Version 1.5

Add $freePort macros. Closes #2

META-INF/plugin.xml

@@ -1,7 +1,7 @@
 <idea-plugin version="2">
     <id>org.turbanov.execution.cmd</id>
     <name>RunInCmd</name>
-    <version>1.4</version>
+    <version>1.5</version>
     <vendor email="[email protected]" url="https://github.com/turbanoff/RunInCmdPlugin">Turbanov Andrey</vendor>
 
     <description><![CDATA[
@@ -12,6 +12,14 @@
     <!--Add change notes here.<br>-->
     <!--<em>most HTML tags may be used</em>-->
     <change-notes><![CDATA[
+        <h3>1.5</h3>
+        <ul>
+            <li>
+                Added $freePort macros available in "To add" options. Plugin will replace it with some free port.<br>
+                This is very useful when you want to debug application launched via this plugin.<br>
+                Just add <div style="font-family:monospace">-agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=$freePort</div> to "To add VM options".
+            </li>
+        </ul>
         <h3>1.4</h3>
         <ul>
             <li>Fix run inside 2016.x IDEA terminal</li>

runInCmdPlugin.iml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <module type="PLUGIN_MODULE" version="4">
   <component name="DevKit.ModuleBuildProperties" url="file://$MODULE_DIR$/META-INF/plugin.xml" />
-  <component name="NewModuleRootManager" LANGUAGE_LEVEL="JDK_1_6" inherit-compiler-output="true">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
     <exclude-output />
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/src" isTestSource="false" />

src/org/turbanov/execution/cmd/InCmdConfigurable.java

@@ -10,6 +10,7 @@
 
 import javax.swing.*;
 import java.awt.*;
+import java.util.Objects;
 
 /**
  * @author Andrey Turbanov
@@ -23,6 +24,8 @@ public class InCmdConfigurable implements Configurable  {
     private JTextArea toAddProgramOptions;
     private JTextArea toRemoveProgramOptions;
     private JCheckBox runInTerminal;
+    private SpinnerNumberModel freePortSpinnerModel;
+    private JCheckBox findFreePort;
 
     public InCmdConfigurable(Project project) {
         myProject = project;
@@ -59,19 +62,32 @@ public JComponent createComponent() {
 
         runInTerminal = new JCheckBox("Run inside IDEA Terminal", myState.isRunInsideTerminal);
 
+        Box bottomBox = Box.createHorizontalBox();
+        freePortSpinnerModel = new SpinnerNumberModel(60000, 1024, 65535, 1);
+        JSpinner freePortSpinner = new JSpinner(freePortSpinnerModel);
+        findFreePort = new JCheckBox("Try to find free port");
+        findFreePort.setToolTipText("At start plugin will try to find free port\n" +
+                "This port will be available as $freePort macros in program/VM options");
+        bottomBox.add(findFreePort);
+        bottomBox.add(LabeledComponent.create(freePortSpinner, "Start value to check"));
+
         JPanel result = new JPanel(new BorderLayout());
         result.add(runInTerminal, BorderLayout.PAGE_START);
         result.add(mainBox, BorderLayout.CENTER);
+        result.add(bottomBox, BorderLayout.PAGE_END);
         return result;
     }
 
     @Override
     public boolean isModified() {
-        return !toAddVmOptions.getText().equals(myState.toAddVmOptions)
-            || !toRemoveVmOptions.getText().equals(myState.toRemoveVmOptions)
-            || !toAddProgramOptions.getText().equals(myState.toAddProgramOptions)
-            || !toRemoveProgramOptions.getText().equals(myState.toRemoveProgramOptions)
-            || runInTerminal.isSelected() != myState.isRunInsideTerminal;
+        boolean simpleModified = !toAddVmOptions.getText().equals(myState.toAddVmOptions)
+                || !toRemoveVmOptions.getText().equals(myState.toRemoveVmOptions)
+                || !toAddProgramOptions.getText().equals(myState.toAddProgramOptions)
+                || !toRemoveProgramOptions.getText().equals(myState.toRemoveProgramOptions)
+                || runInTerminal.isSelected() != myState.isRunInsideTerminal;
+        if (simpleModified) return true;
+        Integer currentValue = findFreePort.isSelected() ? freePortSpinnerModel.getNumber().intValue() : null;
+        return !Objects.equals(currentValue, myState.startPort);
     }
 
     @Override
@@ -82,6 +98,7 @@ public void apply() throws ConfigurationException {
         state.toAddProgramOptions = toAddProgramOptions.getText().trim();
         state.toRemoveProgramOptions = toRemoveProgramOptions.getText().trim();
         state.isRunInsideTerminal = runInTerminal.isSelected();
+        state.startPort = findFreePort.isSelected() ? freePortSpinnerModel.getNumber().intValue() : null;
         ServiceManager.getService(myProject, OptionsPatchConfiguration.class).loadState(state);
     }
 
@@ -92,6 +109,12 @@ public void reset() {
         toAddProgramOptions.setText(myState.toAddProgramOptions);
         toRemoveProgramOptions.setText(myState.toRemoveProgramOptions);
         runInTerminal.setSelected(myState.isRunInsideTerminal);
+        if (myState.startPort == null) {
+            findFreePort.setSelected(false);
+        } else {
+            findFreePort.setSelected(true);
+            freePortSpinnerModel.setValue(myState.startPort);
+        }
     }
 
     @Override

src/org/turbanov/execution/cmd/InCmdRunner.java

@@ -29,6 +29,7 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.net.ServerSocket;
 import java.nio.charset.Charset;
 import java.util.HashSet;
 import java.util.List;
@@ -70,8 +71,8 @@ protected RunContentDescriptor doExecute(@NotNull RunProfileState runProfileStat
         LOG.info("Old command line: " + oldCommandLine);
 
         OptionsPatchConfiguration options = ServiceManager.getService(environment.getProject(), OptionsPatchConfiguration.class);
-        patchParameterList(javaParameters.getVMParametersList(), options.toAddVmOptions, options.toRemoveVmOptions);
-        patchParameterList(javaParameters.getProgramParametersList(), options.toAddProgramOptions, options.toRemoveProgramOptions);
+        patchParameterList(javaParameters.getVMParametersList(), options.toAddVmOptions, options.toRemoveVmOptions, options.startPort);
+        patchParameterList(javaParameters.getProgramParametersList(), options.toAddProgramOptions, options.toRemoveProgramOptions, options.startPort);
 
         String workingDirectory = state.getJavaParameters().getWorkingDirectory();
 
@@ -148,8 +149,14 @@ private static void clear(PathsList classPath) {
         }
     }
 
-    private static void patchParameterList(ParametersList parametersList, String toAdd, String toRemove) {
+    private static void patchParameterList(ParametersList parametersList, String toAdd, String toRemove, Integer startPort) {
         if (!toAdd.isEmpty()) {
+            if (startPort != null && toAdd.contains("$freePort")) {
+                Integer freePort = findFreePort(startPort);
+                if (freePort != null) {
+                    toAdd = toAdd.replace("$freePort", freePort.toString());
+                }
+            }
             String[] toAddParams = ParametersList.parse(toAdd);
             for (String toAddParam : toAddParams) {
                 if (!parametersList.hasParameter(toAddParam)) {
@@ -169,4 +176,25 @@ private static void patchParameterList(ParametersList parametersList, String toA
             }
         }
     }
+
+    //Adapted from org.jetbrains.jps.incremental.java.JavaBuilder.findFreePort()
+    private static Integer findFreePort(int startFrom) {
+        for (int i = 0; i < 100; i++) {
+            try {
+                int tryPort = startFrom + i;
+                if (tryPort < 0) {
+                    return null;
+                }
+                try (ServerSocket serverSocket = new ServerSocket(tryPort)) {
+                    // calling close() immediately after opening socket may result that socket is not closed
+                    synchronized (serverSocket) {
+                        serverSocket.wait(1);
+                    }
+                }
+                return tryPort;
+            } catch (IOException | InterruptedException ignored) {
+            }
+        }
+        return null;
+    }
 }

src/org/turbanov/execution/cmd/OptionsPatchConfiguration.java

@@ -17,6 +17,7 @@ public class OptionsPatchConfiguration implements PersistentStateComponent<Optio
     public String toAddProgramOptions = "";
     public String toRemoveProgramOptions = "";
     public boolean isRunInsideTerminal = false;
+    public Integer startPort;
 
     @NotNull
     @Override
@@ -31,5 +32,6 @@ public void loadState(OptionsPatchConfiguration state) {
         toAddProgramOptions = state.toAddProgramOptions;
         toRemoveProgramOptions = state.toRemoveProgramOptions;
         isRunInsideTerminal = state.isRunInsideTerminal;
+        startPort = state.startPort;
     }
 }