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23 lines
585 B
Go
23 lines
585 B
Go
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//+build windows
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package file
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import (
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"os"
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)
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// FindUnusedDriveLetter searches mounted drive list on the system
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// (starting from Z: and ending at D:) for unused drive letter.
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// Returns the letter found (like 'Z') or zero value.
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func FindUnusedDriveLetter() (driveLetter uint8) {
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// Do not use A: and B:, because they are reserved for floppy drive.
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// Do not use C:, because it is normally used for main drive.
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for l := uint8('Z'); l >= uint8('D'); l-- {
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_, err := os.Stat(string(l) + ":" + string(os.PathSeparator))
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if os.IsNotExist(err) {
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return l
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}
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}
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return 0
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}
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