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falkon/src/lib/tools/qztools.cpp

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/* ============================================================
* QupZilla - WebKit based browser
* Copyright (C) 2010-2013 David Rosca <nowrep@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
* ============================================================ */
#include "qztools.h"
#include "mainapplication.h"
#include <QTextDocument>
#include <QDateTime>
#include <QByteArray>
#include <QPixmap>
#include <QPainter>
#include <QBuffer>
#include <QFile>
#include <QDir>
#include <QWidget>
#include <QApplication>
#include <QSslCertificate>
#include <QDesktopWidget>
#include <QUrl>
#include <QIcon>
#include <QFileIconProvider>
#include <QTemporaryFile>
#include <QHash>
#include <QSysInfo>
#include <QProcess>
#include <QMessageBox>
#if QT_VERSION >= 0x050000
#include <QUrlQuery>
#include <qpa/qplatformnativeinterface.h>
#else
#include <QX11Info>
#endif
#if defined(QZ_WS_X11) && !defined(NO_X11)
#include <X11/Xlib.h>
#include <X11/Xutil.h>
#endif
#ifdef Q_OS_WIN
#include <windows.h>
#endif
#ifdef Q_OS_MAC
#include <CoreServices/CoreServices.h>
#endif
QByteArray QzTools::pixmapToByteArray(const QPixmap &pix)
{
QByteArray bytes;
QBuffer buffer(&bytes);
buffer.open(QIODevice::WriteOnly);
if (pix.save(&buffer, "PNG")) {
return buffer.buffer().toBase64();
}
return QByteArray();
}
QPixmap QzTools::pixmapFromByteArray(const QByteArray &data)
{
QPixmap image;
QByteArray bArray = QByteArray::fromBase64(data);
image.loadFromData(bArray);
return image;
}
QString QzTools::readAllFileContents(const QString &filename)
{
QFile file(filename);
if (file.open(QFile::ReadOnly)) {
QString a = QString::fromUtf8(file.readAll());
file.close();
return a;
}
return QString();
}
void QzTools::centerWidgetOnScreen(QWidget* w)
{
const QRect screen = QApplication::desktop()->screenGeometry();
const QRect &size = w->geometry();
w->move((screen.width() - size.width()) / 2, (screen.height() - size.height()) / 2);
}
// Very, very, very simplified QDialog::adjustPosition from qdialog.cpp
void QzTools::centerWidgetToParent(QWidget* w, QWidget* parent)
{
if (!parent || !w) {
return;
}
QPoint p;
parent = parent->window();
QPoint pp = parent->mapToGlobal(QPoint(0, 0));
p = QPoint(pp.x() + parent->width() / 2, pp.y() + parent->height() / 2);
p = QPoint(p.x() - w->width() / 2, p.y() - w->height() / 2 - 20);
w->move(p);
}
bool QzTools::removeFile(const QString &fullFileName)
{
QFile f(fullFileName);
if (f.exists()) {
return f.remove();
}
else {
return false;
}
}
void QzTools::removeDir(const QString &d)
{
QDir dir(d);
if (dir.exists()) {
const QFileInfoList list = dir.entryInfoList();
QFileInfo fi;
for (int l = 0; l < list.size(); l++) {
fi = list.at(l);
if (fi.isDir() && fi.fileName() != QLatin1String(".") && fi.fileName() != QLatin1String("..")) {
QzTools::removeDir(fi.absoluteFilePath());
}
else if (fi.isFile()) {
QzTools::removeFile(fi.absoluteFilePath());
}
}
dir.rmdir(d);
}
}
/* Finds same part of @one in @other from the beginning */
QString QzTools::samePartOfStrings(const QString &one, const QString &other)
{
int maxSize = qMin(one.size(), other.size());
if (maxSize <= 0) {
return QString();
}
int i = 0;
while (one.at(i) == other.at(i)) {
i++;
if (i == maxSize) {
break;
}
}
return one.left(i);
}
QString QzTools::urlEncodeQueryString(const QUrl &url)
{
QString returnString = url.toString(QUrl::RemoveQuery | QUrl::RemoveFragment);
if (url.hasQuery()) {
#if QT_VERSION >= 0x050000
returnString += QLatin1Char('?') + url.query(QUrl::FullyEncoded);
#else
returnString += QLatin1Char('?') + url.encodedQuery();
#endif
}
if (url.hasFragment()) {
#if QT_VERSION >= 0x050000
returnString += QLatin1Char('#') + url.fragment(QUrl::FullyEncoded);
#else
returnString += QLatin1Char('#') + url.encodedFragment();
#endif
}
returnString.replace(QLatin1Char(' '), QLatin1String("%20"));
return returnString;
}
QString QzTools::ensureUniqueFilename(const QString &name, const QString &appendFormat)
{
if (!QFile::exists(name)) {
return name;
}
QString tmpFileName = name;
int i = 1;
while (QFile::exists(tmpFileName)) {
tmpFileName = name;
int index = tmpFileName.lastIndexOf(QLatin1Char('.'));
QString appendString = appendFormat.arg(i);
if (index == -1) {
tmpFileName.append(appendString);
}
else {
tmpFileName = tmpFileName.left(index) + appendString + tmpFileName.mid(index);
}
i++;
}
return tmpFileName;
}
QString QzTools::getFileNameFromUrl(const QUrl &url)
{
QString fileName = url.toString(QUrl::RemoveFragment | QUrl::RemoveQuery | QUrl::RemoveScheme | QUrl::RemovePort);
if (fileName.endsWith(QLatin1Char('/'))) {
fileName = fileName.mid(0, fileName.length() - 1);
}
if (fileName.indexOf(QLatin1Char('/')) != -1) {
int pos = fileName.lastIndexOf(QLatin1Char('/'));
fileName = fileName.mid(pos);
fileName.remove(QLatin1Char('/'));
}
fileName = filterCharsFromFilename(fileName);
if (fileName.isEmpty()) {
fileName = filterCharsFromFilename(url.host());
}
return fileName;
}
QString QzTools::filterCharsFromFilename(const QString &name)
{
QString value = name;
value.replace(QLatin1Char('/'), QLatin1Char('-'));
value.remove(QLatin1Char('\\'));
value.remove(QLatin1Char(':'));
value.remove(QLatin1Char('*'));
value.remove(QLatin1Char('?'));
value.remove(QLatin1Char('"'));
value.remove(QLatin1Char('<'));
value.remove(QLatin1Char('>'));
value.remove(QLatin1Char('|'));
return value;
}
QString QzTools::alignTextToWidth(const QString &string, const QString &text, const QFontMetrics &metrics, int width)
{
int pos = 0;
QString returnString;
while (pos <= string.size()) {
QString part = string.mid(pos);
QString elidedLine = metrics.elidedText(part, Qt::ElideRight, width);
if (elidedLine.isEmpty()) {
break;
}
if (elidedLine.size() != part.size()) {
elidedLine = elidedLine.left(elidedLine.size() - 3);
}
if (!returnString.isEmpty()) {
returnString += text;
}
returnString += elidedLine;
pos += elidedLine.size();
}
return returnString;
}
QString QzTools::fileSizeToString(qint64 size)
{
if (size < 0) {
return QObject::tr("Unknown size");
}
double _size = size / 1024.0; // KB
if (_size < 1000) {
return QString::number(_size > 1 ? _size : 1, 'f', 0) + " KB";
}
_size /= 1024; // MB
if (_size < 1000) {
return QString::number(_size, 'f', 1) + " MB";
}
_size /= 1024; // GB
return QString::number(_size, 'f', 2) + " GB";
}
QPixmap QzTools::createPixmapForSite(const QIcon &icon, const QString &title, const QString &url)
{
const QFontMetrics fontMetrics = QApplication::fontMetrics();
const int padding = 4;
const int maxWidth = fontMetrics.width(title.length() > url.length() ? title : url) + 3 * padding + 16;
const int width = qMin(maxWidth, 150);
const int height = fontMetrics.height() * 2 + fontMetrics.leading() + 2 * padding;
QPixmap pixmap(width, height);
QPainter painter(&pixmap);
// Draw background
QPen pen(Qt::black);
pen.setWidth(1);
painter.setPen(pen);
painter.fillRect(QRect(0, 0, width, height), Qt::white);
painter.drawRect(0, 0, width - 1, height - 1);
// Draw icon
QRect iconRect(0, 0, 16 + 2 * padding, height);
icon.paint(&painter, iconRect);
// Draw title
QRect titleRect(iconRect.width(), padding, width - padding - iconRect.width(), fontMetrics.height());
painter.drawText(titleRect, fontMetrics.elidedText(title, Qt::ElideRight, titleRect.width()));
// Draw url
QRect urlRect(titleRect.x(), titleRect.bottom() + fontMetrics.leading(), titleRect.width(), titleRect.height());
painter.setPen(QApplication::palette().color(QPalette::Link));
painter.drawText(urlRect, fontMetrics.elidedText(url, Qt::ElideRight, urlRect.width()));
return pixmap;
}
QString QzTools::applyDirectionToPage(QString &pageContents)
{
QString direction = QLatin1String("ltr");
QString right_str = QLatin1String("right");
QString left_str = QLatin1String("left");
if (QApplication::isRightToLeft()) {
direction = QLatin1String("rtl");
right_str = QLatin1String("left");
left_str = QLatin1String("right");
}
pageContents.replace(QLatin1String("%DIRECTION%"), direction);
pageContents.replace(QLatin1String("%RIGHT_STR%"), right_str);
pageContents.replace(QLatin1String("%LEFT_STR%"), left_str);
return pageContents;
}
// Thanks to http://www.qtcentre.org/threads/3205-Toplevel-widget-with-rounded-corners?p=17492#post17492
QRegion QzTools::roundedRect(const QRect &rect, int radius)
{
QRegion region;
// middle and borders
region += rect.adjusted(radius, 0, -radius, 0);
region += rect.adjusted(0, radius, 0, -radius);
// top left
QRect corner(rect.topLeft(), QSize(radius * 2, radius * 2));
region += QRegion(corner, QRegion::Ellipse);
// top right
corner.moveTopRight(rect.topRight());
region += QRegion(corner, QRegion::Ellipse);
// bottom left
corner.moveBottomLeft(rect.bottomLeft());
region += QRegion(corner, QRegion::Ellipse);
// bottom right
corner.moveBottomRight(rect.bottomRight());
region += QRegion(corner, QRegion::Ellipse);
return region;
}
QIcon QzTools::iconFromFileName(const QString &fileName)
{
static QHash<QString, QIcon> iconCache;
QFileInfo tempInfo(fileName);
if (iconCache.contains(tempInfo.suffix())) {
return iconCache.value(tempInfo.suffix());
}
QFileIconProvider iconProvider;
QTemporaryFile tempFile(mApp->tempPath() + "/XXXXXX." + tempInfo.suffix());
tempFile.open();
tempInfo.setFile(tempFile.fileName());
QIcon icon(iconProvider.icon(tempInfo));
iconCache.insert(tempInfo.suffix(), icon);
return icon;
}
QString QzTools::resolveFromPath(const QString &name)
{
const QString &path = qgetenv("PATH").trimmed();
if (path.isEmpty()) {
return QString();
}
QStringList dirs = path.split(QLatin1Char(':'), QString::SkipEmptyParts);
foreach (const QString &dir, dirs) {
QDir d(dir);
if (d.exists(name)) {
return d.absoluteFilePath(name);
}
}
return QString();
}
// http://stackoverflow.com/questions/1031645/how-to-detect-utf-8-in-plain-c
bool QzTools::isUtf8(const char* string)
{
if (!string) {
return 0;
}
const unsigned char* bytes = (const unsigned char*)string;
while (*bytes) {
if ((// ASCII
bytes[0] == 0x09 ||
bytes[0] == 0x0A ||
bytes[0] == 0x0D ||
(0x20 <= bytes[0] && bytes[0] <= 0x7F)
)
) {
bytes += 1;
continue;
}
if ((// non-overlong 2-byte
(0xC2 <= bytes[0] && bytes[0] <= 0xDF) &&
(0x80 <= bytes[1] && bytes[1] <= 0xBF)
)
) {
bytes += 2;
continue;
}
if ((// excluding overlongs
bytes[0] == 0xE0 &&
(0xA0 <= bytes[1] && bytes[1] <= 0xBF) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF)
) ||
(// straight 3-byte
((0xE1 <= bytes[0] && bytes[0] <= 0xEC) ||
bytes[0] == 0xEE ||
bytes[0] == 0xEF) &&
(0x80 <= bytes[1] && bytes[1] <= 0xBF) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF)
) ||
(// excluding surrogates
bytes[0] == 0xED &&
(0x80 <= bytes[1] && bytes[1] <= 0x9F) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF)
)
) {
bytes += 3;
continue;
}
if ((// planes 1-3
bytes[0] == 0xF0 &&
(0x90 <= bytes[1] && bytes[1] <= 0xBF) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF) &&
(0x80 <= bytes[3] && bytes[3] <= 0xBF)
) ||
(// planes 4-15
(0xF1 <= bytes[0] && bytes[0] <= 0xF3) &&
(0x80 <= bytes[1] && bytes[1] <= 0xBF) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF) &&
(0x80 <= bytes[3] && bytes[3] <= 0xBF)
) ||
(// plane 16
bytes[0] == 0xF4 &&
(0x80 <= bytes[1] && bytes[1] <= 0x8F) &&
(0x80 <= bytes[2] && bytes[2] <= 0xBF) &&
(0x80 <= bytes[3] && bytes[3] <= 0xBF)
)
) {
bytes += 4;
continue;
}
return false;
}
return true;
}
// Matches domain (assumes both pattern and domain not starting with dot)
// pattern = domain to be matched
// domain = site domain
bool QzTools::matchDomain(const QString &pattern, const QString &domain)
{
if (pattern == domain) {
return true;
}
if (!domain.endsWith(pattern)) {
return false;
}
int index = domain.indexOf(pattern);
return index > 0 && domain[index - 1] == QLatin1Char('.');
}
static inline bool isQuote(const QChar &c)
{
return (c == QLatin1Char('"') || c == QLatin1Char('\''));
}
// Function splits command line into arguments
// eg. /usr/bin/foo -o test -b "bar bar" -s="sed sed"
// => '/usr/bin/foo' '-o' 'test' '-b' 'bar bar' '-s=sed sed'
QStringList QzTools::splitCommandArguments(const QString &command)
{
QString line = command.trimmed();
if (line.isEmpty()) {
return QStringList();
}
QChar SPACE(' ');
QChar EQUAL('=');
QChar BSLASH('\\');
QChar QUOTE('"');
QStringList r;
int equalPos = -1; // Position of = in opt="value"
int startPos = isQuote(line.at(0)) ? 1 : 0;
bool inWord = !isQuote(line.at(0));
bool inQuote = !inWord;
if (inQuote) {
QUOTE = line.at(0);
}
const int strlen = line.length();
for (int i = 0; i < strlen; ++i) {
const QChar &c = line.at(i);
if (inQuote && c == QUOTE && i > 0 && line.at(i - 1) != BSLASH) {
QString str = line.mid(startPos, i - startPos);
if (equalPos > -1) {
str.remove(equalPos - startPos + 1, 1);
}
inQuote = false;
if (!str.isEmpty()) {
r.append(str);
}
continue;
}
else if (!inQuote && isQuote(c)) {
inQuote = true;
QUOTE = c;
if (!inWord) {
startPos = i + 1;
}
else if (i > 0 && line.at(i - 1) == EQUAL) {
equalPos = i - 1;
}
}
if (inQuote) {
continue;
}
if (inWord && (c == SPACE || i == strlen - 1)) {
int len = (i == strlen - 1) ? -1 : i - startPos;
const QString &str = line.mid(startPos, len);
inWord = false;
if (!str.isEmpty()) {
r.append(str);
}
}
else if (!inWord && c != SPACE) {
inWord = true;
startPos = i;
}
}
// Unmatched quote
if (inQuote) {
return QStringList();
}
return r;
}
bool QzTools::startExternalProcess(const QString &executable, const QString &args)
{
const QStringList &arguments = splitCommandArguments(args);
bool success = QProcess::startDetached(executable, arguments);
if (!success) {
QString info = "<ul><li><b>%1</b>%2</li><li><b>%3</b>%4</li></ul>";
info = info.arg(QObject::tr("Executable: "), executable,
QObject::tr("Arguments: "), arguments.join(QLatin1String(" ")));
QMessageBox::critical(0, QObject::tr("Cannot start external program"),
QObject::tr("Cannot start external program! %1").arg(info));
}
return success;
}
// Qt5 migration help functions
bool QzTools::isCertificateValid(const QSslCertificate &cert)
{
#if QT_VERSION >= 0x050000
const QDateTime currentTime = QDateTime::currentDateTime();
return currentTime >= cert.effectiveDate() &&
currentTime <= cert.expiryDate() &&
!cert.isBlacklisted();
#else
return cert.isValid();
#endif
}
QString QzTools::escape(const QString &string)
{
#if QT_VERSION >= 0x050000
return string.toHtmlEscaped();
#else
return Qt::escape(string);
#endif
}
#if defined(QZ_WS_X11) && !defined(NO_X11)
void* QzTools::X11Display(const QWidget* widget)
{
Q_UNUSED(widget)
#if QT_VERSION >= 0x050000
return qApp->platformNativeInterface()->nativeResourceForWindow("display", widget->windowHandle());
#else
return QX11Info::display();
#endif
}
#endif
void QzTools::setWmClass(const QString &name, const QWidget* widget)
{
#if defined(QZ_WS_X11) && !defined(NO_X11)
QByteArray nameData = name.toUtf8();
XClassHint classHint;
classHint.res_name = const_cast<char*>(nameData.constData());
classHint.res_class = const_cast<char*>("QupZilla");
XSetClassHint((Display*)X11Display(widget), widget->winId(), &classHint);
#else
Q_UNUSED(name)
Q_UNUSED(widget)
#endif
}
QString QzTools::operatingSystem()
{
#ifdef Q_OS_MAC
QString str = "Mac OS X";
SInt32 majorVersion;
SInt32 minorVersion;
if (Gestalt(gestaltSystemVersionMajor, &majorVersion) == noErr && Gestalt(gestaltSystemVersionMinor, &minorVersion) == noErr) {
str.append(QString(" %1.%2").arg(majorVersion).arg(minorVersion));
}
return str;
#endif
#ifdef Q_OS_LINUX
return "Linux";
#endif
#ifdef Q_OS_BSD4
return "BSD 4.4";
#endif
#ifdef Q_OS_BSDI
return "BSD/OS";
#endif
#ifdef Q_OS_FREEBSD
return "FreeBSD";
#endif
#ifdef Q_OS_HPUX
return "HP-UX";
#endif
#ifdef Q_OS_HURD
return "GNU Hurd";
#endif
#ifdef Q_OS_LYNX
return "LynxOS";
#endif
#ifdef Q_OS_NETBSD
return "NetBSD";
#endif
#ifdef Q_OS_OS2
return "OS/2";
#endif
#ifdef Q_OS_OPENBSD
return "OpenBSD";
#endif
#ifdef Q_OS_OSF
return "HP Tru64 UNIX";
#endif
#ifdef Q_OS_SOLARIS
return "Sun Solaris";
#endif
#ifdef Q_OS_UNIXWARE
return "UnixWare 7 / Open UNIX 8";
#endif
#ifdef Q_OS_UNIX
return "Unix";
#endif
#ifdef Q_OS_HAIKU
return "Haiku";
#endif
#ifdef Q_OS_WIN32
QString str = "Windows";
switch (QSysInfo::windowsVersion()) {
case QSysInfo::WV_NT:
str.append(" NT");
break;
case QSysInfo::WV_2000:
str.append(" 2000");
break;
case QSysInfo::WV_XP:
str.append(" XP");
break;
case QSysInfo::WV_2003:
str.append(" XP Pro x64");
break;
case QSysInfo::WV_VISTA:
str.append(" Vista");
break;
case QSysInfo::WV_WINDOWS7:
str.append(" 7");
break;
default:
OSVERSIONINFO osvi;
ZeroMemory(&osvi, sizeof(OSVERSIONINFO));
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
GetVersionEx(&osvi);
if (osvi.dwMajorVersion == 6 && osvi.dwMinorVersion == 2) {
str.append(" 8");
}
break;
}
return str;
#endif
}