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Merge pull request #9575 from Chocobo1/python

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Fix asking to install Python
This commit is contained in:
Mike Tzou 2018-09-26 12:36:05 +08:00 committed by GitHub
commit 08df3277df
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6 changed files with 206 additions and 226 deletions
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148
src/base/preferences.cpp
View File

@ -43,7 +43,6 @@
#ifdef Q_OS_WIN
#include <shlobj.h>
#include <winreg.h>
#include <QRegularExpression>
#endif
@ -878,153 +877,6 @@ void Preferences::disableRecursiveDownload(bool disable)
}
#ifdef Q_OS_WIN
namespace
{
enum REG_SEARCH_TYPE
{
USER,
SYSTEM_32BIT,
SYSTEM_64BIT
};
QStringList getRegSubkeys(HKEY handle)
{
QStringList keys;
DWORD cSubKeys = 0;
DWORD cMaxSubKeyLen = 0;
LONG res = ::RegQueryInfoKeyW(handle, NULL, NULL, NULL, &cSubKeys, &cMaxSubKeyLen, NULL, NULL, NULL, NULL, NULL, NULL);
if (res == ERROR_SUCCESS) {
++cMaxSubKeyLen; // For null character
LPWSTR lpName = new WCHAR[cMaxSubKeyLen];
DWORD cName;
for (DWORD i = 0; i < cSubKeys; ++i) {
cName = cMaxSubKeyLen;
res = ::RegEnumKeyExW(handle, i, lpName, &cName, NULL, NULL, NULL, NULL);
if (res == ERROR_SUCCESS)
keys.push_back(QString::fromWCharArray(lpName));
}
delete[] lpName;
}
return keys;
}
QString getRegValue(HKEY handle, const QString &name = QString())
{
QString result;
DWORD type = 0;
DWORD cbData = 0;
LPWSTR lpValueName = NULL;
if (!name.isEmpty()) {
lpValueName = new WCHAR[name.size() + 1];
name.toWCharArray(lpValueName);
lpValueName[name.size()] = 0;
}
// Discover the size of the value
::RegQueryValueExW(handle, lpValueName, NULL, &type, NULL, &cbData);
DWORD cBuffer = (cbData / sizeof(WCHAR)) + 1;
LPWSTR lpData = new WCHAR[cBuffer];
LONG res = ::RegQueryValueExW(handle, lpValueName, NULL, &type, (LPBYTE)lpData, &cbData);
if (lpValueName)
delete[] lpValueName;
if (res == ERROR_SUCCESS) {
lpData[cBuffer - 1] = 0;
result = QString::fromWCharArray(lpData);
}
delete[] lpData;
return result;
}
QString pythonSearchReg(const REG_SEARCH_TYPE type)
{
HKEY hkRoot;
if (type == USER)
hkRoot = HKEY_CURRENT_USER;
else
hkRoot = HKEY_LOCAL_MACHINE;
REGSAM samDesired = KEY_READ;
if (type == SYSTEM_32BIT)
samDesired |= KEY_WOW64_32KEY;
else if (type == SYSTEM_64BIT)
samDesired |= KEY_WOW64_64KEY;
QString path;
LONG res = 0;
HKEY hkPythonCore;
res = ::RegOpenKeyExW(hkRoot, L"SOFTWARE\\Python\\PythonCore", 0, samDesired, &hkPythonCore);
if (res == ERROR_SUCCESS) {
QStringList versions = getRegSubkeys(hkPythonCore);
qDebug("Python versions nb: %d", versions.size());
versions.sort();
bool found = false;
while (!found && !versions.empty()) {
const QString version = versions.takeLast() + "\\InstallPath";
LPWSTR lpSubkey = new WCHAR[version.size() + 1];
version.toWCharArray(lpSubkey);
lpSubkey[version.size()] = 0;
HKEY hkInstallPath;
res = ::RegOpenKeyExW(hkPythonCore, lpSubkey, 0, samDesired, &hkInstallPath);
delete[] lpSubkey;
if (res == ERROR_SUCCESS) {
qDebug("Detected possible Python v%s location", qUtf8Printable(version));
path = getRegValue(hkInstallPath);
::RegCloseKey(hkInstallPath);
if (!path.isEmpty() && QDir(path).exists("python.exe")) {
qDebug("Found python.exe at %s", qUtf8Printable(path));
found = true;
}
}
}
if (!found)
path = QString();
::RegCloseKey(hkPythonCore);
}
return path;
}
}
QString Preferences::getPythonPath()
{
QString path = pythonSearchReg(USER);
if (!path.isEmpty())
return path;
path = pythonSearchReg(SYSTEM_32BIT);
if (!path.isEmpty())
return path;
path = pythonSearchReg(SYSTEM_64BIT);
if (!path.isEmpty())
return path;
// Fallback: Detect python from default locations
const QStringList dirs = QDir("C:/").entryList(QStringList("Python*"), QDir::Dirs, QDir::Name | QDir::Reversed);
foreach (const QString &dir, dirs) {
const QString path("C:/" + dir + '/');
if (QFile::exists(path + "python.exe"))
return path;
}
return QString();
}
bool Preferences::neverCheckFileAssoc() const
{
return value("Preferences/Win32/NeverCheckFileAssocation", false).toBool();

1
src/base/preferences.h
View File

@ -259,7 +259,6 @@ public:
bool recursiveDownloadDisabled() const;
void disableRecursiveDownload(bool disable = true);
#ifdef Q_OS_WIN
static QString getPythonPath();
bool neverCheckFileAssoc() const;
void setNeverCheckFileAssoc(bool check = true);
static bool isTorrentFileAssocSet();

172
src/base/utils/foreignapps.cpp
View File

@ -29,11 +29,19 @@
#include "foreignapps.h"
#if defined(Q_OS_WIN)
#include <windows.h>
#endif
#include <QCoreApplication>
#include <QProcess>
#include <QRegularExpression>
#include <QStringList>
#if defined(Q_OS_WIN)
#include <QDir>
#endif
#include "base/logger.h"
using namespace Utils::ForeignApps;
@ -69,12 +77,159 @@ namespace
return false;
}
LogMsg(QCoreApplication::translate("Utils::ForeignApps", "Python detected, version: %1").arg(info.version), Log::INFO);
LogMsg(QCoreApplication::translate("Utils::ForeignApps", "Python detected, executable name: '%1', version: %2")
.arg(info.executableName, info.version), Log::INFO);
return true;
}
return false;
}
#if defined(Q_OS_WIN)
enum REG_SEARCH_TYPE
{
USER,
SYSTEM_32BIT,
SYSTEM_64BIT
};
QStringList getRegSubkeys(const HKEY handle)
{
QStringList keys;
DWORD cSubKeys = 0;
DWORD cMaxSubKeyLen = 0;
LONG res = ::RegQueryInfoKeyW(handle, NULL, NULL, NULL, &cSubKeys, &cMaxSubKeyLen, NULL, NULL, NULL, NULL, NULL, NULL);
if (res == ERROR_SUCCESS) {
++cMaxSubKeyLen; // For null character
LPWSTR lpName = new WCHAR[cMaxSubKeyLen];
DWORD cName;
for (DWORD i = 0; i < cSubKeys; ++i) {
cName = cMaxSubKeyLen;
res = ::RegEnumKeyExW(handle, i, lpName, &cName, NULL, NULL, NULL, NULL);
if (res == ERROR_SUCCESS)
keys.push_back(QString::fromWCharArray(lpName));
}
delete[] lpName;
}
return keys;
}
QString getRegValue(const HKEY handle, const QString &name = QString())
{
QString result;
DWORD type = 0;
DWORD cbData = 0;
LPWSTR lpValueName = NULL;
if (!name.isEmpty()) {
lpValueName = new WCHAR[name.size() + 1];
name.toWCharArray(lpValueName);
lpValueName[name.size()] = 0;
}
// Discover the size of the value
::RegQueryValueExW(handle, lpValueName, NULL, &type, NULL, &cbData);
DWORD cBuffer = (cbData / sizeof(WCHAR)) + 1;
LPWSTR lpData = new WCHAR[cBuffer];
LONG res = ::RegQueryValueExW(handle, lpValueName, NULL, &type, (LPBYTE)lpData, &cbData);
if (lpValueName)
delete[] lpValueName;
if (res == ERROR_SUCCESS) {
lpData[cBuffer - 1] = 0;
result = QString::fromWCharArray(lpData);
}
delete[] lpData;
return result;
}
QString pythonSearchReg(const REG_SEARCH_TYPE type)
{
HKEY hkRoot;
if (type == USER)
hkRoot = HKEY_CURRENT_USER;
else
hkRoot = HKEY_LOCAL_MACHINE;
REGSAM samDesired = KEY_READ;
if (type == SYSTEM_32BIT)
samDesired |= KEY_WOW64_32KEY;
else if (type == SYSTEM_64BIT)
samDesired |= KEY_WOW64_64KEY;
QString path;
LONG res = 0;
HKEY hkPythonCore;
res = ::RegOpenKeyExW(hkRoot, L"SOFTWARE\\Python\\PythonCore", 0, samDesired, &hkPythonCore);
if (res == ERROR_SUCCESS) {
QStringList versions = getRegSubkeys(hkPythonCore);
qDebug("Python versions nb: %d", versions.size());
versions.sort();
bool found = false;
while (!found && !versions.empty()) {
const QString version = versions.takeLast() + "\\InstallPath";
LPWSTR lpSubkey = new WCHAR[version.size() + 1];
version.toWCharArray(lpSubkey);
lpSubkey[version.size()] = 0;
HKEY hkInstallPath;
res = ::RegOpenKeyExW(hkPythonCore, lpSubkey, 0, samDesired, &hkInstallPath);
delete[] lpSubkey;
if (res == ERROR_SUCCESS) {
qDebug("Detected possible Python v%s location", qUtf8Printable(version));
path = getRegValue(hkInstallPath);
::RegCloseKey(hkInstallPath);
if (!path.isEmpty() && QDir(path).exists("python.exe")) {
found = true;
path = QDir(path).filePath("python.exe");
}
}
}
if (!found)
path = QString();
::RegCloseKey(hkPythonCore);
}
return path;
}
QString findPythonPath()
{
QString path = pythonSearchReg(USER);
if (!path.isEmpty())
return path;
path = pythonSearchReg(SYSTEM_32BIT);
if (!path.isEmpty())
return path;
path = pythonSearchReg(SYSTEM_64BIT);
if (!path.isEmpty())
return path;
// Fallback: Detect python from default locations
const QFileInfoList dirs = QDir("C:/").entryInfoList({"Python*"}, QDir::Dirs, (QDir::Name | QDir::Reversed));
for (const QFileInfo &info : dirs) {
const QString path {info.absolutePath() + "/python.exe"};
if (QFile::exists(path))
return path;
}
return QString();
}
#endif
}
bool Utils::ForeignApps::PythonInfo::isValid() const
@ -82,13 +237,21 @@ bool Utils::ForeignApps::PythonInfo::isValid() const
return (!executableName.isEmpty() && version.isValid());
}
bool Utils::ForeignApps::PythonInfo::isSupportedVersion() const
{
const int majorVer = version.majorNumber();
return ((majorVer > 3)
|| ((majorVer == 3) && (version >= Version {3, 3, 0}))
|| ((majorVer == 2) && (version >= Version {2, 7, 9})));
}
PythonInfo Utils::ForeignApps::pythonInfo()
{
static PythonInfo pyInfo;
if (!pyInfo.isValid()) {
#if defined(Q_OS_UNIX)
// On Unix-Like Systems python2 and python3 should always exist
// https://legacy.python.org/dev/peps/pep-0394/
// https://www.python.org/dev/peps/pep-0394/
if (testPythonInstallation("python3", pyInfo))
return pyInfo;
if (testPythonInstallation("python2", pyInfo))
@ -99,6 +262,11 @@ PythonInfo Utils::ForeignApps::pythonInfo()
if (testPythonInstallation("python", pyInfo))
return pyInfo;
#if defined(Q_OS_WIN)
if (testPythonInstallation(findPythonPath(), pyInfo))
return pyInfo;
#endif
LogMsg(QCoreApplication::translate("Utils::ForeignApps", "Python not detected"), Log::INFO);
}

1
src/base/utils/foreignapps.h
View File

@ -42,6 +42,7 @@ namespace Utils
using Version = Utils::Version<quint8, 3, 1>;
bool isValid() const;
bool isSupportedVersion() const;
QString executableName;
Version version;

109
src/gui/mainwindow.cpp
View File

@ -1784,67 +1784,50 @@ void MainWindow::on_actionRSSReader_triggered()
void MainWindow::on_actionSearchWidget_triggered()
{
if (!m_hasPython && m_ui->actionSearchWidget->isChecked()) {
int majorVersion = Utils::ForeignApps::pythonInfo().version.majorNumber();
const Utils::ForeignApps::PythonInfo pyInfo = Utils::ForeignApps::pythonInfo();
// Not installed
if (!pyInfo.isValid()) {
m_ui->actionSearchWidget->setChecked(false);
Preferences::instance()->setSearchEnabled(false);
// Check if python is already in PATH
if (majorVersion > 0) {
// Prevent translators from messing with PATH
Logger::instance()->addMessage(tr("Python found in %1: %2", "Python found in PATH: /usr/local/bin:/usr/bin:/etc/bin")
.arg("PATH", qgetenv("PATH").constData()), Log::INFO);
}
#ifdef Q_OS_WIN
else if (addPythonPathToEnv()) {
majorVersion = Utils::ForeignApps::pythonInfo().version.majorNumber();
}
const QMessageBox::StandardButton buttonPressed = QMessageBox::question(this, tr("Missing Python Runtime")
, tr("Python is required to use the search engine but it does not seem to be installed.\nDo you want to install it now?")
, (QMessageBox::Yes | QMessageBox::No), QMessageBox::Yes);
if (buttonPressed == QMessageBox::Yes)
installPython();
#else
QMessageBox::information(this, tr("Missing Python Runtime")
, tr("Python is required to use the search engine but it does not seem to be installed."));
#endif
else {
QMessageBox::information(this, tr("Undetermined Python version"), tr("Couldn't determine your Python version. Search engine disabled."));
m_ui->actionSearchWidget->setChecked(false);
Preferences::instance()->setSearchEnabled(false);
return;
}
bool res = false;
// Check version requirement
if (!pyInfo.isSupportedVersion()) {
m_ui->actionSearchWidget->setChecked(false);
Preferences::instance()->setSearchEnabled(false);
if ((majorVersion == 2) || (majorVersion == 3)) {
// Check Python minimum requirement: 2.7.9 / 3.3.0
using Version = Utils::ForeignApps::PythonInfo::Version;
const Version pyVersion = Utils::ForeignApps::pythonInfo().version;
if (((majorVersion == 2) && (pyVersion < Version {2, 7, 9}))
|| ((majorVersion == 3) && (pyVersion < Version {3, 3, 0}))) {
QMessageBox::information(this, tr("Old Python Interpreter"), tr("Your Python version (%1) is outdated. Please upgrade to latest version for search engines to work.\nMinimum requirement: 2.7.9 / 3.3.0.").arg(pyVersion));
m_ui->actionSearchWidget->setChecked(false);
Preferences::instance()->setSearchEnabled(false);
return;
}
res = true;
}
if (res) {
m_hasPython = true;
}
#ifdef Q_OS_WIN
else if (QMessageBox::question(this, tr("Missing Python Interpreter"),
tr("Python is required to use the search engine but it does not seem to be installed.\nDo you want to install it now?"),
QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes) == QMessageBox::Yes) {
// Download and Install Python
installPython();
m_ui->actionSearchWidget->setChecked(false);
Preferences::instance()->setSearchEnabled(false);
return;
}
#endif
else {
#ifndef Q_OS_WIN
QMessageBox::information(this, tr("Missing Python Interpreter"), tr("Python is required to use the search engine but it does not seem to be installed."));
#endif
m_ui->actionSearchWidget->setChecked(false);
Preferences::instance()->setSearchEnabled(false);
const QMessageBox::StandardButton buttonPressed = QMessageBox::question(this, tr("Old Python Runtime")
, tr("Your Python version (%1) is outdated. Minimum requirement: 2.7.9 / 3.3.0.\nDo you want to install a newer version now?")
, (QMessageBox::Yes | QMessageBox::No), QMessageBox::Yes);
if (buttonPressed == QMessageBox::Yes)
installPython();
#else
QMessageBox::information(this, tr("Old Python Runtime")
, tr("Your Python version (%1) is outdated. Please upgrade to latest version for search engines to work.\nMinimum requirement: 2.7.9 / 3.3.0.")
.arg(pyInfo.version));
#endif
return;
}
m_hasPython = true;
m_ui->actionSearchWidget->setChecked(true);
Preferences::instance()->setSearchEnabled(true);
}
displaySearchTab(m_ui->actionSearchWidget->isChecked());
}
@ -2061,31 +2044,12 @@ void MainWindow::checkProgramUpdate()
#endif
#ifdef Q_OS_WIN
bool MainWindow::addPythonPathToEnv()
{
if (m_hasPython) return true;
QString pythonPath = Preferences::getPythonPath();
if (!pythonPath.isEmpty()) {
Logger::instance()->addMessage(tr("Python found in '%1'").arg(Utils::Fs::toNativePath(pythonPath)), Log::INFO);
// Add it to PATH envvar
QString pathEnvar = QString::fromLocal8Bit(qgetenv("PATH").constData());
if (pathEnvar.isNull())
pathEnvar = "";
pathEnvar = pythonPath + ';' + pathEnvar;
qDebug("New PATH envvar is: %s", qUtf8Printable(pathEnvar));
qputenv("PATH", Utils::Fs::toNativePath(pathEnvar).toLocal8Bit());
return true;
}
return false;
}
void MainWindow::installPython()
{
setCursor(QCursor(Qt::WaitCursor));
// Download python
const QString installerURL = ((QSysInfo::windowsVersion() >= QSysInfo::WV_VISTA)
? "https://www.python.org/ftp/python/3.5.2/python-3.5.2.exe"
? "https://www.python.org/ftp/python/3.6.6/python-3.6.6.exe"
: "https://www.python.org/ftp/python/3.4.4/python-3.4.4.msi");
Net::DownloadHandler *handler = Net::DownloadManager::instance()->download(
Net::DownloadRequest(installerURL).saveToFile(true));
@ -2123,10 +2087,7 @@ void MainWindow::pythonDownloadSuccess(const QString &url, const QString &filePa
else
Utils::Fs::forceRemove(filePath + ".msi");
// Reload search engine
m_hasPython = addPythonPathToEnv();
if (m_hasPython) {
// Make it print the version to Log
Utils::ForeignApps::pythonInfo();
if (Utils::ForeignApps::pythonInfo().isSupportedVersion()) {
m_ui->actionSearchWidget->setChecked(true);
displaySearchTab(true);
}

1
src/gui/mainwindow.h
View File

@ -201,7 +201,6 @@ private:
QIcon getSystrayIcon() const;
#endif
#ifdef Q_OS_WIN
bool addPythonPathToEnv();
void installPython();
#endif