filecopy

type Checker interface {
	/*
		Tests the existence of a file or directory at a given path. Returns true if and only if the file or
		directory exists.
	*/
	Exists(path string) bool

	/*
		Filemode returns the os.FileMode of the file with the given path. If the file does not exist, returns
		an error with tag ErrFileNotFound.
	*/
	Filemode(path string) (os.FileMode, error)
}

type Copier interface {
	/*
		Copy copies a source file to a destination file. File contents are copied. File mode and permissions
		(as described in http://golang.org/pkg/os/#FileMode) are copied.

		Directories are copied, along with their contents.

		Copying a file or directory to itself succeeds but does not modify the filesystem.

		Symbolic links are not followed and are copied provided they refer to a file or directory being copied
		(otherwise a non-nil error is returned). The only exception is copying a symbolic link to itself, which
		always succeeds.
	*/
	Copy(destPath string, srcPath string) error
}

type ErrorId string

type FileError struct {
	ErrorId ErrorId
	Cause   error
}