Partial fix to #22. Laydi will require a project directory to run. If the

project directory does not exist, i.e. if a new project should be created, the
new -n switch is required. New syntax to run laydi is now
{{{
laydi [options] </path/to/project>
}}}

bin/laydi

@@ -3,7 +3,7 @@
 from getopt import getopt
 import os
 import sys
-from laydi import laydi, projectview, workflow, main
+from laydi import laydi, project, projectview, workflow, main
 #import workflows
 from laydi import cfgparse
 import optparse
@@ -73,11 +73,20 @@ def parse_options():
                  action='store_true',
                  help='Generate configuration file ~/.laydi if it does not exist.')
 
+    op.add_option('-n', '--new-project',
+                  action='store_true',
+                  help='Create new project directory.')
+
     for cf in conf_files:
         if os.path.isfile(cf):
             cp.add_file(cf)
 
-    return cp.parse(op)
+    options, params = cp.parse(op)
+    if len(params) != 1:
+        print "error: project directory must be specified."
+        sys.exit(1)
+        
+    return options, params
     
 if __name__ == '__main__':
     import gtk
@@ -86,6 +95,8 @@ if __name__ == '__main__':
     gnome.program_init(PROGRAM_NAME, VERSION)
 
     options, params = parse_options()
+
+    ## Workflow setup
     main.options = options
     
     for dir in main.options.workflowdir.split(';'):
@@ -112,8 +123,18 @@ if __name__ == '__main__':
     main.set_options(options)
     app = laydi.LaydiApp()
 
+    ## Project setup
+    prjroot = params[0]
+    if not project.is_project_directory(prjroot):
+        if options.new_project:
+            project.make_project_directory(prjroot)
+        else:
+            print "error: project directory not found: %s" % prjroot
+            print "notice: use the -n option to make a new project"
+            sys.exit(2)
+
     main.set_application(app)
-    main.set_projectview(projectview.ProjectView())
+    main.set_projectview(projectview.ProjectView(prjroot))
 
     app.set_projectview(main.projectview)
     app.show()