libApp
#!/bin/sh
							#$Id$
							#Copyright (c) 2014-2021 Pierre Pronchery <khorben@defora.org>
							#
							#Redistribution and use in source and binary forms, with or without
							#modification, are permitted provided that the following conditions are met:
							#
							# * Redistributions of source code must retain the above copyright notice, this
							#   list of conditions and the following disclaimer.
							# * 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 COPYRIGHT HOLDERS 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 COPYRIGHT HOLDER 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.
							#variables
							CONFIGSH="${0%/shlint.sh}/../config.sh"
							PROGNAME="shlint.sh"
							PROJECTCONF="../project.conf"
							#executables
							DATE="date"
							DEBUG="_debug"
							ECHO="/bin/echo"
							FIND="find"
							MKDIR="mkdir -p"
							SHLINT="sh -n"
							SORT="sort -n"
							TR="tr"
							[ -f "$CONFIGSH" ] && . "$CONFIGSH"
							#functions
							#shlint
							_shlint()
							{
								res=0
								subdirs=
								$DATE
								while read line; do
									case "$line" in
										"["*)
											break
											;;
										"subdirs="*)
											subdirs=${line#subdirs=}
											subdirs=$(echo "$subdirs" | $TR ',' ' ')
											;;
									esac
								done < "$PROJECTCONF"
								if [ ! -n "$subdirs" ]; then
									_error "Could not locate directories to analyze"
									return $?
								fi
								for subdir in $subdirs; do
									[ -d "../$subdir" ] || continue
									while read filename; do
										[ -n "$filename" ] || continue
										echo
										$ECHO -n "$filename:"
										_shlint_file "$filename"
										if [ $? -eq 0 ]; then
											echo " OK"
											echo "$PROGNAME: $filename: OK" 1>&2
										else
											echo "FAIL"
											echo "$PROGNAME: $filename: FAIL" 1>&2
											res=2
										fi
									done << EOF
							$($FIND "../$subdir" -type f -a -iname '*.sh' | $SORT)
							EOF
								done
								return $res
							}
							_shlint_file()
							{
								$DEBUG $SHLINT "$filename" 2>&1				|| return 2
								#try to detect invalid use of return
								#XXX this test is not accurate (therefore a warning)
								warn=0
								while read line; do
									case "$line" in
										*return*)
											warn=1
											;;
										*)
											warn=0
											;;
									esac
								done < "$filename"
								if [ $warn -ne 0 ]; then
									_error "$filename: return instead of exit in the global scope"
								fi
								return 0
							}
							#debug
							_debug()
							{
								echo "$@" 1>&3
								"$@"
							}
							#error
							_error()
							{
								echo "$PROGNAME: $@" 1>&2
								return 2
							}
							#usage
							_usage()
							{
								echo "Usage: $PROGNAME [-c] target..." 1>&2
								return 1
							}
							#main
							clean=0
							while getopts "cO:P:" name; do
								case "$name" in
									c)
										clean=1
										;;
									O)
										export "${OPTARG%%=*}"="${OPTARG#*=}"
										;;
									P)
										#XXX ignored for compatibility
										;;
									?)
										_usage
										exit $?
										;;
								esac
							done
							shift $((OPTIND - 1))
							if [ $# -lt 1 ]; then
								_usage
								exit $?
							fi
							#clean
							[ $clean -ne 0 ] && exit 0
							exec 3>&1
							ret=0
							while [ $# -gt 0 ]; do
								target="$1"
								dirname="${target%/*}"
								shift
								if [ -n "$dirname" -a "$dirname" != "$target" ]; then
									$MKDIR -- "$dirname"				|| ret=$?
								fi
								_shlint > "$target"					|| ret=$?
							done
							exit $ret
							