#!/bin/sh
#---------------------------------------------
#   xdg-icon-resource
#
#   Utility script to install icons on a Linux desktop.
#
#   Refer to the usage() function below for usage.
#
#   Copyright 2006, Kevin Krammer <kevin.krammer@gmx.at>
#   Copyright 2006, Jeremy White <jwhite@codeweavers.com>
#
#   LICENSE:
#
#---------------------------------------------

manualpage()
{
cat << _MANUALPAGE
_MANUALPAGE
}

usage()
{
cat << _USAGE
_USAGE
}

#@xdg-utils-common@

# 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/.@NAME@-dummy"
   rm -f "$1/.@NAME@-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 "$dot_icon_dir/" -a ! -L "$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-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-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 "$xdg_user_prefix" ; then
        kde_user_dir="$HOME/.kde/share/icons/$theme"
        kde_dir="$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" -a -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
            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 $dot_icon_dir; do
            rm -f "$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/" -a ! -L "$dot_icon_dir" ] ; then
            update_icon_database $dot_base_dir
        fi
    fi
fi

exit_success