29 lines
1008 B
Swift
29 lines
1008 B
Swift
import Foundation
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extension FileHandle {
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/// Reads until EOF using the throwing FileHandle API and returns empty `Data` on failure.
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///
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/// Important: Avoid legacy, non-throwing FileHandle read APIs (e.g. `readDataToEndOfFile()` and
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/// `availableData`). They can raise Objective-C exceptions when the handle is closed/invalid, which
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/// will abort the process.
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func readToEndSafely() -> Data {
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do {
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return try self.readToEnd() ?? Data()
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} catch {
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return Data()
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}
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}
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/// Reads up to `count` bytes using the throwing FileHandle API and returns empty `Data` on failure/EOF.
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///
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/// Important: Use this instead of `availableData` in callbacks like `readabilityHandler` to avoid
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/// Objective-C exceptions terminating the process.
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func readSafely(upToCount count: Int) -> Data {
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do {
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return try self.read(upToCount: count) ?? Data()
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} catch {
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return Data()
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}
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}
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}
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