add wasm builds; requires emsdk path

Source/Heavy/HeavyExportDialog.cpp

@@ -22,6 +22,7 @@
 #include "DPFExporter.h"
 #include "DaisyExporter.h"
 #include "PdExporter.h"
+#include "WASMExporter.h"
 
 class ExporterSettingsPanel : public Component
     , private ListBoxModel {
@@ -39,7 +40,8 @@ class ExporterSettingsPanel : public Component
         "C++ Code",
         "Electro-Smith Daisy",
         "DPF Audio Plugin",
-        "Pd External"
+        "Pd External",
+        "JS / WebAssembly"
     };
 
     ExporterSettingsPanel(PluginEditor* editor, ExportingProgressView* exportingView)
@@ -48,6 +50,7 @@ class ExporterSettingsPanel : public Component
         addChildComponent(views.add(new DaisyExporter(editor, exportingView)));
         addChildComponent(views.add(new DPFExporter(editor, exportingView)));
         addChildComponent(views.add(new PdExporter(editor, exportingView)));
+        addChildComponent(views.add(new WASMExporter(editor, exportingView)));
 
         addAndMakeVisible(listBox);
 
@@ -84,7 +87,7 @@ class ExporterSettingsPanel : public Component
         auto heavyState = settingsTree.getChildWithName("HeavyState");
         if (heavyState.isValid()) {
             this->setState(heavyState);
-            for (int i = 0; i < 4; i++) {
+            for (int i = 0; i < 5; i++) {
                 views[i]->blockDialog = true;
                 views[i]->setState(heavyState);
                 views[i]->blockDialog = false;
@@ -100,6 +103,7 @@ class ExporterSettingsPanel : public Component
         state.appendChild(views[1]->getState(), nullptr);
         state.appendChild(views[2]->getState(), nullptr);
         state.appendChild(views[3]->getState(), nullptr);
+        state.appendChild(views[4]->getState(), nullptr);
 
         auto settingsTree = SettingsFile::getInstance()->getValueTree();
 

Source/Heavy/WASMExporter.h

@@ -0,0 +1,96 @@
+/*
+ // Copyright (c) 2024 Timothy Schoen and Wasted Audio
+ // For information on usage and redistribution, and for a DISCLAIMER OF ALL
+ // WARRANTIES, see the file, "LICENSE.txt," in this distribution.
+ */
+
+class WASMExporter : public ExporterBase {
+public:
+
+    Value emsdkPathValue;
+
+    WASMExporter(PluginEditor* editor, ExportingProgressView* exportingView)
+        : ExporterBase(editor, exportingView)
+    {
+        PropertiesArray properties;
+        properties.add(new PropertiesPanel::EditableComponent<String>("EMSDK path", emsdkPathValue));
+
+        for (auto* property : properties) {
+            property->setPreferredHeight(28);
+        }
+
+        panel.addSection("WASM", properties);
+    }
+
+    ValueTree getState() override
+    {
+        ValueTree stateTree("WASM");
+
+        stateTree.setProperty("inputPatchValue", getValue<String>(inputPatchValue), nullptr);
+        stateTree.setProperty("projectNameValue", getValue<String>(projectNameValue), nullptr);
+        stateTree.setProperty("projectCopyrightValue", getValue<String>(projectCopyrightValue), nullptr);
+        stateTree.setProperty("emsdkPathValue", getValue<String>(emsdkPathValue), nullptr);
+
+        return stateTree;
+    }
+
+    void setState(ValueTree& stateTree) override
+    {
+        auto tree = stateTree.getChildWithName("WASM");
+        inputPatchValue = tree.getProperty("inputPatchValue");
+        projectNameValue = tree.getProperty("projectNameValue");
+        projectCopyrightValue = tree.getProperty("projectCopyrightValue");
+        emsdkPathValue = tree.getProperty("emsdkPathValue");
+    }
+
+    bool performExport(String pdPatch, String outdir, String name, String copyright, StringArray searchPaths) override
+    {
+        exportingView->showState(ExportingProgressView::Exporting);
+
+        StringArray args = { heavyExecutable.getFullPathName(), pdPatch, "-o" + outdir };
+
+        name = name.replaceCharacter('-', '_');
+        args.add("-n" + name);
+
+        if (copyright.isNotEmpty()) {
+            args.add("--copyright");
+            args.add("\"" + copyright + "\"");
+        }
+
+        auto emsdkPath = getValue<String>(emsdkPathValue);
+
+        args.add("-v");
+        args.add("-gjs");
+
+        String paths = "-p";
+        for (auto& path : searchPaths) {
+            paths += " " + path;
+        }
+
+        args.add(paths);
+
+        if (shouldQuit)
+            return true;
+
+        auto buildScript = "source " + emsdkPath + "/emsdk_env.sh; " + args.joinIntoString(" ");
+
+        Toolchain::startShellScript(buildScript, this);
+
+        waitForProcessToFinish(-1);
+        exportingView->flushConsole();
+
+        if (shouldQuit)
+            return true;
+
+        auto outputFile = File(outdir);
+        outputFile.getChildFile("c").deleteRecursively();
+        outputFile.getChildFile("ir").deleteRecursively();
+        outputFile.getChildFile("hv").deleteRecursively();
+
+        // Delay to get correct exit code
+        Time::waitForMillisecondCounter(Time::getMillisecondCounter() + 300);
+
+        bool generationExitCode = getExitCode();
+        return generationExitCode;
+    }
+};