82 lines
2.6 KiB
Go
82 lines
2.6 KiB
Go
package driver
|
|
|
|
import "time"
|
|
|
|
// FileInfo returns information about a given path. Inspired by os.FileInfo,
|
|
// it elides the base name method for a full path instead.
|
|
type FileInfo interface {
|
|
// Path provides the full path of the target of this file info.
|
|
Path() string
|
|
|
|
// Size returns current length in bytes of the file. The return value can
|
|
// be used to write to the end of the file at path. The value is
|
|
// meaningless if IsDir returns true.
|
|
Size() int64
|
|
|
|
// ModTime returns the modification time for the file. For backends that
|
|
// don't have a modification time, the creation time should be returned.
|
|
ModTime() time.Time
|
|
|
|
// IsDir returns true if the path is a directory.
|
|
IsDir() bool
|
|
}
|
|
|
|
// NOTE(stevvooe): The next two types, FileInfoFields and FileInfoInternal
|
|
// should only be used by storagedriver implementations. They should moved to
|
|
// a "driver" package, similar to database/sql.
|
|
|
|
// FileInfoFields provides the exported fields for implementing FileInfo
|
|
// interface in storagedriver implementations. It should be used with
|
|
// InternalFileInfo.
|
|
type FileInfoFields struct {
|
|
// Path provides the full path of the target of this file info.
|
|
Path string
|
|
|
|
// Size is current length in bytes of the file. The value of this field
|
|
// can be used to write to the end of the file at path. The value is
|
|
// meaningless if IsDir is set to true.
|
|
Size int64
|
|
|
|
// ModTime returns the modification time for the file. For backends that
|
|
// don't have a modification time, the creation time should be returned.
|
|
ModTime time.Time
|
|
|
|
// IsDir returns true if the path is a directory.
|
|
IsDir bool
|
|
}
|
|
|
|
// FileInfoInternal implements the FileInfo interface. This should only be
|
|
// used by storagedriver implementations that don't have a specialized
|
|
// FileInfo type.
|
|
type FileInfoInternal struct {
|
|
FileInfoFields
|
|
}
|
|
|
|
var (
|
|
_ FileInfo = FileInfoInternal{}
|
|
_ FileInfo = &FileInfoInternal{}
|
|
)
|
|
|
|
// Path provides the full path of the target of this file info.
|
|
func (fi FileInfoInternal) Path() string {
|
|
return fi.FileInfoFields.Path
|
|
}
|
|
|
|
// Size returns current length in bytes of the file. The return value can
|
|
// be used to write to the end of the file at path. The value is
|
|
// meaningless if IsDir returns true.
|
|
func (fi FileInfoInternal) Size() int64 {
|
|
return fi.FileInfoFields.Size
|
|
}
|
|
|
|
// ModTime returns the modification time for the file. For backends that
|
|
// don't have a modification time, the creation time should be returned.
|
|
func (fi FileInfoInternal) ModTime() time.Time {
|
|
return fi.FileInfoFields.ModTime
|
|
}
|
|
|
|
// IsDir returns true if the path is a directory.
|
|
func (fi FileInfoInternal) IsDir() bool {
|
|
return fi.FileInfoFields.IsDir
|
|
}
|