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# Copyright (c) 2017 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Johnny C. Lam.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
# ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
# TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
# BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#
# NAME
# makedir.subr -- make a directory hierarchy
#
# SYNOPSIS
# task_makedir [-m mode] <directory> ...
#
# DESCRIPTION
# The task_makedir function creates the directories in the order
# specified. If the intermediate directories do not exist, then they
# are created as well.
#
# The options are as follows:
#
# -i Always create intermediate directories as separate steps.
# If this option is not given, then by default, the function
# will attempt to use "mkdir -p" to create the intermediate
# directories.
#
# -m Set the permissions of the final created directory to
# the specified mode.
#
# RETURN VALUES
# Returns 0 on success, and >0 if an error occurs.
#
# ENVIRONMENT
# The following variables are used if they are set:
#
# CHMOD The name or path to the chmod(1) utility.
#
# MKDIR The name or path to the mkdir(1) utility.
#
__task_makedir__="yes"
task_makedir()
{
: ${CHMOD:=chmod}
: ${MKDIR:=mkdir}
local execute="yes"
local intermediate=
local mode=
local opts="-p" # always create intermediate directories
local arg
local OPTIND=1
while getopts ":im:n" arg "$@"; do
case $arg in
i) intermediate="yes" ;;
m) mode=${OPTARG}
opts="$opts -m $mode" ;;
n) execute= ;;
*) return 127 ;;
esac
done
shift $(( ${OPTIND} - 1 ))
# Attempt to do "mkdir -p" if "-i" was not given.
if [ -z "$intermediate" ]; then
case $execute in
"") : "fall through" ;;
*) { ${MKDIR} ${opts# } "$@"; } 2>/dev/null
[ $? -gt 0 ] || return 0 ;;
esac
fi
local path=
local prev="/" # seed with / to prevent attempting "mkdir /"
local save_IFS
local dir component
for dir; do
[ -n "$dir" ] || return 1
save_IFS=$IFS; IFS=/
set -o noglob; set -- $dir; set +o noglob
IFS=$save_IFS
while [ $# -gt 0 ]; do
component=$1; shift
case $component in
"") case $path in
"") path="/" ;;
*) : "path unchanged" ;;
esac ;;
*) case $path in
"") path="$component" ;;
*/) path="$path$component" ;;
*) path="$path/$component" ;;
esac ;;
esac
if [ "$path" != "$prev" ]; then
case $execute in
"") echo "${MKDIR} \"$path\"" ;;
*) if [ ! -d "$path" ]; then
${MKDIR} "$path" 2>/dev/null
[ -d "$path" ] || return 1
fi
esac
prev=$path
fi
done
if [ -n "$mode" ]; then
case $execute in
"") echo "${CHMOD} \"$mode\" \"$dir\"" ;;
*) ${CHMOD} "$mode" "$dir" || return 1 ;;
esac
fi
done
}
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