libmandoc.h

   1 /*      $Id: libmandoc.h,v 1.21 2011/05/14 16:06:09 kristaps Exp $ */
   2 /*
   3  * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
   4  *
   5  * Permission to use, copy, modify, and distribute this software for any
   6  * purpose with or without fee is hereby granted, provided that the above
   7  * copyright notice and this permission notice appear in all copies.
   8  *
   9  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
  10  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  11  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
  12  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
  13  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
  14  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
  15  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  16  */
  17 #ifndef LIBMANDOC_H
  18 #define LIBMANDOC_H
  19
  20 enum    rofferr {
  21         ROFF_CONT, /* continue processing line */
  22         ROFF_RERUN, /* re-run roff interpreter with offset */
  23         ROFF_APPEND, /* re-run main parser, appending next line */
  24         ROFF_REPARSE, /* re-run main parser on the result */
  25         ROFF_SO, /* include another file */
  26         ROFF_IGN, /* ignore current line */
  27         ROFF_TBL, /* a table row was successfully parsed */
  28         ROFF_EQN, /* an equation was successfully parsed */
  29         ROFF_ERR /* badness: puke and stop */
  30 };
  31
  32 enum    regs {
  33         REG_nS = 0, /* nS register */
  34         REG__MAX
  35 };
  36
  37 /*
  38  * A register (struct reg) can consist of many types: this consists of
  39  * normalised types from the original string form.  For the time being,
  40  * there's only an unsigned integer type.
  41  */
  42 union   regval {
  43         unsigned  u; /* unsigned integer */
  44 };
  45
  46 /*
  47  * A single register entity.  If "set" is zero, the value of the
  48  * register should be the default one, which is per-register.  It's
  49  * assumed that callers know which type in "v" corresponds to which
  50  * register value.
  51  */
  52 struct  reg {
  53         int               set; /* whether set or not */
  54         union regval      v; /* parsed data */
  55 };
  56
  57 /*
  58  * The primary interface to setting register values is in libroff,
  59  * although libmdoc and libman from time to time will manipulate
  60  * registers (such as `.Sh SYNOPSIS' enabling REG_nS).
  61  */
  62 struct  regset {
  63         struct reg        regs[REG__MAX];
  64 };
  65
  66 __BEGIN_DECLS
  67
  68 struct  roff;
  69 struct  mdoc;
  70 struct  man;
  71
  72 void             mandoc_msg(enum mandocerr, struct mparse *,
  73                         int, int, const char *);
  74 void             mandoc_vmsg(enum mandocerr, struct mparse *,
  75                         int, int, const char *, ...);
  76 char            *mandoc_strdup(const char *);
  77 char            *mandoc_getarg(struct mparse *, char **, int, int *);
  78 char            *mandoc_normdate(struct mparse *, char *, int, int);
  79 int              mandoc_eos(const char *, size_t, int);
  80 int              mandoc_hyph(const char *, const char *);
  81 int              mandoc_getcontrol(const char *, int *);
  82 int              mandoc_strntou(const char *, size_t, int);
  83
  84 void             mdoc_free(struct mdoc *);
  85 struct  mdoc    *mdoc_alloc(struct regset *, struct mparse *);
  86 void             mdoc_reset(struct mdoc *);
  87 int              mdoc_parseln(struct mdoc *, int, char *, int);
  88 int              mdoc_endparse(struct mdoc *);
  89 int              mdoc_addspan(struct mdoc *, const struct tbl_span *);
  90 int              mdoc_addeqn(struct mdoc *, const struct eqn *);
  91
  92 void             man_free(struct man *);
  93 struct  man     *man_alloc(struct regset *, struct mparse *);
  94 void             man_reset(struct man *);
  95 int              man_parseln(struct man *, int, char *, int);
  96 int              man_endparse(struct man *);
  97 int              man_addspan(struct man *, const struct tbl_span *);
  98 int              man_addeqn(struct man *, const struct eqn *);
  99
 100 void             roff_free(struct roff *);
 101 struct roff     *roff_alloc(struct regset *, struct mparse *);
 102 void             roff_reset(struct roff *);
 103 enum rofferr     roff_parseln(struct roff *, int,
 104                         char **, size_t *, int, int *);
 105 void             roff_endparse(struct roff *);
 106
 107 const struct tbl_span   *roff_span(const struct roff *);
 108 const struct eqn        *roff_eqn(const struct roff *);
 109
 110 __END_DECLS
 111
 112 #endif /*!LIBMANDOC_H*/