Add mandoc-manpage for mkdir(1) and clean up code

and mark it as finished in the README.

README

@@ -42,7 +42,7 @@ The following tools are implemented ('*' == finished, '#' == UTF-8 support,
 =* logname         yes                             none
 =  ls              no                              -C, -R, -q, -u
    md5sum          non-posix                       none
-=  mkdir           yes                             none
+=* mkdir           yes                             none
 =  mkfifo          yes                             none
 =  mktemp          non-posix                       none
 =  mv              yes                             (-i)

mkdir.1

@@ -1,19 +1,35 @@
-.TH MKDIR 1 sbase\-VERSION
-.SH NAME
-mkdir \- make directory
-.SH SYNOPSIS
-.B mkdir
-.RB [ \-pm ]
-.RI [ name ...]
-.SH DESCRIPTION
-.B mkdir
-creates the specified directories.
-.SH OPTIONS
-.TP
-.B \-p
-creates any necessary parent directories, and does not fail if the target
+.Dd January 26, 2015
+.Dt MKDIR 1 sbase\-VERSION
+.Sh NAME
+.Nm mkdir
+.Nd create directories
+.Sh SYNOPSIS
+.Nm mkdir
+.Op Fl p
+.Op Fl m Ar mode
+.Ar name ...
+.Sh DESCRIPTION
+.Nm
+creates a directory for each
+.Ar name
+if it does not already exist.
+.Sh OPTIONS
+.Bl -tag -width Ds
+.It Fl m
+Set the file
+.Ar mode
+of newly created directories.
+.It Fl p
+Also create necessary parent directories and
+do not fail if
+.Ar name
 already exists.
-.B \-m
-set the file permission bits of the newly created directory.
-.SH SEE ALSO
-.IR mkdir (2)
+.El
+.Sh SEE ALSO
+.Xr mkdir 2
+.Sh STANDARDS
+The
+.Nm
+utility is compliant with the
+.St -p1003.1-2008
+specification.

mkdir.c

@@ -8,7 +8,20 @@
 
 #include "util.h"
 
-static void mkdirp(char *);
+static void
+mkdirp(char *path)
+{
+	char *p = path;
+
+	do {
+		if (*p && (p = strchr(&p[1], '/')))
+			*p = '\0';
+		if (mkdir(path, S_IRWXU|S_IRWXG|S_IRWXO) < 0 && errno != EEXIST)
+			eprintf("mkdir %s:", path);
+		if (p)
+			*p = '/';
+	} while (p);
+}
 
 static void
 usage(void)
@@ -51,18 +64,3 @@ main(int argc, char *argv[])
 
 	return 0;
 }
-
-static void
-mkdirp(char *path)
-{
-	char *p = path;
-
-	do {
-		if (*p && (p = strchr(&p[1], '/')))
-			*p = '\0';
-		if (mkdir(path, S_IRWXU|S_IRWXG|S_IRWXO) < 0 && errno != EEXIST)
-			eprintf("mkdir %s:", path);
-		if (p)
-			*p = '/';
-	} while (p);
-}