如何在Windows Vista上编译为Linux / Unix编写的C源代码(给出代(2)

/*
 PrefixSpan: An efficient algorithm for sequential pattern mining

 $Id: prefixspan.cpp,v 1.8 2002/04/03 13:35:23 taku-ku Exp $;

 Copyright (C) 2002 Taku Kudo   All rights reserved.
 This is free software with ABSOLUTELY NO WARRANTY.

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License,or
 (at your option) any later version.

 This program is distributed in the hope that it will be useful,but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.   See the
 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License
 along with this program; if not,write to the Free Software
 Foundation,Inc.,59 Temple Place - Suite 330,Boston,MA
 02111-1307,USA
*/

#include <iostream>
#include <map>
#include <vector>
#include <string>
#include <string.h>
#include <strstream>
#include <unistd.h>
#include <stdlib.h>

using namespace std;

template <class T> class PrefixSpan {
private:
    vector < vector <T> >            transaction;
    vector < pair <T,unsigned int> > pattern;
    unsigned int minsup;
    unsigned int minpat;
    unsigned int maxpat;
    bool all;
    bool where;
    string delimiter;
    bool verbose;
    ostream *os;

void report (vector <pair <unsigned int,int> > &projected){
    if (minpat > pattern.size()) return;

    // print where & pattern
    if (where) {
        *os << "<pattern>" << endl;

        // what:
        if (all) {
            *os << "<freq>" << pattern[pattern.size()-1].second << "</freq>" << endl;
            *os << "<what>";
            for (unsigned int i = 0; i < pattern.size(); i++)
                *os << (i ? " " : "") << pattern[i].first;
            } else {
                *os << "<what>";
                 for (unsigned int i = 0; i < pattern.size(); i++)
                    *os << (i ? " " : "") << pattern[i].first << delimiter << pattern[i].second;
            }
            *os << "</what>" << endl;

        // where
        *os << "<where>";
        for (unsigned int i = 0; i < projected.size(); i++)
            *os << (i ? " " : "") << projected[i].first;
        *os << "</where>" << endl;
        *os << "</pattern>" << endl;
    } else {
        // print found pattern only
        if (all) {
             *os << pattern[pattern.size()-1].second;
             for (unsigned int i = 0; i < pattern.size(); i++)
                *os << " " << pattern[i].first;
            } else {
                 for (unsigned int i = 0; i < pattern.size(); i++)
                    *os << (i ? " " : "") << pattern[i].first << delimiter << pattern[i].second;
            }

        *os << endl;
    }
}

void project (vector <pair <unsigned int,int> > &projected){
    if (all) report(projected);

    map <T,int> > > counter;

    for (unsigned int i = 0; i < projected.size(); i++) {
        int pos = projected[i].second;
        unsigned int id = projected[i].first;
        unsigned int size = transaction[id].size();
        map <T,int> tmp;
        for (unsigned int j = pos + 1; j < size; j++) {
            T item = transaction[id][j];
            if (tmp.find (item) == tmp.end()) tmp[item] = j ;
        }

        for (typename map <T,int>::iterator k = tmp.begin(); k != tmp.end(); ++k)
            counter[k->first].push_back (make_pair <unsigned int,k->second));
    }

    for (typename map <T,int> > >::iterator l = counter.begin ();
    l != counter.end (); ) {
        if (l->second.size() < minsup) {
            typename map <T,int> > >::iterator tmp = l;
            tmp = l;
            ++tmp;
            counter.erase (l);
            l = tmp;
        } else {
            ++l;
        }
    }

    if (! all && counter.size () == 0) {
        report (projected);
        return;
    }

    for (typename map <T,int> > >::iterator l = counter.begin ();
    l != counter.end(); ++l) {
        if (pattern.size () < maxpat) {
             pattern.push_back (make_pair <T,l->second.size()));
             project (l->second);
             pattern.erase (pattern.end());
        }
    }
}

public:
    PrefixSpan (unsigned int _minsup = 1,verbose (_verbose) {};

    ~PrefixSpan () {};

    istream& read (istream &is){
        string line;
        vector <T> tmp;
        T item;
        while (getline (is,line)) {
            tmp.clear ();
            istrstream istrs ((char *)line.c_str());
            while (istrs >> item) tmp.push_back (item);
            transaction.push_back (tmp);
        }

        return is;
    }

    ostream& run (ostream &_os){
        os = &_os;
        if (verbose) *os << transaction.size() << endl;
        vector <pair <unsigned int,int> > root;
        for (unsigned int i = 0; i < transaction.size(); i++)
            root.push_back (make_pair (i,-1));
         project (root);
        return *os;
    }

    void clear (){
        transaction.clear ();
        pattern.clear ();
    }
};

int main (int argc,char **argv){
    extern char *optarg;
    unsigned int minsup = 1;
    unsigned int minpat = 1;
    unsigned int maxpat = 0xffffffff;
    bool all = false;
    bool where = false;
    string delimiter = "/";
    bool verbose = false;
    string type = "string";

    int opt;
    while ((opt = getopt(argc,"awvt:M:m:L:d:")) != -1){
        switch(opt) {
        case 'a':
            all = true;
            break;
        case 'w':
            where = true;
            break;
        case 'v':
            verbose = true;
            break;
        case 'm':
            minsup = atoi (optarg);
            break;
        case 'M':
            minpat = atoi (optarg);
            break;
        case 'L':
            maxpat = atoi (optarg);
            break;
        case 't':
            type = string (optarg);
            break;
        case 'd':
            delimiter = string (optarg);
            break;
        default:
            cout << "Usage: " << argv[0]
            << " [-m minsup] [-M minpat] [-L maxpat] [-a] [-w] [-v] [-t type] [-d delimiter] < data .." << endl;
            return -1;
        }
    }

    if (type == "int") {
         PrefixSpan<unsigned int> prefixspan (minsup,verbose);
         prefixspan.read (cin);
         prefixspan.run (cout);
    }else if (type == "short") {
         PrefixSpan<unsigned short> prefixspan (minsup,verbose);
         prefixspan.read (cin);
         prefixspan.run (cout);
    } else if (type == "char") {
         PrefixSpan<unsigned char> prefixspan (minsup,verbose);
         prefixspan.read (cin);
         prefixspan.run (cout);
    } else if (type == "string") {
         PrefixSpan<string> prefixspan (minsup,verbose);
         prefixspan.read (cin);
         prefixspan.run (cout);
    } else {
        cerr << "Unknown Item Type: " << type << " : choose from [string|int|short|char]" << endl;
        return -1;
    }

    return 0;
}

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