Changeset 79 for epics2xml/epics2xml.py

Timestamp:

Nov 6, 2009 10:35:02 AM (14 years ago)

Author:

jemian

Message:

Refs #2: progress ...

File:

• epics2xml/epics2xml.py (modified) (7 diffs)

epics2xml/epics2xml.py

@@ -27 +27 @@
 from xml.dom import minidom
 import datetime
-import copy
-import pvConnect
+#import copy
+#import pvConnect
 
 
@@ -46 +46 @@
 
     def GetConfigFile(self):
-        '''@return: name of XML settings file'''
-        return self.settingsFile
+        '''@return: name of XML configuration file'''
+        return self.configFile
 
     def SetConfigFile(self, thefile):
         '''set the name of XML configuration file
             @param thefile: [string] name of XML file with the configuration'''
-        self.settingsFile = thefile
+        self.configFile = thefile
 
     def Clear(self):
@@ -58 +58 @@
         self.db = {}
 
+    def ReadConfigFile(self):
+        '''read the configuration from a file into an internal dictionary (self.db)
+
+            @note: this method uses xml.dom.minidom (built into all Pythons)
+            @see: http://docs.python.org/library/xml.dom.minidom.html
+        '''
+        try:
+            doc = minidom.parse(self.configFile) # parse an XML file by name
+            assert doc.documentElement.tagName == self.rootElement
+        except IOError:
+            return 'Could not read the XML file: ' + self.configFile
+        except AssertionError:
+            return 'XML root element is not ' + self.rootElement
+        #... read all attributes from the root element
+        docElem = doc.documentElement
+        self.Clear()
+        version = self._get_attribute(docElem, "version", "not-specified")
+        try:
+            # only handle v1.0 resource configuration files
+            assert version == u'1.0'
+        except AssertionError:
+            doc.unlink()
+            return 'Cannot handle file version:', version
+        # file verified now
+
     def ReadXmlFile(self):
         '''read the settings from a file into an internal dictionary (self.db)
@@ -65 +90 @@
         '''
         try:
-            doc = minidom.parse(self.settingsFile) # parse an XML file by name
+            doc = minidom.parse(self.configFile) # parse an XML file by name
             assert doc.documentElement.tagName == self.rootElement
         except IOError:
-            return 'Could not read the XML file: ' + self.settingsFile
+            return 'Could not read the XML file: ' + self.configFile
         except AssertionError:
             return 'XML root element is not ' + self.rootElement
@@ -134 +159 @@
            @see: http://www.boddie.org.uk/python/XML_intro.html
         '''
-        out = open(self.settingsFile, 'w')
+        out = open(self.configFile, 'w')
         out.write(repr(self))
         out.close()
@@ -141 +166 @@
         #
         
-        return 'Saved settings to ' + self.settingsFile
+        return 'Saved settings to ' + self.configFile
 
     def _SetAttr(self, node, attribute, value):
@@ -227 +252 @@
 
 if __name__ == '__main__':
+    cf = Epics2Xml("config.xml")
+    cf.ReadConfigFile()
 #    rc = Settings("examples/test-settings.xml")
 #    rc.ReadXmlFile()