commit | 053dbd006f81a230434f712314aacfb540b52cc5 | [log] [tgz] |
---|---|---|
author | Máximo Cuadros <mcuadros@gmail.com> | Mon Nov 27 19:20:57 2017 |
committer | GitHub <noreply@github.com> | Mon Nov 27 19:20:57 2017 |
tree | ae30cd5f49477e6a72aa28df0b0ec146b9f5f7b0 | |
parent | 8067977d87d9eb5abf9080359b978b32335a507b [diff] | |
parent | 0aa82040a3fbb8e4e76847b33e122c5f4cad1837 [diff] |
Merge pull request #48 from keybase/strib/gh-truncate fs: add `Truncate` method to `File` interface
The missing interface filesystem abstraction for Go. Billy implements an interface based on the os
standard library, allowing to develop applications without dependency on the underlying storage. Make virtually free implement an mocks and testing over filesystem operations.
Billy was born as part of src-d/go-git project.
go get -u gopkg.in/src-d/go-billy.v4/...
Billy exposes filesystems using the Filesystem
interface. Each filesystem implementation gives you a New
method, whose arguments depend on the implementation itself, that returns a new Filesystem
.
The following example caches in memory all readable files in a directory from any billy's filesystem implementation.
func LoadToMemory(origin billy.Filesystem, path string) (*memory.Memory, error) {
memory := memory.New()
files, err := origin.ReadDir("/")
if err != nil {
return nil, err
}
for _, file := range files {
if file.IsDir() {
continue
}
src, err := origin.Open(file.Name())
if err != nil {
return nil, err
}
dst, err := memory.Create(file.Name())
if err != nil {
return nil, err
}
if _, err = io.Copy(dst, src); err != nil {
return nil, err
}
if err := dst.Close(); err != nil {
return nil, err
}
if err := src.Close(); err != nil {
return nil, err
}
}
return memory, nil
}
The library billy deals with storage systems and Billy is the name of a well-known, IKEA bookcase. That's it.
Apache License Version 2.0, see LICENSE