On Friday, February 14, 2014 11:47:47 AM UTC-5, Laurent Sertorius wrote:
>
> I use readFileSync method, but i want to read this file in many blocks (1
> block = 10 000 lines of my bigfile)
>
> fs.readFileSync('./myBigFic').toString().split('\n').forEach(function
> (line) {
>
> An idea ?
>
You can use open[1], read[2], and close[3] manually. That way you're not
blocking and reading everything in at once, but you can pause whenever you
want and read however much you want at a time.
Another option is to use fs.createReadStream() as Alex suggested and just
.pause() the stream (and .resume() again once you're read to process more
data) if you're using 'data' events or stop calling .read() temporarily if
you are using the stream that way.
[1] http://nodejs.org/api/fs.html#fs_fs_open_path_flags_mode_callback
[2]
http://nodejs.org/api/fs.html#fs_fs_read_fd_buffer_offset_length_position_callback
[3] http://nodejs.org/api/fs.html#fs_fs_close_fd_callback
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