The original IOCCC source code rule size checking tool.
usage: iocccsize [-ihV][-v level] prog.c
iocccsize [-ihV][-v level] < prog.c
-i ignored for backward compatibility
-h print usage message in stderr and exit
-v level turn on some debugging to stderr
-V print version and exit
The IOCCC net count rule 2b is written to stdout; with -v1, net count (2b),
gross count (2a), number of keywords counted as 1 byte. With -v2 or -v3
write source to stdout and tool diagnostics to stderr.
Exit Codes
0 source code passes rules 2a and 2b.
1 source code fails rule 2a and/or 2b.
2 usage -h
3 version -V
4 command line argument error
5+ some other internal error
Following my IOCCC 1991 Best Utility win I needed something to help with applying the IOCCC Rule 2 Size Limit during the development of my 1992 and 1993 submissions (combined with some sed(1) transformations). The tool kept being refined over the years as I kepted submitted entries to the IOCCC.
Sometime around 2012 or 2013 I was in contact with one of the IOCCC judges, Landon Court Noll, proposing Rule 2 Size Limit changes and mentioned I had this tool I used to help prepare my entries. Landon perked up to the idea of including the tool as part of the contest to help contestants (and judges) apply the Rule 2 Size Limit. The iocccsize tool first appeared in IOCCC 2014.
The IOCCC has now moved to retool its submission process by integrating a version of this tool into mkiocccentry with changes made to turn the core into a library function rule_count().