//  This may look like C code, but it is really -*- C++ -*-

//  ------------------------------------------------------------------
//  The Goldware Library
//  Copyright (C) 1990-1999 Odinn Sorensen
//  ------------------------------------------------------------------
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Library General Public
//  License as published by the Free Software Foundation; either
//  version 2 of the License, or (at your option) any later version.
//
//  This library 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
//  Library General Public License for more details.
//
//  You should have received a copy of the GNU Library 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
//  ------------------------------------------------------------------
//  $Id$
//  ------------------------------------------------------------------

#ifndef __gstrmail_h
#define __gstrmail_h


//  ------------------------------------------------------------------

#include <gdefs.h>


//  ------------------------------------------------------------------

class mail_ctype {

public:

  enum {
    mail_char       = 0x01,
    mail_alpha      = 0x02,
    mail_ctl        = 0x04,
    mail_lwsp       = 0x08,
    mail_special    = 0x10,
    mail_delimiters = 0x20,
    mime_tspecial   = 0x40,  // RFC1521 parameter token specials
    mime_especial   = 0x80   // RFC1522 encoded-word token specials
  };

  uint table[256];
  mail_ctype();
};

extern mail_ctype mail_ctype_global;


//  ------------------------------------------------------------------

inline bool is_mail_char(uint c)       { return make_bool(mail_ctype_global.table[c] & mail_ctype::mail_char); }
inline bool is_mail_alpha(uint c)      { return make_bool(mail_ctype_global.table[c] & mail_ctype::mail_alpha); }
inline bool is_mail_ctl(uint c)        { return make_bool(mail_ctype_global.table[c] & mail_ctype::mail_ctl); }
inline bool is_mail_cr(uint c)         { return c == CR; }
inline bool is_mail_lf(uint c)         { return c == LF; }
inline bool is_mail_space(uint c)      { return c == ' '; }
inline bool is_mail_htab(uint c)       { return c == HT; }
inline bool is_mail_crlf(uint c)       { return is_mail_cr(c) or is_mail_lf(c); }
inline bool is_mail_lwsp(uint c)       { return make_bool(mail_ctype_global.table[c] & mail_ctype::mail_lwsp); }
inline bool is_mail_special(uint c)    { return make_bool(mail_ctype_global.table[c] & mail_ctype::mail_special); }
inline bool is_mail_delimiters(uint c) { return make_bool(mail_ctype_global.table[c] & mail_ctype::mail_delimiters); }
inline bool is_mime_tspecial(uint c)   { return make_bool(mail_ctype_global.table[c] & mail_ctype::mime_tspecial); }
inline bool is_mime_especial(uint c)   { return make_bool(mail_ctype_global.table[c] & mail_ctype::mime_especial); }
inline bool is_mail_atom_delimiters(uint c) { return is_mail_delimiters(c) or is_mail_ctl(c); }
inline bool is_mime_ct_token_valid(uint c) { return not (is_mail_lwsp(c) or is_mail_ctl(c) or is_mime_tspecial(c)); }


//  ------------------------------------------------------------------

const char* strskip_lwsp(const char* p);
const char* strskip_mail_quote(const char* p);
const char* strskip_delimiters(const char* p);

char* strtrim_lwsp(char* p);

char* strmail_quote(char* ot, const char* it);
char* strmail_unquote(char* ot, const char* it);
char* strmail_unquote_qtext(char* ot, const char* it);

int is_mail_lwsp(const char* s);


//  ------------------------------------------------------------------

#endif

//  ------------------------------------------------------------------