[Coco] Coco OS9 Source Control (question)

[Gene Heskett]

On Monday 16 June 2014 17:55:38 Bill Pierce via Coco did opine
And Gene did reply:
> I am currently working on a source control system for the OS9 source
> files in my projects. The idea is to basically copy backups of any
> "changed" sources each time I compile (automatically). This system
> will be built into my custom OS9 C compiler, but will also have a
> standalone GUI for creating/editing/retrieving source projects. The
> GUI will create the initial checksum record for the source files to be
> used for later comparisons. Then the files are also archived for the
> first time with the checksum as an extension.
> 
> So far, my plan is to use the "last modified" date as my checksum to
> check for changed files, since my compiler "touches" all files it
> compiles. Before compiling each file, the system will check the last
> modified date of the file and compare it to the current project
> checksum list which is generated when you set up the project in the
> GUI module. If the checksum is different (newer), the new file is then
> archived with the new checksum as an extension, the checksum list is
> updated, and then compiling resumes.
> 
> What I am wondering, is there a better solution than using the "last
> modified" date?. I had thought of using the file CRC, but text files
> in OS9 do not have a generated CRC so a CRC generating routine would
> have to be added. I know the "last modified" dateis not the most
> accurate method, but it's the best I have at the moment.
> 
> Any ideas on a better checksum? An easy way to get a CRC?
> 
> Thanks

(nitr)os9 has a syscall to do that.  Thats how I did the updates, if 
required, in vfy.  No sense in re-inventing that particular wheel. :)

> 
> Bill Pierce
> "Today is a good day... I woke up" - Ritchie Havens
> 
> 
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Cheers, Gene Heskett
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