1 files changed, 58 insertions, 0 deletions
diff --git a/tools/llvmc2/Action.cpp b/tools/llvmc2/Action.cpp
new file mode 100644
index 0000000000..82a1e0c4c9
--- /dev/null
+++ b/tools/llvmc2/Action.cpp
@@ -0,0 +1,58 @@
+//===--- Tools.h - The LLVM Compiler Driver ---------------------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open
+// Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+//  Action class - implementation and auxiliary functions.
+//
+//===----------------------------------------------------------------------===//
+
+#include "Action.h"
+
+#include "llvm/Support/CommandLine.h"
+#include "llvm/System/Program.h"
+
+#include <iostream>
+#include <stdexcept>
+
+using namespace llvm;
+
+extern cl::opt<bool> VerboseMode;
+
+namespace {
+  int ExecuteProgram(const std::string& name,
+                     const std::vector<std::string>& args) {
+    sys::Path prog = sys::Program::FindProgramByName(name);
+
+    if (prog.isEmpty())
+      throw std::runtime_error("Can't find program '" + name + "'");
+    if (!prog.canExecute())
+      throw std::runtime_error("Program '" + name + "' is not executable.");
+
+    // Invoke the program
+    std::vector<const char*> argv((args.size()+2));
+    argv[0] = name.c_str();
+    for (unsigned i = 1; i <= args.size(); ++i)
+      argv[i] = args[i-1].c_str();
+    argv[args.size()+1] = 0;  // null terminate list.
+
+    return sys::Program::ExecuteAndWait(prog, &argv[0]);
+  }
+
+  void print_string (const std::string& str) {
+    std::cerr << str << ' ';
+  }
+}
+
+int llvmcc::Action::Execute() {
+  if (VerboseMode) {
+    std::cerr << Command_ << " ";
+    std::for_each(Args_.begin(), Args_.end(), print_string);
+    std::cerr << '\n';
+  }
+  return ExecuteProgram(Command_, Args_);
+}