add rm, thanks rob

LICENSE

@@ -3,6 +3,7 @@ MIT/X Consortium License
 © 2011 Connor Lane Smith <cls@lubutu.com>
 © 2011 Kamil Cholewiński <harry666t@gmail.com>
 © 2011 stateless <stateless@archlinux.us>
+© 2011 Rob Pilling <robpilling@gmail.com>
 
 Permission is hereby granted, free of charge, to any person obtaining a
 copy of this software and associated documentation files (the "Software"),

Makefile

@@ -1,6 +1,6 @@
 include config.mk
 
-SRC = basename.c cat.c date.c echo.c false.c grep.c pwd.c sleep.c tee.c touch.c true.c wc.c
+SRC = basename.c cat.c date.c echo.c false.c grep.c pwd.c rm.c sleep.c tee.c touch.c true.c wc.c
 OBJ = $(SRC:.c=.o) util.o
 BIN = $(SRC:.c=)
 MAN = $(SRC:.c=.1)

rm.1

@@ -0,0 +1,17 @@
+.TH RM 1 sbase\-VERSION
+.SH NAME
+rm \- remove files and directories
+.SH SYNOPSIS
+.B rm
+.RB [ \-fr ]
+.RI [ files ...]
+.SH DESCRIPTION
+.B rm
+removes the given files and directories.
+.SH OPTIONS
+.TP
+.B \-f
+ignored, for compatibility.
+.TP
+.B \-r
+remove directories recursively.

rm.c

@@ -0,0 +1,58 @@
+/* See LICENSE file for copyright and license details. */
+#include <dirent.h>
+#include <errno.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include "util.h"
+
+static void rm(const char *);
+
+static bool rflag = 0;
+
+int
+main(int argc, char *argv[])
+{
+	char c;
+
+	while((c = getopt(argc, argv, "fr")) != -1)
+		switch(c) {
+		case 'f':
+			break;
+		case 'r':
+			rflag = true;
+			break;
+		default:
+			exit(EXIT_FAILURE);
+		}
+	for(; optind < argc; optind++)
+		rm(argv[optind]);
+	return EXIT_SUCCESS;
+}
+
+void rm(const char *path)
+{
+	if(remove(path) == 0)
+		return;
+	if(errno == ENOTEMPTY && rflag) {
+		struct dirent *d;
+		DIR *dp;
+
+		if(!(dp = opendir(path)))
+			eprintf("opendir %s:", path);
+		if(chdir(path) != 0)
+			eprintf("chdir %s:", path);
+		while((d = readdir(dp)))
+			if(strcmp(d->d_name, ".") && strcmp(d->d_name, ".."))
+				rm(d->d_name);
+
+		closedir(dp);
+		if(chdir("..") != 0)
+			eprintf("chdir:");
+		if(remove(path) == 0)
+			return;
+	}
+	eprintf("remove %s:", path);
+}

touch.c

@@ -43,7 +43,7 @@ touch(const char *str)
 	struct stat st;
 	struct utimbuf ut;
 
-	if(stat(str, &st) < 0) {
+	if(stat(str, &st) != 0) {
 		if(errno != ENOENT)
 			eprintf("stat %s:", str);
 		if(cflag)
@@ -54,6 +54,6 @@ touch(const char *str)
 	}
 	ut.actime = st.st_atime;
 	ut.modtime = t;
-	if(utime(str, &ut) < 0)
+	if(utime(str, &ut) != 0)
 		eprintf("utime %s:", str);
 }