Archive for the ‘seneca’ Category

Well, the big ball ‘O duct tape that is my hacks on symbolstore.py are complete for now – here is the patch. This project will be carried on in the next term at which point I hope to address some of the current issues, namely – manipulating the directory structure, cleaning up the python code and assembling a unified documentation page.

For now – you may test out the fruits of my labour by downloading this installer of Firefox 3.0b2pre which will install Minefield in your Program Files/Minefield directory (you have no choice for installation dir.) and then copying these symbols into the folder where your Visual Studio (or Windbg) is looking for debug symbols.

The last thing you have to do in order for this to work is to put a path to cvs.exe in your PATH – I personally pointed it to the mozilla-build/mysys/bin/cvs.exe but if you like you can download cvs.exe and put it wherever you want.

Now that you have all you need, open up your debugger (VS or Windbg), attach it to the Minefield process and go!

It will ask you about the cvs calls that gather up the source code, say “OK” or “Run” or whatever is positive. The file should download into the proper /mozilla/whatever structure – on my computer it goes into Program Files/Microsoft Visual Studio 8/Common7/IDE/mozilla/…

That will be a focus in the next round, is manipulating the cvs command so that the source files go to a c:/temp or something. The debugger will automatically want to look for the path that the source file originally came from (in this case, my c:/ff_clean/mozilla/…) – you will have to point your debugger to the correct file the first time and then after that it knows to look in the mozilla folder you selected.

It works for now like what it is; a ball of duct tape that allows you to get the right source code for where you are in the browser without having a build on your computer.

I look forward to feedback about how this works for you, if you use it and if you have any problems arise.

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Here are the goals for my 0.2 release

  • release build of ff with debugger-info enabled to create pdbs without being a full debug build
  • using lib xul – make an installer for people to download
  • take the symbols and index them and distribute the source
  • set up the symbol server but indexed so that someone can pull the source code
  • which involves running the cv2http.cmd on the indexed code

And the results:

How to set up the Source and Symbol Server

  1. add a path to my symbolServer http://avnerd.tv/symbols/2007110200 as per MDC docs in Tools->Debugging->Symbols

  2. check the option for turning on the source server in Tools->Debugging->General

  3. Download the installer from here Firefox Installer **(FYI you have to use my installer because it is the one that I indexed code and uploaded symbols for – if you do not use this installer you will not get the proper results)
  4. install the firefox you just downloaded (it will install as Minefield in Program Files\Minefield)
  5. make sure you run it with –no-remote and -profilemanager so you don’t mess up your normal Firefox experience
  6. once it’s running, go to Tools->attach to process… and attach VStudio to the firefox instance
  7. after it’s attached, you can go to Debug->break all and then poke around at the firefox functions code (You will get a warning about downloading code from an unknown source, click on “run” because you trust me)

This is what it might look like:

Contribution Opportunity

You need to be in the Windows platform and have a copy of Visual Studio to run the above instructions. If this applies to you, please take a minute to download the installer and follow the instructions as I’ve outlined them.

Please leave a comment answering the following questions:

  1. Did it work for you?
  2. Were the instructions clear?
  3. Any constructive feedback?

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Today’s class was a presentation with Mark Finkle from Mozilla Corp. These are my notes.

Started off in proprietary software
Has only been with Mozilla for a year
The joy of extensions
– Primary way to get involved is through add-ons (extensions)
– Plug-ins killed the web (according to some) and are kind of discouraged
– Any app that uses the mozilla platform can be enabled to use extensions
– There’s built in support in the UI, cross platform, platform APIs

Sometime people put their content in a .jar and then in the .xpi necessary for installation. Mark doesn’t not advocate for this method because it can make things more confusing to new developers than need be.

He suggests keeping things as simple as you possibly can. Don’t use jar files, multiple levels, keep manifests simple. Don’t mimic other extensions that are often written by more experienced programmers.

Ted (:luser) has created a xul editor that can generate the skeleton for you, and if you use this then you have everything you need – just add content.

Use the pages on the MDC about the boilerplate aspects of creating extensions.

Stressed the importance of using the id of the rid firefox element to add your customized elements. Otherwise they may show up as document.getElementByID but they will not in fact appear. They will be in the ether until you merge them properly with the id. Examples are vbox id=”appcontent” or statusbar id=”status-bar”. Not merging properly is 90% of what people get stuck on when working on the UI elements of their application and it’s often that they are not using the id properly, don’t have the proper id or a syntax error.

Best Slide: “Mozilla is like an Onion: It makes you cry, it smells, it has layers”

Mozilla’s Tech Layers (1. XUL/JS/CSS, 2. XBL, 3. XPCOM)

Talking about layers he tells us that the top layer (the UI) is the easiest to get involved with and make changes to, but it’s also the least documented and has no API. Whereas the XPCOM layer is clean and documented and has APIs so in some ways it’s great to work with because it’s designed to be extensible.

A demo follows about trying to dig into the code via DOM inspector.

Google searching hint – put MDC in the search criteria to help narrow the results.

Highlighting of the Code Snippets section in MDC which can really help point you in the right direction.

Thanks for coming and talking with us Mark. I look forward to working on extensions in the future.

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My Experience at Ontario Linux Fest 2007 – At the Toronto Congress Center.

Woke up at 6 am to get the dog walked and eat some breakfast before heading out to get Cesar. Thanks Cesar for being awake and ready to go!

We had to go up to Seneca first and grab the display material from Mary, who was also awake and on time. Perfect so far. Then we headed up to the airport vicinity where the google map had said the center was and I promptly got us a little lost. After checking at the gas station for direction, we were set straight and arrived on time to the conference center where we signed in, got a bag ‘o shwag and found our table.

Cesar at the boothLukas at the booth

Once we were set up, I went to the “Women in Open Source” talk that Angela Byron was giving at 9:30. This was an excellent presentation and I was really excited to meet her in person and to talk briefly about her Summer of Code experience. I have been stalking that site for 2 years now and was never sure if it was something I could do or if only elite hackers applied. Meeting a real person who has done it and can speak to how it worked for her was inspiring. She works with Lullabot and thus, Drupal. After her talk I went to a “Hands on Demo” of Joomla and got to see how the other half lives. Joomla is exciting to me and I look forward to having a little bit of time to test out setting up a simple site with it.

Cesar had dutifully staffed the booth for a couple of hours so I went and took over so he could wander around and go to OpenMoko after lunch. At one point though, we plastered all the tables in both session halls with FSOSS flyers so as to get maximum awareness.

Talking to people about FSOSS was great – a lot of folks already knew about it and were coming. I spent a little time talking with Dru Lavigne and learning about FreeBSD. I even got a few install disks so maybe I’ll be testing it out on a virtual machine soon. A few good networking opportunities presented themselves. I met the guy who does all the Linux on mainframes stuff for IBM and he gave me his card to contact him about IBM online learning.

In the afternoon I listened to the story of a LUG partnering up with the United Way up around Owen Sound and fixing up computers for families in need. I hear that we’re doing some similar stuff at Seneca, so I’m going to be looking into how I could help with that project. What I like about this kind of project is that it can be anonymous – so that people in need don’t have to feel like they are getting handouts. Also, this is a great opportunity to work on making Linux useable to people with ZERO technical skills. That’s something I think really needs to keep being improved if there is going to be wider adoption. It also interests me because I need to become more comfortable with installing and configuring Linux so I can be an evangelist.

All in all, a great time was had and I came away with lots of new knowledge and curiousity about Linux and the community surrounding it plus, some new friendships in the making. I could get used to this conference lifestyle.

As a parting note:
Cesar vs. the penguin
did that penguin just move?

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