Changeset 40:aaf5cd877e21 for src/mlx/config.py

Timestamp:

03/09/12 19:00:30 (12 years ago)

Author:

István Váradi <ivaradi@…>

Branch:

default

hg-Phase:

(<MercurialRepository 1 'hg:/home/ivaradi/mlx/hg' '/'>, 'public')

Message:

Added support to load and save the configuration

File:

• src/mlx/config.py (modified) (2 diffs)

src/mlx/config.py

@@ -1 +1 @@
 # Configuration and related stuff
+
+#-------------------------------------------------------------------------------
+
+import os
+import ConfigParser
+
+#-------------------------------------------------------------------------------
+
+configPath = os.path.join(os.path.expanduser("~"),
+                          "mlx.config" if os.name=="nt" else ".mlxrc")
 
 #-------------------------------------------------------------------------------
@@ -5 +15 @@
 class Config(object):
     """Our configuration."""
+    DEFAULT_UPDATE_URL = "http://mlx.varadiistvan.hu/update"
+    
     def __init__(self):
         """Construct the configuration with default values."""
-        self.autoUpdate = True
-        
-        self.updateURL = \
-            "http://mlx.varadiistvan.hu/update"
+
+        self._autoUpdate = True        
+        self._updateURL = Config.DEFAULT_UPDATE_URL
+
+        self._modified = False
+
+    @property
+    def autoUpdate(self):
+        """Get if an automatic update is needed."""
+        return self._autoUpdate
+
+    @autoUpdate.setter
+    def autoUpdate(self, autoUpdate):
+        """Set if an automatic update is needed."""
+        if autoUpdate!=self._autoUpdate:
+            self._autoUpdate = autoUpdate
+            self._modified = True
+
+    @property
+    def updateURL(self):
+        """Get the update URL."""
+        return self._updateURL
+
+    @updateURL.setter
+    def updateURL(self, updateURL):
+        """Set the update URL."""
+        if updateURL!=self._updateURL:
+            self._updateURL = updateURL
+            self._modified = True
+
+    def load(self):
+        """Load the configuration from its default location."""
+        config = ConfigParser.RawConfigParser()
+        config.read(configPath)
+
+        self._autoUpdate = self._getBoolean(config, "update", "auto", True)
+        self._updateURL = self._get(config, "update", "url",
+                                    Config.DEFAULT_UPDATE_URL)
+        self._modified = False
+
+    def save(self):
+        """Save the configuration file if it has been modified."""
+        if not self._modified:
+            return
+
+        config = ConfigParser.RawConfigParser()
+
+        config.add_section("update")
+        config.set("update", "auto", self._autoUpdate)
+        config.set("update", "url", self._updateURL)
+
+        try:
+            with open(configPath, "wt") as f:
+                config.write(f)
+            self._modified = False
+        except Exception, e:
+            print >> sys.stderr("Failed to update config: " + str(e))
+
+    def _getBoolean(self, config, section, option, default):
+        """Get the given option as a boolean, if found in the given config,
+        otherwise the default."""
+        return config.getboolean(section, option) \
+               if config.has_option(section, option) \
+               else default
+    
+    def _get(self, config, section, option, default):
+        """Get the given option as a string, if found in the given config,
+        otherwise the default."""
+        return config.get(section, option) \
+               if config.has_option(section, option) \
+               else default
 
 #-------------------------------------------------------------------------------