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[TAR] Remove pre-Swift 5.0 crash workaround

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This commit is contained in:
Timofey Solomko
2021-07-21 19:34:48 +03:00
parent aba14af8c5
commit 7646ec34a1
1 changed files with 2 additions and 15 deletions
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Sources/TAR/TarEntryInfo.swift
+2 -15
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@@ -404,21 +404,8 @@ public struct TarEntryInfo: ContainerEntryInfo {
// Looking for the last slash in the potential prefix. -1 if not found.
// It determines the end of the actual prefix and the beginning of the updated name field.
#if (swift(>=4.1.50) || (swift(>=3.4) && !swift(>=4.0))) || !os(Linux)
let lastPrefixSlashIndex = nameData.prefix(upTo: maxPrefixLength)
.range(of: Data([0x2f]), options: .backwards)?.lowerBound ?? -1
#else
// TODO: This is a workaround for runtime crash in `Data.prefix(upTo:).range(of:options:)` on Linux with
// Swift 4.1. It seems like it is fixed in 4.2 and master snapshots, so it will be removed when Swift
// 5.0 is released.
var lastPrefixSlashIndex = -1
for i in stride(from: maxPrefixLength - 1, through: 0, by: -1) {
if nameData[i] == 0x2f {
lastPrefixSlashIndex = i
break
}
}
#endif
let lastPrefixSlashIndex = nameData.prefix(upTo: maxPrefixLength)
.range(of: Data([0x2f]), options: .backwards)?.lowerBound ?? -1
let updatedNameLength = nameData.count - lastPrefixSlashIndex - 1
let prefixLength = lastPrefixSlashIndex