Add --list option to hdlmake

--list enables people to list content of their modules.
Indentation makes easier visual recognition of the
content.

src/__main__.py

@@ -52,6 +52,9 @@ def main():
     parser.add_option("--clean", action="store_true", dest="clean",
     help="remove all modules fetched for this one")
 
+    parser.add_option("--list", action="store_true", dest="list",
+    help="List all modules togather with their files")
+
     parser.add_option("--ise-proj", action="store_true", dest="ise_proj",
     help="create/update an ise project including list of project files")
 
@@ -115,6 +118,8 @@ def main():
         kernel.generate_ise_makefile()
     elif options.make_remote == True:
         kernel.generate_remote_synthesis_makefile()
+    elif options.list == True:
+        kernel.list_modules()
     elif options.clean == True:
         kernel.clean_modules()
     else:

src/hdlmake_kernel.py

@@ -52,6 +52,20 @@ class HdlmakeKernel(object):
             p.rawprint("Allowed actions are:\n\tsimulation\n\tsynthesis")
             quit()
 
+    def list_modules(self):
+        import path
+        for m in self.modules_pool:
+            if m.path == os.getcwd():
+                print(".")
+            else:
+                print(path.relpath(m.path))
+            if not len(m.files):
+                print("   # no files")
+            else:
+                for f in m.files:
+                    print("   " + path.relpath(f.path, m.path))
+            print("")
+            
     def fetch(self, unfetched_only = False):
         p.rawprint("Fetching needed modules...")
         self.modules_pool.fetch_all(unfetched_only)