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magic.h

/***********************************************************************
*                                                                      *
*               This software is part of the ast package               *
*          Copyright (c) 1985-2009 AT&T Intellectual Property          *
*                      and is licensed under the                       *
*                  Common Public License, Version 1.0                  *
*                    by AT&T Intellectual Property                     *
*                                                                      *
*                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
/*
 * Glenn Fowler
 * AT&T Research
 *
 * magic interface definitions
 */

#ifndef _MAGIC_H
#define _MAGIC_H

#include <sfio.h>
#include <ls.h>

#define MAGIC_VERSION   19961031L

#ifndef MAGIC_FILE
#define MAGIC_FILE      "lib/file/magic"
#endif

#ifndef MAGIC_DIR
#define MAGIC_DIR "lib/file"
#endif

#define MAGIC_FILE_ENV  "MAGICFILE"

#define MAGIC_MIME      (1<<0)            /* magictype returns MIME type      */
#define MAGIC_VERBOSE   (1<<1)            /* verbose magic file errors  */

#define MAGIC_USER      (1L<<16)    /* first user flag bit        */

struct Magic_s;
struct Magicdisc_s;

typedef struct Magicdisc_s
{
      unsigned long     version;    /* interface version          */
      unsigned long     flags;            /* MAGIC_* flags        */
      Error_f           errorf;           /* error function       */
} Magicdisc_t;

typedef struct Magic_s
{
      const char* id;         /* library id string          */

#ifdef _MAGIC_PRIVATE_
      _MAGIC_PRIVATE_
#endif

} Magic_t;

#if _BLD_ast && defined(__EXPORT__)
#define extern          __EXPORT__
#endif

extern Magic_t*         magicopen(Magicdisc_t*);
extern int        magicload(Magic_t*, const char*, unsigned long);
extern int        magiclist(Magic_t*, Sfio_t*);
extern char*            magictype(Magic_t*, Sfio_t*, const char*, struct stat*);
extern int        magicclose(Magic_t*);

#undef      extern

#endif

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