private int GetShapeableSymbolsWidth(TextShapeableSymbols textRun)
{
int result = 0;
int text_length = textRun.Length;
int[] advance_widths = new int[text_length];
GCHandle pin_handle;
CharacterBuffer char_buf = textRun.CharacterBufferReference.CharacterBuffer;
unsafe
{
IntPtr run_characters = char_buf.PinAndGetCharacterPointer(textRun.CharacterBufferReference.OffsetToFirstChar, out pin_handle);
try
{
fixed(int *widths_ptr = advance_widths)
{
textRun.GetAdvanceWidthsUnshaped((char *)run_characters.ToPointer(), text_length, TextFormatterImp.ToIdeal, widths_ptr);
}
}
finally
{
char_buf.UnpinCharacterPointer(pin_handle);
}
}
for (int i = 0; i < text_length; i++)
{
result += advance_widths[i];
}
return(result);
}
public GrahpicsBuffer(int width, int height)
{
Width = width;
Height = height;
ZBuffer = new float?[width, height];
CharacterBuffer = new CharacterBuffer(width, height);
ColorBuffer = new ColorBuffer(width, height);
}
public GrahpicsBuffer(int width, int height)
{
Width = width;
Height = height;
ZBuffer = new float?[width, height];
CharacterBuffer = new CharacterBuffer(width, height);
ColorBuffer = new ColorBuffer(width, height);
}
public void TestBuildString()
{
var buffer = new CharacterBuffer();
var s = "Some test string";
for (int i = 0; i < s.Length; i++)
buffer.Append(s[i]);
Assert.AreEqual(buffer.DisposeAndGetContents(), s);
}
/// <summary>
/// Construct character buffer from memory buffer
/// </summary>
internal CharacterBufferRange(
CharacterBuffer charBuffer,
int offsetToFirstChar,
int characterLength
) :
this(
new CharacterBufferReference(charBuffer, offsetToFirstChar),
characterLength
)
{
}
public void TestClear()
{
var buffer = new CharacterBuffer();
buffer.Append('a');
buffer.Append('b');
buffer.Clear();
buffer.Append('c');
Assert.AreEqual(buffer.DisposeAndGetContents(), "c");
}
public void TestRemoveLastCharacter()
{
var buffer = new CharacterBuffer();
int size = buffer.Capacity;
for (int i = 0; i < size; i++)
buffer.Append('a');
for (int i = 0; i < size; i++)
buffer.Remove(buffer.Length - 1, 1);
buffer.Dispose();
}
public override bool Fill(CharacterBuffer buffer, TextReader reader, int numChars)
{
Debug.Assert(buffer.Buffer.Length >= 1);
if (numChars < 1 || numChars > buffer.Buffer.Length)
{
throw new ArgumentException("numChars must be >= 1 and <= the buffer size");
}
buffer.offset = 0;
int read = ReadFully(reader, buffer.Buffer, 0, numChars);
buffer.length = read;
buffer.lastTrailingHighSurrogate = (char)0;
return(read == numChars);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: @Override public boolean fill(final CharacterBuffer buffer, final java.io.Reader reader, int numChars) throws java.io.IOException
//JAVA TO C# CONVERTER WARNING: 'final' parameters are not available in .NET:
public override bool fill(CharacterBuffer buffer, Reader reader, int numChars)
{
Debug.Assert(buffer.buffer.Length >= 2);
if (numChars < 2 || numChars > buffer.buffer.Length)
{
throw new System.ArgumentException("numChars must be >= 2 and <= the buffer size");
}
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final char[] charBuffer = buffer.buffer;
char[] charBuffer = buffer.buffer;
buffer.offset = 0;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int offset;
int offset;
// Install the previously saved ending high surrogate:
if (buffer.lastTrailingHighSurrogate != 0)
{
charBuffer[0] = buffer.lastTrailingHighSurrogate;
buffer.lastTrailingHighSurrogate = (char)0;
offset = 1;
}
else
{
offset = 0;
}
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int read = readFully(reader, charBuffer, offset, numChars - offset);
int read = readFully(reader, charBuffer, offset, numChars - offset);
buffer.length = offset + read;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final boolean result = buffer.length == numChars;
bool result = buffer.length == numChars;
if (buffer.length < numChars)
{
// We failed to fill the buffer. Even if the last char is a high
// surrogate, there is nothing we can do
return(result);
}
if (char.IsHighSurrogate(charBuffer[buffer.length - 1]))
{
buffer.lastTrailingHighSurrogate = charBuffer[--buffer.length];
}
return(result);
}
public Character Map(CharacterBuffer buff)
{
var character = new Character()
{
Name = buffer.Name,
Bio = buffer.Bio,
CampaignID = buffer.CampaignID,
UserId = UserRepo.GetUserByUsername(buffer.Username).UserID,
RaceID = buffer.RaceID,
ClassID = buffer.ClassID,
Experience = 0,
Level = 1
};
return(character);
}
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: @Override public boolean fill(CharacterBuffer buffer, java.io.Reader reader, int numChars) throws java.io.IOException
public override bool fill(CharacterBuffer buffer, Reader reader, int numChars)
{
Debug.Assert(buffer.buffer.Length >= 1);
if (numChars < 1 || numChars > buffer.buffer.Length)
{
throw new System.ArgumentException("numChars must be >= 1 and <= the buffer size");
}
buffer.offset = 0;
//JAVA TO C# CONVERTER WARNING: The original Java variable was marked 'final':
//ORIGINAL LINE: final int read = readFully(reader, buffer.buffer, 0, numChars);
int read = readFully(reader, buffer.buffer, 0, numChars);
buffer.length = read;
buffer.lastTrailingHighSurrogate = (char)0;
return(read == numChars);
}
public override bool Fill(CharacterBuffer buffer, TextReader reader, int numChars)
{
if (Debugging.AssertsEnabled)
{
Debugging.Assert(buffer.Buffer.Length >= 2);
}
if (numChars < 2 || numChars > buffer.Buffer.Length)
{
// LUCENENET: Changed from InvalidArgumentException to ArgumentOutOfRangeException
throw new ArgumentOutOfRangeException(nameof(numChars), "numChars must be >= 2 and <= the buffer size");
}
char[] charBuffer = buffer.Buffer;
buffer.offset = 0;
int offset;
// Install the previously saved ending high surrogate:
if (buffer.lastTrailingHighSurrogate != 0)
{
charBuffer[0] = buffer.lastTrailingHighSurrogate;
buffer.lastTrailingHighSurrogate = (char)0;
offset = 1;
}
else
{
offset = 0;
}
int read = ReadFully(reader, charBuffer, offset, numChars - offset);
buffer.length = offset + read;
bool result = buffer.length == numChars;
if (buffer.length < numChars)
{
// We failed to fill the buffer. Even if the last char is a high
// surrogate, there is nothing we can do
return(result);
}
if (char.IsHighSurrogate(charBuffer[buffer.length - 1]))
{
buffer.lastTrailingHighSurrogate = charBuffer[--buffer.length];
}
return(result);
}
public override bool Fill(CharacterBuffer buffer, TextReader reader, int numChars)
{
if (Debugging.AssertsEnabled)
{
Debugging.Assert(buffer.Buffer.Length >= 1);
}
if (numChars < 1 || numChars > buffer.Buffer.Length)
{
// LUCENENET: Changed from InvalidArgumentException to ArgumentOutOfRangeException
throw new ArgumentOutOfRangeException(nameof(numChars), "numChars must be >= 1 and <= the buffer size");
}
buffer.offset = 0;
int read = ReadFully(reader, buffer.Buffer, 0, numChars);
buffer.length = read;
buffer.lastTrailingHighSurrogate = (char)0;
return(read == numChars);
}
public Comment(CharacterBuffer buffer)
{
//this.Image = ImageType.Comment;
this.Start = buffer.IndexInOriginalBuffer;
do
{
if (buffer.IsAtEnd)
{
break;
}
buffer.MoveNext();
}
while (buffer.CurrentCharacter != '\n');
this.End = buffer.IndexInOriginalBuffer;
this.Literal = buffer.Substring(this.Start - buffer.Offset, this.End - this.Start);
this.contents = this.Literal.Remove(0, 1).Trim();
this.Description = string.Concat("Comment: ", this.contents);
buffer.MoveNext();
}
private string _Collect(CharacterClass expect, char ch)
{
CharacterBuffer buf = new CharacterBuffer(ch);
while (true)
{
int cur = _reader.Peek();
if (cur == -1)
{
break;
}
ch = (char)cur;
CharacterClass cc = _settings.Classifier [ch];
if ((cc & expect) == 0)
{
break;
}
buf.Write((char)_reader.Read());
}
return(buf.ToString());
}
public Character(CharacterBuffer buffer, bool repetitionsOnly)
{
//this.Image = ImageType.Character;
Start = buffer.IndexInOriginalBuffer;
if (buffer.IsAtEnd)
{
Utility.ParseError("Reached end of buffer in Character constructor!", buffer);
IsValid = false;
}
else if (repetitionsOnly)
{
_character = buffer.CurrentCharacter.ToString();
ParseRepetitions(buffer);
return;
}
_character = buffer.CurrentCharacter.ToString();
Literal = _character;
Description = Literal;
buffer.MoveNext();
ParseRepetitions(buffer);
}
/// <summary>
/// Construct character buffer reference from memory buffer
/// </summary>
internal CharacterBufferReference(
CharacterBuffer charBuffer,
int offsetToFirstChar
)
{
if (offsetToFirstChar < 0)
{
throw new ArgumentOutOfRangeException("offsetToFirstChar", SR.Get(SRID.ParameterCannotBeNegative));
}
// maximum offset is one less than CharacterBuffer.Count, except that zero is always a valid offset
// even in the case of an empty or null character buffer
int maxOffset = (charBuffer == null) ? 0 : Math.Max(0, charBuffer.Count - 1);
if (offsetToFirstChar > maxOffset)
{
throw new ArgumentOutOfRangeException("offsetToFirstChar", SR.Get(SRID.ParameterCannotBeGreaterThan, maxOffset));
}
_charBuffer = charBuffer;
_offsetToFirstChar = offsetToFirstChar;
}
private string _CollectUntil(char[] stop, char[] disallowed)
{
CharacterBuffer buf = new CharacterBuffer();
while (true)
{
int cur = _reader.Read();
if (cur == -1)
{
throw new IOException();
}
char ch = (char)cur;
if (Array.IndexOf(stop, ch) >= 0)
{
break;
}
if (Array.IndexOf(disallowed, ch) >= 0)
{
throw new ApplicationException();
}
buf.Write(ch);
}
return(buf.ToString());
}
private bool ReadDecodedCharactersUntilSentinel(CharacterBuffer buffer, char sentinel)
{
bool result = false;
int startOffset = _DecodedCharacterOffset;
while (_DecodedCharacterOffset < _DecodedCharacterCount)
{
if (_DecodedBuffer[_DecodedCharacterOffset++] == sentinel)
{
result = true;
break;
}
}
int charCount = _DecodedCharacterOffset - startOffset;
if (result)
{
charCount -= 1;
}
buffer.Append(_DecodedBuffer, startOffset, charCount);
return(result);
}
/// <summary>
/// Convenience method which calls <c>Fill(buffer, reader, buffer.Buffer.Length)</c>. </summary>
public virtual bool Fill(CharacterBuffer buffer, TextReader reader)
{
return(Fill(buffer, reader, buffer.Buffer.Length));
}
/// <summary>
/// Fills the <seealso cref="CharacterBuffer"/> with characters read from the given
/// reader <seealso cref="Reader"/>. This method tries to read <code>numChars</code>
/// characters into the <seealso cref="CharacterBuffer"/>, each call to fill will start
/// filling the buffer from offset <code>0</code> up to <code>numChars</code>.
/// In case code points can span across 2 java characters, this method may
/// only fill <code>numChars - 1</code> characters in order not to split in
/// the middle of a surrogate pair, even if there are remaining characters in
/// the <seealso cref="Reader"/>.
/// <para>
/// Depending on the <seealso cref="Version"/> passed to
/// <seealso cref="CharacterUtils#getInstance(Version)"/> this method implements
/// supplementary character awareness when filling the given buffer. For all
/// <seealso cref="Version"/> > 3.0 <seealso cref="#fill(CharacterBuffer, Reader, int)"/> guarantees
/// that the given <seealso cref="CharacterBuffer"/> will never contain a high surrogate
/// character as the last element in the buffer unless it is the last available
/// character in the reader. In other words, high and low surrogate pairs will
/// always be preserved across buffer boarders.
/// </para>
/// <para>
/// A return value of <code>false</code> means that this method call exhausted
/// the reader, but there may be some bytes which have been read, which can be
/// verified by checking whether <code>buffer.getLength() > 0</code>.
/// </para>
/// </summary>
/// <param name="buffer">
/// the buffer to fill. </param>
/// <param name="reader">
/// the reader to read characters from. </param>
/// <param name="numChars">
/// the number of chars to read </param>
/// <returns> <code>false</code> if and only if reader.read returned -1 while trying to fill the buffer </returns>
/// <exception cref="IOException">
/// if the reader throws an <seealso cref="IOException"/>. </exception>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public abstract boolean fill(CharacterBuffer buffer, java.io.Reader reader, int numChars) throws java.io.IOException;
public abstract bool fill(CharacterBuffer buffer, Reader reader, int numChars);
public FormattedTextSymbols(
GlyphingCache glyphingCache,
TextRun textSymbols,
bool rightToLeft,
double scalingFactor,
float pixelsPerDip,
TextFormattingMode textFormattingMode,
bool isSideways
)
{
_textFormattingMode = textFormattingMode;
_isSideways = isSideways;
ITextSymbols symbols = textSymbols as ITextSymbols;
Debug.Assert(symbols != null);
// break down a single text run into pieces
IList <TextShapeableSymbols> shapeables = symbols.GetTextShapeableSymbols(
glyphingCache,
textSymbols.CharacterBufferReference,
textSymbols.Length,
rightToLeft, // This is a bool indicating the RTL
// based on the bidi level of text (if applicable).
// For FormattedTextSymbols it is equal to paragraph flow direction.
rightToLeft, // This is the flow direction of the paragraph as
// specified by the user. DWrite needs the paragraph
// flow direction of the paragraph
// while WPF algorithms need the RTL of the text based on
// Bidi if possible.
null, // cultureInfo
null, // textModifierScope
_textFormattingMode,
_isSideways
);
Debug.Assert(shapeables != null && shapeables.Count > 0);
_rightToLeft = rightToLeft;
_glyphs = new Glyphs[shapeables.Count];
CharacterBuffer charBuffer = textSymbols.CharacterBufferReference.CharacterBuffer;
int offsetToFirstChar = textSymbols.CharacterBufferReference.OffsetToFirstChar;
int i = 0;
int ich = 0;
while (i < shapeables.Count)
{
TextShapeableSymbols current = shapeables[i] as TextShapeableSymbols;
Debug.Assert(current != null);
int cch = current.Length;
int j;
// make a separate character buffer for glyphrun persistence
char[] charArray = new char[cch];
for (j = 0; j < cch; j++)
{
charArray[j] = charBuffer[offsetToFirstChar + ich + j];
}
if (current.IsShapingRequired)
{
ushort[] clusterMap;
ushort[] glyphIndices;
int[] glyphAdvances;
GlyphOffset[] glyphOffsets;
//
unsafe
{
fixed(char *fixedCharArray = &charArray[0])
{
MS.Internal.Text.TextInterface.TextAnalyzer textAnalyzer = MS.Internal.FontCache.DWriteFactory.Instance.CreateTextAnalyzer();
GlyphTypeface glyphTypeface = current.GlyphTypeFace;
DWriteFontFeature[][] fontFeatures;
uint[] fontFeatureRanges;
uint unsignedCch = checked ((uint)cch);
LSRun.CompileFeatureSet(current.Properties.TypographyProperties, unsignedCch, out fontFeatures, out fontFeatureRanges);
textAnalyzer.GetGlyphsAndTheirPlacements(
(ushort *)fixedCharArray,
unsignedCch,
glyphTypeface.FontDWrite,
glyphTypeface.BlankGlyphIndex,
false, // no sideway support yet
/************************************************************************************************/
//
rightToLeft,
current.Properties.CultureInfo,
/************************************************************************************************/
fontFeatures,
fontFeatureRanges,
current.Properties.FontRenderingEmSize,
scalingFactor,
pixelsPerDip,
_textFormattingMode,
current.ItemProps,
out clusterMap,
out glyphIndices,
out glyphAdvances,
out glyphOffsets
);
}
_glyphs[i] = new Glyphs(
current,
charArray,
glyphAdvances,
clusterMap,
glyphIndices,
glyphOffsets,
scalingFactor
);
}
}
else
{
// shaping not required,
// bypass glyphing process altogether
int[] nominalAdvances = new int[charArray.Length];
unsafe
{
fixed(char *fixedCharArray = &charArray[0])
fixed(int *fixedNominalAdvances = &nominalAdvances[0])
{
current.GetAdvanceWidthsUnshaped(
fixedCharArray,
cch,
scalingFactor, // format resolution specified per em,
fixedNominalAdvances
);
}
}
_glyphs[i] = new Glyphs(
current,
charArray,
nominalAdvances,
scalingFactor
);
}
i++;
ich += cch;
}
}
public ReadToEndThunk()
{
Buffer = new CharacterBuffer();
OnDecodeComplete = _OnDecodeComplete;
}
static internal int GetChar(
CharacterBuffer charBuffer,
int ichText,
int cchText,
int charNumber,
out int wordCount)
{
if (charNumber < cchText-1 &&
((charBuffer[ichText + charNumber] & 0xFC00) == 0xD800) &&
((charBuffer[ichText + charNumber+1] & 0xFC00) == 0xDC00))
{
wordCount = 2;
return ((((charBuffer[ichText + charNumber] & 0x03ff) << 10) | (charBuffer[ichText + charNumber+1] & 0x3ff)) + 0x10000);
}
wordCount = 1;
return ((int) charBuffer[ichText + charNumber]);
}
static internal bool BidiAnalyzeInternal(
CharacterBuffer charBuffer, // character buffer
int ichText, // offset to first char in the buffer
int cchText, // number of input char
int cchTextMaxHint, // hint maximum number of char processed
Flags flags, // control flags
State state, // bidi state in, out or both
IList<byte> levels, // [IN/OUT] resolved level per char
IList<DirectionClass> characterClass, // [IN/OUT] direction class of each char
out int cchResolved // number of char resolved
)
{
DirectionClass tempClass;
int [] runLimits;
State stateIn = null, stateOut = null; // both can point into state parameter
ulong overrideStatus;
OverrideClass overrideClass;
ushort stackOverflow;
byte baseLevel;
byte lastRunLevel;
byte lastNonBnLevel;
int counter;
int codePoint;
int lengthUnresolved = 0;
int controlStack = 0;
int runCount = 0;
int wordCount;
Invariant.Assert(levels != null && levels.Count >= cchText);
Invariant.Assert(characterClass != null && characterClass.Count >= cchText);
cchResolved = 0;
// Verifying input parameters.
if(charBuffer == null || (cchText <= 0) || (charBuffer.Count < cchText) ||
((((flags & Flags.ContinueAnalysis)!=0) || ((flags & Flags.IncompleteText)!=0)) && (state == null)))
{
return false;
}
// try to be smart to get the maximum we need to process.
if ((flags & Flags.MaximumHint) != 0 && cchTextMaxHint>0 && cchTextMaxHint < cchText)
{
if (cchTextMaxHint>1 && (charBuffer[ichText + cchTextMaxHint-2] & 0xFC00) == 0xD800)
{
// it might be surrogate pair
cchTextMaxHint--;
}
int index = cchTextMaxHint-1;
int intChar = charBuffer[ichText + index];
wordCount = 1;
if ((intChar & 0xFC00) == 0xD800)
{
intChar = DoubleWideChar.GetChar(charBuffer, ichText, cchText, index, out wordCount);
}
tempClass = Classification.CharAttributeOf((int) Classification.GetUnicodeClass(intChar)).BiDi;
index += wordCount;
if (CharProperty[1, (int) tempClass]==1)
{
// if we got more than 20 same strong charcaters class, we give up. we might
// get this case with Thai script.
while (index<cchText && index-cchTextMaxHint<20)
{
intChar = charBuffer[ichText + index];
wordCount = 1;
if ((intChar & 0xFC00) == 0xD800)
{
intChar = DoubleWideChar.GetChar(charBuffer, ichText, cchText, index, out wordCount);
}
if (tempClass != Classification.CharAttributeOf((int) Classification.GetUnicodeClass(intChar)).BiDi)
{
break;
}
else
{
index += wordCount;
}
}
}
else
{
// we got neutral try to get first strong character.
while (index<cchText)
{
intChar = charBuffer[ichText + index];
wordCount = 1;
if ((intChar & 0xFC00) == 0xD800)
{
intChar = DoubleWideChar.GetChar(charBuffer, ichText, cchText, index, out wordCount);
}
if (CharProperty[1,
(int) Classification.CharAttributeOf((int) Classification.GetUnicodeClass(intChar)).BiDi] == 1)
break;
index += wordCount;
}
index++; // include the first strong character to be able to resolve the neutrals
}
cchText = Math.Min(cchText, index);
}
// If the last character in the string is a paragraph terminator,
// we can analyze the whole string, No need to use state parameter
// for output
BidiStack levelsStack = new BidiStack();
if ((flags & Flags.IncompleteText) != 0)
{
codePoint = charBuffer[ichText + cchText -1];
if((cchText > 1) && ((charBuffer[ichText + cchText -2] & 0xFC00 ) == 0xD800) && ((charBuffer[ichText + cchText - 1] & 0xFC00) == 0xDC00))
{
codePoint = 0x10000 + (((charBuffer[ichText + cchText -2] & 0x3ff) << 10) | (charBuffer[ichText + cchText - 1] & 0x3ff));
}
if (DirectionClass.ParagraphSeparator != Classification.CharAttributeOf((int) Classification.GetUnicodeClass(codePoint)).BiDi)
{
stateOut = state;
}
}
if ((flags & Flags.ContinueAnalysis) != 0)
{
// try to see if we have enough information to start the analysis or we need to get more.
codePoint = charBuffer[ichText + 0];
if((cchText > 1) && ((charBuffer[ichText + 0] & 0xFC00 ) == 0xD800) && ((charBuffer[ichText + 1] & 0xFC00) == 0xDC00))
{
codePoint = 0x10000 + (((charBuffer[ichText + 0] & 0x3ff) << 10) | (charBuffer[ichText + 1] & 0x3ff));
}
tempClass = Classification.CharAttributeOf((int) Classification.GetUnicodeClass(codePoint)).BiDi;
// state can be used as in/out parameter
stateIn = state;
// Note: use the state instant to call LastStrongClass or LastStrongOrNumberClass
// which should be overrided by the caller.
switch (tempClass)
{
case DirectionClass.Left:
case DirectionClass.Right:
case DirectionClass.ArabicNumber:
case DirectionClass.ArabicLetter:
stateIn.LastNumberClass = tempClass;
stateIn.LastStrongClass = tempClass;
break;
case DirectionClass.EuropeanNumber:
stateIn.LastNumberClass = tempClass;
break;
}
}
// Done with the state
if (stateIn != null)
{
if (!levelsStack.Init(stateIn.LevelStack))
{
cchResolved = 0;
return false;
}
baseLevel = levelsStack.GetCurrentLevel();
stackOverflow = stateIn.Overflow;
overrideStatus = stateIn.OverrideLevels;
overrideClass = (Helper.IsBitSet(overrideStatus, baseLevel)) ?
(Helper.IsOdd(baseLevel) ?
OverrideClass.OverrideClassRight :
OverrideClass.OverrideClassLeft):
OverrideClass.OverrideClassNeutral;
}
else
{
baseLevel = BaseLevelLeft;
if ((flags & Flags.FirstStrongAsBaseDirection) != 0)
{
// Find strong character in the first paragraph
// This might cause a complete pass over the input string
// but we must get it before we start.
DirectionClass firstStrong = DirectionClass.ClassInvalid;
if (GetFirstStrongCharacter(charBuffer, ichText, cchText, ref firstStrong))
{
if (firstStrong != DirectionClass.Left)
{
baseLevel = BaseLevelRight;
}
}
}
else if ((flags & Flags.DirectionRightToLeft) != 0)
{
baseLevel = BaseLevelRight;
}
levelsStack.Init((ulong) baseLevel + 1);
stackOverflow = 0;
// Initialize to neutral
overrideStatus = 0;
overrideClass = OverrideClass.OverrideClassNeutral;
}
byte paragraphEmbeddingLevel = levelsStack.GetStackBottom();
//
// try to optimize through a fast path.
//
int neutralIndex = -1;
byte bidiLevel, nonBidiLevel;
byte lastPathClass;
byte basePathClass;
byte neutralLevel;
DirectionClass lastStrongClass;
if (Helper.IsOdd(baseLevel))
{
bidiLevel = baseLevel;
nonBidiLevel = (byte) (baseLevel + 1);
lastPathClass = basePathClass = 3;
if (stateIn != null )
lastStrongClass = stateIn.LastStrongClass;
else
lastStrongClass = DirectionClass.Right;
}
else
{
nonBidiLevel = baseLevel;
bidiLevel = (byte) (baseLevel + 1);
lastPathClass = basePathClass = 2;
if (stateIn != null )
lastStrongClass = stateIn.LastStrongClass;
else
lastStrongClass = DirectionClass.Left;
}
if (stateIn != null )
{
if ((FastPathClass[(int) lastStrongClass] & 0x02) == 0x02) // Strong Left or Right
{
lastPathClass = FastPathClass[(int) lastStrongClass];
}
}
//
// Hidden text do not affect the relative order of surrounding text. We do that by
// assigning them to the class type of either the preceding or following non-hidden text
// so that they won't cause additional transitions of Bidi levels.
//
DirectionClass hiddenCharClass = DirectionClass.GenericNeutral;
counter = 0;
wordCount = 1;
// In case the input starts with hidden characters, we will assign them to the class of the following
// non-hidden cp. The for-loop scans forward till the 1st non-hidden cp and remembers its bidi class
// to be used in case there are hidden cp at the beginning of the input.
for (int i = counter; i < cchText; i += wordCount)
{
int intChar = charBuffer[ichText + i];
if ((intChar & 0xFC00) == 0xD800)
{
intChar = DoubleWideChar.GetChar(charBuffer, ichText, cchText, counter, out wordCount);
}
if (intChar != CharHidden)
{
hiddenCharClass = Classification.CharAttributeOf((int)Classification.GetUnicodeClass(intChar)).BiDi;
if ( hiddenCharClass == DirectionClass.EuropeanNumber
&& (flags & Flags.OverrideEuropeanNumberResolution) != 0)
{
hiddenCharClass = characterClass[i]; // In case EN resolution is overridden.
}
break;
}
}
while (counter < cchText)
{
// Account for surrogate characters
wordCount = 1;
codePoint = DoubleWideChar.GetChar(charBuffer, ichText, cchText, counter, out wordCount);
tempClass = Classification.CharAttributeOf((int) Classification.GetUnicodeClass(codePoint)).BiDi;
if (codePoint == CharHidden)
{
tempClass = hiddenCharClass;
}
if (FastPathClass[(int) tempClass] == 0)
break;
// The directional class can be processed in fast path. It will not be EN or AN and hence not
// overridable.
characterClass[counter] = tempClass;
hiddenCharClass = tempClass;
if (FastPathClass[(int) tempClass] == 1) // Neutral
{
if (tempClass != DirectionClass.EuropeanSeparator && tempClass != DirectionClass.CommonSeparator)
characterClass[counter] = DirectionClass.GenericNeutral;
if (neutralIndex == -1)
neutralIndex = counter;
}
else // strong class (2, 3, or 4)
{
if (neutralIndex != -1) // resolve the neutral
{
if (lastPathClass != FastPathClass[(int) tempClass])
{
neutralLevel = baseLevel;
}
else
{
neutralLevel = lastPathClass == 2 ? nonBidiLevel : bidiLevel;
}
while (neutralIndex < counter)
{
levels[neutralIndex] = neutralLevel;
neutralIndex++;
}
neutralIndex = -1;
}
lastPathClass = FastPathClass[(int) tempClass];
levels[counter] = lastPathClass == 2 ? nonBidiLevel : bidiLevel;
if (wordCount == 2)
{
// Higher and Lower surrogate should have the same bidi level.
levels[counter + 1] = levels[counter];
}
lastStrongClass = tempClass;
}
counter = counter + wordCount;
}
if (counter < cchText) // couldn't optimize.
{
// reset the levels
for (int j=0; j<counter; j++)
levels[j] = baseLevel;
}
else
{
cchResolved = cchText;
if (state != null)
{
state.LastStrongClass = lastStrongClass;
}
if (neutralIndex != -1) // resolve the neutral
{
if ((flags & Flags.IncompleteText) == 0)
{
if (lastPathClass != basePathClass)
{
neutralLevel = baseLevel;
}
else
{
neutralLevel = lastPathClass == 2 ? nonBidiLevel : bidiLevel;
}
while (neutralIndex < cchText)
{
levels[neutralIndex] = neutralLevel;
neutralIndex++;
}
}
else
{
cchResolved = neutralIndex;
}
}
return true;
}
//
// end fast path
//
// Get character classifications.
// Resolve explicit embedding levels.
// Record run limits (either due to a level change or due to new paragraph)
lastNonBnLevel = baseLevel;
// for the worst case of all paragraph terminators string.
runLimits = new int[cchText];
// counter is already initialized in the fast path
while (counter < cchText)
{
int intChar = charBuffer[ichText + counter];
wordCount = 1;
if ((intChar & 0xFC00) == 0xD800)
{
intChar = DoubleWideChar.GetChar(charBuffer, ichText, cchText, counter, out wordCount);
}
DirectionClass currentClass;
currentClass = Classification.CharAttributeOf((int) Classification.GetUnicodeClass(intChar)).BiDi;
levels[counter] = levelsStack.GetCurrentLevel();
if (intChar == CharHidden)
{
currentClass = hiddenCharClass;
}
switch(currentClass)
{
case DirectionClass.ParagraphSeparator:
// mark output level array with a special mark
// to seperate between paragraphs
levels[counter] = ParagraphTerminatorLevel;
runLimits[runCount] = counter;
if (counter != cchText-1)
{
runCount++;
}
levelsStack.Init((ulong) baseLevel + 1);
overrideStatus = 0;
overrideClass = OverrideClass.OverrideClassNeutral;
stackOverflow = 0;
controlStack = 0;
goto case DirectionClass.OtherNeutral;
// Fall through
// We keep our Unicode classification table stictly following Unicode
// regarding neutral types (B, S, WS, ON), change all to generic N.
case DirectionClass.SegmentSeparator:
case DirectionClass.WhiteSpace:
case DirectionClass.OtherNeutral:
characterClass[counter] = DirectionClass.GenericNeutral;
if (counter>0 && characterClass[counter-1] == DirectionClass.BoundaryNeutral)
{
if (levels[counter-1] < levels[counter] && levels[counter] != ParagraphTerminatorLevel)
{
levels[counter-1] = levels[counter];
}
}
controlStack = 0;
break;
case DirectionClass.LeftToRightEmbedding:
case DirectionClass.RightToLeftEmbedding:
characterClass[counter] = DirectionClass.BoundaryNeutral;
if ((flags & Flags.IgnoreDirectionalControls) != 0)
break; // Ignore directional controls. They won't affect bidi state
// If we overflowed the stack, keep track of this in order to know when you hit
// a PDF if you should pop or not.
if(!levelsStack.Push(currentClass == DirectionClass.LeftToRightEmbedding ? true : false))
{
stackOverflow++;
}
else
{
runLimits[runCount] = counter;
if (counter != cchText-1)
{
runCount++;
}
controlStack++;
}
overrideClass = OverrideClass.OverrideClassNeutral;
levels[counter] = lastNonBnLevel;
break;
case DirectionClass.LeftToRightOverride:
case DirectionClass.RightToLeftOverride:
characterClass[counter] = DirectionClass.BoundaryNeutral;
if ((flags & Flags.IgnoreDirectionalControls) != 0)
break; // Ignore directional controls. They won't affect bidi state
if(!levelsStack.Push(currentClass == DirectionClass.LeftToRightOverride ? true : false))
{
stackOverflow++;
}
else
{
// Set the matching bit of 'overrideStatus' to one
// in order to know when you pop if you're in override state or not.
Helper.ResetBit(ref overrideStatus, levelsStack.GetCurrentLevel());
overrideClass = (currentClass == DirectionClass.LeftToRightOverride) ?
OverrideClass.OverrideClassLeft : OverrideClass.OverrideClassRight;
runLimits[runCount] = counter;
if (counter != cchText-1)
{
runCount++;
}
controlStack++;
}
levels[counter] = lastNonBnLevel;
break;
case DirectionClass.PopDirectionalFormat:
characterClass[counter] = DirectionClass.BoundaryNeutral;
if ((flags & Flags.IgnoreDirectionalControls) != 0)
break; // Ignore directional controls. They won't affect bidi state
if (stackOverflow != 0)
{
stackOverflow--;
}
else
{
if (levelsStack.Pop())
{
int newLevel = levelsStack.GetCurrentLevel();
// Override state being left or right is determined
// from the new level being even or odd.
overrideClass = (Helper.IsBitSet(overrideStatus, newLevel)) ? (Helper.IsOdd(newLevel) ?
OverrideClass.OverrideClassRight : OverrideClass.OverrideClassLeft):
OverrideClass.OverrideClassNeutral;
if (controlStack > 0)
{
runCount--;
controlStack--;
}
else
{
runLimits[runCount] = counter;
if (counter != cchText-1)
{
runCount++;
}
}
}
}
levels[counter] = lastNonBnLevel;
break;
default:
controlStack = 0;
if ( currentClass == DirectionClass.EuropeanNumber
&& (flags & Flags.OverrideEuropeanNumberResolution) != 0)
{
// Use the input DirectionClass explictly for EN. We don't
// need to copy the the Unicode classification data into it.
// However, assert that the input DirectionClass must be either be AN or EN
Invariant.Assert(characterClass[counter] == DirectionClass.ArabicNumber || characterClass[counter] == DirectionClass.EuropeanNumber);
}
else
{
// Non EuropeanNumber is not affected by the input DirectionClass.
characterClass[counter] = currentClass;
}
if(overrideClass != OverrideClass.OverrideClassNeutral)
{
characterClass[counter] = (overrideClass == OverrideClass.OverrideClassLeft) ?
DirectionClass.Left : DirectionClass.Right;
}
if (counter>0 && characterClass[counter-1]==DirectionClass.BoundaryNeutral)
{
if (levels[counter-1] < levels[counter])
{
levels[counter-1] = levels[counter];
}
}
break;
}
lastNonBnLevel = levels[counter];
if (wordCount > 1)
{
levels[counter+1] = levels[counter];
characterClass[counter+1] = characterClass[counter];
}
hiddenCharClass = characterClass[counter];
counter += wordCount;
}
runCount++;
if (stateOut != null)
{
stateOut.LevelStack = levelsStack.GetData();
stateOut.OverrideLevels = overrideStatus;
stateOut.Overflow = stackOverflow;
}
// Resolve neutral and weak types.
// Resolve implict levels.
// The lastRunLevel will hold the level of last processed run to be used
// to determine the sor of the next run. we can't depend on the level array
// because it can be changed in case of numerics. so level of the numerics
// will be increased by one or two.
lastRunLevel = baseLevel;
bool currenLimitIsParagraphTerminator;
bool previousLimitIsParagraphTerminator = false;
for(counter = 0; counter < runCount; counter++)
{
DirectionClass sor;
DirectionClass eor;
currenLimitIsParagraphTerminator = (levels[runLimits[counter]] == ParagraphTerminatorLevel);
if (currenLimitIsParagraphTerminator)
levels[runLimits[counter]] = baseLevel;
int runStart = (counter == 0) ? 0 : runLimits[counter - 1] + 1;
// If the level transition was due to a new paragraph
// we don't want pass the paragraph terminator position.
int offset = (counter != (runCount - 1)) ? (currenLimitIsParagraphTerminator ? 1 : 0) : 0;
int runLength = (counter == (runCount - 1)) ?
(int) ((cchText - runStart) - offset):
(int) (runLimits[counter] - runStart) + 1 - offset;
// See if we need to provide state information from a previous call
// or need to save it for a possible next call
bool incompleteRun = ((runCount - 1) == counter) && ((flags & Flags.IncompleteText) != 0)
&& (stateOut != null);
bool continuingAnalysis = (counter == 0) && (stateIn != null);
int runLengthResolved;
// First run or a run after paragraph terminator.
if ((counter == 0) || previousLimitIsParagraphTerminator)
{
sor = Helper.IsOdd(Math.Max(baseLevel, levels[runStart])) ?
DirectionClass.Right : DirectionClass.Left;
}
else
{
sor = Helper.IsOdd(Math.Max(lastRunLevel, levels[runStart])) ?
DirectionClass.Right : DirectionClass.Left;
}
lastRunLevel = levels[runStart];
// Last run or a run just before paragraph terminator.
if( ((runCount - 1) == counter) || currenLimitIsParagraphTerminator)
{
eor = Helper.IsOdd(Math.Max(levels[runStart], baseLevel)) ?
DirectionClass.Right : DirectionClass.Left;
}
else
{
// we will try to get first run which doesn't have just one
// control char like LRE,RLE,... and so on
int runNumber = counter+1;
while ( runNumber<runCount - 1 &&
runLimits[runNumber]-runLimits[runNumber-1]==1 &&
characterClass[runLimits[runNumber]] == DirectionClass.BoundaryNeutral)
{
runNumber++;
}
eor = Helper.IsOdd(Math.Max(levels[runStart], levels[runLimits[runNumber-1] + 1])) ?
DirectionClass.Right : DirectionClass.Left;
}
// If it is a continuation from a previous call, set sor
// to the last stron type saved in the input state parameter.
runLengthResolved = ResolveNeutralAndWeak(characterClass,
runStart,
runLength,
sor,
eor,
levels[runStart],
continuingAnalysis ? stateIn: null,
incompleteRun ? stateOut: null,
((counter == 0) && (stateIn == null)) ?
((flags & Flags.PreviousStrongIsArabic)!=0):
false,
flags);
if (!incompleteRun)
{
// If we in a complete run, we should be able to resolve everything
// unless we passed a corrupted data
Debug.Assert(runLengthResolved == runLength,
"Failed to resolve neutrals and weaks. Run#:" +
counter.ToString(CultureInfo.InvariantCulture));
}
else
{
lengthUnresolved = (runLength - runLengthResolved);
}
// Resolve implict levels.
// Also, takes care of Rule L1 (segment separators, paragraph separator,
// white spaces at the end of the line.
ResolveImplictLevels(characterClass,
charBuffer,
ichText,
runLength - lengthUnresolved,
levels,
runStart,
paragraphEmbeddingLevel);
previousLimitIsParagraphTerminator = currenLimitIsParagraphTerminator;
}
cchResolved = cchText - lengthUnresolved;
// if the charBuffer ended with paragraph seperator then we need to reset the Bidi state
if (((flags & Flags.IncompleteText) != 0) && (stateOut == null))
{
state.OverrideLevels = 0;
state.Overflow = 0;
if ((paragraphEmbeddingLevel & 1) != 0)
{
state.LastStrongClass = DirectionClass.Right;
state.LastNumberClass = DirectionClass.Right;
state.LevelStack = Bidi.StackRtl;
}
else
{
state.LastStrongClass = DirectionClass.Left;
state.LastNumberClass = DirectionClass.Left;
state.LevelStack = Bidi.StackLtr;
}
}
return true;
}
/// <summary>
/// Convenience method which calls <code>fill(buffer, reader, buffer.buffer.length)</code>. </summary>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public final boolean fill(CharacterBuffer buffer, java.io.Reader reader) throws java.io.IOException
public bool fill(CharacterBuffer buffer, Reader reader)
{
return(fill(buffer, reader, buffer.buffer.Length));
}
private Token _GetToken()
{
Token result = new Token();
int cur = _reader.Read();
if (cur == -1)
{
result._characterClass = CharacterClass.EndOfFile;
return(result);
}
char ch = (char)cur;
CharacterClass cc = _settings.Classifier [ch];
CharacterBuffer cb = new CharacterBuffer();
cb.Write(ch);
switch (cc)
{
case CharacterClass.Whitespace:
result._characterClass = CharacterClass.Whitespace;
result._value = _Collect(CharacterClass.Whitespace, ch);
if (_settings.SkipWhiteSpace)
{
return(_GetToken());
}
break;
case CharacterClass.Quote:
result._characterClass = CharacterClass.Quote;
result._value = _CollectUntil
(new char[] { ch },
new char[] { '\n' });
break;
case CharacterClass.Comment:
result._characterClass = CharacterClass.Comment;
result._value = _CollectUntil
(new char[] { '\n' },
new char[0]);
break;
case CharacterClass.Digit:
result._characterClass = CharacterClass.Digit;
result._value = _Collect(CharacterClass.Digit, ch);
break;
case CharacterClass.Punctuation:
result._characterClass = CharacterClass.Punctuation;
result._value = new string ( ch, 1 );
break;
case CharacterClass.Word:
result._characterClass = CharacterClass.Word;
result._value = _Collect(CharacterClass.Word, ch);
break;
case CharacterClass.EndOfFile:
result._characterClass = CharacterClass.EndOfFile;
break;
}
return(result);
}
public void BufferCharacter([FromBody] CharacterBuffer buff)
{
buffer = buff;
}
private const int MaxLevel = 63; // right to left
//
// Start BiDi class implementation
//
static private bool GetFirstStrongCharacter(
CharacterBuffer charBuffer,
int ichText,
int cchText,
ref DirectionClass strongClass)
{
DirectionClass currentClass = DirectionClass.ClassInvalid;
int counter = 0;
int wordCount;
while (counter<cchText)
{
int intChar = charBuffer[ichText + counter];
wordCount = 1;
if ((intChar & 0xFC00) == 0xD800)
{
intChar = DoubleWideChar.GetChar(charBuffer, ichText, cchText, counter, out wordCount);
}
currentClass = Classification.CharAttributeOf((int) Classification.GetUnicodeClass(intChar)).BiDi;
if (CharProperty[0, (int) currentClass]==1 || currentClass == DirectionClass.ParagraphSeparator)
{
break;
}
counter += wordCount;
}
if (CharProperty[0, (int) currentClass]==1)
{
strongClass = currentClass;
return true;
}
return false;
}
/// <summary> /// Fills the <see cref="CharacterBuffer"/> with characters read from the given /// reader <see cref="TextReader"/>. This method tries to read <code>numChars</code> /// characters into the <see cref="CharacterBuffer"/>, each call to fill will start /// filling the buffer from offset <c>0</c> up to <paramref name="numChars"/>. /// In case code points can span across 2 java characters, this method may /// only fill <c>numChars - 1</c> characters in order not to split in /// the middle of a surrogate pair, even if there are remaining characters in /// the <see cref="TextReader"/>. /// <para> /// Depending on the <see cref="LuceneVersion"/> passed to /// <see cref="CharacterUtils.GetInstance(LuceneVersion)"/> this method implements /// supplementary character awareness when filling the given buffer. For all /// <see cref="LuceneVersion"/> > 3.0 <see cref="Fill(CharacterBuffer, TextReader, int)"/> guarantees /// that the given <see cref="CharacterBuffer"/> will never contain a high surrogate /// character as the last element in the buffer unless it is the last available /// character in the reader. In other words, high and low surrogate pairs will /// always be preserved across buffer boarders. /// </para> /// <para> /// A return value of <c>false</c> means that this method call exhausted /// the reader, but there may be some bytes which have been read, which can be /// verified by checking whether <c>buffer.Length > 0</c>. /// </para> /// </summary> /// <param name="buffer"> /// the buffer to fill. </param> /// <param name="reader"> /// the reader to read characters from. </param> /// <param name="numChars"> /// the number of chars to read </param> /// <returns> <code>false</code> if and only if reader.read returned -1 while trying to fill the buffer </returns> /// <exception cref="IOException"> /// if the reader throws an <see cref="IOException"/>. </exception> public abstract bool Fill(CharacterBuffer buffer, TextReader reader, int numChars);
/// <summary> /// Fills the <seealso cref="CharacterBuffer"/> with characters read from the given /// reader <seealso cref="Reader"/>. This method tries to read <code>numChars</code> /// characters into the <seealso cref="CharacterBuffer"/>, each call to fill will start /// filling the buffer from offset <code>0</code> up to <code>numChars</code>. /// In case code points can span across 2 java characters, this method may /// only fill <code>numChars - 1</code> characters in order not to split in /// the middle of a surrogate pair, even if there are remaining characters in /// the <seealso cref="Reader"/>. /// <para> /// Depending on the <seealso cref="LuceneVersion"/> passed to /// <seealso cref="CharacterUtils#getInstance(Version)"/> this method implements /// supplementary character awareness when filling the given buffer. For all /// <seealso cref="LuceneVersion"/> > 3.0 <seealso cref="#fill(CharacterBuffer, Reader, int)"/> guarantees /// that the given <seealso cref="CharacterBuffer"/> will never contain a high surrogate /// character as the last element in the buffer unless it is the last available /// character in the reader. In other words, high and low surrogate pairs will /// always be preserved across buffer boarders. /// </para> /// <para> /// A return value of <code>false</code> means that this method call exhausted /// the reader, but there may be some bytes which have been read, which can be /// verified by checking whether <code>buffer.getLength() > 0</code>. /// </para> /// </summary> /// <param name="buffer"> /// the buffer to fill. </param> /// <param name="reader"> /// the reader to read characters from. </param> /// <param name="numChars"> /// the number of chars to read </param> /// <returns> <code>false</code> if and only if reader.read returned -1 while trying to fill the buffer </returns> /// <exception cref="IOException"> /// if the reader throws an <seealso cref="IOException"/>. </exception> public abstract bool Fill(CharacterBuffer buffer, Reader reader, int numChars);
static public int AdvanceUntilUTF16(
CharacterBuffer charBuffer,
int offsetToFirstChar,
int stringLength,
ushort mask,
out ushort charFlags
)
{
int i = offsetToFirstChar;
int limit = offsetToFirstChar + stringLength;
charFlags = 0;
while (i < limit)
{
unsafe
{
ushort flags = (ushort)Classification.CharAttributeTable[(int)GetUnicodeClassUTF16(charBuffer[i])].Flags;
if((flags & mask) != 0)
break;
charFlags |= flags;
}
i++;
}
return i - offsetToFirstChar;
}
public override bool Fill(CharacterBuffer buffer, Reader reader, int numChars)
{
Debug.Assert(buffer.buffer.Length >= 2);
if (numChars < 2 || numChars > buffer.buffer.Length)
{
throw new System.ArgumentException("numChars must be >= 2 and <= the buffer size");
}
char[] charBuffer = buffer.buffer;
buffer.offset = 0;
int offset;
// Install the previously saved ending high surrogate:
if (buffer.lastTrailingHighSurrogate != 0)
{
charBuffer[0] = buffer.lastTrailingHighSurrogate;
buffer.lastTrailingHighSurrogate = (char)0;
offset = 1;
}
else
{
offset = 0;
}
int read = ReadFully(reader, charBuffer, offset, numChars - offset);
buffer.length = offset + read;
bool result = buffer.length == numChars;
if (buffer.length < numChars)
{
// We failed to fill the buffer. Even if the last char is a high
// surrogate, there is nothing we can do
return result;
}
if (char.IsHighSurrogate(charBuffer[buffer.length - 1]))
{
buffer.lastTrailingHighSurrogate = charBuffer[--buffer.length];
}
return result;
}
public Character(CharacterBuffer buffer)
: this(buffer, false)
{
}
static private void ResolveImplictLevels(
IList<DirectionClass> characterClass, // [IN / OUT]
CharacterBuffer charBuffer, // [IN]
int ichText, // [IN]
int runLength, // [IN]
IList<byte> levels, // [IN / OUT]
int index,
byte paragraphEmbeddingLevel // [IN] Paragraph base level
)
{
if (runLength == 0)
{
return;
}
int counter = 0;
for (counter = runLength -1; counter >= 0; counter--)
{
Invariant.Assert(CharProperty[3, (int) characterClass[counter+index]]==1,
("Cannot have unresolved classes during implict levels resolution"));
int intChar = charBuffer[ichText + index+counter];
int wordCount = 1;
if (((intChar & 0xFC00) == 0xDC00) && counter > 0)
{
if ((charBuffer[ichText + index+counter-1] & 0xFC00) == 0xD800)
{
intChar = ((((charBuffer[ichText + index+counter-1] & 0x03ff) << 10) | (charBuffer[ichText + index+counter] & 0x3ff)) + 0x10000);
wordCount = 2;
}
}
DirectionClass directionClass;
directionClass = Classification.CharAttributeOf((int) Classification.GetUnicodeClass(intChar)).BiDi;
if (directionClass == DirectionClass.ParagraphSeparator ||
directionClass == DirectionClass.SegmentSeparator)
{
// Rule L1: segment separator and paragraph separator should use paragraph embedding level
levels[counter+index] = paragraphEmbeddingLevel;
}
else
{
levels[counter+index] =
(byte)((ImplictPush[Helper.IsOdd(levels[counter+index]) ? 1 : 0,
(int)characterClass[index+counter]]) + levels[counter+index]);
}
if (wordCount > 1)
{
levels[counter+index-1] = levels[counter+index];
counter--;
}
}
}
/// <summary>
/// Convenience method which calls <code>fill(buffer, reader, buffer.buffer.length)</code>. </summary>
public virtual bool Fill(CharacterBuffer buffer, Reader reader)
{
return Fill(buffer, reader, buffer.buffer.Length);
}
private bool ReadDecodedCharactersUntilSentinel(CharacterBuffer buffer, char sentinel)
{
bool result = false;
int startOffset = _DecodedCharacterOffset;
while (_DecodedCharacterOffset < _DecodedCharacterCount) {
if (_DecodedBuffer[_DecodedCharacterOffset++] == sentinel) {
result = true;
break;
}
}
int charCount = _DecodedCharacterOffset - startOffset;
if (result)
charCount -= 1;
buffer.Append(_DecodedBuffer, startOffset, charCount);
return result;
}
public override bool Fill(CharacterBuffer buffer, Reader reader, int numChars)
{
Debug.Assert(buffer.buffer.Length >= 1);
if (numChars < 1 || numChars > buffer.buffer.Length)
{
throw new System.ArgumentException("numChars must be >= 1 and <= the buffer size");
}
buffer.offset = 0;
int read = ReadFully(reader, buffer.buffer, 0, numChars);
buffer.length = read;
buffer.lastTrailingHighSurrogate = (char)0;
return read == numChars;
}
public ReadToEndThunk()
{
Buffer = new CharacterBuffer();
OnDecodeComplete = _OnDecodeComplete;
}