public static bool TryGetSimpleRulesFromCollationNode(string collationXml, out string rules)
{
if (collationXml == null)
{
throw new ArgumentNullException("collationXml");
}
XmlReaderSettings readerSettings = new XmlReaderSettings();
readerSettings.CloseInput = true;
readerSettings.ConformanceLevel = ConformanceLevel.Fragment;
readerSettings.IgnoreWhitespace = true;
rules = null;
using (XmlReader collationReader = XmlReader.Create(new StringReader(collationXml), readerSettings))
{
// simple rules can't deal with any non-default settings
if (XmlHelpers.FindNextElementInSequence(collationReader, "settings", LdmlNodeComparer.CompareElementNames))
{
return(false);
}
if (!XmlHelpers.FindNextElementInSequence(collationReader, "rules", LdmlNodeComparer.CompareElementNames))
{
rules = string.Empty;
return(true);
}
rules = GetSimpleRulesFromRulesNode(collationReader);
}
return(rules != null);
}
protected string GetSpecialValue(XmlReader reader, string ns, string field, string nameSpaceUri)
{
if (!XmlHelpers.FindNextElementInSequence(reader, ns + ":" + field, nameSpaceUri, string.Compare))
{
return(string.Empty);
}
return(reader.GetAttribute("value") ?? string.Empty);
}
public static string GetIcuRulesFromCollationNode(string collationXml)
{
if (collationXml == null)
{
throw new ArgumentNullException("collationXml");
}
XmlReaderSettings readerSettings = new XmlReaderSettings();
readerSettings.CloseInput = true;
readerSettings.ConformanceLevel = ConformanceLevel.Fragment;
string icuRules = string.Empty;
string variableTop = null;
int variableTopPositionIfNotUsed = 0;
using (XmlReader collationReader = XmlReader.Create(new StringReader(collationXml), readerSettings))
{
if (XmlHelpers.FindNextElementInSequence(collationReader, "settings", LdmlNodeComparer.CompareElementNames))
{
icuRules += GetIcuSettingsFromSettingsNode(collationReader, out variableTop);
variableTopPositionIfNotUsed = icuRules.Length;
}
if (XmlHelpers.FindNextElementInSequence(collationReader, "suppress_contractions",
LdmlNodeComparer.CompareElementNames))
{
icuRules += GetIcuOptionFromNode(collationReader);
}
if (XmlHelpers.FindNextElementInSequence(collationReader, "optimize", LdmlNodeComparer.CompareElementNames))
{
icuRules += GetIcuOptionFromNode(collationReader);
}
if (XmlHelpers.FindNextElementInSequence(collationReader, "rules", LdmlNodeComparer.CompareElementNames))
{
icuRules += GetIcuRulesFromRulesNode(collationReader, ref variableTop);
}
}
if (variableTop != null)
{
string variableTopRule = String.Format(NewLine + "&{0} < [variable top]", EscapeForIcu(variableTop));
if (variableTopPositionIfNotUsed == icuRules.Length)
{
icuRules += variableTopRule;
}
else
{
icuRules = String.Format("{0}{1}{2}", icuRules.Substring(0, variableTopPositionIfNotUsed),
variableTopRule, icuRules.Substring(variableTopPositionIfNotUsed));
}
}
return(TrimUnescapedWhitespace(icuRules));
}
public void FindNextElementInSequence_FindsElement()
{
var reader = XmlReader.Create(new StringReader("<ldml><alternate><attributes><character/><context/></attributes></alternate></ldml>"));
for (int i = 0; i <= 3; i++)
{
reader.Read(); // seek to inside <attributes> element
}
Assert.IsTrue(XmlHelpers.FindNextElementInSequence(reader, "character", LdmlNodeComparer.CompareElementNames),
"Failed to find <character> element");
Assert.AreEqual("character", reader.Name, "Failed to find <character> element");
Assert.IsTrue(XmlHelpers.FindNextElementInSequence(reader, "context", LdmlNodeComparer.CompareElementNames),
"Failed to find <context> element");
Assert.AreEqual("context", reader.Name, "Failed to find <context> element");
}
public void FindNextElementInSequence_FalseIfNotFound()
{
var reader = XmlReader.Create(new StringReader(
"<ldml><alternate><attributes><character/><context/></attributes><attributes><special/></attributes></alternate></ldml>"));
for (int i = 0; i <= 3; i++)
{
reader.Read(); // seek to inside first <attributes> element
}
Assert.IsFalse(XmlHelpers.FindNextElementInSequence(reader, "comment", LdmlNodeComparer.CompareElementNames),
"There is no <comment> element");
Assert.AreEqual("context", reader.Name, "Should have stopped searching after we passed the expected location. Has order changed?");
Assert.IsFalse(XmlHelpers.FindNextElementInSequence(reader, "special", LdmlNodeComparer.CompareElementNames),
"Should have stopped looking when when we hit the first </attributes> end tag");
Assert.AreEqual(XmlNodeType.EndElement, reader.NodeType, "Should have stopped looking when when we hit the first end tag");
Assert.AreEqual("attributes", reader.Name, "Should have stopped looking when when we hit the first </attributes> end tag");
}
private static bool FindElement(XmlReader reader, string name)
{
return(XmlHelpers.FindNextElementInSequence(reader, name, LdmlNodeComparer.CompareElementNames));
}
