Implement concurrent_runner

1 files changed, 76 insertions, 0 deletions

diff --git a/tests/test/script/driver.cxx b/tests/test/script/driver.cxx
new file mode 100644
index 0000000..b81172e
--- /dev/null
+++ b/tests/test/script/driver.cxx
@@ -0,0 +1,76 @@
+// file      : tests/test/script/driver.cxx -*- C++ -*-
+// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
+// license   : MIT; see accompanying LICENSE file
+
+#include <limits>    // numeric_limits
+#include <string>
+#include <cassert>
+#include <ostream>   // endl, *bit
+#include <iostream>
+#include <exception>
+
+using namespace std;
+
+int
+main (int argc, char* argv[])
+{
+  // Usage: driver [-i <int>] [-s <int>] (-o <string>)* (-e <string>)*
+  //
+  int status (256);
+  int ifd (3);
+
+  cout.exceptions (ostream::failbit | ostream::badbit);
+  cerr.exceptions (ostream::failbit | ostream::badbit);
+
+  for (int i (1); i < argc; ++i)
+  {
+    string o (argv[i++]);
+    assert (i < argc);
+
+    string v (argv[i]);
+
+    auto toi = [] (const string& s) -> int
+    {
+      try
+      {
+        return stoi (s);
+      }
+      catch (const exception&)
+      {
+        assert (false);
+      }
+    };
+
+    if (o == "-i")
+    {
+      assert (ifd == 3); // Make sure is not set yet.
+
+      ifd = toi (v);
+      assert (ifd >= 0 && ifd < 3);
+
+      if (ifd == 0)
+        cin.ignore (numeric_limits<streamsize>::max ());
+      else
+        (ifd == 1 ? cout : cerr) << cin.rdbuf ();
+    }
+    else if (o == "-o")
+    {
+      cout << v << endl;
+    }
+    else if (o == "-e")
+    {
+      cerr << v << endl;
+    }
+    else if (o == "-s")
+    {
+      assert (status == 256); // Make sure is not set yet.
+
+      status = toi (v);
+      assert (status >= 0 && status < 256);
+    }
+    else
+      assert (false);
+  }
+
+  return status == 256 ? 0 : status;
+}