Split the dependency system to its own file, to have better readability when new features are introduced

2 files changed, 69 insertions, 40 deletions

diff --git a/pyfirstaidkit/dependency.py b/pyfirstaidkit/dependency.py
new file mode 100644
index 0000000..2871e21
--- /dev/null
+++ b/pyfirstaidkit/dependency.py
@@ -0,0 +1,68 @@
+# File name: dependency.py
+# Date:      2008/04/18
+# Author:    Martin Sivak
+#
+# Copyright (C) Red Hat 2008
+#
+# This program is free software; you can redistribute it and/or
+# modify it under the terms of the GNU General Public License as
+# published by the Free Software Foundation; either version 2 of the
+# License, or (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# in a file called COPYING along with this program; if not, write to
+# the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA
+# 02139, USA.
+
+import logging
+import copy
+from errors import *
+
+Logger=logging.getLogger("firstaidkit")
+
+class RunDependencies(object):
+    """Encapsulate flags used to control the dependencies between plugins"""
+    def __init__(self):
+        self._provide = set()
+        self._known = set()
+
+    def provide(self, id, setactionflag = True):
+        """Add flag"""
+        Logger.info("Setting dependency flag %s", id)
+        self._provide.add(id)
+        if setactionflag: self._provide.add(id+"?") #Action flags denote activity happening on some regular flag
+    
+    def unprovide(self, id, setactionflag = True):
+        """Remove flag"""
+        Logger.info("Resetting dependency flag %s", id)
+        try:
+            self._provide.remove(id)
+        except KeyError: #not there
+            pass
+        if setactionflag: self._provide.add(id+"?")
+
+    donotprovide = unprovide #alias
+    failed = unprovide #alias
+
+    def require(self, id):
+        """Return True if flag is present, otherwise false"""
+        return id in self._provide
+
+    def introduce(self, s):
+        """Notifies the system about dependency names used in the plugins, so we can list them in help"""
+        self._known = self._known.union(s)
+
+    def known(self):
+        """Returns list of known flags"""
+        return list(self._known)
+    
+    def valid(self):
+        """Returns list of valid/provided flags"""
+        return list(self._provide)
+
+
diff --git a/pyfirstaidkit/interpret.py b/pyfirstaidkit/interpret.py
index 5217939..be54035 100644
--- a/pyfirstaidkit/interpret.py
+++ b/pyfirstaidkit/interpret.py
@@ -22,49 +22,10 @@ import logging
 import copy
 from errors import *
 from utils import FileBackupStore
+from dependency import RunDependencies
 
 Logger=logging.getLogger("firstaidkit")
 
-class RunDependencies(object):
-    """Encapsulate flags used to control the dependencies between plugins"""
-    def __init__(self):
-        self._provide = set()
-        self._known = set()
-
-    def provide(self, id, setactionflag = True):
-        """Add flag"""
-        Logger.info("Setting dependency flag %s", id)
-        self._provide.add(id)
-        if setactionflag: self._provide.add(id+"?") #Action flags denote activity happening on some regular flag
-    
-    def unprovide(self, id, setactionflag = True):
-        """Remove flag"""
-        Logger.info("Resetting dependency flag %s", id)
-        try:
-            self._provide.remove(id)
-        except KeyError: #not there
-            pass
-        if setactionflag: self._provide.add(id+"?")
-
-    donotprovide = unprovide #alias
-    failed = unprovide #alias
-
-    def require(self, id):
-        """Return True if flag is present, otherwise false"""
-        return id in self._provide
-
-    def introduce(self, s):
-        """Notifies the system about dependency names used in the plugins, so we can list them in help"""
-        self._known = self._known.union(s)
-
-    def known(self):
-        """Returns list of known flags"""
-        return list(self._known)
-    
-    def valid(self):
-        """Returns list of valid/provided flags"""
-        return list(self._provide)
-
 class Tasker:
     """The main interpret of tasks described in Config object"""