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codexlib.h

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*           Copyright (c) 2003-2007 AT&T Knowledge Ventures            *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                      by AT&T Knowledge Ventures                      *
*                                                                      *
*                A copy of the License is available at                 *
*            http://www.opensource.org/licenses/cpl1.0.txt             *
*         (with md5 checksum 059e8cd6165cb4c31e351f2b69388fd9)         *
*                                                                      *
*              Information and Software Systems Research               *
*                            AT&T Research                             *
*                           Florham Park NJ                            *
*                                                                      *
*                 Glenn Fowler <gsf@research.att.com>                  *
*                  David Korn <dgk@research.att.com>                   *
*                   Phong Vo <kpv@research.att.com>                    *
*                                                                      *
***********************************************************************/
#pragma prototyped

/*
 * codex private interface
 * included by <codex.h>
 */

#ifndef _CODEXLIB_H
#define _CODEXLIB_H

#include <debug.h>

#ifndef SFDCEVENT
#define SFDCEVENT(a,b,n)      ((((a)-'A'+1)<<11)^(((b)-'A'+1)<<6)^(n))
#endif

#define CODEX_DATA            SFDCEVENT('C','X','d')  /* get data */
#define CODEX_GETPOS          SFDCEVENT('C','X','g')  /* get position   */
#define CODEX_SETPOS          SFDCEVENT('C','X','s')  /* set position   */
#define CODEX_SIZE            SFDCEVENT('C','X','z')  /* set size */

typedef struct Codexcache_s
{
      Codex_t*    code;
      Codexnum_t  flags;
      Codexnum_t  cached;
      char        name[CODEX_NAME];
} Codexcache_t;

typedef struct Codexstate_s
{
      const char* id;
      Codexmeth_t*      first;
      Codexdisc_t disc;
      Codex_t           error;
      Codex_t*    last;
      char*       trace;
      char*       verbose;
      Codexnum_t  index;
      int         serial;
      unsigned int      initialized;
      unsigned int      scanned;
      unsigned int      cached;     
      Codexcache_t      cache[16];
} Codexstate_t;

#define CODEXERROR            (&codexstate.error)

#define codex_first           (&codex_uu)
#define codex_uu_next         (&codex_qp)
#define codex_qp_next         (&codex_rot13)
#define codex_rot13_next      (&codex_iconv)
#define codex_iconv_next      0

extern Codexmeth_t      codex_iconv;
extern Codexmeth_t      codex_qp;
extern Codexmeth_t      codex_rot13;
extern Codexmeth_t      codex_uu;

extern Codexstate_t     codexstate;

#endif

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