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// SPDX-FileCopyrightText: 2022 Gleb Popov <arrowd@FreeBSD.org>
// SPDX-License-Identifier: BSD-3-Clause
#include "craftruntime.h"
#include "debug_craft.h"
#include <QFileInfo>
#include <QStandardPaths>
#include <QProcess>
#include <KProcess>
using namespace KDevelop;
namespace {
auto craftSetupHelperRelativePath()
{
return QLatin1String{"/craft/bin/CraftSetupHelper.py"};
}
}
CraftRuntime::CraftRuntime(const QString& craftRoot, const QString& pythonExecutable)
: m_craftRoot(craftRoot)
, m_pythonExecutable(pythonExecutable)
{
Q_ASSERT(!pythonExecutable.isEmpty());
m_watcher.addPath(craftRoot + craftSetupHelperRelativePath());
connect(&m_watcher, &QFileSystemWatcher::fileChanged, this, [this](const QString& path) {
if (QFileInfo::exists(path)) {
refreshEnvCache();
if (!m_watcher.files().contains(path)) {
m_watcher.addPath(path);
}
}
});
refreshEnvCache();
}
QString CraftRuntime::name() const
{
return QStringLiteral("Craft [%1]").arg(m_craftRoot);
}
QString CraftRuntime::findCraftRoot(Path startingPoint)
{
// CraftRuntime doesn't handle remote directories, because it needs
// to check file existence in the findCraftRoot() function
if (startingPoint.isRemote())
return QString();
QString craftRoot;
while (true) {
bool craftSettingsIniExists = QFileInfo::exists(startingPoint.path() + QLatin1String("/etc/CraftSettings.ini"));
bool craftSetupHelperExists = QFileInfo::exists(startingPoint.path() + craftSetupHelperRelativePath());
if (craftSettingsIniExists && craftSetupHelperExists) {
craftRoot = startingPoint.path();
break;
}
if (!startingPoint.hasParent())
break;
startingPoint = startingPoint.parent();
}
return QFileInfo(craftRoot).canonicalFilePath();
}
QString CraftRuntime::findPython()
{
// Craft requires Python 3.6+, not any "python3", but
// - If the user set up Craft already, there is a high probability that
// "python3" is a correct one
// - We are running only CraftSetupHelper.py, not the whole Craft, so
// the 3.6+ requirement might be not relevant for this case.
// So just search for "python3" and hope for the best.
return QStandardPaths::findExecutable(QStringLiteral("python3"));
}
void CraftRuntime::setEnabled(bool enabled)
{
if (enabled)
qCDebug(CRAFT) << "Enabling Craft runtime at" << m_craftRoot << "with" << m_pythonExecutable;
}
void CraftRuntime::refreshEnvCache()
{
QProcess python;
python.start(m_pythonExecutable,
QStringList{m_craftRoot + craftSetupHelperRelativePath(), QStringLiteral("--getenv")});
python.waitForFinished(5000);
if (python.error() != QProcess::UnknownError) {
if (python.error() == QProcess::Timedout)
qCWarning(CRAFT) << "CraftSetupHelper.py execution timed out";
else
qCWarning(CRAFT) << "CraftSetupHelper.py execution failed:" << python.error() << python.errorString();
return;
}
if (python.exitCode()) {
qCWarning(CRAFT) << "CraftSetupHelper.py execution failed with code" << python.exitCode();
return;
}
m_envCache.clear();
const QList<QByteArray> output = python.readAllStandardOutput().split('\n');
for (const auto& line : output) {
// line contains things like "VAR=VALUE"
int equalsSignIndex = line.indexOf('=');
if (equalsSignIndex == -1)
continue;
QByteArray varName = line.left(equalsSignIndex);
QByteArray value = line.mid(equalsSignIndex + 1);
m_envCache.emplace_back(varName, value);
}
}
QByteArray CraftRuntime::getenv(const QByteArray& varname) const
{
auto it = std::find_if(m_envCache.begin(), m_envCache.end(), [&varname](const EnvironmentVariable& envVar) {
return envVar.name == varname;
});
return it != m_envCache.end() ? it->value : QByteArray();
}
QString CraftRuntime::findExecutable(const QString& executableName) const
{
auto runtimePaths = QString::fromLocal8Bit(getenv(QByteArrayLiteral("PATH"))).split(QLatin1Char(':'));
return QStandardPaths::findExecutable(executableName, runtimePaths);
}
Path CraftRuntime::pathInHost(const Path& runtimePath) const
{
return runtimePath;
}
Path CraftRuntime::pathInRuntime(const Path& localPath) const
{
return localPath;
}
void CraftRuntime::startProcess(KProcess* process) const
{
QStringList program = process->program();
QString executableInRuntime = findExecutable(program.constFirst());
if (executableInRuntime != program.constFirst()) {
program.first() = std::move(executableInRuntime);
process->setProgram(program);
}
setEnvironmentVariables(process);
process->start();
}
void CraftRuntime::startProcess(QProcess* process) const
{
QString executableInRuntime = findExecutable(process->program());
process->setProgram(executableInRuntime);
setEnvironmentVariables(process);
process->start();
}
void CraftRuntime::setEnvironmentVariables(QProcess* process) const
{
auto env = process->processEnvironment();
for (const auto& envVar : m_envCache) {
env.insert(QString::fromLocal8Bit(envVar.name), QString::fromLocal8Bit(envVar.value));
}
process->setProcessEnvironment(env);
}
EnvironmentVariable::EnvironmentVariable(const QByteArray& name, const QByteArray& value)
: name(name.trimmed())
, value(value)
{
}
#include "moc_craftruntime.cpp"
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