chore: initialize my-pi extension bundle

pi-rtk-optimizer/src/rtk-command-environment.ts

@@ -0,0 +1,77 @@
+import { join } from "node:path";
+
+import { splitLeadingEnvAssignments } from "./shell-env-prefix.js";
+
+const RTK_DB_PATH_ENV_NAME = "RTK_DB_PATH";
+const SINGLE_QUOTED_SHELL_VALUE_PATTERN = "'(?:'\\\\''|[^'])*'";
+const SHELL_ENV_VALUE_PATTERN = `(?:"[^"]*"|${SINGLE_QUOTED_SHELL_VALUE_PATTERN}|[^\\s;]+)`;
+const RTK_DB_PATH_ASSIGNMENT_PATTERN = new RegExp(
+	`(?:^|\\s)RTK_DB_PATH=${SHELL_ENV_VALUE_PATTERN}(?=\\s|$)`,
+);
+const RTK_DB_PATH_EXPORT_PATTERN = new RegExp(`^export\\s+RTK_DB_PATH=${SHELL_ENV_VALUE_PATTERN}(?=\\s*(?:;|$))`);
+
+function resolveTemporaryDirectory(): string {
+	if (process.platform === "win32") {
+		const windowsTempDir = process.env.TEMP ?? process.env.TMP;
+		if (windowsTempDir && windowsTempDir.trim()) {
+			return windowsTempDir;
+		}
+
+		const localAppData = process.env.LOCALAPPDATA;
+		if (localAppData && localAppData.trim()) {
+			return join(localAppData, "Temp");
+		}
+
+		const userProfile = process.env.USERPROFILE;
+		if (userProfile && userProfile.trim()) {
+			return join(userProfile, "AppData", "Local", "Temp");
+		}
+
+		const systemRoot = process.env.SystemRoot ?? process.env.WINDIR;
+		if (systemRoot && systemRoot.trim()) {
+			return join(systemRoot, "Temp");
+		}
+
+		return "C:/Windows/Temp";
+	}
+
+	const posixTempDir = process.env.TMPDIR ?? process.env.TMP;
+	if (posixTempDir && posixTempDir.trim()) {
+		return posixTempDir;
+	}
+
+	return "/tmp";
+}
+
+function getTemporaryRtkHistoryDbPath(): string {
+	return join(resolveTemporaryDirectory(), "pi-rtk-optimizer", "history.db");
+}
+
+function quoteForShellEnv(value: string): string {
+	const normalizedValue = process.platform === "win32" ? value.replace(/\\/g, "/") : value;
+	return `'${normalizedValue.replace(/'/g, `'\\''`)}'`;
+}
+
+function hasLeadingRtkDbPathAssignment(command: string): boolean {
+	const trimmed = command.trimStart();
+	return (
+		RTK_DB_PATH_ASSIGNMENT_PATTERN.test(splitLeadingEnvAssignments(trimmed).envPrefix) ||
+		RTK_DB_PATH_EXPORT_PATTERN.test(trimmed)
+	);
+}
+
+function hasInheritedRtkDbPath(): boolean {
+	return Boolean(process.env[RTK_DB_PATH_ENV_NAME]?.trim());
+}
+
+export function applyRtkCommandEnvironment(command: string): string {
+	if (!command.trim()) {
+		return command;
+	}
+
+	if (hasLeadingRtkDbPathAssignment(command) || hasInheritedRtkDbPath()) {
+		return command;
+	}
+
+	return `export ${RTK_DB_PATH_ENV_NAME}=${quoteForShellEnv(getTemporaryRtkHistoryDbPath())}; ${command}`;
+}