# *******************************************************************
# **  @file /var/install/include/eismanlib - common routines for eisman
# **
# **  Creation:     2013-01-13 dv
# **  Last update:  $Id$
# **
# **  Copyright (c) 2013-@@YEAR@@ the eisfair team, team(at)eisfair(dot)org
# **
# **  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.
# *******************************************************************

# header width in characters within package database
FIELDHEADER="11"

# *******************************************************************
# **  wait animation
# **  @param  $1  wait text
# **  @return n/a
# *******************************************************************

show_wait()
{
    local length="$((${#1} + 4))"
    local state=0

    echo -n  "[ ] ${1}"
    echo -en "\033[${length}D"

    while [ -n "`ps --no-headers $!`" ]
    do
        case "${state}" in
        0)
            echo -en "[/\033[2D"
            state=1
            ;;
        1)
            echo -en "[-\033[2D"
            state=2
            ;;
        2)
            echo -n "[\\"
            echo -en "\033[2D"
            state=3
            ;;
        *)
            echo -en "[|\033[2D"
            state=0
            ;;
        esac

        usleep 100000
    done
    echo -n "                                                  "
    echo -en "\033[50D"
}


# *******************************************************************
# **  split a version string into it's parts
# **  @param  $1  version string
# **  @return $major, $minor and $revision $cvs $cvs_time
# *******************************************************************

split_version()
{
    v=${1}
    cvs=''
    svn=''
    cvs_time=''

    case ${v} in
        1.0beta)
            v=0.90.0
            ;;
        1.0beta-patch-*)
            IFS='-'
            set -- ${v}
            unset IFS
            v=0.90.${3}
            ;;
        *cvs*|*svn*)
            svn=`echo "${v}" | sed 's/^.*[cvs|svn]//'`
            v=`echo "${v}" | sed 's/[cvs|svn].*$//'`

            case "${svn}" in
                *:*)
                    # this is for the svn_short tag MM-DDhh:mm
                    # it comes with mktarball.sh -hometest
                    cvs="$(date +%Y)-"$(echo "${svn}" | cut -c-5)
                    cvs_time=$(echo "${svn}" | cut -c6-)
                    ;;
                *)
                    cvs=${svn}
                    ;;
            esac
            ;;
    esac

    case "${v}" in
        [0-9]*.[0-9]*.[0-9]*)
            IFS='.'
            set -- ${v}
            unset IFS
            major=${1}
            minor=${2}
            revision=${3}
            ;;
        [0-9]*.[0-9]*)
            IFS='.'
            set -- ${v}
            unset IFS
            major=${1}
            minor=${2}
            revision=0
            ;;
        *)
            major=0
            minor=0
            revision=0
            ;;
    esac
}


# *******************************************************************
# **  diff_version compares two version strings and outputs the result
# **  to stdout
# **  If version2 is more recent than version1, the function outputs
# **  the result "new"
# **  If version2 is equal to version1, the function outputs
# **  the result "installed"
# **  If version2 is older than version1, the function outputs
# **  the result "old"
# **  @param  $1  version string 1
# **  @param  $2  version string 2
# **  @return "new", "installed" or "old" on stdout
# *******************************************************************

diff_version()
{
    local new_status="new"
    local old_status="old"
    local inst_status="installed"

    vv1=${1}
    vv2=${2}

    split_version ${vv1}
    vv1_major=${major}
    vv1_minor=${minor}
    vv1_revision=${revision}
    vv1_cvs=${cvs}
    vv1_time=${cvs_time}

    split_version ${vv2}
    vv2_major=${major}
    vv2_minor=${minor}
    vv2_revision=${revision}
    vv2_cvs=${cvs}
    vv2_time=${cvs_time}

    ## first compare major version
    if [ ${vv1_major} -lt ${vv2_major} ]
    then
        diff_status=${old_status}
    elif [ ${vv1_major} -gt ${vv2_major} ]
    then
        diff_status=${new_status}

    ## next try minor version
    elif [ ${vv1_minor} -lt ${vv2_minor} ]
    then
        diff_status=${old_status}
    elif [ ${vv1_minor} -gt ${vv2_minor} ]
    then
        diff_status=${new_status}

    ## last try revision
    elif [ ${vv1_revision} -lt ${vv2_revision} ]
    then
        diff_status=${old_status}
    elif [ ${vv1_revision} -gt ${vv2_revision} ]
    then
        diff_status=${new_status}

    ## if all is equal, look if a package has a cvs version
    elif [ "${vv1_cvs}" = "" -a "${vv2_cvs}" = "" ]
    then
        diff_status=${inst_status}

    ## cvs versions always equals matching non-cvs versions
    elif [ "${vv1_cvs}" = "" -a "${vv2_cvs}" != "" ]
    then
        diff_status=${new_status}
    elif [ "${vv1_cvs}" != "" -a "${vv2_cvs}" = "" ]
    then
        diff_status=${old_status}

    ## now compare the cvs date
    elif [ `/usr/bin/expr "${vv1_cvs}" \< "${vv2_cvs}"` = "1" ]
    then
        diff_status=${old_status}

    elif [ `/usr/bin/expr "${vv1_cvs}" \> "${vv2_cvs}"` = "1" ]
    then
        diff_status=${new_status}

    ## if all is equal, look if a package has a cvs time
    elif [ "${vv1_time}" = "" -a "${vv2_time}" = "" ]
    then
        diff_status=${inst_status}

    ## cvs time always equals matching non-cvs time
    elif [ "${vv1_time}" = "" -a "${vv2_time}" != "" ]
    then
        diff_status=${new_status}

    elif [ "${vv1_time}" != "" -a "${vv2_time}" = "" ]
    then
        diff_status=${old_status}

    ## now compare the cvs time
    elif [ `/usr/bin/expr "${vv1_time}" \< "${vv2_time}"` = "1" ]
    then
        diff_status=${old_status}

    elif [ `/usr/bin/expr "${vv1_time}" \> "${vv2_time}"` = "1" ]
    then
        diff_status=${new_status}

    ## now difference was found
    else
        diff_status=${inst_status}
    fi

    echo "${diff_status}"
}


# *******************************************************************
# **  strip filename and php call parameters from url, so that only the
# **  static part remains.
# **  @param  $1  full qualified URL to a package resource
# **  @return static part of the URL without file name
# *******************************************************************

get_base_url()
{
    local url="${1}"

    if [ -n "${url}" ]
    then
        echo "${url}"        |
            cut -d '?' -f 1  |
            xargs dirname    |
            sed -e 's|/[0-9]*$||'
    fi
}