mirror of
https://github.com/DNSCrypt/dnscrypt-proxy.git
synced 2024-12-29 00:30:30 +01:00
45 lines
1.1 KiB
Markdown
45 lines
1.1 KiB
Markdown
|
# safefile
|
||
|
|
|
||
|
|
[](https://travis-ci.org/dchest/safefile) [](https://ci.appveyor.com/project/dchest/safefile)
|
||
|
|
|
||
|
|
Go package safefile implements safe "atomic" saving of files.
|
||
|
|
|
||
|
|
Instead of truncating and overwriting the destination file, it creates a
|
||
|
|
temporary file in the same directory, writes to it, and then renames the
|
||
|
|
temporary file to the original name when calling Commit.
|
||
|
|
|
||
|
|
|
||
|
|
### Installation
|
||
|
|
|
||
|
|
```
|
||
|
|
$ go get github.com/dchest/safefile
|
||
|
|
```
|
||
|
|
|
||
|
|
### Documentation
|
||
|
|
|
||
|
|
<https://godoc.org/github.com/dchest/safefile>
|
||
|
|
|
||
|
|
### Example
|
||
|
|
|
||
|
|
```go
|
||
|
|
f, err := safefile.Create("/home/ken/report.txt", 0644)
|
||
|
|
if err != nil {
|
||
|
|
// ...
|
||
|
|
}
|
||
|
|
// Created temporary file /home/ken/sf-ppcyksu5hyw2mfec.tmp
|
||
|
|
|
||
|
|
defer f.Close()
|
||
|
|
|
||
|
|
_, err = io.WriteString(f, "Hello world")
|
||
|
|
if err != nil {
|
||
|
|
// ...
|
||
|
|
}
|
||
|
|
// Wrote "Hello world" to /home/ken/sf-ppcyksu5hyw2mfec.tmp
|
||
|
|
|
||
|
|
err = f.Commit()
|
||
|
|
if err != nil {
|
||
|
|
// ...
|
||
|
|
}
|
||
|
|
// Renamed /home/ken/sf-ppcyksu5hyw2mfec.tmp to /home/ken/report.txt
|
||
|
|
```
|