##
##  mkdir -- Make one or more directories
##  Copyright (c) 1996-2008 Ralf S. Engelschall <rse@engelschall.com>
##
##  This file is part of shtool and free software; you can redistribute
##  it and/or modify it under the terms of the GNU General Public
##  License as published by the Free Software Foundation; either version
##  2 of the License, or (at your option) any later version.
##
##  This file is distributed in the hope that it will be useful,
##  but WITHOUT ANY WARRANTY; without even the implied warranty of
##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
##  General Public License for more details.
##
##  You should have received a copy of the GNU General Public License
##  along with this program; if not, write to the Free Software
##  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
##  USA, or contact Ralf S. Engelschall <rse@engelschall.com>.
##

str_tool="mkdir"
str_usage="[-t|--trace] [-f|--force] [-p|--parents] [-m|--mode <mode>] [-o|--owner <owner>] [-g|--group <group>] <dir> [<dir> ...]"
arg_spec="1+"
opt_spec="t.f.p.m:o:g:"
opt_alias="t:trace,f:force,p:parents,m:mode,o:owner,g:group"
opt_t=no
opt_f=no
opt_p=no
opt_m=""
opt_o=""
opt_g=""

. ./sh.common

errstatus=0
for p in ${1+"$@"}; do
    #   if the directory already exists...
    if [ -d "$p" ]; then
        if [ ".$opt_f" = .no ] && [ ".$opt_p" = .no ]; then
            echo "$msgprefix:Error: directory already exists: $p" 1>&2
            errstatus=1
            break
        else
            continue
        fi
    fi
    #   if the directory has to be created...
    if [ ".$opt_p" = .no ]; then
        if [ ".$opt_t" = .yes ]; then
            echo "mkdir $p" 1>&2
        fi
        mkdir $p || errstatus=$?
        if [ ".$opt_o" != . ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "chown $opt_o $p" 1>&2
            fi
            chown $opt_o $p || errstatus=$?
        fi
        if [ ".$opt_g" != . ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "chgrp $opt_g $p" 1>&2
            fi
            chgrp $opt_g $p || errstatus=$?
        fi
        if [ ".$opt_m" != . ]; then
            if [ ".$opt_t" = .yes ]; then
                echo "chmod $opt_m $p" 1>&2
            fi
            chmod $opt_m $p || errstatus=$?
        fi
    else
        #   the smart situation
        set fnord `echo ":$p" |\
                   sed -e 's/^:\//%/' \
                       -e 's/^://' \
                       -e 's/\// /g' \
                       -e 's/^%/\//'`
        shift
        pathcomp=''
        for d in ${1+"$@"}; do
            pathcomp="$pathcomp$d"
            case "$pathcomp" in
                -* ) pathcomp="./$pathcomp" ;;
            esac
            if [ ! -d "$pathcomp" ]; then
                if [ ".$opt_t" = .yes ]; then
                    echo "mkdir $pathcomp" 1>&2
                fi
                mkdir $pathcomp || errstatus=$?
                if [ ".$opt_o" != . ]; then
                    if [ ".$opt_t" = .yes ]; then
                        echo "chown $opt_o $pathcomp" 1>&2
                    fi
                    chown $opt_o $pathcomp || errstatus=$?
                fi
                if [ ".$opt_g" != . ]; then
                    if [ ".$opt_t" = .yes ]; then
                        echo "chgrp $opt_g $pathcomp" 1>&2
                    fi
                    chgrp $opt_g $pathcomp || errstatus=$?
                fi
                if [ ".$opt_m" != . ]; then
                    if [ ".$opt_t" = .yes ]; then
                        echo "chmod $opt_m $pathcomp" 1>&2
                    fi
                    chmod $opt_m $pathcomp || errstatus=$?
                fi
            fi
            pathcomp="$pathcomp/"
        done
    fi
done

shtool_exit $errstatus

##
##  manual page
##

=pod

=head1 NAME

B<shtool mkdir> - B<GNU shtool> mkdir(1) style command

=head1 SYNOPSIS

B<shtool mkdir>
[B<-t>|B<--trace>]
[B<-f>|B<--force>]
[B<-p>|B<--parents>]
[B<-m>|B<--mode> I<mode>]
[B<-o>|B<--owner> I<owner>]
[B<-g>|B<--group> I<group>]
I<dir> [I<dir> ...]

=head1 DESCRIPTION

This is a mkdir(1) style command with additional options and the ability
to be smart if the directory already exists which is important for
installation procedures.

=head1 OPTIONS

The following command line options are available.

=over 4

=item B<-t>, B<--trace>

Shows the actually involved shell commands.

=item B<-f>, B<--force>

Forced continuation and no complaints if directory already exists.
Default is to terminate with error.

=item B<-p>, B<--parents>

Automatic parent directory creation. Default is to only create the last
directory in the path and fail if parents are missing.

=item B<-m>, B<--mode> I<mode>

The directory mode applied to the directory, see chmod(1). Omitting mode
skips this step and leaves the operating system default which is usually
based on umask(1). Some directory modes require superuser privileges to
be set. Default is to stick with operating system defaults.

=item B<-o>, B<--owner> I<owner>

The directory owner name or id applied to the directory, see chown(1).
This option requires superuser privileges to execute. Default is to skip
this step and leave the operating system default which is usually based
on the executing uid or the parent setuid directory.

=item B<-g>, B<--group> I<group>

The directory group name or id applied to the directory, see chgrp(1). This
option requires superuser privileges to execute to the fullest extend,
otherwise the choice of I<group> is limited on most operating systems.
Default is to skip this step and leave the operating system default
which is usually based on the executing gid or the parent setgid
directory.

=head1 EXAMPLE

 #   Makefile
 install:
     shtool mkdir -f -p -m 755 $(bindir)
     shtool mkdir -f -p -m 755 $(mandir)/man1
      :

=head1 HISTORY

The B<GNU shtool> B<mkdir> command was originally written for Public
Domain by Noah Friedman and later revised by Ralf S. Engelschall
E<lt>rse@engelschall.comE<gt> in 1999 for inclusion into B<GNU shtool>.

=head1 SEE ALSO

shtool(1), mkdir(1).

=cut