#!/bin/sh
# ----------------------------------------------------------------------------
# ----------------------------------------------------------------------------
# Ply Start Up Batch script
#
# Required ENV vars:
# ------------------
#   JAVA_HOME - location of a JDK home dir
#
# Optional ENV vars
# -----------------
#   PLY_HOME - location of ply's installed home dir
# ----------------------------------------------------------------------------

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

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

if [ -z "$PLY_HOME" ] ; then
  ## resolve links - $0 may be a link to ply's home
  PRG="$0"

  # need this for relative symlinks
  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

  saveddir=`pwd`

  PLY_HOME=`dirname "$PRG"`/..

  # make it fully qualified
  PLY_HOME=`cd "$PLY_HOME" && pwd`

  cd "$saveddir"
  # echo Using ply at $PLY_HOME
fi

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

# For Migwn, ensure paths are in UNIX format before anything is touched
if $mingw ; then
  [ -n "$PLY_HOME" ] &&
    PLY_HOME="`(cd "$PLY_HOME"; pwd)`"
  [ -n "$JAVA_HOME" ] &&
    JAVA_HOME="`(cd "$JAVA_HOME"; pwd)`"
  # TODO classpath?
fi

if [ -z "$JAVA_HOME" ]; then
  javaExecutable="`which javac`"
  if [ -n "$javaExecutable" -a ! "`expr \"$javaExecutable\" : '\([^ ]*\)'`" = "no" ]; then
    # readlink(1) is not available as standard on Solaris 10.
    readLink=`which readlink`
    if [ ! `expr "$readLink" : '\([^ ]*\)'` = "no" ]; then
      javaExecutable="`readlink -f \"$javaExecutable\"`"
      javaHome="`dirname \"$javaExecutable\"`"
      javaHome=`expr "$javaHome" : '\(.*\)/bin'`
      JAVA_HOME="$javaHome"
      export JAVA_HOME
    fi
  fi
fi

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."
  echo "  We cannot execute $JAVACMD"
  exit 1
fi

if [ -z "$JAVA_HOME" ] ; then
  echo "Warning: JAVA_HOME environment variable is not set."
fi

CLASSPATH="${PLY_HOME}/lib/ply-1.0.jar:${PLY_HOME}/lib/ply-util-1.0.jar"

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

# Determine the ply version
PLY_VERSION=""
if [ -e $PLY_HOME/version ]; then
  PLY_VERSION=`cat $PLY_HOME/version`
fi
# Determine whether being run in a tty terminal
PLY_PIPED="false"
if tty -s <&1; then
  PLY_PIPED="false"
else
  PLY_PIPED="true"
fi
PLY_ENCODING="UTF-8"

exec "$JAVACMD" \
  -client -Xms32M -Xmx32M -noverify \
  -Xbootclasspath/a:"${CLASSPATH}" \
  "-Dfile.encoding=${PLY_ENCODING}" \
  "-Dply.home=${PLY_HOME}" \
  "-Dply.version=${PLY_VERSION}" \
  "-Dply.piped=${PLY_PIPED}" \
  "-Dply.java=${JAVACMD}" \
  "net.ocheyedan.ply.Ply" "$@"
