#!/bin/sh
#
# Copyright by The HDF Group.
# Copyright by the Board of Trustees of the University of Illinois.
# All rights reserved.
#
# This file is part of HDF5.  The full HDF5 copyright notice, including
# terms governing use, modification, and redistribution, is contained in
# the COPYING file, which can be found at the root of the source code
# distribution tree, or in https://support.hdfgroup.org/ftp/HDF5/releases.
# If you do not have access to either file, you may request a copy from
# help@hdfgroup.org.
#

# Try to locate the software as named in argument.
# This is a sequential search of all possible locations of the software.
# Usage: locate_sw <SW-Name>
# It prints a string showing the paths leading to the include, lib and bin
# directory of the software, separated by colons.  E.g., if the software is
# located in /usr/sdt/*, it prints
# /usr/sdt/include:/usr/sdt/lib:/usr/sdt/bin
# Any component that is not found will be returned as an empty string. E.g.,
# if somehow the header files of the software are not found, it prints
# :/usr/sdt/lib;/usr/sdt/bin

# Function definitions
USAGE()
{
    echo "Usage: locate_sw <SW-Name>"
    echo "    where <SW-Name> can be hdf4, hdf5, zlib"
    echo "    It prints the paths leading the header files (include),"
    echo "    library (lib), and tools (bin).   E.g.,"
    echo "    /usr/sdt/include:/usr/sdt/lib:/usr/sdt/bin"
    echo "    Any component that is not found will be returned as an empty string. E.g.,"
    echo "    if somehow the header files of the software are not found, it prints"
    echo "    :/usr/sdt/lib;/usr/sdt/bin"
    echo "Exit code: 0 if software located; otherwise non-zero"
}

# locate hdf4 software
locate_hdf4()
{
# this default is the best guess of locating hdf4 software
swpaths_defaults="/usr/ncsa /usr/sdt /usr/local"
swpaths=

case "$OSname" in
    SunOS)
        case "$OSrelease" in
            5.7)
               swpaths="/afs/ncsa/packages/hdf/SunOS_5.7"
               ;;
	    *)
            # use default
	       ;;
        esac
        ;;
    HP-UX)
        case "$OSrelease" in
	   B.11.00)
	        swpaths="/afs/ncsa/packages/hdf/HPUX_11.00"
               ;;
           *)
           # use default
              ;;
        esac
	;;
    Linux)
	swpaths="/afs/ncsa/packages/hdf/Linux"
	;;
    OSF1)
	swpaths="/afs/ncsa/packages/hdf/OSF1_V4.0"
	;;
    *)
	# just use the defaults
	;;
esac

# Check if the hdf4 software is actually available.
# Accept the directory only if needed .h, .a and tools are found
# in the same place.  That way, they are more likely to be of the
# same version.
# 
swpaths="$swpaths $swpaths_defaults"
for sw in $swpaths; do
    if [ -r $sw/include/hdf.h -a -r $sw/lib/libdf.a -a -r $sw/bin/hdp ]; then
	SW_inc=$sw/include
	SW_lib=$sw/lib
	SW_bin=$sw/bin
	SW_Location=$sw
	break
    fi
done
}

# locate hdf5 software
locate_hdf5()
{
# this default is the best guess of locating hdf5 software
swpaths_defaults="/usr/ncsa /usr/sdt /usr/local"
swpaths=

case "$OSname" in
    SunOS)
        case "$OSrelease" in
            5.7)
               swpaths="/afs/ncsa/packages/hdf5/SunOS_5.7"
               ;;
	    *)
            # use default
	       ;;
        esac
        ;;
    HP-UX)
        case "$OSrelease" in
	   B.11.00)
	        swpaths="/afs/ncsa/packages/hdf5/HPUX_11.00"
               ;;
           *)
           # use default
              ;;
        esac
	;;
    Linux)
	swpaths="/afs/ncsa/packages/hdf5/Linux"
	;;
    FreeBSD)
        swpaths="/afs/ncsa/packages/hdf5/FreeBSD"
        ;;
    OSF1)
	swpaths="/afs/ncsa/packages/hdf5/OSF1_V4.0"
	;;
    *)
	# just use the defaults
	;;
esac

# Check if the hdf5 software is actually available.
# Accept the directory only if needed .h, .a and tools are found
# in the same place.  That way, they are more likely to be of the
# same version.
# 
swpaths="$swpaths $swpaths_defaults"
for sw in $swpaths; do
    if [ -r $sw/include/hdf5.h -a -r $sw/lib/libhdf5.a -a -r $sw/bin/h5dump ]; then
	SW_inc=$sw/include
	SW_lib=$sw/lib
	SW_bin=$sw/bin
	SW_Location=$sw
	break
    fi
done
}

# locate zlib software
locate_zlib()
{
# this default is the best guess of locating zlib software
swpaths_defaults="/usr /usr/local /usr/ncsa /usr/sdt"
swpaths=


# Check if the zlib software is actually available.
# Accept the directory only if needed .h, .a and tools are found
# in the same place.  That way, they are more likely to be of the
# same version.
# Don't know something specific to check the bin directory.  Maybe gzip?
# Just make sure it exists.
# 
swpaths="$swpaths $swpaths_defaults"
for sw in $swpaths; do
    if [ -r $sw/include/zlib.h -a	\
	    \( -r $sw/lib/libz.a -o -r $sw/lib/libz.so \) -a -d $cw/bin ]; then
	SW_inc=$sw/include
	SW_lib=$sw/lib
	SW_bin=$sw/bin
	SW_Location=$sw
	break
    fi
done

# if none found, try HDF4 software which contains a version of zlib.
if [ x-$SW_Location = x- ]; then
    locate_hdf4
fi

}

# Main
#
# Options
#
if [ $# -lt 1 ]; then
    USAGE
    exit 1
fi

if [ "$1" = -h ]; then
    USAGE
    exit 0
fi

SW=$1
shift

# locations of the software seeked.
SW_inc=			# include place
SW_lib=			# library place
SW_bin=			# binary place
SW_Location=		# parent directory of all the above

OSname=`uname -s`
OSrelease=`uname -r`

case $SW in
hdf4|hdf)
    locate_hdf4
    ;;
hdf5)
    locate_hdf5
    ;;
zlib)
    locate_zlib
    ;;
*)
    echo "unknown software ($SW)"
    USAGE
    exit 1
    ;;
esac

# show the results located, separated by commas.
if [ -n "${SW_inc}" -a -n "${SW_lib}" -a -n "${SW_bin}" ]; then
    echo ${SW_inc},${SW_lib},${SW_bin}
    exit 0
else
    exit 1
fi