/// <summary>
/// RuleBasedCollator constructor.
/// This takes the table rules and builds a collation table out of them.
/// </summary>
/// <param name="rules">the collation rules to build the collation table from</param>
/// <param name="normalizationMode">the normalization mode to use</param>
/// <param name="collationStrength">the collation strength to use</param>
public RuleBasedCollator(string rules,
NormalizationMode normalizationMode,
CollationStrength collationStrength)
{
ErrorCode status;
var parseError = new ParseError();
_collatorHandle = NativeMethods.ucol_openRules(rules,
rules.Length,
normalizationMode,
collationStrength,
ref parseError,
out status);
try
{
ExceptionFromErrorCode.ThrowIfError(status, parseError.ToString(rules));
}
catch
{
if (_collatorHandle != default(SafeRuleBasedCollatorHandle))
{
_collatorHandle.Dispose();
}
_collatorHandle = default(SafeRuleBasedCollatorHandle);
throw;
}
}
/// <summary>
/// RuleBasedCollator constructor.
/// This takes the table rules and builds a collation table out of them.
/// </summary>
/// <param name="rules">the collation rules to build the collation table from</param>
/// <param name="normalizationMode">the normalization mode to use</param>
/// <param name="collationStrength">the collation strength to use</param>
public RuleBasedCollator(string rules,
NormalizationMode normalizationMode,
CollationStrength collationStrength)
{
ErrorCode status;
collatorHandle = NativeMethods.ucol_openRules(rules,
rules.Length,
normalizationMode,
collationStrength,
ref parseError,
out status);
ExceptionFromErrorCode.ThrowIfError(status, parseError.ToString(rules));
}
/// <summary>
/// Implementing IDisposable pattern to properly release unmanaged resources.
/// </summary>
protected override void Dispose(bool disposing)
{
if (!_disposingValue)
{
if (disposing)
{
// Dispose managed state (managed objects), if any.
// although SafeRuleBasedCollatorHandle deals with an unmanaged resource
// it itself is a managed object, so we shouldn't try to dispose it
// if !disposing because that could lead to a corrupt stack (as observed
// in https://jenkins.lsdev.sil.org:45192/view/Icu/view/All/job/GitHub-IcuDotNet-Win-any-master-release/59)
if (_collatorHandle != default(SafeRuleBasedCollatorHandle))
{
_collatorHandle.Dispose();
}
}
_collatorHandle = default(SafeRuleBasedCollatorHandle);
_disposingValue = true;
}
}
