fs#openSync TypeScript Examples

private readLogFileFromLastPosition(event: ProjectConfigChangedEvent): void {
    const { projectRoot } = event;
    if (this.outputChannel) {
      let fileHandle;
      try {
        fileHandle = openSync(
          path.join(
            projectRoot.fsPath,
            DBTProjectLog.LOG_PATH,
            DBTProjectLog.LOG_FILE
          ),
          "r"
        );
        const chunkSize = 1024 * 1024;
        const buffer = Buffer.alloc(chunkSize);
        while (true) {
          const bytesRead = readSync(
            fileHandle,
            buffer,
            0,
            buffer.length,
            this.logPosition
          );
          if (!bytesRead) {
            break;
          }
          this.logPosition += bytesRead;
          this.outputChannel.appendLine(buffer.toString("utf8", 0, bytesRead));
        }
      } catch (error) {
        console.log("Could not read log file", error);
      } finally {
        if (fileHandle) {
          closeSync(fileHandle);
        }
      }
    }
  }

export async function updateFileModificationDate(filePath: string, timeTaken: string): Promise<void> {
  const time = new Date(timeTaken);

  try {
    utimesSync(filePath, time, time);
  } catch (error) {
    closeSync(openSync(filePath, 'w'));
  }
}

export function loadMicropythonFlashImage(filename: string, rp2040: RP2040) {
  const file = openSync(filename, 'r');
  const buffer = new Uint8Array(MICROPYTHON_FS_BLOCKSIZE);
  let flashAddress = MICROPYTHON_FS_FLASH_START;
  while (readSync(file, buffer) === buffer.length) {
    rp2040.flash.set(buffer, flashAddress);
    flashAddress += buffer.length;
  }
  closeSync(file);
}

export function loadUF2(filename: string, rp2040: RP2040) {
  const file = openSync(filename, 'r');
  const buffer = new Uint8Array(512);
  while (readSync(file, buffer) === buffer.length) {
    const block = decodeBlock(buffer);
    const { flashAddress, payload } = block;
    rp2040.flash.set(payload, flashAddress - FLASH_START_ADDRESS);
  }
  closeSync(file);
}

public provideDocumentFormattingEdits(
    document: TextDocument,
    options: FormattingOptions,
    token: CancellationToken
  ): ProviderResult<TextEdit[]> {
    // Get the user's settings.
    let insertSpaces: boolean =
      Workspace.getConfiguration("editor").get("insertSpaces") || false;
    let UseTab: string = insertSpaces ? "Never" : "Always";
    let tabSize: number =
      Workspace.getConfiguration("editor").get("tabSize") || 2;

    let workspaceFolder = Workspace.getWorkspaceFolder(document.uri);
    let defaultStyles: string[] =
      Workspace.getConfiguration("sourcepawn", workspaceFolder).get(
        "formatterSettings"
      ) || [];

    let default_style: string = "{" + defaultStyles.join(", ") + "}";

    // Apply user settings
    default_style = default_style
      .replace(/\${TabSize}/g, tabSize.toString())
      .replace(/\${UseTab}/g, UseTab);
    const start = new Position(0, 0);
    const end = new Position(
      document.lineCount - 1,
      document.lineAt(document.lineCount - 1).text.length
    );
    const range = new Range(start, end);
    const tempFile = join(__dirname, "temp_format.sp");
    let file = openSync(tempFile, "w", 0o765);
    writeSync(file, document.getText());
    closeSync(file);
    let text = this.clangFormat(tempFile, "utf-8", default_style);

    // If process failed,
    if (text === undefined) {
      window.showErrorMessage(
        "The formatter failed to run, check the console for more details."
      );
      return undefined;
    }
    text = fixFormatting(text);
    return [new TextEdit(range, text)];
  }

/**
 * Lint a TextDocument object and add its diagnostics to the
 * @param  {TextDocument} document    The document to lint.
 * @returns void
 */
export function refreshDiagnostics(document: TextDocument): void {
  // Check if the user specified not to enable the linter for this file.
  const range = new Range(0, 0, 1, 0);
  const text = document.getText(range);

  // Check if the setting to activate the linter is set to true.
  const workspaceFolder = Workspace.getWorkspaceFolder(document.uri);
  const enableLinter: boolean = Workspace.getConfiguration(
    "sourcepawn",
    workspaceFolder
  ).get<boolean>("enableLinter");

  // Stop early if linter is disabled.
  if (
    text === "" ||
    /\/\/linter=false/.test(text) ||
    !enableLinter ||
    extname(document.fileName) !== ".sp"
  ) {
    compilerDiagnostics.set(document.uri, []);
    return;
  }

  const tmpPath = join(
    extensions.getExtension("Sarrus.sourcepawn-vscode").extensionPath,
    "tmpCompiled.smx"
  );
  const tmpFile = join(__dirname, "temp.sp");
  const spcomp =
    Workspace.getConfiguration("sourcepawn", workspaceFolder).get<string>(
      "SpcompPath"
    ) || "";

  if (!spcomp) {
    return;
  }

  // Get the previous instance of spcomp if it exists
  let throttle = throttles[document.uri.path];
  if (throttle === undefined) {
    throttle = new TimeoutFunction();
    throttles[document.uri.path] = throttle;
  }

  // Cancel the previous instance and start a new one.
  throttle.cancel();
  throttle.start(() => {
    const mainPath = findMainPath(document.uri);

    // Separate the cases if we are using mainPath or not.
    let scriptingFolder: string;
    let filePath: string;
    if (mainPath !== undefined && mainPath !== "") {
      scriptingFolder = dirname(mainPath);
      filePath = mainPath;
    } else {
      scriptingFolder = dirname(document.uri.fsPath);
      let file = openSync(tmpFile, "w", 0o765);
      writeSync(file, document.getText());
      closeSync(file);
      filePath = tmpFile;
    }

    // Generate compiler arguments.
    const compilerArgs = [
      "-i" +
        Workspace.getConfiguration("sourcepawn", workspaceFolder).get(
          "SourcemodHome"
        ) || "",
      "-i" + scriptingFolder,
      "-i" + join(scriptingFolder, "include"),
      "-v0",
      filePath,
      "-o" + tmpPath,
    ];

    // Add a space at the beginning of every element, for security.
    Workspace.getConfiguration("sourcepawn", workspaceFolder)
      .get<string[]>("linterCompilerOptions")
      .forEach((e) => compilerArgs.push(" " + e));

    // Add the optional includes folders.
    getAllPossibleIncludeFolderPaths(document.uri, true).forEach((e) =>
      compilerArgs.push(`-i${e}`)
    );

    // Run the blank compile.
    execFile(spcomp, compilerArgs, (error, stdout) => {
      // If it compiled successfully, delete the temporary files.
      if (!error) {
        unlink(tmpPath, (err) => {
          if (err) {
            console.error(err);
          }
        });
      }
      parseSPCompErrors(
        stdout,
        compilerDiagnostics,
        mainPath === undefined ? document.uri.fsPath : undefined
      );
    });
  }, 300);
}