将Swift字符串数组转换为C字符串数组指针

var cStrings: UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>?

cStrings = UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>.allocate(capacity: swiftStrings.count)
cStrings.initialize(repeating: nil, count: swiftStrings.count)

swiftStrings.map { (string) -> UnsafeMutablePointer<Int8>? in
    return strdup(string)
}.enumerated().forEach { (index, cString) in
    cStrings?[index] = cString
}

withUnsafeMutablePointer(to: &cStrings) { (pointer) -> Void in
    // 在这里使用C字符串数组指针
}

import Foundation

func convertToCStrings(swiftStrings: [String]) -> UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>? {
    var cStrings: UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>?
    
    cStrings = UnsafeMutablePointer<UnsafeMutablePointer<Int8>?>.allocate(capacity: swiftStrings.count)
    cStrings.initialize(repeating: nil, count: swiftStrings.count)
    
    swiftStrings.map { (string) -> UnsafeMutablePointer<Int8>? in
        return strdup(string)
    }.enumerated().forEach { (index, cString) in
        cStrings?[index] = cString
    }
    
    return cStrings
}

let swiftStrings = ["Hello", "World"]
let cStrings = convertToCStrings(swiftStrings: swiftStrings)

withUnsafeMutablePointer(to: &cStrings) { (pointer) -> Void in
    // 在这里使用C字符串数组指针
}

// 记得释放内存
cStrings?.deinitialize(count: swiftStrings.count)
cStrings?.deallocate()