1 /*
2 * Cantata
3 *
4 * Copyright (c) 2011-2020 Craig Drummond <craig.p.drummond@gmail.com>
5 *
6 * ----
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; see the file COPYING. If not, write to
20 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
21 * Boston, MA 02110-1301, USA.
22 */
23
24 #include "utils.h"
25 #include "config.h"
26 #include <QFile>
27 #include <QFileInfo>
28 #include <QDir>
29 #include <QProcess>
30 #include <QApplication>
31 #include <QDateTime>
32 #include <QTime>
33 #include <QWidget>
34 #include <QStyle>
35 #include <QDesktopWidget>
36 #include <QEventLoop>
37 #include <QStandardPaths>
38 #include <QSystemTrayIcon>
39 #include <QSet>
40 #include <QUrl>
41 #ifndef _MSC_VER
42 #include <unistd.h>
43 #include <utime.h>
44 #else
45 #include <sys/utime.h>
46 #endif
47 #include <sys/types.h>
48 #include <sys/stat.h>
49 #ifndef Q_OS_WIN
50 #include <grp.h>
51 #include <pwd.h>
52 #endif
53 #include <sys/types.h>
54 #if QT_QTDBUS_FOUND && !defined Q_OS_MAC && !defined Q_OS_WIN
55 #include <QDBusConnection>
56 #include <QDBusConnectionInterface>
57 #endif
58
59 const QLatin1Char Utils::constDirSep('/');
60 const QLatin1String Utils::constDirSepStr("/");
61 const char * Utils::constDirSepCharStr="/";
62
63 static const QLatin1String constHttp("http:");
64 static const QLatin1String constHttps("https:");
65
fixPath(const QString & dir,bool ensureEndsInSlash)66 QString Utils::fixPath(const QString &dir, bool ensureEndsInSlash)
67 {
68 QString d(dir);
69
70 if (!d.isEmpty() && !d.startsWith(constHttp) && !d.startsWith(constHttps)) {
71 #ifdef Q_OS_WIN
72 // Windows shares can be \\host\share (which gets converted to //host/share)
73 // so if th epath starts with // we need to keep this double slash.
74 bool startsWithDoubleSlash=d.length()>2 && d.startsWith(QLatin1String("//"));
75 #endif
76 d.replace(QLatin1String("//"), constDirSepStr);
77 #ifdef Q_OS_WIN
78 if (startsWithDoubleSlash) { // Re add first slash
79 d=QLatin1Char('/')+d;
80 }
81 #endif
82 }
83 d.replace(QLatin1String("/./"), constDirSepStr);
84 if (ensureEndsInSlash && !d.isEmpty() && !d.endsWith(constDirSep)) {
85 d+=constDirSep;
86 }
87 return d;
88 }
89
90 #ifndef Q_OS_WIN
91 static const QLatin1String constTilda("~");
homeToTilda(const QString & s)92 QString Utils::homeToTilda(const QString &s)
93 {
94 QString hp=QDir::homePath();
95 if (s==hp) {
96 return constTilda;
97 }
98 if (s.startsWith(hp+constDirSepStr)) {
99 return constTilda+fixPath(s.mid(hp.length()), false);
100 }
101 return s;
102 }
103
tildaToHome(const QString & s)104 QString Utils::tildaToHome(const QString &s)
105 {
106 if (s==constTilda) {
107 return fixPath(QDir::homePath());
108 }
109 if (s.startsWith(constTilda+constDirSep)) {
110 return fixPath(QDir::homePath()+constDirSepStr+s.mid(1), false);
111 }
112 return s;
113 }
114 #endif
115
getDir(const QString & file,bool addSlash)116 QString Utils::getDir(const QString &file, bool addSlash)
117 {
118 bool isCueFile=file.contains("/cue:///") && file.contains("?pos=");
119 QString d(file);
120 int slashPos(d.lastIndexOf(constDirSep));
121
122 if (slashPos!=-1) {
123 d.remove(slashPos+1, d.length());
124 }
125
126 if (isCueFile) {
127 d.remove("cue:///");
128 }
129 if (!addSlash) {
130 if (d.endsWith("/")) {
131 return d.left(d.length()-1);
132 }
133 return d;
134 }
135 return fixPath(d);
136 }
137
getFile(const QString & file)138 QString Utils::getFile(const QString &file)
139 {
140 QString f(file);
141 int slashPos=f.lastIndexOf(constDirSep);
142
143 if (-1!=slashPos) {
144 f.remove(0, slashPos+1);
145 }
146
147 return f;
148 }
149
getExtension(const QString & file)150 QString Utils::getExtension(const QString &file)
151 {
152 QString f(file);
153 int dotPos=f.lastIndexOf('.');
154
155 if (-1!=dotPos) {
156 return f.mid(dotPos);
157 }
158
159 return QString();
160 }
161
changeExtension(const QString & file,const QString & extension)162 QString Utils::changeExtension(const QString &file, const QString &extension)
163 {
164 if (extension.isEmpty()) {
165 return file;
166 }
167
168 QString f(file);
169 int pos=f.lastIndexOf('.');
170 if (pos>1) {
171 f=f.left(pos+1);
172 }
173
174 if (f.endsWith('.')) {
175 return f+(extension.startsWith('.') ? extension.mid(1) : extension);
176 }
177 return f+(extension.startsWith('.') ? extension : (QChar('.')+extension));
178 }
179
isDirReadable(const QString & dir)180 bool Utils::isDirReadable(const QString &dir)
181 {
182 #ifdef Q_OS_WIN
183 if (dir.isEmpty()) {
184 return false;
185 } else {
186 QDir d(dir);
187 bool dirReadable=d.isReadable();
188 // Handle cases where dir is set to \\server\ (i.e. no shared folder is set in path)
189 if (!dirReadable && dir.startsWith(QLatin1String("//")) && d.isRoot() && (dir.length()-1)==dir.indexOf(Utils::constDirSep, 2)) {
190 dirReadable=true;
191 }
192 return dirReadable;
193 }
194 #else
195 return dir.isEmpty() ? false : QDir(dir).isReadable();
196 #endif
197 }
198
strippedText(QString s)199 QString Utils::strippedText(QString s)
200 {
201 s.remove(QString::fromLatin1("..."));
202 int i = 0;
203 while (i < s.size()) {
204 ++i;
205 if (s.at(i - 1) != QLatin1Char('&')) {
206 continue;
207 }
208
209 if (i < s.size() && s.at(i) == QLatin1Char('&')) {
210 ++i;
211 }
212 s.remove(i - 1, 1);
213 }
214 return s.trimmed();
215 }
216
stripAcceleratorMarkers(QString label)217 QString Utils::stripAcceleratorMarkers(QString label)
218 {
219 int p = 0;
220 forever {
221 p = label.indexOf('&', p);
222 if(p < 0 || p + 1 >= label.length()) {
223 break;
224 }
225
226 if(label.at(p + 1).isLetterOrNumber() || label.at(p + 1) == '&') {
227 label.remove(p, 1);
228 }
229
230 ++p;
231 }
232 return label;
233 }
234
hashParams(const QString & url)235 QMap<QString, QString> Utils::hashParams(const QString &url)
236 {
237 QMap<QString, QString> map;
238 int start=url.indexOf("#");
239 if (start>0) {
240 QStringList parts = url.mid(start+1).split("&");
241 for (const QString &p: parts) {
242 QStringList kv = p.split("=");
243 if (kv.length()>=2) {
244 QString key = kv[0];
245 kv.removeAt(0);
246 map.insert(key, QUrl::fromPercentEncoding(kv.join("=").toLatin1()));
247 } else {
248 map.insert(QString("-"), QUrl::fromPercentEncoding(p.toLatin1()));
249 }
250 }
251 }
252 return map;
253 }
254
addHashParam(const QString & url,const QString & key,const QString & val)255 QString Utils::addHashParam(const QString &url, const QString &key, const QString &val)
256 {
257 if (val.isEmpty()) {
258 return url;
259 }
260
261 return url+(url.contains('#') ? "&" : "#")+(key.isEmpty() ? "" : (key+"="))+QUrl::toPercentEncoding(val);
262 }
263
removeHash(const QString & url)264 QString Utils::removeHash(const QString &url)
265 {
266 int hash=url.indexOf('#');
267 return hash<0 ? url : url.left(hash);
268 }
269
convertPathForDisplay(const QString & path,bool isFolder)270 QString Utils::convertPathForDisplay(const QString &path, bool isFolder)
271 {
272 if (path.isEmpty() || path.startsWith(constHttp) || path.startsWith(constHttps)) {
273 return path;
274 }
275
276 QString p(path);
277 if (p.endsWith(constDirSep)) {
278 p=p.left(p.length()-1);
279 }
280 /* TODO: Display ~/Music or /home/user/Music / /Users/user/Music ???
281 p=homeToTilda(QDir::toNativeSeparators(p));
282 */
283 return QDir::toNativeSeparators(isFolder && p.endsWith(constDirSep) ? p.left(p.length()-1) : p);
284 }
285
convertPathFromDisplay(const QString & path,bool isFolder)286 QString Utils::convertPathFromDisplay(const QString &path, bool isFolder)
287 {
288 QString p=path.trimmed();
289 if (p.isEmpty()) {
290 return p;
291 }
292
293 if (p.startsWith(constHttp) || p.startsWith(constHttps)) {
294 return fixPath(p);
295 }
296 return tildaToHome(fixPath(QDir::fromNativeSeparators(p), isFolder));
297 }
298
299 #ifndef Q_OS_WIN
getGroupId(const char * groupName)300 gid_t Utils::getGroupId(const char *groupName)
301 {
302 static bool init=false;
303 static gid_t gid=0;
304
305 if (init) {
306 return gid;
307 }
308
309 init=true;
310
311 // First of all see if current group is actually 'groupName'!!!
312 gid_t egid=getegid();
313 struct group *group=getgrgid(egid);
314
315 if (group && 0==strcmp(group->gr_name, groupName)) {
316 gid=egid;
317 return gid;
318 }
319
320 // Now see if user is a member of 'groupName'
321 struct passwd *pw=getpwuid(geteuid());
322
323 if (!pw) {
324 return gid;
325 }
326
327 group=getgrnam(groupName);
328
329 if (group) {
330 for (int i=0; group->gr_mem[i]; ++i) {
331 if (0==strcmp(group->gr_mem[i], pw->pw_name)) {
332 gid=group->gr_gid;
333 return gid;
334 }
335 }
336 }
337 return gid;
338 }
339
340 /*
341 * Set file permissions.
342 * If user is a memeber of "users" group, then set file as owned by and writeable by "users" group.
343 */
setFilePerms(const QString & file,const char * groupName)344 void Utils::setFilePerms(const QString &file, const char *groupName)
345 {
346 //
347 // Clear any umask before setting file perms
348 mode_t oldMask(umask(0000));
349 gid_t gid=getGroupId(groupName);
350 QByteArray fn=QFile::encodeName(file);
351 ::chmod(fn.constData(), 0==gid ? 0644 : 0664);
352 if (0!=gid) {
353 int rv=::chown(fn.constData(), geteuid(), gid);
354 Q_UNUSED(rv)
355 }
356 // Reset umask
357 ::umask(oldMask);
358 }
359 #else
setFilePerms(const QString & file,const char * groupName)360 void Utils::setFilePerms(const QString &file, const char *groupName)
361 {
362 Q_UNUSED(file)
363 Q_UNUSED(groupName)
364 }
365 #endif
366
367 /*
368 * Create directory, and set its permissions.
369 * If user is a memeber of "audio" group, then set dir as owned by and writeable by "audio" group.
370 */
createWorldReadableDir(const QString & dir,const QString & base,const char * groupName)371 bool Utils::createWorldReadableDir(const QString &dir, const QString &base, const char *groupName)
372 {
373 #ifdef Q_OS_WIN
374 Q_UNUSED(base)
375 Q_UNUSED(groupName)
376 return makeDir(dir, 0775);
377 #else
378 //
379 // Clear any umask before dir is created
380 mode_t oldMask(umask(0000));
381 gid_t gid=base.isEmpty() ? 0 : getGroupId(groupName);
382 bool status(makeDir(dir, 0==gid ? 0755 : 0775));
383
384 if (status && 0!=gid && dir.startsWith(base)) {
385 QStringList parts=dir.mid(base.length()).split(constDirSep);
386 QString d(base);
387
388 for (const QString &p: parts) {
389 d+=constDirSep+p;
390 int rv=::chown(QFile::encodeName(d).constData(), geteuid(), gid);
391 Q_UNUSED(rv)
392 }
393 }
394 // Reset umask
395 ::umask(oldMask);
396 return status;
397 #endif
398 }
399
400 // Copied from KDE... START
401 #include <QLocale>
402 #include <fcntl.h>
403 #include <sys/stat.h>
404
405 // kde_file.h
406 #ifndef Q_OS_WIN
407 #if (defined _LFS64_LARGEFILE) && (defined _LARGEFILE64_SOURCE) && (!defined _GNU_SOURCE) && (!defined __sun)
408 #define KDE_stat ::stat64
409 #define KDE_lstat ::lstat64
410 #define KDE_struct_stat struct stat64
411 #define KDE_mkdir ::mkdir
412 #else
413 #define KDE_stat ::stat
414 #define KDE_lstat ::lstat
415 #define KDE_struct_stat struct stat
416 #define KDE_mkdir ::mkdir
417 #endif
418 #endif // Q_OS_WIN
419
420 // kstandarddirs.h
makeDir(const QString & dir,int mode)421 bool Utils::makeDir(const QString &dir, int mode)
422 {
423 // we want an absolute path
424 if (QDir::isRelativePath(dir)) {
425 return false;
426 }
427
428 #ifdef Q_OS_WIN
429 Q_UNUSED(mode)
430 return QDir().mkpath(dir);
431 #else
432 QString target = dir;
433 uint len = target.length();
434
435 // append trailing slash if missing
436 if (dir.at(len - 1) != QLatin1Char('/')) {
437 target += QLatin1Char('/');
438 }
439
440 QString base;
441 uint i = 1;
442
443 while ( i < len ) {
444 KDE_struct_stat st;
445 int pos = target.indexOf(QLatin1Char('/'), i);
446 base += target.mid(i - 1, pos - i + 1);
447 QByteArray baseEncoded = QFile::encodeName(base);
448 // bail out if we encountered a problem
449 if (KDE_stat(baseEncoded, &st) != 0) {
450 // Directory does not exist....
451 // Or maybe a dangling symlink ?
452 if (KDE_lstat(baseEncoded, &st) == 0)
453 (void)unlink(baseEncoded); // try removing
454
455 if (KDE_mkdir(baseEncoded, static_cast<mode_t>(mode)) != 0) {
456 baseEncoded.prepend( "trying to create local folder " );
457 perror(baseEncoded.constData());
458 return false; // Couldn't create it :-(
459 }
460 }
461 i = pos + 1;
462 }
463 return true;
464 #endif
465 }
466
formatByteSize(double size)467 QString Utils::formatByteSize(double size)
468 {
469 static bool useSiUnites=false;
470 static QLocale locale;
471
472 #ifndef Q_OS_WIN
473 static bool init=false;
474 if (!init) {
475 init=true;
476 const char *env=qgetenv("KDE_FULL_SESSION");
477 QString dm=env && 0==strcmp(env, "true") ? QLatin1String("KDE") : QString(qgetenv("XDG_CURRENT_DESKTOP"));
478 useSiUnites=!dm.isEmpty() && QLatin1String("KDE")!=dm;
479 }
480 #endif
481 int unit = 0;
482 double multiplier = useSiUnites ? 1000.0 : 1024.0;
483
484 while (qAbs(size) >= multiplier && unit < 3) {
485 size /= multiplier;
486 unit++;
487 }
488
489 if (useSiUnites) {
490 switch(unit) {
491 case 0: return QObject::tr("%1 B").arg(size);
492 case 1: return QObject::tr("%1 kB").arg(locale.toString(size, 'f', 1));
493 case 2: return QObject::tr("%1 MB").arg(locale.toString(size, 'f', 1));
494 default:
495 case 3: return QObject::tr("%1 GB").arg(locale.toString(size, 'f', 1));
496 }
497 } else {
498 switch(unit) {
499 case 0: return QObject::tr("%1 B").arg(size);
500 case 1: return QObject::tr("%1 KiB").arg(locale.toString(size, 'f', 1));
501 case 2: return QObject::tr("%1 MiB").arg(locale.toString(size, 'f', 1));
502 default:
503 case 3: return QObject::tr("%1 GiB").arg(locale.toString(size, 'f', 1));
504 }
505 }
506 }
507
508 #if defined Q_OS_WIN
509 #define KPATH_SEPARATOR ';'
510 // #define KDIR_SEPARATOR '\\' /* faster than QDir::separator() */
511 #else
512 #define KPATH_SEPARATOR ':'
513 // #define KDIR_SEPARATOR '/' /* faster than QDir::separator() */
514 #endif
515
equalizePath(QString & str)516 static inline QString equalizePath(QString &str)
517 {
518 #ifdef Q_OS_WIN
519 // filter pathes through QFileInfo to have always
520 // the same case for drive letters
521 QFileInfo f(str);
522 if (f.isAbsolute())
523 return f.absoluteFilePath();
524 else
525 #endif
526 return str;
527 }
528
tokenize(QStringList & tokens,const QString & str,const QString & delim)529 static void tokenize(QStringList &tokens, const QString &str, const QString &delim)
530 {
531 const int len = str.length();
532 QString token;
533
534 for(int index = 0; index < len; index++) {
535 if (delim.contains(str[index])) {
536 tokens.append(equalizePath(token));
537 token.clear();
538 } else {
539 token += str[index];
540 }
541 }
542 if (!token.isEmpty()) {
543 tokens.append(equalizePath(token));
544 }
545 }
546
547 #ifdef Q_OS_WIN
executableExtensions()548 static QStringList executableExtensions()
549 {
550 QStringList ret = QString::fromLocal8Bit(qgetenv("PATHEXT")).split(QLatin1Char(';'));
551 if (!ret.contains(QLatin1String(".exe"), Qt::CaseInsensitive)) {
552 // If %PATHEXT% does not contain .exe, it is either empty, malformed, or distorted in ways that we cannot support, anyway.
553 ret.clear();
554 ret << QLatin1String(".exe")
555 << QLatin1String(".com")
556 << QLatin1String(".bat")
557 << QLatin1String(".cmd");
558 }
559 return ret;
560 }
561 #endif
562
systemPaths(const QString & pstr)563 static QStringList systemPaths(const QString &pstr)
564 {
565 QStringList tokens;
566 QString p = pstr;
567
568 if( p.isEmpty() ) {
569 p = QString::fromLocal8Bit( qgetenv( "PATH" ) );
570 }
571
572 QString delimiters(QLatin1Char(KPATH_SEPARATOR));
573 delimiters += QLatin1Char('\b');
574 tokenize( tokens, p, delimiters );
575
576 QStringList exePaths;
577
578 // split path using : or \b as delimiters
579 for( int i = 0; i < tokens.count(); i++ ) {
580 exePaths << /*KShell::tildeExpand(*/ tokens[ i ] /*)*/; // TODO
581 }
582
583 return exePaths;
584 }
585
586 #ifdef Q_OS_MAC
getBundle(const QString & path)587 static QString getBundle(const QString &path)
588 {
589 //kDebug(180) << "getBundle(" << path << ", " << ignore << ") called";
590 QFileInfo info;
591 QString bundle = path;
592 bundle += QLatin1String(".app/Contents/MacOS/") + bundle.section(QLatin1Char('/'), -1);
593 info.setFile( bundle );
594 FILE *file;
595 if ((file = fopen(info.absoluteFilePath().toUtf8().constData(), "r"))) {
596 fclose(file);
597 struct stat _stat;
598 if ((stat(info.absoluteFilePath().toUtf8().constData(), &_stat)) < 0) {
599 return QString();
600 }
601 if ( _stat.st_mode & S_IXUSR ) {
602 if ( ((_stat.st_mode & S_IFMT) == S_IFREG) || ((_stat.st_mode & S_IFMT) == S_IFLNK) ) {
603 //kDebug(180) << "getBundle(): returning " << bundle;
604 return bundle;
605 }
606 }
607 }
608 return QString();
609 }
610 #endif
611
checkExecutable(const QString & path)612 static QString checkExecutable( const QString& path )
613 {
614 #ifdef Q_OS_MAC
615 QString bundle = getBundle( path );
616 if ( !bundle.isEmpty() ) {
617 //kDebug(180) << "findExe(): returning " << bundle;
618 return bundle;
619 }
620 #endif
621 QFileInfo info( path );
622 QFileInfo orig = info;
623 #if defined(Q_OS_DARWIN) || defined(Q_OS_MAC)
624 FILE *file;
625 if ((file = fopen(orig.absoluteFilePath().toUtf8().constData(), "r"))) {
626 fclose(file);
627 struct stat _stat;
628 if ((stat(orig.absoluteFilePath().toUtf8().constData(), &_stat)) < 0) {
629 return QString();
630 }
631 if ( _stat.st_mode & S_IXUSR ) {
632 if ( ((_stat.st_mode & S_IFMT) == S_IFREG) || ((_stat.st_mode & S_IFMT) == S_IFLNK) ) {
633 orig.makeAbsolute();
634 return orig.filePath();
635 }
636 }
637 }
638 return QString();
639 #else
640 if( info.exists() && info.isSymLink() )
641 info = QFileInfo( info.canonicalFilePath() );
642 if( info.exists() && info.isExecutable() && info.isFile() ) {
643 // return absolute path, but without symlinks resolved in order to prevent
644 // problems with executables that work differently depending on name they are
645 // run as (for example gunzip)
646 orig.makeAbsolute();
647 return orig.filePath();
648 }
649 //kDebug(180) << "checkExecutable(): failed, returning empty string";
650 return QString();
651 #endif
652 }
653
findExe(const QString & appname,const QString & pstr)654 QString Utils::findExe(const QString &appname, const QString &pstr)
655 {
656 #ifdef Q_OS_WIN
657 QStringList executable_extensions = executableExtensions();
658 if (!executable_extensions.contains(appname.section(QLatin1Char('.'), -1, -1, QString::SectionIncludeLeadingSep), Qt::CaseInsensitive)) {
659 QString found_exe;
660 for (const QString& extension: executable_extensions) {
661 found_exe = findExe(appname + extension, pstr);
662 if (!found_exe.isEmpty()) {
663 return found_exe;
664 }
665 }
666 return QString();
667 }
668 #endif
669
670 const QStringList exePaths = systemPaths( pstr );
671 for (QStringList::ConstIterator it = exePaths.begin(); it != exePaths.end(); ++it) {
672 QString p = (*it) + QLatin1Char('/');
673 p += appname;
674
675 QString result = checkExecutable(p);
676 if (!result.isEmpty()) {
677 return result;
678 }
679 }
680
681 return QString();
682 }
683 // Copied from KDE... END
684
formatDuration(const quint32 totalseconds)685 QString Utils::formatDuration(const quint32 totalseconds)
686 {
687 //Get the days,hours,minutes and seconds out of the total seconds
688 quint32 days = totalseconds / 86400;
689 quint32 rest = totalseconds - (days * 86400);
690 quint32 hours = rest / 3600;
691 rest = rest - (hours * 3600);
692 quint32 minutes = rest / 60;
693 quint32 seconds = rest - (minutes * 60);
694
695 //Convert hour,minutes and seconds to a QTime for easier parsing
696 QTime time(hours, minutes, seconds);
697
698 return 0==days
699 ? time.toString("h:mm:ss")
700 : QString("%1:%2").arg(days).arg(time.toString("hh:mm:ss"));
701 }
702
formatTime(const quint32 seconds,bool zeroIsUnknown)703 QString Utils::formatTime(const quint32 seconds, bool zeroIsUnknown)
704 {
705 if (0==seconds && zeroIsUnknown) {
706 return QObject::tr("Unknown");
707 }
708
709 static const quint32 constHour=60*60;
710 if (seconds>constHour) {
711 return Utils::formatDuration(seconds);
712 }
713
714 QString result(QString::number(floor(seconds / 60.0))+QChar(':'));
715 if (seconds % 60 < 10) {
716 result += "0";
717 }
718 return result+QString::number(seconds % 60);
719 }
720
cleanPath(const QString & p)721 QString Utils::cleanPath(const QString &p)
722 {
723 QString path(p);
724 while (path.contains("//")) {
725 path.replace("//", constDirSepStr);
726 }
727 return fixPath(path);
728 }
729
userDir(const QString & mainDir,const QString & sub,bool create)730 static QString userDir(const QString &mainDir, const QString &sub, bool create)
731 {
732 QString dir=mainDir;
733 if (!sub.isEmpty()) {
734 dir+=sub;
735 }
736 dir=Utils::cleanPath(dir);
737 QDir d(dir);
738 return d.exists() || (create && d.mkpath(dir)) ? dir : QString();
739 }
740
dataDir(const QString & sub,bool create)741 QString Utils::dataDir(const QString &sub, bool create)
742 {
743 #if defined Q_OS_WIN || defined Q_OS_MAC
744
745 return userDir(QStandardPaths::writableLocation(QStandardPaths::DataLocation)+constDirSep, sub, create);
746
747 #else
748
749 static QString location;
750 if (location.isEmpty()) {
751 location=QStandardPaths::writableLocation(QStandardPaths::DataLocation);
752 if (QCoreApplication::organizationName()==QCoreApplication::applicationName()) {
753 location=location.replace(QCoreApplication::organizationName()+Utils::constDirSep+QCoreApplication::applicationName(),
754 QCoreApplication::applicationName());
755 }
756 }
757 return userDir(location+constDirSep, sub, create);
758
759 #endif
760 }
761
cacheDir(const QString & sub,bool create)762 QString Utils::cacheDir(const QString &sub, bool create)
763 {
764 #if defined Q_OS_WIN || defined Q_OS_MAC
765
766 return userDir(QStandardPaths::writableLocation(QStandardPaths::CacheLocation)+constDirSep, sub, create);
767
768 #else
769
770 static QString location;
771 if (location.isEmpty()) {
772 location=QStandardPaths::writableLocation(QStandardPaths::CacheLocation);
773 if (QCoreApplication::organizationName()==QCoreApplication::applicationName()) {
774 location=location.replace(QCoreApplication::organizationName()+Utils::constDirSep+QCoreApplication::applicationName(),
775 QCoreApplication::applicationName());
776 }
777 }
778 return userDir(location+constDirSep, sub, create);
779
780 #endif
781 }
782
systemDir(const QString & sub)783 QString Utils::systemDir(const QString &sub)
784 {
785 #if defined Q_OS_WIN
786 return fixPath(QCoreApplication::applicationDirPath()+constDirSep+(sub.isEmpty() ? QString() : (sub+constDirSep)));
787 #elif defined Q_OS_MAC
788 return fixPath(QCoreApplication::applicationDirPath()+QLatin1String("/../Resources/")+(sub.isEmpty() ? QString() : (sub+constDirSep)));
789 #else
790 return fixPath(QString(SHARE_INSTALL_PREFIX"/")+QCoreApplication::applicationName()+constDirSep+(sub.isEmpty() ? QString() : (sub+constDirSep)));
791 #endif
792 }
793
helper(const QString & app)794 QString Utils::helper(const QString &app)
795 {
796 #if defined Q_OS_WIN
797 return fixPath(QCoreApplication::applicationDirPath())+app+QLatin1String(".exe");
798 #elif defined Q_OS_MAC
799 return fixPath(QCoreApplication::applicationDirPath())+app;
800 #else
801 // Check for helpers in same folder as main exe, so that can test dev versions without install.
802 QString local = fixPath(QCoreApplication::applicationDirPath())+app;
803 if (QFile::exists(local)) {
804 return local;
805 }
806 return fixPath(QString(INSTALL_PREFIX "/" LINUX_LIB_DIR "/")+QCoreApplication::applicationName()+constDirSep)+app;
807 #endif
808 }
809
moveFile(const QString & from,const QString & to)810 bool Utils::moveFile(const QString &from, const QString &to)
811 {
812 return !from.isEmpty() && !to.isEmpty() && from!=to && QFile::exists(from) && !QFile::exists(to) && QFile::rename(from, to);
813 }
814
moveDir(const QString & from,const QString & to)815 void Utils::moveDir(const QString &from, const QString &to)
816 {
817 if (from.isEmpty() || to.isEmpty() || from==to) {
818 return;
819 }
820
821 QDir f(from);
822 if (!f.exists()) {
823 return;
824 }
825
826 QDir t(to);
827 if (!t.exists()) {
828 return;
829 }
830
831 QFileInfoList files=f.entryInfoList(QStringList() << "*", QDir::Files|QDir::Dirs|QDir::NoDotAndDotDot);
832 for (const QFileInfo &file: files) {
833 if (file.isDir()) {
834 QString dest=to+file.fileName()+constDirSep;
835 if (!QDir(dest).exists()) {
836 t.mkdir(file.fileName());
837 }
838 moveDir(from+file.fileName()+constDirSep, dest);
839 } else {
840 QFile::rename(from+file.fileName(), to+file.fileName());
841 }
842 }
843
844 f.cdUp();
845 f.rmdir(from);
846 }
847
clearOldCache(const QString & sub,int maxAge)848 void Utils::clearOldCache(const QString &sub, int maxAge)
849 {
850 if (sub.isEmpty()) {
851 return;
852 }
853
854 QString d=cacheDir(sub, false);
855 if (d.isEmpty()) {
856 return;
857 }
858
859 QDir dir(d);
860 if (dir.exists()) {
861 QFileInfoList files=dir.entryInfoList(QDir::Files|QDir::NoDotAndDotDot);
862 if (files.count()) {
863 QDateTime now=QDateTime::currentDateTime();
864 for (const QFileInfo &f: files) {
865 if (f.lastModified().daysTo(now)>maxAge) {
866 QFile::remove(f.absoluteFilePath());
867 }
868 }
869 }
870 }
871 }
872
touchFile(const QString & fileName)873 void Utils::touchFile(const QString &fileName)
874 {
875 ::utime(QFile::encodeName(fileName).constData(), nullptr);
876 }
877
smallFontFactor(const QFont & f)878 double Utils::smallFontFactor(const QFont &f)
879 {
880 double sz=f.pointSizeF();
881 if (sz<=8.5) {
882 return 1.0;
883 }
884 if (sz<=9.0) {
885 return 0.9;
886 }
887 return 0.85;
888 }
889
smallFont(QFont f)890 QFont Utils::smallFont(QFont f)
891 {
892 f.setPointSizeF(f.pointSizeF()*smallFontFactor(f));
893 return f;
894 }
895
layoutSpacing(QWidget * w)896 int Utils::layoutSpacing(QWidget *w)
897 {
898 int spacing=(w ? w->style() : qApp->style())->layoutSpacing(QSizePolicy::DefaultType, QSizePolicy::DefaultType, Qt::Vertical);
899 if (spacing<0) {
900 spacing=scaleForDpi(4);
901 }
902 return spacing;
903 }
904
screenDpiScale()905 double Utils::screenDpiScale()
906 {
907 static double scaleFactor=-1.0;
908 if (scaleFactor<0) {
909 QWidget *dw=QApplication::desktop();
910 if (!dw) {
911 return 1.0;
912 }
913 scaleFactor=dw->logicalDpiX()>120 ? qMin(qMax(dw->logicalDpiX()/96.0, 1.0), 4.0) : 1.0;
914 }
915 return scaleFactor;
916 }
917
limitedHeight(QWidget * w)918 bool Utils::limitedHeight(QWidget *w)
919 {
920 static bool init=false;
921 static bool limited=false;
922 if (!init) {
923 limited=!qgetenv("CANTATA_NETBOOK").isEmpty();
924 if (!limited) {
925 QDesktopWidget *dw=QApplication::desktop();
926 if (dw) {
927 limited=dw->availableGeometry(w).size().height()<=800;
928 }
929 }
930 }
931 return limited;
932 }
933
resizeWindow(QWidget * w,bool preserveWidth,bool preserveHeight)934 void Utils::resizeWindow(QWidget *w, bool preserveWidth, bool preserveHeight)
935 {
936 QWidget *window=w ? w->window() : nullptr;
937 if (window) {
938 QSize was=window->size();
939 QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
940 window->setMinimumSize(QSize(0, 0));
941 window->adjustSize();
942 QSize now=window->size();
943 window->setMinimumSize(now);
944 if (preserveWidth && preserveHeight) {
945 window->resize(qMax(was.width(), now.width()), qMax(was.height(), now.height()));
946 } else if (preserveWidth) {
947 window->resize(qMax(was.width(), now.width()), now.height());
948 } else if (preserveHeight) {
949 window->resize(now.width(), qMax(was.height(), now.height()));
950 }
951 }
952 }
953
currentDe()954 Utils::Desktop Utils::currentDe()
955 {
956 #if !defined Q_OS_WIN && !defined Q_OS_MAC
957 static int de=-1;
958 if (-1==de) {
959 de=Other;
960 QSet<QByteArray> desktop=qgetenv("XDG_CURRENT_DESKTOP").toLower().split(':').toSet();
961 if (desktop.contains("unity")) {
962 de=Unity;
963 } else if (desktop.contains("kde")) {
964 de=KDE;
965 } else if (desktop.contains("gnome") || desktop.contains("pantheon")) {
966 de=Gnome;
967 } else {
968 QByteArray kde=qgetenv("KDE_FULL_SESSION");
969 if ("true"==kde) {
970 de=KDE;
971 }
972 }
973 }
974 return (Utils::Desktop)de;
975 #endif
976 return Other;
977 }
978
useSystemTray()979 bool Utils::useSystemTray()
980 {
981 #if defined Q_OS_MAC
982 return false;
983 #elif defined Q_OS_WIN
984 return true;
985 #elif QT_QTDBUS_FOUND
986 return (Gnome==currentDe() || Unity==currentDe())
987 ? QDBusConnection::sessionBus().interface()->isServiceRegistered("org.kde.StatusNotifierWatcher")
988 : QSystemTrayIcon::isSystemTrayAvailable();
989 #else
990 return Gnome!=currentDe() && Unity!=currentDe() && QSystemTrayIcon::isSystemTrayAvailable();
991 #endif
992 }
993
buildPath(const QRectF & r,double radius)994 QPainterPath Utils::buildPath(const QRectF &r, double radius)
995 {
996 QPainterPath path;
997 double diameter(radius*2);
998
999 path.moveTo(r.x()+r.width(), r.y()+r.height()-radius);
1000 path.arcTo(r.x()+r.width()-diameter, r.y(), diameter, diameter, 0, 90);
1001 path.arcTo(r.x(), r.y(), diameter, diameter, 90, 90);
1002 path.arcTo(r.x(), r.y()+r.height()-diameter, diameter, diameter, 180, 90);
1003 path.arcTo(r.x()+r.width()-diameter, r.y()+r.height()-diameter, diameter, diameter, 270, 90);
1004 return path;
1005 }
1006
clampColor(const QColor & col)1007 QColor Utils::clampColor(const QColor &col)
1008 {
1009 static const int constMin=64;
1010 static const int constMax=240;
1011
1012 if (col.value()<constMin) {
1013 return QColor(constMin, constMin, constMin);
1014 } else if (col.value()>constMax) {
1015 return QColor(constMax, constMax, constMax);
1016 }
1017 return col;
1018 }
1019
monoIconColor()1020 QColor Utils::monoIconColor()
1021 {
1022 return clampColor(QApplication::palette().color(QPalette::Active, QPalette::WindowText));
1023 }
1024
1025 #ifdef Q_OS_WIN
1026 // This is down here, because windows.h includes ALL windows stuff - and we get conflicts with MessageBox :-(
1027 #include <windows.h>
1028 #endif
1029
raiseWindow(QWidget * w)1030 void Utils::raiseWindow(QWidget *w)
1031 {
1032 if (!w) {
1033 return;
1034 }
1035
1036 #ifdef Q_OS_WIN
1037 ::SetWindowPos(reinterpret_cast<HWND>(w->effectiveWinId()), HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
1038 ::SetWindowPos(reinterpret_cast<HWND>(w->effectiveWinId()), HWND_NOTOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_SHOWWINDOW);
1039 #elif !defined Q_OS_WIN
1040 bool wasHidden=w->isHidden();
1041 #endif
1042
1043 w->raise();
1044 w->showNormal();
1045 w->activateWindow();
1046 #ifdef Q_OS_MAC
1047 w->raise();
1048 #endif
1049 #if !defined Q_OS_WIN && !defined Q_OS_MAC
1050 // This section seems to be required for compiz, so that MPRIS.Raise actually shows the window, and not just highlight launcher.
1051 QString wmctrl=Utils::findExe(QLatin1String("wmctrl"));
1052 if (!wmctrl.isEmpty()) {
1053 if (wasHidden) {
1054 QApplication::processEvents(QEventLoop::ExcludeUserInputEvents);
1055 }
1056 QProcess::execute(wmctrl, QStringList() << QLatin1String("-i") << QLatin1String("-a") << QString::number(w->effectiveWinId()));
1057 }
1058 #endif
1059 }
1060
1061