gf/os/gfile/gfile_size.go

// Copyright 2017-2018 gf Author(https://github.com/gogf/gf). All Rights Reserved.
//
// This Source Code Form is subject to the terms of the MIT License.
// If a copy of the MIT was not distributed with this file,
// You can obtain one at https://github.com/gogf/gf.

package gfile

import (
	"fmt"
	"os"
)

// Size returns the size of file specified by <path> in byte.
func Size(path string) int64 {
	s, e := os.Stat(path)
	if e != nil {
		return 0
	}
	return s.Size()
}

// ReadableSize formats size of file given by <path>, for more human readable.
func ReadableSize(path string) string {
	return FormatSize(Size(path))
}

// FormatSize formats size <raw> for more human readable.
func FormatSize(raw int64) string {
	var r float64 = float64(raw)
	var t float64 = 1024
	var d float64 = 1

	if r < t {
		return fmt.Sprintf("%.2fB", r/d)
	}

	d *= 1024
	t *= 1024

	if r < t {
		return fmt.Sprintf("%.2fK", r/d)
	}

	d *= 1024
	t *= 1024

	if r < t {
		return fmt.Sprintf("%.2fM", r/d)
	}

	d *= 1024
	t *= 1024

	if r < t {
		return fmt.Sprintf("%.2fG", r/d)
	}

	d *= 1024
	t *= 1024

	if r < t {
		return fmt.Sprintf("%.2fT", r/d)
	}

	d *= 1024
	t *= 1024

	if r < t {
		return fmt.Sprintf("%.2fP", r/d)
	}

	return "TooLarge"
}