/**************************************************************************** ** ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). ** Contact: Nokia Corporation (qt-info@nokia.com) ** ** This file is part of the QtGui module of the Qt Toolkit. ** ** $QT_BEGIN_LICENSE:LGPL$ ** No Commercial Usage ** This file contains pre-release code and may not be distributed. ** You may use this file in accordance with the terms and conditions ** contained in the Technology Preview License Agreement accompanying ** this package. ** ** GNU Lesser General Public License Usage ** Alternatively, this file may be used under the terms of the GNU Lesser ** General Public License version 2.1 as published by the Free Software ** Foundation and appearing in the file LICENSE.LGPL included in the ** packaging of this file. Please review the following information to ** ensure the GNU Lesser General Public License version 2.1 requirements ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. ** ** In addition, as a special exception, Nokia gives you certain ** additional rights. These rights are described in the Nokia Qt LGPL ** Exception version 1.1, included in the file LGPL_EXCEPTION.txt in this ** package. ** ** If you have questions regarding the use of this file, please contact ** Nokia at qt-info@nokia.com. ** ** ** ** ** ** ** ** ** $QT_END_LICENSE$ ** ****************************************************************************/ #include "qtexthtmlparser_p.h" #include #include #include #include #include #include #include "qtextdocument.h" #include "qtextformat_p.h" #include "qtextdocument_p.h" #include "qtextcursor.h" #include "qfont_p.h" #include "private/qunicodetables_p.h" #include "private/qfunctions_p.h" #ifndef QT_NO_TEXTHTMLPARSER QT_BEGIN_NAMESPACE // see also tst_qtextdocumentfragment.cpp #define MAX_ENTITY 258 static const struct QTextHtmlEntity { const char *name; quint16 code; } entities[MAX_ENTITY]= { { "AElig", 0x00c6 }, { "AMP", 38 }, { "Aacute", 0x00c1 }, { "Acirc", 0x00c2 }, { "Agrave", 0x00c0 }, { "Alpha", 0x0391 }, { "Aring", 0x00c5 }, { "Atilde", 0x00c3 }, { "Auml", 0x00c4 }, { "Beta", 0x0392 }, { "Ccedil", 0x00c7 }, { "Chi", 0x03a7 }, { "Dagger", 0x2021 }, { "Delta", 0x0394 }, { "ETH", 0x00d0 }, { "Eacute", 0x00c9 }, { "Ecirc", 0x00ca }, { "Egrave", 0x00c8 }, { "Epsilon", 0x0395 }, { "Eta", 0x0397 }, { "Euml", 0x00cb }, { "GT", 62 }, { "Gamma", 0x0393 }, { "Iacute", 0x00cd }, { "Icirc", 0x00ce }, { "Igrave", 0x00cc }, { "Iota", 0x0399 }, { "Iuml", 0x00cf }, { "Kappa", 0x039a }, { "LT", 60 }, { "Lambda", 0x039b }, { "Mu", 0x039c }, { "Ntilde", 0x00d1 }, { "Nu", 0x039d }, { "OElig", 0x0152 }, { "Oacute", 0x00d3 }, { "Ocirc", 0x00d4 }, { "Ograve", 0x00d2 }, { "Omega", 0x03a9 }, { "Omicron", 0x039f }, { "Oslash", 0x00d8 }, { "Otilde", 0x00d5 }, { "Ouml", 0x00d6 }, { "Phi", 0x03a6 }, { "Pi", 0x03a0 }, { "Prime", 0x2033 }, { "Psi", 0x03a8 }, { "QUOT", 34 }, { "Rho", 0x03a1 }, { "Scaron", 0x0160 }, { "Sigma", 0x03a3 }, { "THORN", 0x00de }, { "Tau", 0x03a4 }, { "Theta", 0x0398 }, { "Uacute", 0x00da }, { "Ucirc", 0x00db }, { "Ugrave", 0x00d9 }, { "Upsilon", 0x03a5 }, { "Uuml", 0x00dc }, { "Xi", 0x039e }, { "Yacute", 0x00dd }, { "Yuml", 0x0178 }, { "Zeta", 0x0396 }, { "aacute", 0x00e1 }, { "acirc", 0x00e2 }, { "acute", 0x00b4 }, { "aelig", 0x00e6 }, { "agrave", 0x00e0 }, { "alefsym", 0x2135 }, { "alpha", 0x03b1 }, { "amp", 38 }, { "and", 0x22a5 }, { "ang", 0x2220 }, { "apos", 0x0027 }, { "aring", 0x00e5 }, { "asymp", 0x2248 }, { "atilde", 0x00e3 }, { "auml", 0x00e4 }, { "bdquo", 0x201e }, { "beta", 0x03b2 }, { "brvbar", 0x00a6 }, { "bull", 0x2022 }, { "cap", 0x2229 }, { "ccedil", 0x00e7 }, { "cedil", 0x00b8 }, { "cent", 0x00a2 }, { "chi", 0x03c7 }, { "circ", 0x02c6 }, { "clubs", 0x2663 }, { "cong", 0x2245 }, { "copy", 0x00a9 }, { "crarr", 0x21b5 }, { "cup", 0x222a }, { "curren", 0x00a4 }, { "dArr", 0x21d3 }, { "dagger", 0x2020 }, { "darr", 0x2193 }, { "deg", 0x00b0 }, { "delta", 0x03b4 }, { "diams", 0x2666 }, { "divide", 0x00f7 }, { "eacute", 0x00e9 }, { "ecirc", 0x00ea }, { "egrave", 0x00e8 }, { "empty", 0x2205 }, { "emsp", 0x2003 }, { "ensp", 0x2002 }, { "epsilon", 0x03b5 }, { "equiv", 0x2261 }, { "eta", 0x03b7 }, { "eth", 0x00f0 }, { "euml", 0x00eb }, { "euro", 0x20ac }, { "exist", 0x2203 }, { "fnof", 0x0192 }, { "forall", 0x2200 }, { "frac12", 0x00bd }, { "frac14", 0x00bc }, { "frac34", 0x00be }, { "frasl", 0x2044 }, { "gamma", 0x03b3 }, { "ge", 0x2265 }, { "gt", 62 }, { "hArr", 0x21d4 }, { "harr", 0x2194 }, { "hearts", 0x2665 }, { "hellip", 0x2026 }, { "iacute", 0x00ed }, { "icirc", 0x00ee }, { "iexcl", 0x00a1 }, { "igrave", 0x00ec }, { "image", 0x2111 }, { "infin", 0x221e }, { "int", 0x222b }, { "iota", 0x03b9 }, { "iquest", 0x00bf }, { "isin", 0x2208 }, { "iuml", 0x00ef }, { "kappa", 0x03ba }, { "lArr", 0x21d0 }, { "lambda", 0x03bb }, { "lang", 0x2329 }, { "laquo", 0x00ab }, { "larr", 0x2190 }, { "lceil", 0x2308 }, { "ldquo", 0x201c }, { "le", 0x2264 }, { "lfloor", 0x230a }, { "lowast", 0x2217 }, { "loz", 0x25ca }, { "lrm", 0x200e }, { "lsaquo", 0x2039 }, { "lsquo", 0x2018 }, { "lt", 60 }, { "macr", 0x00af }, { "mdash", 0x2014 }, { "micro", 0x00b5 }, { "middot", 0x00b7 }, { "minus", 0x2212 }, { "mu", 0x03bc }, { "nabla", 0x2207 }, { "nbsp", 0x00a0 }, { "ndash", 0x2013 }, { "ne", 0x2260 }, { "ni", 0x220b }, { "not", 0x00ac }, { "notin", 0x2209 }, { "nsub", 0x2284 }, { "ntilde", 0x00f1 }, { "nu", 0x03bd }, { "oacute", 0x00f3 }, { "ocirc", 0x00f4 }, { "oelig", 0x0153 }, { "ograve", 0x00f2 }, { "oline", 0x203e }, { "omega", 0x03c9 }, { "omicron", 0x03bf }, { "oplus", 0x2295 }, { "or", 0x22a6 }, { "ordf", 0x00aa }, { "ordm", 0x00ba }, { "oslash", 0x00f8 }, { "otilde", 0x00f5 }, { "otimes", 0x2297 }, { "ouml", 0x00f6 }, { "para", 0x00b6 }, { "part", 0x2202 }, { "percnt", 0x0025 }, { "permil", 0x2030 }, { "perp", 0x22a5 }, { "phi", 0x03c6 }, { "pi", 0x03c0 }, { "piv", 0x03d6 }, { "plusmn", 0x00b1 }, { "pound", 0x00a3 }, { "prime", 0x2032 }, { "prod", 0x220f }, { "prop", 0x221d }, { "psi", 0x03c8 }, { "quot", 34 }, { "rArr", 0x21d2 }, { "radic", 0x221a }, { "rang", 0x232a }, { "raquo", 0x00bb }, { "rarr", 0x2192 }, { "rceil", 0x2309 }, { "rdquo", 0x201d }, { "real", 0x211c }, { "reg", 0x00ae }, { "rfloor", 0x230b }, { "rho", 0x03c1 }, { "rlm", 0x200f }, { "rsaquo", 0x203a }, { "rsquo", 0x2019 }, { "sbquo", 0x201a }, { "scaron", 0x0161 }, { "sdot", 0x22c5 }, { "sect", 0x00a7 }, { "shy", 0x00ad }, { "sigma", 0x03c3 }, { "sigmaf", 0x03c2 }, { "sim", 0x223c }, { "spades", 0x2660 }, { "sub", 0x2282 }, { "sube", 0x2286 }, { "sum", 0x2211 }, { "sup", 0x2283 }, { "sup1", 0x00b9 }, { "sup2", 0x00b2 }, { "sup3", 0x00b3 }, { "supe", 0x2287 }, { "szlig", 0x00df }, { "tau", 0x03c4 }, { "there4", 0x2234 }, { "theta", 0x03b8 }, { "thetasym", 0x03d1 }, { "thinsp", 0x2009 }, { "thorn", 0x00fe }, { "tilde", 0x02dc }, { "times", 0x00d7 }, { "trade", 0x2122 }, { "uArr", 0x21d1 }, { "uacute", 0x00fa }, { "uarr", 0x2191 }, { "ucirc", 0x00fb }, { "ugrave", 0x00f9 }, { "uml", 0x00a8 }, { "upsih", 0x03d2 }, { "upsilon", 0x03c5 }, { "uuml", 0x00fc }, { "weierp", 0x2118 }, { "xi", 0x03be }, { "yacute", 0x00fd }, { "yen", 0x00a5 }, { "yuml", 0x00ff }, { "zeta", 0x03b6 }, { "zwj", 0x200d }, { "zwnj", 0x200c } }; Q_STATIC_GLOBAL_OPERATOR bool operator<(const QString &entityStr, const QTextHtmlEntity &entity) { return entityStr < QLatin1String(entity.name); } Q_STATIC_GLOBAL_OPERATOR bool operator<(const QTextHtmlEntity &entity, const QString &entityStr) { return QLatin1String(entity.name) < entityStr; } static QChar resolveEntity(const QString &entity) { const QTextHtmlEntity *start = &entities[0]; const QTextHtmlEntity *end = &entities[MAX_ENTITY]; const QTextHtmlEntity *e = qBinaryFind(start, end, entity); if (e == end) return QChar(); return e->code; } static const uint windowsLatin1ExtendedCharacters[0xA0 - 0x80] = { 0x20ac, // 0x80 0x0081, // 0x81 direct mapping 0x201a, // 0x82 0x0192, // 0x83 0x201e, // 0x84 0x2026, // 0x85 0x2020, // 0x86 0x2021, // 0x87 0x02C6, // 0x88 0x2030, // 0x89 0x0160, // 0x8A 0x2039, // 0x8B 0x0152, // 0x8C 0x008D, // 0x8D direct mapping 0x017D, // 0x8E 0x008F, // 0x8F directmapping 0x0090, // 0x90 directmapping 0x2018, // 0x91 0x2019, // 0x92 0x201C, // 0x93 0X201D, // 0x94 0x2022, // 0x95 0x2013, // 0x96 0x2014, // 0x97 0x02DC, // 0x98 0x2122, // 0x99 0x0161, // 0x9A 0x203A, // 0x9B 0x0153, // 0x9C 0x009D, // 0x9D direct mapping 0x017E, // 0x9E 0x0178 // 0x9F }; // the displayMode value is according to the what are blocks in the piecetable, not // what the w3c defines. static const QTextHtmlElement elements[Html_NumElements]= { { "a", Html_a, QTextHtmlElement::DisplayInline }, { "address", Html_address, QTextHtmlElement::DisplayInline }, { "b", Html_b, QTextHtmlElement::DisplayInline }, { "big", Html_big, QTextHtmlElement::DisplayInline }, { "blockquote", Html_blockquote, QTextHtmlElement::DisplayBlock }, { "body", Html_body, QTextHtmlElement::DisplayBlock }, { "br", Html_br, QTextHtmlElement::DisplayInline }, { "caption", Html_caption, QTextHtmlElement::DisplayBlock }, { "center", Html_center, QTextHtmlElement::DisplayBlock }, { "cite", Html_cite, QTextHtmlElement::DisplayInline }, { "code", Html_code, QTextHtmlElement::DisplayInline }, { "dd", Html_dd, QTextHtmlElement::DisplayBlock }, { "dfn", Html_dfn, QTextHtmlElement::DisplayInline }, { "div", Html_div, QTextHtmlElement::DisplayBlock }, { "dl", Html_dl, QTextHtmlElement::DisplayBlock }, { "dt", Html_dt, QTextHtmlElement::DisplayBlock }, { "em", Html_em, QTextHtmlElement::DisplayInline }, { "font", Html_font, QTextHtmlElement::DisplayInline }, { "h1", Html_h1, QTextHtmlElement::DisplayBlock }, { "h2", Html_h2, QTextHtmlElement::DisplayBlock }, { "h3", Html_h3, QTextHtmlElement::DisplayBlock }, { "h4", Html_h4, QTextHtmlElement::DisplayBlock }, { "h5", Html_h5, QTextHtmlElement::DisplayBlock }, { "h6", Html_h6, QTextHtmlElement::DisplayBlock }, { "head", Html_head, QTextHtmlElement::DisplayNone }, { "hr", Html_hr, QTextHtmlElement::DisplayBlock }, { "html", Html_html, QTextHtmlElement::DisplayInline }, { "i", Html_i, QTextHtmlElement::DisplayInline }, { "img", Html_img, QTextHtmlElement::DisplayInline }, { "kbd", Html_kbd, QTextHtmlElement::DisplayInline }, { "li", Html_li, QTextHtmlElement::DisplayBlock }, { "link", Html_link, QTextHtmlElement::DisplayNone }, { "meta", Html_meta, QTextHtmlElement::DisplayNone }, { "nobr", Html_nobr, QTextHtmlElement::DisplayInline }, { "ol", Html_ol, QTextHtmlElement::DisplayBlock }, { "p", Html_p, QTextHtmlElement::DisplayBlock }, { "pre", Html_pre, QTextHtmlElement::DisplayBlock }, { "qt", Html_body /*deliberate mapping*/, QTextHtmlElement::DisplayBlock }, { "s", Html_s, QTextHtmlElement::DisplayInline }, { "samp", Html_samp, QTextHtmlElement::DisplayInline }, { "script", Html_script, QTextHtmlElement::DisplayNone }, { "small", Html_small, QTextHtmlElement::DisplayInline }, { "span", Html_span, QTextHtmlElement::DisplayInline }, { "strong", Html_strong, QTextHtmlElement::DisplayInline }, { "style", Html_style, QTextHtmlElement::DisplayNone }, { "sub", Html_sub, QTextHtmlElement::DisplayInline }, { "sup", Html_sup, QTextHtmlElement::DisplayInline }, { "table", Html_table, QTextHtmlElement::DisplayTable }, { "tbody", Html_tbody, QTextHtmlElement::DisplayTable }, { "td", Html_td, QTextHtmlElement::DisplayBlock }, { "tfoot", Html_tfoot, QTextHtmlElement::DisplayTable }, { "th", Html_th, QTextHtmlElement::DisplayBlock }, { "thead", Html_thead, QTextHtmlElement::DisplayTable }, { "title", Html_title, QTextHtmlElement::DisplayNone }, { "tr", Html_tr, QTextHtmlElement::DisplayTable }, { "tt", Html_tt, QTextHtmlElement::DisplayInline }, { "u", Html_u, QTextHtmlElement::DisplayInline }, { "ul", Html_ul, QTextHtmlElement::DisplayBlock }, { "var", Html_var, QTextHtmlElement::DisplayInline }, }; Q_STATIC_GLOBAL_OPERATOR bool operator<(const QString &str, const QTextHtmlElement &e) { return str < QLatin1String(e.name); } Q_STATIC_GLOBAL_OPERATOR bool operator<(const QTextHtmlElement &e, const QString &str) { return QLatin1String(e.name) < str; } static const QTextHtmlElement *lookupElementHelper(const QString &element) { const QTextHtmlElement *start = &elements[0]; const QTextHtmlElement *end = &elements[Html_NumElements]; const QTextHtmlElement *e = qBinaryFind(start, end, element); if (e == end) return 0; return e; } int QTextHtmlParser::lookupElement(const QString &element) { const QTextHtmlElement *e = lookupElementHelper(element); if (!e) return -1; return e->id; } // quotes newlines as "\\n" static QString quoteNewline(const QString &s) { QString n = s; n.replace(QLatin1Char('\n'), QLatin1String("\\n")); return n; } QTextHtmlParserNode::QTextHtmlParserNode() : parent(0), id(Html_unknown), cssFloat(QTextFrameFormat::InFlow), hasOwnListStyle(false), hasCssListIndent(false), isEmptyParagraph(false), isTextFrame(false), isRootFrame(false), displayMode(QTextHtmlElement::DisplayInline), hasHref(false), listStyle(QTextListFormat::ListStyleUndefined), imageWidth(-1), imageHeight(-1), tableBorder(0), tableCellRowSpan(1), tableCellColSpan(1), tableCellSpacing(2), tableCellPadding(0), borderBrush(Qt::darkGray), borderStyle(QTextFrameFormat::BorderStyle_Outset), userState(-1), cssListIndent(0), wsm(WhiteSpaceModeUndefined) { margin[QTextHtmlParser::MarginLeft] = 0; margin[QTextHtmlParser::MarginRight] = 0; margin[QTextHtmlParser::MarginTop] = 0; margin[QTextHtmlParser::MarginBottom] = 0; } void QTextHtmlParser::dumpHtml() { for (int i = 0; i < count(); ++i) { qDebug().nospace() << qPrintable(QString(depth(i)*4, QLatin1Char(' '))) << qPrintable(at(i).tag) << ":" << quoteNewline(at(i).text); ; } } QTextHtmlParserNode *QTextHtmlParser::newNode(int parent) { QTextHtmlParserNode *lastNode = &nodes.last(); QTextHtmlParserNode *newNode = 0; bool reuseLastNode = true; if (nodes.count() == 1) { reuseLastNode = false; } else if (lastNode->tag.isEmpty()) { if (lastNode->text.isEmpty()) { reuseLastNode = true; } else { // last node is a text node (empty tag) with some text if (lastNode->text.length() == 1 && lastNode->text.at(0).isSpace()) { int lastSibling = count() - 2; while (lastSibling && at(lastSibling).parent != lastNode->parent && at(lastSibling).displayMode == QTextHtmlElement::DisplayInline) { lastSibling = at(lastSibling).parent; } if (at(lastSibling).displayMode == QTextHtmlElement::DisplayInline) { reuseLastNode = false; } else { reuseLastNode = true; } } else { // text node with real (non-whitespace) text -> nothing to re-use reuseLastNode = false; } } } else { // last node had a proper tag -> nothing to re-use reuseLastNode = false; } if (reuseLastNode) { newNode = lastNode; newNode->tag.clear(); newNode->text.clear(); newNode->id = Html_unknown; } else { nodes.resize(nodes.size() + 1); newNode = &nodes.last(); } newNode->parent = parent; return newNode; } void QTextHtmlParser::parse(const QString &text, const QTextDocument *_resourceProvider) { nodes.clear(); nodes.resize(1); txt = text; pos = 0; len = txt.length(); textEditMode = false; resourceProvider = _resourceProvider; parse(); //dumpHtml(); } int QTextHtmlParser::depth(int i) const { int depth = 0; while (i) { i = at(i).parent; ++depth; } return depth; } int QTextHtmlParser::margin(int i, int mar) const { int m = 0; const QTextHtmlParserNode *node; if (mar == MarginLeft || mar == MarginRight) { while (i) { node = &at(i); if (!node->isBlock() && node->id != Html_table) break; if (node->isTableCell()) break; m += node->margin[mar]; i = node->parent; } } return m; } int QTextHtmlParser::topMargin(int i) const { if (!i) return 0; return at(i).margin[MarginTop]; } int QTextHtmlParser::bottomMargin(int i) const { if (!i) return 0; return at(i).margin[MarginBottom]; } void QTextHtmlParser::eatSpace() { while (pos < len && txt.at(pos).isSpace() && txt.at(pos) != QChar::ParagraphSeparator) pos++; } void QTextHtmlParser::parse() { while (pos < len) { QChar c = txt.at(pos++); if (c == QLatin1Char('<')) { parseTag(); } else if (c == QLatin1Char('&')) { nodes.last().text += parseEntity(); } else { nodes.last().text += c; } } } // parses a tag after "<" void QTextHtmlParser::parseTag() { eatSpace(); // handle comments and other exclamation mark declarations if (hasPrefix(QLatin1Char('!'))) { parseExclamationTag(); if (nodes.last().wsm != QTextHtmlParserNode::WhiteSpacePre && nodes.last().wsm != QTextHtmlParserNode::WhiteSpacePreWrap && !textEditMode) eatSpace(); return; } // if close tag just close if (hasPrefix(QLatin1Char('/'))) { if (nodes.last().id == Html_style) { #ifndef QT_NO_CSSPARSER QCss::Parser parser(nodes.last().text); QCss::StyleSheet sheet; sheet.origin = QCss::StyleSheetOrigin_Author; parser.parse(&sheet, Qt::CaseInsensitive); inlineStyleSheets.append(sheet); resolveStyleSheetImports(sheet); #endif } parseCloseTag(); return; } int p = last(); while (p && at(p).tag.size() == 0) p = at(p).parent; QTextHtmlParserNode *node = newNode(p); // parse tag name node->tag = parseWord().toLower(); const QTextHtmlElement *elem = lookupElementHelper(node->tag); if (elem) { node->id = elem->id; node->displayMode = elem->displayMode; } else { node->id = Html_unknown; } node->attributes.clear(); // _need_ at least one space after the tag name, otherwise there can't be attributes if (pos < len && txt.at(pos).isSpace()) node->attributes = parseAttributes(); // resolveParent() may have to change the order in the tree and // insert intermediate nodes for buggy HTML, so re-initialize the 'node' // pointer through the return value node = resolveParent(); resolveNode(); const int nodeIndex = nodes.count() - 1; // this new node is always the last #ifndef QT_NO_CSSPARSER node->applyCssDeclarations(declarationsForNode(nodeIndex), resourceProvider); #endif applyAttributes(node->attributes); // finish tag bool tagClosed = false; while (pos < len && txt.at(pos) != QLatin1Char('>')) { if (txt.at(pos) == QLatin1Char('/')) tagClosed = true; pos++; } pos++; // in a white-space preserving environment strip off a initial newline // since the element itself already generates a newline if ((node->wsm == QTextHtmlParserNode::WhiteSpacePre || node->wsm == QTextHtmlParserNode::WhiteSpacePreWrap) && node->isBlock()) { if (pos < len - 1 && txt.at(pos) == QLatin1Char('\n')) ++pos; } if (node->mayNotHaveChildren() || tagClosed) { newNode(node->parent); resolveNode(); } } // parses a tag beginning with "/" void QTextHtmlParser::parseCloseTag() { ++pos; QString tag = parseWord().toLower().trimmed(); while (pos < len) { QChar c = txt.at(pos++); if (c == QLatin1Char('>')) break; } // find corresponding open node int p = last(); if (p > 0 && at(p - 1).tag == tag && at(p - 1).mayNotHaveChildren()) p--; while (p && at(p).tag != tag) p = at(p).parent; // simply ignore the tag if we can't find // a corresponding open node, for broken // html such as blah if (!p) return; // in a white-space preserving environment strip off a trailing newline // since the closing of the opening block element will automatically result // in a new block for elements following the
    // ...foo\n

blah -> foo

blah if ((at(p).wsm == QTextHtmlParserNode::WhiteSpacePre || at(p).wsm == QTextHtmlParserNode::WhiteSpacePreWrap) && at(p).isBlock()) { if (at(last()).text.endsWith(QLatin1Char('\n'))) nodes[last()].text.chop(1); } newNode(at(p).parent); resolveNode(); } // parses a tag beginning with "!" void QTextHtmlParser::parseExclamationTag() { ++pos; if (hasPrefix(QLatin1Char('-'),1) && hasPrefix(QLatin1Char('-'),2)) { pos += 3; // eat comments int end = txt.indexOf(QLatin1String("-->"), pos); pos = (end >= 0 ? end + 3 : len); } else { // eat internal tags while (pos < len) { QChar c = txt.at(pos++); if (c == QLatin1Char('>')) break; } } } // parses an entity after "&", and returns it QString QTextHtmlParser::parseEntity() { int recover = pos; QString entity; while (pos < len) { QChar c = txt.at(pos++); if (c.isSpace() || pos - recover > 9) { goto error; } if (c == QLatin1Char(';')) break; entity += c; } { QChar resolved = resolveEntity(entity); if (!resolved.isNull()) return QString(resolved); } if (entity.length() > 1 && entity.at(0) == QLatin1Char('#')) { entity.remove(0, 1); // removing leading # int base = 10; bool ok = false; if (entity.at(0).toLower() == QLatin1Char('x')) { // hex entity? entity.remove(0, 1); base = 16; } uint uc = entity.toUInt(&ok, base); if (ok) { if (uc >= 0x80 && uc < 0x80 + (sizeof(windowsLatin1ExtendedCharacters)/sizeof(windowsLatin1ExtendedCharacters[0]))) uc = windowsLatin1ExtendedCharacters[uc - 0x80]; QString str; if (uc > 0xffff) { // surrogate pair uc -= 0x10000; ushort high = uc/0x400 + 0xd800; ushort low = uc%0x400 + 0xdc00; str.append(QChar(high)); str.append(QChar(low)); } else { str.append(QChar(uc)); } return str; } } error: pos = recover; return QLatin1String("&"); } // parses one word, possibly quoted, and returns it QString QTextHtmlParser::parseWord() { QString word; if (hasPrefix(QLatin1Char('\"'))) { // double quotes ++pos; while (pos < len) { QChar c = txt.at(pos++); if (c == QLatin1Char('\"')) break; else if (c == QLatin1Char('&')) word += parseEntity(); else word += c; } } else if (hasPrefix(QLatin1Char('\''))) { // single quotes ++pos; while (pos < len) { QChar c = txt.at(pos++); if (c == QLatin1Char('\'')) break; else word += c; } } else { // normal text while (pos < len) { QChar c = txt.at(pos++); if (c == QLatin1Char('>') || (c == QLatin1Char('/') && hasPrefix(QLatin1Char('>'), 1)) || c == QLatin1Char('<') || c == QLatin1Char('=') || c.isSpace()) { --pos; break; } if (c == QLatin1Char('&')) word += parseEntity(); else word += c; } } return word; } // gives the new node the right parent QTextHtmlParserNode *QTextHtmlParser::resolveParent() { QTextHtmlParserNode *node = &nodes.last(); int p = node->parent; // Excel gives us buggy HTML with just tr without surrounding table tags // or with just td tags if (node->id == Html_td) { int n = p; while (n && at(n).id != Html_tr) n = at(n).parent; if (!n) { nodes.insert(nodes.count() - 1, QTextHtmlParserNode()); nodes.insert(nodes.count() - 1, QTextHtmlParserNode()); QTextHtmlParserNode *table = &nodes[nodes.count() - 3]; table->parent = p; table->id = Html_table; table->tag = QLatin1String("table"); table->children.append(nodes.count() - 2); // add row as child QTextHtmlParserNode *row = &nodes[nodes.count() - 2]; row->parent = nodes.count() - 3; // table as parent row->id = Html_tr; row->tag = QLatin1String("tr"); p = nodes.count() - 2; node = &nodes.last(); // re-initialize pointer } } if (node->id == Html_tr) { int n = p; while (n && at(n).id != Html_table) n = at(n).parent; if (!n) { nodes.insert(nodes.count() - 1, QTextHtmlParserNode()); QTextHtmlParserNode *table = &nodes[nodes.count() - 2]; table->parent = p; table->id = Html_table; table->tag = QLatin1String("table"); p = nodes.count() - 2; node = &nodes.last(); // re-initialize pointer } } // permit invalid html by letting block elements be children // of inline elements with the exception of paragraphs: // // a new paragraph closes parent inline elements (while loop), // unless they themselves are children of a non-paragraph block // element (if statement) // // For example: // //

Foo

Bar <-- second

implicitly closes that // belongs to the first

. The self-nesting // check further down prevents the second

// from nesting into the first one then. // so Bar is not bold. // //

Foo <-- Foo should be bold. // //

Foo

Bar <-- Foo and Bar should be bold. // if (node->id == Html_p) { while (p && !at(p).isBlock()) p = at(p).parent; if (!p || at(p).id != Html_p) p = node->parent; } // some elements are not self nesting if (node->id == at(p).id && node->isNotSelfNesting()) p = at(p).parent; // some elements are not allowed in certain contexts while ((p && !node->allowedInContext(at(p).id)) // ### make new styles aware of empty tags || at(p).mayNotHaveChildren() ) { p = at(p).parent; } node->parent = p; // makes it easier to traverse the tree, later nodes[p].children.append(nodes.count() - 1); return node; } // sets all properties on the new node void QTextHtmlParser::resolveNode() { QTextHtmlParserNode *node = &nodes.last(); const QTextHtmlParserNode *parent = &nodes.at(node->parent); node->initializeProperties(parent, this); } bool QTextHtmlParserNode::isNestedList(const QTextHtmlParser *parser) const { if (!isListStart()) return false; int p = parent; while (p) { if (parser->at(p).isListStart()) return true; p = parser->at(p).parent; } return false; } void QTextHtmlParserNode::initializeProperties(const QTextHtmlParserNode *parent, const QTextHtmlParser *parser) { // inherit properties from parent element charFormat = parent->charFormat; if (id == Html_html) blockFormat.setLayoutDirection(Qt::LeftToRight); // HTML default else if (parent->blockFormat.hasProperty(QTextFormat::LayoutDirection)) blockFormat.setLayoutDirection(parent->blockFormat.layoutDirection()); if (parent->displayMode == QTextHtmlElement::DisplayNone) displayMode = QTextHtmlElement::DisplayNone; if (parent->id != Html_table || id == Html_caption) { if (parent->blockFormat.hasProperty(QTextFormat::BlockAlignment)) blockFormat.setAlignment(parent->blockFormat.alignment()); else blockFormat.clearProperty(QTextFormat::BlockAlignment); } // we don't paint per-row background colors, yet. so as an // exception inherit the background color here // we also inherit the background between inline elements if ((parent->id != Html_tr || !isTableCell()) && (displayMode != QTextHtmlElement::DisplayInline || parent->displayMode != QTextHtmlElement::DisplayInline)) { charFormat.clearProperty(QTextFormat::BackgroundBrush); } listStyle = parent->listStyle; // makes no sense to inherit that property, a named anchor is a single point // in the document, which is set by the DocumentFragment charFormat.clearProperty(QTextFormat::AnchorName); wsm = parent->wsm; // initialize remaining properties margin[QTextHtmlParser::MarginLeft] = 0; margin[QTextHtmlParser::MarginRight] = 0; margin[QTextHtmlParser::MarginTop] = 0; margin[QTextHtmlParser::MarginBottom] = 0; cssFloat = QTextFrameFormat::InFlow; for (int i = 0; i < 4; ++i) padding[i] = -1; // set element specific attributes switch (id) { case Html_a: charFormat.setAnchor(true); for (int i = 0; i < attributes.count(); i += 2) { const QString key = attributes.at(i); if (key.compare(QLatin1String("href"), Qt::CaseInsensitive) == 0 && !attributes.at(i + 1).isEmpty()) { hasHref = true; charFormat.setUnderlineStyle(QTextCharFormat::SingleUnderline); charFormat.setForeground(QApplication::palette().link()); } } break; case Html_em: case Html_i: case Html_cite: case Html_address: case Html_var: case Html_dfn: charFormat.setFontItalic(true); break; case Html_big: charFormat.setProperty(QTextFormat::FontSizeAdjustment, int(1)); break; case Html_small: charFormat.setProperty(QTextFormat::FontSizeAdjustment, int(-1)); break; case Html_strong: case Html_b: charFormat.setFontWeight(QFont::Bold); break; case Html_h1: charFormat.setFontWeight(QFont::Bold); charFormat.setProperty(QTextFormat::FontSizeAdjustment, int(3)); margin[QTextHtmlParser::MarginTop] = 18; margin[QTextHtmlParser::MarginBottom] = 12; break; case Html_h2: charFormat.setFontWeight(QFont::Bold); charFormat.setProperty(QTextFormat::FontSizeAdjustment, int(2)); margin[QTextHtmlParser::MarginTop] = 16; margin[QTextHtmlParser::MarginBottom] = 12; break; case Html_h3: charFormat.setFontWeight(QFont::Bold); charFormat.setProperty(QTextFormat::FontSizeAdjustment, int(1)); margin[QTextHtmlParser::MarginTop] = 14; margin[QTextHtmlParser::MarginBottom] = 12; break; case Html_h4: charFormat.setFontWeight(QFont::Bold); charFormat.setProperty(QTextFormat::FontSizeAdjustment, int(0)); margin[QTextHtmlParser::MarginTop] = 12; margin[QTextHtmlParser::MarginBottom] = 12; break; case Html_h5: charFormat.setFontWeight(QFont::Bold); charFormat.setProperty(QTextFormat::FontSizeAdjustment, int(-1)); margin[QTextHtmlParser::MarginTop] = 12; margin[QTextHtmlParser::MarginBottom] = 4; break; case Html_p: margin[QTextHtmlParser::MarginTop] = 12; margin[QTextHtmlParser::MarginBottom] = 12; break; case Html_center: blockFormat.setAlignment(Qt::AlignCenter); break; case Html_ul: listStyle = QTextListFormat::ListDisc; // nested lists don't have margins, except for the toplevel one if (!isNestedList(parser)) { margin[QTextHtmlParser::MarginTop] = 12; margin[QTextHtmlParser::MarginBottom] = 12; } // no left margin as we use indenting instead break; case Html_ol: listStyle = QTextListFormat::ListDecimal; // nested lists don't have margins, except for the toplevel one if (!isNestedList(parser)) { margin[QTextHtmlParser::MarginTop] = 12; margin[QTextHtmlParser::MarginBottom] = 12; } // no left margin as we use indenting instead break; case Html_code: case Html_tt: case Html_kbd: case Html_samp: charFormat.setFontFamily(QString::fromLatin1("Courier New,courier")); // uses a fixed font, so set the property charFormat.setFontFixedPitch(true); break; case Html_br: text = QChar(QChar::LineSeparator); wsm = QTextHtmlParserNode::WhiteSpacePre; break; // ##### sub / sup case Html_pre: charFormat.setFontFamily(QString::fromLatin1("Courier New,courier")); wsm = WhiteSpacePre; margin[QTextHtmlParser::MarginTop] = 12; margin[QTextHtmlParser::MarginBottom] = 12; //

 uses a fixed font
            charFormat.setFontFixedPitch(true);
            break;
        case Html_blockquote:
            margin[QTextHtmlParser::MarginTop] = 12;
            margin[QTextHtmlParser::MarginBottom] = 12;
            margin[QTextHtmlParser::MarginLeft] = 40;
            margin[QTextHtmlParser::MarginRight] = 40;
            break;
        case Html_dl:
            margin[QTextHtmlParser::MarginTop] = 8;
            margin[QTextHtmlParser::MarginBottom] = 8;
            break;
        case Html_dd:
            margin[QTextHtmlParser::MarginLeft] = 30;
            break;
        case Html_u:
            charFormat.setUnderlineStyle(QTextCharFormat::SingleUnderline);
            break;
        case Html_s:
            charFormat.setFontStrikeOut(true);
            break;
        case Html_nobr:
            wsm = WhiteSpaceNoWrap;
            break;
        case Html_th:
            charFormat.setFontWeight(QFont::Bold);
            blockFormat.setAlignment(Qt::AlignCenter);
            break;
        case Html_td:
            blockFormat.setAlignment(Qt::AlignLeft);
            break;
        case Html_sub:
            charFormat.setVerticalAlignment(QTextCharFormat::AlignSubScript);
            break;
        case Html_sup:
            charFormat.setVerticalAlignment(QTextCharFormat::AlignSuperScript);
            break;
        default: break;
    }
}

#ifndef QT_NO_CSSPARSER
void QTextHtmlParserNode::setListStyle(const QVector &cssValues)
{
    for (int i = 0; i < cssValues.count(); ++i) {
        if (cssValues.at(i).type == QCss::Value::KnownIdentifier) {
            switch (static_cast(cssValues.at(i).variant.toInt())) {
                case QCss::Value_Disc: hasOwnListStyle = true; listStyle = QTextListFormat::ListDisc; break;
                case QCss::Value_Square: hasOwnListStyle = true; listStyle = QTextListFormat::ListSquare; break;
                case QCss::Value_Circle: hasOwnListStyle = true; listStyle = QTextListFormat::ListCircle; break;
                case QCss::Value_Decimal: hasOwnListStyle = true; listStyle = QTextListFormat::ListDecimal; break;
                case QCss::Value_LowerAlpha: hasOwnListStyle = true; listStyle = QTextListFormat::ListLowerAlpha; break;
                case QCss::Value_UpperAlpha: hasOwnListStyle = true; listStyle = QTextListFormat::ListUpperAlpha; break;
                default: break;
            }
        }
    }
    // allow individual list items to override the style
    if (id == Html_li && hasOwnListStyle)
        blockFormat.setProperty(QTextFormat::ListStyle, listStyle);
}

void QTextHtmlParserNode::applyCssDeclarations(const QVector &declarations, const QTextDocument *resourceProvider)
{
    QCss::ValueExtractor extractor(declarations);
    extractor.extractBox(margin, padding);

    for (int i = 0; i < declarations.count(); ++i) {
        const QCss::Declaration &decl = declarations.at(i);
        if (decl.d->values.isEmpty()) continue;

        QCss::KnownValue identifier = QCss::UnknownValue;
        if (decl.d->values.first().type == QCss::Value::KnownIdentifier)
            identifier = static_cast(decl.d->values.first().variant.toInt());

        switch (decl.d->propertyId) {
        case QCss::BorderColor: borderBrush = QBrush(decl.colorValue()); break;
        case QCss::BorderStyles:
            if (decl.styleValue() != QCss::BorderStyle_Unknown && decl.styleValue() != QCss::BorderStyle_Native)
                borderStyle = static_cast(decl.styleValue() - 1);
            break;
        case QCss::BorderWidth:
            tableBorder = extractor.lengthValue(decl);
            break;
        case QCss::Color: charFormat.setForeground(decl.colorValue()); break;
        case QCss::Float:
            cssFloat = QTextFrameFormat::InFlow;
            switch (identifier) {
            case QCss::Value_Left: cssFloat = QTextFrameFormat::FloatLeft; break;
            case QCss::Value_Right: cssFloat = QTextFrameFormat::FloatRight; break;
            default: break;
            }
            break;
        case QCss::QtBlockIndent:
            blockFormat.setIndent(decl.d->values.first().variant.toInt());
            break;
        case QCss::TextIndent: {
            qreal indent = 0;
            if (decl.realValue(&indent, "px"))
                blockFormat.setTextIndent(indent);
            break; }
        case QCss::QtListIndent:
            if (decl.intValue(&cssListIndent))
                hasCssListIndent = true;
            break;
        case QCss::QtParagraphType:
            if (decl.d->values.first().variant.toString().compare(QLatin1String("empty"), Qt::CaseInsensitive) == 0)
                isEmptyParagraph = true;
            break;
        case QCss::QtTableType:
            if (decl.d->values.first().variant.toString().compare(QLatin1String("frame"), Qt::CaseInsensitive) == 0)
                isTextFrame = true;
            else if (decl.d->values.first().variant.toString().compare(QLatin1String("root"), Qt::CaseInsensitive) == 0) {
                isTextFrame = true;
                isRootFrame = true;
            }
            break;
        case QCss::QtUserState:
            userState = decl.d->values.first().variant.toInt();
            break;
        case QCss::Whitespace:
            switch (identifier) {
            case QCss::Value_Normal: wsm = QTextHtmlParserNode::WhiteSpaceNormal; break;
            case QCss::Value_Pre: wsm = QTextHtmlParserNode::WhiteSpacePre; break;
            case QCss::Value_NoWrap: wsm = QTextHtmlParserNode::WhiteSpaceNoWrap; break;
            case QCss::Value_PreWrap: wsm = QTextHtmlParserNode::WhiteSpacePreWrap; break;
            default: break;
            }
            break;
        case QCss::VerticalAlignment:
            switch (identifier) {
            case QCss::Value_Sub: charFormat.setVerticalAlignment(QTextCharFormat::AlignSubScript); break;
            case QCss::Value_Super: charFormat.setVerticalAlignment(QTextCharFormat::AlignSuperScript); break;
            case QCss::Value_Middle: charFormat.setVerticalAlignment(QTextCharFormat::AlignMiddle); break;
            case QCss::Value_Top: charFormat.setVerticalAlignment(QTextCharFormat::AlignTop); break;
            case QCss::Value_Bottom: charFormat.setVerticalAlignment(QTextCharFormat::AlignBottom); break;
            default: charFormat.setVerticalAlignment(QTextCharFormat::AlignNormal); break;
            }
            break;
        case QCss::PageBreakBefore:
            switch (identifier) {
            case QCss::Value_Always: blockFormat.setPageBreakPolicy(blockFormat.pageBreakPolicy() | QTextFormat::PageBreak_AlwaysBefore); break;
            case QCss::Value_Auto: blockFormat.setPageBreakPolicy(blockFormat.pageBreakPolicy() & ~QTextFormat::PageBreak_AlwaysBefore); break;
            default: break;
            }
            break;
        case QCss::PageBreakAfter:
            switch (identifier) {
            case QCss::Value_Always: blockFormat.setPageBreakPolicy(blockFormat.pageBreakPolicy() | QTextFormat::PageBreak_AlwaysAfter); break;
            case QCss::Value_Auto: blockFormat.setPageBreakPolicy(blockFormat.pageBreakPolicy() & ~QTextFormat::PageBreak_AlwaysAfter); break;
            default: break;
            }
            break;
        case QCss::TextUnderlineStyle:
            switch (identifier) {
            case QCss::Value_None: charFormat.setUnderlineStyle(QTextCharFormat::NoUnderline); break;
            case QCss::Value_Solid: charFormat.setUnderlineStyle(QTextCharFormat::SingleUnderline); break;
            case QCss::Value_Dashed: charFormat.setUnderlineStyle(QTextCharFormat::DashUnderline); break;
            case QCss::Value_Dotted: charFormat.setUnderlineStyle(QTextCharFormat::DotLine); break;
            case QCss::Value_DotDash: charFormat.setUnderlineStyle(QTextCharFormat::DashDotLine); break;
            case QCss::Value_DotDotDash: charFormat.setUnderlineStyle(QTextCharFormat::DashDotDotLine); break;
            case QCss::Value_Wave: charFormat.setUnderlineStyle(QTextCharFormat::WaveUnderline); break;
            default: break;
            }
            break;
        case QCss::ListStyleType:
        case QCss::ListStyle:
            setListStyle(decl.d->values);
            break;
        default: break;
        }
    }

    QFont f;
    int adjustment = -255;
    extractor.extractFont(&f, &adjustment);
    if (f.resolve() & QFont::SizeResolved) {
        if (f.pointSize() > 0) {
            charFormat.setFontPointSize(f.pointSize());
        } else if (f.pixelSize() > 0) {
            charFormat.setProperty(QTextFormat::FontPixelSize, f.pixelSize());
        }
    }
    if (f.resolve() & QFont::StyleResolved)
        charFormat.setFontItalic(f.style() != QFont::StyleNormal);

    if (f.resolve() & QFont::WeightResolved)
        charFormat.setFontWeight(f.weight());

    if (f.resolve() & QFont::FamilyResolved)
        charFormat.setFontFamily(f.family());

    if (f.resolve() & QFont::UnderlineResolved)
        charFormat.setUnderlineStyle(f.underline() ? QTextCharFormat::SingleUnderline : QTextCharFormat::NoUnderline);

    if (f.resolve() & QFont::OverlineResolved)
        charFormat.setFontOverline(f.overline());

    if (f.resolve() & QFont::StrikeOutResolved)
        charFormat.setFontStrikeOut(f.strikeOut());

    if (f.resolve() & QFont::CapitalizationResolved)
        charFormat.setFontCapitalization(f.capitalization());

    if (adjustment >= -1)
        charFormat.setProperty(QTextFormat::FontSizeAdjustment, adjustment);

    {
        Qt::Alignment ignoredAlignment;
        QCss::Repeat ignoredRepeat;
        QString bgImage;
        QBrush bgBrush;
        QCss::Origin ignoredOrigin, ignoredClip;
        QCss::Attachment ignoredAttachment;
        extractor.extractBackground(&bgBrush, &bgImage, &ignoredRepeat, &ignoredAlignment,
                                    &ignoredOrigin, &ignoredAttachment, &ignoredClip);

        if (!bgImage.isEmpty() && resourceProvider) {
            applyBackgroundImage(bgImage, resourceProvider);
        } else if (bgBrush.style() != Qt::NoBrush) {
            charFormat.setBackground(bgBrush);
        }
    }
}

#endif // QT_NO_CSSPARSER

void QTextHtmlParserNode::applyBackgroundImage(const QString &url, const QTextDocument *resourceProvider)
{
    if (!url.isEmpty() && resourceProvider) {
        QVariant val = resourceProvider->resource(QTextDocument::ImageResource, url);

        if (qApp->thread() != QThread::currentThread()) {
            // must use images in non-GUI threads
            if (val.type() == QVariant::Image) {
                QImage image = qvariant_cast(val);
                charFormat.setBackground(image);
            } else if (val.type() == QVariant::ByteArray) {
                QImage image;
                if (image.loadFromData(val.toByteArray())) {
                    charFormat.setBackground(image);
                }
            }
        } else {
            if (val.type() == QVariant::Image || val.type() == QVariant::Pixmap) {
                charFormat.setBackground(qvariant_cast(val));
            } else if (val.type() == QVariant::ByteArray) {
                QPixmap pm;
                if (pm.loadFromData(val.toByteArray())) {
                    charFormat.setBackground(pm);
                }
            }
        }
    }
    if (!url.isEmpty())
        charFormat.setProperty(QTextFormat::BackgroundImageUrl, url);
}

bool QTextHtmlParserNode::hasOnlyWhitespace() const
{
    for (int i = 0; i < text.count(); ++i)
        if (!text.at(i).isSpace() || text.at(i) == QChar::LineSeparator)
            return false;
    return true;
}

static bool setIntAttribute(int *destination, const QString &value)
{
    bool ok = false;
    int val = value.toInt(&ok);
    if (ok)
        *destination = val;

    return ok;
}

static bool setFloatAttribute(qreal *destination, const QString &value)
{
    bool ok = false;
    qreal val = value.toDouble(&ok);
    if (ok)
        *destination = val;

    return ok;
}

static void setWidthAttribute(QTextLength *width, QString value)
{
    qreal realVal;
    bool ok = false;
    realVal = value.toDouble(&ok);
    if (ok) {
        *width = QTextLength(QTextLength::FixedLength, realVal);
    } else {
        value = value.trimmed();
        if (!value.isEmpty() && value.at(value.length() - 1) == QLatin1Char('%')) {
            value.chop(1);
            realVal = value.toDouble(&ok);
            if (ok)
                *width = QTextLength(QTextLength::PercentageLength, realVal);
        }
    }
}

#ifndef QT_NO_CSSPARSER
void QTextHtmlParserNode::parseStyleAttribute(const QString &value, const QTextDocument *resourceProvider)
{
    QString css = value;
    css.prepend(QLatin1String("* {"));
    css.append(QLatin1Char('}'));
    QCss::Parser parser(css);
    QCss::StyleSheet sheet;
    parser.parse(&sheet, Qt::CaseInsensitive);
    if (sheet.styleRules.count() != 1) return;
    applyCssDeclarations(sheet.styleRules.at(0).declarations, resourceProvider);
}
#endif

QStringList QTextHtmlParser::parseAttributes()
{
    QStringList attrs;

    while (pos < len) {
        eatSpace();
        if (hasPrefix(QLatin1Char('>')) || hasPrefix(QLatin1Char('/')))
            break;
        QString key = parseWord().toLower();
        QString value = QLatin1String("1");
        if (key.size() == 0)
            break;
        eatSpace();
        if (hasPrefix(QLatin1Char('='))){
            pos++;
            eatSpace();
            value = parseWord();
        }
        if (value.size() == 0)
            continue;
        attrs << key << value;
    }

    return attrs;
}

void QTextHtmlParser::applyAttributes(const QStringList &attributes)
{
    // local state variable for qt3 textedit mode
    bool seenQt3Richtext = false;
    QString linkHref;
    QString linkType;

    if (attributes.count() % 2 == 1)
        return;

    QTextHtmlParserNode *node = &nodes.last();

    for (int i = 0; i < attributes.count(); i += 2) {
        QString key = attributes.at(i);
        QString value = attributes.at(i + 1);

        switch (node->id) {
            case Html_font:
                // the infamous font tag
                if (key == QLatin1String("size") && value.size()) {
                    int n = value.toInt();
                    if (value.at(0) != QLatin1Char('+') && value.at(0) != QLatin1Char('-'))
                        n -= 3;
                    node->charFormat.setProperty(QTextFormat::FontSizeAdjustment, n);
                } else if (key == QLatin1String("face")) {
                    node->charFormat.setFontFamily(value);
                } else if (key == QLatin1String("color")) {
                    QColor c; c.setNamedColor(value);
                    if (!c.isValid())
                        qWarning("QTextHtmlParser::applyAttributes: Unknown color name '%s'",value.toLatin1().constData());
                    node->charFormat.setForeground(c);
                }
                break;
            case Html_ol:
            case Html_ul:
                if (key == QLatin1String("type")) {
                    node->hasOwnListStyle = true;
                    if (value == QLatin1String("1")) {
                        node->listStyle = QTextListFormat::ListDecimal;
                    } else if (value == QLatin1String("a")) {
                        node->listStyle = QTextListFormat::ListLowerAlpha;
                    } else if (value == QLatin1String("A")) {
                        node->listStyle = QTextListFormat::ListUpperAlpha;
                    } else {
                        value = value.toLower();
                        if (value == QLatin1String("square"))
                            node->listStyle = QTextListFormat::ListSquare;
                        else if (value == QLatin1String("disc"))
                            node->listStyle = QTextListFormat::ListDisc;
                        else if (value == QLatin1String("circle"))
                            node->listStyle = QTextListFormat::ListCircle;
                    }
                }
                break;
            case Html_a:
                if (key == QLatin1String("href"))
                    node->charFormat.setAnchorHref(value);
                else if (key == QLatin1String("name"))
                    node->charFormat.setAnchorName(value);
                break;
            case Html_img:
                if (key == QLatin1String("src") || key == QLatin1String("source")) {
                    node->imageName = value;
                } else if (key == QLatin1String("width")) {
                    node->imageWidth = -2; // register that there is a value for it.
                    setFloatAttribute(&node->imageWidth, value);
                } else if (key == QLatin1String("height")) {
                    node->imageHeight = -2; // register that there is a value for it.
                    setFloatAttribute(&node->imageHeight, value);
                }
                break;
            case Html_tr:
            case Html_body:
                if (key == QLatin1String("bgcolor")) {
                    QColor c; c.setNamedColor(value);
                    if (!c.isValid())
                        qWarning("QTextHtmlParser::applyAttributes: Unknown color name '%s'",value.toLatin1().constData());
                    node->charFormat.setBackground(c);
                } else if (key == QLatin1String("background")) {
                    node->applyBackgroundImage(value, resourceProvider);
                }
                break;
            case Html_th:
            case Html_td:
                if (key == QLatin1String("width")) {
                    setWidthAttribute(&node->width, value);
                } else if (key == QLatin1String("bgcolor")) {
                    QColor c; c.setNamedColor(value);
                    if (!c.isValid())
                        qWarning("QTextHtmlParser::applyAttributes: Unknown color name '%s'",value.toLatin1().constData());
                    node->charFormat.setBackground(c);
                } else if (key == QLatin1String("background")) {
                    node->applyBackgroundImage(value, resourceProvider);
                } else if (key == QLatin1String("rowspan")) {
                    if (setIntAttribute(&node->tableCellRowSpan, value))
                        node->tableCellRowSpan = qMax(1, node->tableCellRowSpan);
                } else if (key == QLatin1String("colspan")) {
                    if (setIntAttribute(&node->tableCellColSpan, value))
                        node->tableCellColSpan = qMax(1, node->tableCellColSpan);
                }
                break;
            case Html_table:
                if (key == QLatin1String("border")) {
                    setFloatAttribute(&node->tableBorder, value);
                } else if (key == QLatin1String("bgcolor")) {
                    QColor c; c.setNamedColor(value);
                    if (!c.isValid())
                        qWarning("QTextHtmlParser::applyAttributes: Unknown color name '%s'",value.toLatin1().constData());
                    node->charFormat.setBackground(c);
                } else if (key == QLatin1String("background")) {
                    node->applyBackgroundImage(value, resourceProvider);
                } else if (key == QLatin1String("cellspacing")) {
                    setFloatAttribute(&node->tableCellSpacing, value);
                } else if (key == QLatin1String("cellpadding")) {
                    setFloatAttribute(&node->tableCellPadding, value);
                } else if (key == QLatin1String("width")) {
                    setWidthAttribute(&node->width, value);
                } else if (key == QLatin1String("height")) {
                    setWidthAttribute(&node->height, value);
                }
                break;
            case Html_meta:
                if (key == QLatin1String("name")
                    && value == QLatin1String("qrichtext")) {
                    seenQt3Richtext = true;
                }

                if (key == QLatin1String("content")
                    && value == QLatin1String("1")
                    && seenQt3Richtext) {

                    textEditMode = true;
                }
                break;
            case Html_hr:
                if (key == QLatin1String("width"))
                    setWidthAttribute(&node->width, value);
                break;
            case Html_link:
                if (key == QLatin1String("href"))
                    linkHref = value;
                else if (key == QLatin1String("type"))
                    linkType = value;
                break;
            default:
                break;
        }

        if (key == QLatin1String("style")) {
#ifndef QT_NO_CSSPARSER
            node->parseStyleAttribute(value, resourceProvider);
#endif
        } else if (key == QLatin1String("align")) {
            value = value.toLower();
            bool alignmentSet = true;

            if (value == QLatin1String("left"))
                node->blockFormat.setAlignment(Qt::AlignLeft|Qt::AlignAbsolute);
            else if (value == QLatin1String("right"))
                node->blockFormat.setAlignment(Qt::AlignRight|Qt::AlignAbsolute);
            else if (value == QLatin1String("center"))
                node->blockFormat.setAlignment(Qt::AlignHCenter);
            else if (value == QLatin1String("justify"))
                node->blockFormat.setAlignment(Qt::AlignJustify);
            else
                alignmentSet = false;

            if (node->id == Html_img) {
                // HTML4 compat
                if (alignmentSet) {
                    if (node->blockFormat.alignment() & Qt::AlignLeft)
                        node->cssFloat = QTextFrameFormat::FloatLeft;
                    else if (node->blockFormat.alignment() & Qt::AlignRight)
                        node->cssFloat = QTextFrameFormat::FloatRight;
                } else if (value == QLatin1String("middle")) {
                    node->charFormat.setVerticalAlignment(QTextCharFormat::AlignMiddle);
                } else if (value == QLatin1String("top")) {
                    node->charFormat.setVerticalAlignment(QTextCharFormat::AlignTop);
                }
            }
        } else if (key == QLatin1String("valign")) {
            value = value.toLower();
            if (value == QLatin1String("top"))
                node->charFormat.setVerticalAlignment(QTextCharFormat::AlignTop);
            else if (value == QLatin1String("middle"))
                node->charFormat.setVerticalAlignment(QTextCharFormat::AlignMiddle);
            else if (value == QLatin1String("bottom"))
                node->charFormat.setVerticalAlignment(QTextCharFormat::AlignBottom);
        } else if (key == QLatin1String("dir")) {
            value = value.toLower();
            if (value == QLatin1String("ltr"))
                node->blockFormat.setLayoutDirection(Qt::LeftToRight);
            else if (value == QLatin1String("rtl"))
                node->blockFormat.setLayoutDirection(Qt::RightToLeft);
        } else if (key == QLatin1String("title")) {
            node->charFormat.setToolTip(value);
        } else if (key == QLatin1String("id")) {
            node->charFormat.setAnchor(true);
            node->charFormat.setAnchorName(value);
        }
    }

#ifndef QT_NO_CSSPARSER
    if (resourceProvider && !linkHref.isEmpty() && linkType == QLatin1String("text/css"))
        importStyleSheet(linkHref);
#endif
}

#ifndef QT_NO_CSSPARSER
class QTextHtmlStyleSelector : public QCss::StyleSelector
{
public:
    inline QTextHtmlStyleSelector(const QTextHtmlParser *parser)
        : parser(parser) { nameCaseSensitivity = Qt::CaseInsensitive; }

    virtual QStringList nodeNames(NodePtr node) const;
    virtual QString attribute(NodePtr node, const QString &name) const;
    virtual bool hasAttributes(NodePtr node) const;
    virtual bool isNullNode(NodePtr node) const;
    virtual NodePtr parentNode(NodePtr node) const;
    virtual NodePtr previousSiblingNode(NodePtr node) const;
    virtual NodePtr duplicateNode(NodePtr node) const;
    virtual void freeNode(NodePtr node) const;

private:
    const QTextHtmlParser *parser;
};

QStringList QTextHtmlStyleSelector::nodeNames(NodePtr node) const
{
    return QStringList(parser->at(node.id).tag.toLower());
}

#endif // QT_NO_CSSPARSER

static inline int findAttribute(const QStringList &attributes, const QString &name)
{
    int idx = -1;
    do {
        idx = attributes.indexOf(name, idx + 1);
    } while (idx != -1 && (idx % 2 == 1));
    return idx;
}

#ifndef QT_NO_CSSPARSER

QString QTextHtmlStyleSelector::attribute(NodePtr node, const QString &name) const
{
    const QStringList &attributes = parser->at(node.id).attributes;
    const int idx = findAttribute(attributes, name);
    if (idx == -1)
        return QString();
    return attributes.at(idx + 1);
}

bool QTextHtmlStyleSelector::hasAttributes(NodePtr node) const
{
   const QStringList &attributes = parser->at(node.id).attributes;
   return !attributes.isEmpty();
}

bool QTextHtmlStyleSelector::isNullNode(NodePtr node) const
{
    return node.id == 0;
}

QCss::StyleSelector::NodePtr QTextHtmlStyleSelector::parentNode(NodePtr node) const
{
    NodePtr parent;
    parent.id = 0;
    if (node.id) {
        parent.id = parser->at(node.id).parent;
    }
    return parent;
}

QCss::StyleSelector::NodePtr QTextHtmlStyleSelector::duplicateNode(NodePtr node) const
{
    return node;
}

QCss::StyleSelector::NodePtr QTextHtmlStyleSelector::previousSiblingNode(NodePtr node) const
{
    NodePtr sibling;
    sibling.id = 0;
    if (!node.id)
        return sibling;
    int parent = parser->at(node.id).parent;
    if (!parent)
        return sibling;
    const int childIdx = parser->at(parent).children.indexOf(node.id);
    if (childIdx <= 0)
        return sibling;
    sibling.id = parser->at(parent).children.at(childIdx - 1);
    return sibling;
}

void QTextHtmlStyleSelector::freeNode(NodePtr) const
{
}

void QTextHtmlParser::resolveStyleSheetImports(const QCss::StyleSheet &sheet)
{
    for (int i = 0; i < sheet.importRules.count(); ++i) {
        const QCss::ImportRule &rule = sheet.importRules.at(i);
        if (rule.media.isEmpty()
            || rule.media.contains(QLatin1String("screen"), Qt::CaseInsensitive))
            importStyleSheet(rule.href);
    }
}

void QTextHtmlParser::importStyleSheet(const QString &href)
{
    if (!resourceProvider)
        return;
    for (int i = 0; i < externalStyleSheets.count(); ++i)
        if (externalStyleSheets.at(i).url == href)
            return;

    QVariant res = resourceProvider->resource(QTextDocument::StyleSheetResource, href);
    QString css;
    if (res.type() == QVariant::String) {
        css = res.toString();
    } else if (res.type() == QVariant::ByteArray) {
        // #### detect @charset
        css = QString::fromUtf8(res.toByteArray());
    }
    if (!css.isEmpty()) {
        QCss::Parser parser(css);
        QCss::StyleSheet sheet;
        parser.parse(&sheet, Qt::CaseInsensitive);
        externalStyleSheets.append(ExternalStyleSheet(href, sheet));
        resolveStyleSheetImports(sheet);
    }
}

QVector QTextHtmlParser::declarationsForNode(int node) const
{
    QVector decls;

    QTextHtmlStyleSelector selector(this);

    int idx = 0;
    selector.styleSheets.resize((resourceProvider ? 1 : 0)
                                + externalStyleSheets.count()
                                + inlineStyleSheets.count());
    if (resourceProvider)
        selector.styleSheets[idx++] = resourceProvider->docHandle()->parsedDefaultStyleSheet;

    for (int i = 0; i < externalStyleSheets.count(); ++i, ++idx)
        selector.styleSheets[idx] = externalStyleSheets.at(i).sheet;

    for (int i = 0; i < inlineStyleSheets.count(); ++i, ++idx)
        selector.styleSheets[idx] = inlineStyleSheets.at(i);

    selector.medium = QLatin1String("screen");

    QCss::StyleSelector::NodePtr n;
    n.id = node;

    const char *extraPseudo = 0;
    if (nodes.at(node).id == Html_a && nodes.at(node).hasHref)
        extraPseudo = "link";
    decls = selector.declarationsForNode(n, extraPseudo);

    return decls;
}

bool QTextHtmlParser::nodeIsChildOf(int i, QTextHTMLElements id) const
{
    while (i) {
        if (at(i).id == id)
            return true;
        i = at(i).parent;
    }
    return false;
}

QT_END_NAMESPACE
#endif // QT_NO_CSSPARSER

#endif // QT_NO_TEXTHTMLPARSER