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Refactor Keyring Swift API
Factor JSON table parsing into a separate method of ServalRestfulClient so it can be re-used by other APIs.
This commit is contained in:
Andrew Bettison
parent
bc637e1a5c
commit
12bc773d4d
@ -28,6 +28,47 @@ public class ServalKeyring {
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public let name : String?
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}
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private static func unpackIdentity(fromJsonDict json: [String: Any?]) throws -> Identity
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{
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guard let sidany = json["sid"] else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "missing \"sid\" element")
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}
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guard let sidhex = sidany as? String else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "sid value is not String")
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}
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guard let sid = SubscriberId(fromHex: sidhex) else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "sid value is not hex: \(sidhex)")
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}
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guard let idany = json["identity"] else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "missing \"identity\" element")
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}
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guard let idhex = idany as? String else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "identity value is not String")
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}
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guard let identity = SubscriberId(fromHex: idhex) else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "identity value is not hex: \(idhex)")
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}
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var did: String?
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if let value = json["did"], value != nil {
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guard let text = value! as? String else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "did value is not String")
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}
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if !text.isEmpty {
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did = text
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}
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}
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var name: String?
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if let value = json["name"], value != nil {
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guard let text = value! as? String else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "name value is not String")
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}
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if !text.isEmpty {
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name = text
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}
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}
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return Identity(sid: sid, identity: identity, did: did, name: name)
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}
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public static func listIdentities(client: ServalRestfulClient = ServalRestfulClient(),
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pin: String? = nil,
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completionHandler: @escaping ([Identity]?, Error?) -> Void)
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@ -46,104 +87,16 @@ public class ServalKeyring {
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completionHandler(nil, ServalRestfulClient.Exception.requestFailed(statusCode: statusCode!))
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return
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}
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guard let json_top = json as? [String: Any] else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "root is not JSON object"))
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return
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}
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var column_count = 0
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var sid_index = -1
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var identity_index = -1
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var did_index = -1
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var name_index = -1
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guard let header = json_top["header"] as? [String] else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "missing 'header' element"))
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return
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}
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for text in header {
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if text == "sid" {
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sid_index = column_count
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}
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else if text == "identity" {
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identity_index = column_count
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}
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else if text == "did" {
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did_index = column_count
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}
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else if text == "name" {
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name_index = column_count
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}
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column_count += 1
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}
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guard sid_index != -1 else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "missing 'sid' column"))
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return
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}
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guard identity_index != -1 else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "missing 'identity' column"))
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return
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}
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guard let rows = json_top["rows"] as? [[Any]] else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "missing 'rows' element"))
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return
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}
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var identities : [Identity] = []
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for row in rows {
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guard row.count == column_count else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "row has \(row.count) elements; should be \(column_count)"))
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do {
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for row in try ServalRestfulClient.transformJsonTable(json: json) {
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identities.append(try unpackIdentity(fromJsonDict: row))
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}
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}
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catch let e {
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completionHandler(nil, e)
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return
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}
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var opt_sid : SubscriberId?
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var opt_identity : SubscriberId?
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var did : String?
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var name : String?
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if sid_index != -1 {
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guard let hex = row[sid_index] as? String else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "sid value is not String"))
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return
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}
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opt_sid = SubscriberId(fromHex: hex)
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guard opt_sid != nil else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "sid value is not hex: \(hex)"))
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return
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}
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}
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if identity_index != -1 {
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guard let hex = row[identity_index] as? String else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "identity value is not String"))
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return
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}
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opt_identity = SubscriberId(fromHex: hex)
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guard opt_sid != nil else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "identity value is not hex: \(hex)"))
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return
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}
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}
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if did_index != -1 {
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let value = row[did_index]
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if value as? NSNull == nil {
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guard let text = value as? String else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "did value is not String: \(value)"))
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return
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}
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if !text.isEmpty {
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did = text
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}
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}
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}
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if name_index != -1 {
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let value = row[name_index]
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if value as? NSNull == nil {
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guard let text = value as? String else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "name value is not String: \(value)"))
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return
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}
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if !text.isEmpty {
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name = text
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}
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}
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}
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identities.append(Identity(sid: opt_sid!, identity: opt_identity!, did: did, name: name))
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}
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completionHandler(identities, nil)
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}!
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}
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@ -161,37 +114,22 @@ public class ServalKeyring {
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completionHandler(nil, error)
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return
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}
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do {
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guard successStatusCodes.contains(statusCode!) else {
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completionHandler(nil, ServalRestfulClient.Exception.requestFailed(statusCode: statusCode!))
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return
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throw ServalRestfulClient.Exception.requestFailed(statusCode: statusCode!)
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}
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guard let json_top = json as? [String: Any] else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "root is not JSON object"))
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return
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throw ServalRestfulClient.Exception.invalidJson(reason: "root is not JSON object")
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}
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guard let json_identity = json_top["identity"] as? [String: Any] else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "'identity' is not JSON object"))
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return
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}
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guard let sid_hex = json_identity["sid"] as? String else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "'sid' is not String"))
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return
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completionHandler(try unpackIdentity(fromJsonDict: json_identity), nil)
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}
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guard let identity_hex = json_identity["identity"] as? String else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "'identity' is not String"))
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return
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catch let e {
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completionHandler(nil, e)
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}
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guard let sid = SubscriberId(fromHex: sid_hex) else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "invalid 'sid': \(sid_hex)"))
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return
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}
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guard let identity = SubscriberId(fromHex: identity_hex) else {
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completionHandler(nil, ServalRestfulClient.Exception.invalidJson(reason: "invalid 'identity': \(identity_hex)"))
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return
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}
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let did = json_identity["did"] as? String ?? ""
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let name = json_identity["name"] as? String ?? ""
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completionHandler(Identity(sid: sid, identity: identity, did: did, name: name), nil)
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}!
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}
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@ -117,4 +117,26 @@ public class ServalRestfulClient {
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dataTask.resume()
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return Request(urlSession: session, dataTask: dataTask)
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}
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public static func transformJsonTable(json: Any?) throws -> [[String: Any?]]
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{
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guard let json_top = json as? [String: Any] else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "root is not JSON object")
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}
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guard let header = json_top["header"] as? [String] else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "missing 'header' element")
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}
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guard let rows = json_top["rows"] as? [[Any]] else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "missing 'rows' element")
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}
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var ret : [[String: Any?]] = []
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for row in rows {
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guard row.count == header.count else {
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throw ServalRestfulClient.Exception.invalidJson(reason: "row has \(row.count) elements; should be \(header.count)")
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}
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ret.append(Dictionary(uniqueKeysWithValues: zip(header, row.map { $0 as? NSNull == nil ? $0 : nil })))
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}
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return ret
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}
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}
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@ -148,7 +148,6 @@ test_keyringSetDidName() {
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assert_stdout_keyvalue sid "$SIDA1"
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assert_stdout_keyvalue identity "$IDA1"
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assert_stdout_keyvalue did "123456"
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assert_stdout_keyvalue name ""
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executeOk_servald keyring list
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assert_keyring_list 1
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assertStdoutGrep --stderr --matches=1 "^$SIDA1:$IDA1:123456:\$"
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