mirror of
https://github.com/tailscale/tailscale.git
synced 2025-10-31 00:01:40 +01:00
71029cea2d
This updates all source files to use a new standard header for copyright and license declaration. Notably, copyright no longer includes a date, and we now use the standard SPDX-License-Identifier header. This commit was done almost entirely mechanically with perl, and then some minimal manual fixes. Updates #6865 Signed-off-by: Will Norris <will@tailscale.com>
38 lines
963 B
Go
38 lines
963 B
Go
// Copyright (c) Tailscale Inc & AUTHORS
|
|
// SPDX-License-Identifier: BSD-3-Clause
|
|
|
|
// Package lineread reads lines from files. It's not fancy, but it got repetitive.
|
|
package lineread
|
|
|
|
import (
|
|
"bufio"
|
|
"io"
|
|
"os"
|
|
)
|
|
|
|
// File opens name and calls fn for each line. It returns an error if the Open failed
|
|
// or once fn returns an error.
|
|
func File(name string, fn func(line []byte) error) error {
|
|
f, err := os.Open(name)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
defer f.Close()
|
|
return Reader(f, fn)
|
|
}
|
|
|
|
// Reader calls fn for each line.
|
|
// If fn returns an error, Reader stops reading and returns that error.
|
|
// Reader may also return errors encountered reading and parsing from r.
|
|
// To stop reading early, use a sentinel "stop" error value and ignore
|
|
// it when returned from Reader.
|
|
func Reader(r io.Reader, fn func(line []byte) error) error {
|
|
bs := bufio.NewScanner(r)
|
|
for bs.Scan() {
|
|
if err := fn(bs.Bytes()); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
return bs.Err()
|
|
}
|