Utils: Consolidate port parsing methods

Change-Id: I137e9faa2c5f18e9ade0e2c59d73811d682abf13
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: <github-actions-qt-creator@cristianadam.eu>

src/libs/utils/port.cpp

@@ -25,8 +25,46 @@
 
 #include "port.h"
 
+#include "stringutils.h"
+
 /*! \class Utils::Port
 
   \brief The Port class implements a wrapper around a 16 bit port number
   to be used in conjunction with IP addresses.
 */
+
+namespace Utils {
+
+QList<Port> Port::parseFromSedOutput(const QByteArray &output)
+{
+    QList<Port> ports;
+    const QList<QByteArray> portStrings = output.split('\n');
+    for (const QByteArray &portString : portStrings) {
+        if (portString.size() != 4)
+            continue;
+        bool ok;
+        const Utils::Port port(portString.toInt(&ok, 16));
+        if (ok) {
+            if (!ports.contains(port))
+                ports << port;
+        } else {
+            qWarning("%s: Unexpected string '%s' is not a port.",
+                     Q_FUNC_INFO, portString.data());
+        }
+    }
+    return ports;
+}
+
+QList<Port> Port::parseFromNetstatOutput(const QByteArray &output)
+{
+    QList<Port> ports;
+    const QList<QByteArray> lines = output.split('\n');
+    for (const QByteArray &line : lines) {
+        const Port port(Utils::parseUsedPortFromNetstatOutput(line));
+        if (port.isValid() && !ports.contains(port))
+            ports.append(port);
+    }
+    return ports;
+}
+
+} // Utils