Tell PApplet where the proper sketch home is when running an unsaved,…

… modified sketch.

Fixes jdf/Processing.py-Bugs#65, and has the excellent bonus
effect of not copying enormous data files on modified, unsaved sketches.

Base - Sketch Runner First.launch

@@ -14,12 +14,13 @@
 <booleanAttribute key="org.eclipse.jdt.launching.ATTR_USE_START_ON_FIRST_THREAD" value="true"/>
 <listAttribute key="org.eclipse.jdt.launching.CLASSPATH">
 <listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry containerPath=&quot;org.eclipse.jdt.launching.JRE_CONTAINER&quot; javaProject=&quot;processing-app&quot; path=&quot;1&quot; type=&quot;4&quot;/&gt;&#10;"/>
-<listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry path=&quot;3&quot; projectName=&quot;processing.py&quot; type=&quot;1&quot;/&gt;&#10;"/>
 <listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry path=&quot;3&quot; projectName=&quot;processing-app&quot; type=&quot;1&quot;/&gt;&#10;"/>
 <listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry internalArchive=&quot;/processing-app/lib/ant.jar&quot; path=&quot;3&quot; type=&quot;2&quot;/&gt;&#10;"/>
 <listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry internalArchive=&quot;/processing-app/lib/ant-launcher.jar&quot; path=&quot;3&quot; type=&quot;2&quot;/&gt;&#10;"/>
 <listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry path=&quot;3&quot; projectName=&quot;processing-core&quot; type=&quot;1&quot;/&gt;&#10;"/>
 <listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry id=&quot;org.eclipse.jdt.launching.classpathentry.defaultClasspath&quot;&gt;&#10;&lt;memento exportedEntriesOnly=&quot;false&quot; project=&quot;processing-app&quot;/&gt;&#10;&lt;/runtimeClasspathEntry&gt;&#10;"/>
+<listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry path=&quot;3&quot; projectName=&quot;processing.py&quot; type=&quot;1&quot;/&gt;&#10;"/>
+<listEntry value="&lt;?xml version=&quot;1.0&quot; encoding=&quot;UTF-8&quot; standalone=&quot;no&quot;?&gt;&#10;&lt;runtimeClasspathEntry internalArchive=&quot;/processing.py/buildtime/lib/java/guava-17.0.jar&quot; path=&quot;3&quot; type=&quot;2&quot;/&gt;&#10;"/>
 </listAttribute>
 <booleanAttribute key="org.eclipse.jdt.launching.DEFAULT_CLASSPATH" value="false"/>
 <stringAttribute key="org.eclipse.jdt.launching.MAIN_TYPE" value="processing.app.Base"/>

runtime/src/jycessing/PAppletJythonDriver.java

@@ -236,11 +236,10 @@ private static String maybeMakeFriendlyMessage(final String message) {
     return message;
   }
 
-  public PAppletJythonDriver(final InteractiveConsole interp, final String sketchPath,
+  public PAppletJythonDriver(final InteractiveConsole interp, final String pySketchPath,
       final String programText) {
     this.programText = programText;
-    this.pySketchPath = sketchPath;
-    this.sketchPath = new File(sketchPath).getParent();
+    this.pySketchPath = pySketchPath;
     this.mode = ACTIVE_METHOD_DEF.matcher(programText).find() ? Mode.DRAW_LOOP : Mode.STATIC;
     Runner.log("Mode: ", mode.name());
     this.builtins = (PyStringMap)interp.getSystemState().getBuiltins();
@@ -960,10 +959,10 @@ public void mouseDragged(final MouseEvent e) {
     wrapMouseVariables();
     mouseDraggedFunc.invoke(e);
   }
-  
+
   @Override
-  public void mouseWheel(final MouseEvent e){
-    if (mouseWheelMeth != null){
+  public void mouseWheel(final MouseEvent e) {
+    if (mouseWheelMeth != null) {
       wrapMouseVariables();
       mouseWheelMeth.__call__(Py.java2py(e));
     }

runtime/src/jycessing/mode/PyEditor.java

@@ -9,8 +9,6 @@
 import java.awt.event.WindowEvent;
 import java.io.File;
 import java.io.IOException;
-import java.nio.file.DirectoryIteratorException;
-import java.nio.file.DirectoryStream;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.util.UUID;
@@ -228,27 +226,17 @@ public void handleExportApplication() {
   }
 
   /**
-   * Save the current state of the sketch into a temp dir, and return
+   * Save the current state of the sketch code into a temp dir, and return
    * the created directory.
    * @return a new directory containing a saved version of the current
-   * (presumably modified) sketch.
+   * (presumably modified) sketch code.
    * @throws IOException 
    */
   private Path createTempSketch() throws IOException {
     final Path tmp = Files.createTempDirectory(sketch.getName());
     for (final SketchCode code : sketch.getCode()) {
       Files.write(tmp.resolve(code.getFileName()), code.getProgram().getBytes("utf-8"));
     }
-    final Path sketchFolder = sketch.getFolder().toPath();
-    try (final DirectoryStream<Path> stream = Files.newDirectoryStream(sketchFolder)) {
-      for (final Path entry : stream) {
-        if (!mode.canEdit(entry.toFile())) {
-          IOUtil.copy(entry, tmp);
-        }
-      }
-    } catch (final DirectoryIteratorException ex) {
-      throw ex.getCause();
-    }
     return tmp;
   }
 
@@ -280,6 +268,7 @@ private void runSketch(final RunMode mode) {
           new SketchInfo.Builder().sketchName(sketch.getName()).runMode(mode)
               .addLibraryDir(Base.getContentFile("modes/java/libraries"))
               .addLibraryDir(Base.getSketchbookLibrariesFolder())
+              .sketchHome(sketch.getFolder().getAbsoluteFile())
               .mainSketchFile(new File(sketchPath).getAbsoluteFile())
               .code(sketch.getCode(0).getProgram()).codeFileNames(codeFileNames)
               .libraryPolicy(LibraryPolicy.SELECTIVE);

runtime/src/jycessing/mode/RunMode.java

@@ -35,7 +35,7 @@ public String[] args(final SketchInfo info) {
   abstract public String[] args(SketchInfo info);
 
   private static String pathArg(final SketchInfo info) {
-    return PApplet.ARGS_SKETCH_FOLDER + "=" + info.mainSketchFile.getParent();
+    return PApplet.ARGS_SKETCH_FOLDER + "=" + info.sketchHome.getAbsolutePath();
   }
 
 }

runtime/src/jycessing/mode/run/SketchInfo.java

@@ -15,6 +15,11 @@ public class SketchInfo implements Serializable {
   public final RunMode runMode;
   public final List<File> libraryDirs;
 
+  // This may be different from the directory containing mainSketchFile,
+  // because the sketch may have been temporarily copied into a temp
+  // folder to make unsaved changes to source available.
+  public final File sketchHome;
+
   public final File mainSketchFile;
 
   public final String sketchName;
@@ -25,11 +30,13 @@ public class SketchInfo implements Serializable {
   public final LibraryPolicy libraryPolicy;
 
   private SketchInfo(final String sketchName, final RunMode runMode, final List<File> libDirs,
-      final File mainSketchFile, final String code, final String[] codeFileNames,
-      final Point editorLoc, final Point sketchLoc, final LibraryPolicy libraryPolicy) {
+      final File sketchHome, final File mainSketchFile, final String code,
+      final String[] codeFileNames, final Point editorLoc, final Point sketchLoc,
+      final LibraryPolicy libraryPolicy) {
     this.sketchName = sketchName;
     this.runMode = runMode;
     this.libraryDirs = Collections.unmodifiableList(libDirs);
+    this.sketchHome = sketchHome;
     this.mainSketchFile = mainSketchFile;
     this.code = code;
     this.codeFileNames = codeFileNames;
@@ -42,16 +49,20 @@ public static class Builder {
     private String sketchName;
     private RunMode runMode;
     private final List<File> libDirs = new ArrayList<>();
-    private File sketch;
+    private File sketchHome;
+    private File mainSketchFile;
     private String code;
     private String[] codeFileNames;
     private Point editorLoc;
     private Point sketchLoc;
     private LibraryPolicy libraryPolicy;
 
     public SketchInfo build() {
-      return new SketchInfo(sketchName, runMode, libDirs, sketch, code, codeFileNames, editorLoc,
-          sketchLoc, libraryPolicy);
+      if (sketchHome == null) {
+        sketchHome = mainSketchFile.getParentFile();
+      }
+      return new SketchInfo(sketchName, runMode, libDirs, sketchHome, mainSketchFile, code,
+          codeFileNames, editorLoc, sketchLoc, libraryPolicy);
     }
 
     public Builder sketchName(final String sketchName) {
@@ -69,8 +80,13 @@ public Builder addLibraryDir(final File dir) {
       return this;
     }
 
-    public Builder mainSketchFile(final File sketch) {
-      this.sketch = sketch;
+    public Builder sketchHome(final File sketchHome) {
+      this.sketchHome = sketchHome;
+      return this;
+    }
+
+    public Builder mainSketchFile(final File mainSketchFile) {
+      this.mainSketchFile = mainSketchFile;
       return this;
     }