libbobcat-dev 3.23.01-1 / usr / include / bobcat / mailheaders

#ifndef INCLUDED_BOBCAT__MAILHEADERS_
#define INCLUDED_BOBCAT_MAILHEADERS_

#include <istream>
#include <string>
#include <vector>

#include <bobcat/string>

namespace FBB
{

class MailHeaders
{
    public:
        typedef std::vector<std::string>::const_iterator const_iterator;
        typedef std::vector<std::string>::const_reverse_iterator 
                                                    const_reverse_iterator;
        enum Mode
        {
            DONT_READ,
            READ
        };
        enum Match
        {
            FAIL,
            INITIAL,
            PARTIAL,
            FULL,

            caseInsensitive,
            CASE_INITIAL = caseInsensitive,
            CASE_PARTIAL,
            CASE_FULL,
            lastMatch = CASE_FULL
        };

    private:
        enum Size
        {
            SIZEOFMATCH = lastMatch + 1,
        };

        std::vector<std::string> d_lines;
        std::istream            &d_in;
        std::string             d_hdr;
        Match                   d_match;

    public:
        class const_hdr_iterator:
            public std::iterator<std::input_iterator_tag, 
                                std::string const>
        {
            friend class MailHeaders;
            typedef bool(*Comparator)(std::string const &header, 
                                      std::string const &key);

            MailHeaders const  *d_mh;
            std::string         d_key;
            Comparator          d_comparator;
            const_iterator      d_current;

            static Comparator s_comparator[];

            const_hdr_iterator(MailHeaders const *mailHeaders,
                               const_iterator begin);

            const_iterator lookup(const_iterator const &old) const;
            const_iterator lookdown(const_iterator const &old) const;

            static bool fail(std::string const &hdr,            // .f
                                std::string const &key);
            static bool initial(std::string const &hdr,         // .f
                                std::string const &key);
            static bool partial(std::string const &hdr,         // .f
                                std::string const &key);
            static bool full(std::string const &hdr,            // .f
                                std::string const &key);
            static bool caseInitial(std::string const &hdr,     // .f
                                std::string const &key);
            static bool casePartial(std::string const &hdr,     // .f
                                std::string const &key);
            static bool caseFull(std::string const &hdr,        // .f
                                std::string const &key);

            public:
                const_hdr_iterator &operator++();               // opinc.f
                const_hdr_iterator &operator--();               // opdec.f
                const_hdr_iterator operator++(int);             // oppostinc.f

                // not used, but potentially available in consthdropdec.cc
                // const_hdr_iterator operator--(int);       

                bool operator==(const_hdr_iterator const &other)    // opeq.f
                                                            const; 

                bool operator!=(const_hdr_iterator const &other)    // opneq.f
                                                            const;

                std::string const &operator*() const;           // opstar.f
                std::string const *operator->() const;          // oparrow.f
        };


        typedef std::reverse_iterator<const_hdr_iterator>
                                            const_reverse_hdr_iterator; 

        explicit MailHeaders(std::istream &in, Mode mode = READ);
        MailHeaders(MailHeaders &&tmp);

        MailHeaders &operator=(MailHeaders &&tmp);

        void read();
        void setHeaderIterator(char const *header, Match match = FULL); // .f

        const_hdr_iterator beginh() const;                      // .f
        const_hdr_iterator endh() const;                        // .f

        const_reverse_hdr_iterator rbeginh() const;             // .f
        const_reverse_hdr_iterator rendh() const;               // .f

        // available from vector<string>:

        size_t size() const;                                    // .f
        std::string const &operator[](size_t idx) const;        // opindex.f

        const_iterator begin() const;                           // .f
        const_iterator end() const;                             // .f

        const_reverse_iterator rbegin() const;                  // .f
        const_reverse_iterator rend() const;                    // .f
};

inline MailHeaders::const_iterator MailHeaders::begin() const
{
    return d_lines.begin();
}
inline MailHeaders::const_hdr_iterator MailHeaders::beginh() const
{
    return const_hdr_iterator(this, begin()); 
                                        // returns iterator over all headers
                                        // matching d_hdr by the d_match type
}
inline MailHeaders::const_iterator MailHeaders::end() const
{
    return d_lines.end();
}
inline MailHeaders::const_hdr_iterator MailHeaders::endh() const
{
                                        // returns address of the sentinel
    return const_hdr_iterator(this, end()); 
}
inline std::string const &MailHeaders::operator[](size_t idx) const
{
    return d_lines[idx];
}
inline MailHeaders::const_reverse_iterator MailHeaders::rbegin() const
{
    return d_lines.rbegin();
}
inline MailHeaders::const_reverse_hdr_iterator MailHeaders::rbeginh() const
{
    return const_reverse_hdr_iterator(endh());
}
inline MailHeaders::const_reverse_iterator MailHeaders::rend() const
{
    return d_lines.rend();
}
inline MailHeaders::const_reverse_hdr_iterator MailHeaders::rendh() const
{
    return const_reverse_hdr_iterator(beginh());
}
inline void MailHeaders::setHeaderIterator(char const *header, Match match)
{
    d_hdr = header;
    d_match = match;
}
inline size_t MailHeaders::size() const
{
    return d_lines.size();
}

inline std::string const *MailHeaders::const_hdr_iterator::operator->() const
{
    return &*d_current;
}
inline MailHeaders::const_hdr_iterator 
&MailHeaders::const_hdr_iterator::operator--()
{
    d_current = lookdown(d_current);
    return *this;
}
inline bool MailHeaders::const_hdr_iterator::operator==(
                                    const_hdr_iterator const &other) const
{
    return d_current == other.d_current;
}
inline MailHeaders::const_hdr_iterator 
&MailHeaders::const_hdr_iterator::operator++()
{
    d_current = lookup(++d_current);
    return *this;
}
inline bool MailHeaders::const_hdr_iterator::operator!=(
                                    const_hdr_iterator const &other) const
{
    return d_current != other.d_current;
}
inline MailHeaders::const_hdr_iterator 
MailHeaders::const_hdr_iterator::operator++(int)
{
    return const_hdr_iterator(d_mh, d_current++);
}
inline std::string const &MailHeaders::const_hdr_iterator::operator*() const
{
    return *d_current;
}

} // FBB
        
#endif