dotcloud/docker

package system // import "github.com/docker/docker/pkg/system"

import (
    "os"
    "time"
)

// StatT type contains status of a file. It contains metadata
// like permission, size, etc about a file.
type StatT struct {
    mode os.FileMode
    size int64
    mtim time.Time
}

// Size returns file's size.
func (s StatT) Size() int64 {
    return s.size
}

// Mode returns file's permission mode.
func (s StatT) Mode() os.FileMode {
    return s.mode
}

// Mtim returns file's last modification time.
func (s StatT) Mtim() time.Time {
    return s.mtim
}

// Stat takes a path to a file and returns
// a system.StatT type pertaining to that file.
//
// Throws an error if the file does not exist
func Stat(path string) (*StatT, error) {
    fi, err := os.Stat(path)
    if err != nil {
        return nil, err
    }
    return fromStatT(&fi)
}

// fromStatT converts a os.FileInfo type to a system.StatT type
func fromStatT(fi *os.FileInfo) (*StatT, error) {
    return &StatT{
        size: (*fi).Size(),
        mode: (*fi).Mode(),
        mtim: (*fi).ModTime(),
    }, nil
}