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/**************************************************************************
**
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** Copyright (c) 2013 BogDan Vatra <bog_dan_ro@yahoo.com>
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of Qt Creator.
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**
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** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia.  For licensing terms and
** conditions see http://qt.digia.com/licensing.  For further information
** use the contact form at http://qt.digia.com/contact-us.
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**
** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights.  These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
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****************************************************************************/
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#include "androidconfigurations.h"
#include "androidconstants.h"
#include "ui_addnewavddialog.h"

#include <coreplugin/icore.h>
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#include <utils/hostosinfo.h>
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#include <utils/persistentsettings.h>

#include <QDateTime>
#include <QSettings>
#include <QStringList>
#include <QProcess>
#include <QFileInfo>
#include <QDirIterator>
#include <QMetaObject>

#include <QStringListModel>
#include <QMessageBox>

#if defined(_WIN32)
#include <iostream>
#include <windows.h>
#define sleep(_n) Sleep(1000 * (_n))
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#else
#include <unistd.h>
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#endif

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using namespace ProjectExplorer;
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using namespace Utils;

namespace Android {
namespace Internal {

namespace {
    const QLatin1String SettingsGroup("AndroidConfigurations");
    const QLatin1String SDKLocationKey("SDKLocation");
    const QLatin1String NDKLocationKey("NDKLocation");
    const QLatin1String NDKToolchainVersionKey("NDKToolchainVersion");
    const QLatin1String AntLocationKey("AntLocation");
    const QLatin1String ArmGdbLocationKey("GdbLocation");
    const QLatin1String ArmGdbserverLocationKey("GdbserverLocation");
    const QLatin1String X86GdbLocationKey("X86GdbLocation");
    const QLatin1String X86GdbserverLocationKey("X86GdbserverLocation");
    const QLatin1String OpenJDKLocationKey("OpenJDKLocation");
    const QLatin1String KeystoreLocationKey("KeystoreLocation");
    const QLatin1String PartitionSizeKey("PartitionSize");
    const QLatin1String ArmToolchainPrefix("arm-linux-androideabi");
    const QLatin1String X86ToolchainPrefix("x86");
    const QLatin1String ArmToolsPrefix("arm-linux-androideabi");
    const QLatin1String X86ToolsPrefix("i686-android-linux");
    const QLatin1String Unknown("unknown");
    const QLatin1String keytoolName("keytool");
    const QLatin1String jarsignerName("jarsigner");
    const QLatin1String changeTimeStamp("ChangeTimeStamp");

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    static QString sdkSettingsFileName()
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    {
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        return QString::fromLatin1("%1/android.xml")
                                           .arg(QFileInfo(Core::ICore::settings(QSettings::SystemScope)->fileName()).absolutePath());
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    }

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    bool androidDevicesLessThan(const AndroidDeviceInfo &dev1, const AndroidDeviceInfo &dev2)
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    {
        return dev1.sdk < dev2.sdk;
    }
}

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Abi::Architecture AndroidConfigurations::architectureForToolChainPrefix(const QString& toolchainprefix)
{
    if (toolchainprefix == ArmToolchainPrefix)
        return Abi::ArmArchitecture;
    if (toolchainprefix == X86ToolchainPrefix)
        return Abi::X86Architecture;
    return Abi::UnknownArchitecture;
}

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QLatin1String AndroidConfigurations::toolchainPrefix(Abi::Architecture architecture)
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{
    switch (architecture) {
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    case Abi::ArmArchitecture:
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        return ArmToolchainPrefix;
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    case Abi::X86Architecture:
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        return X86ToolchainPrefix;
    default:
        return Unknown;
    }
}

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QLatin1String AndroidConfigurations::toolsPrefix(Abi::Architecture architecture)
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{
    switch (architecture) {
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    case Abi::ArmArchitecture:
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        return ArmToolsPrefix;
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    case Abi::X86Architecture:
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        return X86ToolsPrefix;
    default:
        return Unknown;
    }
}

AndroidConfig::AndroidConfig(const QSettings &settings)
{
    // user settings
    partitionSize = settings.value(PartitionSizeKey, 1024).toInt();
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    sdkLocation = FileName::fromString(settings.value(SDKLocationKey).toString());
    ndkLocation = FileName::fromString(settings.value(NDKLocationKey).toString());
    antLocation = FileName::fromString(settings.value(AntLocationKey).toString());
    openJDKLocation = FileName::fromString(settings.value(OpenJDKLocationKey).toString());
    keystoreLocation = FileName::fromString(settings.value(KeystoreLocationKey).toString());
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    PersistentSettingsReader reader;
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    if (reader.load(FileName::fromString(sdkSettingsFileName()))
            && settings.value(changeTimeStamp).toInt() != QFileInfo(sdkSettingsFileName()).lastModified().toMSecsSinceEpoch() / 1000) {
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        // persisten settings
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        sdkLocation = FileName::fromString(reader.restoreValue(SDKLocationKey).toString());
        ndkLocation = FileName::fromString(reader.restoreValue(NDKLocationKey).toString());
        antLocation = FileName::fromString(reader.restoreValue(AntLocationKey).toString());
        openJDKLocation = FileName::fromString(reader.restoreValue(OpenJDKLocationKey).toString());
        keystoreLocation = FileName::fromString(reader.restoreValue(KeystoreLocationKey).toString());
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        // persistent settings
    }

}

AndroidConfig::AndroidConfig()
{
    partitionSize = 1024;
}

void AndroidConfig::save(QSettings &settings) const
{
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    QFileInfo fileInfo(sdkSettingsFileName());
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    if (fileInfo.exists())
        settings.setValue(changeTimeStamp, fileInfo.lastModified().toMSecsSinceEpoch() / 1000);

    // user settings
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    settings.setValue(SDKLocationKey, sdkLocation.toString());
    settings.setValue(NDKLocationKey, ndkLocation.toString());
    settings.setValue(AntLocationKey, antLocation.toString());
    settings.setValue(OpenJDKLocationKey, openJDKLocation.toString());
    settings.setValue(KeystoreLocationKey, keystoreLocation.toString());
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    settings.setValue(PartitionSizeKey, partitionSize);
}

void AndroidConfigurations::setConfig(const AndroidConfig &devConfigs)
{
    m_config = devConfigs;
    save();
    updateAvailablePlatforms();
    emit updated();
}

void AndroidConfigurations::updateAvailablePlatforms()
{
    m_availablePlatforms.clear();
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    FileName path = m_config.ndkLocation;
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    QDirIterator it(path.appendPath(QLatin1String("platforms")).toString(), QStringList() << QLatin1String("android-*"), QDir::Dirs);
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    while (it.hasNext()) {
        const QString &fileName = it.next();
        m_availablePlatforms.push_back(fileName.mid(fileName.lastIndexOf(QLatin1Char('-')) + 1).toInt());
    }
    qSort(m_availablePlatforms.begin(), m_availablePlatforms.end(), qGreater<int>());
}

QStringList AndroidConfigurations::sdkTargets(int minApiLevel) const
{
    QStringList targets;
    QProcess proc;
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    proc.start(androidToolPath().toString(), QStringList() << QLatin1String("list") << QLatin1String("target")); // list avaialbe AVDs
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    if (!proc.waitForFinished(-1)) {
        proc.terminate();
        return targets;
    }
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    while (proc.canReadLine()) {
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        const QString line = QString::fromLocal8Bit(proc.readLine().trimmed());
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        int index = line.indexOf(QLatin1String("\"android-"));
        if (index == -1)
            continue;
        QString apiLevel = line.mid(index + 1, line.length() - index - 2);
        if (apiLevel.mid(apiLevel.lastIndexOf(QLatin1Char('-')) + 1).toInt() >= minApiLevel)
            targets.push_back(apiLevel);
    }
    return targets;
}

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FileName AndroidConfigurations::adbToolPath() const
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{
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    FileName path = m_config.sdkLocation;
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    return path.appendPath(QLatin1String("platform-tools/adb" QTC_HOST_EXE_SUFFIX));
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}

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FileName AndroidConfigurations::androidToolPath() const
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{
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    if (HostOsInfo::isWindowsHost()) {
        // I want to switch from using android.bat to using an executable. All it really does is call
        // Java and I've made some progress on it. So if android.exe exists, return that instead.
        FileName path = m_config.sdkLocation;
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        path.appendPath(QLatin1String("tools/android" QTC_HOST_EXE_SUFFIX));
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        if (path.toFileInfo().exists())
            return path;
        path = m_config.sdkLocation;
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        return path.appendPath(QLatin1String("tools/android" ANDROID_BAT_SUFFIX));
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    } else {
        FileName path = m_config.sdkLocation;
        return path.appendPath(QLatin1String("tools/android"));
    }
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}

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FileName AndroidConfigurations::antToolPath() const
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{
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    if (!m_config.antLocation.isEmpty())
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        return m_config.antLocation;
    else
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        return FileName::fromString(QLatin1String("ant"));
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}

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FileName AndroidConfigurations::emulatorToolPath() const
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{
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    FileName path = m_config.sdkLocation;
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    return path.appendPath(QLatin1String("tools/emulator" QTC_HOST_EXE_SUFFIX));
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}

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FileName AndroidConfigurations::toolPath(Abi::Architecture architecture, const QString &ndkToolChainVersion) const
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{
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    FileName path = m_config.ndkLocation;
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    return path.appendPath(QString::fromLatin1("toolchains/%1-%2/prebuilt/%3/bin/%4")
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            .arg(toolchainPrefix(architecture))
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            .arg(ndkToolChainVersion)
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            .arg(ToolchainHost)
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            .arg(toolsPrefix(architecture)));
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}

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FileName AndroidConfigurations::stripPath(Abi::Architecture architecture, const QString &ndkToolChainVersion) const
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{
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    return toolPath(architecture, ndkToolChainVersion).append(QLatin1String("-strip" QTC_HOST_EXE_SUFFIX));
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}

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FileName AndroidConfigurations::readelfPath(Abi::Architecture architecture, const QString &ndkToolChainVersion) const
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{
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    return toolPath(architecture, ndkToolChainVersion).append(QLatin1String("-readelf" QTC_HOST_EXE_SUFFIX));
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}

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FileName AndroidConfigurations::gdbPath(Abi::Architecture architecture, const QString &ndkToolChainVersion) const
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{
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    return toolPath(architecture, ndkToolChainVersion).append(QLatin1String("-gdb" QTC_HOST_EXE_SUFFIX));
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}

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FileName AndroidConfigurations::openJDKPath() const
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{
    return m_config.openJDKLocation;
}

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FileName AndroidConfigurations::openJDKBinPath() const
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{
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    FileName path = m_config.openJDKLocation;
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    if (!path.isEmpty())
        return path.appendPath(QLatin1String("bin"));
    return path;
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}

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FileName AndroidConfigurations::keytoolPath() const
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{
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    return openJDKBinPath().appendPath(keytoolName);
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}

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FileName AndroidConfigurations::jarsignerPath() const
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{
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    return openJDKBinPath().appendPath(jarsignerName);
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}

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FileName AndroidConfigurations::zipalignPath() const
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{
    Utils::FileName path = m_config.sdkLocation;
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    return path.appendPath(QLatin1String("tools/zipalign" QTC_HOST_EXE_SUFFIX));
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}

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QString AndroidConfigurations::getDeployDeviceSerialNumber(int *apiLevel) const
{
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    QVector<AndroidDeviceInfo> devices = connectedDevices();
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    foreach (AndroidDeviceInfo device, devices) {
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        if (device.sdk >= *apiLevel) {
            *apiLevel = device.sdk;
            return device.serialNumber;
        }
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    }
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    return startAVD(apiLevel);
}

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QVector<AndroidDeviceInfo> AndroidConfigurations::connectedDevices(int apiLevel) const
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{
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    QVector<AndroidDeviceInfo> devices;
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    QProcess adbProc;
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    adbProc.start(adbToolPath().toString(), QStringList() << QLatin1String("devices"));
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    if (!adbProc.waitForFinished(-1)) {
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        adbProc.kill();
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        return devices;
    }
    QList<QByteArray> adbDevs = adbProc.readAll().trimmed().split('\n');
    adbDevs.removeFirst();
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    AndroidDeviceInfo dev;
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    foreach (const QByteArray &device, adbDevs) {
        dev.serialNumber = QString::fromLatin1(device.left(device.indexOf('\t')).trimmed());
        dev.sdk = getSDKVersion(dev.serialNumber);
        if (apiLevel != -1 && dev.sdk != apiLevel)
            continue;
        devices.push_back(dev);
    }
    qSort(devices.begin(), devices.end(), androidDevicesLessThan);
    return devices;
}

bool AndroidConfigurations::createAVD(int minApiLevel) const
{
    QDialog d;
    Ui::AddNewAVDDialog avdDialog;
    avdDialog.setupUi(&d);
    QStringListModel model(sdkTargets(minApiLevel));
    avdDialog.targetComboBox->setModel(&model);
    if (!model.rowCount()) {
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        QMessageBox::critical(0, tr("Error Creating AVD"),
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                              tr("Cannot create a new AVD. No sufficiently recent Android SDK available.\n"
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                                 "Please install an SDK of at least API version %1.").
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                              arg(minApiLevel));
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        return false;
    }

    QRegExp rx(QLatin1String("\\S+"));
    QRegExpValidator v(rx, 0);
    avdDialog.nameLineEdit->setValidator(&v);
    if (d.exec() != QDialog::Accepted)
        return false;
    return createAVD(avdDialog.targetComboBox->currentText(), avdDialog.nameLineEdit->text(), avdDialog.sizeSpinBox->value());
}

bool AndroidConfigurations::createAVD(const QString &target, const QString &name, int sdcardSize ) const
{
    QProcess proc;
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    proc.start(androidToolPath().toString(),
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               QStringList() << QLatin1String("create") << QLatin1String("avd")
               << QLatin1String("-a") << QLatin1String("-t") << target
               << QLatin1String("-n") << name
               << QLatin1String("-c") << QString::fromLatin1("%1M").arg(sdcardSize));
    if (!proc.waitForStarted())
        return false;
    proc.write(QByteArray("no\n"));
    if (!proc.waitForFinished(-1)) {
        proc.terminate();
        return false;
    }
    return !proc.exitCode();
}

bool AndroidConfigurations::removeAVD(const QString &name) const
{
    QProcess proc;
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    proc.start(androidToolPath().toString(),
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               QStringList() << QLatin1String("delete") << QLatin1String("avd")
               << QLatin1String("-n") << name);
    if (!proc.waitForFinished(-1)) {
        proc.terminate();
        return false;
    }
    return !proc.exitCode();
}

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QVector<AndroidDeviceInfo> AndroidConfigurations::androidVirtualDevices() const
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{
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    QVector<AndroidDeviceInfo> devices;
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    QProcess proc;
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    proc.start(androidToolPath().toString(),
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               QStringList() << QLatin1String("list") << QLatin1String("avd")); // list available AVDs
    if (!proc.waitForFinished(-1)) {
        proc.terminate();
        return devices;
    }
    QList<QByteArray> avds = proc.readAll().trimmed().split('\n');
    avds.removeFirst();
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    AndroidDeviceInfo dev;
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    for (int i = 0; i < avds.size(); i++) {
        QString line = QLatin1String(avds[i]);
        if (!line.contains(QLatin1String("Name:")))
            continue;

        dev.serialNumber = line.mid(line.indexOf(QLatin1Char(':')) + 2).trimmed();
        ++i;
        for (; i < avds.size(); ++i) {
            line = QLatin1String(avds[i]);
            if (line.contains(QLatin1String("---------")))
                break;
            if (line.contains(QLatin1String("Target:")))
                dev.sdk = line.mid(line.lastIndexOf(QLatin1Char(' '))).remove(QLatin1Char(')')).toInt();
            if (line.contains(QLatin1String("ABI:")))
                dev.cpuABI = line.mid(line.lastIndexOf(QLatin1Char(' '))).trimmed();
        }
        devices.push_back(dev);
    }
    qSort(devices.begin(), devices.end(), androidDevicesLessThan);

    return devices;
}

QString AndroidConfigurations::startAVD(int *apiLevel, const QString &name) const
{
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    QProcess *avdProcess = new QProcess();
    connect(this, SIGNAL(destroyed()), avdProcess, SLOT(deleteLater()));
    connect(avdProcess, SIGNAL(finished(int)), avdProcess, SLOT(deleteLater()));
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    QString avdName = name;
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    QVector<AndroidDeviceInfo> devices;
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    bool createAVDOnce = false;
    while (true) {
        if (avdName.isEmpty()) {
            devices = androidVirtualDevices();
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            foreach (const AndroidDeviceInfo &device, devices)
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                if (device.sdk >= *apiLevel) { // take first emulator how supports this package
                    *apiLevel = device.sdk;
                    avdName = device.serialNumber;
                    break;
                }
        }
        // if no emulators found try to create one once
        if (avdName.isEmpty() && !createAVDOnce) {
            createAVDOnce = true;
            QMetaObject::invokeMethod(const_cast<QObject*>(static_cast<const QObject*>(this)), "createAVD", Qt::AutoConnection,
                                      Q_ARG(int, *apiLevel));
        } else {
            break;
        }
    }

    if (avdName.isEmpty())// stop here if no emulators found
        return avdName;

    // start the emulator
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    avdProcess->start(emulatorToolPath().toString(),
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                        QStringList() << QLatin1String("-partition-size") << QString::number(config().partitionSize)
                        << QLatin1String("-avd") << avdName);
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    if (!avdProcess->waitForStarted(-1)) {
        delete avdProcess;
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        return QString();
    }

    // wait until the emulator is online
    QProcess proc;
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    proc.start(adbToolPath().toString(), QStringList() << QLatin1String("-e") << QLatin1String("wait-for-device"));
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    while (!proc.waitForFinished(500)) {
        if (avdProcess->waitForFinished(0)) {
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            proc.kill();
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            proc.waitForFinished(-1);
            return QString();
        }
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    }
    sleep(5);// wait for pm to start

    // workaround for stupid adb bug
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    proc.start(adbToolPath().toString(), QStringList() << QLatin1String("devices"));
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    if (!proc.waitForFinished(-1)) {
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        proc.kill();
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        return QString();
    }

    // get connected devices
    devices = connectedDevices(*apiLevel);
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    foreach (AndroidDeviceInfo device, devices)
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        if (device.sdk == *apiLevel)
            return device.serialNumber;
    // this should not happen, but ...
    return QString();
}

int AndroidConfigurations::getSDKVersion(const QString &device) const
{

    QProcess adbProc;
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    adbProc.start(adbToolPath().toString(),
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                  QStringList() << QLatin1String("-s") << device
                  << QLatin1String("shell") << QLatin1String("getprop")
                  << QLatin1String("ro.build.version.sdk"));
    if (!adbProc.waitForFinished(-1)) {
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        adbProc.kill();
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        return -1;
    }
    return adbProc.readAll().trimmed().toInt();
}

QString AndroidConfigurations::bestMatch(const QString &targetAPI) const
{
    int target = targetAPI.mid(targetAPI.lastIndexOf(QLatin1Char('-')) + 1).toInt();
    foreach (int apiLevel, m_availablePlatforms) {
        if (apiLevel <= target)
            return QString::fromLatin1("android-%1").arg(apiLevel);
    }
    return QLatin1String("android-8");
}

AndroidConfigurations &AndroidConfigurations::instance(QObject *parent)
{
    if (m_instance == 0)
        m_instance = new AndroidConfigurations(parent);
    return *m_instance;
}

void AndroidConfigurations::save()
{
    QSettings *settings = Core::ICore::instance()->settings();
    settings->beginGroup(SettingsGroup);
    m_config.save(*settings);
    settings->endGroup();
}

AndroidConfigurations::AndroidConfigurations(QObject *parent)
    : QObject(parent)
{
    load();
    updateAvailablePlatforms();
}

void AndroidConfigurations::load()
{
    QSettings *settings = Core::ICore::instance()->settings();
    settings->beginGroup(SettingsGroup);
    m_config = AndroidConfig(*settings);
    settings->endGroup();
}

AndroidConfigurations *AndroidConfigurations::m_instance = 0;

} // namespace Internal
} // namespace Android