add missing doc

imgbot
Shafkath Shuhan 3 years ago committed by Blaž Hrastnik
parent 7896eefd73
commit 6564257a7b

@ -179,6 +179,10 @@ pub fn from_reader<R: std::io::Read + ?Sized>(
loop { loop {
let mut total_read = 0usize; let mut total_read = 0usize;
// An inner loop is necessary as it is possible that the input buffer
// may not be completely decoded on the first `decode_to_str()` call
// which would happen in cases where the output buffer is filled to
// capacity.
loop { loop {
let (result, read, written, ..) = decoder.decode_to_str( let (result, read, written, ..) = decoder.decode_to_str(
&slice[total_read..], &slice[total_read..],
@ -252,6 +256,10 @@ pub async fn to_writer<'a, W: tokio::io::AsyncWriteExt + Unpin + ?Sized>(
let is_empty = chunk.is_empty(); let is_empty = chunk.is_empty();
let mut total_read = 0usize; let mut total_read = 0usize;
// An inner loop is necessary as it is possible that the input buffer
// may not be completely encoded on the first `encode_from_utf8()` call
// which would happen in cases where the output buffer is filled to
// capacity.
loop { loop {
let (result, read, written, ..) = let (result, read, written, ..) =
encoder.encode_from_utf8(&chunk[total_read..], &mut buf[total_written..], is_empty); encoder.encode_from_utf8(&chunk[total_read..], &mut buf[total_written..], is_empty);

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