JezK

Edit File: xdg-icon-resource

#!/bin/sh
#---------------------------------------------
#   xdg-icon-resource
#
#   Utility script to install icons 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-icon-resource - command line tool for (un)installing icon resources

Synopsis

xdg-icon-resource install [--noupdate] [--novendor] [--theme theme] [--context
context] [--mode mode] --size size icon-file [icon-name]

xdg-icon-resource uninstall [--noupdate] [--theme theme] [--context context]
[--mode mode] --size size icon-name

xdg-icon-resource forceupdate [--theme theme] [--mode mode]

xdg-icon-resource { --help | --manual | --version }

Description

The xdg-icon-resource program can be used to install icon resources into the
desktop icon system in order to illustrate menu entries, to depict desktop
icons or to graphically represent file types.

The desktop icon system identifies icons by name. Depending on the required
size, the choice of icon theme and the context in which the icon is used, the
desktop icon system locates an appropriate icon resource to depict an icon.
Icon resources can be XPM files or PNG files.

The desktop icon system works according to the XDG Icon Theme Specification at
http://www.freedesktop.org/wiki/Specifications/icon-theme-spec

Commands

install
    Installs the icon file indicated by icon-file to the desktop icon system
    under the name icon-name. Icon names do not have an extension. If icon-name
    is not provided the name is derived from icon-file. The icon file must have
    .png or .xpm as extension. If a corresponding .icon file exists in the same
    location as icon-file it will be installed as well.
uninstall
    Removes the icon indicated by icon-name from the desktop icon system. Note
    that icon names do not have an extension.
forceupdate
    Force an update of the desktop icon system. This is only useful if the last
    call to xdg-icon-resource included the --noupdate option.

Options

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

Normally, xdg-icon-resource checks to ensure that an icon file to be
    installed in the apps context has a proper 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.

--theme theme
    Installs or removes the icon file as part of theme. If no theme is
    specified the icons will be installed as part of the default hicolor theme.
    Applications may install icons under multiple themes but should at least
    install icons for the default hicolor theme.
--context context
    Specifies the context for the icon. Icons to be used in the application
    menu and as desktop icon should use apps as context which is the default
    context. Icons to be used as file icons should use mimetypes as context.
    Other common contexts are actions, devices, emblems, filesystems and stock.
--size size
    Specifies the size of the icon. All icons must be square. Common sizes for
    icons in the apps context are: 16, 22, 32, 48, 64 and 128. Common sizes for
    icons in the mimetypes context are: 16, 22, 32, 48, 64 and 128
--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.

Environment Variables

xdg-icon-resource honours the following environment variables:

XDG_UTILS_DEBUG_LEVEL
    Setting this environment variable to a non-zero numerical value makes
    xdg-icon-resource 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-desktop-menu(1), xdg-mime(1), Icon theme specification

Examples

To install an icon resource to depict a launcher for the application myfoobar,
the company ShinyThings Inc. can use:

xdg-icon-resource install --size 64 shinythings-myfoobar.png

To install an icon for a new application/x-foobar file type one can use:

xdg-icon-resource install --context mimetypes --size 48 ./mime-foobar-48.png application-x-foobar
xdg-icon-resource install --context mimetypes --size 64 ./mime-foobar-64.png application-x-foobar

This will install two icons with the name application-x-foobar but with
different sizes.

_MANUALPAGE
}

usage()
{
cat << _USAGE
xdg-icon-resource - command line tool for (un)installing icon resources

Synopsis

xdg-icon-resource install [--noupdate] [--novendor] [--theme theme] [--context
context] [--mode mode] --size size icon-file [icon-name]

xdg-icon-resource uninstall [--noupdate] [--theme theme] [--context context]
[--mode mode] --size size icon-name

xdg-icon-resource forceupdate [--theme theme] [--mode mode]

xdg-icon-resource { --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-icon-resource: $@" >&2
        echo "Try 'xdg-icon-resource --help' for more information." >&2
    else
        usage
        echo "Use 'man xdg-icon-resource' or 'xdg-icon-resource --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-icon-resource: $@" >&2
    fi

exit 2
}

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

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

exit 3
}

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

exit_failure_operation_failed()
{
    if [ $# -gt 0 ]; then
        echo "xdg-icon-resource: $@" >&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-icon-resource: $@" >&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-icon-resource: $@" >&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-icon-resource: $file_label '$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-icon-resource --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-icon-resource' or 'xdg-icon-resource --manual' for additional info."
            exit_success
            ;;

--manual)
            manualpage
            exit_success
            ;;

--version)
            echo "xdg-icon-resource 1.1.3"
            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;
           ;;
         DEEPIN|Deepin|deepin)
           DE=deepin;
           ;;
         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
}

# Set GTK_UPDATE_ICON_CACHE to gtk-update-icon-cache executable path or
# to "-" if not found.
GTK_UPDATE_ICON_CACHE=
find_gtk_update_icon_cache()
{
    [ -n "$GTK_UPDATE_ICON_CACHE" ] && return;

GTK_UPDATE_ICON_CACHE="-"
    for x in `echo "$PATH:/opt/gnome/bin" | sed 's/:/ /g'`; do
        DEBUG 3 "Checking $x for gtk-update-icon-cache"
        if [ -x "$x/gtk-update-icon-cache" ] ; then
            DEBUG 1 "Found $x/gtk-update-icon-cache"
            GTK_UPDATE_ICON_CACHE="$x/gtk-update-icon-cache"
            return
        fi
    done
}

# Start GNOME legacy workaround section
need_dot_icon_path()
{
  # GTK < 2.6 uses ~/.icons but not XDG_DATA_HOME/icons
  # The availability of gtk-update-icon-cache is used as indication
  # of whether the system is using GTK 2.6 or later
  find_gtk_update_icon_cache
  [ "$GTK_UPDATE_ICON_CACHE" != "-" ] && return 1;
  return 0;
}

update_icon_database()
{
   # Touch me, I'm dirty
   touch "$1/.xdg-icon-resource-dummy"
   rm -f "$1/.xdg-icon-resource-dummy"

# Don't create a cache if there wan't one already
   if [ -f "$1/icon-theme.cache" ] ; then
      find_gtk_update_icon_cache
      if [ "$GTK_UPDATE_ICON_CACHE" != "-" ] ; then
         DEBUG 1 "Running $GTK_UPDATE_ICON_CACHE -f -t \"$1\""
         eval '$GTK_UPDATE_ICON_CACHE -f -t "$1"'$xdg_redirect_output
         return
      fi
   fi
}

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

mode=
action=
update=yes
size=
theme=hicolor
context=apps
icon_file=
icon_name=

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
        ;;

--theme)
        if [ -z "$1" ] ; then
            exit_failure_syntax "theme argument missing for --theme"
        fi
        theme="$1"
        shift
        ;;

--size)
        if [ -z "$1" ] ; then
            exit_failure_syntax "size argument missing for --size"
        fi
        if echo "$1" | grep '[^0-9]' > /dev/null 2> /dev/null; then
            exit_failure_syntax "size argument must be numeric"
        fi
        size="$1"
        shift
        ;;

--context)
        if [ -z "$1" ] ; then
            exit_failure_syntax "context argument missing for --context"
        fi
        context="$1"
        shift
        ;;

--novendor)
        vendor=false
        ;;

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

*)
        if [ -n "$icon_name" ] ; then
            exit_failure_syntax "unexpected argument '$parm'"
        elif [ -n "$icon_file" ] ; then
            icon_name="$parm"
        else
            if [ "$action" = "install" ] ; then
                check_input_file "$parm"
            fi
            icon_file="$parm"
        fi
        ;;
    esac
done

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

# Shouldn't happen
if [ -z "$context" ] ; then
    exit_failure_syntax "context 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

xdg_dir_name="icons/$theme"

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

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

dot_icon_dir=
dot_base_dir=
if [ x"$mode" = x"user" ] ; then
    xdg_base_dir="$xdg_user_dir"
    #Gnome 2.8 supports ~/.icons but not XDG_DATA_HOME
    if need_dot_icon_path ; then
        dot_icon_dir="$HOME/.icons"
        dot_base_dir="$dot_icon_dir/$theme"
    fi
else
    xdg_base_dir="$xdg_global_dir"
    if [ -z "$xdg_base_dir" ] ; then
        exit_failure_operation_impossible "No writable system icon directory found."
    fi
fi

if [ x"$action" = x"forceupdate" ] ; then
    if [ -n "$icon_file" ] ; then
      exit_failure_syntax "unexpected argument '$icon_file'"
    fi
    update_icon_database $xdg_base_dir
    if [ -n "$dot_icon_dir" ] ; then
        if [ -d "$dot_icon_dir/" ] && [ ! -L "$dot_icon_dir" ] ; then
            update_icon_database "$dot_base_dir"
        fi
    fi
    exit_success
fi

if [ -z "$icon_file" ] ; then
    if [ x"$action" = x"install" ] ; then
      exit_failure_syntax "icon-file argument missing"
    else
      exit_failure_syntax "icon-name argument missing"
    fi
fi

xdg_size_name=
extension=

if [ -z "$size" ] ; then
    exit_failure_syntax "the icon size must be specified with --size"
fi
xdg_size_name="${size}x${size}"

if [ x"$action" = x"install" ] ; then
    case "$icon_file" in
      *.xpm)
        extension="xpm"
        ;;
      *.png)
        extension="png"
        ;;
      *)
        exit_failure_syntax "icon file to install must be a *.png or *.xpm file"
        ;;
    esac
fi

if [ -n "$icon_name" ] ; then
    case "$icon_name" in
      *.png)
         exit_failure_syntax "icon name should not include an extension"
         ;;
      *.xpm)
         exit_failure_syntax "icon name should not include an extension"
         ;;
    esac
fi

# Start KDE legacy workaround section
need_kde_icon_path()
{
  local path
  path=`readlink -f "$1" 2> /dev/null` # Normalize path
  DEBUG 2 "need_kde_icon_path $path"
  if [ -z "$path" ] ; then
     DEBUG 2 "need_kde_icon_path RETURN 1 (not needed, no xdg icon dir)"
     return 1; # Not needed
  fi

# if kde-config not found... return 0
  kde_icon_dirs=`kde${KDE_SESSION_VERSION}-config --path icon 2> /dev/null |sed 's/:/ /g'`
  DEBUG 3 "kde_icon_dirs: $kde_icon_dirs"
  if [ -z "$kde_icon_dirs" ] ; then
     DEBUG 3 "no result from kde${KDE_SESSION_VERSION}-config --path icon"
     DEBUG 2 "need_kde_icon_path RETURN 1 (not needed, no kde icon path)"
     return 1; # Not needed
  fi
  needed=0 # Needed
  for y in $kde_icon_dirs ; do
    x=`readlink -f "$y"` # Normalize path
    DEBUG 3 "Normalize $y --> $x"
    if [ -n "$x" ] ; then
      if [ "$x" = "$path" ] ; then
        needed=1 # Not needed
      fi
      if [ -w "$x" ] ; then
        kde_global_prefix="$x"
        # Take last writable dir
      fi
    fi
  done
  DEBUG 2 "kde_global_prefix: $kde_global_prefix"
  [ $needed -eq 1 ] && DEBUG 2 "need_kde_icon_path RETURN $needed (not needed)"
  [ $needed -eq 0 ] && DEBUG 2 "need_kde_icon_path RETURN $needed (needed)"
  return $needed
}

kde_dir=
if [ x"$mode" = x"user" ] ; then
    xdg_dir="$xdg_base_dir/$xdg_size_name/$context"
    #KDE 3.x doesn't support XDG_DATA_HOME for icons
    #Check if xdg_dir prefix is listed by kde-config --path icon
    #If not, install additional symlink to kdedir
    if need_kde_icon_path "$xdg_user_prefix" ; then
        kde_user_icon_dir=`kde${KDE_SESSION_VERSION}-config --path icon | cut -d ':' -f 1`
        kde_user_dir="$kde_user_icon_dir/$theme"
        kde_dir="$kde_user_dir/$xdg_size_name/$context"
    fi
    #Gnome 2.8 supports ~/.icons but not XDG_DATA_HOME
    if [ -n "$dot_icon_dir" ] ; then
        if [ -L "$dot_icon_dir" ] ; then
            # Don't do anything
            dot_icon_dir=
        elif [ ! -d "$dot_icon_dir/" ] ; then
            # Symlink if it doesn't exist
            eval 'ln -s ".local/share/icons" "$dot_icon_dir"'$xdg_redirect_output
            dot_icon_dir=
        else
            dot_icon_dir="$dot_icon_dir/$theme/$xdg_size_name/$context"
        fi
    fi
    my_umask=077
else
    xdg_dir="$xdg_base_dir/$xdg_size_name/$context"
    #KDE 3.x doesn't support XDG_DATA_DIRS for icons
    #Check if xdg_dir prefix is listed by kde-config --path icon
    #If not, install additional symlink to kdedir
    if need_kde_icon_path "$xdg_global_prefix" ; then
        kde_global_dir="$kde_global_prefix/$theme"
        kde_dir="$kde_global_dir/$xdg_size_name/$context"
    fi
    my_umask=022
fi
# End KDE legacy workaround section

# Start GNOME legacy workaround section
need_gnome_mime=
[ "$context" = "mimetypes" ] && need_gnome_mime=true
# End GNOME legacy workaround section

[ -n "$icon_name" ] || icon_name=`basename "$icon_file" | sed 's/\.[a-z][a-z][a-z]$//'`

if [ "$vendor" = "true" -a "$action" = "install" -a "$context" = "apps" ] ; then
    check_vendor_prefix "$icon_name" "icon name"
fi

icon_icon_file=`echo "$icon_file" | sed 's/\.[a-z][a-z][a-z]$/.icon/'`
icon_icon_name="$icon_name.icon"

DEBUG 1 "$action icon in $xdg_dir"
[ "$action" = "install" ] && [ -f "$icon_icon_file" ] && DEBUG 1 "install $icon_icon_name meta file in $xdg_dir"
[ -n "$kde_dir" ] && DEBUG 1 "$action symlink in $kde_dir (KDE 3.x support)"
[ -n "$need_gnome_mime" ] && DEBUG 1 "$action gnome-mime-$icon_name symlink (GNOME 2.x support)"
[  "$action" = "install" -a -n "$dot_icon_dir" ] && DEBUG 1 "$action ~/.icons symlink (GNOME 2.8 support)"

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

for icon_dir in "$xdg_dir" "$dot_icon_dir"; do
            [ -z "$icon_dir" ] && continue
            mkdir -p "$icon_dir"
            eval 'cp "$icon_file" "$icon_dir/$icon_name.$extension"'$xdg_redirect_output
            if [ -f "$icon_icon_file" ] ; then
                eval 'cp "$icon_icon_file" "$icon_dir/$icon_icon_name"'$xdg_redirect_output
            fi
            if [ -n "$need_gnome_mime" ] ; then
                eval 'ln -s "$icon_name.$extension" "$icon_dir/gnome-mime-$icon_name.$extension"'$xdg_redirect_output
            fi
        done
        if [ -n "$kde_dir" ] ; then
            mkdir -p "$kde_dir"
            eval 'ln -s "$xdg_dir/$icon_name.$extension" "$kde_dir/$icon_name.$extension"'$xdg_redirect_output
        fi

umask $save_umask
        ;;

uninstall)
        for icon_dir in "$xdg_dir" "$dot_icon_dir"; do
            [ -z "$icon_dir" ] && continue
            rm -f "$icon_dir/$icon_name.xpm" "$icon_dir/$icon_name.png"
            rm -f "$icon_dir/$icon_icon_name"
            if [ -n "$need_gnome_mime" ] ; then
                rm -f "$icon_dir/gnome-mime-$icon_name.xpm"
                rm -f "$icon_dir/gnome-mime-$icon_name.png"
            fi
        done
        if [ -n "$kde_dir" ] ; then
            rm -f "$kde_dir/$icon_name.xpm" "$kde_dir/$icon_name.png"
        fi

;;
esac

if [ x"$update" = x"yes" ] ; then
    update_icon_database "$xdg_base_dir"
    if [ -n "$dot_icon_dir" ] ; then
        if [ -d "$dot_icon_dir/" ] && [ ! -L "$dot_icon_dir" ] ; then
            update_icon_database "$dot_base_dir"
        fi
    fi
fi

exit_success

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