initial commit

fluxer_app/src/utils/ReplaceCommandUtils.ts

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+/*
+ * Copyright (C) 2026 Fluxer Contributors
+ *
+ * This file is part of Fluxer.
+ *
+ * Fluxer is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Fluxer is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with Fluxer. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+const REPLACE_REGEX = /^s\/([^/]+)\/([^/]+)(\/g)?$/;
+
+interface ReplaceCommand {
+	source: string;
+	replacement: string;
+	global: boolean;
+}
+
+export function parseReplaceCommand(content: string): ReplaceCommand | null {
+	const match = content.match(REPLACE_REGEX);
+	if (!match) {
+		return null;
+	}
+
+	const [, source, replacement, globalFlag] = match;
+	return {
+		source,
+		replacement,
+		global: !!globalFlag,
+	};
+}
+
+export function executeReplaceCommand(text: string, command: ReplaceCommand): string {
+	const regex = new RegExp(command.source, command.global ? 'g' : '');
+	return text.replace(regex, command.replacement);
+}
+
+export function isReplaceCommand(content: string): boolean {
+	return REPLACE_REGEX.test(content);
+}