///////////////////////////////////////////////////////////////////////
public static ReturnCode TryResolve(
OptionDictionary options,
string name,
bool strict,
bool noCase,
ref IOption option,
ref Result error
)
{
if (options != null)
{
if (name != null)
{
string exactName = null;
StringList list = new StringList();
foreach (KeyValuePair <string, IOption> pair in options)
{
string key = pair.Key;
IOption value = pair.Value;
bool match;
if (noCase || ((value != null) && value.IsNoCase(options)))
{
match = (String.Compare(key, 0, name, 0, name.Length,
StringOps.SystemNoCaseStringComparisonType) == 0);
}
else
{
match = (String.Compare(key, 0, name, 0, name.Length,
StringOps.SystemStringComparisonType) == 0);
}
if (match)
{
//
// NOTE: Was the key valid (this should always succeed).
//
if (key != null)
{
//
// NOTE: It was a match; however, was it an exact match?
//
if (key.Length == name.Length)
{
//
// NOTE: Preserve match, it may differ in case.
//
exactName = key;
}
//
// NOTE: Was it an exact match or did we match at least one
// character in a partial match?
//
if ((key.Length == name.Length) || (name.Length > 0))
{
//
// NOTE: Store the exact or partial match in the results
// dictionary.
//
list.Add(key);
}
}
}
}
//
// NOTE: If there was an exact match, just use it.
//
if (exactName != null)
{
//
// NOTE: Normal case, an exact option match was found.
//
option = options[exactName];
return(ReturnCode.Ok);
}
else if (list.Count == 1)
{
//
// NOTE: Normal case, exactly one option partially matched.
//
option = options[list[0]];
return(ReturnCode.Ok);
}
else if (list.Count > 1)
{
//
// NOTE: They specified an ambiguous option.
//
error = AmbiguousOption(options, name, list);
}
else if (strict)
{
//
// NOTE: They specified a non-existent option.
//
error = BadOption(options, name);
}
else
{
//
// NOTE: Non-strict mode, leave the original option value
// unchanged and let the caller deal with it.
//
return(ReturnCode.Ok);
}
}
else
{
error = "invalid option name";
}
}
else
{
error = "invalid options";
}
return(ReturnCode.Error);
}