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#!/bin/sh
#---------------------------------------------
#   xdg-desktop-menu
#
#   Utility script to install menu items on a Linux desktop.
#   Refer to the usage() function below for usage.
#
#   Copyright 2009-2010, Fathi Boudra <fabo@freedesktop.org>
#   Copyright 2009-2010, Rex Dieter <rdieter@fedoraproject.org>
#   Copyright 2006, Kevin Krammer <kevin.krammer@gmx.at>
#   Copyright 2006, Jeremy White <jwhite@codeweavers.com>
#
#   LICENSE:
#
#   Permission is hereby granted, free of charge, to any person obtaining a
#   copy of this software and associated documentation files (the "Software"),
#   to deal in the Software without restriction, including without limitation
#   the rights to use, copy, modify, merge, publish, distribute, sublicense,
#   and/or sell copies of the Software, and to permit persons to whom the
#   Software is furnished to do so, subject to the following conditions:
#
#   The above copyright notice and this permission notice shall be included
#   in all copies or substantial portions of the Software.
#
#   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
#   OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
#   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
#   THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
#   OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
#   ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
#   OTHER DEALINGS IN THE SOFTWARE.
#
#---------------------------------------------

manualpage()
{
cat << _MANUALPAGE
Name

   xdg-desktop-menu - command line tool for (un)installing desktop
   menu items

Synopsis

   xdg-desktop-menu install [--noupdate] [--novendor] [--mode
   mode] directory-file(s) desktop-file(s)

   xdg-desktop-menu uninstall [--noupdate] [--mode mode]
   directory-file(s) desktop-file(s)

   xdg-desktop-menu forceupdate [--mode mode]

   xdg-desktop-menu { --help | --manual | --version }

Description

   The xdg-desktop-menu program can be used to install new menu
   entries to the desktop's application menu.

   The application menu works according to the XDG Desktop Menu
   Specification at
   http://www.freedesktop.org/wiki/Specifications/menu-spec

Commands

   install
          Install one or more applications in a submenu of the
          desktop menu system.

          desktop-file: A desktop file represents a single menu
          entry in the menu. Desktop files are defined by the
          freedesktop.org Desktop Entry Specification. The most
          important aspects of *.desktop files are summarized
          below.

          Menu entries can be added to the menu system in two
          different ways. They can either be added to a predefined
          submenu in the menu system based on one or more category
          keywords, or they can be added to a new submenu.

          To add a menu entry to a predefined submenu the desktop
          file that represents the menu entry must have a
          Categories= entry that lists one or more keywords. The
          menu item will be included in an appropriate submenu
          based on the included keywords.

          To add menu items to a new submenu the desktop-files
          must be preceded by a directory-file that describes the
          submenu. If multiple desktop-files are specified, all
          entries will be added to the same menu. If entries are
          installed to a menu that has been created with a
          previous call to xdg-desktop-menu the entries will be
          installed in addition to any already existing entries.

          directory-file: The *.directory file indicated by
          directory-file represents a submenu. The directory file
          provides the name and icon for a submenu. The name of
          the directory file is used to identify the submenu.

          If multiple directory files are provided each file will
          represent a submenu within the menu that precedes it,
          creating a nested menu hierarchy (sub-sub-menus). The
          menu entries themselves will be added to the last
          submenu.

          Directory files follow the syntax defined by the
          freedesktop.org Desktop Entry Specification.

   uninstall
          Remove applications or submenus from the desktop menu
          system previously installed with xdg-desktop-menu
          install.

          A submenu and the associated directory file is only
          removed when the submenu no longer contains any menu
          entries.

   forceupdate
          Force an update of the menu system.

          This command is only useful if the last call to
          xdg-desktop-menu included the --noupdate option.

Options

   --noupdate
          Postpone updating the menu system. If multiple updates
          to the menu system are made in sequence this flag can be
          used to indicate that additional changes will follow and
          that it is not necessary to update the menu system right
          away.

   --novendor
          Normally, xdg-desktop-menu checks to ensure that any
          *.directory and *.desktop files to be installed has a
          vendor prefix. This option can be used to disable that
          check.

          A vendor prefix consists of alpha characters ([a-zA-Z])
          and is terminated with a dash ("-"). Companies and
          organizations are encouraged to use a word or phrase,
          preferably the organizations name, for which they hold a
          trademark as their vendor prefix. The purpose of the
          vendor prefix is to prevent name conflicts.

   --mode mode
          mode can be user or system. In user mode the file is
          (un)installed for the current user only. In system mode
          the file is (un)installed for all users on the system.
          Usually only root is allowed to install in system mode.

          The default is to use system mode when called by root
          and to use user mode when called by a non-root user.

   --help
          Show command synopsis.

   --manual
          Show this manual page.

   --version
          Show the xdg-utils version information.

Desktop Files

   An application item in the application menu is represented by a
   *.desktop file. A *.desktop file consists of a [Desktop Entry]
   header followed by several Key=Value lines.

   A *.desktop file can provide a name and description for an
   application in several different languages. This is done by
   adding a language code as used by LC_MESSAGES in square
   brackets behind the Key. This way one can specify different
   values for the same Key depending on the currently selected
   language.

   The following keys are often used:

   Type=Application
          This is a mandatory field that indicates that the
          *.desktop file describes an application launcher.

   Name=Application Name
          The name of the application. For example Mozilla

   GenericName=Generic Name
          A generic description of the application. For example
          Web Browser

   Comment=Comment
          Optional field to specify a tooltip for the application.
          For example Visit websites on the Internet

   Icon=Icon File
          The icon to use for the application. This can either be
          an absolute path to an image file or an icon-name. If an
          icon-name is provided an image lookup by name is done in
          the user's current icon theme. The xdg-icon-resource
          command can be used to install image files into icon
          themes. The advantage of using an icon-name instead of
          an absolute path is that with an icon-name the
          application icon can be provided in several different
          sizes as well as in several differently themed styles.

   Exec=Command Line
          The command line to start the application. If the
          application can open files the %f placeholder should be
          specified. When a file is dropped on the application
          launcher the %f is replaced with the file path of the
          dropped file. If multiple files can be specified on the
          command line the %F placeholder should be used instead
          of %f. If the application is able to open URLs in
          addition to local files then %u or %U can be used
          instead of %f or %F.

   Categories=Categories
          A list of categories separated by semi-colons. A
          category is a keyword that describes and classifies the
          application. By default applications are organized in
          the application menu based on category. When menu
          entries are explicitly assigned to a new submenu it is
          not necessary to list any categories.

          When using categories it is recommended to include one
          of the following categories: AudioVideo, Development,
          Education, Game, Graphics, Network, Office, Settings,
          System, Utility.

          See Appendix A of the XDG Desktop Menu Specification for
          information about additional categories:
          http://standards.freedesktop.org/menu-spec/menu-spec-1.0
          .html#category-registry

   MimeType=Mimetypes
          A list of mimetypes separated by semi-colons. This field
          is used to indicate which file types the application is
          able to open.

   For a complete overview of the *.desktop file format please
   visit
   http://www.freedesktop.org/wiki/Specifications/desktop-entry-sp
   ec

Directory Files

   The appearance of submenu in the application menu is provided
   by a *.directory file. In particular it provides the title of
   the submenu and a possible icon. A *.directory file consists of
   a [Desktop Entry] header followed by several Key=Value lines.

   A *.directory file can provide a title (name) for the submenu
   in several different languages. This is done by adding a
   language code as used by LC_MESSAGES in square brackets behind
   the Key. This way one can specify different values for the same
   Key depending on the currently selected language.

   The following keys are relevant for submenus:

   Type=Directory
          This is a mandatory field that indicates that the
          *.directory file describes a submenu.

   Name=Menu Name
          The title of submenu. For example Mozilla

   Comment=Comment
          Optional field to specify a tooltip for the submenu.

   Icon=Icon File
          The icon to use for the submenu. This can either be an
          absolute path to an image file or an icon-name. If an
          icon-name is provided an image lookup by name is done in
          the user's current icon theme. The xdg-icon-resource
          command can be used to install image files into icon
          themes. The advantage of using an icon-name instead of
          an absolute path is that with an icon-name the submenu
          icon can be provided in several different sizes as well
          as in several differently themed styles.

Environment Variables

   xdg-desktop-menu honours the following environment variables:

   XDG_UTILS_DEBUG_LEVEL
          Setting this environment variable to a non-zero
          numerical value makes xdg-desktop-menu do more verbose
          reporting on stderr. Setting a higher value increases
          the verbosity.

   XDG_UTILS_INSTALL_MODE
          This environment variable can be used by the user or
          administrator to override the installation mode. Valid
          values are user and system.

Exit Codes

   An exit code of 0 indicates success while a non-zero exit code
   indicates failure. The following failure codes can be returned:

   1
          Error in command line syntax.

   2
          One of the files passed on the command line did not
          exist.

   3
          A required tool could not be found.

   4
          The action failed.

   5
          No permission to read one of the files passed on the
          command line.

See Also

   xdg-desktop-icon(1), xdg-icon-resource(1), xdg-mime(1), Desktop
   entry specification, Desktop menu specification

Examples

   The company ShinyThings Inc. has developed an application named
   "WebMirror" and would like to add it to the application menu.
   The company will use "shinythings" as its vendor id. In order
   to add the application to the menu there needs to be a .desktop
   file with a suitable Categories entry:
shinythings-webmirror.desktop:

  [Desktop Entry]
  Encoding=UTF-8
  Type=Application

  Exec=webmirror
  Icon=webmirror

  Name=WebMirror
  Name[nl]=WebSpiegel

  Categories=Network;WebDevelopment;

   Now the xdg-desktop-menu tool can be used to add the
   shinythings-webmirror.desktop file to the desktop application
   menu:
xdg-desktop-menu install ./shinythings-webmirror.desktop

   Note that for the purpose of this example the menu items are
   available in two languages, English and Dutch. The language
   code for Dutch is nl.

   In the next example the company ShinyThings Inc. will add its
   own submenu to the desktop application menu consisting of a
   "WebMirror" menu item and a "WebMirror Admin Tool" menu item.

   First the company needs to create two .desktop files that
   describe the two menu items. Since the items are to be added to
   a new submenu it is not necessary to include a Categories=
   line:
shinythings-webmirror.desktop:

  [Desktop Entry]
  Encoding=UTF-8
  Type=Application

  Exec=webmirror
  Icon=shinythings-webmirror

  Name=WebMirror
  Name[nl]=WebSpiegel


shinythings-webmirror-admin.desktop:

  [Desktop Entry]
  Encoding=UTF-8
  Type=Application

  Exec=webmirror-admintool
  Icon=shinythings-webmirror-admintool

  Name=WebMirror Admin Tool
  Name[nl]=WebSpiegel Administratie Tool

   In addition a .directory file needs to be created to provide a
   title and icon for the sub-menu itself:
shinythings-webmirror.directory:

  [Desktop Entry]
  Encoding=UTF-8

  Icon=shinythings-webmirror-menu

  Name=WebMirror
  Name[nl]=WebSpiegel

   These file can now be installed with:
xdg-desktop-menu install ./shinythings-webmirror.directory \
      ./shinythings-webmirror.desktop ./shinythings-webmirror-admin.desk
top

   The menu entries could also be installed one by one:
xdg-desktop-menu install --noupdate ./shinythings-webmirror.directory \
      ./shinythings-webmirror.desktop
xdg-desktop-menu install --noupdate ./shinythings-webmirror.directory \
      ./shinythings-webmirror-admin.desktop
xdg-desktop-menu forceupdate

   Although the result is the same it is slightly more efficient
   to install all files at the same time.

   The *.desktop and *.directory files reference icons with the
   names webmirror, webmirror-admin and webmirror-menu which
   should also be installed. In this example the icons are
   installed in two different sizes, once with a size of 22x22
   pixels and once with a size of 64x64 pixels:
xdg-icon-resource install --size 22 ./wmicon-22.png shinythings-webmirro
r
xdg-icon-resource install --size 22 ./wmicon-menu-22.png shinythings-web
mirror-menu
xdg-icon-resource install --size 22 ./wmicon-admin-22.png shinythings-we
bmirror-admin
xdg-icon-resource install --size 64 ./wmicon-64.png shinythings-webmirro
r
xdg-icon-resource install --size 64 ./wmicon-menu-64.png shinythings-web
mirror-menu
xdg-icon-resource install --size 64 ./wmicon-admin-64.png shinythings-we
bmirror-admin
_MANUALPAGE
}

usage()
{
cat << _USAGE
   xdg-desktop-menu - command line tool for (un)installing desktop
   menu items

Synopsis

   xdg-desktop-menu install [--noupdate] [--novendor] [--mode
   mode] directory-file(s) desktop-file(s)

   xdg-desktop-menu uninstall [--noupdate] [--mode mode]
   directory-file(s) desktop-file(s)

   xdg-desktop-menu forceupdate [--mode mode]

   xdg-desktop-menu { --help | --manual | --version }

_USAGE
}

#@xdg-utils-common@

#----------------------------------------------------------------------------
#   Common utility functions included in all XDG wrapper scripts
#----------------------------------------------------------------------------

DEBUG()
{
  [ -z "${XDG_UTILS_DEBUG_LEVEL}" ] && return 0;
  [ ${XDG_UTILS_DEBUG_LEVEL} -lt $1 ] && return 0;
  shift
  echo "$@" >&2
}

# This handles backslashes but not quote marks.
first_word()
{
    read first rest
    echo "$first"
}

#-------------------------------------------------------------
# map a binary to a .desktop file
binary_to_desktop_file()
{
    search="${XDG_DATA_HOME:-$HOME/.local/share}:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
    binary="`which "$1"`"
    binary="`readlink -f "$binary"`"
    base="`basename "$binary"`"
    IFS=:
    for dir in $search; do
        unset IFS
        [ "$dir" ] || continue
        [ -d "$dir/applications" ] || [ -d "$dir/applnk" ] || continue
        for file in "$dir"/applications/*.desktop "$dir"/applications/*/*.desktop "$dir"/applnk/*.desktop "$dir"/applnk/*/*.desktop; do
            [ -r "$file" ] || continue
            # Check to make sure it's worth the processing.
            grep -q "^Exec.*$base" "$file" || continue
            # Make sure it's a visible desktop file (e.g. not "preferred-web-browser.desktop").
            grep -Eq "^(NoDisplay|Hidden)=true" "$file" && continue
            command="`grep -E "^Exec(\[[^]=]*])?=" "$file" | cut -d= -f 2- | first_word`"
            command="`which "$command"`"
            if [ x"`readlink -f "$command"`" = x"$binary" ]; then
                # Fix any double slashes that got added path composition
                echo "$file" | sed -e 's,//*,/,g'
                return
            fi
        done
    done
}

#-------------------------------------------------------------
# map a .desktop file to a binary
desktop_file_to_binary()
{
    search="${XDG_DATA_HOME:-$HOME/.local/share}:${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
    desktop="`basename "$1"`"
    IFS=:
    for dir in $search; do
        unset IFS
        [ "$dir" ] && [ -d "$dir/applications" ] || [ -d "$dir/applnk" ] || continue
        # Check if desktop file contains -
        if [ "${desktop#*-}" != "$desktop" ]; then
            vendor=${desktop%-*}
            app=${desktop#*-}
            if [ -r $dir/applications/$vendor/$app ]; then
                file_path=$dir/applications/$vendor/$app
            elif [ -r $dir/applnk/$vendor/$app ]; then
                file_path=$dir/applnk/$vendor/$app
            fi
        fi
        if test -z "$file_path" ; then
            for indir in "$dir"/applications/ "$dir"/applications/*/ "$dir"/applnk/ "$dir"/applnk/*/; do
                file="$indir/$desktop"
                if [ -r "$file" ]; then
                    file_path=$file
                    break
                fi
            done
        fi
        if [ -r "$file_path" ]; then
            # Remove any arguments (%F, %f, %U, %u, etc.).
            command="`grep -E "^Exec(\[[^]=]*])?=" "$file_path" | cut -d= -f 2- | first_word`"
            command="`which "$command"`"
            readlink -f "$command"
            return
        fi
    done
}

#-------------------------------------------------------------
# Exit script on successfully completing the desired operation

exit_success()
{
    if [ $# -gt 0 ]; then
        echo "$@"
        echo
    fi

    exit 0
}


#-----------------------------------------
# Exit script on malformed arguments, not enough arguments
# or missing required option.
# prints usage information

exit_failure_syntax()
{
    if [ $# -gt 0 ]; then
        echo "xdg-desktop-menu: $@" >&2
        echo "Try 'xdg-desktop-menu --help' for more information." >&2
    else
        usage
        echo "Use 'man xdg-desktop-menu' or 'xdg-desktop-menu --manual' for additional info."
    fi

    exit 1
}

#-------------------------------------------------------------
# Exit script on missing file specified on command line

exit_failure_file_missing()
{
    if [ $# -gt 0 ]; then
        echo "xdg-desktop-menu: $@" >&2
    fi

    exit 2
}

#-------------------------------------------------------------
# Exit script on failure to locate necessary tool applications

exit_failure_operation_impossible()
{
    if [ $# -gt 0 ]; then
        echo "xdg-desktop-menu: $@" >&2
    fi

    exit 3
}

#-------------------------------------------------------------
# Exit script on failure returned by a tool application

exit_failure_operation_failed()
{
    if [ $# -gt 0 ]; then
        echo "xdg-desktop-menu: $@" >&2
    fi

    exit 4
}

#------------------------------------------------------------
# Exit script on insufficient permission to read a specified file

exit_failure_file_permission_read()
{
    if [ $# -gt 0 ]; then
        echo "xdg-desktop-menu: $@" >&2
    fi

    exit 5
}

#------------------------------------------------------------
# Exit script on insufficient permission to write a specified file

exit_failure_file_permission_write()
{
    if [ $# -gt 0 ]; then
        echo "xdg-desktop-menu: $@" >&2
    fi

    exit 6
}

check_input_file()
{
    if [ ! -e "$1" ]; then
        exit_failure_file_missing "file '$1' does not exist"
    fi
    if [ ! -r "$1" ]; then
        exit_failure_file_permission_read "no permission to read file '$1'"
    fi
}

check_vendor_prefix()
{
    file_label="$2"
    [ -n "$file_label" ] || file_label="filename"
    file=`basename "$1"`
    case "$file" in
       [[:alpha:]]*-*)
         return
         ;;
    esac

    echo "xdg-desktop-menu: $file_label '$file' does not have a proper vendor prefix" >&2
    echo 'A vendor prefix consists of alpha characters ([a-zA-Z]) and is terminated' >&2
    echo 'with a dash ("-"). An example '"$file_label"' is '"'example-$file'" >&2
    echo "Use --novendor to override or 'xdg-desktop-menu --manual' for additional info." >&2
    exit 1
}

check_output_file()
{
    # if the file exists, check if it is writeable
    # if it does not exists, check if we are allowed to write on the directory
    if [ -e "$1" ]; then
        if [ ! -w "$1" ]; then
            exit_failure_file_permission_write "no permission to write to file '$1'"
        fi
    else
        DIR=`dirname "$1"`
        if [ ! -w "$DIR" ] || [ ! -x "$DIR" ]; then
            exit_failure_file_permission_write "no permission to create file '$1'"
        fi
    fi
}

#----------------------------------------
# Checks for shared commands, e.g. --help

check_common_commands()
{
    while [ $# -gt 0 ] ; do
        parm="$1"
        shift

        case "$parm" in
            --help)
            usage
            echo "Use 'man xdg-desktop-menu' or 'xdg-desktop-menu --manual' for additional info."
            exit_success
            ;;

            --manual)
            manualpage
            exit_success
            ;;

            --version)
            echo "xdg-desktop-menu 1.1.2+"
            exit_success
            ;;
        esac
    done
}

check_common_commands "$@"

[ -z "${XDG_UTILS_DEBUG_LEVEL}" ] && unset XDG_UTILS_DEBUG_LEVEL;
if [ ${XDG_UTILS_DEBUG_LEVEL-0} -lt 1 ]; then
    # Be silent
    xdg_redirect_output=" > /dev/null 2> /dev/null"
else
    # All output to stderr
    xdg_redirect_output=" >&2"
fi

#--------------------------------------
# Checks for known desktop environments
# set variable DE to the desktop environments name, lowercase

detectDE()
{
    # see https://bugs.freedesktop.org/show_bug.cgi?id=34164
    unset GREP_OPTIONS

    if [ -n "${XDG_CURRENT_DESKTOP}" ]; then
      case "${XDG_CURRENT_DESKTOP}" in
         # only recently added to menu-spec, pre-spec X- still in use
         Cinnamon|X-Cinnamon)
           DE=cinnamon;
           ;;
         ENLIGHTENMENT)
           DE=enlightenment;
           ;;
         # GNOME, GNOME-Classic:GNOME, or GNOME-Flashback:GNOME
         GNOME*)
           DE=gnome;
           ;;
         KDE)
           DE=kde;
           ;;
         LXDE)
           DE=lxde;
           ;;
         LXQt)
           DE=lxqt;
           ;;
         MATE)
           DE=mate;
           ;;
         XFCE)
           DE=xfce
           ;;
         X-Generic)
           DE=generic
           ;;
      esac
    fi

    if [ x"$DE" = x"" ]; then
      # classic fallbacks
      if [ x"$KDE_FULL_SESSION" != x"" ]; then DE=kde;
      elif [ x"$GNOME_DESKTOP_SESSION_ID" != x"" ]; then DE=gnome;
      elif [ x"$MATE_DESKTOP_SESSION_ID" != x"" ]; then DE=mate;
      elif `dbus-send --print-reply --dest=org.freedesktop.DBus /org/freedesktop/DBus org.freedesktop.DBus.GetNameOwner string:org.gnome.SessionManager > /dev/null 2>&1` ; then DE=gnome;
      elif xprop -root _DT_SAVE_MODE 2> /dev/null | grep ' = \"xfce4\"$' >/dev/null 2>&1; then DE=xfce;
      elif xprop -root 2> /dev/null | grep -i '^xfce_desktop_window' >/dev/null 2>&1; then DE=xfce
      elif echo $DESKTOP | grep -q '^Enlightenment'; then DE=enlightenment;
      elif [ x"$LXQT_SESSION_CONFIG" != x"" ]; then DE=lxqt;
      fi
    fi

    if [ x"$DE" = x"" ]; then
      # fallback to checking $DESKTOP_SESSION
      case "$DESKTOP_SESSION" in
         gnome)
           DE=gnome;
           ;;
         LXDE|Lubuntu)
           DE=lxde; 
           ;;
         MATE)
           DE=mate;
           ;;
         xfce|xfce4|'Xfce Session')
           DE=xfce;
           ;;
      esac
    fi

    if [ x"$DE" = x"" ]; then
      # fallback to uname output for other platforms
      case "$(uname 2>/dev/null)" in 
        CYGWIN*)
          DE=cygwin;
          ;;
        Darwin)
          DE=darwin;
          ;;
      esac
    fi

    if [ x"$DE" = x"gnome" ]; then
      # gnome-default-applications-properties is only available in GNOME 2.x
      # but not in GNOME 3.x
      which gnome-default-applications-properties > /dev/null 2>&1  || DE="gnome3"
    fi

    if [ -f "$XDG_RUNTIME_DIR/flatpak-info" ]; then
      DE="flatpak"
    fi
}

#----------------------------------------------------------------------------
# kfmclient exec/openURL can give bogus exit value in KDE <= 3.5.4
# It also always returns 1 in KDE 3.4 and earlier
# Simply return 0 in such case

kfmclient_fix_exit_code()
{
    version=`LC_ALL=C.UTF-8 kde-config --version 2>/dev/null | grep '^KDE'`
    major=`echo $version | sed 's/KDE.*: \([0-9]\).*/\1/'`
    minor=`echo $version | sed 's/KDE.*: [0-9]*\.\([0-9]\).*/\1/'`
    release=`echo $version | sed 's/KDE.*: [0-9]*\.[0-9]*\.\([0-9]\).*/\1/'`
    test "$major" -gt 3 && return $1
    test "$minor" -gt 5 && return $1
    test "$release" -gt 4 && return $1
    return 0
}

#----------------------------------------------------------------------------
# Returns true if there is a graphical display attached.

has_display()
{
    if [ -n "$DISPLAY" ] || [ -n "$WAYLAND_DISPLAY" ]; then
        return 0
    else
        return 1
    fi
}

update_desktop_database()
{
#    echo Update desktop database: $mode
    if [ "$mode" = "system" ] ; then
        for x in `echo $PATH | sed 's/:/ /g'` /opt/gnome/bin; do
           if [ -x $x/update-desktop-database ] ; then
              DEBUG 1 "Running $x/update-desktop-database"
              eval '$x/update-desktop-database'$xdg_redirect_output
              return
           fi
        done
    fi
}

# Make application $1/$2 the default for all the mimetypes it support,
# iff such mimetype didn't had a default application already.
# $1 Install dir for desktop file
# $2 base name of desktop file
make_lazy_default()
{
    local mimetypes
    local xdg_user_dir
    local xdg_default_dirs

    DEBUG 1 "make_lazy_default $1/$2"
    mimetypes=`awk '
{
    if (match($0,/MimeType=/)) {
        split(substr($0,RSTART+9),mimetypes,";")
        for (n in mimetypes)
        {
               if (mimetypes[n])
                 print mimetypes[n]
        }
    }
}' "$1/$2" 2> /dev/null`

    for MIME in $mimetypes ; do
        xdg_default_dirs="$XDG_DATA_DIRS"
        [ -n "$xdg_default_dirs" ] || xdg_default_dirs=/usr/local/share/:/usr/share/
        if [ x"$mode" = x"user" ] ; then
            xdg_user_dir="$XDG_DATA_HOME"
            [ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.local/share"
            xdg_default_dirs="$xdg_user_dir:$xdg_default_dirs"
        fi
        local default_app
        for x in `echo "$xdg_default_dirs" | sed 's/:/ /g'`; do
            DEBUG 2 "Checking $x/applications/defaults.list"
            default_app=`grep "$MIME=" $x/applications/defaults.list 2> /dev/null | cut -d '=' -f 2`
            if [ -n "$default_app" ] ; then
                DEBUG 2 "Found default apps for $MIME: $default_app"
                default_app="$default_app;"
                break;
            fi
        done
        DEBUG 2 "Current default apps for $MIME: $default_app"
        if echo "$default_app" | grep "$2" > /dev/null 2> /dev/null; then
            # App already listed as default
            continue;
        fi
        default_file="$(readlink -f "$1/defaults.list")"
        DEBUG 1 "Updating $default_file"
        grep -v "$MIME=" $default_file > ${default_file}.new 2> /dev/null
        if ! grep "[Default Applications]" ${default_file}.new > /dev/null; then
            echo "[Default Applications]" >> ${default_file}.new
        fi
        echo $MIME="$default_app$2" >> ${default_file}.new
        mv ${default_file}.new $default_file
    done
}

update_submenu()
{
    DEBUG 1 "update_submenu $1"
    menu_file="$1"

    xdg_dir_name=menus
    xdg_user_dir="$XDG_CONFIG_HOME"
    [ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.config"
    xdg_user_dir="$xdg_user_dir/$xdg_dir_name"

    xdg_system_dirs="$XDG_CONFIG_DIRS"
    [ -n "$xdg_system_dirs" ] || xdg_system_dirs=/etc/xdg
    xdg_global_dir=
    for x in `echo $xdg_system_dirs | sed 's/:/ /g'` ; do
        if [ -w $x/$xdg_dir_name ] ; then
            xdg_global_dir="$x/$xdg_dir_name"
            break
        fi
    done
    xdg_user_dir="$xdg_user_dir/applications-merged"
    xdg_global_dir="$xdg_global_dir/applications-merged"

    DEBUG 3 "Install locations for *.menu file:"
    DEBUG 3 "xdg_user_dir: $xdg_user_dir"
    DEBUG 3 "xdg_global_dir: $xdg_global_dir"
    DEBUG 3 "kde_user_dir: $kde_user_dir"
    DEBUG 3 "kde_global_dir: $kde_global_dir"
    DEBUG 3 "gnome_user_dir: $gnome_user_dir"
    DEBUG 3 "gnome_global_dir: $gnome_global_dir"

    if [ x"$mode" = x"user" ] ; then
        xdg_dir="$xdg_user_dir"
        kde_dir="$kde_user_dir"
        gnome_dir="$gnome_user_dir"
        my_umask=077
        my_chmod=0600
    else
        xdg_dir="$xdg_global_dir"
        kde_dir="$kde_global_dir"
        gnome_dir="$gnome_global_dir"
        my_umask=022
        my_chmod=0644
        if [ -z "${xdg_dir}${kde_dir}${gnome_dir}" ] ; then
            exit_failure_operation_impossible "No writable system menu directory found."
        fi
    fi

    if [ -z "$menu_file" ] ; then
        # Work around for SUSE/gnome 2.12 to pick up new ~/.local/share/applications
        save_umask=`umask`
        umask $my_umask

        mkdir -p $xdg_dir
        touch $xdg_dir/xdg-desktop-menu-dummy.menu

        umask $save_umask
        return
    fi

    if [ $action = "install" ] && [ -f "/etc/xdg/menus/gnome-applications.menu" ] ; then
        # Work around for Debian Gnome
        gnome_xdg_dir=`echo "$xdg_dir" | sed -e 's^/applications-merged^/gnome-applications-merged^'`
        if [ ! -e "$gnome_xdg_dir" ] ; then
            DEBUG 1 "Debian Workaround: Link '$xdg_dir' to '$gnome_xdg_dir'"
            mkdir -p `dirname "$gnome_xdg_dir"`
            eval 'ln -s "applications-merged" "$gnome_xdg_dir"'$xdg_redirect_output
        fi
    fi
    if [ $action = "install" ] && [ -f "/etc/mandrake-release" ] ; then
        # Work around for Mandriva 2006
        mandrake_xdg_dir=`echo "$xdg_dir" | sed -e 's^/applications-merged^/applications-mdk-merged^'`
        if [ ! -e "$mandrake_xdg_dir" ] ; then
            DEBUG 1 "Mandriva Workaround: Link '$xdg_dir' to '$mandrake_xdg_dir'"
            mkdir -p `dirname "$mandrake_xdg_dir"`
            eval 'ln -s "applications-merged" "$mandrake_xdg_dir"'$xdg_redirect_output
        fi
    fi
    if [ $action = "install" -a x"$mode" = x"user" ] && [ -d "/etc/xdg/menus/kde-applications-merged" ] ; then
        # Work around for Fedora Core 5 + patched KDE
        kde_xdg_dir=`echo "$xdg_dir" | sed -e 's^/applications-merged^/kde-applications-merged^'`
        if [ ! -e "$kde_xdg_dir" ] ; then
            DEBUG 1 "Fedora Workaround: Link '$xdg_dir' to '$kde_xdg_dir'"
            mkdir -p `dirname "$kde_xdg_dir"`
            eval 'ln -s "applications-merged" "$kde_xdg_dir"'$xdg_redirect_output
        fi
    fi
    if [ $action = "install" -a x"$mode" = x"system" ] && [ -d "/etc/xdg/menus/kde-applications-merged" ] && [ ! -d "/etc/xdg/menus/applications-merged" ] ; then
        # Work around for Kubuntu 6.06
        kde_xdg_dir=`echo "$xdg_dir" | sed -e 's^/applications-merged^/kde-applications-merged^'`
        DEBUG 1 "Kubuntu Workaround: Link '$xdg_dir' to 'kde-applications-merged'"
        eval 'ln -s "kde-applications-merged" "$xdg_dir"'$xdg_redirect_output
    fi

    orig_menu_file=$xdg_dir/$menu_file

    DEBUG 1 "Updating $orig_menu_file ($action)"

    test "${TMPDIR+set}" = set || TMPDIR=/tmp
    tmpfile=`mktemp $TMPDIR/tmp.XXXXXXXXXX`
    orig_desktop_files=
    if [ -r "$orig_menu_file" ] ; then
        awk '
# List all files within <Filename> tags
BEGIN {
  RS="<"
}
/^Filename/ {
  if (match($0,/>/)) {
     print substr($0,RSTART+1)
  }
}' $orig_menu_file > $tmpfile
    fi

    orig_desktop_files=`cat $tmpfile`
    new_desktop_files=
    if [ $action = "install" ] ; then
        for desktop_file in $desktop_files; do
            basefile=`basename "$desktop_file"`
            if ! grep '^'$basefile'$' $tmpfile > /dev/null 2> /dev/null ; then
            	# Append
            	echo "$basefile" >> $tmpfile
            fi
        done
        new_desktop_files=`cat $tmpfile`
    fi
    if [ $action = "uninstall" ] ; then
        echo > $tmpfile
        for desktop_file in $desktop_files; do
            echo "$desktop_file" >> $tmpfile
        done
        # Files to uninstall are listed in $tmpfile
        # Existing files are in $orig_desktop_files
        if [ ! -z "$orig_desktop_files" ]; then
        for desktop_file in $orig_desktop_files; do
            if ! grep '^'$desktop_file'$' $tmpfile > /dev/null 2> /dev/null; then
            	# Keep this file, it's not in the uninstall list
            	new_desktop_files="$new_desktop_files $desktop_file"
            fi
        done
        fi
    fi
    rm -f "$tmpfile"

    DEBUG 3 "Files to list in $menu_file: $new_desktop_files"

    if [ -n "$new_desktop_files" ] ; then
        # Install/update
        test "${TMPDIR+set}" = set || TMPDIR=/tmp
        tmpfile=`mktemp $TMPDIR/tmp.XXXXXXXXXX`
        (
            echo '<!DOCTYPE Menu PUBLIC "-//freedesktop//DTD Menu 1.0//EN"'
            echo '    "http://www.freedesktop.org/standards/menu-spec/menu-1.0.dtd">'
            echo '<!-- Do not edit manually - generated and managed by xdg-desktop-menu -->'
            echo '<Menu>'
            echo '    <Name>Applications</Name>'

            for desktop_file in $directory_files; do
                basefile=`basename "$desktop_file"`
                basefilename=`echo "$basefile"|cut -d '.' -f 1`
                echo "<Menu>"
                echo "    <Name>$basefilename</Name>"
                echo "    <Directory>$basefile</Directory>"
            done

            echo "    <Include>"
            for desktop_file in $new_desktop_files; do
                echo "        <Filename>$desktop_file</Filename>"
            done
            echo "    </Include>"

            for desktop_file in $directory_files; do
                echo "</Menu>"
            done

            echo '</Menu>'
        ) > $tmpfile
        chmod $my_chmod $tmpfile

        save_umask=`umask`
        umask $my_umask

        mkdir -p $xdg_dir
        eval 'cp $tmpfile $xdg_dir/$menu_file'$xdg_redirect_output

        umask $save_umask
	rm -f "$tmpfile"
    else
        # Uninstall
        rm -f $xdg_dir/$menu_file
    fi

    # Uninstall .directory files only if no longer referenced
    if [ $action = "uninstall" ] ; then
        test "${TMPDIR+set}" = set || TMPDIR=/tmp
        tmpfile=`mktemp $TMPDIR/tmp.XXXXXXXXXX`
        for menu_file in $xdg_dir/*; do
            if grep 'generated and managed by xdg-desktop-menu' "$menu_file" > /dev/null 2> /dev/null; then
                awk '
# List all files within <Directory> tags
BEGIN {
  RS="<"
}
/^Directory/ {
  if (match($0,/>/)) {
     print substr($0,RSTART+1)
  }
}' "$menu_file" >> $tmpfile
            fi
        done
        orig_directory_files="$directory_files"
        directory_files=
        for desktop_file in $orig_directory_files; do
            if ! grep '^'$desktop_file'$' $tmpfile > /dev/null 2> /dev/null; then
                # No longer in use, safe to delete
               directory_files="$directory_files $desktop_file"
            fi
        done
        rm -f "$tmpfile"
    fi
}


[ x"$1" != x"" ] || exit_failure_syntax

mode=
action=
update=yes
desktop_files=
directory_files=

case $1 in
  install)
    action=install
    ;;

  uninstall)
    action=uninstall
    ;;

  forceupdate)
    action=forceupdate
    ;;

  *)
    exit_failure_syntax "unknown command '$1'"
    ;;
esac

shift

vendor=true
while [ $# -gt 0 ] ; do
    parm="$1"
    shift

    case "$parm" in
      --noupdate)
        update=no
        ;;

      --mode)
        if [ -z "$1" ] ; then
            exit_failure_syntax "mode argument missing for --mode"
        fi
        case "$1" in
          user)
            mode="user"
            ;;

          system)
            mode="system"
            ;;

          *)
            exit_failure_syntax "unknown mode '$1'"
            ;;
        esac
        shift
        ;;

      --novendor)
        vendor=false
        ;;

      -*)
        exit_failure_syntax "unexpected option '$parm'"
        ;;

      *)
        if [ "$action" = "install" ] ; then
            check_input_file "$parm"
        fi
        case "$parm" in
           *.directory)
              if [ -n "$desktop_files" ] ; then
                  exit_failure_syntax "'$parm' must precede any *.desktop file"
              fi
              directory_files="$directory_files $parm"
              ;;
           *.desktop)
              desktop_files="$desktop_files $parm"
              ;;
           *)
              exit_failure_syntax "file to $action must be a *.directory or *.desktop file"
              ;;
        esac
        ;;
    esac
done

# Shouldn't happen
if [ -z "$action" ] ; then
    exit_failure_syntax "command argument missing"
fi

if [ -n "$XDG_UTILS_INSTALL_MODE" ] ; then
    if [ "$XDG_UTILS_INSTALL_MODE" = "system" ] ; then
        mode="system"
    elif [ "$XDG_UTILS_INSTALL_MODE" = "user" ] ; then
        mode="user"
    fi
fi

if [ -z "$mode" ] ; then
    if [ `whoami` = "root" ] ; then
       mode="system"
    else
       mode="user"
    fi
fi

if [ x"$action" = x"forceupdate" ] ; then
    update_desktop_database
    exit_success
fi

if [ -z "$desktop_files" ] ; then
    exit_failure_syntax "desktop-file argument missing"
fi

menu_name=
for desktop_file in $directory_files; do
    if [ "$vendor" =  "true" -a "$action" = "install" ] ; then
        check_vendor_prefix "$desktop_file"
    fi

    basefilename=`basename "$desktop_file" | cut -d '.' -f 1`
    if [ -z "$menu_name" ] ; then
        menu_name="$basefilename"
    else
        menu_name="$menu_name-$basefilename"
    fi
done

if [ -n "$menu_name" ] ; then
    if [ x"$mode" = x"user" ] ; then
        update_submenu "user-$menu_name.menu"
    else
        update_submenu "$menu_name.menu"
    fi
else
    # Work around for SUSE/gnome 2.12 to pick up new ~/.local/share/applications
    if [ x"$mode" = x"user" ] ; then
        update_submenu
    fi
fi

# Install *.directory files

xdg_dir_name=desktop-directories

xdg_user_dir="$XDG_DATA_HOME"
[ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.local/share"
xdg_user_dir="$xdg_user_dir/$xdg_dir_name"

xdg_system_dirs="$XDG_DATA_DIRS"
[ -n "$xdg_system_dirs" ] || xdg_system_dirs=/usr/local/share/:/usr/share/
xdg_global_dir=
for x in `echo $xdg_system_dirs | sed 's/:/ /g'` ; do
    if [ -w $x/$xdg_dir_name ] ; then
        xdg_global_dir="$x/$xdg_dir_name"
        break
    fi
done

DEBUG 3 "Install locations for *.directory files:"
DEBUG 3 "xdg_user_dir: $xdg_user_dir"
DEBUG 3 "xdg_global_dir: $xdg_global_dir"
DEBUG 3 "kde_user_dir: $kde_user_dir"
DEBUG 3 "kde_global_dir: $kde_global_dir"
DEBUG 3 "gnome_user_dir: $gnome_user_dir"
DEBUG 3 "gnome_global_dir: $gnome_global_dir"

if [ x"$mode" = x"user" ] ; then
    xdg_dir="$xdg_user_dir"
    kde_dir="$kde_user_dir"
    gnome_dir="$gnome_user_dir"
    my_umask=077
else
    xdg_dir="$xdg_global_dir"
    kde_dir="$kde_global_dir"
    gnome_dir="$gnome_global_dir"
    my_umask=022
    if [ -z "${xdg_dir}${kde_dir}${gnome_dir}" ] ; then
        exit_failure_operation_impossible "No writable system menu directory found."
    fi
fi

for desktop_file in $directory_files; do
    basefile=`basename "$desktop_file"`

    DEBUG 1 "$action $desktop_file in $xdg_dir $kde_dir $gnome_dir"

    case $action in
        install)
            save_umask=`umask`
            umask $my_umask

            for x in $xdg_dir $kde_dir $gnome_dir ; do
                mkdir -p $x
                eval 'cp $desktop_file $x/$basefile'$xdg_redirect_output
            done

            umask $save_umask
            ;;

        uninstall)
            for x in $xdg_dir $kde_dir $gnome_dir ; do
                rm -f $x/$basefile
            done

            ;;
    esac
done

# Install *.desktop files
xdg_dir_name=applications

xdg_user_dir="$XDG_DATA_HOME"
[ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.local/share"
xdg_user_dir="$xdg_user_dir/$xdg_dir_name"

xdg_system_dirs="$XDG_DATA_DIRS"
[ -n "$xdg_system_dirs" ] || xdg_system_dirs=/usr/local/share/:/usr/share/
xdg_global_dir=
for x in `echo $xdg_system_dirs | sed 's/:/ /g'` ; do
    if [ -w $x/$xdg_dir_name ] ; then
        xdg_global_dir="$x/$xdg_dir_name"
        break
    fi
done

kde_user_dir=`kde${KDE_SESSION_VERSION}-config --path apps 2> /dev/null | cut -d ':' -f 1`
kde_global_dir=`kde${KDE_SESSION_VERSION}-config --path apps 2> /dev/null | cut -d ':' -f 2`
[ -w $kde_global_dir ] || kde_global_dir=

gnome_user_dir="$HOME/.gnome/apps"
gnome_global_dir="/usr/share/gnome/apps"
[ -w $gnome_global_dir ] || gnome_global_dir=

DEBUG 3 "Install locations for *.desktop files:"
DEBUG 3 "xdg_user_dir: $xdg_user_dir"
DEBUG 3 "xdg_global_dir: $xdg_global_dir"
DEBUG 3 "kde_user_dir: $kde_user_dir"
DEBUG 3 "kde_global_dir: $kde_global_dir"
DEBUG 3 "gnome_user_dir: $gnome_user_dir"
DEBUG 3 "gnome_global_dir: $gnome_global_dir"

if [ x"$mode" = x"user" ] ; then
    xdg_dir="$xdg_user_dir"
    kde_dir="$kde_user_dir"
    gnome_dir="$gnome_user_dir"
    my_umask=077
else
    xdg_dir="$xdg_global_dir"
    kde_dir="$kde_global_dir"
    gnome_dir="$gnome_global_dir"
    my_umask=022
    if [ -z "${xdg_dir}${kde_dir}${gnome_dir}" ] ; then
        exit_failure_operation_impossible "No writable system menu directory found."
    fi
fi

for desktop_file in $desktop_files; do
    if [ "$vendor" =  "true" -a "$action" = "install" ] ; then
        check_vendor_prefix "$desktop_file"
    fi

    basefile=`basename "$desktop_file"`

    DEBUG 1 "$action $desktop_file in $xdg_dir $kde_dir $gnome_dir"

    case $action in
        install)
            save_umask=`umask`
            umask $my_umask

            for x in $xdg_dir $kde_dir $gnome_dir ; do
                mkdir -p $x
                eval 'cp $desktop_file $x/$basefile'$xdg_redirect_output
            done

            if [ -f $kde_dir/$basefile ] ; then
                echo "OnlyShowIn=Old;" >> $kde_dir/$basefile
            fi

            if [ -f $gnome_dir/$basefile ] ; then
                echo "OnlyShowIn=Old;" >> $gnome_dir/$basefile
            fi

            make_lazy_default "$xdg_dir" "$basefile"

            umask $save_umask
            ;;

        uninstall)
            for x in $xdg_dir $kde_dir $gnome_dir ; do
                rm -f $x/$basefile
            done

            ;;
    esac
done

if [ x"$update" = x"yes" ] ; then
    update_desktop_database
fi

exit_success

Zerion Mini Shell 1.0