package processing.mode.cpp; import java.io.*; import processing.app.RunnerListener; public class CppRunner { private final File binary; private final File sketchFolder; private final File runtimeDir; private final RunnerListener listener; private Process process; public CppRunner(File binary, File sketchFolder, File runtimeDir, RunnerListener listener) { this.binary = binary; this.sketchFolder = sketchFolder; this.runtimeDir = runtimeDir; this.listener = listener; } public void launch() { if (!binary.exists()) { listener.statusError("Binary not found: " + binary.getAbsolutePath()); return; } binary.setExecutable(true); new Thread(() -> { try { ProcessBuilder pb = new ProcessBuilder(binary.getAbsolutePath()); pb.directory(sketchFolder); pb.redirectErrorStream(false); // Pass sketch folder so loadImage/loadStrings find data/ assets pb.environment().put("PROCESSING_SKETCH_NAME", sketchFolder.getName()); pb.environment().put("PROCESSING_SKETCH_PATH", sketchFolder.getAbsolutePath().replace('\\', '/')); // Pass mode src/ dir so Processing.cpp can find fonts if (runtimeDir != null) // Pass the mode root (parent of src/) so fonts/ subdir is reachable pb.environment().put("PROCESSING_MODE_PATH", runtimeDir.getParentFile().getAbsolutePath().replace('\\', '/')); process = pb.start(); Thread out = new Thread(() -> pipe(process.getInputStream(), System.out)); Thread err = new Thread(() -> pipe(process.getErrorStream(), System.err)); out.start(); err.start(); int code = process.waitFor(); out.join(); err.join(); if (code != 0 && code != 137 && code != 143) listener.statusError("Sketch exited with code " + code); else listener.statusNotice("Sketch finished."); } catch (InterruptedException e) { Thread.currentThread().interrupt(); } catch (Exception e) { listener.statusError("Could not launch: " + e.getMessage()); } }).start(); } public void stop() { if (process != null && process.isAlive()) process.destroyForcibly(); } private void pipe(InputStream in, PrintStream out) { try (BufferedReader br = new BufferedReader(new InputStreamReader(in))) { String line; while ((line = br.readLine()) != null) out.println(line); } catch (IOException ignored) {} } }