#!/bin/sh
#
# install-man -- install or uninstall compressed or uncompressed man pages.
#
# This horrible shell script handles install and deleting of man pages.
# it tries to be reasonably smart about the placement of the pages,
# looking a the extension of the man page for clues (e.g. it would put
# "shit.3" in section 3. Just by adding the -u flag, the man pages may
# be removed.
#
# Author: Scott C. Gray   (except where noted)
# Created: 1995-02-03
#
src_dir=.                              # default search path for man pages
dst_dir=/usr/local/man                 # default destination
man_type=man                           # default type, could be "cat"
man_default_ext=1                      # default manual section
compressed=0                           # default to no compression
uninstall=0                            # default to no uninstall

set -- `getopt cun:d:t:s: $*`

has_error=0

while ( test $# -ne 0 -a "$1" != "--" ); do
	case $1 in
		-t)
			shift
			if (test "$1" != "cat" -a "$1" != "man"); then
				echo "install.man: -t: Invalid man type"
				has_error=1
			else
				man_type=$1
			fi
			;;
		-s)
			shift
			src_dir=$1
			if (test ! -d "${src_dir}"); then
				echo "install.man: Can't find source directory ${src_dir}"
				exit 1
			fi
			;;
		-d)
			shift
			dst_dir=$1
			;;
		-c)
			compressed=1
			;;
		-u)
			uninstall=1
			;;
		-n)
			default_man_ext=$1
			;;
		*)
			has_error=1
			;;
	esac
	shift
done

shift       # get rid of the -- in the options line

if (test ${has_error} -eq 1 -o $# -eq 0); then
	echo "use: install.man [-t type] [-s src_dir] [-d dst_dir] [-n section] "
	echo "                 [-c] [-u] man_page ..."
	echo "      -t type     either \"cat\" or \"man\" (default \"man\")"
	echo "      -s src_dir  where to find man pages (default .)"
	echo "      -d dst_dir  where to place man pages (default /usr/local/man)"
	echo "      -n section  change default man section (default 1)"
	echo "      -c          compress man pages, place in man?.Z or cat?.Z"
	echo "      -u          uninstall the man pages"
	exit 1
fi

		
has_error=0
while (test $# -gt 0); do

	if (test ${uninstall} = 0 -a ! -r ${src_dir}/$1); then
		echo "install.man: No such man page ${src_dir}/$1"
		exit 1
	fi

	man_page=`echo $1 | sed -e 's/\.[^\.]*$//g'`
	man_ext=`echo $1 | sed -e 's/.*\.//g' | grep '^[0-9n]$'`

	if (test "${man_ext}" = ""); then
		man_ext=${man_default_ext}
	fi

	#
	# The exact location of this particular man page
	#
	man_path=${dst_dir}/${man_type}${man_ext}

	if (test ${compressed} = 1); then
		man_path=${man_path}.Z
	fi

	#
	# This section of code attempts to create the destination directory
	# if it doesn't work.  Note, the sed line was stolen almost entirely
	# from mkinstalldirs that comes with GNU autoconf (by Noah Friedman 
	# <friedman@prep.ai.mit.edu>).
	#
	if (test ${uninstall} = 0 -a ! -d ${man_path}); then
		dir=""
		for i in `echo ":${man_path}" | \
		          sed -ne 's/^:\//#/;s/^://;s/\// /g;s/^#/\//;p'`
		do
			if (test "${dir}" = ""); then
				dir=$i
			else
				dir=${dir}/$i
			fi
			if (test ! -d ${dir}); then
				output=`mkdir ${dir} 2>&1`
				if (test "${output}" != ""); then
					echo "install.man: ${output}"
					exit 1
				fi
			fi
		done
	fi

	if (test ${uninstall} -eq 1); then
		echo "Uninstalling $1 from ${man_path}"
		rm -f ${man_path}/${man_page}.${man_ext}
	else
		if (test ${compressed} -eq 1); then
			echo "Installing $1 as ${man_path}/${man_page}.${man_ext}"
			compress -c ${src_dir}/$1 > ${man_path}/${man_page}.${man_ext}
		else
			echo "Installing $1 as ${man_path}/${man_page}.${man_ext}"
			cp ${src_dir}/$1 ${man_path}/${man_page}.${man_ext}
		fi
	fi

	shift
done

exit 0