polynomial_xml.hpp

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#ifndef realroot_polynomial_xml_hpp
#define realroot_polynomial_xml_hpp
//====================================================================
#include <iostream>
#include <stdio.h>
#include <realroot/polynomial.hpp>

#define begin_polynomial "<polynomial"
#define end_polynomial "</polynomial>"

//====================================================================
namespace mmx {
namespace xml {

template<class OSTREAM, typename X>
OSTREAM& print(OSTREAM& os, const X& x, const char *tag)
{
    os<<"<"<<tag<<">"<<x<<"</"<<tag<<">";
    return os;
}

template<class ISTREAM>
bool skip(ISTREAM& is, const char* s) {
    char c=(*s); const char* t=s;
    unsigned n= strlen(s),i=0;
    while(c != EOF) {
        for(i=0; i<n && (c !=EOF) && (c=is.get()) == (*t); i++,t++);
        if(i==n) {
            while((c=is.get()) != EOF && c != '>') ;
            return true;
        }
        else
            t=s;
    }

    return false;
}

template<class ISTREAM, typename C, typename R> bool
read(ISTREAM& is, polynomial<C,R>& p, variables& V) {
    if(skip(is,begin_polynomial)) {
        std::string s; char c;
        while((c=is.get()) != EOF && c != '<') {
            if(c != ' ' && c != '\n') s+=c;
        }
        s+='\0';
        p = polynomial<C,R>(s.data(),V);
        return true;
    } else {
        p=polynomial<C,R>(0); return false;
    }
}

template<class ISTREAM> bool
sread(ISTREAM& is, std::string& s) {
    if(skip(is,begin_polynomial)) {
        char c;
        while((c=is.get()) != EOF && c != '<') {
            if(c != ' ' && c != '\n') s+=c;
        }
        s+='\0';
        return true;
    } else {
        return false;
    }
}

} //namespace xml
} //namespace mmx
//====================================================================
# undef begin_polynomial
# undef end_polynomial
#endif //realroot_polynomial_xml_hpp