#!/bin/sh

##########################################################################
#
# IMPORTANT: The binaryInstall.src file is a source file, NOT an
# executable shell script!! Used to generate grass-MAJ.MIN.VER-ARCH-DD_MM_YYYY-install.sh by
# make bindist
#  
# GRASS binary package installation tool
# platform independent
#
# $Id: binaryInstall.src,v 1.9.6.1 2006/08/12 16:09:40 markus Exp $
# 1999-2000 by Markus Neteler, neteler@itc.it
#
##########################################################################

# Set a zero size variable for testing if this file is a source file. Note
# that the make bindist command will change this line to TEST_STR = executable
# without the spaces surrounding the equal sign
TEST_STR=

# Use a text string for sed to recognize to insert the proper version
NAME_VER=BIN_DIST_VERSION
TAR_FILE_SIZE=SIZE_TAR_FILE
ARCH=ARCHITECTURE

GRASSPRG=GRASSPRG_NAME

# Set the default BINDIR and DESTDIR directories
BINDIR=/usr/local/bin
DESTDIR=/usr/local/grass$NAME_VER
UNINSTALL=grass${NAME_VER}uninstall.sh

# Check if this is a source file or not
if [ -z "$TEST_STR" ] ; then
    echo "This is a source script, not an executable script which can be run."
    exit
fi

# Check for first parameter:
if [ $# -lt 1 -o "$1" = "-h" -o "$1" = "-help" -o "$1" = "--help"  ] ; then
    echo "

GRASS GIS $NAME_VER binary package installation tool

Usage:	grass-$NAME_VER-install.sh grass-$NAME_VER.tar.gz [dest_dir] [bin_dir]

      with:
        [dest_dir] - optional: FULL path name to the installation directory
                     (default: /usr/local/grass$NAME_VER/)
        [bin_dir] - optional: FULL path name to the grass binary directory
                     (default: /usr/local/bin/)
		     Notes: 1) Only the grass executable file is stored here
		     	    2) If you want to change the binary directory only
			       then you need to specify the destination
			       directory as well

You may need login as root for installation.
"
    exit
fi

# Check for second parameter:
if [ "$2" ] ; then
    DESTDIR=$2
fi

# Check for third parameter:
if [ "$3" ] ; then
    BINDIR=$3
fi

# Print out script identification message
echo ""
echo "GRASS GIS $NAME_VER binary package installation tool"
echo ""

# Check for correct package name:
if [ ! -f $1 ] ; then 
    echo "ERROR: Wrong package name $1. File does not exists."
    echo ""
    exit
fi

# Obtain the package name and path
CURR_DIR=`pwd`
PACKAGE_NAME=`basename $1`
PACKAGE_DIR=`dirname $1`

# the dirname command uses . and .. if found so we need the absolute path
cd $PACKAGE_DIR
PACKAGE_DIR=`pwd`

# Check if package is first parameter and in gz or bz2 compression:
# is package in .tar.gz format?
echo $PACKAGE_NAME | grep "\.tar\.gz" > /dev/null
if [ $? -eq 0 ] ; then
    UNPACK=gunzip
    	
    # Is gunzip there?
    IFSSAVE="$IFS"
    IFS=":"
    GUNZIP=""
    for TEST in $PATH ; do
        if [ -x $TEST/gunzip ] ; then
	    GUNZIP="$TEST/gunzip"
	fi
    done
    # which gunzip | grep -v no > /dev/null
    IFS="$IFSSAVE"
    if [ ! "$GUNZIP" ] ; then
        echo "No gunzip installed. Please get from:"
        echo "   http://www.gnu.org/software/gzip/gzip.html"
        exit
    fi
else
    # not in .tar.gz format, perhaps in .tar.bz2 format?
    echo $PACKAGE_NAME | grep "\.tar\.bz2" > /dev/null
    if [ $? -eq 0 ] ; then
        UNPACK=bunzip2
    
        # Is bunzip2 there?
        IFSSAVE="$IFS"
        IFS=":"
        BUNZIP2=""
        for TEST in $PATH ; do
            if [ -x $TEST/bunzip2 ] ; then
	        BUNZIP2="$TEST/bunzip2"
	    fi
        done
        IFS="$IFSSAVE"
        # which bunzip2 | grep -v no > /dev/null
        if [ ! "$BUNZIP2" ] ; then
    	    echo "No bunzip2 installed. Please get from:"
    	    echo "   http://sources.redhat.com/bzip2/index.html"
    	    exit
        fi
    else
        # not in .tar.gz or .tar.bz2 format, completely wrong!
        echo "ERROR: You need the GRASS binary package in .tar.gz compression "
        echo "or .tar.bz2."
        echo ""
        exit
    fi
fi

# Check if the size of the tar gzip file is the same as what was on the server
SIZE=`ls -l $PACKAGE_NAME | tr -s " " | cut -d" " -f5`
if [ $? -ne 0 ] ; then
    echo "ERROR while installing binaries!"
    echo "Exiting."
    exit
fi

if [ $SIZE -ne $TAR_FILE_SIZE ] ; then
    echo "ERROR: The size of the binary package is not correct."
    echo "  Perhaps there was a transmission error. Please download"
    echo "  the package again"
    echo ""
    exit
fi

echo "Using $UNPACK decompressor..."

echo "The package $PACKAGE_NAME seems to be o.k."
echo " Proceeding..."
echo ""

# Check if the paths for the binary and the destination are the same
BIN_PATH1=$BINDIR/grass-$NAME_VER
BIN_PATH2=$BIN_PATH1/

if [ $BIN_PATH1 = $DESTDIR -o $BIN_PATH2 = $DESTDIR ] ; then
    echo "ERROR:"
    echo "It appears that the destination directory path is the same as the"
    echo "path for the grass binary executable. This results in a name"
    echo "conflict between the destination directory and the executable."
    echo "Please run this script again with a different path name for the"
    echo "destination directory."
    exit
fi

# Check if BINDIR is a directory
if [ ! -d "$BINDIR" ] ; then
    
    # Check if BINDIR is a file
    if [ -f "$BINDIR" ] ; then
    	echo ""
	echo "ERROR: $BINDIR is a file not a directory."
	echo "Please specify a directory for the binary executable directory."
	exit
    fi
   
    mkdir -p $BINDIR
    
    if [ $? -ne 0 ] ; then
	echo "An error occured trying to create $BINDIR ! Exiting."
	exit
    fi
fi

# Check if DESTDIR is appropriate
echo "Checking and creating installation directory..."

if [ ! -d "$DESTDIR" ] ; then

    # Check if a word "grass" is in string $DESTDIR
    echo $DESTDIR | grep "grass" > /dev/null
    
    if [ $? -eq 1 ] ; then
    	echo "WARNING: Your destination path $DESTDIR does not contain the word 'grass'"
        echo "Continue (y/n)?"
        read ans         
        
	if [ "$ans" = "n" -o "$ans" = "N" ] ; then
            exit
        fi
    fi
    
    # Check if DESTDIR is a file
    if [ -f "$DESTDIR" ] ; then
    	echo ""
	echo "ERROR: $DESTDIR is a file not a directory."
	echo "Please specify a directory for the destination directory"
	exit
    fi

    mkdir -p $DESTDIR
    
    if [ $? -ne 0 ] ; then
    	echo "An error occured trying to create $DESTDIR! Exiting."
    	exit
    fi
else
    if [ -d $DESTDIR/bin ] ; then
    	echo ""
        echo "ERROR: Old GRASS distribution existing in $DESTDIR!"
        echo "Remove first!"
        exit
    else

    	# Check if a word "grass" is in string $DESTDIR
        echo $DESTDIR | grep "grass" > /dev/null
        
	if [ $? -eq 1 ] ; then
            echo "WARNING: Your destination path $DESTDIR does not contain the word 'grass'"
            echo "Continue (y/n)?"
            read ans         
            
	    if [ "$ans" = "n" -o "$ans" = "N" ] ; then
            	exit
            fi
        fi

	# Check if DESTDIR is writable
	touch $DESTDIR/test$$ > /dev/null
	if [ $? -ne 0 ] ; then
	    echo "ERROR: Destination directory $DESTDIR is not"
	    echo "writable, try installing as root!"
	    echo "Exiting."    
	    exit 1
        fi
	rm -f $DESTDIR/test$$ > /dev/null

    fi        
fi


# Start the installation job...
echo "Installing GRASS binaries into $DESTDIR"
echo ""

echo "Uncompressing the package and extracting to target directory..."
PACK_FILE=`echo $PACKAGE_DIR/$PACKAGE_NAME | sed 's+^//+/+g'`
cd $DESTDIR; $UNPACK -c $PACK_FILE | tar -xf -
if [ $? -eq 1 ] ; then
    echo "An error occured or user break while installing binaries! Exiting."
    exit
fi

# Get rid of any CVS directories
find . -name CVS -exec rm -rf {} \; 2>/dev/null ; true
cd $CURR_DIR

# Creating start script
echo "Creating start script:"
echo "$BINDIR/$GRASSPRG -> $BINDIR/grass-$NAME_VER"

STRING="s|^GISBASE.*|GISBASE\=\'$DESTDIR\'|g"

sed -e $STRING $DESTDIR/$GRASSPRG.tmp > $BINDIR/grass-$NAME_VER
if [ $? -eq 1 ] ; then
  echo "An error occured trying to create the grass start script! Exiting."
  echo "You probably do not have permission to install into $BINDIR."
  echo "You may need to be the root user to install in that directory."
  exit
fi

ln -sf $BINDIR/grass-$NAME_VER $BINDIR/$GRASSPRG
chmod ugo+x $BINDIR/grass-$NAME_VER

if [ $? -eq 1 ] ; then
    echo "An error occured trying to create the grass start script! Exiting."
    echo "You probably do not have permission to install into $BINDIR."
    echo "You may need to be the root user to install in that directory."
    exit
fi

echo "Creating the locks directory for monitors..."
SERVERNAME=`uname -n | sed -e "s/\..*//"`

if [ ! -d $DESTDIR/locks ] ; then
    mkdir $DESTDIR/locks
fi

rm -rf $DESTDIR/locks/*
mkdir $DESTDIR/locks/$SERVERNAME
chmod -R 1777 $DESTDIR/locks

echo""

# Print out some messages
echo "Installation finished. Start GRASS $NAME_VER with"
echo "    $BINDIR/$GRASSPRG"
echo ""
#echo "The graphical user interface can be started within GRASS GIS."
#echo ""
#echo "You can uninstall grass by typing"
#echo "    sh $UNINSTALL"
#echo "in the directory $BINDIR"
echo ""
echo "Welcome to GRASS GIS. Enjoy this open source GRASS GIS!"
echo ""
