[Test]//@Test(expected = IllegalArgumentException.class)
public void TestInvalidLanguageIllegalArgumentException()
{
Assert.Throws <ArgumentException>(() => Languages.GetInstance("thereIsNoSuchLanguage"));
}
[Test]//@Test(expected = IllegalStateException.class)
public void TestInvalidLangIllegalStateException()
{
Assert.Throws <InvalidOperationException>(() => Lang.LoadFromResource("thisIsAMadeUpResourceName", Languages.GetInstance(NameType.GENERIC)));
}
/// <summary>
/// Loads language rules from a resource.
/// <para/>
/// In normal use, you will obtain instances of Lang through the <see cref="GetInstance(NameType)"/> method.
/// You will only need to call this yourself if you are developing custom language mapping rules.
/// </summary>
/// <param name="languageRulesResourceName">The fully-qualified or partially-qualified resource name to load.</param>
/// <param name="languages">The languages that these rules will support.</param>
/// <returns>A Lang encapsulating the loaded language-guessing rules.</returns>
public static Lang LoadFromResource(string languageRulesResourceName, Languages languages)
{
IList <LangRule> rules = new List <LangRule>();
Stream lRulesIS = typeof(Lang).GetTypeInfo().Assembly.FindAndGetManifestResourceStream(typeof(Lang), languageRulesResourceName);
if (lRulesIS == null)
{
throw new InvalidOperationException("Unable to resolve required resource:" + LANGUAGE_RULES_RN);
}
using (TextReader reader = new StreamReader(lRulesIS, ResourceConstants.ENCODING))
{
bool inExtendedComment = false;
string rawLine;
while ((rawLine = reader.ReadLine()) != null)
{
string line = rawLine;
if (inExtendedComment)
{
// check for closing comment marker, otherwise discard doc comment line
if (line.EndsWith(ResourceConstants.EXT_CMT_END, StringComparison.Ordinal))
{
inExtendedComment = false;
}
}
else
{
if (line.StartsWith(ResourceConstants.EXT_CMT_START, StringComparison.Ordinal))
{
inExtendedComment = true;
}
else
{
// discard comments
int cmtI = line.IndexOf(ResourceConstants.CMT, StringComparison.Ordinal);
if (cmtI >= 0)
{
line = line.Substring(0, cmtI - 0);
}
// trim leading-trailing whitespace
line = line.Trim();
if (line.Length == 0)
{
continue; // empty lines can be safely skipped
}
// split it up
string[] parts = WHITESPACE.Split(line).TrimEnd();
if (parts.Length != 3)
{
throw new ArgumentException("Malformed line '" + rawLine +
"' in language resource '" + languageRulesResourceName + "'");
}
Regex pattern = new Regex(parts[0], RegexOptions.Compiled);
string[] langs = TOKEN.Split(parts[1]).TrimEnd();
bool accept = parts[2].Equals("true", StringComparison.Ordinal);
rules.Add(new LangRule(pattern, new JCG.HashSet <string>(langs), accept));
}
}
}
}
return(new Lang(rules, languages));
}
private Lang(IList <LangRule> rules, Languages languages)
{
this.rules = rules.AsReadOnly();
this.languages = languages;
}
private Lang(IList <LangRule> rules, Languages languages)
{
this.rules = Collections.UnmodifiableList(rules);
this.languages = languages;
}