contrib/mdocml/html.h

   1 /*      $Id: html.h,v 1.72 2015/11/07 14:01:16 schwarze Exp $ */
   2 /*
   3  * Copyright (c) 2008-2011, 2014 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
  18 enum    htmltag {
  19         TAG_HTML,
  20         TAG_HEAD,
  21         TAG_BODY,
  22         TAG_META,
  23         TAG_TITLE,
  24         TAG_DIV,
  25         TAG_H1,
  26         TAG_H2,
  27         TAG_SPAN,
  28         TAG_LINK,
  29         TAG_BR,
  30         TAG_A,
  31         TAG_TABLE,
  32         TAG_TBODY,
  33         TAG_COL,
  34         TAG_TR,
  35         TAG_TD,
  36         TAG_LI,
  37         TAG_UL,
  38         TAG_OL,
  39         TAG_DL,
  40         TAG_DT,
  41         TAG_DD,
  42         TAG_BLOCKQUOTE,
  43         TAG_PRE,
  44         TAG_B,
  45         TAG_I,
  46         TAG_CODE,
  47         TAG_SMALL,
  48         TAG_STYLE,
  49         TAG_MATH,
  50         TAG_MROW,
  51         TAG_MI,
  52         TAG_MO,
  53         TAG_MSUP,
  54         TAG_MSUB,
  55         TAG_MSUBSUP,
  56         TAG_MFRAC,
  57         TAG_MSQRT,
  58         TAG_MFENCED,
  59         TAG_MTABLE,
  60         TAG_MTR,
  61         TAG_MTD,
  62         TAG_MUNDEROVER,
  63         TAG_MUNDER,
  64         TAG_MOVER,
  65         TAG_MAX
  66 };
  67
  68 enum    htmlattr {
  69         ATTR_NAME,
  70         ATTR_REL,
  71         ATTR_HREF,
  72         ATTR_TYPE,
  73         ATTR_MEDIA,
  74         ATTR_CLASS,
  75         ATTR_STYLE,
  76         ATTR_ID,
  77         ATTR_COLSPAN,
  78         ATTR_CHARSET,
  79         ATTR_OPEN,
  80         ATTR_CLOSE,
  81         ATTR_MATHVARIANT,
  82         ATTR_MAX
  83 };
  84
  85 enum    htmlfont {
  86         HTMLFONT_NONE = 0,
  87         HTMLFONT_BOLD,
  88         HTMLFONT_ITALIC,
  89         HTMLFONT_BI,
  90         HTMLFONT_MAX
  91 };
  92
  93 struct  tag {
  94         struct tag       *next;
  95         enum htmltag      tag;
  96 };
  97
  98 struct tagq {
  99         struct tag       *head;
 100 };
 101
 102 struct  htmlpair {
 103         enum htmlattr     key;
 104         const char       *val;
 105 };
 106
 107 #define PAIR_INIT(p, t, v) \
 108         do { \
 109                 (p)->key = (t); \
 110                 (p)->val = (v); \
 111         } while (/* CONSTCOND */ 0)
 112
 113 #define PAIR_ID_INIT(p, v)      PAIR_INIT(p, ATTR_ID, v)
 114 #define PAIR_CLASS_INIT(p, v)   PAIR_INIT(p, ATTR_CLASS, v)
 115 #define PAIR_HREF_INIT(p, v)    PAIR_INIT(p, ATTR_HREF, v)
 116 #define PAIR_STYLE_INIT(p, h)   PAIR_INIT(p, ATTR_STYLE, (h)->buf)
 117
 118 struct  html {
 119         int               flags;
 120 #define HTML_NOSPACE     (1 << 0) /* suppress next space */
 121 #define HTML_IGNDELIM    (1 << 1)
 122 #define HTML_KEEP        (1 << 2)
 123 #define HTML_PREKEEP     (1 << 3)
 124 #define HTML_NONOSPACE   (1 << 4) /* never add spaces */
 125 #define HTML_LITERAL     (1 << 5) /* literal (e.g., <PRE>) context */
 126 #define HTML_SKIPCHAR    (1 << 6) /* skip the next character */
 127 #define HTML_NOSPLIT     (1 << 7) /* do not break line before .An */
 128 #define HTML_SPLIT       (1 << 8) /* break line before .An */
 129 #define HTML_NONEWLINE   (1 << 9) /* No line break in nofill mode. */
 130         struct tagq       tags; /* stack of open tags */
 131         struct rofftbl    tbl; /* current table */
 132         struct tag       *tblt; /* current open table scope */
 133         char             *base_man; /* base for manpage href */
 134         char             *base_includes; /* base for include href */
 135         char             *style; /* style-sheet URI */
 136         char              buf[BUFSIZ]; /* see bufcat and friends */
 137         size_t            buflen;
 138         struct tag       *metaf; /* current open font scope */
 139         enum htmlfont     metal; /* last used font */
 140         enum htmlfont     metac; /* current font mode */
 141         int               oflags; /* output options */
 142 #define HTML_FRAGMENT    (1 << 0) /* don't emit HTML/HEAD/BODY */
 143 };
 144
 145
 146 struct  tbl_span;
 147 struct  eqn;
 148
 149 void              print_gen_decls(struct html *);
 150 void              print_gen_head(struct html *);
 151 struct tag       *print_otag(struct html *, enum htmltag,
 152                                 int, const struct htmlpair *);
 153 void              print_tagq(struct html *, const struct tag *);
 154 void              print_stagq(struct html *, const struct tag *);
 155 void              print_text(struct html *, const char *);
 156 void              print_tblclose(struct html *);
 157 void              print_tbl(struct html *, const struct tbl_span *);
 158 void              print_eqn(struct html *, const struct eqn *);
 159 void              print_paragraph(struct html *);
 160
 161 #if __GNUC__ - 0 >= 4
 162 __attribute__((__format__ (__printf__, 2, 3)))
 163 #endif
 164 void              bufcat_fmt(struct html *, const char *, ...);
 165 void              bufcat(struct html *, const char *);
 166 void              bufcat_id(struct html *, const char *);
 167 void              bufcat_style(struct html *,
 168                         const char *, const char *);
 169 void              bufcat_su(struct html *, const char *,
 170                         const struct roffsu *);
 171 void              bufinit(struct html *);
 172 void              buffmt_man(struct html *,
 173                         const char *, const char *);
 174 void              buffmt_includes(struct html *, const char *);
 175
 176 int               html_strlen(const char *);