1 /* $Id: tbl_layout.c,v 1.44 2017/06/27 18:25:02 schwarze Exp $ */
3 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2012, 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org>
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.
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.
20 #include <sys/types.h>
29 #include "mandoc_aux.h"
30 #include "libmandoc.h"
38 static const struct tbl_phrase keys[] = {
39 { 'c', TBL_CELL_CENTRE },
40 { 'r', TBL_CELL_RIGHT },
41 { 'l', TBL_CELL_LEFT },
42 { 'n', TBL_CELL_NUMBER },
43 { 's', TBL_CELL_SPAN },
44 { 'a', TBL_CELL_LONG },
45 { '^', TBL_CELL_DOWN },
46 { '-', TBL_CELL_HORIZ },
47 { '_', TBL_CELL_HORIZ },
48 { '=', TBL_CELL_DHORIZ }
51 #define KEYS_MAX ((int)(sizeof(keys)/sizeof(keys[0])))
53 static void mods(struct tbl_node *, struct tbl_cell *,
54 int, const char *, int *);
55 static void cell(struct tbl_node *, struct tbl_row *,
56 int, const char *, int *);
57 static struct tbl_cell *cell_alloc(struct tbl_node *, struct tbl_row *,
62 mods(struct tbl_node *tbl, struct tbl_cell *cp,
63 int ln, const char *p, int *pos)
69 while (p[*pos] == ' ' || p[*pos] == '\t')
72 /* Row delimiters and cell specifiers end modifier lists. */
74 if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
77 /* Throw away parenthesised expression. */
81 while (p[*pos] && ')' != p[*pos])
87 mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, tbl->parse,
92 /* Parse numerical spacing from modifier string. */
94 if (isdigit((unsigned char)p[*pos])) {
95 cp->spacing = strtoull(p + *pos, &endptr, 10);
100 switch (tolower((unsigned char)p[(*pos)++])) {
102 cp->flags |= TBL_CELL_BOLD;
105 cp->flags |= TBL_CELL_BALIGN;
108 cp->flags |= TBL_CELL_EQUAL;
113 cp->flags |= TBL_CELL_ITALIC;
116 mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, tbl->parse,
121 if (p[*pos] == '-' || p[*pos] == '+')
123 while (isdigit((unsigned char)p[*pos]))
127 cp->flags |= TBL_CELL_TALIGN;
130 cp->flags |= TBL_CELL_UP;
134 if (p[*pos] == '(') {
136 while (p[*pos + sz] != '\0' && p[*pos + sz] != ')')
139 while (isdigit((unsigned char)p[*pos + sz]))
143 cp->wstr = mandoc_strndup(p + *pos, sz);
150 cp->flags |= TBL_CELL_WMAX;
153 cp->flags |= TBL_CELL_WIGN;
159 mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
160 tbl->parse, ln, *pos - 1, NULL);
163 mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
164 ln, *pos - 1, "%c", p[*pos - 1]);
168 /* Ignore parenthised font names for now. */
173 /* Support only one-character font-names for now. */
175 if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
176 mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
177 ln, *pos, "TS %s", p + *pos - 1);
185 switch (p[(*pos)++]) {
188 cp->flags |= TBL_CELL_BOLD;
192 cp->flags |= TBL_CELL_ITALIC;
198 mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
199 ln, *pos - 1, "TS f%c", p[*pos - 1]);
205 cell(struct tbl_node *tbl, struct tbl_row *rp,
206 int ln, const char *p, int *pos)
211 /* Handle leading vertical lines */
213 while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
214 if (p[*pos] == '|') {
218 mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
219 tbl->parse, ln, *pos, NULL);
225 while (p[*pos] == ' ' || p[*pos] == '\t')
228 if (p[*pos] == '.' || p[*pos] == '\0')
231 /* Parse the column position (`c', `l', `r', ...). */
233 for (i = 0; i < KEYS_MAX; i++)
234 if (tolower((unsigned char)p[*pos]) == keys[i].name)
238 mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
239 ln, *pos, "%c", p[*pos]);
245 /* Special cases of spanners. */
247 if (c == TBL_CELL_SPAN) {
248 if (rp->last == NULL)
249 mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN,
250 tbl->parse, ln, *pos, NULL);
251 else if (rp->last->pos == TBL_CELL_HORIZ ||
252 rp->last->pos == TBL_CELL_DHORIZ)
254 } else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
255 mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN,
256 tbl->parse, ln, *pos, NULL);
260 /* Allocate cell then parse its modifiers. */
262 mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
266 tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
272 /* Skip whitespace before and after each cell. */
274 while (p[pos] == ' ' || p[pos] == '\t')
278 case ',': /* Next row on this input line. */
282 case '\0': /* Next row on next input line. */
284 case '.': /* End of layout. */
286 tbl->part = TBL_PART_DATA;
289 * When the layout is completely empty,
290 * default to one left-justified column.
293 if (tbl->first_row == NULL) {
294 tbl->first_row = tbl->last_row =
295 mandoc_calloc(1, sizeof(*rp));
297 if (tbl->first_row->first == NULL) {
298 mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
299 tbl->parse, ln, pos, NULL);
300 cell_alloc(tbl, tbl->first_row,
302 if (tbl->opts.lvert < tbl->first_row->vert)
303 tbl->opts.lvert = tbl->first_row->vert;
308 * Search for the widest line
309 * along the left and right margins.
312 for (rp = tbl->first_row; rp; rp = rp->next) {
313 if (tbl->opts.lvert < rp->vert)
314 tbl->opts.lvert = rp->vert;
315 if (rp->last != NULL &&
316 rp->last->col + 1 == tbl->opts.cols &&
317 tbl->opts.rvert < rp->last->vert)
318 tbl->opts.rvert = rp->last->vert;
320 /* If the last line is empty, drop it. */
322 if (rp->next != NULL &&
323 rp->next->first == NULL) {
335 * If the last line had at least one cell,
336 * start a new one; otherwise, continue it.
340 if (tbl->last_row == NULL ||
341 tbl->last_row->first != NULL) {
342 rp = mandoc_calloc(1, sizeof(*rp));
344 tbl->last_row->next = rp;
351 cell(tbl, rp, ln, p, &pos);
355 static struct tbl_cell *
356 cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
358 struct tbl_cell *p, *pp;
360 p = mandoc_calloc(1, sizeof(*p));
361 p->spacing = SIZE_MAX;
364 if ((pp = rp->last) != NULL) {
366 p->col = pp->col + 1;
371 if (tbl->opts.cols <= p->col)
372 tbl->opts.cols = p->col + 1;