles/bright-v6.json)
2. Replace it with empty string (styles/styles/bright-v6.json)
3. Parse out path, file basename, and extension (styles/styles, bright-v6, json)
4. Pass these to -[NSBundle pathForResource:ofType:inDirectory:] to locate the bundled asset

[ljbade]

Just saw this, looks good.

[1ec5]

We’re getting rid of style bundling altogether in #674.