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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "pythonutils.h"
#include "pythonbuildconfiguration.h"
#include "pythonconstants.h"
#include "pythonkitaspect.h"
#include "pythonproject.h"
#include "pythonsettings.h"
#include "pythontr.h"
#include <coreplugin/messagemanager.h>
#include <coreplugin/progressmanager/processprogress.h>
#include <projectexplorer/project.h>
#include <projectexplorer/projectmanager.h>
#include <projectexplorer/target.h>
#include <utils/algorithm.h>
#include <utils/datafromprocess.h>
#include <utils/mimeutils.h>
#include <utils/qtcprocess.h>
#include <utils/synchronizedvalue.h>
#include <QReadLocker>
using namespace ProjectExplorer;
using namespace Utils;
namespace Python::Internal {
static QHash<FilePath, FilePath> &userDefinedPythonsForDocument()
{
static QHash<FilePath, FilePath> userDefines;
return userDefines;
}
FilePath detectPython(const FilePath &documentPath)
{
Project *project = documentPath.isEmpty() ? nullptr
: ProjectManager::projectForFile(documentPath);
if (!project)
project = ProjectManager::startupProject();
FilePaths dirs = Environment::systemEnvironment().path();
if (project && (project->mimeType() == Constants::C_PY_PROJECT_MIME_TYPE
|| project->mimeType() == Constants::C_PY_PROJECT_MIME_TYPE_TOML)) {
if (auto bc = qobject_cast<PythonBuildConfiguration *>(project->activeBuildConfiguration()))
return bc->python();
if (const std::optional<Interpreter> python = PythonKitAspect::python(project->activeKit()))
return python->command;
}
const FilePath userDefined = userDefinedPythonsForDocument().value(documentPath);
if (userDefined.exists())
return userDefined;
// check whether this file is inside a python virtual environment
const QList<Interpreter> venvInterpreters = PythonSettings::detectPythonVenvs(documentPath);
if (!venvInterpreters.isEmpty())
return venvInterpreters.first().command;
auto defaultInterpreter = PythonSettings::defaultInterpreter().command;
if (defaultInterpreter.exists())
return defaultInterpreter;
auto pythonFromPath = [dirs](const FilePath &toCheck) {
const FilePaths found = toCheck.searchAllInDirectories(dirs);
for (const FilePath &python : found) {
// Windows creates empty redirector files that may interfere
if (python.exists() && python.osType() == OsTypeWindows && python.fileSize() != 0)
return python;
}
return FilePath();
};
const FilePath fromPath3 = pythonFromPath("python3");
if (fromPath3.exists())
return fromPath3;
const FilePath fromPath = pythonFromPath("python");
if (fromPath.exists())
return fromPath;
return PythonSettings::interpreters().value(0).command;
}
void definePythonForDocument(const FilePath &documentPath, const FilePath &python)
{
userDefinedPythonsForDocument()[documentPath] = python;
}
static QStringList replImportArgs(const FilePath &pythonFile, ReplType type)
{
using MimeTypes = QList<MimeType>;
const MimeTypes mimeTypes = pythonFile.isEmpty() || type == ReplType::Unmodified
? MimeTypes()
: mimeTypesForFileName(pythonFile.toUrlishString());
const bool isPython = Utils::anyOf(mimeTypes, [](const MimeType &mt) {
return mt.inherits(Constants::C_PY_MIMETYPE) || mt.inherits(Constants::C_PY3_MIMETYPE);
});
if (type == ReplType::Unmodified || !isPython)
return {};
const auto import = type == ReplType::Import
? QString("import %1").arg(pythonFile.completeBaseName())
: QString("from %1 import *").arg(pythonFile.completeBaseName());
return {"-c", QString("%1; print('Running \"%1\"')").arg(import)};
}
void openPythonRepl(QObject *parent, const FilePath &file, ReplType type)
{
Q_UNUSED(parent)
static const auto workingDir = [](const FilePath &file) {
if (file.isEmpty()) {
if (Project *project = ProjectManager::startupProject())
return project->projectDirectory();
return FilePath::currentWorkingPath();
}
return file.absolutePath();
};
const FilePath pythonCommand = detectPython(file);
Process process;
process.setCommand({pythonCommand, {"-i", replImportArgs(file, type)}});
process.setWorkingDirectory(workingDir(file));
process.setTerminalMode(TerminalMode::Detached);
process.start();
if (process.error() != QProcess::UnknownError) {
Core::MessageManager::writeDisrupting(
Tr::tr((process.error() == QProcess::FailedToStart)
? "Failed to run Python (%1): \"%2\"."
: "Error while running Python (%1): \"%2\".")
.arg(process.commandLine().toUserOutput(), process.errorString()));
}
}
PythonProject *pythonProjectForFile(const FilePath &file)
{
for (Project *project : ProjectManager::projects()) {
if (auto pythonProject = qobject_cast<PythonProject *>(project)) {
if (pythonProject->isKnownFile(file))
return pythonProject;
}
}
return nullptr;
}
bool isVenvPython(const FilePath &python)
{
return python.parentDir().parentDir().pathAppended("pyvenv.cfg").exists();
}
static bool isUsableHelper(
SynchronizedValue<QHash<FilePath, bool>> *cache,
const QString &commandArg,
const FilePath &python)
{
std::optional<bool> result;
cache->read([&result, python](const QHash<FilePath, bool> &cache) {
if (auto it = cache.find(python); it != cache.end())
result = it.value();
});
if (result)
return *result;
Process process;
process.setCommand({python, {"-m", commandArg, "-h"}});
process.runBlocking();
const bool usable = process.result() == ProcessResult::FinishedWithSuccess;
cache->writeLocked()->insert(python, usable);
return usable;
}
bool venvIsUsable(const FilePath &python)
{
static SynchronizedValue<QHash<FilePath, bool>> cache;
return isUsableHelper(&cache, "venv", python);
}
bool pipIsUsable(const FilePath &python)
{
static SynchronizedValue<QHash<FilePath, bool>> cache;
return isUsableHelper(&cache, "pip", python);
}
QString pythonVersion(const FilePath &python)
{
DataFromProcess<QString>::Parameters
params({python, {"--version"}}, [](const QString &stdOut, const QString &) {
return stdOut.trimmed();
});
if (const std::optional<QString> version = DataFromProcess<QString>::getData(params))
return *version;
return {};
}
} // namespace Python::Internal
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