lines.rs.html -- source

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adler

aho_corasick

packed

teddy

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async_compression

codec

flate

decoder.rs encoder.rs mod.rs

gzip

decoder.rs encoder.rs header.rs mod.rs

stream

generic

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macros

decoder.rs encoder.rs mod.rs

lib.rs macros.rs unshared.rs util.rs

async_trait

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base64

read

decoder.rs mod.rs

write

encoder.rs mod.rs

chunked_encoder.rs decode.rs display.rs encode.rs lib.rs tables.rs

bitflags

bytes

buf

ext

chain.rs limit.rs mod.rs reader.rs take.rs writer.rs

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fmt

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eui48

fallible_iterator

flate2

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ffi

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zlib

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bufreader.rs crc.rs lib.rs mem.rs zio.rs

fnv

foreign_types

foreign_types_shared

form_urlencoded

lib.rs query_encoding.rs

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mod.rs queue.rs sink_impl.rs

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sink

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stream

task

mod.rs spawn.rs

fns.rs lib.rs never.rs

h2

hashbrown

external_trait_impls

raw

bitmask.rs mod.rs sse2.rs

lib.rs macros.rs map.rs scopeguard.rs set.rs

http

header

map.rs mod.rs name.rs value.rs

uri

authority.rs builder.rs mod.rs path.rs port.rs scheme.rs

byte_str.rs convert.rs error.rs extensions.rs lib.rs method.rs request.rs response.rs status.rs version.rs

http_body

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httparse

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avx2.rs mod.rs sse42.rs

iter.rs lib.rs macros.rs

httpdate

httpdate.rs lib.rs

hyper

body

aggregate.rs body.rs mod.rs to_bytes.rs

client

connect

dns.rs http.rs mod.rs

conn.rs dispatch.rs mod.rs pool.rs service.rs

common

io

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buf.rs drain.rs exec.rs lazy.rs mod.rs never.rs task.rs watch.rs

proto

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h2

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server

accept.rs conn.rs mod.rs shutdown.rs tcp.rs

service

http.rs make.rs mod.rs oneshot.rs util.rs

error.rs headers.rs lib.rs rt.rs upgrade.rs

hyper_tls

client.rs lib.rs stream.rs

idna

lib.rs punycode.rs uts46.rs

indexmap

map

core

equivalent.rs lib.rs macros.rs map.rs mutable_keys.rs set.rs util.rs

iovec

sys

ipnet

ipext.rs ipnet.rs ipnet_serde.rs lib.rs parser.rs

itoa

lazy_static

inline_lazy.rs lib.rs

libc

unix

linux_like

linux

gnu

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x86_64

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fixed_width_ints.rs lib.rs macros.rs

linked_hash_map

log

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matches

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fallback.rs iter.rs lib.rs naive.rs

mime

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mime_guess

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miniz_oxide

deflate

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inflate

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lib.rs shared.rs

mio

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imp

net2

sys

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ext.rs lib.rs socket.rs tcp.rs udp.rs unix.rs utils.rs

num_integer

average.rs lib.rs roots.rs

num_traits

ops

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once_cell

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openssl

openssl_probe

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osproto

common.rs identity.rs lib.rs

percent_encoding

pin_project

pin_project_internal

pin_project

attribute.rs derive.rs mod.rs

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pin_project_lite

pin_utils

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proc_macro2

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proc_macro_hack

error.rs iter.rs lib.rs parse.rs quote.rs

proc_macro_nested

quote

ext.rs format.rs ident_fragment.rs lib.rs runtime.rs spanned.rs to_tokens.rs

regex

regex_syntax

reqwest

async_impl

body.rs client.rs decoder.rs mod.rs multipart.rs request.rs response.rs

connect.rs error.rs into_url.rs lib.rs proxy.rs redirect.rs tls.rs util.rs

rustc_serialize

base64.rs collection_impls.rs hex.rs json.rs lib.rs serialize.rs

ryu

buffer

pretty

exponent.rs mantissa.rs mod.rs

common.rs d2s.rs d2s_full_table.rs d2s_intrinsics.rs digit_table.rs f2s.rs f2s_intrinsics.rs lib.rs

serde

de

from_primitive.rs ignored_any.rs impls.rs mod.rs utf8.rs value.rs

private

de.rs macros.rs mod.rs ser.rs

ser

fmt.rs impls.rs impossible.rs mod.rs

export.rs integer128.rs lib.rs macros.rs

serde_derive

internals

ast.rs attr.rs case.rs check.rs ctxt.rs mod.rs symbol.rs

bound.rs de.rs dummy.rs fragment.rs lib.rs pretend.rs ser.rs try.rs

serde_json

features_check

io

value

de.rs from.rs index.rs mod.rs partial_eq.rs ser.rs

de.rs error.rs iter.rs lib.rs macros.rs map.rs number.rs read.rs ser.rs

serde_urlencoded

ser

key.rs mod.rs pair.rs part.rs value.rs

serde_yaml

value

de.rs from.rs index.rs mod.rs partial_eq.rs ser.rs

de.rs error.rs lib.rs mapping.rs number.rs path.rs ser.rs

slab

socket2

sys

lib.rs sockaddr.rs socket.rs utils.rs

syn

thread_local

cached.rs lib.rs thread_id.rs unreachable.rs

time

display.rs duration.rs lib.rs parse.rs sys.rs

tinyvec

array.rs arrayvec.rs lib.rs tinyvec.rs

tokio

future

maybe_done.rs mod.rs poll_fn.rs ready.rs try_join.rs

io

loom

std

atomic_ptr.rs atomic_u16.rs atomic_u32.rs atomic_u64.rs atomic_u8.rs atomic_usize.rs mod.rs unsafe_cell.rs

macros

cfg.rs join.rs loom.rs mod.rs pin.rs ready.rs scoped_tls.rs select.rs support.rs thread_local.rs try_join.rs

net

tcp

incoming.rs listener.rs mod.rs split.rs split_owned.rs stream.rs

park

either.rs mod.rs thread.rs

runtime

stream

all.rs any.rs chain.rs collect.rs empty.rs filter.rs filter_map.rs fold.rs fuse.rs iter.rs map.rs merge.rs mod.rs next.rs once.rs pending.rs skip.rs skip_while.rs stream_map.rs take.rs take_while.rs timeout.rs try_next.rs

sync

task

blocking.rs mod.rs spawn.rs yield_now.rs

time

driver

atomic_stack.rs entry.rs handle.rs mod.rs registration.rs stack.rs

wheel

level.rs mod.rs stack.rs

clock.rs delay.rs delay_queue.rs error.rs instant.rs interval.rs mod.rs throttle.rs timeout.rs

util

slab

addr.rs entry.rs generation.rs mod.rs page.rs shard.rs slot.rs stack.rs

bit.rs intrusive_double_linked_list.rs linked_list.rs mod.rs rand.rs trace.rs wake.rs

coop.rs lib.rs prelude.rs

tokio_macros

entry.rs lib.rs select.rs

tokio_tls

tokio_util

codec

bytes_codec.rs decoder.rs encoder.rs framed.rs framed_read.rs framed_write.rs length_delimited.rs lines_codec.rs mod.rs

tower_service

tracing

dispatcher.rs field.rs instrument.rs level_filters.rs lib.rs macros.rs span.rs stdlib.rs subscriber.rs

tracing_core

callsite.rs dispatcher.rs event.rs field.rs lib.rs metadata.rs parent.rs span.rs stdlib.rs subscriber.rs

tracing_futures

executor

lib.rs stdlib.rs

try_lock

unicase

unicode

ascii.rs lib.rs

unicode_bidi

char_data

mod.rs tables.rs

deprecated.rs explicit.rs format_chars.rs implicit.rs level.rs lib.rs prepare.rs

unicode_normalization

__test_api.rs decompose.rs lib.rs lookups.rs no_std_prelude.rs normalize.rs perfect_hash.rs quick_check.rs recompose.rs stream_safe.rs tables.rs

unicode_xid

lib.rs tables.rs

url

host.rs lib.rs origin.rs parser.rs path_segments.rs quirks.rs slicing.rs

waiter

want

yaml_rust

emitter.rs lib.rs parser.rs scanner.rs yaml.rs

use futures_core::stream::Stream;
use futures_core::task::{Context, Poll};
use futures_io::AsyncBufRead;
use std::io;
use std::mem;
use std::pin::Pin;
use super::read_line::read_line_internal;
use pin_project::pin_project;

/// Stream for the [`lines`](super::AsyncBufReadExt::lines) method.

#[pin_project]
#[derive(Debug)]
#[must_use = "streams do nothing unless polled"]
pub struct Lines<R> {
    #[pin]
    reader: R,
    buf: String,
    bytes: Vec<u8>,
    read: usize,
}

impl<R: AsyncBufRead> Lines<R> {
    pub(super) fn new(reader: R) -> Self {
        Self {
            reader,
            buf: String::new(),
            bytes: Vec::new(),
            read: 0,
        }
    }
}

impl<R: AsyncBufRead> Stream for Lines<R> {
    type Item = io::Result<String>;

    fn poll_next(self: Pin<&mut Self>, cx: &mut Context<'_>) -> Poll<Option<Self::Item>> {
        let this = self.project();
        let n = ready!(read_line_internal(this.reader, cx, this.buf, this.bytes, this.read))?;
        if n == 0 && this.buf.is_empty() {
            return Poll::Ready(None)
        }
        if this.buf.ends_with('\n') {
            this.buf.pop();
            if this.buf.ends_with('\r') {
                this.buf.pop();
            }
        }
        Poll::Ready(Some(Ok(mem::replace(this.buf, String::new()))))
    }
}

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