#!/bin/sh
# Update messages_xx.po and messages_xx.class files, from both java and jsp sources.
# Requires installed programs xgettext, msgfmt, msgmerge -q, and find.
#
# usage:
#    bundle-messages.sh (generates the resource bundle from the .po file)
#    bundle-messages.sh -p (updates the .po file from the source tags, then generates the resource bundle)
#
# zzz - public domain
#
cd $(dirname $0)
CLASS=net.i2p.i2ptunnel.web.messages
TMPFILE=build/javafiles.txt
export TZ=UTC
RC=0
if ! $(which javac >/dev/null 2>&1); then
  export JAVAC="${JAVA_HOME}/../bin/javac"
fi

if [ "$1" = "-p" ]; then
  POUPDATE=1
fi

# On Windows, one must specify the path of command find, as Windows has its own version of find.
if which find | grep -q -i windows; then
  export PATH=.:/bin:/usr/local/bin:$PATH
fi
# Fast mode - update ondemond
# set LG2 to the language you need in environment variables to enable this

# add ../java/ so the refs will work in the po file
JPATHS="../java/src/net/i2p/i2ptunnel/web ../jsp/WEB-INF"
for i in ../locale/messages_*.po; do
  # get language
  LG=${i#../locale/messages_}
  LG=${LG%.po}

  # skip, if specified
  if [ $LG2 ]; then
    [ $LG != $LG2 ] && continue || echo INFO: Language update is set to [$LG2] only.
  fi

  if [ "$POUPDATE" = "1" ]; then
    # make list of java files newer than the .po file
    find $JPATHS -name *.java -newer $i >$TMPFILE
  fi
  if [ -s ../jsp/WEB-INF/classes/net/i2p/i2ptunnel/web/messages_$LG.class -a \
    ../jsp/WEB-INF/classes/net/i2p/i2ptunnel/web/messages_$LG.class -nt $i -a \
    ! -s $TMPFILE ]; then
    continue
  fi

  if [ "$POUPDATE" = "1" ]; then
    echo "Updating the $i file from the tags..."
    # extract strings from java and jsp files, and update messages.po files
    # translate calls must be one of the forms:
    # _t("foo")
    # _x("foo")
    # intl._t("foo")
    # intl.title("foo")
    # In a jsp, you must use a helper or handler that has the context set.
    # To start a new translation, copy the header from an old translation to the new .po file,
    # then ant distclean updater.
    find $JPATHS -name *.java >$TMPFILE
    xgettext -f $TMPFILE -F -L java --from-code=UTF-8 --width=0 --no-wrap --add-comments \
      --keyword=_t --keyword=_x --keyword=intl._ --keyword=intl.title --keyword=unlessAdvanced \
      -o ${i}t
    if [ $? -ne 0 ]; then
      echo "ERROR - xgettext failed on ${i}, not updating translations"
      rm -f ${i}t
      RC=1
      break
    fi
    msgmerge -q -U -N --backup=none $i ${i}t
    if [ $? -ne 0 ]; then
      echo "ERROR - msgmerge -q failed on ${i}, not updating translations"
      rm -f ${i}t
      RC=1
      break
    fi
    rm -f ${i}t
    # so we don't do this again
    touch $i
  fi

  if [ "$LG" != "en" ]; then
    # only generate for non-source language
    # echo "Generating ${CLASS}_$LG ResourceBundle..."

    msgfmt -V | grep -q -E ' 0\.((19)|[2-9])'
    if [ $? -ne 0 ]; then
      # slow way
      # convert to class files in jsp/WEB-INF/classes
      msgfmt --java2 -r $CLASS -l $LG -d ../jsp/WEB-INF/classes $i
      if [ $? -ne 0 ]; then
        echo "ERROR - msgfmt failed on ${i}, not updating translations"
        # msgfmt leaves the class file there so the build would work the next time
        find build -name messages_${LG}.class -exec rm -f {} \;
        RC=1
        break
      fi
    else
      # fast way
      # convert to java files in build/messages-src
      TD=build/messages-src-tmp
      TDX=$TD/net/i2p/i2ptunnel/web
      TD2=build/messages-src
      TDY=$TD2/net/i2p/i2ptunnel/web
      rm -rf $TD
      mkdir -p $TD $TDY
      msgfmt --java2 --source -r $CLASS -l $LG -d $TD $i
      if [ $? -ne 0 ]; then
        echo "ERROR - msgfmt failed on ${i}, not updating translations"
        # msgfmt leaves the class file there so the build would work the next time
        find src/WEB-INF/classes -name messages_${LG}.class -exec rm -f {} \;
        RC=1
        break
      fi
      mv $TDX/messages_$LG.java $TDY
      rm -rf $TD
    fi
  fi
done
rm -f $TMPFILE
exit $RC
