1 files changed, 66 insertions, 0 deletions
diff --git a/src/mem/slicc/generator/fileio.cc b/src/mem/slicc/generator/fileio.cc
new file mode 100644
index 000000000..273c76bfd
--- /dev/null
+++ b/src/mem/slicc/generator/fileio.cc
@@ -0,0 +1,66 @@
+
+/*
+ * Copyright (c) 1999-2008 Mark D. Hill and David A. Wood
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met: redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer;
+ * redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution;
+ * neither the name of the copyright holders nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * fileio.C
+ *
+ * Description: See fileio.h
+ *
+ * $Id: fileio.C,v 3.3 2003/07/10 18:08:08 milo Exp $
+ *
+ * */
+
+#include "mem/slicc/generator/fileio.hh"
+
+void conditionally_write_file(string filename, ostringstream& sstr)
+{
+  ofstream out;
+  ifstream in;
+  string input_file;
+
+  // Read in the file if it exists
+  in.open(filename.c_str());
+  char c;
+  while (in.get(c)) {
+    input_file += c;
+  }
+  in.close();
+
+  // Check to see if the file is the same as what we want to write
+  if (input_file != sstr.str()) {
+    cout << "    Overwriting file: " << filename << endl;
+    // Overwrite the old file with the new file
+    out.open(filename.c_str());
+    out << sstr.str();
+    out.close();
+  } else {
+    //cout << "    Keeping old file: " << filename << endl;
+  }
+}
+