shithub: mc

ref: c1ad3758cdccebead9fafd8bdecf6caa5071fe19
dir: /libregex/redump.myr/

use std
use bio
use regex

const main = {args
	var cmd, opts
	var fd

	opts = [
		.argdesc = "regex [inputs...]",
		.minargs = 1
	]
	cmd = std.optparse(args, &opts)
	match regex.dbgcompile(cmd.args[0])
	| `std.Fail m:	
		std.fatal("unable to compile regex: %s\n", regex.failmsg(m))
	| `std.Ok re:
		if cmd.args.len > 1
			runall(re, cmd.args)
		else
			fd = bio.mkfile(0, bio.Rd)
			dump(re, fd)
			bio.close(fd)
		;;
	;;
}

const runall = {re, files

	for f in files
		match bio.open(f, bio.Rd)
		| `std.Some fd:
			dump(re, fd)
			bio.close(fd)
		| `std.None:
			std.fatal("failed to open %s\n", f)
		;;
	;;
}

const dump = {re, fd 
	while true
		match bio.readln(fd)
		| `std.Some ln:
			regex.exec(re, ln)
			std.slfree(ln)
		| `std.None:
			break
		;;
	;;
}