1 /* $Id: mandoc.h,v 1.99 2012/02/16 20:51:31 joerg Exp $ */
2 /*
3 * Copyright (c) 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 MANDOC_H
18 #define MANDOC_H
19
20 #define ASCII_NBRSP 31 /* non-breaking space */
21 #define ASCII_HYPH 30 /* breakable hyphen */
22
23 /*
24 * Status level. This refers to both internal status (i.e., whilst
25 * running, when warnings/errors are reported) and an indicator of a
26 * threshold of when to halt (when said internal state exceeds the
27 * threshold).
28 */
29 enum mandoclevel {
30 MANDOCLEVEL_OK = 0,
31 MANDOCLEVEL_RESERVED,
32 MANDOCLEVEL_WARNING, /* warnings: syntax, whitespace, etc. */
33 MANDOCLEVEL_ERROR, /* input has been thrown away */
34 MANDOCLEVEL_FATAL, /* input is borked */
35 MANDOCLEVEL_BADARG, /* bad argument in invocation */
36 MANDOCLEVEL_SYSERR, /* system error */
37 MANDOCLEVEL_MAX
38 };
39
40 /*
41 * All possible things that can go wrong within a parse, be it libroff,
42 * libmdoc, or libman.
43 */
44 enum mandocerr {
45 MANDOCERR_OK,
46
47 MANDOCERR_WARNING, /* ===== start of warnings ===== */
48
49 /* related to the prologue */
50 MANDOCERR_NOTITLE, /* no title in document */
51 MANDOCERR_UPPERCASE, /* document title should be all caps */
52 MANDOCERR_BADMSEC, /* unknown manual section */
53 MANDOCERR_NODATE, /* date missing, using today's date */
54 MANDOCERR_BADDATE, /* cannot parse date, using it verbatim */
55 MANDOCERR_PROLOGOOO, /* prologue macros out of order */
56 MANDOCERR_PROLOGREP, /* duplicate prologue macro */
57 MANDOCERR_BADPROLOG, /* macro not allowed in prologue */
58 MANDOCERR_BADBODY, /* macro not allowed in body */
59
60 /* related to document structure */
61 MANDOCERR_SO, /* .so is fragile, better use ln(1) */
62 MANDOCERR_NAMESECFIRST, /* NAME section must come first */
63 MANDOCERR_BADNAMESEC, /* bad NAME section contents */
64 MANDOCERR_NONAME, /* manual name not yet set */
65 MANDOCERR_SECOOO, /* sections out of conventional order */
66 MANDOCERR_SECREP, /* duplicate section name */
67 MANDOCERR_SECMSEC, /* section not in conventional manual section */
68
69 /* related to macros and nesting */
70 MANDOCERR_MACROOBS, /* skipping obsolete macro */
71 MANDOCERR_IGNPAR, /* skipping paragraph macro */
72 MANDOCERR_IGNNS, /* skipping no-space macro */
73 MANDOCERR_SCOPENEST, /* blocks badly nested */
74 MANDOCERR_CHILD, /* child violates parent syntax */
75 MANDOCERR_NESTEDDISP, /* nested displays are not portable */
76 MANDOCERR_SCOPEREP, /* already in literal mode */
77 MANDOCERR_LINESCOPE, /* line scope broken */
78
79 /* related to missing macro arguments */
80 MANDOCERR_MACROEMPTY, /* skipping empty macro */
81 MANDOCERR_ARGCWARN, /* argument count wrong */
82 MANDOCERR_DISPTYPE, /* missing display type */
83 MANDOCERR_LISTFIRST, /* list type must come first */
84 MANDOCERR_NOWIDTHARG, /* tag lists require a width argument */
85 MANDOCERR_FONTTYPE, /* missing font type */
86 MANDOCERR_WNOSCOPE, /* skipping end of block that is not open */
87
88 /* related to bad macro arguments */
89 MANDOCERR_IGNARGV, /* skipping argument */
90 MANDOCERR_ARGVREP, /* duplicate argument */
91 MANDOCERR_DISPREP, /* duplicate display type */
92 MANDOCERR_LISTREP, /* duplicate list type */
93 MANDOCERR_BADATT, /* unknown AT&T UNIX version */
94 MANDOCERR_BADBOOL, /* bad Boolean value */
95 MANDOCERR_BADFONT, /* unknown font */
96 MANDOCERR_BADSTANDARD, /* unknown standard specifier */
97 MANDOCERR_BADWIDTH, /* bad width argument */
98
99 /* related to plain text */
100 MANDOCERR_NOBLANKLN, /* blank line in non-literal context */
101 MANDOCERR_BADTAB, /* tab in non-literal context */
102 MANDOCERR_EOLNSPACE, /* end of line whitespace */
103 MANDOCERR_BADCOMMENT, /* bad comment style */
104 MANDOCERR_BADESCAPE, /* unknown escape sequence */
105 MANDOCERR_BADQUOTE, /* unterminated quoted string */
106
107 /* related to equations */
108 MANDOCERR_EQNQUOTE, /* unexpected literal in equation */
109
110 MANDOCERR_ERROR, /* ===== start of errors ===== */
111
112 /* related to equations */
113 MANDOCERR_EQNNSCOPE, /* unexpected equation scope closure*/
114 MANDOCERR_EQNSCOPE, /* equation scope open on exit */
115 MANDOCERR_EQNBADSCOPE, /* overlapping equation scopes */
116 MANDOCERR_EQNEOF, /* unexpected end of equation */
117 MANDOCERR_EQNSYNT, /* equation syntax error */
118
119 /* related to tables */
120 MANDOCERR_TBL, /* bad table syntax */
121 MANDOCERR_TBLOPT, /* bad table option */
122 MANDOCERR_TBLLAYOUT, /* bad table layout */
123 MANDOCERR_TBLNOLAYOUT, /* no table layout cells specified */
124 MANDOCERR_TBLNODATA, /* no table data cells specified */
125 MANDOCERR_TBLIGNDATA, /* ignore data in cell */
126 MANDOCERR_TBLBLOCK, /* data block still open */
127 MANDOCERR_TBLEXTRADAT, /* ignoring extra data cells */
128
129 MANDOCERR_ROFFLOOP, /* input stack limit exceeded, infinite loop? */
130 MANDOCERR_BADCHAR, /* skipping bad character */
131 MANDOCERR_NAMESC, /* escaped character not allowed in a name */
132 MANDOCERR_NOTEXT, /* skipping text before the first section header */
133 MANDOCERR_MACRO, /* skipping unknown macro */
134 MANDOCERR_REQUEST, /* NOT IMPLEMENTED: skipping request */
135 MANDOCERR_ARGCOUNT, /* argument count wrong */
136 MANDOCERR_NOSCOPE, /* skipping end of block that is not open */
137 MANDOCERR_SCOPEBROKEN, /* missing end of block */
138 MANDOCERR_SCOPEEXIT, /* scope open on exit */
139 MANDOCERR_UNAME, /* uname(3) system call failed */
140 /* FIXME: merge following with MANDOCERR_ARGCOUNT */
141 MANDOCERR_NOARGS, /* macro requires line argument(s) */
142 MANDOCERR_NOBODY, /* macro requires body argument(s) */
143 MANDOCERR_NOARGV, /* macro requires argument(s) */
144 MANDOCERR_LISTTYPE, /* missing list type */
145 MANDOCERR_ARGSLOST, /* line argument(s) will be lost */
146 MANDOCERR_BODYLOST, /* body argument(s) will be lost */
147
148 MANDOCERR_FATAL, /* ===== start of fatal errors ===== */
149
150 MANDOCERR_NOTMANUAL, /* manual isn't really a manual */
151 MANDOCERR_COLUMNS, /* column syntax is inconsistent */
152 MANDOCERR_BADDISP, /* NOT IMPLEMENTED: .Bd -file */
153 MANDOCERR_SYNTARGVCOUNT, /* argument count wrong, violates syntax */
154 MANDOCERR_SYNTCHILD, /* child violates parent syntax */
155 MANDOCERR_SYNTARGCOUNT, /* argument count wrong, violates syntax */
156 MANDOCERR_SOPATH, /* NOT IMPLEMENTED: .so with absolute path or ".." */
157 MANDOCERR_NODOCBODY, /* no document body */
158 MANDOCERR_NODOCPROLOG, /* no document prologue */
159 MANDOCERR_MEM, /* static buffer exhausted */
160 MANDOCERR_MAX
161 };
162
163 struct tbl {
164 char tab; /* cell-separator */
165 char decimal; /* decimal point */
166 int linesize;
167 int opts;
168 #define TBL_OPT_CENTRE (1 << 0)
169 #define TBL_OPT_EXPAND (1 << 1)
170 #define TBL_OPT_BOX (1 << 2)
171 #define TBL_OPT_DBOX (1 << 3)
172 #define TBL_OPT_ALLBOX (1 << 4)
173 #define TBL_OPT_NOKEEP (1 << 5)
174 #define TBL_OPT_NOSPACE (1 << 6)
175 int cols; /* number of columns */
176 };
177
178 enum tbl_headt {
179 TBL_HEAD_DATA, /* plug in data from tbl_dat */
180 TBL_HEAD_VERT, /* vertical spacer */
181 TBL_HEAD_DVERT /* double-vertical spacer */
182 };
183
184 /*
185 * The head of a table specifies all of its columns. When formatting a
186 * tbl_span, iterate over these and plug in data from the tbl_span when
187 * appropriate, using tbl_cell as a guide to placement.
188 */
189 struct tbl_head {
190 enum tbl_headt pos;
191 int ident; /* 0 <= unique id < cols */
192 struct tbl_head *next;
193 struct tbl_head *prev;
194 };
195
196 enum tbl_cellt {
197 TBL_CELL_CENTRE, /* c, C */
198 TBL_CELL_RIGHT, /* r, R */
199 TBL_CELL_LEFT, /* l, L */
200 TBL_CELL_NUMBER, /* n, N */
201 TBL_CELL_SPAN, /* s, S */
202 TBL_CELL_LONG, /* a, A */
203 TBL_CELL_DOWN, /* ^ */
204 TBL_CELL_HORIZ, /* _, - */
205 TBL_CELL_DHORIZ, /* = */
206 TBL_CELL_VERT, /* | */
207 TBL_CELL_DVERT, /* || */
208 TBL_CELL_MAX
209 };
210
211 /*
212 * A cell in a layout row.
213 */
214 struct tbl_cell {
215 struct tbl_cell *next;
216 enum tbl_cellt pos;
217 size_t spacing;
218 int flags;
219 #define TBL_CELL_TALIGN (1 << 0) /* t, T */
220 #define TBL_CELL_BALIGN (1 << 1) /* d, D */
221 #define TBL_CELL_BOLD (1 << 2) /* fB, B, b */
222 #define TBL_CELL_ITALIC (1 << 3) /* fI, I, i */
223 #define TBL_CELL_EQUAL (1 << 4) /* e, E */
224 #define TBL_CELL_UP (1 << 5) /* u, U */
225 #define TBL_CELL_WIGN (1 << 6) /* z, Z */
226 struct tbl_head *head;
227 };
228
229 /*
230 * A layout row.
231 */
232 struct tbl_row {
233 struct tbl_row *next;
234 struct tbl_cell *first;
235 struct tbl_cell *last;
236 };
237
238 enum tbl_datt {
239 TBL_DATA_NONE, /* has no data */
240 TBL_DATA_DATA, /* consists of data/string */
241 TBL_DATA_HORIZ, /* horizontal line */
242 TBL_DATA_DHORIZ, /* double-horizontal line */
243 TBL_DATA_NHORIZ, /* squeezed horizontal line */
244 TBL_DATA_NDHORIZ /* squeezed double-horizontal line */
245 };
246
247 /*
248 * A cell within a row of data. The "string" field contains the actual
249 * string value that's in the cell. The rest is layout.
250 */
251 struct tbl_dat {
252 struct tbl_cell *layout; /* layout cell */
253 int spans; /* how many spans follow */
254 struct tbl_dat *next;
255 char *string; /* data (NULL if not TBL_DATA_DATA) */
256 enum tbl_datt pos;
257 };
258
259 enum tbl_spant {
260 TBL_SPAN_DATA, /* span consists of data */
261 TBL_SPAN_HORIZ, /* span is horizontal line */
262 TBL_SPAN_DHORIZ /* span is double horizontal line */
263 };
264
265 /*
266 * A row of data in a table.
267 */
268 struct tbl_span {
269 struct tbl *tbl;
270 struct tbl_head *head;
271 struct tbl_row *layout; /* layout row */
272 struct tbl_dat *first;
273 struct tbl_dat *last;
274 int line; /* parse line */
275 int flags;
276 #define TBL_SPAN_FIRST (1 << 0)
277 #define TBL_SPAN_LAST (1 << 1)
278 enum tbl_spant pos;
279 struct tbl_span *next;
280 };
281
282 enum eqn_boxt {
283 EQN_ROOT, /* root of parse tree */
284 EQN_TEXT, /* text (number, variable, whatever) */
285 EQN_SUBEXPR, /* nested `eqn' subexpression */
286 EQN_LIST, /* subexpressions list */
287 EQN_MATRIX /* matrix subexpression */
288 };
289
290 enum eqn_markt {
291 EQNMARK_NONE = 0,
292 EQNMARK_DOT,
293 EQNMARK_DOTDOT,
294 EQNMARK_HAT,
295 EQNMARK_TILDE,
296 EQNMARK_VEC,
297 EQNMARK_DYAD,
298 EQNMARK_BAR,
299 EQNMARK_UNDER,
300 EQNMARK__MAX
301 };
302
303 enum eqn_fontt {
304 EQNFONT_NONE = 0,
305 EQNFONT_ROMAN,
306 EQNFONT_BOLD,
307 EQNFONT_FAT,
308 EQNFONT_ITALIC,
309 EQNFONT__MAX
310 };
311
312 enum eqn_post {
313 EQNPOS_NONE = 0,
314 EQNPOS_OVER,
315 EQNPOS_SUP,
316 EQNPOS_SUB,
317 EQNPOS_TO,
318 EQNPOS_FROM,
319 EQNPOS__MAX
320 };
321
322 enum eqn_pilet {
323 EQNPILE_NONE = 0,
324 EQNPILE_PILE,
325 EQNPILE_CPILE,
326 EQNPILE_RPILE,
327 EQNPILE_LPILE,
328 EQNPILE_COL,
329 EQNPILE_CCOL,
330 EQNPILE_RCOL,
331 EQNPILE_LCOL,
332 EQNPILE__MAX
333 };
334
335 /*
336 * A "box" is a parsed mathematical expression as defined by the eqn.7
337 * grammar.
338 */
339 struct eqn_box {
340 int size; /* font size of expression */
341 #define EQN_DEFSIZE INT_MIN
342 enum eqn_boxt type; /* type of node */
343 struct eqn_box *first; /* first child node */
344 struct eqn_box *last; /* last child node */
345 struct eqn_box *next; /* node sibling */
346 struct eqn_box *parent; /* node sibling */
347 char *text; /* text (or NULL) */
348 char *left;
349 char *right;
350 enum eqn_post pos; /* position of next box */
351 enum eqn_markt mark; /* a mark about the box */
352 enum eqn_fontt font; /* font of box */
353 enum eqn_pilet pile; /* equation piling */
354 };
355
356 /*
357 * An equation consists of a tree of expressions starting at a given
358 * line and position.
359 */
360 struct eqn {
361 char *name; /* identifier (or NULL) */
362 struct eqn_box *root; /* root mathematical expression */
363 int ln; /* invocation line */
364 int pos; /* invocation position */
365 };
366
367 /*
368 * The type of parse sequence. This value is usually passed via the
369 * mandoc(1) command line of -man and -mdoc. It's almost exclusively
370 * -mandoc but the others have been retained for compatibility.
371 */
372 enum mparset {
373 MPARSE_AUTO, /* magically determine the document type */
374 MPARSE_MDOC, /* assume -mdoc */
375 MPARSE_MAN /* assume -man */
376 };
377
378 enum mandoc_esc {
379 ESCAPE_ERROR = 0, /* bail! unparsable escape */
380 ESCAPE_IGNORE, /* escape to be ignored */
381 ESCAPE_SPECIAL, /* a regular special character */
382 ESCAPE_FONT, /* a generic font mode */
383 ESCAPE_FONTBOLD, /* bold font mode */
384 ESCAPE_FONTITALIC, /* italic font mode */
385 ESCAPE_FONTROMAN, /* roman font mode */
386 ESCAPE_FONTPREV, /* previous font mode */
387 ESCAPE_NUMBERED, /* a numbered glyph */
388 ESCAPE_UNICODE, /* a unicode codepoint */
389 ESCAPE_NOSPACE /* suppress space if the last on a line */
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,
417 enum mandoclevel, mandocmsg, void *);
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*/