Add Dirrer for creating directories

dotbot/executor/__init__.py

@@ -2,3 +2,4 @@ from .executor import Executor
 from .linker import Linker
 from .cleaner import Cleaner
 from .commandrunner import CommandRunner
+from .dirrer import Dirrer

dotbot/executor/dirrer.py

@@ -0,0 +1,46 @@
+import os
+from . import Executor
+
+class Dirrer(Executor):
+    '''
+    Creates directories.
+    '''
+
+    _directive = 'dir'
+
+    def can_handle(self, directive):
+        return directive == self._directive
+
+    def handle(self, directive, data):
+        if directive != self._directive:
+            raise ValueError('Dirrer cannot handle directive %s' % directive)
+        return self._process_dir(data)
+
+    def _process_dir(self, targets):
+        success = True
+        for target in targets:
+            success &= self._dir(target)
+        if success:
+            self._log.info('All directories have been created')
+        else:
+            self._log.error('Some directories were not successfully created')
+        return success
+
+    def _dir(self, target):
+        '''
+        Creates directories, including intermediate directories.
+        '''
+        expanded_target = os.path.expanduser(target)
+        
+        if os.path.isdir(expanded_target):
+            return True
+
+        if os.path.isfile(expanded_target):
+            return False
+
+        try:
+            os.makedirs(expanded_target)
+        except:
+            return False
+
+        return True