#!/bin/sh

if [ -n "$update_jdbc4_debug" ]; then
  set -x
fi

# Check location
if [ ! -d ../../java/engine ]; then
  echo "Could not locate the source code for the Derby engine."
  echo "Please run this script from inside the tools/jdbc4 directory."
  exit 1
fi

THISDIR=`pwd`
SRCDIR=`cd ../.. && pwd`

# Check environment variables
if [ -z "$DERBY_HOME" ]; then
  echo "Please set DERBY_HOME to the location of your Derby installation."
  exit 1
fi

if [ ! -f "$DERBY_HOME/lib/derby.jar" -a -f "$DERBY_HOME/lib/derbyclient.jar" ]; then
  echo "Could not find the Derby jars in \$DERBY_HOME/lib"
  exit 1
fi

cygwin=false
darwin=false
mks=false
case "`uname`" in 
  CYGWIN*) cygwin=true ;;
  Darwin*) darwin=true ;;
esac

if [ -z "$JAVA_HOME" ]; then
  if [ -n "$darwin" ]; then
    JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Home
  elif [ -d /usr/j2se -a -x /usr/j2se/bin/javac ]; then
    JAVA_HOME=/usr/j2se
  fi
fi

if [ ! -x "$JAVA_HOME/bin/javac" ]; then
  echo "Could not find a Java compiler at \$JAVA_HOME/bin/javac."
  echo "Check the setting of the JAVA_HOME environment variable."
  exit 1
fi

# Check that the JVM version is 1.6.0  
"$JAVA_HOME/bin/java" -version 2> java.version
VERSION=`head -1 java.version | sed 's/java version "//g' | sed 's/[-_].*$//g'`
if [ `expr $VERSION : 1.6.0` -eq 0 ]; then
  echo "The JVM in \$JAVA_HOME is not version 1.6.0"
  echo "To use this script to compile the JDBC 4.0 Derby classes,"
  echo "you need a 1.6.0 level VM"
  exit 1
fi

# Set up LOCALCLASSPATH, for cygwin or mks, use ;
CPS=:
if [ \( "`expr $SHELL : '.*sh.exe$'`" -gt 0 \) -a \( "$cygwin" = "false" \) ]; then
    CPS=';'
    mks=true
fi
LOCALCLASSPATH="$DERBY_HOME/lib/derby.jar$CPS$DERBY_HOME/lib/derbyclient.jar"

# adjust paths for cygwin
DERBY_HOME_NML=$DERBY_HOME
if $cygwin; then
  if [ "$OS" = "Windows_NT" ] && cygpath -m .>/dev/null 2>/dev/null ; then
    format=mixed
  else
    format=windows
  fi
  DERBY_HOME_NML=`cygpath --$format "$DERBY_HOME_NML"`
  JAVA_HOME=`cygpath --$format "$JAVA_HOME"`
  LOCALCLASSPATH=`cygpath --path --$format "$LOCALCLASSPATH"`
  SRCDIR=`cygpath --path --$format "$SRCDIR"`
  # now set CPS to ; for later use
  CPS=';'
fi

# compile the client classes
echo "Compiling the client classes for JDBC 4.0"
for i in `cat client.list`
do
  FILE=`echo $i | tr '\\\\' '/'` 
  if [ ! \( "$cygwin" = "true" \) -o \( "$mks" = "true" \) ]; then
    FILE=`echo $FILE | sed 's/.$//g'`
  fi
  if $mks; then
    FILE=$i
  fi
  CLASSES="$FILE $CLASSES"
done

cd $SRCDIR/java/client
mkdir -p "$DERBY_HOME/jdbc4classes/client"
"$JAVA_HOME/bin/javac" -d "$DERBY_HOME_NML/jdbc4classes/client" \
                       -cp "$LOCALCLASSPATH" \
                       -sourcepath "$SRCDIR/java/client$CPS$SRCDIR/java/shared$CPS$SRCDIR/java/engine" \
                        $CLASSES

if [ $? -gt 0 ]; then
  echo "There was an error compiling the client classes. Exiting."
  cd "$THISDIR"
  exit 1
fi

cd $THISDIR

echo "Updating derbyclient.jar"
"$JAVA_HOME/bin/jar" uf "$DERBY_HOME_NML/lib/derbyclient.jar" -C "$DERBY_HOME_NML/jdbc4classes/client" org

if [ $? -gt 0 ]; then
  echo "Error updating derbyclient.jar. It may no longer be usable."
  exit 1
fi

# compile the engine classes
echo "Compiling the engine classes for JDBC 4.0"
unset CLASSES
for i in `cat engine.list`
do
  FILE=`echo $i | tr '\\\\' '/'` 
  if [ ! "$cygwin" = "true" ]; then
    FILE=`echo $FILE | sed 's/.$//g'`
  fi
  if $mks; then
    FILE=$i
  fi
  CLASSES="$FILE $CLASSES"
done

cd "$SRCDIR/java/engine"  
mkdir -p "$DERBY_HOME/jdbc4classes/engine"
"$JAVA_HOME/bin/javac" -d "$DERBY_HOME_NML/jdbc4classes/engine" \
                       -cp "$LOCALCLASSPATH" \
                       -sourcepath "$SRCDIR/java/engine$CPS$SRCDIR/java/shared" \
                        $CLASSES

# patch up modules.properties do the driver will load
cd "$DERBY_HOME/jdbc4classes/engine"
"$JAVA_HOME/bin/jar" xf "$DERBY_HOME_NML/lib/derby.jar" org/apache/derby/modules.properties
if [ \( "$cygwin" = "true" \) -o \( "$mks" = "true" \) ]; then
  cat "$THISDIR/modules.patch" >> "$DERBY_HOME/jdbc4classes/engine/org/apache/derby/modules.properties"
else 
  cat "$THISDIR/modules.patch" | sed 's/.$//g' >> "$DERBY_HOME/jdbc4classes/engine/org/apache/derby/modules.properties"
fi

if [ $? -gt 0 ]; then
  echo "There was an error compiling the engine classes. Exiting."
  cd "$THISDIR"
  exit 1
fi

cd "$THISDIR"

echo "Updating derby.jar"
"$JAVA_HOME/bin/jar" uf "$DERBY_HOME_NML/lib/derby.jar" -C "$DERBY_HOME_NML/jdbc4classes/engine" org

if [ $? -gt 0 ]; then
  echo "Error updating derby.jar. It may no longer be usable."
  exit 1
fi

# cleanup
rm -r "$DERBY_HOME/jdbc4classes"
rm "$THISDIR/java.version"