Let's have a chat. Continuing feature development of my BBS software.

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I review some recent commits covering user authentication and telnet negotiation, then write some ANSI output code and a broken function for returning a number's ordinal suffix.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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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.

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