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Create a C callable _NSCurrentDirectoryPath function #1545

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Create a C callable _NSCurrentDirectoryPath function #1545

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24 changes: 24 additions & 0 deletions Sources/FoundationEssentials/FileManager/FileManager+Directories.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -510,3 +510,27 @@ extension _FileManagerImpl {
#endif
}
}

@_cdecl("_NSCurrentDirectoryPath")
internal func _NSCurrentDirectoryPath(_ buffer: UnsafeMutablePointer<CChar>?, _ size: Int) -> Bool {
guard let buffer = buffer, size > 0 else {
return false // Invalid parameters
}

let currentPath = FileManager.default.currentDirectoryPath

// Convert to C string representation
let cString = currentPath.utf8CString
let requiredSize = cString.count // includes null terminator

if requiredSize > size {
return false // Buffer too small
}

// Copy the string to the buffer
cString.withUnsafeBufferPointer { sourceBuffer in
buffer.initialize(from: sourceBuffer.baseAddress!, count: requiredSize)
}

return true // Success
}