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path/filepath: delete the deprecated joinNonEmpty and isUNC

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Change-Id: I4ce88b2e8e8d24afb63ca7246ce0c418fcb02c9e
Reviewed-on: https://go-review.googlesource.com/c/go/+/564715
Reviewed-by: Damien Neil <dneil@google.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Auto-Submit: Damien Neil <dneil@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
This commit is contained in:
Andy Pan 2024-02-16 13:53:05 +08:00 committed by Gopher Robot
parent b899e0b8cc
commit e803857813
1 changed files with 0 additions and 40 deletions
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40
src/path/filepath/path_windows.go
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@ -277,46 +277,6 @@ func join(elem []string) string {
return Clean(b.String())
}
// joinNonEmpty is like join, but it assumes that the first element is non-empty.
func joinNonEmpty(elem []string) string {
if len(elem[0]) == 2 && elem[0][1] == ':' {
// First element is drive letter without terminating slash.
// Keep path relative to current directory on that drive.
// Skip empty elements.
i := 1
for ; i < len(elem); i++ {
if elem[i] != "" {
break
}
}
return Clean(elem[0] + strings.Join(elem[i:], string(Separator)))
}
// The following logic prevents Join from inadvertently creating a
// UNC path on Windows. Unless the first element is a UNC path, Join
// shouldn't create a UNC path. See golang.org/issue/9167.
p := Clean(strings.Join(elem, string(Separator)))
if !isUNC(p) {
return p
}
// p == UNC only allowed when the first element is a UNC path.
head := Clean(elem[0])
if isUNC(head) {
return p
}
// head + tail == UNC, but joining two non-UNC paths should not result
// in a UNC path. Undo creation of UNC path.
tail := Clean(strings.Join(elem[1:], string(Separator)))
if head[len(head)-1] == Separator {
return head + tail
}
return head + string(Separator) + tail
}
// isUNC reports whether path is a UNC path.
func isUNC(path string) bool {
return len(path) > 1 && isSlash(path[0]) && isSlash(path[1])
}
func sameWord(a, b string) bool {
return strings.EqualFold(a, b)
}