tools/mpack-1.6/part.h

ec6cf3b09d Ed H*0001 /*
                0002  * Read MIME body-part, stopping on boundaries.
                0003  */
                0004 /* (C) Copyright 1994 by Carnegie Mellon University
                0005  * All Rights Reserved.
                0006  *
                0007  * Permission to use, copy, modify, distribute, and sell this software
                0008  * and its documentation for any purpose is hereby granted without
                0009  * fee, provided that the above copyright notice appear in all copies
                0010  * and that both that copyright notice and this permission notice
                0011  * appear in supporting documentation, and that the name of Carnegie
                0012  * Mellon University not be used in advertising or publicity
                0013  * pertaining to distribution of the software without specific,
                0014  * written prior permission.  Carnegie Mellon University makes no
                0015  * representations about the suitability of this software for any
                0016  * purpose.  It is provided "as is" without express or implied
                0017  * warranty.
                0018  *
                0019  * CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
                0020  * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
                0021  * AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
                0022  * FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
                0023  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
                0024  * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
                0025  * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
                0026  * SOFTWARE.
                0027  */
                0028
                0029 /* Max length of a MIME "boundary", per RFC 1521 */
                0030 #define PART_MAX_BOUNDARY_LEN 70
                0031
                0032 /* Structure describing an input file from which we read MIME */
                0033 struct part {
                0034     /* Input file */
                0035     FILE *infile;
                0036
                0037     /* Input buffer */
                0038     unsigned char *buf;
                0039     int buf_alloc;
                0040     unsigned char *ptr;
                0041     int cnt;
                0042
                0043     /* Boundary information */
                0044     char (*boundary)[PART_MAX_BOUNDARY_LEN+1];
                0045     int *boundary_length;
                0046     int boundary_alloc;
                0047     int boundary_num;
                0048     int boundary_seen;          /* Index of boundary last seen, or
                0049                                  * boundary_num if no pending boundary
                0050                                  */
                0051 };
                0052
                0053 #define part_getc(s) (((s)->cnt-- > 0 && (s)->ptr[0] != '\n') ? (int)*(s)->ptr++ : part_fill(s))
                0054
                0055 #define part_ungetc(c, s) ((s)->cnt++, ((s)->boundary_seen = (s)->boundary_num), (*--(s)->ptr = (c)))
                0056
                0057 extern struct part *part_init(FILE *infile);
                0058 extern char *part_gets(char *s, int n, struct part *part);
                0059