independ roll(1)

.gitignore

@@ -9,7 +9,6 @@ bin/retval
 bin/rldecode
 bin/rlencode
 bin/roll
-bin/roll_stdio
 bin/rot13
 bin/simexec
 bin/sleep
@@ -19,5 +18,6 @@ bin/sysexits
 build/*
 include/sysexits.h
 lib/*.o
+roll/roll
 rot13/rot13
 src/*.o

Makefile

@@ -37,7 +37,6 @@ cleanprograms:
 	$(RM) bin/rldecode
 	$(RM) bin/rlencode
 	$(RM) bin/roll
-	$(RM) bin/roll_stdio
 	$(RM) bin/tail
 	$(RM) bin/true
 
@@ -106,17 +105,11 @@ retval.o: libio src/retval.c sysexits
 retval: libio retval.o
 	$(CC) $(CFLAGS) -o bin/retval build/retval.o build/libio.o
 
-roll.o: lib/libio.h src/roll.c sysexits
-	$(CC) $(CFLAGS) -c -o build/roll.o src/roll.c
+roll: roll/roll
+	mv roll/roll bin/roll
 
-roll: libio roll.o
-	$(CC) $(CFLAGS) -o bin/roll build/libio.o build/roll.o
-
-roll_stdio.o: lib/libio.h src/roll.c sysexits
-	$(CC) $(CFLAGS) -c -DUSE_STDIO -o build/roll_stdio.o src/roll.c
-
-roll_stdio: libio roll_stdio.o
-	$(CC) $(CFLAGS) -o bin/roll_stdio build/libio.o build/roll_stdio.o
+roll/roll: sysexits roll/roll.c roll/Makefile
+	$(MAKE) -C roll sane
 
 rot13: rot13/rot13
 	mv rot13/rot13 bin/rot13

roll/Makefile

@@ -0,0 +1,27 @@
+all: roll
+
+clean:
+	rm -rf ../dist/roll ../dist/roll.tar ../dist/roll.tar.gz roll
+
+dist: ../dist/roll.tar.gz
+
+sane: roll.c ../include/sysexits.h
+	$(CC) -DDONT_USE_SYSTEM_SYSEXITS -o roll roll.c
+
+roll: roll.c
+	$(CC) -o roll roll.c
+
+../dist/roll: roll
+	mkdir -p ../dist/roll.tmp/bin/
+	cp roll ../dist/roll.tmp/bin/roll
+	mv ../dist/roll.tmp ../dist/roll
+
+../dist/roll.tar: ../dist/roll
+	cd ../dist/roll && pax -w -x ustar . >../roll.tar.tmp
+	mv ../dist/roll.tar.tmp ../dist/roll.tar
+
+../dist/roll.tar.gz: ../dist/roll.tar
+	gzip -c <../dist/roll.tar >../dist/roll.tar.gz.tmp
+	mv ../dist/roll.tar.gz.tmp ../dist/roll.tar.gz
+
+.PHONY: all clean sane

roll/roll.c

@@ -0,0 +1,79 @@
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+#ifndef DONT_USE_SYSTEM_SYSEXITS
+#	include <sysexits.h>
+#else
+#	include "../include/sysexits.h"
+#endif /* ifndef DONT_USE_SYSTEM_SYSEXITS */
+
+#include <time.h>
+
+static char *program_name = "roll";
+
+/* change these to watch the world burn */
+#define ROLLS_BASE 10
+#define SIDES_BASE 10
+
+int main(int argc, char *argv[]){
+	char *argv0;
+	char *argvc;
+	char *ep;
+	extern int errno;
+	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;
+		}
+
+		errno = 0;
+		r = strtol(*argv, &ep, ROLLS_BASE);
+
+		if(errno != 0){
+range:			fprintf(stderr,
+				"%s: %s: Number out of working range for this"
+				" program.\n",
+				argv0, argvc
+			);
+			return EX_SOFTWARE;
+		}
+
+		if(*(*argv = ep) != 'd' || !isdigit(*(++*argv)))
+			goto error;
+
+		s = strtol(*argv, &ep, SIDES_BASE);
+		if(errno != 0)
+			goto range;
+		if(*ep != '\0')
+			goto error;
+
+		while(--r >= 0)
+			fprintf(stdout, "%d\n", rand() % s + 1);
+	}
+
+	return EX_OK;
+}

rot13/Makefile

@@ -7,6 +7,7 @@ dist: ../dist/rot13.tar.gz
 
 sane: rot13.c ../include/sysexits.h
 	$(CC) -DDONT_USE_SYSTEM_SYSEXITS -o rot13 rot13.c
+
 rot13: rot13.c
 	$(CC) -o rot13 rot13.c
 

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;
-}