#!/bin/sh -e

# Bootstrap the pristine source ready for distribution and deployment.

SCRIPT_OK=0
SCRIPT_ERROR=1

ACINCLUDE_FILE="acinclude.m4"
ACINCLUDE_IN_FILE="acinclude.m4.in"
ACINCLUDE_TMP_FILE="acinclude.m4.tmp"
AUTHORS_FILE="authors.xml"
BUILD_AUX_DIRECTORY="build-aux"
CONFIG_GUESS_FILE="build-aux/config.guess"
CONFIG_SUB_FILE="build-aux/config.sub"

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`

Copyright (c) 2008 Hunter Morris <huntermorris@gmail.com>

Permission to use, copy, modify, and distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.

THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

EOF
}

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

The $basename script bootstraps the pristine 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

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 "$REVISION"; then
        REVISION=""
    fi
    if test -z "`get LOCAL_VERSION_STAGE`" -o -z "$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
}

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 erlang-bcrypt.

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 $@