pith/filttype.h

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