Inherit directory context to subgraphs

CHANGES.md

@@ -6,6 +6,7 @@ NoFlo ChangeLog
 NoFlo internals:
 
 * The NoFlo `.fbp` parser now [guards against recursion](https://github.com/bergie/noflo/pull/57) on inline subgraphs
+* NoFlo subgraphs now inherit the directory context for component loading from the NoFlo process that loaded them
 
 New component libraries:
 

src/components/Graph.coffee

@@ -4,6 +4,7 @@ class Graph extends noflo.Component
   constructor: ->
     @network = null
     @ready = true
+    @baseDir = null
 
     @inPorts =
       graph: new noflo.Port()
@@ -21,6 +22,7 @@ class Graph extends noflo.Component
       graph = "#{process.cwd()}/#{graph}"
 
     graph = noflo.graph.loadFile graph, (instance) =>
+      instance.baseDir = @baseDir
       @createNetwork instance
 
   createNetwork: (graph) ->

src/lib/ComponentLoader.coffee

@@ -87,6 +87,7 @@ class ComponentLoader
     graphImplementation = require @components['Graph']
     graphSocket = internalSocket.createSocket()
     graph = graphImplementation.getComponent()
+    graph.baseDir = @baseDir
     graph.inPorts.graph.attach graphSocket
     graphSocket.send @components[name]
     graphSocket.disconnect()

src/lib/Network.coffee

@@ -28,6 +28,7 @@ class Network extends events.EventEmitter
     @connections = []
     @initials = []
     @graph = graph
+    @baseDir = graph.baseDir or process.cwd()
 
     # As most NoFlo networks are long-running processes, the
     # network coordinator marks down the start-up time. This
@@ -49,7 +50,7 @@ class Network extends events.EventEmitter
       @addEdge edge
     @graph.on 'removeEdge', (edge) =>
       @removeEdge edge
-    @loader = new componentLoader.ComponentLoader process.cwd()
+    @loader = new componentLoader.ComponentLoader @baseDir
 
   # The uptime of the network is the current time minus the start-up
   # time, in seconds.