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Filename : shade-jar
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#!/bin/bash
# Copyright (c) 2013 Red Hat, Inc.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the
#    distribution.
# 3. Neither the name of Red Hat nor the names of its
#    contributors may be used to endorse or promote products derived
#    from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Mikolaj Izdebski <mizdebsk@redhat.com>

set -e

if [ $# -ne 4 ]; then
    echo "Usage: $0 orig-namespace shaded-namespace in.jar out.jar" >&2
    echo "For example: $0 org.apache.log4j com.example.shaded.log4j \\" >&2
    echo "                 /usr/share/java/log4j.jar lib/shaded-log4j.jar" >&2
    exit 1
fi

if [ ! -x /bin/objectweb-asm3-processor ]; then
    echo "$0: Unable to execute objectweb-asm3-processor." >&2
    echo "$0: Make sure that objectweb-asm3 is installed." >&2
    exit 1
fi

tmp=$(mktemp -d)
trap "rm -rf ${tmp}" 0

objectweb-asm3-processor code xml -in "${3}" -out "${tmp}/content.jar" 2>/dev/null
mkdir "${tmp}/content"
(
  cd "${tmp}/content"
  jar xf ../content.jar
  find -name *.xml | xargs sed -i -e "s|${1//\.//}|${2//\.//}|g" -e "s|${1}|${2}|g"
  jar cfM ../content.jar *
)
objectweb-asm3-processor xml code -in "${tmp}/content.jar" -out "${4}" 2>/dev/null

exit 0