Messagelib

mailinglist.cpp
1/*
2 * SPDX-License-Identifier: LGPL-2.1-or-later
3 *
4 */
5
6#include "mailinglist.h"
7
8#include "messagecore_debug.h"
9#include <KConfig>
10#include <KConfigGroup>
11#include <QUrl>
12
13#include <QSharedData>
14#include <QStringList>
15
16using namespace MessageCore;
17
18using MagicDetectorFunc = QString (*)(const KMime::Message::Ptr &, QByteArray &, QString &);
19
20/* Sender: (owner-([^@]+)|([^@+]-owner)@ */
21static QString check_sender(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
22{
23 QString header = message->sender()->asUnicodeString();
24
25 if (header.isEmpty()) {
26 return {};
27 }
28
29 if (header.left(6) == QLatin1StringView("owner-")) {
30 headerName = "Sender";
31 headerValue = header;
32 header = header.mid(6, header.indexOf(QLatin1Char('@')) - 6);
33 } else {
34 const int index = header.indexOf(QLatin1StringView("-owner@ "));
35 if (index == -1) {
36 return {};
37 }
38
39 header.truncate(index);
40 headerName = "Sender";
41 headerValue = header;
42 }
43
44 return header;
45}
46
47/* X-BeenThere: ([^@]+) */
48static QString check_x_beenthere(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
49{
50 QString header;
51 if (auto hrd = message->headerByType("X-BeenThere")) {
52 header = hrd->asUnicodeString();
53 }
54 if (header.isNull() || header.indexOf(QLatin1Char('@')) == -1) {
55 return {};
56 }
57
58 headerName = "X-BeenThere";
59 headerValue = header;
60 header.truncate(header.indexOf(QLatin1Char('@')));
61
62 return header;
63}
64
65/* Delivered-To:: <([^@]+) */
66static QString check_delivered_to(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
67{
68 QString header;
69 if (auto hrd = message->headerByType("Delivered-To")) {
70 header = hrd->asUnicodeString();
71 }
72 if (header.isNull() || header.left(13) != QLatin1StringView("mailing list") || header.indexOf(QLatin1Char('@')) == -1) {
73 return {};
74 }
75
76 headerName = "Delivered-To";
77 headerValue = header;
78
79 return header.mid(13, header.indexOf(QLatin1Char('@')) - 13);
80}
81
82/* X-Mailing-List: <?([^@]+) */
83static QString check_x_mailing_list(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
84{
85 QString header;
86 if (auto hrd = message->headerByType("X-Mailing-List")) {
87 header = hrd->asUnicodeString();
88 }
89 if (header.isEmpty()) {
90 return {};
91 }
92
93 if (header.indexOf(QLatin1Char('@')) < 1) {
94 return {};
95 }
96
97 headerName = "X-Mailing-List";
98 headerValue = header;
99 if (header[0] == QLatin1Char('<')) {
100 header = header.mid(1, header.indexOf(QLatin1Char('@')) - 1);
101 } else {
102 header.truncate(header.indexOf(QLatin1Char('@')));
103 }
104
105 return header;
106}
107
108/* List-Id: [^<]* <([^.]+) */
109static QString check_list_id(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
110{
111 QString header;
112 if (auto hrd = message->headerByType("List-Id")) {
113 header = hrd->asUnicodeString();
114 }
115 if (header.isEmpty()) {
116 return {};
117 }
118
119 const int leftAnglePos = header.indexOf(QLatin1Char('<'));
120 if (leftAnglePos < 0) {
121 return {};
122 }
123
124 const int firstDotPos = header.indexOf(QLatin1Char('.'), leftAnglePos);
125 if (firstDotPos < 0) {
126 return {};
127 }
128
129 headerName = "List-Id";
130 headerValue = header.mid(leftAnglePos);
131 header = header.mid(leftAnglePos + 1, firstDotPos - leftAnglePos - 1);
132
133 return header;
134}
135
136/* List-Post: <mailto:[^< ]*>) */
137static QString check_list_post(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
138{
139 QString header;
140 if (auto hrd = message->headerByType("List-Post")) {
141 header = hrd->asUnicodeString();
142 }
143 if (header.isEmpty()) {
144 return {};
145 }
146
147 int leftAnglePos = header.indexOf(QLatin1StringView("<mailto:"));
148 if (leftAnglePos < 0) {
149 return {};
150 }
151
152 headerName = "List-Post";
153 headerValue = header;
154 header = header.mid(leftAnglePos + 8, header.length());
155 header.truncate(header.indexOf(QLatin1Char('@')));
156
157 return header;
158}
159
160/* Mailing-List: list ([^@]+) */
161static QString check_mailing_list(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
162{
163 QString header;
164 if (auto hrd = message->headerByType("Mailing-List")) {
165 header = hrd->asUnicodeString();
166 }
167 if (header.isEmpty()) {
168 return {};
169 }
170
171 if (header.left(5) != QLatin1StringView("list ") || header.indexOf(QLatin1Char('@')) < 5) {
172 return {};
173 }
174
175 headerName = "Mailing-List";
176 headerValue = header;
177 header = header.mid(5, header.indexOf(QLatin1Char('@')) - 5);
178
179 return header;
180}
181
182/* X-Loop: ([^@]+) */
183static QString check_x_loop(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
184{
185 QString header;
186 if (auto hrd = message->headerByType("X-Loop")) {
187 header = hrd->asUnicodeString();
188 }
189 if (header.isEmpty()) {
190 return {};
191 }
192
193 const int indexOfHeader(header.indexOf(QLatin1Char('@')));
194 if (indexOfHeader < 2) {
195 return {};
196 }
197
198 headerName = "X-Loop";
199 headerValue = header;
200 header.truncate(indexOfHeader);
201
202 return header;
203}
204
205/* X-ML-Name: (.+) */
206static QString check_x_ml_name(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
207{
208 QString header;
209 if (auto hrd = message->headerByType("X-ML-Name")) {
210 header = hrd->asUnicodeString();
211 }
212 if (header.isEmpty()) {
213 return {};
214 }
215
216 headerName = "X-ML-Name";
217 headerValue = header;
218 header.truncate(header.indexOf(QLatin1Char('@')));
219
220 return header;
221}
222
223static const MagicDetectorFunc magic_detectors[] = {check_list_id,
224 check_list_post,
225 check_sender,
226 check_x_mailing_list,
227 check_mailing_list,
228 check_delivered_to,
229 check_x_beenthere,
230 check_x_loop,
231 check_x_ml_name};
232
233static QStringList headerToAddress(const QString &header)
234{
235 QStringList addresses;
236 if (header.isEmpty()) {
237 return addresses;
238 }
239
240 int start = 0;
241 while ((start = header.indexOf(QLatin1Char('<'), start)) != -1) {
242 int end = 0;
243 if ((end = header.indexOf(QLatin1Char('>'), ++start)) == -1) {
244 qCWarning(MESSAGECORE_LOG) << "Serious mailing list header parsing error!";
245 return addresses;
246 }
247
248 addresses.append(header.mid(start, end - start));
249 }
250
251 return addresses;
252}
253
254class Q_DECL_HIDDEN MessageCore::MailingList::MailingListPrivate : public QSharedData
255{
256public:
257 MailingListPrivate()
258 : mFeatures(None)
259
260 {
261 }
262
263 MailingListPrivate(const MailingListPrivate &other)
264 : QSharedData(other)
265 {
266 mFeatures = other.mFeatures;
267 mHandler = other.mHandler;
268 mPostUrls = other.mPostUrls;
269 mSubscribeUrls = other.mSubscribeUrls;
270 mUnsubscribeUrls = other.mUnsubscribeUrls;
271 mHelpUrls = other.mHelpUrls;
272 mArchiveUrls = other.mArchiveUrls;
273 mOwnerUrls = other.mOwnerUrls;
274 mArchivedAtUrls = other.mArchivedAtUrls;
275 mId = other.mId;
276 }
277
278 Features mFeatures;
279 Handler mHandler{KMail};
280 QList<QUrl> mPostUrls;
281 QList<QUrl> mSubscribeUrls;
282 QList<QUrl> mUnsubscribeUrls;
283 QList<QUrl> mHelpUrls;
284 QList<QUrl> mArchiveUrls;
285 QList<QUrl> mOwnerUrls;
286 QList<QUrl> mArchivedAtUrls;
287 QString mId;
288};
289
290MailingList MailingList::detect(const KMime::Message::Ptr &message)
291{
292 MailingList mailingList;
293
294 if (auto hrd = message->headerByType("List-Post")) {
295 mailingList.setPostUrls(QUrl::fromStringList(headerToAddress(hrd->asUnicodeString())));
296 }
297
298 if (auto hrd = message->headerByType("List-Help")) {
299 mailingList.setHelpUrls(QUrl::fromStringList(headerToAddress(hrd->asUnicodeString())));
300 }
301
302 if (auto hrd = message->headerByType("List-Subscribe")) {
303 mailingList.setSubscribeUrls(QUrl::fromStringList(headerToAddress(hrd->asUnicodeString())));
304 }
305
306 if (auto hrd = message->headerByType("List-Unsubscribe")) {
307 mailingList.setUnsubscribeUrls(QUrl::fromStringList(headerToAddress(hrd->asUnicodeString())));
308 }
309
310 if (auto hrd = message->headerByType("List-Archive")) {
311 mailingList.setArchiveUrls(QUrl::fromStringList(headerToAddress(hrd->asUnicodeString())));
312 }
313
314 if (auto hrd = message->headerByType("List-Owner")) {
315 mailingList.setOwnerUrls(QUrl::fromStringList(headerToAddress(hrd->asUnicodeString())));
316 }
317
318 if (auto hrd = message->headerByType("Archived-At")) {
319 mailingList.setArchivedAtUrls(QUrl::fromStringList(headerToAddress(hrd->asUnicodeString())));
320 }
321
322 if (auto hrd = message->headerByType("List-Id")) {
323 mailingList.setId(hrd->asUnicodeString());
324 }
325
326 return mailingList;
327}
328
329QString MailingList::name(const KMime::Message::Ptr &message, QByteArray &headerName, QString &headerValue)
330{
331 QString mailingList;
332 headerName = QByteArray();
333 headerValue.clear();
334
335 if (!message) {
336 return {};
337 }
338
339 for (const MagicDetectorFunc &detector : magic_detectors) {
340 mailingList = detector(message, headerName, headerValue);
341 if (!mailingList.isNull()) {
342 return mailingList;
343 }
344 }
345
346 return {};
347}
348
349MailingList::MailingList()
350 : d(new MailingListPrivate)
351{
352}
353
354MailingList::MailingList(const MailingList &other)
355
356 = default;
357
358MailingList &MailingList::operator=(const MailingList &other)
359{
360 if (this != &other) {
361 d = other.d;
362 }
363
364 return *this;
365}
366
367bool MailingList::operator==(const MailingList &other) const
368{
369 return other.features() == d->mFeatures && other.handler() == d->mHandler && other.postUrls() == d->mPostUrls && other.subscribeUrls() == d->mSubscribeUrls
370 && other.unsubscribeUrls() == d->mUnsubscribeUrls && other.helpUrls() == d->mHelpUrls && other.archiveUrls() == d->mArchiveUrls
371 && other.ownerUrls() == d->mOwnerUrls && other.archivedAtUrls() == d->mArchivedAtUrls && other.id() == d->mId;
372}
373
374MailingList::~MailingList() = default;
375
376MailingList::Features MailingList::features() const
377{
378 return d->mFeatures;
379}
380
385
386MailingList::Handler MailingList::handler() const
387{
388 return d->mHandler;
389}
390
391void MailingList::setPostUrls(const QList<QUrl> &urls)
392{
393 d->mFeatures |= Post;
394
395 if (urls.empty()) {
396 d->mFeatures ^= Post;
397 }
398
399 d->mPostUrls = urls;
400}
401
402QList<QUrl> MailingList::postUrls() const
403{
404 return d->mPostUrls;
405}
406
407void MailingList::setSubscribeUrls(const QList<QUrl> &urls)
408{
409 d->mFeatures |= Subscribe;
410
411 if (urls.empty()) {
412 d->mFeatures ^= Subscribe;
413 }
414
415 d->mSubscribeUrls = urls;
416}
417
418QList<QUrl> MailingList::subscribeUrls() const
419{
420 return d->mSubscribeUrls;
421}
422
423void MailingList::setUnsubscribeUrls(const QList<QUrl> &urls)
424{
425 d->mFeatures |= Unsubscribe;
426
427 if (urls.empty()) {
428 d->mFeatures ^= Unsubscribe;
429 }
430
431 d->mUnsubscribeUrls = urls;
432}
433
434QList<QUrl> MailingList::unsubscribeUrls() const
435{
436 return d->mUnsubscribeUrls;
437}
438
439void MailingList::setHelpUrls(const QList<QUrl> &urls)
440{
441 d->mFeatures |= Help;
442
443 if (urls.empty()) {
444 d->mFeatures ^= Help;
445 }
446
447 d->mHelpUrls = urls;
448}
449
450QList<QUrl> MailingList::helpUrls() const
451{
452 return d->mHelpUrls;
453}
454
455void MailingList::setArchiveUrls(const QList<QUrl> &urls)
456{
457 d->mFeatures |= Archive;
458
459 if (urls.empty()) {
460 d->mFeatures ^= Archive;
461 }
462
463 d->mArchiveUrls = urls;
464}
465
466QList<QUrl> MailingList::archiveUrls() const
467{
468 return d->mArchiveUrls;
469}
470
471void MailingList::setOwnerUrls(const QList<QUrl> &urls)
472{
473 d->mFeatures |= Owner;
474
475 if (urls.empty()) {
476 d->mFeatures ^= Owner;
477 }
478
479 d->mOwnerUrls = urls;
480}
481
482QList<QUrl> MailingList::ownerUrls() const
483{
484 return d->mOwnerUrls;
485}
486
487void MailingList::setArchivedAtUrls(const QList<QUrl> &urls)
488{
489 d->mFeatures |= ArchivedAt;
490
491 if (urls.isEmpty()) {
492 d->mFeatures ^= ArchivedAt;
493 }
494
495 d->mArchivedAtUrls = urls;
496}
497
498QList<QUrl> MailingList::archivedAtUrls() const
499{
500 return d->mArchivedAtUrls;
501}
502
503void MailingList::setId(const QString &id)
504{
505 d->mFeatures |= Id;
506
507 if (id.isEmpty()) {
508 d->mFeatures ^= Id;
509 }
510
511 d->mId = id;
512}
513
514QString MailingList::id() const
515{
516 return d->mId;
517}
518
519void MailingList::writeConfig(KConfigGroup &group) const
520{
521 if (d->mFeatures != Feature::None) {
522 group.writeEntry("MailingListFeatures", static_cast<int>(d->mFeatures));
523 } else {
524 group.deleteEntry("MailingListFeatures");
525 }
526 if (d->mHandler != Handler::KMail) {
527 group.writeEntry("MailingListHandler", static_cast<int>(d->mHandler));
528 } else {
529 group.deleteEntry("MailingListHandler");
530 }
531 if (!d->mId.isEmpty()) {
532 group.writeEntry("MailingListId", d->mId);
533 } else {
534 group.deleteEntry("MailingListId");
535 }
536 QStringList lst = QUrl::toStringList(d->mPostUrls);
537 if (!lst.isEmpty()) {
538 group.writeEntry("MailingListPostingAddress", lst);
539 } else {
540 group.deleteEntry("MailingListPostingAddress");
541 }
542
543 lst = QUrl::toStringList(d->mSubscribeUrls);
544 if (!lst.isEmpty()) {
545 group.writeEntry("MailingListSubscribeAddress", lst);
546 } else {
547 group.deleteEntry("MailingListSubscribeAddress");
548 }
549
550 lst = QUrl::toStringList(d->mUnsubscribeUrls);
551 if (!lst.isEmpty()) {
552 group.writeEntry("MailingListUnsubscribeAddress", lst);
553 } else {
554 group.deleteEntry("MailingListUnsubscribeAddress");
555 }
556
557 lst = QUrl::toStringList(d->mArchiveUrls);
558 if (!lst.isEmpty()) {
559 group.writeEntry("MailingListArchiveAddress", lst);
560 } else {
561 group.deleteEntry("MailingListArchiveAddress");
562 }
563
564 lst = QUrl::toStringList(d->mOwnerUrls);
565 if (!lst.isEmpty()) {
566 group.writeEntry("MailingListOwnerAddress", lst);
567 } else {
568 group.deleteEntry("MailingListOwnerAddress");
569 }
570
571 lst = QUrl::toStringList(d->mHelpUrls);
572 if (!lst.isEmpty()) {
573 group.writeEntry("MailingListHelpAddress", lst);
574 } else {
575 group.deleteEntry("MailingListHelpAddress");
576 }
577
578 /* Note: mArchivedAtUrl deliberately not saved here as it refers to a single
579 * instance of a message rather than an element of a general mailing list.
580 * http://reviewboard.kde.org/r/1768/#review2783
581 */
582}
583
584void MailingList::readConfig(const KConfigGroup &group)
585{
586 d->mFeatures = static_cast<MailingList::Features>(group.readEntry("MailingListFeatures", 0));
587 d->mHandler = static_cast<MailingList::Handler>(group.readEntry("MailingListHandler", static_cast<int>(MailingList::KMail)));
588 d->mId = group.readEntry("MailingListId");
589 d->mPostUrls = QUrl::fromStringList(group.readEntry("MailingListPostingAddress", QStringList()));
590 d->mSubscribeUrls = QUrl::fromStringList(group.readEntry("MailingListSubscribeAddress", QStringList()));
591 d->mUnsubscribeUrls = QUrl::fromStringList(group.readEntry("MailingListUnsubscribeAddress", QStringList()));
592 d->mArchiveUrls = QUrl::fromStringList(group.readEntry("MailingListArchiveAddress", QStringList()));
593 d->mOwnerUrls = QUrl::fromStringList(group.readEntry("MailingListOwnerAddress", QStringList()));
594 d->mHelpUrls = QUrl::fromStringList(group.readEntry("MailingListHelpAddress", QStringList()));
595}
KConfigGroup::deleteEntry
void deleteEntry(const char *key, WriteConfigFlags pFlags=Normal)
KConfigGroup::writeEntry
void writeEntry(const char *key, const char *value, WriteConfigFlags pFlags=Normal)
KConfigGroup::readEntry
QString readEntry(const char *key, const char *aDefault=nullptr) const
KMime::Message::Ptr
QSharedPointer< Message > Ptr
MessageCore::MailingList
A class to extract information about mailing lists from emails.
Definition mailinglist.h:32
MessageCore::MailingList::MailingList
MailingList()
Creates an empty mailing list.
Definition mailinglist.cpp:349
MessageCore::MailingList::Handler
Handler
Defines what entity should manage the mailing list.
Definition mailinglist.h:37
MessageCore::MailingList::KMail
@ KMail
The list is handled by KMail.
Definition mailinglist.h:38
MessageCore::MailingList::setHelpUrls
void setHelpUrls(const QList< QUrl > &urls)
Sets the list of List-Help urls.
Definition mailinglist.cpp:439
MessageCore::MailingList::~MailingList
~MailingList()
Destroys the mailing list.
MessageCore::MailingList::detect
static MailingList detect(const KMime::Message::Ptr &message)
Extracts the information about a mailing list from the given message.
Definition mailinglist.cpp:290
MessageCore::MailingList::setId
void setId(const QString &id)
Sets the id of the mailing list.
Definition mailinglist.cpp:503
MessageCore::MailingList::archiveUrls
QList< QUrl > archiveUrls() const
Returns the list of List-Archive urls.
Definition mailinglist.cpp:466
MessageCore::MailingList::setHandler
void setHandler(Handler handler)
Sets the handler for the mailing list.
Definition mailinglist.cpp:381
MessageCore::MailingList::setUnsubscribeUrls
void setUnsubscribeUrls(const QList< QUrl > &urls)
Sets the list of List-Unsubscribe urls.
Definition mailinglist.cpp:423
MessageCore::MailingList::helpUrls
QList< QUrl > helpUrls() const
Returns the list of List-Help urls.
Definition mailinglist.cpp:450
MessageCore::MailingList::handler
Handler handler() const
Returns the handler for the mailing list.
Definition mailinglist.cpp:386
MessageCore::MailingList::archivedAtUrls
QList< QUrl > archivedAtUrls() const
Returns the Archived-At url.
Definition mailinglist.cpp:498
MessageCore::MailingList::writeConfig
void writeConfig(KConfigGroup &group) const
Saves the configuration for the mailing list to the config group.
Definition mailinglist.cpp:519
MessageCore::MailingList::setArchiveUrls
void setArchiveUrls(const QList< QUrl > &urls)
Sets the list of List-Archive urls.
Definition mailinglist.cpp:455
MessageCore::MailingList::postUrls
QList< QUrl > postUrls() const
Returns the list of List-Post urls.
Definition mailinglist.cpp:402
MessageCore::MailingList::setArchivedAtUrls
void setArchivedAtUrls(const QList< QUrl > &url)
Sets the Archived-At url.
Definition mailinglist.cpp:487
MessageCore::MailingList::ownerUrls
QList< QUrl > ownerUrls() const
Returns the list of List-Owner urls.
Definition mailinglist.cpp:482
MessageCore::MailingList::id
QString id() const
Returns the id of the mailing list.
Definition mailinglist.cpp:514
MessageCore::MailingList::Owner
@ Owner
List-Owner header exists.
Definition mailinglist.h:53
MessageCore::MailingList::Id
@ Id
List-ID header exists.
Definition mailinglist.h:52
MessageCore::MailingList::Archive
@ Archive
List-Archive header exists.
Definition mailinglist.h:51
MessageCore::MailingList::Help
@ Help
List-Help header exists.
Definition mailinglist.h:50
MessageCore::MailingList::ArchivedAt
@ ArchivedAt
Archive-At header exists.
Definition mailinglist.h:54
MessageCore::MailingList::Unsubscribe
@ Unsubscribe
List-Unsubscribe header exists.
Definition mailinglist.h:49
MessageCore::MailingList::None
@ None
No mailing list fields exist.
Definition mailinglist.h:46
MessageCore::MailingList::Subscribe
@ Subscribe
List-Subscribe header exists.
Definition mailinglist.h:48
MessageCore::MailingList::Post
@ Post
List-Post header exists.
Definition mailinglist.h:47
MessageCore::MailingList::setSubscribeUrls
void setSubscribeUrls(const QList< QUrl > &urls)
Sets the list of List-Subscribe urls.
Definition mailinglist.cpp:407
MessageCore::MailingList::features
Features features() const
Returns the features the mailing list supports.
Definition mailinglist.cpp:376
MessageCore::MailingList::operator=
MailingList & operator=(const MailingList &other)
Overwrites this mailing list with an other mailing list.
Definition mailinglist.cpp:358
MessageCore::MailingList::readConfig
void readConfig(const KConfigGroup &group)
Restores the configuration for the mailing list from the config group.
Definition mailinglist.cpp:584
MessageCore::MailingList::setOwnerUrls
void setOwnerUrls(const QList< QUrl > &urls)
Sets the list of List-Owner urls.
Definition mailinglist.cpp:471
MessageCore::MailingList::unsubscribeUrls
QList< QUrl > unsubscribeUrls() const
Returns the list of List-Unsubscribe urls.
Definition mailinglist.cpp:434
MessageCore::MailingList::subscribeUrls
QList< QUrl > subscribeUrls() const
Returns the list of List-Subscribe urls.
Definition mailinglist.cpp:418
MessageCore::MailingList::setPostUrls
void setPostUrls(const QList< QUrl > &urls)
Sets the list of List-Post urls.
Definition mailinglist.cpp:391
start
Q_SCRIPTABLE QString start(QString train="")
KStandardShortcut::end
const QList< QKeySequence > & end()
QList::append
void append(QList< T > &&value)
QList::empty
bool empty() const const
QList::isEmpty
bool isEmpty() const const
QString::clear
void clear()
QString::indexOf
qsizetype indexOf(QChar ch, qsizetype from, Qt::CaseSensitivity cs) const const
QString::isEmpty
bool isEmpty() const const
QString::isNull
bool isNull() const const
QString::left
QString left(qsizetype n) const const
QString::length
qsizetype length() const const
QString::mid
QString mid(qsizetype position, qsizetype n) const const
QString::truncate
void truncate(qsizetype position)
QUrl::fromStringList
QList< QUrl > fromStringList(const QStringList &urls, ParsingMode mode)
QUrl::toStringList
QStringList toStringList(const QList< QUrl > &urls, FormattingOptions options)
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