1 files changed, 57 insertions, 0 deletions
diff --git a/src/qmltoolingsettings/qqmltoolingutils.cpp b/src/qmltoolingsettings/qqmltoolingutils.cpp
new file mode 100644
index 0000000000..1cf1602b4b
--- /dev/null
+++ b/src/qmltoolingsettings/qqmltoolingutils.cpp
@@ -0,0 +1,57 @@
+// Copyright (C) 2024 The Qt Company Ltd.
+// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
+
+#include "qqmltoolingutils_p.h"
+
+#include <QtCore/qfileinfo.h>
+#include <QtCore/qdir.h>
+
+using namespace Qt::StringLiterals;
+
+/*!
+\internal
+
+Helper utils to help QQmlTooling retrieve certain values from the environment or command line
+options.
+It helps to keep the warning messages consistent between tools like qmlls and qmllint when
+they use environment variables, for examples.
+*/
+
+void QQmlToolingUtils::warnForInvalidDirs(const QStringList &dirs, const QString &origin)
+{
+    for (const QString &path : dirs) {
+        QFileInfo info(path);
+        if (!info.exists()) {
+            qWarning().noquote().nospace()
+                    << u"Argument \"%1\" %2 does not exist."_s.arg(path, origin);
+            continue;
+        }
+        if (!info.isDir()) {
+            qWarning().noquote().nospace()
+                    << "Argument \"" << path << "\" " << origin << " is not a directory.";
+            continue;
+        }
+    }
+}
+
+QStringList
+QQmlToolingUtils::getAndWarnForInvalidDirsFromEnv(const QString &environmentVariableName)
+{
+    const QStringList envPaths = qEnvironmentVariable(environmentVariableName.toUtf8())
+                                         .split(QDir::listSeparator(), Qt::SkipEmptyParts);
+    warnForInvalidDirs(envPaths,
+                       u"from environment variable \"%1\""_s.arg(environmentVariableName));
+    return envPaths;
+}
+
+QStringList QQmlToolingUtils::getAndWarnForInvalidDirsFromOption(const QCommandLineParser &parser,
+                                                                 const QCommandLineOption &option)
+{
+    if (!parser.isSet(option))
+        return {};
+
+    const QStringList dirs = parser.values(option);
+    const QString optionName = option.names().constFirst();
+    warnForInvalidDirs(dirs, u"passed to -%1"_s.arg(optionName));
+    return dirs;
+}