/// <summary>
/// Return an array of all charsets that appear to be plausible matches with
/// the input data. The array is ordered with the best quality match first.
/// <p/>
/// Raise an exception if
/// <ul>
/// <li>no charsets appear to match the input data.</li>
/// <li>no input text has been provided</li>
/// </ul>
/// </summary>
///
/// <returns>An array of CharsetMatch objects representing possibly matching
/// charsets.</returns>
/// @stable ICU 3.4
public CharsetMatch[] DetectAll()
{
CharsetRecognizer csr;
int i;
int detectResults;
int confidence;
ArrayList matches = new ArrayList();
// Iterate over all possible charsets, remember all that
// give a match quality > 0.
for (i = 0; i < fCSRecognizers.Count; i++)
{
csr = (CharsetRecognizer)fCSRecognizers[i];
detectResults = csr.Match(this);
confidence = detectResults & 0x000000ff;
if (confidence > 0)
{
CharsetMatch m = new CharsetMatch(this, csr, confidence);
ILOG.J2CsMapping.Collections.Generics.Collections.Add(matches, m);
}
}
ILOG.J2CsMapping.Collections.Collections.Sort(matches); // CharsetMatch compares on confidence
ILOG.J2CsMapping.Collections.Generics.Collections.Reverse(matches); // Put best match first.
CharsetMatch[] resultArray = new CharsetMatch[matches.Count];
resultArray = (CharsetMatch[])ILOG.J2CsMapping.Collections.Generics.Collections.ToArray(matches, resultArray);
return(resultArray);
}
/// <summary>
/// Compare to other CharsetMatch objects. Comparison is based on the match
/// confidence value, which allows CharsetDetector.detectAll() to order its
/// results.
/// </summary>
///
/// <param name="o">the CharsetMatch object to compare against.</param>
/// <returns>a negative integer, zero, or a positive integer as the confidence
/// level of this CharsetMatch is less than, equal to, or greater
/// than that of the argument.</returns>
/// <exception cref="ClassCastException">if the argument is not a CharsetMatch.</exception>
/// @stable ICU 3.4
public virtual int CompareTo(Object o)
{
CharsetMatch other = (CharsetMatch)o;
int compareResult = 0;
if (this.fConfidence > other.fConfidence)
{
compareResult = 1;
}
else if (this.fConfidence < other.fConfidence)
{
compareResult = -1;
}
return(compareResult);
}
/// <summary>
/// Autodetect the charset of an inputStream, and return a String containing
/// the converted input data.
/// <p/>
/// This is a convenience method that is equivalent to
/// <c>this.setDeclaredEncoding(declaredEncoding).setText(in).detect().getString();</c>
/// <p/>
/// Raise an exception if no charsets appear to match the input data.
/// </summary>
///
/// <param name="in">The source of the byte data in the unknown charset.</param>
/// <param name="declaredEncoding">A declared encoding for the data, if available, or null or anempty string if none is available.</param>
/// @stable ICU 3.4
public String GetString(byte[] ins0, String declaredEncoding)
{
fDeclaredEncoding = declaredEncoding;
try {
SetText(ins0);
CharsetMatch match = Detect();
if (match == null)
{
return(null);
}
return(match.GetString(-1));
} catch (IOException e) {
return(null);
}
}
/// <summary>
/// Autodetect the charset of an inputStream, and return a Java Reader to
/// access the converted input data.
/// <p/>
/// This is a convenience method that is equivalent to
/// <c>this.setDeclaredEncoding(declaredEncoding).setText(in).detect().getReader();</c>
/// <p/>
/// For the input stream that supplies the character data, markSupported()
/// must be true; the charset detection will read a small amount of data,
/// then return the stream to its original position via the
/// InputStream.reset() operation. The exact amount that will be read depends
/// on the characteristics of the data itself.
/// <p/>
/// Raise an exception if no charsets appear to match the input data.
/// </summary>
///
/// <param name="in">The source of the byte data in the unknown charset.</param>
/// <param name="declaredEncoding">A declared encoding for the data, if available, or null or anempty string if none is available.</param>
/// @stable ICU 3.4
public TextReader GetReader(Stream ins0, String declaredEncoding)
{
fDeclaredEncoding = declaredEncoding;
try {
SetText(ins0);
CharsetMatch match = Detect();
if (match == null)
{
return(null);
}
return(match.GetReader());
} catch (IOException e) {
return(null);
}
}
