Initial boost-regex++ release

[SVN r7845]

old_include/tests/snip2.cpp

@@ -0,0 +1,69 @@
+#include <string>
+#include <map>
+#include <regex>
+
+// purpose:
+// takes the contents of a file in the form of a string
+// and searches for all the C++ class definitions, storing
+// their locations in a map of strings/int's
+
+typedef std::map<std::string, int, std::less<std::string> > map_type;
+
+regex expression("^(template[[:space:]]*<[^;:{]+>[[:space:]]*)?(class|struct)[[:space:]]*(\\<\\w+\\>([[:blank:]]*\\([^)]*\\))?[[:space:]]*)*(\\<\\w*\\>)[[:space:]]*(<[^;:{]+>[[:space:]]*)?(\\{|:[^;\\{()]*\\{)");
+
+void IndexClasses(map_type& m, const std::string& file)
+{
+   std::string::const_iterator start, end;
+   start = file.begin();
+   end = file.end();   
+   reg_match<std::string::const_iterator> what;
+   unsigned int flags = match_default;
+   while(reg_search(start, end, what, expression, flags))   
+   {
+      // what[0] contains the whole string
+      // what[5] contains the class name.
+      // what[6] contains the template specialisation if any.
+      // add class name and position to map:
+      m[std::string(what[5].first, what[5].second) + std::string(what[6].first, what[6].second)] = 
+               what[5].first - file.begin();      
+      // update search position:
+      start = what[0].second;      
+      // update flags:
+      flags |= match_prev_avail;      
+      flags |= ~match_not_bob;   
+   }
+}
+
+
+#include <fileiter.h>
+#include <iostream>
+
+using namespace std;
+
+int main(int argc, const char** argv)
+{
+   for(int i = 1; i < argc; ++i)
+   {
+      cout << "Processing file " << argv[i] << endl;
+      map_type m;
+      mapfile f(argv[i]);
+      std::string text(f.begin(), f.end());
+      IndexClasses(m, text);
+      cout << m.size() << " matches found" << endl;
+      map_type::iterator c, d;
+      c = m.begin();
+      d = m.end();
+      while(c != d)
+      {
+         cout << "class \"" << (*c).first << "\" found at index: " << (*c).second << endl;
+         ++c;
+      }
+   }
+   return 0;
+}
+
+
+
+
+
+