#!/bin/sh
#
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements.  See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership.  The ASF licenses this file
# to you 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.
#
#
#
# get-deps.sh -- download the dependencies useful for building Subversion
#

# If changing this file please take care to try to make your changes as
# portable as possible.  That means at a minimum only use POSIX supported
# features and functions.  However, it may be desirable to use an even
# more narrow set of features than POSIX, e.g. Solaris /bin/sh only has
# a subset of the POSIX shell features.  If in doubt, limit yourself to
# features already used in the file.  Reviewing the history of changes
# may be useful as well.

setglobal APR_VERSION = $(APR_VERSION:-"1.4.6")
setglobal APU_VERSION = $(APU_VERSION:-"1.5.1")
setglobal SERF_VERSION = $(SERF_VERSION:-"1.3.8")
setglobal ZLIB_VERSION = $(ZLIB_VERSION:-"1.2.8")
setglobal SQLITE_VERSION = $(SQLITE_VERSION:-"3.7.15.1")
setglobal GMOCK_VERSION = $(GMOCK_VERSION:-"1.6.0")
setglobal HTTPD_VERSION = $(HTTPD_VERSION:-"2.4.10")
setglobal APR_ICONV_VERSION = $(APR_ICONV_VERSION:-"1.2.1")

setglobal APR = "apr-$(APR_VERSION)"
setglobal APR_UTIL = "apr-util-$(APU_VERSION)"
setglobal SERF = "serf-$(SERF_VERSION)"
setglobal ZLIB = "zlib-$(ZLIB_VERSION)"
setglobal SQLITE_VERSION_LIST = $[echo $SQLITE_VERSION | sed -e 's/\./ /g]
setglobal SQLITE = "sqlite-amalgamation-$[printf %d%02d%02d%02d $SQLITE_VERSION_LIST]"
setglobal GMOCK = "gmock-$(GMOCK_VERSION)"
setglobal GMOCK_URL = 'https://googlemock.googlecode.com/files/'

setglobal HTTPD = "httpd-$(HTTPD_VERSION)"
setglobal APR_ICONV = "apr-iconv-$(APR_ICONV_VERSION)"

setglobal BASEDIR = $[pwd]
setglobal TEMPDIR = "$BASEDIR/temp"

setglobal HTTP_FETCH = ''
test -z $HTTP_FETCH && type wget  >/dev/null !2 > !1 && setglobal HTTP_FETCH = '"wget -q -nc'"
test -z $HTTP_FETCH && type curl  >/dev/null !2 > !1 && setglobal HTTP_FETCH = '"curl -sOL'"
test -z $HTTP_FETCH && type fetch >/dev/null !2 > !1 && setglobal HTTP_FETCH = '"fetch -q'"

# Need this uncommented if any of the specific versions of the ASF tarballs to
# be downloaded are no longer available on the general mirrors.
setglobal APACHE_MIRROR = 'http://archive.apache.org/dist'

# helpers
proc usage {
    echo "Usage: $0"
    echo "Usage: $0 [ apr | serf | zlib | sqlite | gmock ] ..."
    exit $1
}

# getters
proc get_apr {
    cd $TEMPDIR
    test -d $BASEDIR/apr      || $HTTP_FETCH $APACHE_MIRROR/apr/$APR.tar.bz2
    test -d $BASEDIR/apr-util || $HTTP_FETCH $APACHE_MIRROR/apr/$APR_UTIL.tar.bz2
    cd $BASEDIR

    test -d $BASEDIR/apr      || bzip2 -dc $TEMPDIR/$APR.tar.bz2 | tar -xf -
    test -d $BASEDIR/apr-util || bzip2 -dc $TEMPDIR/$APR_UTIL.tar.bz2 | tar -xf -

    test -d $BASEDIR/apr      || mv $APR apr
    test -d $BASEDIR/apr-util || mv $APR_UTIL apr-util
}

proc get_serf {
    test -d $BASEDIR/serf && return

    cd $TEMPDIR
    $HTTP_FETCH https://archive.apache.org/dist/serf/$SERF.tar.bz2
    cd $BASEDIR

    bzip2 -dc $TEMPDIR/$SERF.tar.bz2 | tar -xf -

    mv $SERF serf
}

proc get_zlib {
    test -d $BASEDIR/zlib && return

    cd $TEMPDIR
    $HTTP_FETCH http://sourceforge.net/projects/libpng/files/zlib/$ZLIB_VERSION/$ZLIB.tar.gz
    cd $BASEDIR

    gzip -dc $TEMPDIR/$ZLIB.tar.gz | tar -xf -

    mv $ZLIB zlib
}

proc get_sqlite {
    test -d $BASEDIR/sqlite-amalgamation && return

    cd $TEMPDIR
    $HTTP_FETCH http://www.sqlite.org/$SQLITE.zip
    cd $BASEDIR

    unzip -q $TEMPDIR/$SQLITE.zip

    mv $SQLITE sqlite-amalgamation

}

proc get_gmock {
    test -d $BASEDIR/gmock-fused && return

    cd $TEMPDIR
    $HTTP_FETCH $(GMOCK_URL)/$(GMOCK).zip
    cd $BASEDIR

    unzip -q $TEMPDIR/$GMOCK.zip

    mv $GMOCK/fused-src gmock-fused
    rm -fr $GMOCK
}

# main()
proc get_deps {
    mkdir -p $TEMPDIR

    for i in [zlib serf sqlite-amalgamation apr apr-util gmock-fused] {
      if test -d $i {
        echo "Local directory '$i' already exists; the downloaded copy won't be used" > !2
      }
    }

    if test $Argc -gt 0 {
      for target in [@Argv] {
        if test $target != "deps" {
          get_$target || usage
        } else {
          usage
        }
      }
    } else {
      get_apr
      get_serf
      get_zlib
      get_sqlite

      echo
      echo "If you require mod_dav_svn, the recommended version of httpd is:"
      echo "   $APACHE_MIRROR/httpd/$HTTPD.tar.bz2"

      echo
      echo "If you require apr-iconv, its recommended version is:"
      echo "   $APACHE_MIRROR/apr/$APR_ICONV.tar.bz2"
    }

    rm -rf $TEMPDIR
}

get_deps @Argv