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*https://developer.apple.com/documentation/xcode/adding_capabilities_to_your_app
[[File:swift_macos_net_error.png|600px]]
==File==
===JSONにシリアライズしてドキュメントディレクトリへ書き出し===
*データ（Codableを適用する)
<pre>
struct Host : Codable {
var host: String = ""
var ip: String = ""
var macaddr: String = ""
}
</pre>
*読み込み、コレクションに追加、書き出し処理
<pre>
func addHostListDocument(host: WoL.Host) {
let docPath = FileManager.default.urls(for: .documentDirectory, in: .userDomainMask)[0]
let filePath = URL(fileURLWithPath: "hosts.json", relativeTo:docPath)
var hostList: [WoL.Host] = []
let decoder = JSONDecoder()
do {
let rawData = try Data(contentsOf: filePath)
print(rawData)
let tmpHostList = try decoder.decode([WoL.Host].self, from: rawData)
for tmpHost in tmpHostList {
hostList.append(tmpHost)
}
} catch {
print(error)
}
hostList.append(host)
let encoder = JSONEncoder()
do {
let line = try encoder.encode(hostList)
try line.write(to: filePath)
} catch {
print(error)
}
}
</pre>
[[File:swift_json_encode.png|300px]]
=====書式を指定=====
<pre>
let encoder = JSONEncoder()
encoder.outputFormatting = [.prettyPrinted, .sortedKeys]
</pre>
=====Stringに変換=====
<pre>
let json = try encoder.encode(hosts.hosts)
let jsonString = String(data: json, encoding: .utf8)!
print(jsonString)
</pre>
=====画面とオブジェクトを共有する=====
*struct -> class
*ObservableObject を適用
*@Published
*上記を適用すると、Codable に適合させるには、明示的に処理を記述する必要がある
<pre>
class Host : Codable, ObservableObject {
@Published var host: String = ""
@Published var ip: String = ""
@Published var macaddr: String = ""
@Published var comment: String = ""
init(host: String, ip: String, macaddr: String, comment: String) {
self.host = host
self.ip = ip
self.macaddr = macaddr
self.comment = comment
}
init() {}
/// 変換対象プロパティ
enum CodingKeys: CodingKey {
case host
case ip
case macaddr
case comment
}
required init(from decoder: Decoder) throws {
let container = try decoder.container(keyedBy: CodingKeys.self)
host = try container.decode(String.self, forKey: .host)
ip = try container.decode(String.self, forKey: .ip)
macaddr = try container.decode(String.self, forKey: .macaddr)
comment = try container.decode(String.self, forKey: .comment)
}
func encode(to encoder: Encoder) throws {
var container = encoder.container(keyedBy: CodingKeys.self)
try container.encode(host, forKey: .host)
try container.encode(ip, forKey: .ip)
try container.encode(macaddr, forKey: .macaddr)
try container.encode(comment, forKey: .comment)
}
</pre>
===ディレクトリ判定===
----
<pre>
private static let fm = FileManager.default
static func isDirectory(path: String) -> Bool {
var isDir = ObjCBool(false)
fm.fileExists(atPath: path, isDirectory: &isDir)
return isDir.boolValue
}
</pre>
==UI==
}
</pre>
===ディレクトリを選択===
----
<pre>
static func chooseDir() -> String {
let dialog = NSOpenPanel();
dialog.title = "Choose a root directory"
dialog.showsResizeIndicator = true
dialog.showsHiddenFiles = false
dialog.allowsMultipleSelection = false
dialog.canChooseDirectories = true
dialog.canChooseFiles = false
if (dialog.runModal() == NSApplication.ModalResponse.OK) {
let result = dialog.url
if (result != nil) {
let path: String = result!.path
return path
}
}
return "";
}
</pre>
==処理==
===サブプロセスを起動===
----
*プロセスを起動し、arp -a を呼び出し、出力
<pre>
}
</pre>
===非同期処理===
----
<pre>
let c = {
(ip:String) -> String in
let hostName = getHostName(ip: ip) // 時間がかかる処理
return hostName
}
let que = DispatchQueue.global(qos: .default)
for host in hosts.hosts {
print("CALL-\(host.ip)")
que.async { // 非同期処理
let hostname = c(host.ip) // 時間がかかる処理
DispatchQueue.main.async { // 画面に反映
host.host = hostname
}
}
}
</pre>
==[[正規表現]]==
===arp -a の結果からIPアドレスを抜きだす===
print("arp -a result : error")
}
</pre>
===digを経由してBonjourでIPアドレスをホスト名に解決===
*コマンドをswiftで呼び出し dig +short -x 192.168.0.45 @224.0.0.251 -p 5353
<pre>
let outputPipe = Pipe()
let _ = shell(outputPipe,
path:"/usr/bin/dig",
args: "+short",
"-x", ip,
"@224.0.0.251", "-p","5353") // Bonjour IPアドレス
let theTaskData = outputPipe.fileHandleForReading.readDataToEndOfFile()
let stringResult = String(data: theTaskData, encoding: .utf8)
</pre>
===名前を付与してキャプチャ===
----
<pre>
func parseArp(arpResult: String?) {
if let input = arpResult {
do {
let pattern = #".*?(?<ip>[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}).*(?<mac>[0-9a-z]{1,2}:[0-9a-z]{1,2}:[0-9a-z]{1,2}:[0-9a-z]{1,2}:[0-9a-z]{1,2}:[0-9a-z]{1,2})"#
let regex = try NSRegularExpression(pattern: pattern, options:[])
for subinput in input.split(separator: "\r\n") {
let line = String(subinput)
let matches = regex.matches(in: line, options: [], range: _NSRange(0..<line.count))
print(line)
for match in matches {
for name in ["ip", "mac"] {
let matchRange = match.range(withName: name)
if let substrRanget = Range(matchRange, in:line) {
let ip = String(line[substrRanget])
print("\(name):\(ip)")
}
}
}
}
} catch {
print("RegEx fail.")
}
} else {
print("arp -a result : error")
}
}
</pre>
© 2006 矢木浩人
