1 files changed, 148 insertions, 0 deletions
diff --git a/rom-desktop-entry-generator.sh b/rom-desktop-entry-generator.sh
new file mode 100755
index 0000000..6ca56e3
--- /dev/null
+++ b/rom-desktop-entry-generator.sh
@@ -0,0 +1,148 @@
+#!/usr/bin/env sh
+
+# BASEDIR is used to treat this script as a portable application
+BASEDIR="$(dirname "$0")"
+SCRIPTNAME="$(basename "$0" .sh)"
+DESKTOP_ENTRY_OUTPUT_DIR="$BASEDIR/output"
+DESKTOP_ENTRY_INSTALL_DIR="$HOME/.local/share/applications"
+ICON_INSTALL_DIR="$HOME/.local/share/icons/hicolor"
+
+# Build an individual .desktop entry given a name, rompath, and system
+build_desktop_file() {
+	NAME="$1"
+	ROMPATH="$2"
+	SYSTEM="$3"
+	OUTPUT="$DESKTOP_ENTRY_OUTPUT_DIR/${SCRIPTNAME}_${SYSTEM}_${NAME}.desktop"
+
+	echo "Building $NAME"
+
+	# Check validity
+	if [ -z "$NAME" ]; then
+		echo "Skipping: missing NAME"
+		return
+	fi
+	if [ -z "$ROMPATH" ]; then
+		echo "Skipping: missing PATH"
+		return
+	fi
+	if [ -z "$SYSTEM" ]; then
+		echo "Skipping: missing SYSTEM"
+		return
+	fi
+	if [ ! -r "$BASEDIR/config/systems/$SYSTEM" ]; then
+		echo "Skipping: No configuration exists for SYSTEM"
+		return
+	fi
+	# FIXME this warning can have false positives
+	if [ ! -e "$ROMPATH" ]; then
+		echo "Warning: PATH does not exist"
+	fi
+
+	# shellcheck source=/dev/null
+	. "$BASEDIR/config/systems/$SYSTEM"
+
+	mkdir -p "$DESKTOP_ENTRY_OUTPUT_DIR"
+	echo "[Desktop Entry]" > "$OUTPUT"
+	echo "Type=Application" >> "$OUTPUT"
+	echo "Name=$NAME" >> "$OUTPUT"
+	echo "Icon=${SCRIPTNAME}_${SYSTEM}_${NAME}" >> "$OUTPUT"
+	echo "Exec=$launcher $flags $ROMPATH" >> "$OUTPUT"
+	echo "Categories=Game" >> "$OUTPUT"
+
+	echo "Installing $NAME"
+	install_icon "$NAME" "$SYSTEM"
+	install_desktop_file "$OUTPUT"
+}
+
+# empty the output directory
+clean() {
+	rm -rf "$BASEDIR/output"
+}
+
+install_desktop_file() {
+	OUTPUT="$1"
+
+	# TODO look into using xdg-desktop-menu for install and uninstall
+	install "$OUTPUT" "$DESKTOP_ENTRY_INSTALL_DIR"
+}
+
+install_icon() {
+	NAME="$1"
+	SYSTEM="$2"
+	ICON_SOURCE="$BASEDIR/icon/$SYSTEM/$NAME"
+	ICON_EXTENSION=""
+
+	# Try a number of file extensions for the icon source
+	for extension in ".png"; do
+		if [ -r "${ICON_SOURCE}${extension}" ]; then
+			ICON_EXTENSION="$extension"
+			break
+		fi
+	done
+
+	if [ -z "$ICON_EXTENSION" ]; then
+		echo "Icon does not exist or is not readable. Skipping icon installation"
+		return
+	fi
+
+	# Append the extension to the source variable to avoid too much typing
+	ICON_SOURCE="${ICON_SOURCE}${ICON_EXTENSION}"
+
+	for size in "16" "24" "32" "48" "64" "96" "128" "256"; do
+		convert "$ICON_SOURCE" -resize "${size}x${size}"\! "$ICON_INSTALL_DIR/${size}x${size}/apps/${SCRIPTNAME}_${SYSTEM}_$(basename "$ICON_SOURCE")"
+	done
+}
+
+parse_config() {
+	CONFIG_PATH="$1"
+
+	while read -r line; do
+		# Skip comments and empty lines
+		if echo "$line" | grep -q ^#; then
+			continue
+		fi
+		if [ -z "$line" ]; then
+			continue
+		fi
+
+		eval "build_desktop_file $line"
+	done < "$CONFIG_PATH"
+
+	# Workaround to refresh icons
+	touch "$ICON_INSTALL_DIR"
+}
+
+uninstall() {
+	#NAME="$1"
+	#ROMPATH="$2"
+	#SYSTEM="$3"
+
+	find "$BASEDIR/output/" -type f | while read -r file; do
+		echo "Removing $(basename "$file")"
+
+		# Remove icons
+		ICON="$(grep "^Icon=" "$file" | cut -d "=" -f 2)"
+		for size in "16" "24" "32" "48" "64" "96" "128" "256"; do
+			rm -f "$ICON_INSTALL_DIR/${size}x${size}/apps/$ICON"*
+		done
+
+		# Remove the desktop entry
+		rm -f "$DESKTOP_ENTRY_INSTALL_DIR/$(basename "$file")"
+	done
+}
+
+# TODO allow for building without also installing
+MODE="build"
+case "$1" in
+	clean)
+		MODE="clean"
+		eval $MODE
+		;;
+	uninstall)
+		MODE="uninstall"
+		eval $MODE
+		;;
+	*)
+		parse_config "$BASEDIR/config/romlist"
+		;;
+esac