first commit

launcher/launcher.sh

@@ -0,0 +1,105 @@
+#!/usr/bin/env bash
+
+CACHE_DIR="/tmp/qs_launcher"
+
+DRUN_CACHE="$CACHE_DIR/drun.txt"
+RUN_CACHE="$CACHE_DIR/run.txt"
+
+mkdir -p "$CACHE_DIR"
+
+
+get_desktop_files() {
+    IFS=':' read -ra DIRS <<< \
+        "${XDG_DATA_DIRS:-/usr/local/share:/usr/share}"
+
+    for dir in "${DIRS[@]}"; do
+        APP_DIR="$dir/applications"
+
+        [ -d "$APP_DIR" ] || continue
+
+        find "$APP_DIR" \
+            -maxdepth 1 \
+            -name "*.desktop" \
+            2>/dev/null
+    done | while read -r f; do
+
+        name=$(
+            grep -m1 '^Name=' "$f" \
+            | cut -d= -f2-
+        )
+
+        exec=$(
+            grep -m1 '^Exec=' "$f" \
+            | cut -d= -f2- \
+            | sed 's/%[fFuUik]//g' \
+            | xargs
+        )
+
+        type=$(
+            grep -m1 '^Type=' "$f" \
+            | cut -d= -f2-
+        )
+
+        nodisplay=$(
+            grep -m1 '^NoDisplay=' "$f" \
+            | cut -d= -f2- \
+            | tr '[:upper:]' '[:lower:]'
+        )
+
+        icon=$(
+            grep -m1 '^Icon=' "$f" \
+            | cut -d= -f2-
+        )
+
+        [[ "$type" == "Application" ]] || continue
+        [[ "$nodisplay" != "true" ]] || continue
+        [[ -n "$name" ]] || continue
+
+        printf "%s\t%s\t%s\t%s\n" \
+            "$name" \
+            "$exec" \
+            "$(basename "$f" .desktop)" \
+            "$icon"
+    done
+}
+
+
+get_binaries() {
+    compgen -c \
+        | sort -u \
+        | head -600 \
+        | awk '{
+            print $1 "\t" $1 "\t" $1
+        }'
+}
+
+
+build_drun() {
+    get_desktop_files \
+        | sort -f -t$'\t' -k1,1 \
+        | awk -F'\t' '!seen[$1]++'
+}
+
+build_run() {
+    {
+        get_desktop_files
+        get_binaries
+    } \
+        | sort -f -t$'\t' -k1,1 \
+        | awk -F'\t' '!seen[$1]++'
+}
+
+
+update_cache() {
+    build_drun > "$DRUN_CACHE.tmp"
+    build_run  > "$RUN_CACHE.tmp"
+
+    mv "$DRUN_CACHE.tmp" "$DRUN_CACHE"
+    mv "$RUN_CACHE.tmp"  "$RUN_CACHE"
+}
+
+
+if [ "$1" == "--update-only" ]; then
+    update_cache
+    exit 0
+fi