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The missing interface filesystem abstraction for Go

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- test-building-binaries-for-supported-os.sh
- - chroot.go
  - chroot_test.go
- - mount.go
  - mount_test.go
- - polyfill.go
  - polyfill_test.go
- - temporal.go
  - temporal_test.go
- memory.go
- memory_test.go
- storage.go
- os.go
- os_posix.go
- os_test.go
- os_windows.go
- basic.go
- chroot.go
- common_posix.go
- common_windows.go
- dir.go
- fs.go
- mock.go
- symlink.go
- tempfile.go
- glob.go
- glob_test.go
- util.go
- util_test.go
.gitignore
.travis.yml
appveyor.yml
DCO
fs.go
fs_test.go
go.mod
go.sum
LICENSE
MAINTAINERS
Makefile
README.md

// repository documentation

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## WE CONTINUE THE DEVELOPMENT AT [go-git/go-billy](https://github.com/go-git/go-billy). This repository is abandoned, and no further updates will be done on the code base, nor issue/prs will be answered or attended.

# go-billy [![GoDoc](https://godoc.org/gopkg.in/src-d/go-billy.v4?status.svg)](https://godoc.org/gopkg.in/src-d/go-billy.v4) [![Build Status](https://travis-ci.com/src-d/go-billy.svg)](https://travis-ci.com/src-d/go-billy) [![Build status](https://ci.appveyor.com/api/projects/status/vx2qn6vlakbi724t?svg=true)](https://ci.appveyor.com/project/mcuadros/go-billy) [![codecov](https://codecov.io/gh/src-d/go-billy/branch/master/graph/badge.svg)](https://codecov.io/gh/src-d/go-billy)

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. Makes it virtually free to implement mocks and testing over filesystem operations.

Billy was born as part of [src-d/go-git](https://github.com/src-d/go-git) project.

## Installation

```go
go get -u gopkg.in/src-d/go-billy.v4/...
```

## Usage

Billy exposes filesystems using the
[`Filesystem` interface](https://godoc.org/github.com/src-d/go-billy#Filesystem).
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.

```go
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
}
```

## Why billy?

The library billy deals with storage systems and Billy is the name of a well-known, IKEA
bookcase. That's it.

## License

Apache License Version 2.0, see [LICENSE](LICENSE)

go-billy

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