1 files changed, 44 insertions, 0 deletions

diff --git a/app/src/main/java/org/pacien/tincapp/commands/Executor.java b/app/src/main/java/org/pacien/tincapp/commands/Executor.java
new file mode 100644
index 0000000..edf229c
--- /dev/null
+++ b/app/src/main/java/org/pacien/tincapp/commands/Executor.java
@@ -0,0 +1,44 @@
+package org.pacien.tincapp.commands;
+
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.Collections;
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * @author pacien
+ */
+final class Executor {
+
+        private Executor() {
+                // static class
+        }
+
+        static {
+                System.loadLibrary("exec");
+        }
+
+        /**
+         * @return -1 on error, forked child PID otherwise
+         */
+        static private native int forkExec(String[] argcv);
+
+        static public void forkExec(Command cmd) throws IOException {
+                if (forkExec(cmd.asArray()) == -1)
+                        throw new IOException();
+        }
+
+        static public List<String> call(Command cmd) throws IOException {
+                Process proc = new ProcessBuilder(cmd.asList()).start();
+                BufferedReader outputReader = new BufferedReader(new InputStreamReader(proc.getInputStream()));
+
+                String line;
+                List<String> list = new LinkedList<>();
+                while ((line = outputReader.readLine()) != null) list.add(line);
+
+                return Collections.unmodifiableList(list);
+        }
+
+}