copy

README

copy

copy copies directories recursively.

Example Usage

err := Copy("your/directory", "your/directory.copy")

Advanced Usage

// Options specifies optional actions on copying.
type Options struct {

	// OnSymlink can specify what to do on symlink
	OnSymlink func(src string) SymlinkAction

	// OnDirExists can specify what to do when there is a directory already existing in destination.
	OnDirExists func(src, dest string) DirExistsAction

	// Skip can specify which files should be skipped
	Skip func(src string) (bool, error)

	// AddPermission to every entry,
	// NO MORE THAN 0777
	AddPermission os.FileMode

	// Sync file after copy.
	// Useful in case when file must be on the disk
	// (in case crash happens, for example),
	// at the expense of some performance penalty
	Sync bool

	// Preserve the atime and the mtime of the entries
	// On linux we can preserve only up to 1 millisecond accuracy
	PreserveTimes bool

	// Preserve the uid and the gid of all entries.
	PreserveOwner bool

	// The byte size of the buffer to use for copying files.
	// If zero, the internal default buffer of 32KB is used.
	// See https://golang.org/pkg/io/#CopyBuffer for more information.
	CopyBufferSize uint
}

// For example...
opt := Options{
	Skip: func(src string) (bool, error) {
		return strings.HasSuffix(src, ".git"), nil
	},
}
err := Copy("your/directory", "your/directory.copy", opt)

Issues

• https://github.com/otiai10/copy/issues

License

Documentation

Index

• func Copy(src, dest string, opt ...Options) error
• type DirExistsAction
• type Options
• type SymlinkAction

Examples

• Copy
• Options

Functions

func Copy

func Copy(src, dest string, opt ...Options) error

Copy copies src to dest, doesn't matter if src is a directory or a file.

Example

err := Copy("test/data/example", "test/data.copy/example")
fmt.Println("Error:", err)
info, _ := os.Stat("test/data.copy/example")
fmt.Println("IsDir:", info.IsDir())

Output:

Error: <nil>
IsDir: true

Types

type DirExistsAction

type DirExistsAction int

DirExistsAction represents what to do on dest dir.

const (
	// Merge preserves or overwrites existing files under the dir (default behavior).
	Merge DirExistsAction = iota
	// Replace deletes all contents under the dir and copy src files.
	Replace
	// Untouchable does nothing for the dir, and leaves it as it is.
	Untouchable
)

type Options

type Options struct {

	// OnSymlink can specify what to do on symlink
	OnSymlink func(src string) SymlinkAction

	// OnDirExists can specify what to do when there is a directory already existing in destination.
	OnDirExists func(src, dest string) DirExistsAction

	// Skip can specify which files should be skipped
	Skip func(src string) (bool, error)

	// AddPermission to every entities,
	// NO MORE THAN 0777
	AddPermission os.FileMode

	// Sync file after copy.
	// Useful in case when file must be on the disk
	// (in case crash happens, for example),
	// at the expense of some performance penalty
	Sync bool

	// Preserve the atime and the mtime of the entries.
	// On linux we can preserve only up to 1 millisecond accuracy.
	PreserveTimes bool

	// Preserve the uid and the gid of all entries.
	PreserveOwner bool

	// The byte size of the buffer to use for copying files.
	// If zero, the internal default buffer of 32KB is used.
	// See https://golang.org/pkg/io/#CopyBuffer for more information.
	CopyBufferSize uint
	// contains filtered or unexported fields
}

Options specifies optional actions on copying.

Example

err := Copy(
	"test/data/example",
	"test/data.copy/example_with_options",
	Options{
		Skip: func(src string) (bool, error) {
			return strings.HasSuffix(src, ".git-like"), nil
		},
		OnSymlink: func(src string) SymlinkAction {
			return Skip
		},
		AddPermission: 0200,
	},
)
fmt.Println("Error:", err)
_, err = os.Stat("test/data.copy/example_with_options/.git-like")
fmt.Println("Skipped:", os.IsNotExist(err))

Output:

Error: <nil>
Skipped: true

type SymlinkAction

type SymlinkAction int

SymlinkAction represents what to do on symlink.

const (
	// Deep creates hard-copy of contents.
	Deep SymlinkAction = iota
	// Shallow creates new symlink to the dest of symlink.
	Shallow
	// Skip does nothing with symlink.
	Skip
)