MailJDTourDownloadDocsQualityTestsCoverage

Which source lines and branches the tests execute. Lines 91.5 %, branches 75.0 % (minimum 85 % and 72 %). main @ 399ffe3d · 21 October 2026 · pipeline 7238.

GCC Code Coverage Report

Directory: src/
Coverage: low: ≥ 0% medium: ≥ 75.0% high: ≥ 90.0%
Coverage Exec / Excl / Total
Lines: 94.6% 370 / 0 / 391
Functions: 100.0% 31 / 0 / 31
Branches: 81.2% 648 / 0 / 798
data/MailHtmlWriter.cpp
Line Branch Exec Source
1 #include "MailHtmlWriter.h"
2
3 #include "ComposeDocumentFormat.h"
4
5 #include <QTextBlock>
6 #include <QTextCharFormat>
7 #include <QTextDocument>
8 #include <QTextFrame>
9 #include <QTextImageFormat>
10 #include <QTextList>
11 #include <QTextTable>
12 #include <QVector>
13
14 namespace {
15
16 using namespace ComposeDocumentFormat;
17
18 // A paragraph's attributes; consecutive plain blocks with equal attributes
19 // share one <p> (lines joined by <br>, an empty block ends the paragraph).
20 struct ParagraphStyle {
21 QString align; // "", "left", "right", "center", "justify"
22 bool rtl = false;
23 int indent = 0;
24 585 bool operator==(const ParagraphStyle &other) const {
25
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 585 return align == other.align && rtl == other.rtl && indent == other.indent;
26 }
27 };
28
29 4800 QString physicalAlignment(const QTextBlockFormat &format, bool rtl) {
30
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 4800 if (!format.hasProperty(QTextFormat::BlockAlignment)) return {};
31
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 17 const Qt::Alignment alignment = format.alignment();
32
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 17 if (alignment & Qt::AlignJustify) return QStringLiteral("justify");
33
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 26 if (alignment & Qt::AlignHCenter) return QStringLiteral("center");
34 8 const bool absolute = alignment & Qt::AlignAbsolute;
35
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 8 if (alignment & Qt::AlignRight)
36
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 24 return (absolute || !rtl) ? QStringLiteral("right") : QStringLiteral("left");
37 ✗ if (alignment & Qt::AlignLeft) {
38 // Logical start is the default: written only when it differs (absolute
39 // left in a right-to-left paragraph).
40 ✗ if (absolute && rtl) return QStringLiteral("left");
41 ✗ return {};
42 }
43 ✗ return {};
44 }
45
46 4800 ParagraphStyle paragraphStyle(const QTextBlock &block) {
47 4800 ParagraphStyle style;
48
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 4800 style.rtl = block.textDirection() == Qt::RightToLeft;
49
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 4800 style.align = physicalAlignment(block.blockFormat(), style.rtl);
50
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 4800 style.indent = qBound(0, block.blockFormat().indent(), 8);
51 4800 return style;
52 ✗ }
53
54 4218 QString blockAttributes(const ParagraphStyle &style, const QString &baseStyle) {
55 4218 QStringList declarations;
56
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 4218 if (!baseStyle.isEmpty()) declarations.append(baseStyle);
57
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 4235 if (!style.align.isEmpty()) declarations.append(QStringLiteral("text-align:") + style.align);
58
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 4218 if (style.indent > 0)
59 ✗ declarations.append((style.rtl ? QStringLiteral("margin-right:") : QStringLiteral("margin-left:")) +
60 ✗ QString::number(style.indent * 40) + QStringLiteral("px"));
61 4218 QString attributes;
62
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 4244 if (style.rtl) attributes += QStringLiteral(" dir=\"rtl\"");
63
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 7689 if (!declarations.isEmpty()) attributes += QStringLiteral(" style=\"") + declarations.join(QLatin1Char(';')) + QLatin1Char('"');
64 4218 return attributes;
65 4218 }
66
67 // `previousSpace` carries the space run across the fragments of one block.
68 11580 QString escapedText(const QString &text, bool &previousSpace) {
69 11580 QString out;
70
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 11580 out.reserve(text.size() + 16);
71
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 316541 for (const QChar c : text) {
72
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 304961 switch (c.unicode()) {
73
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 66 case '<': out += QStringLiteral("&lt;"); break;
74
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 78 case '>': out += QStringLiteral("&gt;"); break;
75
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 34 case '&': out += QStringLiteral("&amp;"); break;
76
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 8 case '"': out += QStringLiteral("&quot;"); break;
77 ✗ case 0x2028: out += QStringLiteral("<br>"); break; // Shift+Enter line break
78 ✗ case 0x00A0: out += QStringLiteral("&nbsp;"); break;
79
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 4 case '\t': out += QStringLiteral("&nbsp;&nbsp;&nbsp; "); break;
80 ✗ case 0xFFFC: break; // object without image format
81 71456 case ' ':
82 // Runs of spaces keep their width: every second one is non-breaking.
83
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 142912 out += previousSpace ? QStringLiteral("&nbsp;") : QStringLiteral(" ");
84 71456 previousSpace = !previousSpace;
85 71456 continue;
86 233410 default:
87
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 233410 if (c.unicode() < 0x20) break; // control characters never leave
88
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 233408 out += c;
89 }
90 233505 previousSpace = false;
91 }
92 11580 return out;
93 ✗ }
94
95 16 QString escapedText(const QString &text) {
96 16 bool previousSpace = false;
97
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 32 return escapedText(text, previousSpace);
98 }
99
100 11564 QString spanStyle(const QTextCharFormat &format) {
101 11564 QStringList declarations;
102
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 11564 if (const FontFamily *family = fontFamilyFor(format.fontFamilies().toStringList().value(0)))
103
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 118 declarations.append(QStringLiteral("font-family:") + family->stack);
104
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 11564 if (format.hasProperty(QTextFormat::FontPointSize)) {
105
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 58 const int points = qBound(FontPointSizeMin, qRound(format.fontPointSize()), FontPointSizeMax);
106
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 116 declarations.append(QStringLiteral("font-size:%1pt").arg(points));
107 }
108
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 11605 if (!format.isAnchor() && format.hasProperty(QTextFormat::ForegroundBrush) &&
109
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 11605 format.foreground().style() != Qt::NoBrush)
110
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 82 declarations.append(QStringLiteral("color:") + cssColor(format.foreground().color()));
111
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 23142 if (format.hasProperty(QTextFormat::BackgroundBrush) && format.background().style() != Qt::NoBrush &&
112
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 11578 format.background().color().alpha() > 0)
113
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 28 declarations.append(QStringLiteral("background-color:") + cssColor(format.background().color()));
114
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 23128 return declarations.join(QLatin1Char(';'));
115 11564 }
116
117 class Writer {
118 public:
119 521 explicit Writer(const MailHtmlWriter::Options &options) : m_options(options) {}
120
121 521 MailHtmlWriter::Result run(const QTextDocument &document) {
122 521 writeFrame(document.rootFrame());
123 521 closeAll();
124 521 closeRegion();
125 2084 return {m_out, m_contentIds};
126 521 }
127
128 private:
129 struct OpenList {
130 QTextList *list = nullptr;
131 int level = 0;
132 QString tag;
133 };
134 const MailHtmlWriter::Options &m_options;
135 QString m_out;
136 QStringList m_contentIds;
137 QVector<OpenList> m_lists;
138 bool m_paragraphOpen = false;
139 ParagraphStyle m_paragraphStyle;
140 bool m_preOpen = false;
141 bool m_afterFrame = false;
142 int m_quoteDepth = 0;
143 int m_region = NoRegion;
144
145 521 void writeFrame(QTextFrame *frame) {
146
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 5459 for (auto it = frame->begin(); !it.atEnd(); ++it) {
147
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 4938 if (QTextFrame *child = it.currentFrame()) {
148
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 55 closeAll();
149
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 55 if (auto *table = qobject_cast<QTextTable *>(child)) writeTable(table);
150 ✗ else writeFrame(child);
151 55 m_afterFrame = true;
152 55 continue;
153 55 }
154 // QTextDocument always keeps a block after a table; an empty one is
155 // structure, not a line the user typed.
156
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 4883 const QTextBlock block = it.currentBlock();
157
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 4883 const bool structural = m_afterFrame && block.length() <= 1 && !block.textList();
158 4883 m_afterFrame = false;
159
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 4883 if (!structural) writeBlock(block);
160 }
161 521 }
162
163 4908 void closeParagraph() {
164
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 6766 if (m_paragraphOpen) m_out += QStringLiteral("</p>");
165 4908 m_paragraphOpen = false;
166 4908 }
167 5462 void closePre() {
168
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 5477 if (m_preOpen) m_out += QStringLiteral("</pre>");
169 5462 m_preOpen = false;
170 5462 }
171 5496 void closeLists(int downToLevel = 0) {
172
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 5592 while (!m_lists.isEmpty() && m_lists.last().level > downToLevel) {
173
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 192 m_out += QStringLiteral("</li></") + m_lists.last().tag + QLatin1Char('>');
174 96 m_lists.removeLast();
175 }
176 5496 }
177 660 void setQuoteDepth(int depth) {
178
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 692 while (m_quoteDepth > depth) {
179
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 32 m_out += QStringLiteral("</blockquote>");
180 32 --m_quoteDepth;
181 }
182
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 692 while (m_quoteDepth < depth) {
183
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 32 m_out += QStringLiteral("<blockquote style=\"margin:0 0 0 0.8ex;border-left:1px solid #cccccc;"
184 "padding-left:1ex\">");
185 32 ++m_quoteDepth;
186 }
187 660 }
188 620 void closeAll() {
189 620 closeParagraph();
190 620 closePre();
191 620 closeLists();
192 620 setQuoteDepth(0);
193 620 }
194 565 void closeRegion() {
195
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 607 if (m_region != NoRegion) m_out += QStringLiteral("</div>");
196 565 m_region = NoRegion;
197 565 }
198 4830 void enterRegion(int region) {
199
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 4830 if (region == m_region) return;
200 44 closeAll();
201 44 closeRegion();
202 // The only class values MailJD writes: fixed region markers that no CSS
203 // refers to (as Thunderbird's moz-signature); the import reads them back.
204
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 79 if (region == SignatureRegion) m_out += QStringLiteral("<div class=\"mailjd-signature\">");
205
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 16 else if (region == QuoteRegion) m_out += QStringLiteral("<div class=\"mailjd-quote\">");
206
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 44 m_region = (region == SignatureRegion || region == QuoteRegion) ? region : NoRegion;
207 }
208
209 4830 void writeBlock(const QTextBlock &block) {
210
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 4830 enterRegion(ComposeDocumentFormat::region(block));
211
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 4830 const int depth = qBound(0, quoteLevel(block), 8);
212
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 4830 if (depth != m_quoteDepth) {
213
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 40 closeParagraph();
214
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 40 closePre();
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 40 closeLists();
216
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 40 setQuoteDepth(depth);
217 }
218
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 4830 if (isCodeBlock(block)) {
219
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 28 closeParagraph();
220
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 28 closeLists();
221
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 43 if (!m_preOpen) m_out += QStringLiteral("<pre>");
222
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 13 else m_out += QLatin1Char('\n');
223 28 m_preOpen = true;
224
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 28 QString text = block.text();
225
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 28 text.replace(QChar(0x2028), QLatin1Char('\n'));
226
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 28 m_out += text.toHtmlEscaped();
227 28 return;
228 28 }
229
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 4802 closePre();
230
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 4802 if (isHorizontalRule(block) && block.text().isEmpty()) {
231
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 2 closeParagraph();
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 2 closeLists();
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 2 m_out += QStringLiteral("<hr>");
234 2 return;
235 }
236
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 4800 if (QTextList *list = block.textList()) {
237
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 680 writeListItem(block, list);
238 680 return;
239 }
240
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 4120 closeLists();
241
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 4120 const int heading = qBound(0, block.blockFormat().headingLevel(), MaxHeadingLevel);
242
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 4120 const ParagraphStyle style = paragraphStyle(block);
243
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 4120 if (heading > 0) {
244
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 67 closeParagraph();
245
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 134 const QString tag = QStringLiteral("h%1").arg(heading + 1);
246
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 134 m_out += QLatin1Char('<') + tag + blockAttributes(style, {}) + QLatin1Char('>') +
247
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 268 inlineContent(block) + QStringLiteral("</") + tag + QLatin1Char('>');
248 67 return;
249 67 }
250
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 4053 if (block.length() <= 1) {
251 // An empty block is an empty line of its own: paragraphs carry no
252 // margins, so what the receiver sees is what was typed.
253
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 1613 closeParagraph();
254
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 4839 m_out += QStringLiteral("<p") + blockAttributes(style, QStringLiteral("margin:0")) + QStringLiteral("><br></p>");
255 1613 return;
256 }
257
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 2440 if (m_paragraphOpen && m_paragraphStyle == style) {
258
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 1164 m_out += QStringLiteral("<br>") + inlineContent(block);
259 582 return;
260 }
261
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 1858 closeParagraph();
262
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 5574 m_out += QStringLiteral("<p") + blockAttributes(style, QStringLiteral("margin:0")) +
263
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 5574 QLatin1Char('>') + inlineContent(block);
264 1858 m_paragraphOpen = true;
265 1858 m_paragraphStyle = style;
266 4120 }
267
268 96 static QString listTag(const QTextListFormat &format, QString &styleType) {
269
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 96 switch (format.style()) {
270 ✗ case QTextListFormat::ListCircle: styleType = QStringLiteral("circle"); return QStringLiteral("ul");
271 ✗ case QTextListFormat::ListSquare: styleType = QStringLiteral("square"); return QStringLiteral("ul");
272 186 case QTextListFormat::ListDecimal: styleType = QStringLiteral("decimal"); return QStringLiteral("ol");
273 ✗ case QTextListFormat::ListLowerAlpha: styleType = QStringLiteral("lower-alpha"); return QStringLiteral("ol");
274 ✗ case QTextListFormat::ListUpperAlpha: styleType = QStringLiteral("upper-alpha"); return QStringLiteral("ol");
275 ✗ case QTextListFormat::ListLowerRoman: styleType = QStringLiteral("lower-roman"); return QStringLiteral("ol");
276 ✗ case QTextListFormat::ListUpperRoman: styleType = QStringLiteral("upper-roman"); return QStringLiteral("ol");
277 102 default: styleType = QStringLiteral("disc"); return QStringLiteral("ul");
278 }
279 }
280
281 680 void writeListItem(const QTextBlock &block, QTextList *list) {
282
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 680 closeParagraph();
283
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 680 const int level = qBound(1, list->format().indent(), MaxListLevel);
284
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 680 closeLists(level);
285
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 680 if (!m_lists.isEmpty() && m_lists.last().level == level && m_lists.last().list != list)
286
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 6 closeLists(level - 1);
287
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 680 if (m_lists.isEmpty() || m_lists.last().level < level) {
288 96 QString styleType;
289
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 96 const QString tag = listTag(list->format(), styleType);
290 // A deeper list opens inside the open item; a list without a parent
291 // item at a deeper level starts at its own level.
292
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 192 m_out += QLatin1Char('<') + tag + QStringLiteral(" style=\"list-style-type:") + styleType +
293
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 288 QStringLiteral(";margin-top:0;margin-bottom:0\">");
294
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 96 m_lists.append({list, level, tag});
295 96 } else {
296
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 584 m_out += QStringLiteral("</li>");
297 }
298
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 680 const ParagraphStyle style = paragraphStyle(block);
299
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 1360 m_out += QStringLiteral("<li") + blockAttributes(style, {}) + QLatin1Char('>') + inlineContent(block);
300 776 }
301
302 55 void writeTable(QTextTable *table) {
303
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 55 const QTextTableFormat format = table->format();
304
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 55 const int headerRows = qBound(0, format.headerRowCount(), table->rows());
305
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 55 const bool border = format.border() > 0;
306 110 m_out += QStringLiteral("<table cellpadding=\"4\" cellspacing=\"0\" border=\"%1\" style=\"border-collapse:"
307 "collapse%2\">")
308
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 110 .arg(border ? 1 : 0)
309
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 57 .arg(border ? QStringLiteral(";border:1px solid #c8c8c8") : QString());
310
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 55 const auto widths = format.columnWidthConstraints();
311
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 189 for (int row = 0; row < table->rows(); ++row) {
312
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 189 if (row == 0) m_out += headerRows > 0 ? QStringLiteral("<thead>") : QStringLiteral("<tbody>");
313
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 136 if (row == headerRows && headerRows > 0) m_out += QStringLiteral("</thead><tbody>");
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 134 m_out += QStringLiteral("<tr>");
315
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 386 for (int column = 0; column < table->columns(); ++column) {
316
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 252 const QTextTableCell cell = table->cellAt(row, column);
317 // A merged cell is written once, where it starts (pasted tables).
318
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 252 if (!cell.isValid() || cell.row() != row || cell.column() != column) continue;
319
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 502 const QString tag = row < headerRows ? QStringLiteral("th") : QStringLiteral("td");
320 251 QString attributes;
321
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 251 if (cell.columnSpan() > 1) attributes += QStringLiteral(" colspan=\"%1\"").arg(qMin(cell.columnSpan(), 64));
322
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 251 if (cell.rowSpan() > 1) attributes += QStringLiteral(" rowspan=\"%1\"").arg(qMin(cell.rowSpan(), 64));
323
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 251 if (row == 0 && column < widths.size() && widths.at(column).type() == QTextLength::PercentageLength)
324
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 8 attributes += QStringLiteral(" width=\"%1%\"").arg(qBound(1, qRound(widths.at(column).rawValue()), 100));
325
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 259 if (border) attributes += QStringLiteral(" style=\"border:1px solid #c8c8c8\"");
326
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 251 m_out += QLatin1Char('<') + tag + attributes + QLatin1Char('>');
327 // The cell's blocks by position: a nested table's frame iterator did
328 // not end inside a merged cell (fuzz_compose_html_import). Nested
329 // tables are not offered (D-6); their lines join the cell.
330 251 bool first = true;
331
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 251 const QTextDocument *document = table->document();
332
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 251 for (QTextBlock block = document->findBlock(cell.firstPosition());
333
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 514 block.isValid() && block.position() <= cell.lastPosition(); block = block.next()) {
334
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 275 if (!first) m_out += QStringLiteral("<br>");
335
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 263 m_out += inlineContent(block);
336
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 263 first = false;
337 }
338
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 502 m_out += QStringLiteral("</") + tag + QLatin1Char('>');
339 252 }
340
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 134 m_out += QStringLiteral("</tr>");
341 }
342
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 165 m_out += (headerRows >= table->rows() && headerRows > 0) ? QStringLiteral("</thead></table>")
343
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 110 : QStringLiteral("</tbody></table>");
344 55 }
345
346 30 QString imageHtml(const QTextImageFormat &image) {
347
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 30 const QString contentId = m_options.contentIdFor ? m_options.contentIdFor(image.name()) : QString();
348
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 30 QString alt = image.name().startsWith(ImageScheme) ? QString() : image.name();
349
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 30 if (image.hasProperty(ImageAltProperty)) alt = image.stringProperty(ImageAltProperty);
350
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 30 if (contentId.isEmpty() || contentId.contains(QLatin1Char('"')) || contentId.contains(QLatin1Char('>')))
351
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 12 return escapedText(alt.isEmpty() ? QString() : QStringLiteral("[") + alt + QStringLiteral("]"));
352
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 26 if (!m_contentIds.contains(contentId)) m_contentIds.append(contentId);
353
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 78 QString html = QStringLiteral("<img src=\"cid:") + contentId.toHtmlEscaped() + QStringLiteral("\" alt=\"") +
354
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 78 alt.toHtmlEscaped() + QLatin1Char('"');
355
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 62 if (image.width() > 0) html += QStringLiteral(" width=\"%1\"").arg(qBound(1, qRound(image.width()), 4096));
356
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 26 if (image.height() > 0) html += QStringLiteral(" height=\"%1\"").arg(qBound(1, qRound(image.height()), 4096));
357
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 26 return html + QLatin1Char('>');
358 30 }
359
360 // Headings are bold by themselves; their bold is not repeated.
361 3450 QString inlineContent(const QTextBlock &block) {
362
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 3450 const bool heading = block.blockFormat().headingLevel() > 0;
363 3450 bool previousSpace = false;
364 3450 QString out;
365
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 15044 for (auto it = block.begin(); !it.atEnd(); ++it) {
366
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 11594 const QTextFragment fragment = it.fragment();
367
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 11624 if (!fragment.isValid()) continue;
368
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 11594 const QTextCharFormat format = fragment.charFormat();
369
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 11594 if (format.isImageFormat()) {
370 // One object character per image; a fragment can hold several.
371
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 60 for (int i = 0; i < fragment.text().size(); ++i) out += imageHtml(format.toImageFormat());
372 30 previousSpace = false;
373 30 continue;
374 30 }
375
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 11564 QString text = escapedText(fragment.text(), previousSpace);
376
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 11564 if (text.isEmpty()) continue;
377
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 11596 if (isInlineCode(format)) text = QStringLiteral("<code>") + text + QStringLiteral("</code>");
378
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 11564 if (format.verticalAlignment() == QTextCharFormat::AlignSuperScript)
379
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 8 text = QStringLiteral("<sup>") + text + QStringLiteral("</sup>");
380
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 11560 else if (format.verticalAlignment() == QTextCharFormat::AlignSubScript)
381 ✗ text = QStringLiteral("<sub>") + text + QStringLiteral("</sub>");
382
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 11582 if (format.fontStrikeOut()) text = QStringLiteral("<s>") + text + QStringLiteral("</s>");
383
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 11584 if (format.fontUnderline() && !format.isAnchor()) text = QStringLiteral("<u>") + text + QStringLiteral("</u>");
384
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 13984 if (format.fontItalic()) text = QStringLiteral("<em>") + text + QStringLiteral("</em>");
385
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 11564 if (format.fontWeight() >= QFont::Bold && !heading)
386
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 2744 text = QStringLiteral("<strong>") + text + QStringLiteral("</strong>");
387
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 11564 const QString style = spanStyle(format);
388
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 11933 if (!style.isEmpty()) text = QStringLiteral("<span style=\"") + style + QStringLiteral("\">") + text + QStringLiteral("</span>");
389
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 11564 if (format.isAnchor() && isAllowedLink(format.anchorHref()))
390
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 5685 text = QStringLiteral("<a href=\"") + format.anchorHref().toHtmlEscaped() + QStringLiteral("\">") + text +
391
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 5685 QStringLiteral("</a>");
392
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 11564 out += text;
393 11594 }
394 3450 return out;
395 ✗ }
396 };
397
398 } // namespace
399
400 521 MailHtmlWriter::Result MailHtmlWriter::writeBody(const QTextDocument &document, const Options &options) {
401 521 Writer writer(options);
402
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 1042 return writer.run(document);
403 521 }
404
405 497 QString MailHtmlWriter::wrapDocument(const QString &bodyHtml, bool rightToLeft) {
406 994 return QStringLiteral("<!DOCTYPE html>\n<html><head><meta charset=\"utf-8\">"
407 "<meta name=\"viewport\" content=\"width=device-width\"></head>\n"
408 "<body><div%1 style=\"font-family:system-ui,-apple-system,'Segoe UI',Roboto,"
409 "Helvetica,Arial,sans-serif;max-width:44em\">")
410
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 996 .arg(rightToLeft ? QStringLiteral(" dir=\"rtl\"") : QString()) +
411
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 1491 bodyHtml + QStringLiteral("</div></body></html>\n");
412 }
413
414 12 QString MailHtmlWriter::quoteContainer(const QString &attributionText, const QString &quotedBodyHtml) {
415
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 36 return QStringLiteral("<div class=\"mailjd-quote\"><p style=\"margin:0\">") + escapedText(attributionText) +
416
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 36 QStringLiteral("</p><blockquote style=\"margin:0 0 0 0.8ex;border-left:1px solid #cccccc;"
417 12 "padding-left:1ex\">") +
418
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 36 quotedBodyHtml + QStringLiteral("</blockquote></div>");
419 }
420
421 namespace {
422 8 bool fail(QString *problem, const QString &text) {
423
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 8 if (problem) *problem = text;
424 8 return false;
425 }
426 } // namespace
427
428 63 bool MailHtmlWriter::conforms(const QString &html, QString *problem) {
429 63 qsizetype position = 0;
430 while (true) {
431 1548 const qsizetype open = html.indexOf(QLatin1Char('<'), position);
432
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 1556 if (open < 0) return true;
433 1493 const qsizetype close = html.indexOf(QLatin1Char('>'), open);
434
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 1493 if (close < 0) return fail(problem, QStringLiteral("unterminated tag"));
435
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 1493 const QString tag = html.mid(open + 1, close - open - 1);
436 1493 position = close + 1;
437
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 1493 if (tag.startsWith(QLatin1String("!DOCTYPE html"))) continue;
438
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 1440 if (tag.startsWith(QLatin1Char('!'))) return fail(problem, QStringLiteral("comment or declaration"));
439 1438 QString rest = tag;
440
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 1438 if (rest.startsWith(QLatin1Char('/'))) rest = rest.mid(1);
441 1438 qsizetype nameEnd = 0;
442
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 5160 while (nameEnd < rest.size() && rest.at(nameEnd).isLetterOrNumber()) ++nameEnd;
443
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 1438 const QString name = rest.left(nameEnd).toLower();
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 1439 if (!allowedElements().contains(name)) return fail(problem, QStringLiteral("element ") + name);
445 // Attributes: name="value" pairs only (the writer always quotes).
446 1437 qsizetype at = nameEnd;
447
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 1985 while (at < rest.size()) {
448
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 1108 while (at < rest.size() && rest.at(at).isSpace()) ++at;
449
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 554 if (at >= rest.size()) break;
450 554 const qsizetype equals = rest.indexOf(QLatin1Char('='), at);
451
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 554 if (equals < 0 || equals + 1 >= rest.size() || rest.at(equals + 1) != QLatin1Char('"'))
452 ✗ return fail(problem, QStringLiteral("unquoted attribute in ") + name);
453
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 554 const QString attribute = rest.mid(at, equals - at).trimmed().toLower();
454 554 const qsizetype valueEnd = rest.indexOf(QLatin1Char('"'), equals + 2);
455
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 554 if (valueEnd < 0) return fail(problem, QStringLiteral("unterminated attribute"));
456
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 554 const QString value = rest.mid(equals + 2, valueEnd - equals - 2);
457 554 at = valueEnd + 1;
458
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 555 if (!allowedAttributes().contains(attribute)) return fail(problem, QStringLiteral("attribute ") + attribute);
459
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 553 if (attribute == QLatin1String("href")) {
460 140 QString href = value;
461
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 280 href.replace(QStringLiteral("&amp;"), QStringLiteral("&"));
462
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 141 if (!ComposeDocumentFormat::isAllowedLink(href)) return fail(problem, QStringLiteral("link ") + value);
463 140 }
464
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 554 if (attribute == QLatin1String("class") && value != QLatin1String("mailjd-signature") &&
465
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 554 value != QLatin1String("mailjd-quote"))
466
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 1 return fail(problem, QStringLiteral("class ") + value);
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 551 if (attribute == QLatin1String("src") && !value.startsWith(QLatin1String("cid:")))
468
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 1 return fail(problem, QStringLiteral("image source ") + value);
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 550 if (attribute == QLatin1String("style")) {
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 218 const QString lower = value.toLower();
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 435 if (lower.contains(QLatin1String("url(")) || lower.contains(QLatin1String("expression")) ||
472
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 435 lower.contains(QLatin1Char('\\')) || lower.contains(QLatin1String("@import")))
473
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 1 return fail(problem, QStringLiteral("style value ") + value);
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 530 for (const QString &declaration : value.split(QLatin1Char(';'), Qt::SkipEmptyParts)) {
475
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 314 const QString property = declaration.section(QLatin1Char(':'), 0, 0).trimmed().toLower();
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 314 if (!allowedStyleProperties().contains(property))
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 1 return fail(problem, QStringLiteral("style property ") + property);
478 531 }
479 218 }
480 560 }
481 2992 }
482 }
483
484 1438 const QSet<QString> &MailHtmlWriter::allowedElements() {
485 static const QSet<QString> elements{
486 2 QStringLiteral("html"), QStringLiteral("head"), QStringLiteral("meta"), QStringLiteral("body"),
487 2 QStringLiteral("p"), QStringLiteral("br"), QStringLiteral("strong"), QStringLiteral("em"),
488 2 QStringLiteral("u"), QStringLiteral("s"), QStringLiteral("sup"), QStringLiteral("sub"),
489 2 QStringLiteral("code"), QStringLiteral("pre"), QStringLiteral("h2"), QStringLiteral("h3"),
490 2 QStringLiteral("h4"), QStringLiteral("blockquote"), QStringLiteral("ul"), QStringLiteral("ol"),
491 2 QStringLiteral("li"), QStringLiteral("a"), QStringLiteral("img"), QStringLiteral("span"),
492 2 QStringLiteral("hr"), QStringLiteral("table"), QStringLiteral("thead"), QStringLiteral("tbody"), QStringLiteral("tr"),
493
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 1506 QStringLiteral("th"), QStringLiteral("td"), QStringLiteral("div")};
494 1438 return elements;
495 66 }
496
497 554 const QSet<QString> &MailHtmlWriter::allowedAttributes() {
498 static const QSet<QString> attributes{
499 2 QStringLiteral("style"), QStringLiteral("dir"), QStringLiteral("href"), QStringLiteral("src"),
500 2 QStringLiteral("alt"), QStringLiteral("width"), QStringLiteral("height"),
501 2 QStringLiteral("cellpadding"), QStringLiteral("cellspacing"), QStringLiteral("border"),
502 2 QStringLiteral("colspan"), QStringLiteral("rowspan"),
503
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 590 QStringLiteral("charset"), QStringLiteral("name"), QStringLiteral("content"), QStringLiteral("class")};
504 554 return attributes;
505 34 }
506
507 314 const QSet<QString> &MailHtmlWriter::allowedStyleProperties() {
508 static const QSet<QString> properties{
509 2 QStringLiteral("font-family"), QStringLiteral("font-size"), QStringLiteral("color"),
510 2 QStringLiteral("background-color"), QStringLiteral("text-align"), QStringLiteral("margin"),
511 2 QStringLiteral("margin-left"), QStringLiteral("margin-right"), QStringLiteral("margin-top"),
512 2 QStringLiteral("margin-bottom"), QStringLiteral("list-style-type"),
513 2 QStringLiteral("border"), QStringLiteral("border-left"), QStringLiteral("border-collapse"),
514 2 QStringLiteral("width"), QStringLiteral("padding"), QStringLiteral("padding-left"),
515
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 354 QStringLiteral("max-width")};
516 314 return properties;
517 38 }
518