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windows: Fix insecure CRT warning about getenv. #67

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windows: Fix insecure CRT warning about getenv. #67

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10 changes: 10 additions & 0 deletions PythonKit/PythonLibrary.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -284,7 +284,17 @@ extension PythonLibrary {
}

var value: String? {
#if os(Windows)
var cString: UnsafeMutablePointer<CChar>? = nil
var size: size_t = 0
let result = _dupenv_s(&cString, &size, key)
defer {
if let cString { free(cString) }
}
guard result == 0, let cString else { return nil }
#else
guard let cString = getenv(key) else { return nil }
#endif
let value = String(cString: cString)
guard !value.isEmpty else { return nil }
return value
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