#!/bin/sh
# (c) Copyright 2001-2012. CodeWeavers, Inc.

kde_on=0
kde_version=""
kde_user_menu=""
kde_user_alt_menu=""
kde_user_mime=""
kde_global_menu=""
kde_global_alt_menu=""
kde_global_mime=""
kde_preferred_menu=""
kde_preferred_alt_menu=""
kde_preferred_mime=""
kde_mime_path=""

xdg_menu_on=0
xdg_user_data=""
xdg_global_data=""
xdg_preferred_data=""
xdg_data_dirs=""

xdg_mime_on=0

dtop_on=0
dtop_user_desktop=""
dtop_user_alt_desktop=""
dtop_global_desktop=""
dtop_global_alt_desktop=""
dtop_preferred_desktop=""
dtop_preferred_alt_desktop=""

debian_menu_on=0
debian_user_menu=""
debian_global_menu=""
debian_old_global_menu=""
debian_preferred_menu=""
debian_old_preferred_menu=""

debian_mime_on=0
debian_global_assoc=""
debian_preferred_assoc=""

cde_on=0
cde_user_dt=""
cde_user_wm=""
cde_global_dt=""
cde_global_wm=""
cde_preferred_dt=""
cde_preferred_wm=""

macosx_on=0

mailcap_on=0
mailcap_user_mailcap=""
mailcap_user_mime=""
mailcap_global_mailcap=""
mailcap_global_mime=""
mailcap_preferred_mailcap=""
mailcap_preferred_mime=""

desktop_assoc_ignore_list=""
desktop_menu_ignore_list=""

# Directories where to look for KDE.
kde_global_dirs="/usr /opt/kde4 /opt/kde3 /opt/kde2 /opt/kde /usr/kde/4 /usr/kde/3 /usr/kde"
kde_user_dirs="$HOME/.kde $HOME/.kde4 $HOME/.kde3 $HOME/.kde2"


# ----- Options ------

# Portable which(1) implementation
cxwhich()
{
    case "$1" in
    /*)
        if [ -x "$1" -a -f "$1" ]
        then
            echo "$1"
            return 0
        fi
        ;; 
    */*)
        if [ -x "`pwd`/$1" -a -f "`pwd`/$1" ]
        then
            echo "`pwd`/$1"
            return 0
        fi
        ;;
    *)
        saved_ifs="$IFS"
        IFS=":"
        for d in $PATH
        do
            IFS="$saved_ifs"
            if [ -n "$d" -a -x "$d/$1" -a -f "$d/$1" ]
            then
                echo "$d/$1"
                return 0
            fi
        done
        ;;
    esac
    return 1
}


error()
{
    name0=`basename "$0"`
    echo "$name0:error: " "$@" >&2
}

usage=""
quiet=0
scope="private"
menu=0
assoc=0

while [ $# -gt 0 ]
do
    case "$1" in
    --quiet)
        quiet=1
        shift
        ;;
    --scope)
        scope="$2"
        shift 2
        ;;
    --menu)
        menu=1
        shift
        ;;
    --assoc)
        assoc=1
        shift
        ;;
    --help|-h|-\?)
        usage=0
        shift
        ;;
    *)
        error "unknown option '$1'"
        usage=2
        shift
        ;;
    esac
done

if [ $menu -eq 0 -a $assoc -eq 0 ]
then
    menu=1
    assoc=1
fi

if [ "$scope" != "managed" -a "$scope" != "private" ]
then
    error "unknown scope '$scope'"
    usage=2
fi

# Check that we can use $HOME and if not, unset it so buggy applications,
# like Ubuntu's kde-config, don't try to write to it
if [ -n "$HOME" ]
then
    if [ ! -d "$HOME" -o ! -w "$HOME" ]
    then
        unset HOME
    elif perl -e 'exit(($> == 0 and !-o $ARGV[0]) ? 0 : 1)' "$HOME"
    then
        # Probably an 'su' that did not update $HOME
        unset HOME
    fi
fi

if [ "$scope" != "managed" -a -z "$HOME" ]
then
    error "\$HOME must be set correctly and be writable for --scope private"
    usage=2
fi

if [ -n "$usage" ]
then
    name0=`basename "$0"`
    if [ $usage -ne 0 ]
    then
        error "try '$name0 --help' for more information"
        exit $usage
    fi
    cat <<EOF
Usage: $name0 [--quiet] [--scope SCOPE] [--menu|--assoc]

Scans for menu and association systems and returns their locations.

Options:
  --quiet       Don't print the shell commands that set all the variables
  --scope SCOPE If set to 'managed' return the system wide locations as the
                preferred location, otherwise return the per-user location
  --menu        Only scan for menuing systems
  --assoc       Only scan for association systems
EOF
    exit 0
fi


# ----- KDE ------

safe_kde_config()
{
    decoy=""
    if [ -z "$HOME" ]
    then
        decoy="/tmp/decoy.$$"
        HOME="$decoy"
        touch "$decoy"
    fi
    "$KDE_CONFIG" "$@"
    rc=$?
    [ -z "$decoy" ] || rm "$decoy"
    return $rc
}

# kde-config is not in $PATH when installing an RPM package on SuSE
# And it is not in root's $PATH on Solaris
PATH="$PATH:/opt/kde3/bin:/opt/sfw/kde/bin"

KDE_CONFIG=""
cxwhich kde4-config >/dev/null && KDE_CONFIG="kde4-config"
cxwhich kde-config >/dev/null && KDE_CONFIG="kde-config"

# First try to use kde-config.
if [ -n "$KDE_CONFIG" ]
then
    kde_apps=`safe_kde_config --path apps 2>/dev/null`
    rc=$?
    kde_user_prefix=`safe_kde_config --localprefix 2>/dev/null`
    rc=`expr $rc + $?`
    kde_global_prefix=`safe_kde_config --prefix 2>/dev/null`
    rc=`expr $rc + $?`
    kde_user_config=`safe_kde_config --path config 2>/dev/null`
    rc=`expr $rc + $?`
    if [ $assoc -ne 0 ]
    then
        kde_mime_path=`safe_kde_config --path mime 2>/dev/null`
        rc=`expr $rc + $?`
        kde_mime_path=`echo "$kde_mime_path" | sed -e 's%/:%:%g' -e 's%/$%%'`
    fi

    if [ $rc -eq 0 -a -n "$kde_user_prefix" -a -n "$kde_global_prefix" ]
    then
        kde_on=1

        # Many kde-config commands return multiple paths so we have to pick
        # the right one (user/global).
        kde_user_config=`echo "$kde_user_config" | tr ':' '\n' | egrep "^$kde_user_prefix" | head -n 1`
        if [ -z "$kde_user_config" ]
        then
            # kde-config --localprefix is broken on Gentoo so that we don't
            # find any match. Use $HOME instead.
            kde_user_prefix="$HOME/.kde"
            kde_user_config=`echo "$kde_user_config" | tr ':' '\n' | egrep "^$kde_user_prefix" | head -n 1`
        fi

        # We need these for the KDE MIME types too
        kde_user_menu=`echo "$kde_apps" | tr ':' '\n' | egrep "^$kde_user_prefix" | sed -e '2,$ d' -e 's%/$%%'`
        kde_global_menu=`echo "$kde_apps" | tr ':' '\n' | egrep "^$kde_global_prefix" | sed -e '2,$ d' -e 's%/$%%'`

        if [ $assoc -ne 0 ]
        then
            kde_user_mime=""
            kde_local_mime=""
            kde_global_mime=""
            kde_other_mime=""
            original_ifs="$IFS"
            IFS=":"
            for dir in $kde_mime_path
            do
                IFS="$original_ifs"
                if [ -z "$kde_user_mime" ] && echo "$dir" | egrep "^$kde_user_prefix" >/dev/null
                then
                    kde_user_mime="$dir"
                elif [ -z "$kde_local_mime" ] && echo "$dir" | egrep "^/usr/local/" >/dev/null
                then
                    kde_local_mime="$dir"
                elif [ -z "$kde_global_mime" ] && echo "$dir" | egrep "^$kde_global_prefix" >/dev/null
                then
                    kde_global_mime="$dir"
                else
                    kde_other_mime="$dir"
                fi
            done
            if [ -z "$kde_global_mime" ]
            then
                if [ -n "$kde_local_mime" ]
                then
                    kde_global_mime="$kde_local_mime"
                else
                    kde_global_mime="$kde_other_mime"
                fi
            fi
        fi
    fi
fi

# kde-config isn't installed.
if [ $kde_on = 0 ]
then
    # So, try to find the global KDE directory.
    for dir in $kde_global_dirs
    do
        if [ -d "$dir/share/mimelnk" ]
        then
            kde_global_prefix="$dir"
            kde_on=1
            break
        fi
    done

    # We found KDE global directory.
    if [ $kde_on = 1 ]
    then
        # Try to find the user KDE dir.
        for dir in $kde_user_dirs
        do
            if [ -d "$dir/share/mimelnk" ]
            then
                kde_user_prefix="$dir"
                break
            fi
        done
        # If no KDE user dir found, use $HOME/.kde as default.
        if [ -z "$kde_user_prefix" ]
        then
            kde_user_prefix="$HOME/.kde"
        fi

        # We need these for the KDE MIME types too
        kde_user_menu="$kde_user_prefix/share/applnk"
        kde_global_menu="$kde_global_prefix/share/applnk"

        if [ $assoc -ne 0 ]
        then
            kde_user_mime="$kde_user_prefix/share/mimelnk"
            kde_global_mime="$kde_global_prefix/share/mimelnk"