mpack_src/mpack-1.6-4/part.h

/*
 * Read MIME body-part, stopping on boundaries.
 */
/* (C) Copyright 1994 by Carnegie Mellon University
 * All Rights Reserved.
 *
 * Permission to use, copy, modify, distribute, and sell this software
 * and its documentation for any purpose is hereby granted without
 * fee, provided that the above copyright notice appear in all copies
 * and that both that copyright notice and this permission notice
 * appear in supporting documentation, and that the name of Carnegie
 * Mellon University not be used in advertising or publicity
 * pertaining to distribution of the software without specific,
 * written prior permission.  Carnegie Mellon University makes no
 * representations about the suitability of this software for any
 * purpose.  It is provided "as is" without express or implied
 * warranty.
 *
 * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
 * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
 * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
 * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
 * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
 * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
 * SOFTWARE.
 */

/* Max length of a MIME "boundary", per RFC 1521 */
#define PART_MAX_BOUNDARY_LEN 70

/* Structure describing an input file from which we read MIME */
struct part {
    /* Input file */
    FILE *infile;

    /* Input buffer */
    unsigned char *buf;
    int buf_alloc;
    unsigned char *ptr;
    int cnt;

    /* Boundary information */
    char (*boundary)[PART_MAX_BOUNDARY_LEN+1];
    int *boundary_length;
    int boundary_alloc;
    int boundary_num;
    int boundary_seen;          /* Index of boundary last seen, or
                                 * boundary_num if no pending boundary
                                 */
};

#define part_getc(s) (((s)->cnt-- > 0 && (s)->ptr[0] != '\n') ? (int)*(s)->ptr++ : part_fill(s))

#define part_ungetc(c, s) ((s)->cnt++, ((s)->boundary_seen = (s)->boundary_num), (*--(s)->ptr = (c)))

extern struct part *part_init(FILE *infile);
extern char *part_gets(char *s, int n, struct part *part);

1	/*
2	* Read MIME body-part, stopping on boundaries.
3	*/
4	/* (C) Copyright 1994 by Carnegie Mellon University
5	* All Rights Reserved.
6	*
7	* Permission to use, copy, modify, distribute, and sell this software
8	* and its documentation for any purpose is hereby granted without
9	* fee, provided that the above copyright notice appear in all copies
10	* and that both that copyright notice and this permission notice
11	* appear in supporting documentation, and that the name of Carnegie
12	* Mellon University not be used in advertising or publicity
13	* pertaining to distribution of the software without specific,
14	* written prior permission. Carnegie Mellon University makes no
15	* representations about the suitability of this software for any
16	* purpose. It is provided "as is" without express or implied
17	* warranty.
18	*
19	* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
20	* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
21	* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
22	* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
23	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
24	* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
25	* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
26	* SOFTWARE.
27	*/
28
29	/* Max length of a MIME "boundary", per RFC 1521 */
30	#define PART_MAX_BOUNDARY_LEN 70
31
32	/* Structure describing an input file from which we read MIME */
33	struct part {
34	/* Input file */
35	FILE *infile;
36
37	/* Input buffer */
38	unsigned char *buf;
39	int buf_alloc;
40	unsigned char *ptr;
41	int cnt;
42
43	/* Boundary information */
44	char (*boundary)[PART_MAX_BOUNDARY_LEN+1];
45	int *boundary_length;
46	int boundary_alloc;
47	int boundary_num;
48	int boundary_seen; /* Index of boundary last seen, or
49	* boundary_num if no pending boundary
50	*/
51	};
52
53	#define part_getc(s) (((s)->cnt-- > 0 && (s)->ptr[0] != '\n') ? (int)*(s)->ptr++ : part_fill(s))
54
55	#define part_ungetc(c, s) ((s)->cnt++, ((s)->boundary_seen = (s)->boundary_num), (*--(s)->ptr = (c)))
56
57	extern struct part part_init(FILE infile);
58	extern char part_gets(char s, int n, struct part *part);
59