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Initialise QBtCommandLineParameters members from environment

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This allows to pass options via environment variables. The variable name
is constructed from parameter name by transforming the name to upper
case and prefixing "QBT_".
This commit is contained in:
Eugene Shalygin
2016-05-10 14:49:19 +02:00
parent 0f746ffd5a
commit d5414631c3
2 changed files with 45 additions and 11 deletions
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52
src/app/options.cpp
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@@ -33,7 +33,10 @@
#include "options.h"
#include <iostream>
#include <QDebug>
#include <QFileInfo>
#include <QProcessEnvironment>
#ifdef Q_OS_WIN
#include <QMessageBox>
@@ -41,26 +44,56 @@
#include "base/utils/misc.h"
QBtCommandLineParameters::QBtCommandLineParameters()
namespace
{
bool isBoolEnvVarSetToTrue(const QProcessEnvironment &env, const QString &var)
{
QString val = env.value(var);
// we accept "1" and "true" (upper or lower cased) as boolean 'true' values
return (val == QLatin1String("1") || val.toUpper() == QLatin1String("TRUE"));
}
int readIntlEnvVar(const QProcessEnvironment &env, const QString &var, int defaultValue)
{
QString val = env.value(var);
if (val.isEmpty()) return defaultValue;
bool ok;
int res = val.toInt(&ok);
if (!ok) {
qDebug() << QObject::tr("Expected integer number in environment variable '%1', but got '%2'")
.arg(var).arg(val);
return defaultValue;
}
return res;
}
QString envVarNameForParameter(const char *parameterName)
{
return QLatin1String("QBT_") +
QString(QLatin1String(parameterName)).toUpper().replace(QLatin1Char('-'), QLatin1Char('_'));
}
}
QBtCommandLineParameters::QBtCommandLineParameters(const QProcessEnvironment &env)
: showHelp(false)
#ifndef Q_OS_WIN
, showVersion(false)
#endif
#ifndef DISABLE_GUI
, noSplash(false)
, noSplash(isBoolEnvVarSetToTrue(env, envVarNameForParameter("no-splash")))
#else
, shouldDaemonize(false)
, shouldDaemonize(isBoolEnvVarSetToTrue(env, envVarNameForParameter("daemon")))
#endif
, webUiPort(-1)
, profileDir()
, portableMode(false)
, configurationName()
, webUiPort(readIntlEnvVar(env, envVarNameForParameter("webui-port"), -1))
, profileDir(env.value(envVarNameForParameter("profile")))
, portableMode(isBoolEnvVarSetToTrue(env, envVarNameForParameter("portable")))
, configurationName(env.value(envVarNameForParameter("configuration")))
{
}
QBtCommandLineParameters parseCommandLine(const QStringList &args)
{
QBtCommandLineParameters result;
QBtCommandLineParameters result {QProcessEnvironment::systemEnvironment()};
for (int i = 1; i < args.count(); ++i) {
const QString &arg = args[i];
@@ -178,7 +211,7 @@ QString makeUsage(const QString &prgName)
return text;
}
void displayUsage(const QString& prgName)
void displayUsage(const QString &prgName)
{
#ifndef Q_OS_WIN
std::cout << qPrintable(makeUsage(prgName)) << std::endl;
@@ -189,4 +222,3 @@ void displayUsage(const QString& prgName)
msgBox.exec();
#endif
}