Video: C Programming on System 6 - A Cooperative Threading Implementation
I'm starting on a new project and I needed a cooperative threading mechanism which didn't exist in System 6, so I created one.
Video: C Programming on System 6 - Amend Revision Control System
It's been almost a year since my last
confessional video.
A few weeks ago I started working on a small revision control system to handle
my C projects developed on my Mac and it's now at the point where I can at least
manage commits to the tool itself.
Video: C Programming on System 6 - SOCKS5 Support
Returning to the development of my IMAP client, I add SOCKS5 support to be able to connect through a network proxy, particularly the one I made that is able to convert TLS-encrypted data from my real mailserver into plaintext that the Mac's slow CPU can support.
Video: C Programming on System 6 - Adding a GUI to diff(1)
In the
previous episode
I quickly ported OpenBSD's diff(1) but there wasn't any interface to select
files or scroll through the output.
I've since added a proper GUI with the ability to select files or folders, and
in this episode I walk through the GUI and filesystem code and then add a
proper Edit menu.
I also make a formal release of the code and binary available for download.
Video: C Programming on System 6 - Porting OpenBSD's diff(1)
I've wanted a simple revision control system on my Mac since starting
development of my IMAP client.
Porting a large system like Git or even CVS would be overkill (and very slow),
but maybe something small like OpenBSD's
RCS
implementation would suffice.
For now, just having a diff utility would be helpful so in this video I port
the guts of
OpenBSD's diff(1)
and show it generating a unified diff between revisions of a C file.
Video: C Programming on System 6 - Message Flags
In this episode, I fetch the flags of each message and for unseen messages, make them appear in the list in bold. That introduces an off-by-one which I run out of time to fix while recording.
Video: C Programming on System 6 - Viewing Messages
Today, I implement plaintext message viewing and hook it up to the message list.
I also review a cleanup of int variables to make them either short or long
throughout the project.
Video: C Programming on System 6 - Parsing RFC822 Dates
I wrote a utility function to parse RFC822 dates/times sent by the IMAP server, which then converts them to a UTC time. In this video, I hook it into the IMAP parser and add a resource string for the local timezone offset setting, so these UTC times can then be converted to a local time and displayed in the message list.
Video: C Programming on System 6 - Easier LDEFs With This One Weird Trick
I recently read about using a jump instruction as an LDEF resource to allow
keeping the list definition function in the main program executable/project, so
in this video I implement the technique for the message list.
Video: C Programming on System 6 - Message List Fixes
In this video, I get the list of messages displaying again and fix a bug that
occurred when closing a mailbox.
I provide a quick summary of creating LDEF procedures in THINK C for drawing
custom list cells, which I will expand upon on in a future video.
Video: C Programming on System 6 - IMAP Protocol Parser Fixes
In this episode, I fix the off-by-one error in the IMAP envelope parser noted
in the previous episode, then improve the tracking of a malloced buffer that
gets shifted around during parsing.
Video: C Programming on System 6 - Debugging a Crash
Returning to the development of my IMAP client, in this video I add
functionality to fetch the default mailbox name from the resource file (later to
be moved to a preferences window) and then eventually locate a crash in the IMAP
protocol parser from a bogus memmove.
Video: C Programming on System 6 - Demo Application
In this video, I create a new GUI application from scratch, create a resource file and add an image to it, and then display that image in a window. I also cover using THINK C's debugger to inspect a struct. Then, my Mac dies.
Video: C Programming on System 6 - Intro
I've been writing an IMAP client for and on my Mac 512Ke over the past many weeks. Taking inspiration from Andreas Kling's excellent YouTube videos documenting his development of the Serenity operating system, I thought I'd start screencasting some of my work.
This video is the first of hopefully many and presents a quick introduction to System 6, HFS resource forks, THINK C 5.0, and a look at some of the progress of my IMAP client so far.
PPP Over a WiFi232 (PPP Over TCP)
Now that my Mac 512Ke is able to use PPP for native TCP/IP, I wanted an easy way to do PPP between it and an OpenBSD server on my network. I initially did this with a physical serial cable, but was later able to do it over TCP so I could retain the use of my WiFi232.