75 lines
2.7 KiB
C#
75 lines
2.7 KiB
C#
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using System;
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using System.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using AmazonInternal.ThirdParty;
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using UnityEngine;
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public class AmazonUtils {
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/// <summary>
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/// Compares two versions to see which is greater.
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/// </summary>
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/// <param name="a">Version to compare against second param</param>
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/// <param name="b">Version to compare against first param</param>
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/// <returns>-1 if the first version is smaller, 1 if the first version is greater, 0 if they are equal</returns>
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public static int CompareVersions (string a, string b) {
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var versionA = VersionStringToInts (a);
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var versionB = VersionStringToInts (b);
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for (var i = 0; i < Mathf.Max (versionA.Length, versionB.Length); i++) {
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if (VersionPiece (versionA, i) < VersionPiece (versionB, i))
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return -1;
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if (VersionPiece (versionA, i) > VersionPiece (versionB, i))
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return 1;
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}
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return 0;
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}
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private static int VersionPiece (IList<int> versionInts, int pieceIndex) {
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return pieceIndex < versionInts.Count ? versionInts[pieceIndex] : 0;
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}
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private static int[] VersionStringToInts (string version) {
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if( version == null )
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return new int[] { 0,0,0 };
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int piece;
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string[] split = version.Split ('.');
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return split.Select (v => int.TryParse (v, NumberStyles.Any, CultureInfo.InvariantCulture, out piece) ? piece : 0).ToArray ();
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}
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public static Uri UrlFromString (string url) {
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if (string.IsNullOrEmpty (url)) return null;
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try {
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return new Uri (url);
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} catch {
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Debug.LogError ("Invalid URL: " + url);
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return null;
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}
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}
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public static string EncodeArgs (params string[] args) {
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return Json.Serialize (args);
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}
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// Will return a non-null array of strings with at least 'min' non-null string values at the front.
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public static string[] DecodeArgs (string argsJson, int min) {
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var err = false;
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var args = Json.Deserialize (argsJson) as List<object>;
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if (args == null) {
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Debug.LogError ("Invalid JSON data: " + argsJson);
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args = new List<object> ();
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err = true;
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}
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if (args.Count < min) {
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if (!err) // Don't double up the error messages for invalid JSON
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Debug.LogError ("Missing one or more values: " + argsJson + " (expected " + min + ")");
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while (args.Count < min)
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args.Add ("");
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}
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return args.Select (v => v.ToString ()).ToArray ();
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}
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public static string InvariantCultureToString (object obj) {
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return string.Format (CultureInfo.InvariantCulture, "{0}", obj);
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}
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}
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