pith/filttype.h

   1 /*
   2  * $Id: filttype.h 767 2007-10-24 00:03:59Z hubert@u.washington.edu $
   3  *
   4  * ========================================================================
   5  * Copyright 2013-2022 Eduardo Chappa
   6  * Copyright 2006 University of Washington
   7  *
   8  * Licensed under the Apache License, Version 2.0 (the "License");
   9  * you may not use this file except in compliance with the License.
  10  * You may obtain a copy of the License at
  11  *
  12  *     http://www.apache.org/licenses/LICENSE-2.0
  13  *
  14  * ========================================================================
  15  */
  16
  17 #ifndef PITH_FILTTYPE_INCLUDED
  18 #define PITH_FILTTYPE_INCLUDED
  19
  20
  21 /*
  22  * Size of generic filter's input/output queue
  23  */
  24 #define GF_MAXBUF               256
  25
  26
  27 /*
  28  * typedefs of generalized filters used by gf_pipe
  29  */
  30 typedef struct filter_s {       /* type to hold data for filter function */
  31     void (*f)(struct filter_s *, int);
  32     struct filter_s *next;      /* next filter to call                   */
  33     long     n;                 /* number of chars seen                  */
  34     short    f1;                /* flags                                 */
  35     int      f2;                /* second place for flags                */
  36     unsigned char t;            /* temporary char                        */
  37     char     *line;             /* place for temporary storage           */
  38     char     *linep;            /* pointer into storage space            */
  39     void     *opt;              /* optional per instance data            */
  40     void     *data;             /* misc internal data pointer            */
  41     unsigned char queue[1 + GF_MAXBUF];
  42     short         queuein, queueout;
  43 } FILTER_S;
  44
  45
  46 typedef struct filter_insert_s {
  47     char *where;
  48     char *text;
  49     int   len;
  50     struct filter_insert_s *next;
  51 } LT_INS_S;
  52
  53
  54 typedef int  (*gf_io_t)();      /* type of get and put char function     */
  55 typedef void (*filter_t)(FILTER_S *, int);
  56 typedef int  (*linetest_t)(long, char *, LT_INS_S **, void *);
  57 typedef void (*htmlrisk_t)(void);
  58 typedef int  (*prepedtest_t)(void);
  59
  60 typedef struct filtlist_s {
  61     filter_t  filter;
  62     void     *data;
  63 } FILTLIST_S;
  64
  65
  66 typedef struct cbuf_s {
  67     unsigned char  cbuf[6];     /* used for converting to or from       */
  68     unsigned char *cbufp;       /*   locale-specific charset            */
  69     unsigned char *cbufend;
  70 } CBUF_S;
  71
  72
  73 /* exported prototypes */
  74
  75
  76 #endif /* PITH_FILTTYPE_INCLUDED */