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*/