independ roll(1)

src/roll.c

@@ -1,75 +0,0 @@
-#include <ctype.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <sysexits.h>
-#include <time.h>
-#include "libio.h"
-
-static char *program_name = "roll";
-
-int main(int argc, char *argv[]){
-	char *argv0;
-	char *argvc;
-	int r; /* rolls */
-	int s; /* sides */
-
-	argv0 = argv[0];
-
-	if(argc < 2){
-		fprintf(stderr,
-			"Usage: %s [dice...]\n"
-			"\tDice should be formatted [rolls]d[sides], e.g. 1d3, 5d6...\n",
-			argv0 == NULL ? program_name : argv0
-		);
-		return EX_USAGE;
-	}
-
-	srand(time(NULL));
-
-	while(--argc > 0){
-		argvc = *++argv;
-
-		/* Parse out [rolls]d[sides] */
-		if(!isdigit(**argv)){
-error:			fprintf(stderr,
-				"%s: %s: Improperly formatted die (should be"
-				" [rolls]d[sides]).\n",
-				argv0, argvc
-			);
-			return EX_USAGE;
-		}
-		r = parse_uint(*argv);
-		while(isdigit(**argv))
-			++*argv;
-		if(*((*argv)++) != 'd' || !isdigit(**argv))
-			goto error;
-		s = parse_uint(*argv);
-		while(isdigit(**argv))
-			++*argv;
-		if(**argv != '\0')
-			goto error;
-
-		/* On 2022-08-19 I experimented with using fprintf(3) instead
-		 * of libio's fdputd(3) to see if stdio was faster, thinking
-		 * the buffering would make a difference. stdio flushes its
-		 * buffer after every newline so in this particular code it
-		 * cannot improve performance unless fdputd(3)'s implementation
-		 * really sucked - no beans!
-		 * It also is an issue where every benchmark reports 0.00 real
-		 * / user / sys times for execution because this program does
-		 * very little - but if you fire up strace(3) you will find the
-		 * system calls (which are nowadays usually the slowest part of
-		 * a given small UNIX utility) are the same either way.
-		 * I'm keeping this little option here in case someone wants to
-		 * peer review; no harm in it. */
-		while(--r >= 0)
-#ifdef USE_STDIO
-			fprintf(stdout, "%d\n",
-#else
-			fdputd(1,
-#endif
-				rand() % s + 1);
-	}
-
-	return EX_OK;
-}