#!/bin/sh -e

# to test POSIX-correctness, change hash-bang to /bin/bash and uncomment
# the following line:

# set -o posix

# Very simple configuration script for t1lib.  Checks a couple of
# directories that might contain fonts, and if they exist, adds
# anything ending in .pfa or pfb to the font database.  A few things
# borrowed from paperconfig, (C) 1996, Yves Arrouye
# <arrouye@debian.org>

# note that this creates the "minimal" font database accepted by t1lib,
# and doesn't look in every possible place for fonts.  It is mostly
# provided so that xglyph will work out of the box...

# Written by David Huggins-Daines <dhd@debian.org>

usage() {
    if [ "$1" = -h ]
    then
	exec 1>&2
	echo -n U
    else
	echo -n u
    fi

    echo "sage: `basename $0` [ -v, --version ] [ -h, --help ] [ --force ]"
    echo "                   [ fontdirs... ]"

    if [ "$1" = -h ]
    then
	cat <<EOF

Options: -v, --verbose          print version information and exit
         -h, --help             print this help and exit
         --force                force configuration
EOF
	exit 0
    else
	exit 1
    fi
}

version=0.2
topfontdirs="/usr/share/fonts /usr/share/texmf/fonts /usr/share/fonts/X11"
for dir in $topfontdirs; do
   if [ -d $dir ]; then
       subdirs=$(find $dir -type d -printf "%p ")
       fontdirs="$subdirs $fontdirs"
   fi
done
conffile=/opt/alt/t1lib/usr/share/t1lib/t1lib.config
confdir=/opt/alt/t1lib/usr/share/t1lib/
dbase=/opt/alt/t1lib/usr/share/t1lib/FontDatabase
temp=/opt/alt/t1lib/usr/share/t1lib/FontDatabase.tmp

force=0

while [ $# -ne 0 ]
do
    case "$1" in
	-v|--version)
	    echo "`basename $0` version $version" \
		"by David Huggins-Daines <dhd@debian.org>"
	    exit 0
	    ;;
	-h|--help)
	    usage -h
	    ;;
	--force)
	    force=1
	    ;;
	*)
	    # hairy way to remove a trailing backslash (should use perl)
	    pat=`expr $1 : "\(.*\)\/\$" || echo $1`
	    # hairier way to find a string anywhere in another string
	    # should really use perl.
	    if ! grep $pat <<EOF >/dev/null 2>&1
$fontdirs
EOF
	    then
		fontdirs="$fontdirs $1"
	    fi
	    ;;
    esac
    shift
done

# We presume that if the database exists, then so does the
# configuration file.  Hopefully this won't break anything.

if [ $force -eq 1 ] || [ ! -e $dbase ]; then
    fontpath=""
    afmpath=""

    mkdir -p $confdir || true

    echo -n "Searching for Type 1 fonts and AFM files..."

    for i in $fontdirs
    do
	if [ -d $i ] && ls $i/*.pf[ab] > /dev/null 2>&1; then
	    if [ -n "$fontpath" ]; then
		fontpath="$fontpath:$i"
	    else
		fontpath="$i"
	    fi
	    
	    if ls $i/*.afm > /dev/null 2>&1; then
		if [ -n "$afmpath" ]; then
		    afmpath="$afmpath:$i"
		else
		    afmpath="$i"
		fi
	    fi
	    # get a listing of all the fonts in each dir
	    find $i -maxdepth 1 -name *.pf[ab] -printf '%f\n' >> $temp
	fi
    done
    if [ -z "$fontpath" ]; then
	cat <<EOF

No Type 1 fonts were found in the expected locations.
If you want t1lib to be aware of your fonts, you should run
/usr/sbin/t1libconfig with the names of your local font directories as
arguments, or you should edit the /opt/alt/t1lib/usr/share/t1lib/FontDatabase file manually.
See the FontDatabase(5) manual page for more information.

Press [return] to continue.
EOF
        read foo || true
	rm -f $temp
    else
        echo "done."
        echo -n "Building font database..."
        fontcount=`wc -l $temp || true`
        echo $fontcount > $dbase
        cat $temp >> $dbase
        rm -f $temp
        echo "done."
    fi

    # now set the paths in the config file
    cat <<EOF >$conffile
t1lib.config - global configuration file for t1lib.
It was created automatically on `date`
by the t1libconfig script.

Run /usr/sbin/t1libconfig --force to rebuild it.
    
ENCODING=.
AFM=$afmpath
TYPE1=$fontpath
FONTDATABASE=$dbase
EOF
else
    echo "Configuration and font database files already exist."
    echo "Run /usr/sbin/t1libconfig --force to rebuild them."
fi

exit 0