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// Copied from https://github.com/ricochet2200/go-disk-usage
// Copyright 2011 Rick Smith.
// Use of this source code is governed by a public domain
// license that can be found in the LICENSE.ricochet2200 file.
//
package du
import (
"syscall"
"unsafe"
)
type DiskUsage struct {
freeBytes int64
totalBytes int64
availBytes int64
}
// Returns an object holding the disk usage of volumePath
// This function assumes volumePath is a valid path
func NewDiskUsage(volumePath string) *DiskUsage {
h := syscall.MustLoadDLL("kernel32.dll")
c := h.MustFindProc("GetDiskFreeSpaceExW")
du := &DiskUsage{}
c.Call(
uintptr(unsafe.Pointer(syscall.StringToUTF16Ptr(volumePath))),
uintptr(unsafe.Pointer(&du.freeBytes)),
uintptr(unsafe.Pointer(&du.totalBytes)),
uintptr(unsafe.Pointer(&du.availBytes)))
return du
}
// Total free bytes on file system
func (this *DiskUsage) Free() uint64 {
return uint64(this.freeBytes)
}
// Total available bytes on file system to an unpriveleged user
func (this *DiskUsage) Available() uint64 {
return uint64(this.availBytes)
}
// Total size of the file system
func (this *DiskUsage) Size() uint64 {
return uint64(this.totalBytes)
}
// Total bytes used in file system
func (this *DiskUsage) Used() uint64 {
return this.Size() - this.Free()
}
// Percentage of use on the file system
func (this *DiskUsage) Usage() float32 {
return float32(this.Used()) / float32(this.Size())
}
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