Changes between Version 6 and Version 7 of MPFramworkGSocWk

Timestamp:

Jul 13, 2008, 9:48:41 PM (16 years ago)

Author:

armahg@…

Comment:

--

MPFramworkGSocWk

@@ -61 +61 @@
 
 
+= Weeks 6 & 7 =
+So things took a somewhat different (and I think positive) turn these past
+two weeks. I added some more routines for port activation, deactivation
+and uninstallation to MPMacPorts class.
 
 
+In addition Randall suggested the following method to be used for
+evaluating strings as tcl commands instead of the original NSArray parsing
+we were doing. This meant that code that originally looked like:
+
+{{{
+-(NSURL *)pathToPortIndex:(NSString *)source {
+   return [NSURL fileURLWithPath:
+                 [interpreter evaluateArrayAsString:
+                            [NSArray arrayWithObjects:
+                               @"return [macports::getindex",
+                               source,
+                               @"]",
+                               nil]]];
+}
+}}}
+
+to code that looked like:
+
+{{{
+-(NSURL *)pathToPortIndex:(NSString *)source {
+  return [NSURL fileURLWithPath:
+           [interpreter evaluateStringAsString:
+        [NSString stringWithFormat:@"return [macports::getindex %@ ]", source]]];
+}
+
+}}}
+
+This definitely made for much more cleaner code. In fact it led to my writing a
+generic function for evaluating a given Tcl command with an array of arguments.
+Each element in this array can be either an NSString or NSArray for flexilbility.
+Also, there's no limit to the size of the argument array. The method looks
+like:
+
+{{{
+- (void)execPortProc:(NSString *)procedure withParams:(NSArray *)params {
+        //params can contain either NSStrings or NSArrays
+        NSString * sparams = [NSString stringWithString:@" "];
+        NSEnumerator * penums = [params objectEnumerator];
+        MPInterpreter *interpreter = [MPInterpreter sharedInterpreter];
+        
+        id elem;
+        
+        while (elem = [penums nextObject]) {
+                if ([elem isMemberOfClass:[NSString class]]) {
+                        sparams = [sparams stringByAppendingString:elem];
+                        sparams = [sparams stringByAppendingString:@" "];
+                }
+                
+                else if ([elem isKindOfClass:[NSArray class]]) {
+                        //Maybe I should be more careful in the above if statement and
+                        //explicitly check for the classes i'm interested in?
+                        sparams = [sparams stringByAppendingString:[elem componentsJoinedByString:@" "]];
+                        sparams = [sparams stringByAppendingString:@" "];
+                }
+        }
+        
+        [interpreter evaluateStringAsString:
+         [NSString stringWithFormat:@"[%@ %@]" , procedure, sparams]];
+}
+}}}
+thanks Randall.
+
+Second thing worth mentioning I think I have found a solution to Notifications
+in the framework. I won't give too many details but basically it involves
+having a "bridge" singleton instance class between the Tcl API and Framework.
+When a ui_$priority procedure is calls, it in turn calls a notifications procedure
+which calls a method (and this can be any method) of the "bridge"
+class. This method can be a notification, message to a Framework class, delegate
+triggering method ... the important thing is the Framework is notified of the
+change without having to do a system-wide broadcast (e.g. NSDistributedNotification
+center notification). More details after this has been refined. The 
+current code for it has been checked into svn.
+
+Finally, I'll be releasing a MidTerm Evaluation version of the Framework today.
+IT HAS NOT BEEN TESTED. The main purpose is for feedback on the current
+functionality as is being advertised by the Docmentation. The main things it
+is currently lacking are incorporation of Authorization, finished Notifications
+and thorough Testing. Any and all feedback is welcome.
+The .dmg and .zip files can be downloaded from svn by doing
+
+svn co http://svn.macosforge.org/repository/macports/users/armahg/MacPorts_Framework/MPFMidtermRelease.dmg for the dmg
+
+svn co http://svn.macosforge.org/repository/macports/users/armahg/MacPorts_Framework/MPFMidtermRelease.zip for the .zip file
+
+and svn co http://svn.macosforge.org/repository/macports/users/armahg/MacPorts_Framework/MPFMidtermRelease/ for the whole folder