#!/bin/sh
# This file is part of the PDF Split And Merge Basic source code
# Copyright 2017 by Sober Lemur S.a.s. di Vacondio Andrea (info@pdfsam.org).
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 of the
# License, or (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.


# resolve links - $0 may be a softlink
PRG="$0"

while [ -h "$PRG" ]; do
  ls=`ls -ld "$PRG"`
  link=`expr "$ls" : '.*-> \(.*\)$'`
  if expr "$link" : '/.*' > /dev/null; then
    PRG="$link"
  else
    PRG=`dirname "$PRG"`/"$link"
  fi
done

PRGDIR=`dirname "$PRG"`
BASEDIR=`cd "$PRGDIR/.." >/dev/null; pwd`
RUNTIME="$BASEDIR"/runtime

if [ ! -d "$PDFSAM_JAVA_PATH" ]; then
  	# the rutime is supplied
	if [ -d "$RUNTIME" ]; then
	  JAVA_HOME="$RUNTIME"
	fi
else
  JAVA_HOME="$PDFSAM_JAVA_PATH"
fi


# OS specific support.  $var _must_ be set to either true or false.
cygwin=false;
darwin=false;
case "`uname`" in
  CYGWIN*) cygwin=true ;;
  Darwin*) darwin=true
           if [ -z "$JAVA_VERSION" ] ; then
             JAVA_VERSION="CurrentJDK"
           else
             echo "Using Java version: $JAVA_VERSION"
           fi
		   if [ -z "$JAVA_HOME" ]; then
		      if [ -x "/usr/libexec/java_home" ]; then
			      JAVA_HOME=`/usr/libexec/java_home`
			  else
			      JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/${JAVA_VERSION}/Home
			  fi
           fi
           ;;
esac

if [ -z "$JAVA_HOME" ] ; then
  if [ -r /etc/gentoo-release ] ; then
    JAVA_HOME=`java-config --jre-home`
  fi
fi

# For Cygwin, ensure paths are in UNIX format before anything is touched
if $cygwin ; then
  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --unix "$JAVA_HOME"`
fi

# If a specific java binary isn't specified search for the standard 'java' binary
if [ -z "$JAVACMD" ] ; then
  if [ -n "$JAVA_HOME"  ] ; then
    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
      # IBM's JDK on AIX uses strange locations for the executables
      JAVACMD="$JAVA_HOME/jre/sh/java"
    else
      JAVACMD="$JAVA_HOME/bin/java"
    fi
  else
    JAVACMD=`which java`
  fi
fi

if [ ! -x "$JAVACMD" ] ; then
  echo "Error: JAVA_HOME is not defined correctly." 1>&2
  echo "  We cannot execute $JAVACMD" 1>&2
  exit 1
fi

JAR_ARG="$BASEDIR"/pdfsam-basic-4.0.3.jar

# For Cygwin, switch paths to Windows format before running java
if $cygwin; then
  [ -n "$JAVA_HOME" ] && JAVA_HOME=`cygpath --path --windows "$JAVA_HOME"`
  [ -n "$BASEDIR" ] && BASEDIR=`cygpath --path --windows "$BASEDIR"`
fi

exec "$JAVACMD" -jar "$JAR_ARG" $JAVA_OPTS -Xmx512M \
  -Dapp.name="pdfsam-basic" \
  -Dapp.pid="$$" \
  -Dapp.home="$BASEDIR" \
  -Dbasedir="$BASEDIR" \
  -Dprism.lcdtext=false \
  org.pdfsam.basic.App \
  "$@"
