C++ PRInt32函数代码示例

void
mozTXTToHTMLConv::CompleteAbbreviatedURL(const PRUnichar * aInString, PRInt32 aInLength, 
                                         const PRUint32 pos, nsString& aOutString)
{
  NS_ASSERTION(PRInt32(pos) < aInLength, "bad args to CompleteAbbreviatedURL, see bug #190851");
  if (PRInt32(pos) >= aInLength)
    return;

  if (aInString[pos] == '@')
  {
    // only pre-pend a mailto url if the string contains a .domain in it..
    //i.e. we want to linkify [email protected] but not "let's meet @8pm"
    nsDependentString inString(aInString, aInLength);
    if (inString.FindChar('.', pos) != kNotFound) // if we have a '.' after the @ sign....
    {
      aOutString.AssignLiteral("mailto:");
      aOutString += aInString;
    }
  }
  else if (aInString[pos] == '.')
  {
    if (ItMatchesDelimited(aInString, aInLength,
                           NS_LITERAL_STRING("www.").get(), 4, LT_IGNORE, LT_IGNORE))
    {
      aOutString.AssignLiteral("http://");
      aOutString += aInString;
    }
    else if (ItMatchesDelimited(aInString,aInLength, NS_LITERAL_STRING("ftp.").get(), 4, LT_IGNORE, LT_IGNORE))
    { 
      aOutString.AssignLiteral("ftp://");
      aOutString += aInString;
    }
  }
}

void nsTableColFrame::Dump(PRInt32 aIndent)
{
  char* indent = new char[aIndent + 1];
  if (!indent) return;
  for (PRInt32 i = 0; i < aIndent + 1; i++) {
    indent[i] = ' ';
  }
  indent[aIndent] = 0;

  printf("%s**START COL DUMP**\n%s colIndex=%d coltype=",
    indent, indent, mColIndex);
  nsTableColType colType = GetColType();
  switch (colType) {
  case eColContent:
    printf(" content ");
    break;
  case eColAnonymousCol: 
    printf(" anonymous-column ");
    break;
  case eColAnonymousColGroup:
    printf(" anonymous-colgroup ");
    break;
  case eColAnonymousCell: 
    printf(" anonymous-cell ");
    break;
  }
  printf("\nm:%d c:%d(%c) p:%f sm:%d sc:%d sp:%f f:%d",
         PRInt32(mMinCoord), PRInt32(mPrefCoord),
         mHasSpecifiedCoord ? 's' : 'u', mPrefPercent,
         PRInt32(mSpanMinCoord), PRInt32(mSpanPrefCoord),
         mSpanPrefPercent,
         PRInt32(GetFinalWidth()));
  printf("\n%s**END COL DUMP** ", indent);
  delete [] indent;
}

bool
mozTXTToHTMLConv::SmilyHit(const PRUnichar * aInString, PRInt32 aLength, bool col0,
         const char* tagTXT, const char* imageName,
         nsString& outputHTML, PRInt32& glyphTextLen)
{
  if ( !aInString || !tagTXT || !imageName )
      return false;

  PRInt32 tagLen = strlen(tagTXT);
 
  PRUint32 delim = (col0 ? 0 : 1) + tagLen;

  if
    (
      (col0 || IsSpace(aInString[0]))
        &&
        (
          aLength <= PRInt32(delim) ||
          IsSpace(aInString[delim]) ||
          (aLength > PRInt32(delim + 1)
            &&
            (
              aInString[delim] == '.' ||
              aInString[delim] == ',' ||
              aInString[delim] == ';' ||
              aInString[delim] == '8' ||
              aInString[delim] == '>' ||
              aInString[delim] == '!' ||
              aInString[delim] == '?'
            )
            && IsSpace(aInString[delim + 1]))
        )
        && ItMatchesDelimited(aInString, aLength, NS_ConvertASCIItoUTF16(tagTXT).get(), tagLen, 
                              col0 ? LT_IGNORE : LT_DELIMITER, LT_IGNORE)
	        // Note: tests at different pos for LT_IGNORE and LT_DELIMITER
    )
  {
    if (!col0)
    {
      outputHTML.Truncate();
      outputHTML.Append(PRUnichar(' '));
    }

    outputHTML.AppendLiteral("<span class=\""); // <span class="
    AppendASCIItoUTF16(imageName, outputHTML);  // e.g. smiley-frown
    outputHTML.AppendLiteral("\" title=\"");    // " title="     
    AppendASCIItoUTF16(tagTXT, outputHTML);     // smiley tooltip
    outputHTML.AppendLiteral("\"><span>");      // "><span>      
    AppendASCIItoUTF16(tagTXT, outputHTML);     // original text 
    outputHTML.AppendLiteral("</span></span>"); // </span></span>
    glyphTextLen = (col0 ? 0 : 1) + tagLen;
    return true;
  }

  return false;
}

static void AppendSubString(nsAString& aString, nsIContent* aContent,
                            PRUint32 aXPOffset, PRUint32 aXPLength)
{
  NS_ASSERTION(aContent->IsNodeOfType(nsINode::eTEXT),
               "aContent is not a text node!");
  const nsTextFragment* text = aContent->GetText();
  if (!text)
    return;
  text->AppendTo(aString, PRInt32(aXPOffset), PRInt32(aXPLength));
}

NS_IMETHODIMP
nsHTMLTableRowElement::InsertCell(PRInt32 aIndex, nsIDOMHTMLElement** aValue)
{
  *aValue = nsnull;

  if (aIndex < -1) {
    return NS_ERROR_DOM_INDEX_SIZE_ERR;
  }
  
  nsCOMPtr<nsIDOMHTMLCollection> cells;
  GetCells(getter_AddRefs(cells));

  PRUint32 cellCount;
  cells->GetLength(&cellCount);

  if (aIndex > PRInt32(cellCount)) {
    return NS_ERROR_DOM_INDEX_SIZE_ERR;
  }

  PRBool doInsert = (aIndex < PRInt32(cellCount)) && (aIndex != -1);

  // create the cell
  nsCOMPtr<nsINodeInfo> nodeInfo;
  nsContentUtils::NameChanged(mNodeInfo, nsGkAtoms::td,
                              getter_AddRefs(nodeInfo));

  nsCOMPtr<nsIContent> cellContent = NS_NewHTMLTableCellElement(nodeInfo);
  if (!cellContent) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  nsCOMPtr<nsIDOMNode> cellNode(do_QueryInterface(cellContent));
  NS_ASSERTION(cellNode, "Should implement nsIDOMNode!");

  nsCOMPtr<nsIDOMNode> retChild;

  nsresult rv;
  if (doInsert) {
    nsCOMPtr<nsIDOMNode> refCell;
    cells->Item(aIndex, getter_AddRefs(refCell));

    rv = InsertBefore(cellNode, refCell, getter_AddRefs(retChild));
  } else {
    rv = AppendChild(cellNode, getter_AddRefs(retChild));
  }

  if (retChild) {
    CallQueryInterface(retChild, aValue);
  }

  return NS_OK;
}

NS_IMETHODIMP
nsDOMMouseScrollEvent::GetAxis(PRInt32* aResult)
{
  NS_ENSURE_ARG_POINTER(aResult);

  if (mEvent->eventStructType == NS_MOUSE_SCROLL_EVENT) {
    PRUint32 flags = static_cast<nsMouseScrollEvent*>(mEvent)->scrollFlags;
    *aResult = (flags & nsMouseScrollEvent::kIsHorizontal)
         ? PRInt32(HORIZONTAL_AXIS) : PRInt32(VERTICAL_AXIS);
  } else {
    *aResult = 0;
  }
  return NS_OK;
}

CharClass
WordSplitState::ClassifyCharacter(PRInt32 aIndex, PRBool aRecurse) const
{
  NS_ASSERTION(aIndex >= 0 && aIndex <= PRInt32(mDOMWordText.Length()),
               "Index out of range");
  if (aIndex == PRInt32(mDOMWordText.Length()))
    return CHAR_CLASS_SEPARATOR;

  // this will classify the character, we want to treat "ignorable" characters
  // such as soft hyphens as word characters.
  nsIUGenCategory::nsUGenCategory
    charCategory = mWordUtil->GetCategories()->Get(PRUint32(mDOMWordText[aIndex]));
  if (charCategory == nsIUGenCategory::kLetter ||
      IsIgnorableCharacter(mDOMWordText[aIndex]))
    return CHAR_CLASS_WORD;

  // If conditional punctuation is surrounded immediately on both sides by word
  // characters it also counts as a word character.
  if (IsConditionalPunctuation(mDOMWordText[aIndex])) {
    if (!aRecurse) {
      // not allowed to look around, this punctuation counts like a separator
      return CHAR_CLASS_SEPARATOR;
    }

    // check the left-hand character
    if (aIndex == 0)
      return CHAR_CLASS_SEPARATOR;
    if (ClassifyCharacter(aIndex - 1, false) != CHAR_CLASS_WORD)
      return CHAR_CLASS_SEPARATOR;

    // now we know left char is a word-char, check the right-hand character
    if (aIndex == PRInt32(mDOMWordText.Length()) - 1)
      return CHAR_CLASS_SEPARATOR;
    if (ClassifyCharacter(aIndex + 1, false) != CHAR_CLASS_WORD)
      return CHAR_CLASS_SEPARATOR;

    // char on either side is a word, this counts as a word
    return CHAR_CLASS_WORD;
  }

  // all other punctuation
  if (charCategory == nsIUGenCategory::kSeparator ||
      charCategory == nsIUGenCategory::kOther ||
      charCategory == nsIUGenCategory::kPunctuation ||
      charCategory == nsIUGenCategory::kSymbol)
    return CHAR_CLASS_SEPARATOR;

  // any other character counts as a word
  return CHAR_CLASS_WORD;
}

// EXTEND_PAD won't help us here; we have to create a temporary surface to hold
// the subimage of pixels we're allowed to sample.
static already_AddRefed<gfxDrawable>
CreateSamplingRestrictedDrawable(gfxDrawable* aDrawable,
                                 gfxContext* aContext,
                                 const gfxMatrix& aUserSpaceToImageSpace,
                                 const gfxRect& aSourceRect,
                                 const gfxRect& aSubimage,
                                 const gfxImageSurface::gfxImageFormat aFormat)
{
    gfxRect userSpaceClipExtents = aContext->GetClipExtents();
    // This isn't optimal --- if aContext has a rotation then GetClipExtents
    // will have to do a bounding-box computation, and TransformBounds might
    // too, so we could get a better result if we computed image space clip
    // extents in one go --- but it doesn't really matter and this is easier
    // to understand.
    gfxRect imageSpaceClipExtents =
        aUserSpaceToImageSpace.TransformBounds(userSpaceClipExtents);
    // Inflate by one pixel because bilinear filtering will sample at most
    // one pixel beyond the computed image pixel coordinate.
    imageSpaceClipExtents.Outset(1.0);

    gfxRect needed = imageSpaceClipExtents.Intersect(aSourceRect);
    needed = needed.Intersect(aSubimage);
    needed.RoundOut();

    // if 'needed' is empty, nothing will be drawn since aFill
    // must be entirely outside the clip region, so it doesn't
    // matter what we do here, but we should avoid trying to
    // create a zero-size surface.
    if (needed.IsEmpty())
        return nsnull;

    gfxIntSize size(PRInt32(needed.Width()), PRInt32(needed.Height()));
    nsRefPtr<gfxASurface> temp =
        gfxPlatform::GetPlatform()->CreateOffscreenSurface(size, gfxASurface::ContentFromFormat(aFormat));
    if (!temp || temp->CairoStatus())
        return nsnull;

    nsRefPtr<gfxContext> tmpCtx = new gfxContext(temp);
    tmpCtx->SetOperator(OptimalFillOperator());
    aDrawable->Draw(tmpCtx, needed - needed.pos, PR_TRUE,
                    gfxPattern::FILTER_FAST, gfxMatrix().Translate(needed.pos));

    nsRefPtr<gfxPattern> resultPattern = new gfxPattern(temp);
    if (!resultPattern)
        return nsnull;

    nsRefPtr<gfxDrawable> drawable = 
        new gfxSurfaceDrawable(temp, size, gfxMatrix().Translate(-needed.pos));
    return drawable.forget();
}

NS_IMETHODIMP InsertElementTxn::DoTransaction(void)
{
#ifdef DEBUG
  if (gNoisy) 
  { 
    nsCOMPtr<nsIContent>nodeAsContent = do_QueryInterface(mNode);
    nsCOMPtr<nsIContent>parentAsContent = do_QueryInterface(mParent);
    nsString namestr;
    mNode->GetNodeName(namestr);
    char* nodename = ToNewCString(namestr);
    printf("%p Do Insert Element of %p <%s> into parent %p at offset %d\n", 
           static_cast<void*>(this),
           static_cast<void*>(nodeAsContent.get()),
           nodename,
           static_cast<void*>(parentAsContent.get()),
           mOffset); 
    nsMemory::Free(nodename);
  }
#endif

  NS_ENSURE_TRUE(mNode && mParent, NS_ERROR_NOT_INITIALIZED);

  nsCOMPtr<nsINode> parent = do_QueryInterface(mParent);
  NS_ENSURE_STATE(parent);

  PRUint32 count = parent->GetChildCount();
  if (mOffset > PRInt32(count) || mOffset == -1) {
    // -1 is sentinel value meaning "append at end"
    mOffset = count;
  }

  nsIContent* refContent = parent->GetChildAt(mOffset);
  // note, it's ok for refNode to be null.  that means append
  nsCOMPtr<nsIDOMNode> refNode = refContent ? refContent->AsDOMNode() : nullptr;

  mEditor->MarkNodeDirty(mNode);

  nsCOMPtr<nsIDOMNode> resultNode;
  nsresult result = mParent->InsertBefore(mNode, refNode, getter_AddRefs(resultNode));
  NS_ENSURE_SUCCESS(result, result);
  NS_ENSURE_TRUE(resultNode, NS_ERROR_NULL_POINTER);

  // only set selection to insertion point if editor gives permission
  bool bAdjustSelection;
  mEditor->ShouldTxnSetSelection(&bAdjustSelection);
  if (bAdjustSelection)
  {
    nsCOMPtr<nsISelection> selection;
    result = mEditor->GetSelection(getter_AddRefs(selection));
    NS_ENSURE_SUCCESS(result, result);
    NS_ENSURE_TRUE(selection, NS_ERROR_NULL_POINTER);
    // place the selection just after the inserted element
    selection->Collapse(mParent, mOffset+1);
  }
  else
  {
    // do nothing - dom range gravity will adjust selection
  }
  return result;
}

void
mozInlineSpellWordUtil::BuildRealWords()
{
  // This is pretty simple. We just have to walk mSoftText, tokenizing it
  // into "real words".
  // We do an outer traversal of words delimited by IsDOMWordSeparator, calling
  // SplitDOMWord on each of those DOM words
  PRInt32 wordStart = -1;
  mRealWords.Clear();
  for (PRInt32 i = 0; i < PRInt32(mSoftText.Length()); ++i) {
    if (IsDOMWordSeparator(mSoftText.CharAt(i))) {
      if (wordStart >= 0) {
        SplitDOMWord(wordStart, i);
        wordStart = -1;
      }
    } else {
      if (wordStart < 0) {
        wordStart = i;
      }
    }
  }
  if (wordStart >= 0) {
    SplitDOMWord(wordStart, mSoftText.Length());
  }
}

nsresult
nsHTMLFieldSetElement::InsertChildAt(nsIContent* aChild, PRUint32 aIndex,
                                     bool aNotify)
{
  bool firstLegendHasChanged = false;

  if (aChild->IsHTML(nsGkAtoms::legend)) {
    if (!mFirstLegend) {
      mFirstLegend = aChild;
      // We do not want to notify the first time mFirstElement is set.
    } else {
      // If mFirstLegend is before aIndex, we do not change it.
      // Otherwise, mFirstLegend is now aChild.
      if (PRInt32(aIndex) <= IndexOf(mFirstLegend)) {
        mFirstLegend = aChild;
        firstLegendHasChanged = true;
      }
    }
  }

  nsresult rv = nsGenericHTMLFormElement::InsertChildAt(aChild, aIndex, aNotify);
  NS_ENSURE_SUCCESS(rv, rv);

  if (firstLegendHasChanged) {
    NotifyElementsForFirstLegendChange(aNotify);
  }

  return rv;
}

nsresult
nsDOMWorkerTimeout::FunctionCallback::Run(nsDOMWorkerTimeout* aTimeout,
                                          JSContext* aCx)
{
  PRInt32 lateness = NS_MAX(0, PRInt32(PR_Now() - aTimeout->mTargetTime)) /
                     (PRTime)PR_USEC_PER_MSEC;
  mCallbackArgs[mCallbackArgsLength - 1] = INT_TO_JSVAL(lateness);

  JSObject* global = JS_GetGlobalObject(aCx);
  NS_ENSURE_TRUE(global, NS_ERROR_FAILURE);

  nsTArray<jsval> argv;
  PRBool success = argv.SetCapacity(mCallbackArgsLength);
  NS_ENSURE_TRUE(success, NS_ERROR_OUT_OF_MEMORY);

  for (PRUint32 index = 0; index < mCallbackArgsLength; index++) {
    argv.AppendElement(mCallbackArgs[index]);
  }

  jsval rval;
  JSBool ok =
    JS_CallFunctionValue(aCx, global, mCallback, mCallbackArgsLength,
                         argv.Elements(), &rval);
  NS_ENSURE_TRUE(ok, NS_ERROR_FAILURE);

  return NS_OK;
}

static PRInt32 ConditionDimension(float aValue, PRInt32 aDefault)
{
  // This will exclude NaNs and infinities
  if (aValue >= 1.0 && aValue <= 10000.0)
    return PRInt32(NS_round(aValue));
  return aDefault;
}

bool
nsString::EqualsIgnoreCase( const char* aString, PRInt32 aCount ) const
  {
    PRUint32 strLen = nsCharTraits<char>::length(aString);

    PRInt32 maxCount = PRInt32(NS_MIN(mLength, strLen));

    PRInt32 compareCount;
    if (aCount < 0 || aCount > maxCount)
      compareCount = maxCount;
    else
      compareCount = aCount;

    PRInt32 result =
        nsBufferRoutines<PRUnichar>::compare(mData, aString, compareCount, true);

    if (result == 0 &&
          (aCount < 0 || strLen < PRUint32(aCount) || mLength < PRUint32(aCount)))
      {
        // Since the caller didn't give us a length to test, or strings shorter
        // than aCount, and compareCount characters matched, we have to assume
        // that the longer string is greater.

        if (mLength != strLen)
          result = 1; // Arbitrarily using any number != 0
      }
    return result == 0;
  }

/**
 *  This methods cans the given buffer for the given char
 *  
 *  @update  gess 3/25/98
 *  @param   aDest is the buffer to be searched
 *  @param   aDestLength is the size (in char-units, not bytes) of the buffer
 *  @param   anOffset is the start pos to begin searching
 *  @param   aChar is the target character we're looking for
 *  @param   aCount tells us how many characters to iterate through (which may be different than aLength); -1 means use full length.
 *  @return  index of pos if found, else -1 (kNotFound)
 */
static PRInt32
RFindChar2(const PRUnichar* aDest,PRUint32 aDestLength,PRInt32 anOffset,const PRUnichar aChar,PRInt32 aCount) {

  if(anOffset < 0)
    anOffset=(PRInt32)aDestLength-1;

  if(aCount < 0)
    aCount = PRInt32(aDestLength);

  if((0 < aDestLength) && ((PRUint32)anOffset < aDestLength)) {
 
    if(0 < aCount) {

      const PRUnichar* root      = aDest;
      const PRUnichar* rightmost = root + anOffset;  
      const PRUnichar* min       = rightmost - aCount + 1;
      const PRUnichar* leftmost  = (min<root) ? root: min;
      
      while(leftmost <= rightmost){
        
        if((*rightmost) == aChar)
          return rightmost - root;
        
        --rightmost;
      }
    }
  }

  return kNotFound;
}