public readFile()

in packages/web-ide-fs/src/browserfs/GitLabReadableFileSystem.ts [203:235]

• 29 lines of code
• 4 McCabe index (conditional complexity)

  public readFile(
    fname: string,
    encoding: string,
    flag: FileFlag,
    cb: BFSCallback<string | Buffer>,
  ): void {
    // Get file.
    // eslint-disable-next-line consistent-return
    this.open(fname, flag, 0x1a4, (err: ApiError | undefined | null, fd?: File) => {
      if (err) {
        return cb(err);
      }

      const fdCast = <NoSyncFile<GitLabReadableFileSystem>>fd;
      const fdBuff = <Buffer>fdCast.getBuffer();
      if (encoding === null) {
        cb(null, copyingSlice(fdBuff));
      } else {
        try {
          const str = fdBuff.toString(<BufferEncoding>encoding);

          cb(null, str);
        } catch {
          cb(
            new ApiError(
              ErrorCode.EINVAL,
              `Could not convert buffer to string (path: ${fname}, encoding: ${encoding})`,
            ),
          );
        }
      }
    });
  }