8: Create ProcessExecutor

src/main/java/com/bartek/esa/decompiler/process/ProcessExecutor.java

@@ -0,0 +1,31 @@
+package com.bartek.esa.decompiler.process;
+
+import com.bartek.esa.error.EsaException;
+import io.vavr.control.Try;
+
+import javax.inject.Inject;
+
+public class ProcessExecutor {
+
+    @Inject
+    public ProcessExecutor() {
+
+    }
+
+    public void execute(String[] command) {
+        Process process = Try.of(() -> Runtime.getRuntime().exec(command))
+                .getOrElseThrow(EsaException::new);
+        waitForProcess(process);
+        checkExitValue(process, command[0]);
+    }
+
+    private void waitForProcess(Process process) {
+        Try.run(process::waitFor).getOrElseThrow(EsaException::new);
+    }
+
+    private void checkExitValue(Process process, String commandName) {
+        if(process.exitValue() != 0) {
+            throw new EsaException("'" + commandName + "' process has finished with non-zero code. Interrupting...");
+        }
+    }
+}