[thirdparty/cups.git] / cups / mime.h

/*
 * "$Id: mime.h,v 1.4 1999/02/05 17:40:53 mike Exp $"
 *
 *   MIME type/conversion database definitions for the Common UNIX Printing System (CUPS).
 *
 *   Copyright 1997-1999 by Easy Software Products, all rights reserved.
 *
 *   These coded instructions, statements, and computer programs are the
 *   property of Easy Software Products and are protected by Federal
 *   copyright law.  Distribution and use rights are outlined in the file
 *   "LICENSE.txt" which should have been included with this file.  If this
 *   file is missing or damaged please contact Easy Software Products
 *   at:
 *
 *       Attn: CUPS Licensing Information
 *       Easy Software Products
 *       44145 Airport View Drive, Suite 204
 *       Hollywood, Maryland 20636-3111 USA
 *
 *       Voice: (301) 373-9603
 *       EMail: cups-info@cups.org
 *         WWW: http://www.cups.org
 */

#ifndef _MIME_H_
#  define _MIME_H_

/*
 * C++ magic...
 */

#  ifdef _cplusplus
extern "C" {
#  endif /* _cplusplus */


/*
 * Constants...
 */

#  define MIME_MAX_SUPER	16	/* Maximum size of supertype name */
#  define MIME_MAX_TYPE		32	/* Maximum size of type name */
#  define MIME_MAX_FILTER	256	/* Maximum size of filter pathname */
#  define MIME_MAX_BUFFER	8192	/* Maximum size of file buffer */


/*
 * Types/structures...
 */

typedef enum
{
  MIME_MAGIC_NOP,	/* No operation */
  MIME_MAGIC_AND,	/* Logical AND of all children */
  MIME_MAGIC_OR,	/* Logical OR of all children */
  MIME_MAGIC_MATCH,	/* Filename match */
  MIME_MAGIC_ASCII,	/* ASCII characters in range */
  MIME_MAGIC_PRINTABLE,	/* Printable characters (32-255) in range */
  MIME_MAGIC_STRING,	/* String matches */
  MIME_MAGIC_CHAR,	/* Character/byte matches */
  MIME_MAGIC_SHORT,	/* Short/16-bit word matches */
  MIME_MAGIC_INT,	/* Integer/32-bit word matches */
  MIME_MAGIC_LOCALE	/* Current locale matches string */
} mime_op_t;

typedef struct mime_magic_str		/**** MIME Magic Data ****/
{
  struct mime_magic_str	*prev,		/* Previous rule */
			*next,		/* Next rule */
			*parent,	/* Parent rules */
			*child;		/* Child rules */
  short		op,			/* Operation code (see above) */
		invert;			/* Invert the result */
  int		offset,			/* Offset in file */
		length;			/* Length of data */
  union
  {
    char	matchv[64];		/* Match value */
    char	localev[64];		/* Locale value */
    char	stringv[64];		/* String value */
    char	charv;			/* Byte value */
    short	shortv;			/* Short value */
    int		intv;			/* Integer value */
  }		value;
} mime_magic_t;

typedef struct				/**** MIME Type Data ****/
{
  char		super[MIME_MAX_SUPER],	/* Super-type name ("image", "application", etc.) */
		type[MIME_MAX_TYPE];	/* Type name ("png", "postscript", etc.) */
  mime_magic_t	*rules;			/* Rules used to detect this type */
} mime_type_t;

typedef struct				/**** MIME Conversion Filter Data ****/
{
  mime_type_t	*src,			/* Source type */
		*dst;			/* Destination type */
  int		cost;			/* Relative cost */
  char		filter[MIME_MAX_FILTER];/* Filter program to use */
} mime_filter_t;

typedef struct				/**** MIME Database ****/
{
  int		num_types;		/* Number of file types */
  mime_type_t	**types;		/* File types */
  int		num_filters;		/* Number of type conversion filters */
  mime_filter_t	*filters;		/* Type conversion filters */
} mime_t;


/*
 * Functions...
 */

extern void		mimeDelete(mime_t *mime);
#define mimeLoad(pathname)	mimeMerge((mime_t *)0, (pathname));
extern mime_t		*mimeMerge(mime_t *mime, char *pathname);
extern mime_t		*mimeNew(void);

extern mime_type_t	*mimeAddType(mime_t *mime, char *super, char *type);
extern int		mimeAddTypeRule(mime_type_t *mt, char *rule);
extern mime_type_t	*mimeFileType(mime_t *mime, char *pathname);
extern mime_type_t	*mimeType(mime_t *mime, char *super, char *type);

extern mime_filter_t	*mimeAddFilter(mime_t *mime, mime_type_t *src, mime_type_t *dst,
			               int cost, char *filter);
extern mime_filter_t	*mimeFilter(mime_t *mime, mime_type_t *src, mime_type_t *dst,
			            int *num_filters);

#  ifdef _cplusplus
}
#  endif /* _cplusplus */
#endif /* !_MIME_H_ */

/*
 * End of "$Id: mime.h,v 1.4 1999/02/05 17:40:53 mike Exp $".
 */
Commit	Line	Data
79df52e3	1	/*
3b960317	2	* "$Id: mime.h,v 1.4 1999/02/05 17:40:53 mike Exp $"
79df52e3	3	*
0b74af7d	4	* MIME type/conversion database definitions for the Common UNIX Printing System (CUPS).
79df52e3	5	*
3a193f5e	6	* Copyright 1997-1999 by Easy Software Products, all rights reserved.
79df52e3	7	*
	8	* These coded instructions, statements, and computer programs are the
	9	* property of Easy Software Products and are protected by Federal
	10	* copyright law. Distribution and use rights are outlined in the file
	11	* "LICENSE.txt" which should have been included with this file. If this
	12	* file is missing or damaged please contact Easy Software Products
	13	* at:
	14	*
	15	* Attn: CUPS Licensing Information
	16	* Easy Software Products
	17	* 44145 Airport View Drive, Suite 204
	18	* Hollywood, Maryland 20636-3111 USA
	19	*
	20	* Voice: (301) 373-9603
	21	* EMail: cups-info@cups.org
	22	* WWW: http://www.cups.org
79df52e3	23	*/
79df52e3	24
0b74af7d	25	#ifndef _MIME_H_
	26	# define _MIME_H_
	27
0b74af7d	28	/*
	29	* C++ magic...
	30	*/
	31
	32	# ifdef _cplusplus
	33	extern "C" {
	34	# endif /* _cplusplus */
	35
	36
	37	/*
	38	* Constants...
	39	*/
	40
	41	# define MIME_MAX_SUPER 16 /* Maximum size of supertype name */
	42	# define MIME_MAX_TYPE 32 /* Maximum size of type name */
	43	# define MIME_MAX_FILTER 256 /* Maximum size of filter pathname */
	44	# define MIME_MAX_BUFFER 8192 /* Maximum size of file buffer */
	45
	46
	47	/*
	48	* Types/structures...
	49	*/
	50
	51	typedef enum
	52	{
	53	MIME_MAGIC_NOP, /* No operation */
	54	MIME_MAGIC_AND, /* Logical AND of all children */
	55	MIME_MAGIC_OR, /* Logical OR of all children */
	56	MIME_MAGIC_MATCH, /* Filename match */
	57	MIME_MAGIC_ASCII, /* ASCII characters in range */
	58	MIME_MAGIC_PRINTABLE, /* Printable characters (32-255) in range */
	59	MIME_MAGIC_STRING, /* String matches */
	60	MIME_MAGIC_CHAR, /* Character/byte matches */
	61	MIME_MAGIC_SHORT, /* Short/16-bit word matches */
	62	MIME_MAGIC_INT, /* Integer/32-bit word matches */
	63	MIME_MAGIC_LOCALE /* Current locale matches string */
	64	} mime_op_t;
	65
	66	typedef struct mime_magic_str /** MIME Magic Data **/
	67	{
	68	struct mime_magic_str prev, / Previous rule */
	69	next, / Next rule */
	70	parent, / Parent rules */
	71	child; / Child rules */
	72	short op, /* Operation code (see above) */
	73	invert; /* Invert the result */
	74	int offset, /* Offset in file */
	75	length; /* Length of data */
	76	union
	77	{
	78	char matchv[64]; /* Match value */
	79	char localev[64]; /* Locale value */
	80	char stringv[64]; /* String value */
	81	char charv; /* Byte value */
	82	short shortv; /* Short value */
	83	int intv; /* Integer value */
	84	} value;
	85	} mime_magic_t;
	86
	87	typedef struct /** MIME Type Data **/
	88	{
	89	char super[MIME_MAX_SUPER], /* Super-type name ("image", "application", etc.) */
	90	type[MIME_MAX_TYPE]; /* Type name ("png", "postscript", etc.) */
	91	mime_magic_t rules; / Rules used to detect this type */
92	} mime_type_t;
93
94	typedef struct /** MIME Conversion Filter Data **/
95	{
96	mime_type_t src, / Source type */
97	dst; / Destination type */
98	int cost; /* Relative cost */
99	char filter[MIME_MAX_FILTER];/* Filter program to use */
100	} mime_filter_t;
101
102	typedef struct /** MIME Database **/
103	{
104	int num_types; /* Number of file types */
105	mime_type_t *types; / File types */
106	int num_filters; /* Number of type conversion filters */
107	mime_filter_t filters; / Type conversion filters */
108	} mime_t;
109
110
111	/*
112	* Functions...
113	*/
114
115	extern void mimeDelete(mime_t *mime);
3b960317	116	#define mimeLoad(pathname) mimeMerge((mime_t *)0, (pathname));
0b74af7d	117	extern mime_t mimeMerge(mime_t mime, char *pathname);
	118	extern mime_t *mimeNew(void);
	119
	120	extern mime_type_t mimeAddType(mime_t mime, char super, char type);
	121	extern int mimeAddTypeRule(mime_type_t mt, char rule);
	122	extern mime_type_t mimeFileType(mime_t mime, char *pathname);
	123	extern mime_type_t mimeType(mime_t mime, char super, char type);
	124
	125	extern mime_filter_t mimeAddFilter(mime_t mime, mime_type_t src, mime_type_t dst,
	126	int cost, char *filter);
	127	extern mime_filter_t mimeFilter(mime_t mime, mime_type_t src, mime_type_t dst,
	128	int *num_filters);
	129
	130	# ifdef _cplusplus
	131	}
	132	# endif /* _cplusplus */
0b74af7d	133	#endif /* !_MIME_H_ */
79df52e3	134
79df52e3	135	/*
3b960317	136	* End of "$Id: mime.h,v 1.4 1999/02/05 17:40:53 mike Exp $".
79df52e3	137	*/