xref: /titanic_41/usr/src/cmd/mandoc/mandoc.h (revision ffb8ebfab4941f959e7caea93ecfb348cfa3515e)
1 /*	$Id: mandoc.h,v 1.112 2013/12/30 18:30:32 schwarze Exp $ */
2 /*
3  * Copyright (c) 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4  * Copyright (c) 2012, 2013 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 #ifndef MANDOC_H
19 #define MANDOC_H
20 
21 #define ASCII_NBRSP	 31  /* non-breaking space */
22 #define	ASCII_HYPH	 30  /* breakable hyphen */
23 
24 /*
25  * Status level.  This refers to both internal status (i.e., whilst
26  * running, when warnings/errors are reported) and an indicator of a
27  * threshold of when to halt (when said internal state exceeds the
28  * threshold).
29  */
30 enum	mandoclevel {
31 	MANDOCLEVEL_OK = 0,
32 	MANDOCLEVEL_RESERVED,
33 	MANDOCLEVEL_WARNING, /* warnings: syntax, whitespace, etc. */
34 	MANDOCLEVEL_ERROR, /* input has been thrown away */
35 	MANDOCLEVEL_FATAL, /* input is borked */
36 	MANDOCLEVEL_BADARG, /* bad argument in invocation */
37 	MANDOCLEVEL_SYSERR, /* system error */
38 	MANDOCLEVEL_MAX
39 };
40 
41 /*
42  * All possible things that can go wrong within a parse, be it libroff,
43  * libmdoc, or libman.
44  */
45 enum	mandocerr {
46 	MANDOCERR_OK,
47 
48 	MANDOCERR_WARNING, /* ===== start of warnings ===== */
49 
50 	/* related to the prologue */
51 	MANDOCERR_NOTITLE, /* no title in document */
52 	MANDOCERR_UPPERCASE, /* document title should be all caps */
53 	MANDOCERR_BADMSEC, /* unknown manual section */
54 	MANDOCERR_BADVOLARCH, /* unknown manual volume or arch */
55 	MANDOCERR_NODATE, /* date missing, using today's date */
56 	MANDOCERR_BADDATE, /* cannot parse date, using it verbatim */
57 	MANDOCERR_PROLOGOOO, /* prologue macros out of order */
58 	MANDOCERR_PROLOGREP, /* duplicate prologue macro */
59 	MANDOCERR_BADPROLOG, /* macro not allowed in prologue */
60 	MANDOCERR_BADBODY, /* macro not allowed in body */
61 
62 	/* related to document structure */
63 	MANDOCERR_SO, /* .so is fragile, better use ln(1) */
64 	MANDOCERR_NAMESECFIRST, /* NAME section must come first */
65 	MANDOCERR_BADNAMESEC, /* bad NAME section contents */
66 	MANDOCERR_SECOOO, /* sections out of conventional order */
67 	MANDOCERR_SECREP, /* duplicate section name */
68 	MANDOCERR_SECMSEC, /* section header suited to sections ... */
69 
70 	/* related to macros and nesting */
71 	MANDOCERR_MACROOBS, /* skipping obsolete macro */
72 	MANDOCERR_IGNPAR, /* skipping paragraph macro */
73 	MANDOCERR_MOVEPAR, /* moving paragraph macro out of list */
74 	MANDOCERR_IGNNS, /* skipping no-space macro */
75 	MANDOCERR_SCOPENEST, /* blocks badly nested */
76 	MANDOCERR_CHILD, /* child violates parent syntax */
77 	MANDOCERR_NESTEDDISP, /* nested displays are not portable */
78 	MANDOCERR_SCOPEREP, /* already in literal mode */
79 	MANDOCERR_LINESCOPE, /* line scope broken */
80 
81 	/* related to missing macro arguments */
82 	MANDOCERR_MACROEMPTY, /* skipping empty macro */
83 	MANDOCERR_ARGCWARN, /* argument count wrong */
84 	MANDOCERR_DISPTYPE, /* missing display type */
85 	MANDOCERR_LISTFIRST, /* list type must come first */
86 	MANDOCERR_NOWIDTHARG, /* tag lists require a width argument */
87 	MANDOCERR_FONTTYPE, /* missing font type */
88 	MANDOCERR_WNOSCOPE, /* skipping end of block that is not open */
89 
90 	/* related to bad macro arguments */
91 	MANDOCERR_IGNARGV, /* skipping argument */
92 	MANDOCERR_ARGVREP, /* duplicate argument */
93 	MANDOCERR_DISPREP, /* duplicate display type */
94 	MANDOCERR_LISTREP, /* duplicate list type */
95 	MANDOCERR_BADATT, /* unknown AT&T UNIX version */
96 	MANDOCERR_BADBOOL, /* bad Boolean value */
97 	MANDOCERR_BADFONT, /* unknown font */
98 	MANDOCERR_BADSTANDARD, /* unknown standard specifier */
99 	MANDOCERR_BADWIDTH, /* bad width argument */
100 
101 	/* related to plain text */
102 	MANDOCERR_NOBLANKLN, /* blank line in non-literal context */
103 	MANDOCERR_BADTAB, /* tab in non-literal context */
104 	MANDOCERR_EOLNSPACE, /* end of line whitespace */
105 	MANDOCERR_BADCOMMENT, /* bad comment style */
106 	MANDOCERR_BADESCAPE, /* unknown escape sequence */
107 	MANDOCERR_BADQUOTE, /* unterminated quoted string */
108 
109 	/* related to equations */
110 	MANDOCERR_EQNQUOTE, /* unexpected literal in equation */
111 
112 	MANDOCERR_ERROR, /* ===== start of errors ===== */
113 
114 	/* related to equations */
115 	MANDOCERR_EQNNSCOPE, /* unexpected equation scope closure*/
116 	MANDOCERR_EQNSCOPE, /* equation scope open on exit */
117 	MANDOCERR_EQNBADSCOPE, /* overlapping equation scopes */
118 	MANDOCERR_EQNEOF, /* unexpected end of equation */
119 	MANDOCERR_EQNSYNT, /* equation syntax error */
120 
121 	/* related to tables */
122 	MANDOCERR_TBL, /* bad table syntax */
123 	MANDOCERR_TBLOPT, /* bad table option */
124 	MANDOCERR_TBLLAYOUT, /* bad table layout */
125 	MANDOCERR_TBLNOLAYOUT, /* no table layout cells specified */
126 	MANDOCERR_TBLNODATA, /* no table data cells specified */
127 	MANDOCERR_TBLIGNDATA, /* ignore data in cell */
128 	MANDOCERR_TBLBLOCK, /* data block still open */
129 	MANDOCERR_TBLEXTRADAT, /* ignoring extra data cells */
130 
131 	MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */
132 	MANDOCERR_BADCHAR, /* skipping bad character */
133 	MANDOCERR_NAMESC, /* escaped character not allowed in a name */
134 	MANDOCERR_NONAME, /* manual name not yet set */
135 	MANDOCERR_NOTEXT, /* skipping text before the first section header */
136 	MANDOCERR_MACRO, /* skipping unknown macro */
137 	MANDOCERR_REQUEST, /* NOT IMPLEMENTED: skipping request */
138 	MANDOCERR_ARGCOUNT, /* argument count wrong */
139 	MANDOCERR_STRAYTA, /* skipping column outside column list */
140 	MANDOCERR_NOSCOPE, /* skipping end of block that is not open */
141 	MANDOCERR_SCOPEBROKEN, /* missing end of block */
142 	MANDOCERR_SCOPEEXIT, /* scope open on exit */
143 	MANDOCERR_UNAME, /* uname(3) system call failed */
144 	/* FIXME: merge following with MANDOCERR_ARGCOUNT */
145 	MANDOCERR_NOARGS, /* macro requires line argument(s) */
146 	MANDOCERR_NOBODY, /* macro requires body argument(s) */
147 	MANDOCERR_NOARGV, /* macro requires argument(s) */
148 	MANDOCERR_NUMERIC, /* request requires a numeric argument */
149 	MANDOCERR_LISTTYPE, /* missing list type */
150 	MANDOCERR_ARGSLOST, /* line argument(s) will be lost */
151 	MANDOCERR_BODYLOST, /* body argument(s) will be lost */
152 
153 	MANDOCERR_FATAL, /* ===== start of fatal errors ===== */
154 
155 	MANDOCERR_NOTMANUAL, /* manual isn't really a manual */
156 	MANDOCERR_COLUMNS, /* column syntax is inconsistent */
157 	MANDOCERR_BADDISP, /* NOT IMPLEMENTED: .Bd -file */
158 	MANDOCERR_SYNTARGVCOUNT, /* argument count wrong, violates syntax */
159 	MANDOCERR_SYNTCHILD, /* child violates parent syntax */
160 	MANDOCERR_SYNTARGCOUNT, /* argument count wrong, violates syntax */
161 	MANDOCERR_SOPATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */
162 	MANDOCERR_NODOCBODY, /* no document body */
163 	MANDOCERR_NODOCPROLOG, /* no document prologue */
164 	MANDOCERR_MEM, /* static buffer exhausted */
165 	MANDOCERR_MAX
166 };
167 
168 struct	tbl_opts {
169 	char		  tab; /* cell-separator */
170 	char		  decimal; /* decimal point */
171 	int		  linesize;
172 	int		  opts;
173 #define	TBL_OPT_CENTRE	 (1 << 0)
174 #define	TBL_OPT_EXPAND	 (1 << 1)
175 #define	TBL_OPT_BOX	 (1 << 2)
176 #define	TBL_OPT_DBOX	 (1 << 3)
177 #define	TBL_OPT_ALLBOX	 (1 << 4)
178 #define	TBL_OPT_NOKEEP	 (1 << 5)
179 #define	TBL_OPT_NOSPACE	 (1 << 6)
180 	int		  cols; /* number of columns */
181 };
182 
183 /*
184  * The head of a table specifies all of its columns.  When formatting a
185  * tbl_span, iterate over these and plug in data from the tbl_span when
186  * appropriate, using tbl_cell as a guide to placement.
187  */
188 struct	tbl_head {
189 	int		  ident; /* 0 <= unique id < cols */
190 	int		  vert; /* width of preceding vertical line */
191 	struct tbl_head	 *next;
192 	struct tbl_head	 *prev;
193 };
194 
195 enum	tbl_cellt {
196 	TBL_CELL_CENTRE, /* c, C */
197 	TBL_CELL_RIGHT, /* r, R */
198 	TBL_CELL_LEFT, /* l, L */
199 	TBL_CELL_NUMBER, /* n, N */
200 	TBL_CELL_SPAN, /* s, S */
201 	TBL_CELL_LONG, /* a, A */
202 	TBL_CELL_DOWN, /* ^ */
203 	TBL_CELL_HORIZ, /* _, - */
204 	TBL_CELL_DHORIZ, /* = */
205 	TBL_CELL_MAX
206 };
207 
208 /*
209  * A cell in a layout row.
210  */
211 struct	tbl_cell {
212 	struct tbl_cell	 *next;
213 	int		  vert; /* width of preceding vertical line */
214 	enum tbl_cellt	  pos;
215 	size_t		  spacing;
216 	int		  flags;
217 #define	TBL_CELL_TALIGN	 (1 << 0) /* t, T */
218 #define	TBL_CELL_BALIGN	 (1 << 1) /* d, D */
219 #define	TBL_CELL_BOLD	 (1 << 2) /* fB, B, b */
220 #define	TBL_CELL_ITALIC	 (1 << 3) /* fI, I, i */
221 #define	TBL_CELL_EQUAL	 (1 << 4) /* e, E */
222 #define	TBL_CELL_UP	 (1 << 5) /* u, U */
223 #define	TBL_CELL_WIGN	 (1 << 6) /* z, Z */
224 	struct tbl_head	 *head;
225 };
226 
227 /*
228  * A layout row.
229  */
230 struct	tbl_row {
231 	struct tbl_row	 *next;
232 	struct tbl_cell	 *first;
233 	struct tbl_cell	 *last;
234 };
235 
236 enum	tbl_datt {
237 	TBL_DATA_NONE, /* has no data */
238 	TBL_DATA_DATA, /* consists of data/string */
239 	TBL_DATA_HORIZ, /* horizontal line */
240 	TBL_DATA_DHORIZ, /* double-horizontal line */
241 	TBL_DATA_NHORIZ, /* squeezed horizontal line */
242 	TBL_DATA_NDHORIZ /* squeezed double-horizontal line */
243 };
244 
245 /*
246  * A cell within a row of data.  The "string" field contains the actual
247  * string value that's in the cell.  The rest is layout.
248  */
249 struct	tbl_dat {
250 	struct tbl_cell	 *layout; /* layout cell */
251 	int		  spans; /* how many spans follow */
252 	struct tbl_dat	 *next;
253 	char		 *string; /* data (NULL if not TBL_DATA_DATA) */
254 	enum tbl_datt	  pos;
255 };
256 
257 enum	tbl_spant {
258 	TBL_SPAN_DATA, /* span consists of data */
259 	TBL_SPAN_HORIZ, /* span is horizontal line */
260 	TBL_SPAN_DHORIZ /* span is double horizontal line */
261 };
262 
263 /*
264  * A row of data in a table.
265  */
266 struct	tbl_span {
267 	struct tbl_opts	 *opts;
268 	struct tbl_head	 *head;
269 	struct tbl_row	 *layout; /* layout row */
270 	struct tbl_dat	 *first;
271 	struct tbl_dat	 *last;
272 	int		  line; /* parse line */
273 	int		  flags;
274 #define	TBL_SPAN_FIRST	 (1 << 0)
275 #define	TBL_SPAN_LAST	 (1 << 1)
276 	enum tbl_spant	  pos;
277 	struct tbl_span	 *next;
278 };
279 
280 enum	eqn_boxt {
281 	EQN_ROOT, /* root of parse tree */
282 	EQN_TEXT, /* text (number, variable, whatever) */
283 	EQN_SUBEXPR, /* nested `eqn' subexpression */
284 	EQN_LIST, /* subexpressions list */
285 	EQN_MATRIX /* matrix subexpression */
286 };
287 
288 enum	eqn_markt {
289 	EQNMARK_NONE = 0,
290 	EQNMARK_DOT,
291 	EQNMARK_DOTDOT,
292 	EQNMARK_HAT,
293 	EQNMARK_TILDE,
294 	EQNMARK_VEC,
295 	EQNMARK_DYAD,
296 	EQNMARK_BAR,
297 	EQNMARK_UNDER,
298 	EQNMARK__MAX
299 };
300 
301 enum	eqn_fontt {
302 	EQNFONT_NONE = 0,
303 	EQNFONT_ROMAN,
304 	EQNFONT_BOLD,
305 	EQNFONT_FAT,
306 	EQNFONT_ITALIC,
307 	EQNFONT__MAX
308 };
309 
310 enum	eqn_post {
311 	EQNPOS_NONE = 0,
312 	EQNPOS_OVER,
313 	EQNPOS_SUP,
314 	EQNPOS_SUB,
315 	EQNPOS_TO,
316 	EQNPOS_FROM,
317 	EQNPOS__MAX
318 };
319 
320 enum	eqn_pilet {
321 	EQNPILE_NONE = 0,
322 	EQNPILE_PILE,
323 	EQNPILE_CPILE,
324 	EQNPILE_RPILE,
325 	EQNPILE_LPILE,
326 	EQNPILE_COL,
327 	EQNPILE_CCOL,
328 	EQNPILE_RCOL,
329 	EQNPILE_LCOL,
330 	EQNPILE__MAX
331 };
332 
333  /*
334  * A "box" is a parsed mathematical expression as defined by the eqn.7
335  * grammar.
336  */
337 struct	eqn_box {
338 	int		  size; /* font size of expression */
339 #define	EQN_DEFSIZE	  INT_MIN
340 	enum eqn_boxt	  type; /* type of node */
341 	struct eqn_box	 *first; /* first child node */
342 	struct eqn_box	 *last; /* last child node */
343 	struct eqn_box	 *next; /* node sibling */
344 	struct eqn_box	 *parent; /* node sibling */
345 	char		 *text; /* text (or NULL) */
346 	char		 *left;
347 	char		 *right;
348 	enum eqn_post	  pos; /* position of next box */
349 	enum eqn_markt	  mark; /* a mark about the box */
350 	enum eqn_fontt	  font; /* font of box */
351 	enum eqn_pilet	  pile; /* equation piling */
352 };
353 
354 /*
355  * An equation consists of a tree of expressions starting at a given
356  * line and position.
357  */
358 struct	eqn {
359 	char		 *name; /* identifier (or NULL) */
360 	struct eqn_box	 *root; /* root mathematical expression */
361 	int		  ln; /* invocation line */
362 	int		  pos; /* invocation position */
363 };
364 
365 /*
366  * The type of parse sequence.  This value is usually passed via the
367  * mandoc(1) command line of -man and -mdoc.  It's almost exclusively
368  * -mandoc but the others have been retained for compatibility.
369  */
370 enum	mparset {
371 	MPARSE_AUTO, /* magically determine the document type */
372 	MPARSE_MDOC, /* assume -mdoc */
373 	MPARSE_MAN /* assume -man */
374 };
375 
376 enum	mandoc_esc {
377 	ESCAPE_ERROR = 0, /* bail! unparsable escape */
378 	ESCAPE_IGNORE, /* escape to be ignored */
379 	ESCAPE_SPECIAL, /* a regular special character */
380 	ESCAPE_FONT, /* a generic font mode */
381 	ESCAPE_FONTBOLD, /* bold font mode */
382 	ESCAPE_FONTITALIC, /* italic font mode */
383 	ESCAPE_FONTBI, /* bold italic font mode */
384 	ESCAPE_FONTROMAN, /* roman font mode */
385 	ESCAPE_FONTPREV, /* previous font mode */
386 	ESCAPE_NUMBERED, /* a numbered glyph */
387 	ESCAPE_UNICODE, /* a unicode codepoint */
388 	ESCAPE_NOSPACE, /* suppress space if the last on a line */
389 	ESCAPE_SKIPCHAR /* skip the next character */
390 };
391 
392 typedef	void	(*mandocmsg)(enum mandocerr, enum mandoclevel,
393 			const char *, int, int, const char *);
394 
395 struct	mparse;
396 struct	mchars;
397 struct	mdoc;
398 struct	man;
399 
400 __BEGIN_DECLS
401 
402 void		 *mandoc_calloc(size_t, size_t);
403 enum mandoc_esc	  mandoc_escape(const char **, const char **, int *);
404 void		 *mandoc_malloc(size_t);
405 void		 *mandoc_realloc(void *, size_t);
406 char		 *mandoc_strdup(const char *);
407 char		 *mandoc_strndup(const char *, size_t);
408 struct mchars	 *mchars_alloc(void);
409 void		  mchars_free(struct mchars *);
410 char	 	  mchars_num2char(const char *, size_t);
411 int		  mchars_num2uc(const char *, size_t);
412 int		  mchars_spec2cp(const struct mchars *,
413 			const char *, size_t);
414 const char	 *mchars_spec2str(const struct mchars *,
415 			const char *, size_t, size_t *);
416 struct mparse	 *mparse_alloc(enum mparset, enum mandoclevel,
417 			mandocmsg, void *, char *);
418 void		  mparse_free(struct mparse *);
419 void		  mparse_keep(struct mparse *);
420 enum mandoclevel  mparse_readfd(struct mparse *, int, const char *);
421 enum mandoclevel  mparse_readmem(struct mparse *, const void *, size_t,
422 			const char *);
423 void		  mparse_reset(struct mparse *);
424 void		  mparse_result(struct mparse *,
425 			struct mdoc **, struct man **);
426 const char	 *mparse_getkeep(const struct mparse *);
427 const char	 *mparse_strerror(enum mandocerr);
428 const char	 *mparse_strlevel(enum mandoclevel);
429 
430 __END_DECLS
431 
432 #endif /*!MANDOC_H*/
433