48 lines
1.2 KiB
Rust
48 lines
1.2 KiB
Rust
/*
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* This file is part of espanso.
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*
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* Copyright (C) 2019-2021 Federico Terzi
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*
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* espanso is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* espanso is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with espanso. If not, see <https://www.gnu.org/licenses/>.
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*/
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use anyhow::Result;
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// Unbuffered version, necessary to concurrently write
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// to the buffer if necessary (when receiving sync messages)
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pub fn read_line<R: std::io::Read>(stream: R) -> Result<Option<String>> {
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let mut buffer = Vec::new();
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let mut is_eof = true;
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for byte_res in stream.bytes() {
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let byte = byte_res?;
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if byte == 10 {
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// Newline
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break;
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} else {
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buffer.push(byte);
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}
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is_eof = false;
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}
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if is_eof {
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Ok(None)
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} else {
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Ok(Some(String::from_utf8(buffer)?))
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}
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}
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