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Clementine-audio-player-Mac.../src/core/utilities.cpp

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/* This file is part of Clementine.
Copyright 2010, David Sansome <me@davidsansome.com>
Clementine 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.
Clementine 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 Clementine. If not, see <http://www.gnu.org/licenses/>.
*/
#include "timeconstants.h"
#include "utilities.h"
#include "core/logging.h"
#include "sha2.h"
#include <QApplication>
#include <QDateTime>
#include <QDesktopServices>
#include <QDir>
#include <QIODevice>
#include <QMouseEvent>
#include <QStringList>
#include <QTcpServer>
#include <QTemporaryFile>
#include <QUrl>
#include <QWidget>
#include <QXmlStreamReader>
#include <QtDebug>
#include <QtGlobal>
#include <QMetaEnum>
#if defined(Q_OS_UNIX)
# include <sys/statvfs.h>
#elif defined(Q_OS_WIN32)
# include <windows.h>
#endif
#ifdef Q_OS_LINUX
# include <sys/syscall.h>
#endif
#ifdef Q_OS_DARWIN
# include <sys/resource.h>
#endif
#ifdef Q_OS_DARWIN
# include "core/mac_startup.h"
# include "core/mac_utilities.h"
# include "core/scoped_cftyperef.h"
# include "CoreServices/CoreServices.h"
# include "IOKit/ps/IOPowerSources.h"
# include "IOKit/ps/IOPSKeys.h"
#endif
#include <boost/scoped_array.hpp>
namespace Utilities {
static QString tr(const char* str) {
return QCoreApplication::translate("", str);
}
QString PrettyTimeDelta(int seconds) {
return (seconds >= 0 ? "+" : "-") + PrettyTime(seconds);
}
QString PrettyTime(int seconds) {
// last.fm sometimes gets the track length wrong, so you end up with
// negative times.
seconds = qAbs(seconds);
int hours = seconds / (60*60);
int minutes = (seconds / 60) % 60;
seconds %= 60;
QString ret;
if (hours)
ret.sprintf("%d:%02d:%02d", hours, minutes, seconds);
else
ret.sprintf("%d:%02d", minutes, seconds);
return ret;
}
QString PrettyTimeNanosec(qint64 nanoseconds) {
return PrettyTime(nanoseconds / kNsecPerSec);
}
QString WordyTime(quint64 seconds) {
quint64 days = seconds / (60*60*24);
// TODO: Make the plural rules translatable
QStringList parts;
if (days)
parts << (days == 1 ? tr("1 day") : tr("%1 days").arg(days));
parts << PrettyTime(seconds - days*60*60*24);
return parts.join(" ");
}
QString WordyTimeNanosec(qint64 nanoseconds) {
return WordyTime(nanoseconds / kNsecPerSec);
}
QString Ago(int seconds_since_epoch, const QLocale& locale) {
const QDateTime now = QDateTime::currentDateTime();
const QDateTime then = QDateTime::fromTime_t(seconds_since_epoch);
const int days_ago = then.date().daysTo(now.date());
const QString time = then.time().toString(locale.timeFormat(QLocale::ShortFormat));
if (days_ago == 0)
return tr("Today") + " " + time;
if (days_ago == 1)
return tr("Yesterday") + " " + time;
if (days_ago <= 7)
return tr("%1 days ago").arg(days_ago);
return then.date().toString(locale.dateFormat());
}
QString PrettyFutureDate(const QDate& date) {
const QDate now = QDate::currentDate();
const int delta_days = now.daysTo(date);
if (delta_days < 0)
return QString();
if (delta_days == 0)
return tr("Today");
if (delta_days == 1)
return tr("Tomorrow");
if (delta_days <= 7)
return tr("In %1 days").arg(delta_days);
if (delta_days <= 14)
return tr("Next week");
return tr("In %1 weeks").arg(delta_days / 7);
}
QString PrettySize(quint64 bytes) {
QString ret;
if (bytes > 0) {
if (bytes <= 1000)
ret = QString::number(bytes) + " bytes";
else if (bytes <= 1000*1000)
ret.sprintf("%.1f KB", float(bytes) / 1000);
else if (bytes <= 1000*1000*1000)
ret.sprintf("%.1f MB", float(bytes) / (1000*1000));
else
ret.sprintf("%.1f GB", float(bytes) / (1000*1000*1000));
}
return ret;
}
quint64 FileSystemCapacity(const QString& path) {
#if defined(Q_OS_UNIX)
struct statvfs fs_info;
if (statvfs(path.toLocal8Bit().constData(), &fs_info) == 0)
return quint64(fs_info.f_blocks) * quint64(fs_info.f_bsize);
#elif defined(Q_OS_WIN32)
_ULARGE_INTEGER ret;
if (GetDiskFreeSpaceEx(QDir::toNativeSeparators(path).toLocal8Bit().constData(),
NULL, &ret, NULL) != 0)
return ret.QuadPart;
#endif
return 0;
}
quint64 FileSystemFreeSpace(const QString& path) {
#if defined(Q_OS_UNIX)
struct statvfs fs_info;
if (statvfs(path.toLocal8Bit().constData(), &fs_info) == 0)
return quint64(fs_info.f_bavail) * quint64(fs_info.f_bsize);
#elif defined(Q_OS_WIN32)
_ULARGE_INTEGER ret;
if (GetDiskFreeSpaceEx(QDir::toNativeSeparators(path).toLocal8Bit().constData(),
&ret, NULL, NULL) != 0)
return ret.QuadPart;
#endif
return 0;
}
QString MakeTempDir(const QString template_name) {
QString path;
{
QTemporaryFile tempfile;
if (!template_name.isEmpty())
tempfile.setFileTemplate(template_name);
tempfile.open();
path = tempfile.fileName();
}
QDir d;
d.mkdir(path);
return path;
}
void RemoveRecursive(const QString& path) {
QDir dir(path);
foreach (const QString& child, dir.entryList(QDir::NoDotAndDotDot | QDir::Dirs | QDir::Hidden))
RemoveRecursive(path + "/" + child);
foreach (const QString& child, dir.entryList(QDir::NoDotAndDotDot | QDir::Files | QDir::Hidden))
QFile::remove(path + "/" + child);
dir.rmdir(path);
}
bool CopyRecursive(const QString& source, const QString& destination) {
// Make the destination directory
QString dir_name = source.section('/', -1, -1);
QString dest_path = destination + "/" + dir_name;
QDir().mkpath(dest_path);
QDir dir(source);
foreach (const QString& child, dir.entryList(QDir::NoDotAndDotDot | QDir::Dirs)) {
if (!CopyRecursive(source + "/" + child, dest_path)) {
qLog(Warning) << "Failed to copy dir" << source + "/" + child << "to" << dest_path;
return false;
}
}
foreach (const QString& child, dir.entryList(QDir::NoDotAndDotDot | QDir::Files)) {
if (!QFile::copy(source + "/" + child, dest_path + "/" + child)) {
qLog(Warning) << "Failed to copy file" << source + "/" + child << "to" << dest_path;
return false;
}
}
return true;
}
bool Copy(QIODevice* source, QIODevice* destination) {
if (!source->open(QIODevice::ReadOnly))
return false;
if (!destination->open(QIODevice::WriteOnly))
return false;
const qint64 bytes = source->size();
boost::scoped_array<char> data(new char[bytes]);
qint64 pos = 0;
qint64 bytes_read;
do {
bytes_read = source->read(data.get() + pos, bytes - pos);
if (bytes_read == -1)
return false;
pos += bytes_read;
} while (bytes_read > 0 && pos != bytes);
pos = 0;
qint64 bytes_written;
do {
bytes_written = destination->write(data.get() + pos, bytes - pos);
if (bytes_written == -1)
return false;
pos += bytes_written;
} while (bytes_written > 0 && pos != bytes);
return true;
}
QString ColorToRgba(const QColor& c) {
return QString("rgba(%1, %2, %3, %4)")
.arg(c.red()).arg(c.green()).arg(c.blue()).arg(c.alpha());
}
QString GetConfigPath(ConfigPath config) {
switch (config) {
case Path_Root: {
#ifdef Q_OS_DARWIN
return mac::GetApplicationSupportPath() + "/" + QCoreApplication::organizationName();
#else
return QString("%1/.config/%2").arg(QDir::homePath(), QCoreApplication::organizationName());
#endif
}
break;
case Path_AlbumCovers:
return GetConfigPath(Path_Root) + "/albumcovers";
case Path_NetworkCache:
return GetConfigPath(Path_Root) + "/networkcache";
case Path_MoodbarCache:
return GetConfigPath(Path_Root) + "/moodbarcache";
case Path_GstreamerRegistry:
return GetConfigPath(Path_Root) +
QString("/gst-registry-%1-bin").arg(QCoreApplication::applicationVersion());
case Path_DefaultMusicLibrary:
#ifdef Q_OS_DARWIN
return mac::GetMusicDirectory();
#else
return QDir::homePath();
#endif
case Path_LocalSpotifyBlob:
return GetConfigPath(Path_Root) + "/spotifyblob";
default:
qFatal("%s", Q_FUNC_INFO);
return QString::null;
}
}
#ifdef Q_OS_DARWIN
qint32 GetMacVersion() {
SInt32 minor_version;
Gestalt(gestaltSystemVersionMinor, &minor_version);
return minor_version;
}
#endif // Q_OS_DARWIN
void OpenInFileBrowser(const QList<QUrl>& urls) {
QSet<QString> dirs;
foreach (const QUrl& url, urls) {
if (url.scheme() != "file") {
continue;
}
QString path = url.toLocalFile();
if (!QFile::exists(path))
continue;
const QString directory = QFileInfo(path).dir().path();
if (dirs.contains(directory))
continue;
dirs.insert(directory);
QDesktopServices::openUrl(QUrl::fromLocalFile(directory));
}
}
QByteArray Hmac(const QByteArray& key, const QByteArray& data, HashFunction method) {
const int kBlockSize = 64; // bytes
Q_ASSERT(key.length() <= kBlockSize);
QByteArray inner_padding(kBlockSize, char(0x36));
QByteArray outer_padding(kBlockSize, char(0x5c));
for (int i=0 ; i<key.length() ; ++i) {
inner_padding[i] = inner_padding[i] ^ key[i];
outer_padding[i] = outer_padding[i] ^ key[i];
}
if (Md5_Algo == method) {
return QCryptographicHash::hash(outer_padding +
QCryptographicHash::hash(inner_padding + data,
QCryptographicHash::Md5),
QCryptographicHash::Md5);
} else { // Sha256_Algo, currently default
return Sha256(outer_padding + Sha256(inner_padding + data));
}
}
QByteArray HmacSha256(const QByteArray& key, const QByteArray& data) {
return Hmac(key, data, Sha256_Algo);
}
QByteArray HmacMd5(const QByteArray& key, const QByteArray& data) {
return Hmac(key, data, Md5_Algo);
}
QByteArray Sha256(const QByteArray& data) {
SHA256_CTX context;
SHA256_Init(&context);
SHA256_Update(&context, reinterpret_cast<const u_int8_t*>(data.constData()),
data.length());
QByteArray ret(SHA256_DIGEST_LENGTH, '\0');
SHA256_Final(reinterpret_cast<u_int8_t*>(ret.data()), &context);
return ret;
}
QString PrettySize(const QSize& size) {
return QString::number(size.width()) + "x" +
QString::number(size.height());
}
void ForwardMouseEvent(const QMouseEvent* e, QWidget* target) {
QMouseEvent c(e->type(), target->mapFromGlobal(e->globalPos()),
e->globalPos(), e->button(), e->buttons(), e->modifiers());
QApplication::sendEvent(target, &c);
}
bool IsMouseEventInWidget(const QMouseEvent* e, const QWidget* widget) {
return widget->rect().contains(widget->mapFromGlobal(e->globalPos()));
}
quint16 PickUnusedPort() {
forever {
const quint16 port = 49152 + qrand() % 16384;
QTcpServer server;
if (server.listen(QHostAddress::Any, port)) {
return port;
}
}
}
void ConsumeCurrentElement(QXmlStreamReader* reader) {
int level = 1;
while (level != 0 && !reader->atEnd()) {
switch (reader->readNext()) {
case QXmlStreamReader::StartElement: ++level; break;
case QXmlStreamReader::EndElement: --level; break;
default: break;
}
}
}
bool ParseUntilElement(QXmlStreamReader* reader, const QString& name) {
while (!reader->atEnd()) {
QXmlStreamReader::TokenType type = reader->readNext();
switch (type) {
case QXmlStreamReader::StartElement:
if (reader->name() == name) {
return true;
}
break;
default:
break;
}
}
return false;
}
QDateTime ParseRFC822DateTime(const QString& text) {
// This sucks but we need it because some podcasts don't quite follow the
// spec properly - they might have 1-digit hour numbers for example.
QRegExp re("([a-zA-Z]{3}),? (\\d{1,2}) ([a-zA-Z]{3}) (\\d{4}) (\\d{1,2}):(\\d{1,2}):(\\d{1,2})");
if (re.indexIn(text) == -1)
return QDateTime();
return QDateTime(
QDate::fromString(QString("%1 %2 %3 %4").arg(re.cap(1), re.cap(3), re.cap(2), re.cap(4)), Qt::TextDate),
QTime(re.cap(5).toInt(), re.cap(6).toInt(), re.cap(7).toInt()));
}
const char* EnumToString(const QMetaObject& meta, const char* name, int value) {
int index = meta.indexOfEnumerator(name);
if (index == -1)
return "[UnknownEnum]";
QMetaEnum metaenum = meta.enumerator(index);
const char* result = metaenum.valueToKey(value);
if (result == 0)
return "[UnknownEnumValue]";
return result;
}
QStringList Prepend(const QString& text, const QStringList& list) {
QStringList ret(list);
for (int i=0 ; i<ret.count() ; ++i)
ret[i].prepend(text);
return ret;
}
QStringList Updateify(const QStringList& list) {
QStringList ret(list);
for (int i=0 ; i<ret.count() ; ++i)
ret[i].prepend(ret[i] + " = :");
return ret;
}
QString DecodeHtmlEntities(const QString& text) {
QString copy(text);
copy.replace("&amp;", "&");
copy.replace("&quot;", "\"");
copy.replace("&apos;", "'");
copy.replace("&lt;", "<");
copy.replace("&gt;", ">");
return copy;
}
int SetThreadIOPriority(IoPriority priority) {
#ifdef Q_OS_LINUX
return syscall(SYS_ioprio_set, IOPRIO_WHO_PROCESS, GetThreadId(),
4 | priority << IOPRIO_CLASS_SHIFT);
#elif defined(Q_OS_DARWIN)
return setpriority(PRIO_DARWIN_THREAD, 0,
priority == IOPRIO_CLASS_IDLE ? PRIO_DARWIN_BG : 0);
#else
return 0;
#endif
}
int GetThreadId() {
#ifdef Q_OS_LINUX
return syscall(SYS_gettid);
#else
return 0;
#endif
}
bool IsLaptop() {
#ifdef Q_OS_WIN
SYSTEM_POWER_STATUS status;
if (!GetSystemPowerStatus(&status)) {
return false;
}
return !(status.BatteryFlag & 128); // 128 = no system battery
#endif
#ifdef Q_OS_LINUX
return !QDir("/proc/acpi/battery").entryList(QDir::Dirs | QDir::NoDotAndDotDot).isEmpty();
#endif
#ifdef Q_OS_MAC
ScopedCFTypeRef<CFTypeRef> power_sources(IOPSCopyPowerSourcesInfo());
ScopedCFTypeRef<CFArrayRef> power_source_list(
IOPSCopyPowerSourcesList(power_sources.get()));
for (CFIndex i = 0; i < CFArrayGetCount(power_source_list.get()); ++i) {
CFTypeRef ps = CFArrayGetValueAtIndex(power_source_list.get(), i);
CFDictionaryRef description = IOPSGetPowerSourceDescription(
power_sources.get(), ps);
if (CFDictionaryContainsKey(description, CFSTR(kIOPSBatteryHealthKey))) {
return true;
}
}
return false;
#endif
}
} // namespace Utilities
ScopedWCharArray::ScopedWCharArray(const QString& str)
: chars_(str.length()),
data_(new wchar_t[chars_ + 1])
{
str.toWCharArray(data_.get());
data_[chars_] = '\0';
}
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