Function getRpath

src/util.ts:98–132

(quote = false, overwriteConfig?: string)

}

export async function getRpath(quote = false, overwriteConfig?: string): Promise<string | undefined> {
    let rpath: string | undefined = '';

    // try the config entry specified in the function arg:
    if (overwriteConfig) {
        rpath = config().get<string>(overwriteConfig);
    }

    // try the os-specific config entry for the rpath:
    const configEntry = getRPathConfigEntry();
    rpath ||= config().get<string>(configEntry);
    rpath &&= substituteVariables(rpath);

    // read from path/registry:
    rpath ||= await getRpathFromSystem();

    // represent all invalid paths (undefined, '', null) as undefined:
    rpath ||= undefined;

    if (!rpath) {
        // inform user about missing R path:
        void vscode.window.showErrorMessage(`Cannot find R to use for help, package installation etc. Change setting r.${configEntry} to R path.`);
    } else if (quote && /^[^'"].* .*[^'"]$/.exec(rpath)) {
        // if requested and rpath contains spaces, add quotes:
        rpath = `"${rpath}"`;
    } else if (!quote) {
        rpath = rpath.replace(/^"(.*)"$/, '$1');
        rpath = rpath.replace(/^'(.*)'$/, '$1');
    } else if (process.platform === 'win32' && /^'.* .*'$/.exec(rpath)) {
        // replace single quotes with double quotes on windows
        rpath = rpath.replace(/^'(.*)'$/, '"$1"');
    }

    return rpath;
}

export async function getRterm(): Promise<string | undefined> {
    const configEntry = getRPathConfigEntry(true);