Article.h

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#ifndef __Article_h__
#define __Article_h__

//#include <ctype.h>
//#include <stdio.h>

#include <string>

#include "NSError.h"
#include "Debug.h"
#include "readline.h"

class InvalidArticleError:public NSError {
      public:
        InvalidArticleError(const char *txt, const char *file,
                            const char *function, int line);
        
        InvalidArticleError(const std::string & txt, const char *file,
                              const char *function, int line);

        virtual void print(void);
};

class Article {
      private:

        const char *find_field(const char *ifld) const;

      protected:
        int _nbr;
        std::string _text;
        const char *_ctext;

      public:
        enum {
                Head = 0x1,
                Body = 0x2
        };

        Article();
        Article(Article * a);
        Article(int artnbr);
        Article(int artnbr, const char *text, int textlen = 0);
        ~Article();

        void read(std::istream & is);

        void setnbr(int nbr);
        
        void clear(void);
        
        void settext(const std::string & text);

        int getnbr(void) const;
        
        /* Return Text string
         */
        std::string GetText(void);
        
        const char *c_str(void);
        
        int length(void) const;
        
        int has_field(const char *ifld);

        /*
         * Return a header field of the article.
         * \param ifld The name of the field to be extracted including `:'
         * \throw NoSuchFieldError raised, if fld is not part of the
         *      overview database
         */
        std::string getfield(const char *ifld, int Full = 0) const;

        void setfield(const char *ifld, const char *field_data);

        std::ostream & write(std::ostream & os, int flags = Head | Body);

        friend std::ostream & operator<<(std::ostream & os, Article & art);
};

#endif

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