Initial boost-regex++ release

[SVN r7845]

demo/snippets/snip1.cpp

@@ -0,0 +1,99 @@
+/*
+ *
+ * Copyright (c) 1998-2000
+ * Dr John Maddock
+ *
+ * Permission to use, copy, modify, distribute and sell this software
+ * and its documentation for any purpose is hereby granted without fee,
+ * provided that the above copyright notice appear in all copies and
+ * that both that copyright notice and this permission notice appear
+ * in supporting documentation.  Dr John Maddock makes no representations
+ * about the suitability of this software for any purpose.
+ * It is provided "as is" without express or implied warranty.
+ *
+ */
+
+ /*
+  *   LOCATION:    see http://www.boost.org for most recent version.
+  *   FILE         snip1.cpp
+  *   VERSION      3.00
+  *   DESCRIPTION: ftp based regex_match example.
+  */
+  
+#include <cstdlib>
+#include <boost/regex.hpp>
+#include <string>
+#include <iostream>
+
+using namespace std;
+using namespace boost;
+
+regex expression("^([0-9]+)(\\-| |$)(.*)$");
+
+// process_ftp:
+// on success returns the ftp response code, and fills
+// msg with the ftp response message.
+int process_ftp(const char* response, std::string* msg)
+{
+   cmatch what;
+   if(regex_match(response, what, expression))
+   {
+      // what[0] contains the whole string
+      // what[1] contains the response code
+      // what[2] contains the separator character
+      // what[3] contains the text message.
+      if(msg)
+         msg->assign(what[3].first, what[3].second);
+      return std::atoi(what[1].first);
+   }
+   // failure did not match
+   if(msg)
+      msg->erase();
+   return -1;
+}
+
+#if defined(BOOST_MSVC) || (defined(__BORLANDC__) && (__BORLANDC__ == 0x550))
+//
+// problem with std::getline under MSVC6sp3
+istream& getline(istream& is, std::string& s)
+{
+   s.erase();
+   char c = is.get();
+   while(c != '\n')
+   {
+      s.append(1, c);
+      c = is.get();
+   }
+   return is;
+}
+#endif
+
+int main()
+{
+  std::string in, out;
+  while(true)
+  {
+  cout << "enter test string" << endl;
+  getline(cin, in);
+  if(in == "quit")
+     break;
+  int result;
+  result = process_ftp(in.c_str(), &out);
+  if(result != -1)
+  {
+     cout << "Match found:" << endl;
+     cout << "Response code: " << result << endl;
+     cout << "Message text: " << out << endl;
+  }
+  else
+  {
+     cout << "Match not found" << endl;
+  }
+  cout << endl;
+  }
+  return 0;
+}
+
+
+
+