#

# Copyright (c) 2011, 2012, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

AC_DEFUN([BDEPS_SCAN_FOR_BUILDDEPS],

[

    define(LIST_OF_BUILD_DEPENDENCIES,)

    if test "x$with_builddeps_server" != x || test "x$with_builddeps_conf" != x; then

        if test "x$with_builddeps_conf" != x; then

            AC_MSG_CHECKING([for supplied builddeps configuration file])

            builddepsfile=$with_builddeps_conf        

            if test -s $builddepsfile; then

                . $builddepsfile

                AC_MSG_RESULT([loaded!])

            else

               AC_ERROR([The given builddeps conf file $with_builddeps_conf could not be loaded!])

           fi

        else

            AC_MSG_CHECKING([for builddeps.conf files in sources...])

            builddepsfile=`mktemp`

            touch $builddepsfile

            # Put all found confs into a single file.

            find ${SRC_ROOT} -name builddeps.conf -exec cat \{\} \; >> $builddepsfile

            # Source the file to acquire the variables

            if test -s $builddepsfile; then

                . $builddepsfile

                AC_MSG_RESULT([found at least one!])

            else

               AC_ERROR([Could not find any builddeps.conf at all!])

           fi

        fi

        # Create build and host names that use _ instead of "-" and ".".

        # This is necessary to use them in variable names.

        build_var=`echo ${build} | tr '-' '_' | tr '.' '_'`

        host_var=`echo ${host} | tr '-' '_' | tr '.' '_'`

        # Extract rewrite information for build and host

        eval rewritten_build=\${REWRITE_${build_var}}

        if test "x$rewritten_build" = x; then

            rewritten_build=${build}

            echo Build stays the same $rewritten_build

        else

            echo Rewriting build for builddeps into $rewritten_build

        fi

        eval rewritten_host=\${REWRITE_${host_var}}

        if test "x$rewritten_host" = x; then

            rewritten_host=${host}

            echo Host stays the same $rewritten_host

        else

            echo Rewriting host for builddeps into $rewritten_host

        fi

        rewritten_build_var=`echo ${rewritten_build} | tr '-' '_' | tr '.' '_'`

        rewritten_host_var=`echo ${rewritten_host} | tr '-' '_' | tr '.' '_'`        

    fi

    AC_CHECK_PROGS(BDEPS_UNZIP, [7z unzip])

    if test "x$BDEPS_UNZIP" = x7z; then

        BDEPS_UNZIP="7z x"

    fi

    AC_CHECK_PROGS(BDEPS_FTP, [wget lftp ftp]) 

])

AC_DEFUN([BDEPS_FTPGET],

[

    # $1 is the ftp://abuilddeps.server.com/libs/cups.zip

    # $2 is the local file name for the downloaded file.

    VALID_TOOL=no

    if test "x$BDEPS_FTP" = xwget; then

       VALID_TOOL=yes

       wget -O $2 $1

    fi

    if test "x$BDEPS_FTP" = xlftp; then

       VALID_TOOL=yes

       lftp -c "get $1 -o $2"

    fi

    if test "x$BDEPS_FTP" = xftp; then

        VALID_TOOL=yes

        FTPSERVER=`echo $1 | cut -f 3 -d '/'`

        FTPPATH=`echo $1 | cut -f 4- -d '/'`

        FTPUSERPWD=${FTPSERVER%%@*}

        if test "x$FTPSERVER" != "x$FTPUSERPWD"; then

            FTPUSER=${userpwd%%:*}

            FTPPWD=${userpwd#*@}

            FTPSERVER=${FTPSERVER#*@}

        else

            FTPUSER=ftp

            FTPPWD=ftp

        fi

        # the "pass" command does not work on some

        # ftp clients (read ftp.exe) but if it works,

        # passive mode is better!

        (\

            echo "user $FTPUSER $FTPPWD"        ;\

            echo "pass"                         ;\

            echo "bin"                          ;\

            echo "get $FTPPATH $2"              ;\

        ) | ftp -in $FTPSERVER

    fi

    if test "x$VALID_TOOL" != xyes; then

       AC_ERROR([I do not know how to use the tool: $BDEPS_FTP])

    fi

])

AC_DEFUN([BDEPS_CHECK_MODULE],

[

    define([LIST_OF_BUILD_DEPENDENCIES],LIST_OF_BUILD_DEPENDENCIES[$2=$3'\n'])

    if test "x$with_builddeps_server" != x || test "x$with_builddeps_conf" != x; then

        # Source the builddeps file again, to make sure it uses the latest variables!

        . $builddepsfile

        # Look for a host and build machine specific resource!

        eval resource=\${builddep_$2_BUILD_${rewritten_build_var}_HOST_${rewritten_host_var}}

        if test "x$resource" = x; then

            # Ok, lets instead look for a host specific resource

            eval resource=\${builddep_$2_HOST_${rewritten_host_var}}

        fi

        if test "x$resource" = x; then

            # Ok, lets instead look for a build specific resource

            eval resource=\${builddep_$2_BUILD_${rewritten_build_var}}

        fi

        if test "x$resource" = x; then

            # Ok, lets instead look for a generic resource

            # (The $2 comes from M4 and not the shell, thus no need for eval here.)

            resource=${builddep_$2}

        fi

        if test "x$resource" != x; then

            AC_MSG_NOTICE([Using builddeps $resource for $2])

	    # If the resource in the builddeps.conf file is an existing directory,

	    # for example /java/linux/cups

	    if test -d ${resource}; then

	       depdir=${resource}

	    else

		BDEPS_FETCH($2, $resource, $with_builddeps_server, $with_builddeps_dir, depdir)

	    fi

            # Source the builddeps file again, because in the previous command, the depdir

            # was updated to point at the current build dependency install directory.

            . $builddepsfile

            # Now extract variables from the builddeps.conf files.

            theroot=${builddep_$2_ROOT}

            thecflags=${builddep_$2_CFLAGS}

            thelibs=${builddep_$2_LIBS}

            if test "x$depdir" = x; then

                AC_ERROR([Could not download build dependency $2])

            fi

            $1=$depdir

            if test "x$theroot" != x; then

               $1="$theroot"

            fi

            if test "x$thecflags" != x; then

               $1_CFLAGS="$thecflags"

            fi

            if test "x$thelibs" != x; then

               $1_LIBS="$thelibs"

            fi

            m4_default([$4], [:])

            m4_ifvaln([$5], [else $5])

        fi

        m4_ifvaln([$5], [else $5])

    fi

])

AC_DEFUN([BDEPS_FETCH],

[

# $1 is for example mymodule

# $2 is for example libs/general/libmymod_1_2_3.zip

# $3 is for example ftp://mybuilddeps.myserver.com/builddeps

# $4 is for example /localhome/builddeps

# $5 is the name of the variable into which we store the depdir, eg MYMOD

# Will download ftp://mybuilddeps.myserver.com/builddeps/libs/general/libmymod_1_2_3.zip and

# unzip into the directory: /localhome/builddeps/libmymod_1_2_3

    filename=`basename $2`

    filebase=`echo $filename | sed 's/\.[[^\.]]*$//'`

    filebase=${filename%%.*}

    extension=${filename#*.}

    installdir=$4/$filebase

    if test ! -f $installdir/$filename.unpacked; then

        AC_MSG_NOTICE([Downloading build dependency $1 from $3/$2 and installing into $installdir])

        if test ! -d $installdir; then

            mkdir -p $installdir

        fi

        if test ! -d $installdir; then

            AC_ERROR([Could not create directory $installdir])

        fi

        tmpfile=`mktemp $installdir/$1.XXXXXXXXX`

        touch $tmpfile    

        if test ! -f $tmpfile; then

            AC_ERROR([Could not create files in directory $installdir])

        fi

        BDEPS_FTPGET([$3/$2] , [$tmpfile])

        mv $tmpfile $installdir/$filename

        if test ! -s $installdir/$filename; then 

            AC_ERROR([Could not download $3/$2])

        fi

        case "$extension" in

            zip)  echo "Unzipping $installdir/$filename..."

               (cd $installdir ; rm -f $installdir/$filename.unpacked ; $BDEPS_UNZIP $installdir/$filename > /dev/null && touch $installdir/$filename.unpacked)

            ;;

            tar.gz) echo "Untaring $installdir/$filename..."

               (cd $installdir ; rm -f $installdir/$filename.unpacked ; tar xzf $installdir/$filename && touch $installdir/$filename.unpacked)

            ;;

            tgz) echo "Untaring $installdir/$filename..."

               (cd $installdir ; rm -f $installdir/$filename.unpacked ; tar xzf $installdir/$filename && touch $installdir/$filename.unpacked)

            ;;

            *) AC_ERROR([Cannot handle build depency archive with extension $extension])

            ;;

        esac

    fi

    if test -f $installdir/$filename.unpacked; then

        $5=$installdir

    fi

])