/// <summary>
/// Build a replacement map from the mapstr and the transstr for translation. The function returns a Map<Integer, Integer> mapping each codepoint
/// mentioned in the mapstr into the corresponding codepoint in transstr, or null if there is no matching mapping in transstr.
/// </summary>
/// <param name="mapstr"> The "mapping from" string </param>
/// <param name="transstr"> The "mapping into" string </param>
/// <returns> A map which maps input codepoint to output codepoint (or null) </returns>
private static IDictionary buildReplacementMap(string mapstr, string transstr)
{
// Build mapping (map from codepoint -> codepoint)
IDictionary replacements = new Hashtable(mapstr.Length * 4);
CodePointIterator mapIter = new StringCodePointIterator(mapstr);
CodePointIterator transIter = new StringCodePointIterator(transstr);
// Iterate through both mapIter and transIter and produce the mapping
int mapFrom = mapIter.current();
int mapTo = transIter.current();
while (mapFrom != org.eclipse.wst.xml.xpath2.processor.@internal.utils.CodePointIterator_Fields.DONE)
{
int?codepointFrom = new int?(mapFrom);
if (!replacements.Contains(codepointFrom))
{
// only overwrite if it doesn't exist already
int?replacement = mapTo != org.eclipse.wst.xml.xpath2.processor.@internal.utils.CodePointIterator_Fields.DONE ? new int?(mapTo) : null;
replacements[codepointFrom] = replacement;
}
mapFrom = mapIter.next();
mapTo = transIter.next();
}
return(replacements);
}
/// <summary>
/// Base-Uri operation.
/// </summary>
/// <param name="args">
/// Result from the expressions evaluation. </param>
/// <exception cref="DynamicError">
/// Dynamic error. </exception>
/// <returns> Result of fn:base-uri operation. </returns>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public static org.eclipse.wst.xml.xpath2.api.ResultSequence string_to_codepoints(java.util.Collection args) throws org.eclipse.wst.xml.xpath2.processor.DynamicError
public static ResultSequence string_to_codepoints(ICollection args)
{
ICollection cargs = Function.convert_arguments(args, expected_args());
var i = cargs.GetEnumerator();
i.MoveNext();
ResultSequence arg1 = (ResultSequence)i.Current;
if (arg1.empty())
{
return(ResultBuffer.EMPTY);
}
XSString xstr = (XSString)arg1.first();
CodePointIterator cpi = new StringCodePointIterator(xstr.value());
ResultBuffer rs = new ResultBuffer();
for (int codePoint = cpi.current(); codePoint != org.eclipse.wst.xml.xpath2.processor.@internal.utils.CodePointIterator_Fields.DONE; codePoint = cpi.next())
{
rs.add(new XSInteger(new System.Numerics.BigInteger(codePoint)));
}
return(rs.Sequence);
}
/// <summary>
/// Translate arguments.
/// </summary>
/// <param name="args">
/// are translated. </param>
/// <exception cref="DynamicError">
/// Dynamic error. </exception>
/// <returns> The result of translating the arguments. </returns>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public static org.eclipse.wst.xml.xpath2.api.ResultSequence translate(java.util.Collection args) throws org.eclipse.wst.xml.xpath2.processor.DynamicError
public static ResultSequence translate(ICollection args)
{
ICollection cargs = Function.convert_arguments(args, expected_args());
IEnumerator argi = cargs.GetEnumerator();
argi.MoveNext();
ResultSequence arg1 = (ResultSequence)argi.Current;
argi.MoveNext();
ResultSequence arg2 = (ResultSequence)argi.Current;
argi.MoveNext();
ResultSequence arg3 = (ResultSequence)argi.Current;
if (arg1.empty())
{
return(new XSString(""));
}
string str = ((XSString)arg1.first()).value();
string mapstr = ((XSString)arg2.first()).value();
string transstr = ((XSString)arg3.first()).value();
IDictionary replacements = buildReplacementMap(mapstr, transstr);
StringBuilder sb = new StringBuilder(str.Length);
CodePointIterator strIter = new StringCodePointIterator(str);
for (int input = strIter.current(); input != org.eclipse.wst.xml.xpath2.processor.@internal.utils.CodePointIterator_Fields.DONE; input = strIter.next())
{
int?inputCodepoint = new int?(input);
if (replacements.Contains(inputCodepoint))
{
int?replaceWith = (int?)replacements[inputCodepoint];
if (replaceWith != null)
{
var c = (char)replaceWith.Value;
sb.Append(c);
}
}
else
{
var c = (char)input;
sb.Append(c);
}
}
return(new XSString(sb.ToString()));
}
/// <summary>
/// Obtain a substring from the arguments.
/// </summary>
/// <param name="args">
/// are used to obtain a substring. </param>
/// <exception cref="DynamicError">
/// Dynamic error. </exception>
/// <returns> The result of obtaining a substring from the arguments. </returns>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public static org.eclipse.wst.xml.xpath2.api.ResultSequence substring(java.util.Collection args) throws org.eclipse.wst.xml.xpath2.processor.DynamicError
public static ResultSequence substring(ICollection args)
{
ICollection cargs = Function.convert_arguments(args, expected_args(args));
IEnumerator argi = cargs.GetEnumerator();
argi.MoveNext();
ResultSequence stringArg = (ResultSequence)argi.Current;
argi.MoveNext();
ResultSequence startPosArg = (ResultSequence)argi.Current;
ResultSequence lengthArg = null;
if (argi.MoveNext())
{
lengthArg = (ResultSequence)argi.Current;
}
if (stringArg.empty())
{
return(emptyString());
}
string str = ((XSString)stringArg.first()).value();
double dstart = ((XSDouble)startPosArg.first()).double_value();
// is start is NaN, no chars are returned
if (double.IsNaN(dstart) || double.NegativeInfinity == dstart)
{
return(emptyString());
}
double x = Math.Round(dstart);
long istart = (long)x;
long ilength = long.MaxValue;
if (lengthArg != null)
{
double dlength = ((XSDouble)lengthArg.first()).double_value();
if (double.IsNaN(dlength))
{
return(emptyString());
}
// Switch to the rounded kind
double y = Math.Round(dlength);
ilength = (long)y;
if (ilength <= 0)
{
return(emptyString());
}
}
// could guess too short in cases supplementary chars
StringBuilder sb = new StringBuilder((int)Math.Min(str.Length, ilength));
// This looks like an inefficient way to iterate, but due to surrogate handling,
// string indexes are no good here. Welcome to UTF-16!
CodePointIterator strIter = new StringCodePointIterator(str);
for (long p = 1;
strIter.current() != org.eclipse.wst.xml.xpath2.processor.@internal.utils.CodePointIterator_Fields.DONE;
++p, strIter.next())
{
if (istart <= p && p - istart < ilength)
{
sb.Append((char)strIter.current());
}
}
return(new XSString(sb.ToString()));
}
