#!/bin/sh
#
# Update messages_xx.po and .mo files
# 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
#
TMPFILE=filelist.txt
export TZ=UTC
RC=0

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

# on windows, one must specify the path of command find
# since 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

JPATHS=".."
for i in po/messages_*.po; do
  # get language
  LG=${i#po/messages_}
  LG=${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 -maxdepth 1 -name i2prouter -newer $i >$TMPFILE
  fi

  if [ -s mo/$LG/LC_MESSAGES/i2prouter.mo -a \
    mo/$LG/LC_MESSAGES/i2prouter.mo -nt $i -a \
    ! -s $TMPFILE ]; then
    continue
  fi

  if [ "$POUPDATE" = "1" ]; then
    echo "Updating the $i file from the tags..."
    # extract strings from files, and update messages.po files
    find $JPATHS -maxdepth 1 -name i2prouter >$TMPFILE
    xgettext -f $TMPFILE -F -L Shell --from-code=UTF-8 \
      -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 $LG ResourceBundle..."

    # convert to class files in build/obj
    mkdir -p mo/$LG/LC_MESSAGES
    msgfmt -o mo/$LG/LC_MESSAGES/i2prouter.mo $i
    if [ $? -ne 0 ]; then
      echo "ERROR - msgfmt failed on ${i}, not updating translations"
      # msgfmt leaves the class file there so the build would work the next time
      rm -rf mo/$LG/LC_MESSAGES
      RC=1
      break
    fi
  fi
done
rm -f $TMPFILE
exit $RC
