#!/bin/sh
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
# * This source file is part of SableVM.                            *
# *                                                                 *
# * See the file "LICENSE" for the copyright information and for    *
# * the terms and conditions for copying, distribution and          *
# * modification of this source file.                               *
# * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

JVM=SABLEVM_BINARY
REST=
OPTS=
VER=-Y

if [ $# -eq 0 ]; then
  echo "You need to specify some parameters for java-sablevm wrapper."
  echo "java-sablevm is parameter-compatible with 'java' command."
  echo "Help option is not implemented yet. See 'man java-sablevm' for now."
  exit 0
fi

# Timezone detection should be handled in Classpath, but used to be broken, so
# we worked it around here.  Disabled for now, not yet removed.
##if [ -r /etc/timezone ]; then
##  ZONE_NAME=`cat /etc/timezone | sed 's/[ \t]*#/#/g' | grep -v '^#' | \
##                grep -v '^[ \t]*$' | head -n 1 | awk '{ print $1 }'`
##  if [ "X$ZONE_NAME" != "X" ]; then
##    OPTS="-p user.timezone=${ZONE_NAME}"
##  fi
##fi

if [ "$1" != "" ]; then OPTSDONE=0; else OPTSDONE=1; fi

while [ $OPTSDONE -eq 0 ]
 do
  case "$1" in
    -help|--help|-h|-\?|-X)
      echo "Help option is not implemented yet. See 'man java-sablevm' for now."
      exit 0
    ;;
    -debug|-Xdebug|--debug)
      echo "Warning: $1 option not implemented in java-sablevm wrapper." >&2
    ;;
    -version|--version|-V)
      exec $JVM -V
    ;;
    -ss|-ms|-mx)
      echo "Warning: $1 option not implemented in java-sablevm wrapper." >&2
      shift
    ;;
    -Xgnuclasspath:*)
      # GNU Classpath *CVS* compatible mode
      rest=${1#-Xgnuclasspath:}
      value=${rest#*-Xgnuclasspath:}
      # check existence of gnucp-override.jar
      SVM_TOPDIR=`dirname $0`/..
      if [ ! -e $SVM_TOPDIR/share/sablevm/gnucp-overrides.jar ]; then
        echo "Error processing $1 directive.  Could not find gnucp-overrides.jar in:"
        echo "$SVM_TOPDIR/share/sablevm/gnucp-overrides.jar"
        echo "Try fetching one from http://sablevm.org/downloads/snapshots"
        echo "or install classpath from SableVM-Classpath package."
        exit 1
      fi
      # check existence of glibj.jar
      if [ ! -e $value/share/classpath/glibj.zip ]; then
        echo "Error processing $1 directive.  Could not find glibj.jar in:"
        echo "$value/share/classpath/glibj.zip"
        echo "Make sure path you gave is correct or install classpath from"
        echo "SableVM-Classpath package.  See: http://sablevm.org/download"
        exit 1
      fi
      # Setup things
      SVM_LIBRARY_PATH="$SVM_LIBRARY_PATH:$value/lib/classpath"
      OPTS="$OPTS -p sablevm.boot.class.path=$SVM_TOPDIR/share/sablevm/gnucp-overrides.jar:$value/share/classpath/glibj.zip"
    ;;
    -Xgnuclass*)
      echo "The '$1' parameter not well formed.  The proper usage woul be ie."
      echo "  -Xbootclasspath:/usr/local"
      echo "so that /usr/local/share/classpath/glibj.zip existed."
      echo "Also remember to fetch and install gnu-overrides.jar file from"
      echo "http://sablevm.org/downloads/snapshots and put it into ie."
      echo "\$prefix/share/sablevm, so that \$prefix/share/sablevm/gnucp-overrides.jar"
      echo "existed."
      exit 1
    ;;
    -Xbootclasspath/p:*)
      rest=${1#-Xbootclasspath/p:}
      value=${rest#*-Xbootclasspath/p:}
      OPTS="$OPTS -p sablevm.boot.class.path.prepend=$value"
    ;;
    -Xbootclasspath/a:*)
      rest=${1#-Xbootclasspath/a:}
      value=${rest#*-Xbootclasspath/a:}
      OPTS="$OPTS -p sablevm.boot.class.path.append=$value"
    ;;
    -Xbootclasspath:*)
      rest=${1#-Xbootclasspath:}
      value=${rest#*-Xbootclasspath:}
      OPTS="$OPTS -p sablevm.boot.class.path=$value"
    ;;
    -X*)
      echo "Warning: $1 option not implemented in java-sablevm wrapper." >&2
    ;;
    -client|-server|-noclassgc|-noverify|--noverify)
      echo "Warning: $1 option not implemented in java-sablevm wrapper." >&2 ;;
    -da|-disableassertions|-dsa|-disablesystemassertions)
      echo "Warning: $1 option not implemented in java-sablevm wrapper." >&2 ;;
    -ea|-enableassertions|-esa|-enablesystemassertions)
      echo "Warning: $1 option not implemented in java-sablevm wrapper." >&2
      echo "You can compile SableVM with --enable-debugging-features option instead." >&2
    ;;
    -classpath|--classpath|-cp|--cp)
      CMD_CLASSPATH="$2"
      shift
    ;;
    -classpath=*)
      rest=${1#-classpath}
      value=${rest#*=}
      CMD_CLASSPATH="$value"
    ;;
    --classpath=*)
      rest=${1#--classpath}
      value=${rest#*=}
      CMD_CLASSPATH="$value"
    ;;
    -addclasspath|--addclasspath)
      if [ "X$CMD_CLASSPATH" = "X" ]; then
        CMD_CLASSPATH="$2"
      else
	CMD_CLASSPATH="$CMD_CLASSPATH:$2"
      fi
      shift
    ;;
    -Djava.library.path=*)
      # FIXME: we don't handle property names and values containing spaces and special chars
      value=${1#-Djava.library.path=}
      SVM_LIBRARY_PATH="$value:$SVM_LIBRARY_PATH"
    ;;
    -D*)
      # FIXME: we don't handle property names and values containing spaces and special chars
      rest=${1#-D}
      value=${rest#*=}
      key=${rest%%=$value}
      #echo "rest='$rest' key='$key' value='$value'"
      OPTS="$OPTS --property=${key}=${value}"
    ;;
    -jar|--jar)
      JAR_CLASSPATH="$2"
      CLASS=`unzip -p $2 META-INF/MANIFEST.MF|grep -i "Main-Class: "|tr -d \\\\r | awk '{ print $2 }'`
      RES=$?
      if [ $RES -ne 0 ]; then
        echo "Error: Unable to uncompress $2"; exit 1;
      fi
      if [ "$CLASS" = "" ]; then
        echo "Error: No MANIFEST.MF or Main-Class: in MANIFEST.MF found in $2"; exit 1;
      fi
      OPTS="$OPTS $CLASS"
      # -jar is always the last option passed to java - the rest is being
      # passed to executed program (main method)
      OPTSDONE=1
      shift
      shift
    ;;
    -v|-verbose|--verbose)
      OPTS="$OPTS -v"
    ;;
    -verbose-gc|--verbose-gc)
      OPTS="$OPTS -g"
    ;;
    -verbose*jni)
      OPTS="$OPTS -j"
    ;;
    -verbosemem|-verbosejit|-verbose*)
      echo "Warning: $1 option not implemented in java-sablevm wrapper." >&2 ;;
    -showversion|--showversion)
      VER=
    ;;
    -vmdebug)
      shift # a string of comma-separated flags follows -vmdebug
      echo "Warning: $1 option not implemented in java-sablevm wrapper." >&2
      echo "You can compile SableVM with --enable-debugging-features option instead." >&2
    ;;
    -*)
      echo "Warning: $1 option NOT RECOGNIZED by java-sablevm." >&2
      echo "A not recognized option will be just passed to SableVM." >&2
      echo "Note that we don't know if we should expect an argument after it." >&2
      echo "It almost _surely_ will result in an errors when the param is followed" >&2
      echo "by an argument. Refer to 'man java-sablevm' and 'man sablevm'." >&2
      REST="$REST $1"
    ;;
    --)
      OPTSDONE=1
    ;;
    *)
      OPTSDONE=1
    ;;
  esac
  if [ $OPTSDONE -ne 1 ]; then shift; fi
done

# setting -jar or -classpath nullfies CLASSPATH env var
if [ "X$JAR_CLASSPATH" != "X" ]; then
  if [ "X$CMD_CLASSPATH" != "X" ]; then
    CLASSPATH="$JAR_CLASSPATH:$CMD_CLASSPATH"
  else
    CLASSPATH="$JAR_CLASSPATH"
  fi
else
  if [ "X$CMD_CLASSPATH" != "X" ]; then
    CLASSPATH="$CMD_CLASSPATH"
  else
    if [ "X$CLASSPATH" = "X" ]; then
      CLASSPATH="."
    fi
  fi
fi  

OPTS="--classpath=$CLASSPATH $OPTS"
# this is so that jikes worked w/o problems, i.e. when called by Ant
BOOTCLASSPATH="SABLEVM_CLASSDIR:SABLEVM_CLASSDIR/libclasspath.jar:SABLEVM_CLASSDIR/resources.jar"

if [ "X$LD_LIBRARY_PATH" != "X" -o "X$SVM_LIBRARY_PATH" != "X" ]; then
  OPTS="-p java.library.path=$SVM_LIBRARY_PATH:$LD_LIBRARY_PATH:/usr/lib $OPTS"
fi

export CLASSPATH BOOTCLASSPATH

#echo $JVM $VER $OPTS $REST "$@"
exec $JVM $VER $OPTS $REST "$@"

echo "Error: unable to execute $JVM." >&2
exit 1