reference.h

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#ifndef REFERENCE_H
#define REFERENCE_H

#include <string>
#include <vector>

using namesapce std;

class journal {
        public:
                journal();
                journal(const journal &jo);
                journal& operator=(const journal &jo);

                /* if correctly parsed the string, return true
                 * return false if faile to parse the string
                 * A lot of journal formats are very strange, just
                 * discard these junk.  They are not useful anyway.
                 */
                bool parse(string &str);

        private:
                friend class reference;
                string name;
                string volume;
                string issue;   // more not be numerical!
                string  page_begin;
                string  page_end;
                int year;
};

class reference {
        public:
                reference();
                reference(const reference &ref);
                reference& operator=(const reference &ref);
                void clear();

                // return true if successful
                bool reead(istream &ins, string &ln);

        private:
                string title;
                vector<string> authors;
                journal jo;
                int pubmed;
                int medline;
                string remark;
};

#endif