#----------------------------------------------------------------------------
# /var/install/include/packagelib - library for eisfair scripts
#
# Copyright (c) 2006 the eisfair team, c/o Frank Meyer, frank(at)eisfair(dot)org
#
# Creation   : 2005-11-29  jed
# Last Update: $Id$
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------

#----------------------------------------------------------------------------
# interface description
#----------------------------------------------------------------------------
# parse_infofile() : parse infofile content and make it available via
#                    environment variables, e.g.
#                    parse_infofile mailquota MQ
#
# strip_extension(): strip extension from given variable, e.g.
#                    strip_extension _PACKAGE_REQUIRE_PACKAGE_2_NAME .tar
#----------------------------------------------------------------------------

#============================================================================
# only include this file once
#============================================================================
if [ "$_PACKAGELIB" != "true" ]
then
    _PACKAGELIB='true'

    # sub normalize_version
    # =====================
    # reads the version of the package and normalizes the value (to provide
    # compatibility to older versions).

    normalize_version ()
    {
       case "$1"
       in
         1.0beta)              echo "0.90.0";;
         1.0beta-patch-[0-9]*) echo "$1" | sed -e 's#^1.0beta-patch-\([0-9]*\)#0.90.\1#';;
         [0-9]*.[0-9]*.[0-9]*) echo "$1" | sed -e 's#^\([0-9]*\)[^0-9]*\.\([0-9]*\)[^0-9]*\.\([0-9]*\).*#\1.\2.\3#';;
         [0-9]*.[0-9]*)        echo "$1" | sed -e 's#^\([0-9]*\)[^0-9]*\.\([0-9]*\).*#\1.\2.0#';;
         *)                    echo "0.0.0" ;;
       esac
    }

    # parse_infofile
    # ==============
    # parameters: $1 name of infofile in /var/install/package
    #             $2 [variable_prefix]
    #                e.g. if "variable_prefix" has been set to FOO the variables
    #                will be prefixed as FOO_PACKAGE_NAME.
    #
    # output    : list of variables in alphabetic order:
    #             _PACKAGE_AUTHOR
    #             _PACKAGE_DATE
    #             _PACKAGE_DESCRIPTION
    #             _PACKAGE_NAME
    #             _PACKAGE_REQUIRE_N
    #             _PACKAGE_REQUIRE_1_PACKAGE ...
    #             _PACKAGE_REQUIRE_LIB_N
    #             _PACKAGE_REQUIRE_LIB_1_PACKAGE ...
    #             _PACKAGE_REQUIRE_LIB_1_VERSION ...
    #             _PACKAGE_REQUIRE_PACKAGE_N
    #             _PACKAGE_REQUIRE_PACKAGE_1_PACKAGE ...
    #             _PACKAGE_REQUIRE_PACKAGE_1_VERSION ...
    #             _PACKAGE_SECTION
    #             _PACKAGE_SHA1SUM
    #             _PACKAGE_SHORT
    #             _PACKAGE_STATUS
    #             _PACKAGE_SUB_PACKAGE_N
    #             _PACKAGE_SUB_PACKAGE_1_PACKAGE ...
    #             _PACKAGE_SUB_PACKAGE_1_PARAM ...
    #             _PACKAGE_VERSION

    parse_infofile ()
    {
       if [ $# -eq 0 ]
       then
           echo "Usage: parse_infofile infofile [variable-prefix]"
       else
           # complete path of infofile
           if [ -f "$1" ]
           then
               _packagelib_infofile="$1"
           elif [ -f "/var/install/packages/$1" ]
           then
               _packagelib_infofile="/var/install/packages/$1"
           else
               mecho -error "The infofile '$1' could not be found!"
               return 1
           fi

           if [ "$2" != "" ]
           then
               _packagelib_var_prefix="$2"
           else
               _packagelib_var_prefix=''
           fi

           # clear old values
           eval "${_packagelib_var_prefix}_PACKAGE_AUTHOR"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_DATE"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_DESCRIPTION"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_NAME"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_REQUIRE_N"=0
           eval "${_packagelib_var_prefix}_PACKAGE_REQUIRE_1_PACKAGE"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_REQUIRE_LIB_N"=0
           eval "${_packagelib_var_prefix}_PACKAGE_REQUIRE_LIB_1_PACKAGE"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_REQUIRE_LIB_1_VERSION"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_REQUIRE_PACKAGE_N"=0
           eval "${_packagelib_var_prefix}_PACKAGE_REQUIRE_PACKAGE_1_PACKAGE"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_REQUIRE_PACKAGE_1_VERSION"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_SECTION"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_SHA1SUM"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_SHORT"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_STATUS"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_SUB_PACKAGE_N"=0
           eval "${_packagelib_var_prefix}_PACKAGE_SUB_PACKAGE_1_PACKAGE"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_SUB_PACKAGE_1_PARAM"=\'\'
           eval "${_packagelib_var_prefix}_PACKAGE_VERSION"=\'\'

           while read _packagelib_line
           do
             case "${_packagelib_line}"
             in

               "<author>"*)
                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*author>[[:space:]]*##g'`"
                        export ${_packagelib_var_prefix}_PACKAGE_AUTHOR="${_packagelib_value}"
                        ;;

               "<date>"*)
                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*date>[[:space:]]*##g'`"
                        export ${_packagelib_var_prefix}_PACKAGE_DATE="${_packagelib_value}"
                        ;;

               "<description>"*"</description>")
                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*description>[[:space:]]*##g'`"
                        export ${_packagelib_var_prefix}_PACKAGE_DESCRIPTION="${_packagelib_value}"
                        ;;

               "<description>"*)
                        _packagelib_value="`sed -e '1,/<description>/d' -e '/<\/description>/,//d' $_packagelib_infofile`"
                        export ${_packagelib_var_prefix}_PACKAGE_DESCRIPTION="${_packagelib_value}"
                        ;;

               "<name>"*)
                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*name>[[:space:]]*##g'`"
                        export ${_packagelib_var_prefix}_PACKAGE_NAME="${_packagelib_value}"
                        ;;

               "<package>"*)
                        eval _packagelib_value='$'"${_packagelib_var_prefix}_PACKAGE_NAME"
                        if [ "$_packagelib_value" = "" ]
                        then
                            _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*package>[[:space:]]*##g'`"
                            export ${_packagelib_var_prefix}_PACKAGE_NAME="${_packagelib_value}"
                        fi
                        ;;

               "<require>"*)
                        eval _packagelib_idx='$'"${_packagelib_var_prefix}_PACKAGE_REQUIRE_N"
                        _packagelib_idx=`/usr/bin/expr ${_packagelib_idx} + 1`
                        export ${_packagelib_var_prefix}_PACKAGE_REQUIRE_N="${_packagelib_idx}"

                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*require>[[:space:]]*##g'`"
                        export ${_packagelib_var_prefix}_PACKAGE_REQUIRE_${_packagelib_idx}_PACKAGE="${_packagelib_value}"
                        ;;

               "<require-lib>"*)
                        eval _packagelib_idx='$'"${_packagelib_var_prefix}_PACKAGE_REQUIRE_LIB_N"
                        _packagelib_idx=`/usr/bin/expr ${_packagelib_idx} + 1`
                        export ${_packagelib_var_prefix}_PACKAGE_REQUIRE_LIB_N="${_packagelib_idx}"

                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*require-lib>[[:space:]]*##g;s#[[:space:]].*##'`"
                        export ${_packagelib_var_prefix}_PACKAGE_REQUIRE_LIB_${_packagelib_idx}_PACKAGE="${_packagelib_value}"

                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*require-lib>[[:space:]]*##g;s#.*[[:space:]]##'`"
                        export ${_packagelib_var_prefix}_PACKAGE_REQUIRE_LIB_${_packagelib_idx}_VERSION="${_packagelib_value}"
                        ;;

               "<require-package>"*)
                        eval _packagelib_idx='$'"${_packagelib_var_prefix}_PACKAGE_REQUIRE_PACKAGE_N"
                        _packagelib_idx=`/usr/bin/expr ${_packagelib_idx} + 1`
                        export ${_packagelib_var_prefix}_PACKAGE_REQUIRE_PACKAGE_N="${_packagelib_idx}"

                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*require-package>[[:space:]]*##g;s#[[:space:]].*##'`"
                        export ${_packagelib_var_prefix}_PACKAGE_REQUIRE_PACKAGE_${_packagelib_idx}_PACKAGE="${_packagelib_value}"

                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*require-package>[[:space:]]*##g;s#.*[[:space:]]##'`"
                        export ${_packagelib_var_prefix}_PACKAGE_REQUIRE_PACKAGE_${_packagelib_idx}_VERSION="${_packagelib_value}"
                        ;;

               "<section>"*)
                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*section>[[:space:]]*##g'`"
                        export ${_packagelib_var_prefix}_PACKAGE_SECTION="${_packagelib_value}"
                        ;;

               "<sha1sum>"*)
                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*sha1sum>[[:space:]]*##g'`"
                        export ${_packagelib_var_prefix}_PACKAGE_SHA1SUM="${_packagelib_value}"
                        ;;

               "<short>"*)
                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*short>[[:space:]]*##g'`"
                        export ${_packagelib_var_prefix}_PACKAGE_SHORT="${_packagelib_value}"
                        ;;

               "<status>"*)
                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*status>[[:space:]]*##g'`"
                        export ${_packagelib_var_prefix}_PACKAGE_STATUS="${_packagelib_value}"
                        ;;

               "<sub-package>"*)
                        eval _packagelib_idx='$'"${_packagelib_var_prefix}_PACKAGE_SUB_PACKAGE_N"
                        _packagelib_idx=`/usr/bin/expr ${_packagelib_idx} + 1`
                        export ${_packagelib_var_prefix}_PACKAGE_SUB_PACKAGE_N="${_packagelib_idx}"

                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*sub-package>[[:space:]]*##g;s#[[:space:]].*##'`"
                        export ${_packagelib_var_prefix}_PACKAGE_SUB_PACKAGE_${_packagelib_idx}_PACKAGE="${_packagelib_value}"

                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*sub-package>[[:space:]]*##g;s#.*[[:space:]]##'`"
                        export ${_packagelib_var_prefix}_PACKAGE_SUB_PACKAGE_${_packagelib_idx}_PARAM="${_packagelib_value}"
                        ;;

               "<version>"*)
                        _packagelib_value="`echo "${_packagelib_line}" | sed -e 's#[[:space:]]*</*version>[[:space:]]*##g'`"
                        _packagelib_value=`normalize_version "${_packagelib_value}"`
                        export ${_packagelib_var_prefix}_PACKAGE_VERSION="${_packagelib_value}"
                        ;;

               *)
                        ;;
             esac
           done < $_packagelib_infofile

           unset _packagelib_idx _packagelib_value _packagelib_infofile
       fi

       return 0
    }

    # strip_extension
    # ===============
    # parameters: $1 name of variable
    #             $2 name of extension
    #
    # output    : modified variable

    strip_extension ()
    {
       _packagelib_var_name="${1}"
       _packagelib_var_ext="$2"

       eval _packagelib_var_tmp="\$$_packagelib_var_name"
       echo "$_packagelib_var_tmp" | grep -q "$_packagelib_var_ext"

       if  [ $? -eq 0 ]
       then
           eval $_packagelib_var_name=\"`echo "$_packagelib_var_tmp" | sed "s/${_packagelib_var_ext}.*//g"`\"
       fi
    }

fi

#============================================================================
# end
#============================================================================