libadalang/utils/doinstall.tmplt

#! /bin/sh
#
# Libadalang binary distribution installation script
# Copyright (c) 2018-2020, AdaCore
#

####################
# Global variables #
####################

version="<version>"
machine="<machine>"
prefix="/usr/local/gnat"

TMPDIR=${TEMP:=`pwd`}
tmpout="${TMPDIR}/install.log"
tmpvalue="${TMPDIR}/install.$$"

#####################################################
# Says that a given command was not found and exits #
#####################################################

command_not_found () {
    cmd="$1"
    cat << EOF

The $cmd command could not be found on your PATH. It is required to have
it in your PATH in order to install successfully $long_qualifier. Please
add the directory were $cmd can be found on your PATH or contact your
system administrator to have it installed in a standard location.


EOF
    exit 1
}

#########################
# Check the environment #
#########################

check_env () {

    # type returns 0 on success, >0 on failure
    for cmd in mkdir tar tee cat clear; do
	type_out=`type $cmd 2>&1`
	type_rv=$?
	if [ $type_rv -ne 0 ]; then
	    command_not_found $cmd
	fi
    done
}

###################################
# Set the production descriptions #
###################################

set_qualifier () {
    qualifier="Libadalang"
    long_qualifier="$qualifier"
}

###########################################
# Ask for the base installation directory #
###########################################

ask_base_prefix() {

   cat << EOF

    In which directory do you want to install $qualifier ? [$prefix]:
EOF
    read ans_prefix

    if [ "x$ans_prefix" != "x" ]; then
        prefix=$ans_prefix
    fi
}

###################################
# Install Libadalang into $prefix #
###################################

standard_installation () {

   # Makes the real installation
   mkdir -p $prefix
   dirs="include lib share"
   if [ -d lib64 ]
   then
       dirs="$dirs lib64"
   fi
   (tar cf - $dirs | (cd $prefix; tar xf -)) 2>&1 | tee $tmpout

   # Check that installation was OK

   error_exit=false

   if [ ! -f "$tmpout" ]; then
      error_exit=true
      cat << EOF


   An error occurred during installation. The installation log file,
   $tmpout, could not be written.
EOF

   elif [ -s "$tmpout" ]; then
      error_exit=true
      cat << EOF


   An error occurred during installation. You can find a complete log
   of the installation in $tmpout.
EOF
   fi

   if $error_exit; then
      cat << EOF
   Don't hesitate to send a message to support@adacore.com
   with you customer number on the subject line if you have any
   question about this installation process.

EOF
      exit 1
   fi

   case $machine in
      *) clear ;;
   esac

   cat << EOF


   $qualifier is now installed. To use it, you must update several
   environment variables.  Assuming you are using a Bourne-compatible
   shell, the following commands enable you to do this:

      GPR_PROJECT_PATH=$prefix/share/gpr:\$GPR_PROJECT_PATH
      LIBRARY_PATH=$prefix/lib:\$LIBRARY_PATH
      LD_LIBRARY_PATH=$prefix/lib:\$LD_LIBRARY_PATH
      export GPR_PROJECT_PATH LIBRARY_PATH LD_LIBRARY_PATH

   Thank you for installing $long_qualifier!

EOF
}

######################
#                    #
# Start installation #
#                    #
######################

set_qualifier
check_env

# This avoids some problems when cd prints the new directory when CDPATH
# is defined
unset CDPATH

if [ $# -eq 1 ]; then
    if [ "$1" = "--help" ]; then
        cat <<EOF
Usage: $0 [install-dir]

When no argument is specified, run the Libadalang installer interactively.
Otherwise, install in batch mode under the "install-dir" prefix.
EOF
    else
        echo "Installing Libadalang under $1"
        prefix="$1"
        standard_installation
    fi
    exit 0
fi

clear
cat << EOF


   This script is provided to perform the installation of the
   binary version of the $qualifier package identified as

   $version for $machine

   This package is maintained by AdaCore, For information on commercial
   support please contact sales@adacore.com.

   Confirmation is required before any write action is taken.

   Please press RETURN to continue.

EOF

read dummy

# Ask information for non-standard installation
confirm="KO"
curdir=`pwd`
while [ "x$confirm" != "xOK" ]; do

    # Ask the base directory for installation
    clear
    cat << EOF


    To install $qualifier, you need to specify a base directory.
    All the files will be installed in subdirectories of this base.

    Important Note: You should not use ~ or ~username wildcards
    when specifying this directory name.
EOF
    ask_base_prefix
    while [ "$prefix" = "$curdir" ]; do
       #target base directory cannot be the same as the current dir
       cat << EOF

    The target base directory cannot be the current directory.
    Please enter another directory name.
EOF
       ask_base_prefix
    done

    # Ask confirmation
    cat << EOF


    The $long_qualifier installation directory will be:
      $prefix
    Is this correct ? Type 'Y' if so, otherwise type 'N' and you'll
    be prompted for another directory name.

    Do you want to continue ? [yY|nN]:

EOF
    read confirm
    case $confirm in
    [yY])
	confirm="OK"
	;;
    *)
    	confirm="KO"
	;;
    esac
done

# Ask confirmation
clear
cat << EOF


   $long_qualifier is now about to be installed in
      $prefix.
   Type 'Y' if you want to proceed with installation or any other key
   if you wish to abort.

   Do you want to proceed with installation ? [yY|nN]:

EOF
read proceed
case $proceed in
[yY]*)
    ;;
*)
    echo "Aborting installation on user request"
    exit 0
    ;;
esac

# Do the real installation
standard_installation