42 lines
618 B
Go
42 lines
618 B
Go
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package fs
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import (
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"path/filepath"
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)
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// HasPathPrefix returns true if p is a subdir of (or a file within) base. It
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// assumes a file system which is case sensitive. For relative paths, false is
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// returned.
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func HasPathPrefix(base, p string) bool {
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if filepath.VolumeName(base) != filepath.VolumeName(p) {
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return false
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}
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if !filepath.IsAbs(base) || !filepath.IsAbs(p) {
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return false
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}
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base = filepath.Clean(base)
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p = filepath.Clean(p)
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if base == p {
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return true
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}
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for {
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dir := filepath.Dir(p)
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if base == dir {
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return true
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}
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if p == dir {
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break
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}
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p = dir
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}
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return false
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}
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