The earliest memory I have of ‘programming’ is in the early/mid 90s when my father brought home a computer from work. We could play games on it … so of course I took the spreadsheet program he used (LOTUS 123, did I date myself with that?) and tried to modify it to print out a helpful message for him. It … halfway worked? At least I could undo it so he could get back to work…

After that, I picked up programming for real in QBASIC (I still have a few of those programs lying around), got my own (junky) Linux desktop from my cousin, tried to learn VBasic (without a Windows machine), and eventually made it to high school… In college, I studied computer science and mathematics, mostly programming in Java/.NET, although with a bit of everything in the mix. A few of my oldest programming posts on this blog are from that time.

After that, on to grad school! Originally, I was going to study computational linguistics, but that fell through. Then programming languages (the school’s specialty). And finally I ended up studying censorship and computer security. That’s about where I am today!

But really, I still have a habit of doing a little bit of everything. Whatever seems interesting at the time!

Wombat IDE - Updated tree and image libraries

2012-02-18

Continuing the update to the Petite back-end, I’ve rewritten the matrix library and most of the image library (everything except for read-image, write-image, and draw-image). The current code is all in Scheme, although I don’t want to write the image loading/saving code in Scheme otherwise we’ll be back into the original situation with the C211 libraries. The APIs haven’t changed though, so the previous APIs are still valid:

Wombat IDE - Upload button and λ‎

2012-02-17

Two new features that should prove to be pretty useful:

Upload button
λ‎ character

Wombat IDE - Generated host IDs

2012-02-16

Just a small change, now a short (8 character) alpha-numeric string will be used whenever a user hosts a connection, rather than just having to enter the IP and port combination:

Wombat IDE - Pair programming

2012-02-15

As I mentioned once before, I’ve been meaning to add the ability to share screens between different users. I spent a few hours yesterday evening, trying to get everything working correctly in the new setup. So far, I have messages sent and received (encoded using a Public Domain Java Base64 library) between a host and one or more clients, all with an easy enough to use GUI built right into Wombat:

Wombat IDE - Threads are fun

2012-02-05

Threads can get all sorts of interesting sometimes. And fun to debug. Essentially, whenever the user would restart the Petite process (using the Stop button) a new output thread would be spawned. There wasn’t any problem with the output being duplicated or lost–I already had locking in place to prevent that–but what would happen is that the threads would interleave the output, scrambling output nicely.

Wombat IDE - Enhancements and forward thinking

2012-01-27

A few minor enhancements with the new Petite-based builds: Start case sensitive by default Added a library directory in preparation for the new C211 libraries Added code to prevent gensym printing (makes records more readable in general) Re-added the C211 tree library (except for draw-tree), it’s pure Scheme but the API has remained the same I still haven’t pushed an official build for the students to actually use, but we’re getting closer.

Wombat IDE - Bug fixes galore!

2012-01-22

Bug fixes:

Added the ability to cancel when saving on close
Fixed Stop with Petite
Fixed an issue where the cursor wouldn’t be at the end on up arrow
Updated the launcher to actually exit in all cases, including errors on startup
Fixed build process for Petite sub-directories
Altered the Launcher to download zip archives and unzip them rather than grabbing the executable directly
Set the executable bit on unpacking files from zip so that Petite actually works on Linux and OSX machines

Wombat IDE - Shutdown hook

2012-01-21

An interesting feature: Runtime.getRuntime().addShutdownHook(new Thread() { public void run() { NativeProcess.destroy(); } }); (NativeProcess is the Petite Process object.) Theoretically, this code will run whenever the Java Virtual Machine shuts down normally, so if it crashes there will still be problems (although it’s harder than you might think to get the JVM to crash unless you’re specifically trying to do so). I just thought that was neat and should avoid some of the problems that Odete was having with zombie processes.

Wombat IDE 2.x

2012-01-20

The new version of Wombat has been uploaded. Rather than the Java Webstart based 1.x version, the new version has a built in auto update system. All that you need is the launcher (you can get it here) and everything should go from there. You should automatically get at least version 2.20.3. From now on, the 1.x line (using Webstart and Kawa) will no longer be updated and all updates will be to the 2.

Wombat IDE - The first Petite versions

2012-01-19

I started the basic conversion to petite back on 13 January, but I finally managed to get everything working today. To start the conversion, the first thing that I did was split everything into three active projects:

ide - contains the GUI code and code to whatever Scheme system I use
launcher - contains the code to find the correct version of the IDE and launch it and also to update to the latest version(s) automatically
petite - contains the bindings to Petite and can actually act as a stand-alone command-line REPL