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243 lines
9.1 KiB
Bash
Executable File
243 lines
9.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Author: Lu Xu <oliver_lew at outlook dot com>
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# License: MIT
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# References: https://specifications.freedesktop.org/desktop-entry-spec
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# https://specifications.freedesktop.org/icon-theme-spec
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# XDG directories
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XDG_DATA_HOME=${XDG_DATA_HOME:-$HOME/.local/share}
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XDG_CACHE_HOME=${XDG_CACHE_HOME:-$HOME/.cache}
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XDG_CONFIG_HOME=${XDG_CONFIG_HOME:-$HOME/.config}
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XDG_DATA_DIRS=${XDG_DATA_DIRS:-/usr/share:/usr/local/share}
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# Apply default configuration values
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SHOW_ALL=${XDG_MENU_SHOW_ALL:-}
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TERMINAL=${XDG_MENU_TERMINAL:-xterm}
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SIZE=${XDG_MENU_ICON_SIZE:-24}
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ICON_THEME=${XDG_MENU_ICON_THEME:-$(
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if command -v gtk-query-settings > /dev/null; then
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gtk-query-settings gtk-icon-theme-name | awk '{ print $2 }' | tr -d '"'
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else
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echo Adwaita
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fi
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)}
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FALLBACK_ICON=${XDG_MENU_FALLBACK_ICON:-application-x-executable}
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# Read CLI arguments
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while getopts "ab:fhi:ns:t:" arg; do
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case "$arg" in
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a) SHOW_ALL=1;;
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b) FALLBACK_ICON=$OPTARG;;
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f) force_cache=1;;
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i) ICON_THEME=$OPTARG;;
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n) not_cache=1;;
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s) SIZE=$OPTARG;;
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t) TERMINAL=$OPTARG;;
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h|*) echo "$0 [-a] [-b icon] [-f] [-i theme] [-n] [-s size] [-t term]" && exit ;;
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esac
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done
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# Directories
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DATA_DIRS=$XDG_DATA_HOME:$XDG_DATA_DIRS
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CACHE_DIR="$XDG_CACHE_HOME/xdg-xmenu"
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CACHE_ICON_DIR="$CACHE_DIR/icons"
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mkdir -p "$CACHE_ICON_DIR"
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# Find directories in an icon theme matching the target size
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valid_dirs() {
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theme_dir=$1
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[ -f "$theme_dir/index.theme" ] || return
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while IFS='=' read -r key value; do
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# parse the index.theme file
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case "$key" in
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\[*\])
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# FIXME: scaled icons are ignored for now, sorry HiDPI
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# deal with last subdirectory, only Size is mandatory
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if [ "${Scale-1}" = 1 ] && [ -n "$Size" ]; then
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# defaults if they are not specified
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Type=${Type:-Threshold}
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MaxSize=${MaxSize:-Size}
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MinSize=${MinSize:-Size}
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Threshold=${Threshold:-2}
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# match subdirectory sizes based on 'Type'
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# 1. fixed size, has to be exact
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{ [ "$Type" = Fixed ] &&
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[ "$SIZE" = "$Size" ]; } ||
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# 2. threshold size, within Threshold times
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{ [ "$Type" = Threshold ] &&
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[ "$SIZE" -ge "$((Size / Threshold))" ] &&
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[ "$SIZE" -le "$((Size * Threshold))" ]; } ||
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# 3. scalable size, Min/MaxSize as lower/upper limits
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{ [ "$Type" = Scalable ] &&
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[ "$SIZE" -ge "$MinSize" ] &&
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[ "$SIZE" -le "$MaxSize" ]; } &&
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# found it
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echo "$theme_dir/$subdir"
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fi
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# clean up variables for the new subdirectory
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unset MaxSize MinSize Scale Size Threshold Type subdir
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subdir=${key#[}
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subdir=${subdir%]}
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;;
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*)
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# read each key-value pair into shell variables
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[ -n "$value" ] && eval "$key=\"$value\""
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;;
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esac
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done < "$theme_dir/index.theme"
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}
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# Find all directories matching the size and containing icons directly
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find_all_dirs() {
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IFS=':'
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for datadir in $DATA_DIRS; do unset IFS
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for theme in "$ICON_THEME" "hicolor"; do
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valid_dirs "$datadir/icons/$theme"
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done
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done
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echo "/usr/share/pixmaps"
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}
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all_dirs=$(find_all_dirs)
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# Search for an icon based on its name
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find_icon() {
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icon=$1
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# find any png, svg or xpm icon in available directories
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for dir in $all_dirs; do
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for ext in png svg xpm; do
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if [ -f "$dir/$icon.$ext" ]; then
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echo "$dir/$icon.$ext"
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return
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fi
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done
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done
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# when the fallback icon is not found, return none instead
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[ "$icon" = "$FALLBACK_ICON" ] && echo "" || echo "$FALLBACK_ICON"
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}
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# xmenu does not support svg, so convert svg to png
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cache_icon() {
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icon=$1
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# icon is a existing png/xpm file
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[ -f "$icon" ] && [ ${icon##*.} != 'svg' ] && echo "$icon" && return
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# cache path in $CACHE_ICON_DIR with the flattened name
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[ -f "$icon" ] && basename=$(echo $icon | tr '/' '_') || basename=${icon##*/}
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cache_path=$CACHE_ICON_DIR/$basename.png
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# already cached, skip unless forced to cache again
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if [ -f "$cache_path" ] && [ -z "$force_cache" ]; then
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echo "$cache_path" && return
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fi
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# find the icon in icon themes if the name is not a path
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[ -f "$icon" ] && icon_path=$icon || icon_path=$(find_icon "$icon")
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# convert svg -> png
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if [ "${icon_path##*.}" = "svg" ]; then
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# first try the fasted, then the slower ones
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if [ -n "$not_cache" ]; then
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: # not doing caching in dry run mode
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elif command -v rsvg-convert > /dev/null; then
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rsvg-convert -w "$SIZE" -h "$SIZE" "$icon_path" -o "$cache_path"
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elif command -v convert > /dev/null; then
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convert -background none -size "${SIZE}x${SIZE}" "$icon_path" "$cache_path"
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elif command -v inkscape > /dev/null; then
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inkscape -w "$SIZE" -h "$SIZE" "$icon_path" -o "$cache_path"
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else
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echo >&2 "[Error]: Convert svg icons failed."
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echo >&2 "Please install one of the following programs:"
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echo >&2 "rsvg-convert(librsvg), convert(imagemagick), inkscape"
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exit 1
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fi
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echo "$cache_path"
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else
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# use png and xpm icons in-place
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# this could be empty if no fallback icon is found, and it will work
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echo "$icon_path"
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fi
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}
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FALLBACK_ICON=$(cache_icon "$FALLBACK_ICON")
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# parse the desktop entries and categorize them
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IFS=:
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for datadir in $DATA_DIRS; do unset IFS
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appdir="$datadir/applications"
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[ ! -d "$appdir" ] && continue
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for app in "$appdir"/*.desktop; do
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unset icon name genname cmd category nodisplay useterm added
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while IFS="=" read -r key value; do
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case "$key" in
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Categories) [ -z "$category" ] && category=$value ;;
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Icon) [ -z "$icon" ] && icon=$(cache_icon "$value") ;;
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Name) [ -z "$name" ] && name="$value" ;;
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GenericName)[ -z "$genname" ] && genname=$value ;;
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Exec) [ -z "$cmd" ] && cmd=$value &&
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# remove %* place holders
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[ "${cmd#*%}" != "$cmd" ] && cmd=$(
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echo "$cmd" | sed 's/ %[fFuUick]//g' | sed 's/%%/$/g'
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) ;;
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NoDisplay) [ "$value" != "false" ] && nodisplay=1 ;;
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Terminal) [ "$value" != "false" ] && useterm=1 ;;
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# FIXME: show_all not working as it should
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OnlyShowIn) [ -z "$SHOW_ALL" ] && nodisplay=1 ;;
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esac
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done < "$app"
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[ -n "$nodisplay" ] && continue
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[ -n "$useterm" ] && cmd="$TERMINAL -e $cmd"
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[ -n "$genname" ] && name="$name ($genname)"
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icon="${icon-$FALLBACK_ICON}"
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icon="${icon:+\tIMG:$icon}"
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item="$icon\t$name\t$cmd"
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IFS=\;
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for c in $category; do unset IFS
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case "$c" in
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Audio*|*Video) added=1; Multimedia="$Multimedia$item\n" ;;
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Development) added=1; Development="$Development$item\n" ;;
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Education) added=1; Education="$Education$item\n" ;;
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Game) added=1; Games="$Games$item\n" ;;
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Graphics) added=1; Graphics="$Graphics$item\n" ;;
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Network) added=1; Internet="$Internet$item\n" ;;
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Office) added=1; Office="$Office$item\n" ;;
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Science) added=1; Science="$Science$item\n" ;;
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Settings) added=1; Settings="$Settings$item\n" ;;
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System) added=1; System="$System$item\n" ;;
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Utility) added=1; Accessories="$Accessories$item\n" ;;
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esac
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done
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[ -z "$added" ] && Others="$Others$item\n"
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done
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done
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category_sort() {
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category_icon=$1
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category_name=$2
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category_apps=$3
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icon=$(cache_icon "$category_icon")
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# create top level folder
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printf "${icon:+IMG:$icon\t}%s\n" "$category_name"
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# sort the applications by their names
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# FIXME: when icon is missing, name is in first column
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printf "$category_apps%s" | sort -f -k 2 | uniq
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}
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category_sort applications-accessories Accessories "$Accessories"
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category_sort applications-development Development "$Development"
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category_sort applications-education Education "$Education"
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category_sort applications-games Games "$Games"
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category_sort applications-graphics Graphics "$Graphics"
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category_sort applications-internet Internet "$Internet"
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category_sort applications-multimedia Multimedia "$Multimedia"
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category_sort applications-office Office "$Office"
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category_sort applications-science Science "$Science"
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category_sort preferences-desktop Settings "$Settings"
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category_sort applications-system System "$System"
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category_sort applications-other Others "$Others"
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