34 lines
793 B
Go
34 lines
793 B
Go
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//go:build windows
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package cmd
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import (
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"fmt"
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"syscall"
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"unsafe"
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)
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func checkDiskSpace(dir string) (string, error) {
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kernel32 := syscall.NewLazyDLL("kernel32.dll")
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getDiskFreeSpaceEx := kernel32.NewProc("GetDiskFreeSpaceExW")
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var freeBytesAvailable, totalBytes, totalFreeBytes int64
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dirPtr, _ := syscall.UTF16PtrFromString(dir)
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ret, _, err := getDiskFreeSpaceEx.Call(
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uintptr(unsafe.Pointer(dirPtr)),
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uintptr(unsafe.Pointer(&freeBytesAvailable)),
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uintptr(unsafe.Pointer(&totalBytes)),
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uintptr(unsafe.Pointer(&totalFreeBytes)),
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)
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if ret == 0 {
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return "", fmt.Errorf("GetDiskFreeSpaceEx: %w", err)
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}
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gb := float64(freeBytesAvailable) / (1024 * 1024 * 1024)
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msg := fmt.Sprintf("%.1f GB free", gb)
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if gb < 10 {
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return "!" + msg + " (low)", nil
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}
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return msg, nil
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}
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