/// <summary>
/// Gets the collation rules for the specified locale.
/// </summary>
/// <param name="locale">The locale.</param>
/// <param name="collatorRuleOption">UColRuleOption to use. Default is UColRuleOption.UCOL_TAILORING_ONLY</param>
public static string GetCollationRules(Locale locale, UColRuleOption collatorRuleOption = UColRuleOption.UCOL_TAILORING_ONLY)
{
ErrorCode err;
using (RuleBasedCollator.SafeRuleBasedCollatorHandle coll = NativeMethods.ucol_open(locale.Id, out err))
{
if (coll.IsInvalid || err.IsFailure())
{
return(null);
}
const int len = 1000;
IntPtr buffer = Marshal.AllocCoTaskMem(len * 2);
try
{
int actualLen = NativeMethods.ucol_getRulesEx(coll, collatorRuleOption, buffer, len);
if (actualLen > len)
{
Marshal.FreeCoTaskMem(buffer);
buffer = Marshal.AllocCoTaskMem(actualLen * 2);
NativeMethods.ucol_getRulesEx(coll, collatorRuleOption, buffer, actualLen);
}
return(Marshal.PtrToStringUni(buffer, actualLen));
}
finally
{
Marshal.FreeCoTaskMem(buffer);
}
}
}
public static int ucol_getRulesEx(
RuleBasedCollator.SafeRuleBasedCollatorHandle coll,
UColRuleOption delta,
IntPtr buffer, int bufferLen)
{
if (CollatorMethods.ucol_getRulesEx == null)
{
CollatorMethods.ucol_getRulesEx = GetMethod <CollatorMethodsContainer.ucol_getRulesExDelegate>(IcuI18NLibHandle, "ucol_getRulesEx");
}
return(CollatorMethods.ucol_getRulesEx(coll, delta, buffer, bufferLen));
}
/// <summary>
/// Gets the collation rules for the specified locale.
/// </summary>
/// <param name="locale">The locale.</param>
/// <param name="collatorRuleOption">UColRuleOption to use. Default is UColRuleOption.UCOL_TAILORING_ONLY</param>
public static string GetCollationRules(Locale locale, UColRuleOption collatorRuleOption = UColRuleOption.UCOL_TAILORING_ONLY)
{
using (var coll = NativeMethods.ucol_open(locale.Id, out var err))
{
if (coll.IsInvalid || err.IsFailure())
{
return(null);
}
return(NativeMethods.GetUnicodeString((ptr, length) =>
{
// ReSharper disable once AccessToDisposedClosure
length = NativeMethods.ucol_getRulesEx(coll, collatorRuleOption, ptr, length);
return new Tuple <ErrorCode, int>(ErrorCode.ZERO_ERROR, length);
}, 1000));
}
}
/// <summary>
/// Gets the collation rules for the specified locale.
/// </summary>
/// <param name="locale">The locale.</param>
/// <param name="collatorRuleOption">UColRuleOption to use. Default is UColRuleOption.UCOL_TAILORING_ONLY</param>
public static string GetCollationRules(string locale, UColRuleOption collatorRuleOption = UColRuleOption.UCOL_TAILORING_ONLY)
{
return(GetCollationRules(new Locale(locale), collatorRuleOption));
}