SIL.CoreImpl.PalasoWritingSystemManager.Create C# (CSharp) Method

		public IWritingSystem Create(LanguageSubtag languageSubtag, ScriptSubtag scriptSubtag, RegionSubtag regionSubtag, VariantSubtag variantSubtag)
		{
			if (!languageSubtag.IsValid)
				throw new ArgumentException("Can not create a new writing system with an invalid language tag.");
			PalasoWritingSystem ws;
			lock (m_syncRoot)
				ws = (PalasoWritingSystem)m_localStore.CreateNew();

			ws.LanguageSubtag = languageSubtag;
			ws.ScriptSubtag = scriptSubtag;
			ws.RegionSubtag = regionSubtag;
			ws.VariantSubtag = variantSubtag;
			if (!string.IsNullOrEmpty(languageSubtag.Name))
				ws.Abbreviation = languageSubtag.Name.Length > 3 ? languageSubtag.Name.Substring(0, 3) : languageSubtag.Name;
			else
				ws.Abbreviation = ws.Id;

			CultureInfo ci = MiscUtils.GetCultureForWs(ws.Id);
			if (ci != null)
			{
				ws.SortUsing = WritingSystemDefinition.SortRulesType.OtherLanguage;
				ws.SortRules = ci.Name;
			}

			ws.Modified = false;
			return ws;
		}

        public void GetValidLangCodeForNewLang()
        {
            string storePath       = PrepareTempStore("Store");
            string globalStorePath = PrepareTempStore("GlobalStore");

            EnsureDirectoryIsEmpty(storePath);
            EnsureDirectoryIsEmpty(globalStorePath);

            var globalStore = new GlobalFileWritingSystemStore(globalStorePath);
            var wsManager   = new PalasoWritingSystemManager(
                new LocalFileWritingSystemStore(storePath, globalStore), globalStore);

            Assert.AreEqual("qip", wsManager.GetValidLangTagForNewLang("Qipkey"));
            Assert.AreEqual("sn", wsManager.GetValidLangTagForNewLang("Sn"));
            Assert.AreEqual("eba", wsManager.GetValidLangTagForNewLang("\u00CBbashlish"));             // \u00CB == E with diacritic
            Assert.AreEqual("eee", wsManager.GetValidLangTagForNewLang("\u00CB\u00CB\u00CBlish"));
            // \u00CB == E with diacritic
            Assert.AreEqual("aaa", wsManager.GetValidLangTagForNewLang("U"));

            LanguageSubtag subtag = new LanguageSubtag("qip", "Qipkey", true, null);
            IWritingSystem newWs  = wsManager.Create(subtag, null, null, null);

            wsManager.Set(newWs);
            Assert.AreEqual("aaa", wsManager.GetValidLangTagForNewLang("Qipsing"), "code for 'qip' should already be taken");

            subtag = new LanguageSubtag("aaa", "Qipsing", true, null);
            newWs  = wsManager.Create(subtag, null, null, null);
            wsManager.Set(newWs);
            Assert.AreEqual("aab", wsManager.GetValidLangTagForNewLang("Qipwest"),
                            "code for 'qip' should already be taken twice");

            // ENHANCE: Ideally, we would want to test incrementing the middle and first character,
            // but that would require at least 677 (26^2 + 1) writing systems be created.
        }