33 lines
704 B
Go
33 lines
704 B
Go
//go:build windows
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// +build windows
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package file
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import (
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"regexp"
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"strings"
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)
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// Pattern to match a windows absolute path: "c:\" and similar
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var isAbsWinDrive = regexp.MustCompile(`^[a-zA-Z]\:\\`)
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// UNCPath converts an absolute Windows path to a UNC long path.
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//
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// It does nothing on non windows platforms
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func UNCPath(l string) string {
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// If prefix is "\\", we already have a UNC path or server.
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if strings.HasPrefix(l, `\\`) {
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// If already long path, just keep it
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if strings.HasPrefix(l, `\\?\`) {
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return l
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}
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// Trim "\\" from path and add UNC prefix.
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return `\\?\UNC\` + strings.TrimPrefix(l, `\\`)
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}
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if isAbsWinDrive.MatchString(l) {
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return `\\?\` + l
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}
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return l
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}
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