1/*	$Id: html.h,v 1.87 2017/07/08 14:51:04 schwarze Exp $ */
2/*
3 * Copyright (c) 2008-2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
5 *
6 * Permission to use, copy, modify, and distribute this software for any
7 * purpose with or without fee is hereby granted, provided that the above
8 * copyright notice and this permission notice appear in all copies.
9 *
10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
17 */
18
19enum	htmltag {
20	TAG_HTML,
21	TAG_HEAD,
22	TAG_BODY,
23	TAG_META,
24	TAG_TITLE,
25	TAG_DIV,
26	TAG_H1,
27	TAG_H2,
28	TAG_SPAN,
29	TAG_LINK,
30	TAG_BR,
31	TAG_A,
32	TAG_TABLE,
33	TAG_COLGROUP,
34	TAG_COL,
35	TAG_TR,
36	TAG_TD,
37	TAG_LI,
38	TAG_UL,
39	TAG_OL,
40	TAG_DL,
41	TAG_DT,
42	TAG_DD,
43	TAG_PRE,
44	TAG_VAR,
45	TAG_CITE,
46	TAG_B,
47	TAG_I,
48	TAG_CODE,
49	TAG_SMALL,
50	TAG_STYLE,
51	TAG_MATH,
52	TAG_MROW,
53	TAG_MI,
54	TAG_MN,
55	TAG_MO,
56	TAG_MSUP,
57	TAG_MSUB,
58	TAG_MSUBSUP,
59	TAG_MFRAC,
60	TAG_MSQRT,
61	TAG_MFENCED,
62	TAG_MTABLE,
63	TAG_MTR,
64	TAG_MTD,
65	TAG_MUNDEROVER,
66	TAG_MUNDER,
67	TAG_MOVER,
68	TAG_MAX
69};
70
71enum	htmlfont {
72	HTMLFONT_NONE = 0,
73	HTMLFONT_BOLD,
74	HTMLFONT_ITALIC,
75	HTMLFONT_BI,
76	HTMLFONT_MAX
77};
78
79struct	tag {
80	struct tag	 *next;
81	enum htmltag	  tag;
82};
83
84struct	html {
85	int		  flags;
86#define	HTML_NOSPACE	 (1 << 0) /* suppress next space */
87#define	HTML_IGNDELIM	 (1 << 1)
88#define	HTML_KEEP	 (1 << 2)
89#define	HTML_PREKEEP	 (1 << 3)
90#define	HTML_NONOSPACE	 (1 << 4) /* never add spaces */
91#define	HTML_LITERAL	 (1 << 5) /* literal (e.g., <PRE>) context */
92#define	HTML_SKIPCHAR	 (1 << 6) /* skip the next character */
93#define	HTML_NOSPLIT	 (1 << 7) /* do not break line before .An */
94#define	HTML_SPLIT	 (1 << 8) /* break line before .An */
95#define	HTML_NONEWLINE	 (1 << 9) /* No line break in nofill mode. */
96#define	HTML_BUFFER	 (1 << 10) /* Collect a word to see if it fits. */
97	size_t		  indent; /* current output indentation level */
98	int		  noindent; /* indent disabled by <pre> */
99	size_t		  col; /* current output byte position */
100	size_t		  bufcol; /* current buf byte position */
101	char		  buf[80]; /* output buffer */
102	struct tag	 *tag; /* last open tag */
103	struct rofftbl	  tbl; /* current table */
104	struct tag	 *tblt; /* current open table scope */
105	char		 *base_man; /* base for manpage href */
106	char		 *base_includes; /* base for include href */
107	char		 *style; /* style-sheet URI */
108	struct tag	 *metaf; /* current open font scope */
109	enum htmlfont	  metal; /* last used font */
110	enum htmlfont	  metac; /* current font mode */
111	int		  oflags; /* output options */
112#define	HTML_FRAGMENT	 (1 << 0) /* don't emit HTML/HEAD/BODY */
113};
114
115
116struct	roff_node;
117struct	tbl_span;
118struct	eqn_box;
119
120void		  roff_html_pre(struct html *, const struct roff_node *);
121
122void		  print_gen_decls(struct html *);
123void		  print_gen_head(struct html *);
124struct tag	 *print_otag(struct html *, enum htmltag, const char *, ...);
125void		  print_tagq(struct html *, const struct tag *);
126void		  print_stagq(struct html *, const struct tag *);
127void		  print_text(struct html *, const char *);
128void		  print_tblclose(struct html *);
129void		  print_tbl(struct html *, const struct tbl_span *);
130void		  print_eqn(struct html *, const struct eqn_box *);
131void		  print_paragraph(struct html *);
132void		  print_endline(struct html *);
133
134char		 *html_make_id(const struct roff_node *);
135int		  html_strlen(const char *);
136