On 27.02.16 11:49, Steven D'Aprano wrote:
On Thu, 25 Feb 2016 06:30 pm, Chris Angelico wrote:
How bad is it if you over-read?
Pretty bad :-)
Ideally, I'd rather not over-read at all. I'd like the user to be able to
swap from "read N bytes" to "read to the next delimiter" (and possibly
even "read the next line") without losing anything.
If there's absolutely no other way to speed this up by at least a factor of
ten, I'll consider reading into a buffer and losing the ability to mix
different kinds of reads.
If the file is buffered, you can use Chris's receipt, but with peek().
Otherwise you should fall back to slow one-byte read.
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