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/*
*
* Copyright (c) 1998-2000
* Dr John Maddock
*
* Use, modification and distribution are subject to the
* Boost Software License, Version 1.0. (See accompanying file
* LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*
*/
#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:]]*)?(\\{|:[^;\\{()]*\\{)");
class IndexClassesPred
{
map_type& m;
std::string::const_iterator base;
public:
IndexClassesPred(map_type& a, std::string::const_iterator b) : m(a), base(b) {}
bool operator()(const reg_match<std::string::const_iterator, regex::alloc_type>& what)
{
// 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 - base;
return true;
}
};
void IndexClasses(map_type& m, const std::string& file)
{
std::string::const_iterator start, end;
start = file.begin();
end = file.end();
reg_grep(IndexClassesPred(m, start), start, end, expression, match_default);
}
#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;
}
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