C++ PRUnichar函数代码示例

NS_IMETHODIMP
nsInternetCiter::Rewrap(const nsAString& aInString,
                        PRUint32 aWrapCol, PRUint32 aFirstLineOffset,
                        PRBool aRespectNewlines,
                        nsAString& aOutString)
{
  // There shouldn't be returns in this string, only dom newlines.
  // Check to make sure:
#ifdef DEBUG
  PRInt32 cr = aInString.FindChar(PRUnichar('\r'));
  NS_ASSERTION((cr < 0), "Rewrap: CR in string gotten from DOM!\n");
#endif /* DEBUG */

  aOutString.Truncate();

  nsCOMPtr<nsILineBreaker> lineBreaker;
  nsILineBreakerFactory *lf;
  nsresult rv;
  rv = CallGetService(NS_LWBRK_CONTRACTID, &lf);
  if (NS_SUCCEEDED(rv))
  {
    nsAutoString lbarg;
    lf->GetBreaker(lbarg, getter_AddRefs(lineBreaker));
    NS_RELEASE(lf);
  }

  // Loop over lines in the input string, rewrapping each one.
  PRUint32 length;
  PRUint32 posInString = 0;
  PRUint32 outStringCol = 0;
  PRUint32 citeLevel = 0;
  const nsPromiseFlatString &tString = PromiseFlatString(aInString);
  length = tString.Length();
#ifdef DEBUG_wrapping
  int loopcount = 0;
#endif
  while (posInString < length)
  {
#ifdef DEBUG_wrapping
    printf("Outer loop: '%s'\n",
           NS_LossyConvertUCS2toASCII(Substring(tString, posInString,
                                                length-posInString)).get());
    printf("out string is now: '%s'\n",
           NS_LossyConvertUCS2toASCII(aOutString).get());

#endif

    // Get the new cite level here since we're at the beginning of a line
    PRUint32 newCiteLevel = 0;
    while (posInString < length && tString[posInString] == gt)
    {
      ++newCiteLevel;
      ++posInString;
      while (posInString < length && tString[posInString] == space)
        ++posInString;
    }
    if (posInString >= length)
      break;

    // Special case: if this is a blank line, maintain a blank line
    // (retain the original paragraph breaks)
    if (tString[posInString] == nl && !aOutString.IsEmpty())
    {
      if (aOutString.Last() != nl)
        aOutString.Append(nl);
      AddCite(aOutString, newCiteLevel);
      aOutString.Append(nl);

      ++posInString;
      outStringCol = 0;
      continue;
    }

    // If the cite level has changed, then start a new line with the
    // new cite level (but if we're at the beginning of the string,
    // don't bother).
    if (newCiteLevel != citeLevel && posInString > newCiteLevel+1
        && outStringCol != 0)
    {
      BreakLine(aOutString, outStringCol, 0);
    }
    citeLevel = newCiteLevel;

    // Prepend the quote level to the out string if appropriate
    if (outStringCol == 0)
    {
      AddCite(aOutString, citeLevel);
      outStringCol = citeLevel + (citeLevel ? 1 : 0);
    }
    // If it's not a cite, and we're not at the beginning of a line in
    // the output string, add a space to separate new text from the
    // previous text.
    else if (outStringCol > citeLevel)
    {
      aOutString.Append(space);
      ++outStringCol;
    }

    // find the next newline -- don't want to go farther than that
    PRInt32 nextNewline = tString.FindChar(nl, posInString);
//.........这里部分代码省略.........

void
nsFont::CopyAlternates(const nsFont& aOther)
{
  variantAlternates = aOther.variantAlternates;
  alternateValues = aOther.alternateValues;
  featureValueLookup = aOther.featureValueLookup;
}

static bool IsGenericFontFamily(const nsString& aFamily)
{
  uint8_t generic;
  nsFont::GetGenericID(aFamily, &generic);
  return generic != kGenericFont_NONE;
}

const PRUnichar kSingleQuote  = PRUnichar('\'');
const PRUnichar kDoubleQuote  = PRUnichar('\"');
const PRUnichar kComma        = PRUnichar(',');

bool nsFont::EnumerateFamilies(nsFontFamilyEnumFunc aFunc, void* aData) const
{
  const PRUnichar *p, *p_end;
  name.BeginReading(p);
  name.EndReading(p_end);
  nsAutoString family;

  while (p < p_end) {
    while (nsCRT::IsAsciiSpace(*p))
      if (++p == p_end)
        return true;

void
GetReversedHostname(const nsString& aForward, nsString& aRevHost)
{
  ReverseString(aForward, aRevHost);
  aRevHost.Append(PRUnichar('.'));
}

nsresult
nsRDFXMLSerializer::SerializeDescription(nsIOutputStream* aStream,
                                         nsIRDFResource* aResource)
{
    nsresult rv;

    PRBool isTypedNode = PR_FALSE;
    nsCString typeQName;

    nsCOMPtr<nsIRDFNode> typeNode;
    mDataSource->GetTarget(aResource, kRDF_type, PR_TRUE, getter_AddRefs(typeNode));
    if (typeNode) {
        nsCOMPtr<nsIRDFResource> type = do_QueryInterface(typeNode, &rv);
        if (type) {
            // Try to get a namespace prefix.  If none is available,
            // just treat the description as if it weren't a typed node 
            // after all and emit rdf:type as a normal property.  This 
            // seems preferable to using a bogus (invented) prefix.
            isTypedNode = NS_SUCCEEDED(GetQName(type, typeQName));
        }
    }

    nsCAutoString uri;
    rv = aResource->GetValueUTF8(uri);
    if (NS_FAILED(rv)) return rv;

    rdf_MakeRelativeRef(mBaseURLSpec, uri);
    rdf_EscapeAttributeValue(uri);

    // Emit an open tag and the subject
    if (isTypedNode) {
        rv = rdf_BlockingWrite(aStream, NS_LITERAL_STRING("  <"));
        if (NS_FAILED(rv)) return rv;
        // Watch out for the default namespace!
        rv = rdf_BlockingWrite(aStream, typeQName);
        if (NS_FAILED(rv)) return rv;
    }
    else {
        rv = rdf_BlockingWrite(aStream, kRDFDescriptionOpen,
                               sizeof(kRDFDescriptionOpen) - 1);
        if (NS_FAILED(rv)) return rv;
    }
    if (uri[0] == PRUnichar('#')) {
        uri.Cut(0, 1);
        rv = rdf_BlockingWrite(aStream, kIDAttr, sizeof(kIDAttr) - 1);
    }
    else {
        rv = rdf_BlockingWrite(aStream, kAboutAttr, sizeof(kAboutAttr) - 1);
    }
    if (NS_FAILED(rv)) return rv;

    uri.Append('"');
    rv = rdf_BlockingWrite(aStream, uri);
    if (NS_FAILED(rv)) return rv;

    // Any value that's a literal we can write out as an inline
    // attribute on the RDF:Description
    nsAutoTArray<nsIRDFResource*, 8> visited;
    PRInt32 skipped = 0;

    nsCOMPtr<nsISimpleEnumerator> arcs;
    mDataSource->ArcLabelsOut(aResource, getter_AddRefs(arcs));

    if (arcs) {
        // Don't re-serialize rdf:type later on
        if (isTypedNode)
            visited.AppendElement(kRDF_type);

        while (1) {
            PRBool hasMore = PR_FALSE;
            arcs->HasMoreElements(&hasMore);
            if (! hasMore)
                break;

            nsCOMPtr<nsISupports> isupports;
            arcs->GetNext(getter_AddRefs(isupports));

            nsCOMPtr<nsIRDFResource> property = do_QueryInterface(isupports);
            if (! property)
                continue;

            // Ignore properties that pertain to containers; we may be
            // called from SerializeContainer() if the container resource
            // has been assigned non-container properties.
            if (IsContainerProperty(property))
                continue;

            // Only serialize values for the property once.
            if (visited.Contains(property.get()))
                continue;

            visited.AppendElement(property.get());

            SerializeProperty(aStream, aResource, property, PR_TRUE, &skipped);
        }
    }

    if (skipped) {
        // Close the RDF:Description tag.
        rv = rdf_BlockingWrite(aStream, NS_LITERAL_CSTRING(">\n"));
//.........这里部分代码省略.........

PRBool nsCSSScanner::NextURL(nsresult& aErrorCode, nsCSSToken& aToken)
{
  PRInt32 ch = Read(aErrorCode);
  if (ch < 0) {
    return PR_FALSE;
  }
  if (ch < 256) {
    PRUint8* lexTable = gLexTable;

    // STRING
    if ((ch == '"') || (ch == '\'')) {
      return ParseString(aErrorCode, ch, aToken);
    }

    // WS
    if ((lexTable[ch] & IS_WHITESPACE) != 0) {
      aToken.mType = eCSSToken_WhiteSpace;
      aToken.mIdent.Assign(PRUnichar(ch));
      (void) EatWhiteSpace(aErrorCode);
      return PR_TRUE;
    }
    if (ch == '/') {
      PRInt32 nextChar = Peek(aErrorCode);
      if (nextChar == '*') {
        (void) Read(aErrorCode);
#if 0
        // If we change our storage data structures such that comments are
        // stored (for Editor), we should reenable this code, condition it
        // on being in editor mode, and apply glazou's patch from bug
        // 60290.
        aToken.mIdent.SetCapacity(2);
        aToken.mIdent.Assign(PRUnichar(ch));
        aToken.mIdent.Append(PRUnichar(nextChar));
        return ParseCComment(aErrorCode, aToken);
#endif
        return SkipCComment(aErrorCode) && Next(aErrorCode, aToken);
      }
    }

    // Process a url lexical token. A CSS1 url token can contain
    // characters beyond identifier characters (e.g. '/', ':', etc.)
    // Because of this the normal rules for tokenizing the input don't
    // apply very well. To simplify the parser and relax some of the
    // requirements on the scanner we parse url's here. If we find a
    // malformed URL then we emit a token of type "InvalidURL" so that
    // the CSS1 parser can ignore the invalid input. We attempt to eat
    // the right amount of input data when an invalid URL is presented.

    aToken.mType = eCSSToken_InvalidURL;
    nsString& ident = aToken.mIdent;
    ident.SetLength(0);

    if (ch == ')') {
      Pushback(ch);
      // empty url spec; just get out of here
      aToken.mType = eCSSToken_URL;
    } else {
      // start of a non-quoted url
      Pushback(ch);
      PRBool ok = PR_TRUE;
      for (;;) {
        ch = Read(aErrorCode);
        if (ch < 0) break;
        if (ch == CSS_ESCAPE) {
          ParseAndAppendEscape(aErrorCode, ident);
        } else if ((ch == '"') || (ch == '\'') || (ch == '(')) {
          // This is an invalid URL spec
          ok = PR_FALSE;
        } else if ((256 > ch) && ((gLexTable[ch] & IS_WHITESPACE) != 0)) {
          // Whitespace is allowed at the end of the URL
          (void) EatWhiteSpace(aErrorCode);
          if (LookAhead(aErrorCode, ')')) {
            Pushback(')');  // leave the closing symbol
            // done!
            break;
          }
          // Whitespace is followed by something other than a
          // ")". This is an invalid url spec.
          ok = PR_FALSE;
        } else if (ch == ')') {
          Unread();
          // All done
          break;
        } else {
          // A regular url character.
          ident.Append(PRUnichar(ch));
        }
      }

      // If the result of the above scanning is ok then change the token
      // type to a useful one.
      if (ok) {
        aToken.mType = eCSSToken_URL;
      }
    }
  }
  return PR_TRUE;
}

void
gfxGDIFont::Initialize()
{
    NS_ASSERTION(!mMetrics, "re-creating metrics? this will leak");

    LOGFONTW logFont;

    if (mAdjustedSize == 0.0) {
        mAdjustedSize = mStyle.size;
        if (mStyle.sizeAdjust != 0.0 && mAdjustedSize > 0.0) {
            // to implement font-size-adjust, we first create the "unadjusted" font
            FillLogFont(logFont, mAdjustedSize);
            mFont = ::CreateFontIndirectW(&logFont);

            // initialize its metrics so we can calculate size adjustment
            Initialize();

            // calculate the properly adjusted size, and then proceed
            // to recreate mFont and recalculate metrics
            gfxFloat aspect = mMetrics->xHeight / mMetrics->emHeight;
            mAdjustedSize = mStyle.GetAdjustedSize(aspect);

            // delete the temporary font and metrics
            ::DeleteObject(mFont);
            mFont = nsnull;
            delete mMetrics;
            mMetrics = nsnull;
        }
    }

    FillLogFont(logFont, mAdjustedSize);
    mFont = ::CreateFontIndirectW(&logFont);

    mMetrics = new gfxFont::Metrics;
    ::memset(mMetrics, 0, sizeof(*mMetrics));

    AutoDC dc;
    SetGraphicsMode(dc.GetDC(), GM_ADVANCED);
    AutoSelectFont selectFont(dc.GetDC(), mFont);

    // Get font metrics
    OUTLINETEXTMETRIC oMetrics;
    TEXTMETRIC& metrics = oMetrics.otmTextMetrics;

    if (0 < GetOutlineTextMetrics(dc.GetDC(), sizeof(oMetrics), &oMetrics)) {
        mMetrics->superscriptOffset = (double)oMetrics.otmptSuperscriptOffset.y;
        // Some fonts have wrong sign on their subscript offset, bug 410917.
        mMetrics->subscriptOffset = fabs((double)oMetrics.otmptSubscriptOffset.y);
        mMetrics->strikeoutSize = (double)oMetrics.otmsStrikeoutSize;
        mMetrics->strikeoutOffset = (double)oMetrics.otmsStrikeoutPosition;
        mMetrics->underlineSize = (double)oMetrics.otmsUnderscoreSize;
        mMetrics->underlineOffset = (double)oMetrics.otmsUnderscorePosition;

        const MAT2 kIdentityMatrix = { {0, 1}, {0, 0}, {0, 0}, {0, 1} };
        GLYPHMETRICS gm;
        DWORD len = GetGlyphOutlineW(dc.GetDC(), PRUnichar('x'), GGO_METRICS, &gm, 0, nsnull, &kIdentityMatrix);
        if (len == GDI_ERROR || gm.gmptGlyphOrigin.y <= 0) {
            // 56% of ascent, best guess for true type
            mMetrics->xHeight =
                ROUND((double)metrics.tmAscent * DEFAULT_XHEIGHT_FACTOR);
        } else {
            mMetrics->xHeight = gm.gmptGlyphOrigin.y;
        }
        mMetrics->emHeight = metrics.tmHeight - metrics.tmInternalLeading;
        gfxFloat typEmHeight = (double)oMetrics.otmAscent - (double)oMetrics.otmDescent;
        mMetrics->emAscent = ROUND(mMetrics->emHeight * (double)oMetrics.otmAscent / typEmHeight);
        mMetrics->emDescent = mMetrics->emHeight - mMetrics->emAscent;
        if (oMetrics.otmEMSquare > 0) {
            mFUnitsConvFactor = float(mAdjustedSize / oMetrics.otmEMSquare);
        }
    } else {
        // Make a best-effort guess at extended metrics
        // this is based on general typographic guidelines
        
        // GetTextMetrics can fail if the font file has been removed
        // or corrupted recently.
        BOOL result = GetTextMetrics(dc.GetDC(), &metrics);
        if (!result) {
            NS_WARNING("Missing or corrupt font data, fasten your seatbelt");
            mIsValid = PR_FALSE;
            memset(mMetrics, 0, sizeof(*mMetrics));
            return;
        }

        mMetrics->xHeight =
            ROUND((float)metrics.tmAscent * DEFAULT_XHEIGHT_FACTOR);
        mMetrics->superscriptOffset = mMetrics->xHeight;
        mMetrics->subscriptOffset = mMetrics->xHeight;
        mMetrics->strikeoutSize = 1;
        mMetrics->strikeoutOffset = ROUND(mMetrics->xHeight * 0.5f); // 50% of xHeight
        mMetrics->underlineSize = 1;
        mMetrics->underlineOffset = -ROUND((float)metrics.tmDescent * 0.30f); // 30% of descent
        mMetrics->emHeight = metrics.tmHeight - metrics.tmInternalLeading;
        mMetrics->emAscent = metrics.tmAscent - metrics.tmInternalLeading;
        mMetrics->emDescent = metrics.tmDescent;
    }

    mMetrics->internalLeading = metrics.tmInternalLeading;
    mMetrics->externalLeading = metrics.tmExternalLeading;
    mMetrics->maxHeight = metrics.tmHeight;
//.........这里部分代码省略.........

nsresult
GetSpecialSystemDirectory(SystemDirectories aSystemSystemDirectory,
                          nsIFile** aFile)
{
#if defined(XP_WIN)
    WCHAR path[MAX_PATH];
#else
    char path[MAXPATHLEN];
#endif

    switch (aSystemSystemDirectory)
    {
        case OS_CurrentWorkingDirectory:
#if defined(XP_WIN)
            if (!_wgetcwd(path, MAX_PATH))
                return NS_ERROR_FAILURE;
            return NS_NewLocalFile(nsDependentString(path),
                                   true,
                                   aFile);
#else
            if(!getcwd(path, MAXPATHLEN))
                return NS_ERROR_FAILURE;
#endif

#if !defined(XP_WIN)
            return NS_NewNativeLocalFile(nsDependentCString(path),
                                         true,
                                         aFile);
#endif

        case OS_DriveDirectory:
#if defined (XP_WIN)
        {
            int32_t len = ::GetWindowsDirectoryW(path, MAX_PATH);
            if (len == 0)
                break;
            if (path[1] == PRUnichar(':') && path[2] == PRUnichar('\\'))
                path[3] = 0;

            return NS_NewLocalFile(nsDependentString(path),
                                   true,
                                   aFile);
        }
#else
        return NS_NewNativeLocalFile(nsDependentCString("/"),
                                     true,
                                     aFile);

#endif

        case OS_TemporaryDirectory:
#if defined (XP_WIN)
            {
            DWORD len = ::GetTempPathW(MAX_PATH, path);
            if (len == 0)
                break;
            return NS_NewLocalFile(nsDependentString(path, len),
                                   true,
                                   aFile);
        }
#elif defined(MOZ_WIDGET_COCOA)
        {
            return GetOSXFolderType(kUserDomain, kTemporaryFolderType, aFile);
        }

#elif defined(XP_UNIX)
        {
            static const char *tPath = nullptr;
            if (!tPath) {
                tPath = PR_GetEnv("PANDORATMP");
            if (!tPath) {
                tPath = PR_GetEnv("TMPDIR");
                if (!tPath || !*tPath) {
                    tPath = PR_GetEnv("TMP");
                    if (!tPath || !*tPath) {
                        tPath = PR_GetEnv("TEMP");
                        if (!tPath || !*tPath) {
                            tPath = "/tmp/";
                        }
                    }
                }
            }
            }
            return NS_NewNativeLocalFile(nsDependentCString(tPath),
                                         true,
                                         aFile);
        }
#else
        break;
#endif
#if defined (XP_WIN)
        case Win_SystemDirectory:
        {
            int32_t len = ::GetSystemDirectoryW(path, MAX_PATH);

            // Need enough space to add the trailing backslash
            if (!len || len > MAX_PATH - 2)
                break;
            path[len]   = L'\\';
            path[++len] = L'\0';
//.........这里部分代码省略.........

//.........这里部分代码省略.........
    NS_ABORT_IF_FALSE(GetUnit() == eCSSUnit_Calc ||
                      GetUnit() == eCSSUnit_Calc_Maximum ||
                      GetUnit() == eCSSUnit_Calc_Minimum,
                      "unexpected unit");
    CSSValueSerializeCalcOps ops(aProperty, aResult);
    css::SerializeCalc(*this, ops);
  }
  else if (eCSSUnit_Integer == unit) {
    nsAutoString tmpStr;
    tmpStr.AppendInt(GetIntValue(), 10);
    aResult.Append(tmpStr);
  }
  else if (eCSSUnit_Enumerated == unit) {
    if (eCSSProperty_text_decoration == aProperty) {
      PRInt32 intValue = GetIntValue();
      if (NS_STYLE_TEXT_DECORATION_NONE == intValue) {
        AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
                           aResult);
      } else {
        // Ignore the "override all" internal value.
        // (It doesn't have a string representation.)
        intValue &= ~NS_STYLE_TEXT_DECORATION_OVERRIDE_ALL;
        nsStyleUtil::AppendBitmaskCSSValue(
          aProperty, intValue,
          NS_STYLE_TEXT_DECORATION_UNDERLINE,
          NS_STYLE_TEXT_DECORATION_PREF_ANCHORS,
          aResult);
      }
    }
    else if (eCSSProperty_azimuth == aProperty) {
      PRInt32 intValue = GetIntValue();
      AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, (intValue & ~NS_STYLE_AZIMUTH_BEHIND)), aResult);
      if ((NS_STYLE_AZIMUTH_BEHIND & intValue) != 0) {
        aResult.Append(PRUnichar(' '));
        AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, NS_STYLE_AZIMUTH_BEHIND), aResult);
      }
    }
    else if (eCSSProperty_marks == aProperty) {
      PRInt32 intValue = GetIntValue();
      if (intValue == NS_STYLE_PAGE_MARKS_NONE) {
        AppendASCIItoUTF16(nsCSSProps::LookupPropertyValue(aProperty, intValue),
                           aResult);
      } else {
        nsStyleUtil::AppendBitmaskCSSValue(aProperty, intValue,
                                           NS_STYLE_PAGE_MARKS_CROP,
                                           NS_STYLE_PAGE_MARKS_REGISTER,
                                           aResult);
      }
    }
    else {
      const nsAFlatCString& name = nsCSSProps::LookupPropertyValue(aProperty, GetIntValue());
      AppendASCIItoUTF16(name, aResult);
    }
  }
  else if (eCSSUnit_EnumColor == unit) {
    // we can lookup the property in the ColorTable and then
    // get a string mapping the name
    nsCAutoString str;
    if (nsCSSProps::GetColorName(GetIntValue(), str)){
      AppendASCIItoUTF16(str, aResult);
    } else {
      NS_ABORT_IF_FALSE(false, "bad color value");
    }
  }
  else if (eCSSUnit_Color == unit) {
    nscolor color = GetColorValue();

PRUnichar
nsShiftJISToUnicode::GetCharacterForUnMapped()
{
  return PRUnichar(SJIS_UNMAPPED);
}

NS_IMETHODIMP
nsIndexedToHTML::OnIndexAvailable(nsIRequest *aRequest,
                                  nsISupports *aCtxt,
                                  nsIDirIndex *aIndex) {
    nsresult rv;
    if (!aIndex)
        return NS_ERROR_NULL_POINTER;

    nsString pushBuffer;
    pushBuffer.AppendLiteral("<tr");

    nsXPIDLString description;
    aIndex->GetDescription(getter_Copies(description));
    if (description.First() == PRUnichar('.'))
        pushBuffer.AppendLiteral(" class=\"hidden-object\"");

    pushBuffer.AppendLiteral(">\n <td sortable-data=\"");

    // The sort key is the name of the item, prepended by either 0, 1 or 2
    // in order to group items.
    PRUint32 type;
    aIndex->GetType(&type);
    switch (type) {
        case nsIDirIndex::TYPE_SYMLINK:
            pushBuffer.AppendInt(0);
            break;
        case nsIDirIndex::TYPE_DIRECTORY:
            pushBuffer.AppendInt(1);
            break;
        case nsIDirIndex::TYPE_FILE:
        case nsIDirIndex::TYPE_UNKNOWN:
            pushBuffer.AppendInt(2);
            break;
    }
    PRUnichar* escaped = nsEscapeHTML2(description.get(), description.Length());
    pushBuffer.Append(escaped);

    pushBuffer.AppendLiteral("\"><a class=\"");
    switch (type) {
        case nsIDirIndex::TYPE_DIRECTORY:
            pushBuffer.AppendLiteral("dir");
            break;
        case nsIDirIndex::TYPE_SYMLINK:
            pushBuffer.AppendLiteral("symlink");
            break;
        case nsIDirIndex::TYPE_FILE:
        case nsIDirIndex::TYPE_UNKNOWN:
            pushBuffer.AppendLiteral("file");
            break;
    }
    pushBuffer.AppendLiteral("\"");

    // Truncate long names to not stretch the table
    //XXX this should be left to the stylesheet (bug 391471)
    nsString escapedShort;
    if (description.Length() > 71) {
        nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest);
        nsCOMPtr<nsIURI> uri;
        rv = channel->GetURI(getter_AddRefs(uri));
        if (NS_FAILED(rv)) return rv;

        //XXX this potentially truncates after a combining char (bug 391472)
        nsXPIDLString descriptionAffix;
        descriptionAffix.Assign(description);
        descriptionAffix.Cut(0, descriptionAffix.Length() - 25);
        if (NS_IS_LOW_SURROGATE(descriptionAffix.First()))
            descriptionAffix.Cut(0, 1);
        description.Truncate(NS_MIN<PRUint32>(71, description.Length() - 28));
        if (NS_IS_HIGH_SURROGATE(description.Last()))
            description.Truncate(description.Length() - 1);

        escapedShort.Adopt(nsEscapeHTML2(description.get(), description.Length()));

        escapedShort.Append(mEscapedEllipsis);
        // add ZERO WIDTH SPACE (U+200B) for wrapping
        escapedShort.AppendLiteral("&#8203;");
        nsString tmp;
        tmp.Adopt(nsEscapeHTML2(descriptionAffix.get(), descriptionAffix.Length()));
        escapedShort.Append(tmp);

        pushBuffer.AppendLiteral(" title=\"");
        pushBuffer.Append(escaped);
        pushBuffer.AppendLiteral("\"");
    }
    if (escapedShort.IsEmpty())
        escapedShort.Assign(escaped);
    nsMemory::Free(escaped);

    pushBuffer.AppendLiteral(" href=\"");
    nsXPIDLCString loc;
    aIndex->GetLocation(getter_Copies(loc));

    if (!mTextToSubURI) {
        mTextToSubURI = do_GetService(NS_ITEXTTOSUBURI_CONTRACTID, &rv);
        if (NS_FAILED(rv)) return rv;
    }

    nsXPIDLCString encoding;
    rv = mParser->GetEncoding(getter_Copies(encoding));
    if (NS_FAILED(rv)) return rv;
//.........这里部分代码省略.........

void nsCSSSelector::ToStringInternal(nsAString& aString,
                                     nsICSSStyleSheet* aSheet,
                                     PRBool aIsPseudoElem,
                                     PRIntn aNegatedIndex,
                                     const nsString& aIdPrefix) const
{
  nsAutoString temp;
  PRBool aIsNegated = PRBool(0 < aNegatedIndex);
  PRBool isPseudoElement = IsPseudoElement(mTag);

  // selectors are linked from right-to-left, so the next selector in the linked list
  // actually precedes this one in the resulting string
  if (mNext) {
    mNext->ToStringInternal(aString, aSheet, IsPseudoElement(mTag), 0,
                            aIdPrefix);
    if (!aIsNegated && !isPseudoElement) {
      // don't add a leading whitespace if we have a pseudo-element
      // or a negated simple selector
      aString.Append(PRUnichar(' '));
    }
  }
  if (1 < aNegatedIndex) {
    // the first mNegations does not contain a negated type element selector
    // or a negated universal selector
    NS_IF_NEGATED_START(aIsNegated, aString)
  }

  // For non-pseudo-element selectors or for lone pseudo-elements, deal with
  // namespace prefixes.
  if (!isPseudoElement || !mNext) {
    // append the namespace prefix if needed
    if (mNameSpace == kNameSpaceID_None) {
      // The only way to do this in CSS is to have an explicit namespace
      // of "none" specified in the sheet by having a '|' with nothing
      // before it.
      aString.Append(PRUnichar('|'));
    } else {
#ifndef FBML
      if (aSheet) {
        nsXMLNameSpaceMap *sheetNS = aSheet->GetNameSpaceMap();
        // sheetNS is non-null if and only if we had an @namespace rule.  If it's
        // null, that means that the only namespaces we could have are the
        // wildcard namespace (which can be implicit in this case) and the "none"
        // namespace, which we handled above.  So no need to output anything when
        // sheetNS is null.
        if (sheetNS) {
          nsIAtom *prefixAtom = nsnull;
          // prefixAtom is non-null if and only if we have a prefix other than
          // '*'
          if (mNameSpace != kNameSpaceID_Unknown) {
            prefixAtom = sheetNS->FindPrefix(mNameSpace);
          }
          if (prefixAtom) {
            nsAutoString prefix;
            prefixAtom->ToString(prefix);
            aString.Append(prefix);
            aString.Append(PRUnichar('|'));
          } else if (mNameSpace == kNameSpaceID_Unknown) {
            // explicit *| or only non-default namespace rules and we're not
            // using any of those namespaces
            aString.AppendLiteral("*|");
          }
          // else we are in the default namespace and don't need to output
          // anything
        }
      }
#endif
    }
  }

  // smells like a universal selector
  if (!mTag && !mIDList && !mClassList) {
    if (1 != aNegatedIndex) {
      aString.Append(PRUnichar('*'));
    }
    if (1 < aNegatedIndex) {
      NS_IF_NEGATED_END(aIsNegated, aString)
    }
  } else {
    // Append the tag name, if there is one
    if (mTag) {

  order of preference: infix, postfix, prefix."

  The following variable will be used to keep track of all possible forms
  encountered in the Operator Dictionary.
*/
static OperatorData*   gOperatorFound[4];

static PRInt32         gTableRefCount = 0;
static PRInt32         gOperatorCount = 0;
static OperatorData*   gOperatorArray = nsnull;
static nsHashtable*    gOperatorTable = nsnull;
static PRBool          gInitialized   = PR_FALSE;
static nsTArray<OperatorData*>* gStretchyOperatorArray = nsnull;
static nsTArray<nsString>*      gInvariantCharArray    = nsnull;

static const PRUnichar kNullCh  = PRUnichar('\0');
static const PRUnichar kDashCh  = PRUnichar('#');
static const PRUnichar kEqualCh = PRUnichar('=');
static const PRUnichar kColonCh = PRUnichar(':');

static const char* const kMathVariant_name[] = {
  "normal",
  "bold",
  "italic",
  "bold-italic",
  "sans-serif",
  "bold-sans-serif",
  "sans-serif-italic",
  "sans-serif-bold-italic",
  "monospace",
  "script",

void nsCSSScanner::Unread()
{
  NS_PRECONDITION((mLastRead >= 0), "double pushback");
  Pushback(PRUnichar(mLastRead));
  mLastRead = -1;
}

void
nsAbAutoCompleteSession::AddToResult(const PRUnichar* pNickNameStr,
                                     const PRUnichar* pDisplayNameStr,
                                     const PRUnichar* pFirstNameStr,
                                     const PRUnichar* pLastNameStr,
                                     const PRUnichar* pEmailStr,
                                     const PRUnichar* pNotesStr,
                                     const PRUnichar* pDirName,
                                     PRUint32 aPopularityIndex,
                                     PRBool bIsMailList, PRBool pDefaultMatch,
                                     nsIAutoCompleteResults* results)
{
    nsresult rv;
    PRUnichar* fullAddrStr = nsnull;

    if (pDefaultMatch)
    {
        if (mDefaultDomain[0] == 0)
            return;

        nsAutoString aStr(pDisplayNameStr);
        if (aStr.FindChar('@') == kNotFound)
        {
            aStr.Append(PRUnichar('@'));
            aStr += mDefaultDomain;
        }
        fullAddrStr = ToNewUnicode(aStr);
    }
    else
    {
        if (mParser)
        {
            nsXPIDLCString fullAddress;
            nsXPIDLCString utf8Email;
            if (bIsMailList)
            {
                if (pNotesStr && pNotesStr[0] != 0)
                    utf8Email.Adopt(ToNewUTF8String(nsDependentString(pNotesStr)));
                else
                    utf8Email.Adopt(ToNewUTF8String(nsDependentString(pDisplayNameStr)));
            }
            else
                utf8Email.Adopt(ToNewUTF8String(nsDependentString(pEmailStr)));

            mParser->MakeFullAddress(nsnull, NS_ConvertUCS2toUTF8(pDisplayNameStr).get(),
                                     utf8Email, getter_Copies(fullAddress));
            if (!fullAddress.IsEmpty())
            {
                /* We need to convert back the result from UTF-8 to Unicode */
                fullAddrStr = nsCRT::strdup(NS_ConvertUTF8toUCS2(fullAddress.get()).get());
            }
        }

        if (!fullAddrStr)
        {
            //oops, parser problem! I will try to do my best...
            const PRUnichar * pStr = nsnull;
            if (bIsMailList)
            {
                if (pNotesStr && pNotesStr[0] != 0)
                    pStr = pNotesStr;
                else
                    pStr = pDisplayNameStr;
            }
            else
                pStr = pEmailStr;
            // check this so we do not get a bogus entry "someName <>"
            if (pStr && pStr[0] != 0) {
                nsAutoString aStr(pDisplayNameStr);
                aStr.AppendLiteral(" <");
                aStr += pStr;
                aStr.AppendLiteral(">");
                fullAddrStr = ToNewUnicode(aStr);
            }
            else
                fullAddrStr = nsnull;
        }
    }

    if (fullAddrStr && ! ItsADuplicate(fullAddrStr, aPopularityIndex, results))
    {
        nsCOMPtr<nsIAutoCompleteItem> newItem = do_CreateInstance(NS_AUTOCOMPLETEITEM_CONTRACTID, &rv);
        if (NS_SUCCEEDED(rv))
        {
            nsAbAutoCompleteParam *param = new nsAbAutoCompleteParam(pNickNameStr, pDisplayNameStr, pFirstNameStr, pLastNameStr, pEmailStr, pNotesStr, pDirName, aPopularityIndex, bIsMailList);
            NS_IF_ADDREF(param);
            newItem->SetParam(param);
            NS_IF_RELEASE(param);

            // how to process the comment column, if at all.  this value
            // comes from "mail.autoComplete.commentColumn", or, if that
            // doesn't exist, defaults to 0
            //
            // 0 = none
            // 1 = name of addressbook this card came from
            // 2 = other per-addressbook format (currrently unused here)
            //
            if (mAutoCompleteCommentColumn == 1) {
                rv = newItem->SetComment(pDirName);
                if (NS_FAILED(rv)) {
//.........这里部分代码省略.........

/** 
 * Returns a list of nsILocalHandlerApp objects containing local 
 * handlers associated with this mimeinfo. Implemented per 
 * platform using information in this object to generate the
 * best list. Typically used for an "open with" style user 
 * option.
 * 
 * @return nsIArray of nsILocalHandlerApp
 */
NS_IMETHODIMP
nsMIMEInfoWin::GetPossibleLocalHandlers(nsIArray **_retval)
{
  nsresult rv;

  *_retval = nullptr;

  nsCOMPtr<nsIMutableArray> appList =
    do_CreateInstance("@mozilla.org/array;1");

  if (!appList)
    return NS_ERROR_FAILURE;

  nsTArray<nsString> trackList;

  nsAutoCString fileExt;
  GetPrimaryExtension(fileExt);

  nsCOMPtr<nsIWindowsRegKey> regKey =
    do_CreateInstance("@mozilla.org/windows-registry-key;1");
  if (!regKey) 
    return NS_ERROR_FAILURE; 
  nsCOMPtr<nsIWindowsRegKey> appKey =
    do_CreateInstance("@mozilla.org/windows-registry-key;1");
  if (!appKey) 
    return NS_ERROR_FAILURE; 

  nsAutoString workingRegistryPath;

  bool extKnown = false;
  if (fileExt.IsEmpty()) {
    extKnown = true;
    // Mime type discovery is possible in some cases, through 
    // HKEY_CLASSES_ROOT\MIME\Database\Content Type, however, a number
    // of file extensions related to mime type are simply not defined,
    // (application/rss+xml & application/atom+xml are good examples)
    // in which case we can only provide a generic list.
    nsAutoCString mimeType;
    GetMIMEType(mimeType);
    if (!mimeType.IsEmpty()) {
      workingRegistryPath.AppendLiteral("MIME\\Database\\Content Type\\");
      workingRegistryPath.Append(NS_ConvertASCIItoUTF16(mimeType));
            
      rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
                        workingRegistryPath,
                        nsIWindowsRegKey::ACCESS_QUERY_VALUE);
      if(NS_SUCCEEDED(rv)) {
        nsAutoString mimeFileExt;
        if (NS_SUCCEEDED(regKey->ReadStringValue(EmptyString(), mimeFileExt))) {
          CopyUTF16toUTF8(mimeFileExt, fileExt);
          extKnown = false;
        }
      }
    }
  }

  nsAutoString fileExtToUse;
  if (fileExt.First() != '.')
    fileExtToUse = PRUnichar('.');
  fileExtToUse.Append(NS_ConvertUTF8toUTF16(fileExt));

  // Note, the order in which these occur has an effect on the 
  // validity of the resulting display list.

  if (!extKnown) {
    // 1) Get the default handler if it exists
    workingRegistryPath = fileExtToUse;

    rv = regKey->Open(nsIWindowsRegKey::ROOT_KEY_CLASSES_ROOT,
                      workingRegistryPath,
                      nsIWindowsRegKey::ACCESS_QUERY_VALUE);
    if (NS_SUCCEEDED(rv)) {
      nsAutoString appProgId;
      if (NS_SUCCEEDED(regKey->ReadStringValue(EmptyString(), appProgId))) {
        // Bug 358297 - ignore the embedded internet explorer handler
        if (appProgId != NS_LITERAL_STRING("XPSViewer.Document")) {
          nsAutoString appFilesystemCommand;
          if (GetProgIDVerbCommandHandler(appProgId,
                                          appFilesystemCommand,
                                          false) &&
              !IsPathInList(appFilesystemCommand, trackList)) {
            ProcessPath(appList, trackList, appFilesystemCommand);
          }
        }
      }
      regKey->Close();
    }


    // 2) list HKEY_CLASSES_ROOT\.ext\OpenWithList
    
//.........这里部分代码省略.........