#!/bin/sh -e

# Licensed under the Apache License, Version 2.0 (the "License"); you may not
# use this file except in compliance with the License.  You may obtain a copy of
# the License at
#
#   http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
# License for the specific language governing permissions and limitations under
# the License.

# Bootstrap the pristine source ready for distribution.

SCRIPT_OK=0
SCRIPT_ERROR=1

ACINCLUDE_FILE="acinclude.m4"
ACINCLUDE_IN_FILE="acinclude.m4.in"
ACINCLUDE_TMP_FILE="acinclude.m4.tmp"
AC_CHECK_ICU_COMPRESSED_FILE="build-contrib/ac_check_icu.m4_2008-06-07.gz"
AUTHORS_FILE="authors.xml"
BUILD_AUX_DIRECTORY="build-aux"
CONFIG_GUESS_COMPRESSED_FILE="build-contrib/config.guess_2008-06-07.gz"
CONFIG_GUESS_FILE="build-aux/config.guess"
CONFIG_SUB_COMPRESSED_FILE="build-contrib/config.sub_2008-06-07.gz"
CONFIG_SUB_FILE="build-aux/config.sub"
M4_DIRECTORY="m4"
M4_AC_CHECK_ICU_FILE="m4/ac_check_icu.m4"
REPOSITORY_URI="http://svn.apache.org/repos/asf/incubator/couchdb/trunk"

basename=`basename $0`

get () {
    variable_name=$1
    echo "changequote(\`[', \`]')" > $ACINCLUDE_TMP_FILE
    sed -e "s/m4_//" < $ACINCLUDE_IN_FILE >> $ACINCLUDE_TMP_FILE
    echo $variable_name >> $ACINCLUDE_TMP_FILE
    if test -x "`which m4 || true`"; then
        `which m4` $ACINCLUDE_TMP_FILE | grep -v "^$" || true
    else
        if test -x "`which gm4 || true`"; then
            `which gm4` $ACINCLUDE_TMP_FILE | grep -v "^$" || true
        else
            echo unknown
        fi
    fi
    rm -f $ACINCLUDE_TMP_FILE
}

display_version () {
    cat << EOF
$basename - `get LOCAL_PACKAGE_NAME` `get LOCAL_VERSION_PRIMARY`

Licensed under the Apache License, Version 2.0 (the "License"); you may not use
this file except in compliance with the License.  You may obtain a copy of the
License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed
under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
CONDITIONS OF ANY KIND, either express or implied.  See the License for the
specific language governing permissions and limitations under the License.
EOF
}

display_help () {
    cat << EOF
Usage: $basename [OPTION]...

The $basename script bootstraps the pristeen source so that it can be built.

The exit status is 0 for success or 1 for failure.

Options:

  -h  display a short help message and exit
  -v  display version information and exit

Environment variables:

  REVISION  manual override for revision information

Report bugs at <`get LOCAL_BUG_URI`>.
EOF
}

display_error () {
    if test -n "$1"; then
        echo $1 >&2
    fi
    echo >&2
    echo "Try \`"$basename" -h' for more information." >&2
    exit $SCRIPT_ERROR
}

generate_acinclude () {
    if test -z "$REVISION"; then
        REVISION=`\`which svn\` info . 2> /dev/null | awk "/Revision:/{print \\$2}"`
    fi
    if test -z "`get LOCAL_VERSION_STAGE`" -o -z "$REVISION"; then
        sed "s/%release%//" < $ACINCLUDE_IN_FILE > $ACINCLUDE_FILE
    else
        sed "s/%release%/$REVISION/" < $ACINCLUDE_IN_FILE > $ACINCLUDE_FILE
    fi
}

process_file_collection () {
    echo "Installing \`"$BUILD_AUX_DIRECTORY"'"
    mkdir -p $BUILD_AUX_DIRECTORY
    echo "Installing \`"$CONFIG_GUESS_FILE"'"
    gzip --decompress --stdout \
        $CONFIG_GUESS_COMPRESSED_FILE > $CONFIG_GUESS_FILE
    echo "Installing \`"$CONFIG_SUB_FILE"'"
    gzip --decompress --stdout \
        $CONFIG_SUB_COMPRESSED_FILE > $CONFIG_SUB_FILE
    echo "Installing \`"$M4_DIRECTORY"'"
    mkdir -p $M4_DIRECTORY
    echo "Installing \`"$M4_AC_CHECK_ICU_FILE"'"
    gzip --decompress --stdout \
        $AC_CHECK_ICU_COMPRESSED_FILE > $M4_AC_CHECK_ICU_FILE
}

run_aclocal () {
    if test -x "`which aclocal || true`"; then
        echo "Running aclocal"
        `which aclocal` -I m4
    else
        echo "Can't find aclocal"
        exit $SCRIPT_ERROR
    fi
}

run_libtoolize () {
    if test -x "`which libtoolize || true`"; then
        echo "Running libtoolize"
        `which libtoolize` -f -c
    else
        if test -x "`which glibtoolize || true`"; then
            echo "Running glibtoolize"
            `which glibtoolize` -f -c
        else
            echo "Can't find libtoolize or glibtoolize"
            exit $SCRIPT_ERROR
        fi
    fi
}

run_autoheader () {
    if test -x "`which autoheader || true`"; then
        echo "Running autoheader"
        `which autoheader` -f
    else
        echo "Can't find autoheader"
        exit $SCRIPT_ERROR
    fi
}

run_automake () {
    AUTOMAKE_OPTION_COLLECTION=""
    if test -x "`which automake || true`"; then
        echo "Running automake"
        `which automake` -f -c -a --gnits
    else
        echo "Can't find automake"
        exit $SCRIPT_ERROR
    fi
}

run_autoconf () {
    if test -x "`which autoconf || true`"; then
        echo "Running autoconf"
        `which autoconf` -f
    else
        echo "Can't find autoconf"
        exit $SCRIPT_ERROR
    fi
}

run_command_collection () {
    run_libtoolize
    run_aclocal
    run_autoheader
    run_automake
    run_autoconf
    cat << EOF

You have bootstrapped Apache CouchDB, time to relax.

Run \`./configure' to configure the source before you install.
EOF
}

parse_script_option_list () {
    set +e
    options=`getopt hVC $@`
    if test ! $? -eq 0; then
        display_error
    fi
    set -e
    eval set -- $options
    while [ $# -gt 0 ]; do
        case "$1" in
            -h) shift; display_help; exit $SCRIPT_OK;;
            -V) shift; display_version; exit $SCRIPT_OK;;
            --) shift; break;;
            *) display_error "Unknown option: $1" >&2;;
        esac
    done
    cd `dirname $0`
    process_file_collection
    generate_acinclude
    run_command_collection
}

parse_script_option_list $@