1 /* $Id: tbl_layout.c,v 1.48 2018/12/14 05:18:03 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"
32 #include "libmandoc.h"
40 static const struct tbl_phrase keys[] = {
41 { 'c', TBL_CELL_CENTRE },
42 { 'r', TBL_CELL_RIGHT },
43 { 'l', TBL_CELL_LEFT },
44 { 'n', TBL_CELL_NUMBER },
45 { 's', TBL_CELL_SPAN },
46 { 'a', TBL_CELL_LONG },
47 { '^', TBL_CELL_DOWN },
48 { '-', TBL_CELL_HORIZ },
49 { '_', TBL_CELL_HORIZ },
50 { '=', TBL_CELL_DHORIZ }
53 #define KEYS_MAX ((int)(sizeof(keys)/sizeof(keys[0])))
55 static void mods(struct tbl_node *, struct tbl_cell *,
56 int, const char *, int *);
57 static void cell(struct tbl_node *, struct tbl_row *,
58 int, const char *, int *);
59 static struct tbl_cell *cell_alloc(struct tbl_node *, struct tbl_row *,
64 mods(struct tbl_node *tbl, struct tbl_cell *cp,
65 int ln, const char *p, int *pos)
71 while (p[*pos] == ' ' || p[*pos] == '\t')
74 /* Row delimiters and cell specifiers end modifier lists. */
76 if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
79 /* Throw away parenthesised expression. */
83 while (p[*pos] && ')' != p[*pos])
89 mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, ln, *pos, NULL);
93 /* Parse numerical spacing from modifier string. */
95 if (isdigit((unsigned char)p[*pos])) {
96 cp->spacing = strtoull(p + *pos, &endptr, 10);
101 switch (tolower((unsigned char)p[(*pos)++])) {
103 cp->flags |= TBL_CELL_BOLD;
106 cp->flags |= TBL_CELL_BALIGN;
109 cp->flags |= TBL_CELL_EQUAL;
114 cp->flags |= TBL_CELL_ITALIC;
117 mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, ln, *pos, "m");
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,
163 mandoc_msg(MANDOCERR_TBLLAYOUT_CHAR,
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_msg(MANDOCERR_FT_BAD,
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_msg(MANDOCERR_FT_BAD,
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,
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_msg(MANDOCERR_TBLLAYOUT_CHAR,
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, ln, *pos, NULL);
250 else if (rp->last->pos == TBL_CELL_HORIZ ||
251 rp->last->pos == TBL_CELL_DHORIZ)
253 } else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
254 mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN, ln, *pos, NULL);
258 /* Allocate cell then parse its modifiers. */
260 mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
264 tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
270 /* Skip whitespace before and after each cell. */
272 while (p[pos] == ' ' || p[pos] == '\t')
276 case ',': /* Next row on this input line. */
280 case '\0': /* Next row on next input line. */
282 case '.': /* End of layout. */
284 tbl->part = TBL_PART_DATA;
287 * When the layout is completely empty,
288 * default to one left-justified column.
291 if (tbl->first_row == NULL) {
292 tbl->first_row = tbl->last_row =
293 mandoc_calloc(1, sizeof(*rp));
295 if (tbl->first_row->first == NULL) {
296 mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
298 cell_alloc(tbl, tbl->first_row,
300 if (tbl->opts.lvert < tbl->first_row->vert)
301 tbl->opts.lvert = tbl->first_row->vert;
306 * Search for the widest line
307 * along the left and right margins.
310 for (rp = tbl->first_row; rp; rp = rp->next) {
311 if (tbl->opts.lvert < rp->vert)
312 tbl->opts.lvert = rp->vert;
313 if (rp->last != NULL &&
314 rp->last->col + 1 == tbl->opts.cols &&
315 tbl->opts.rvert < rp->last->vert)
316 tbl->opts.rvert = rp->last->vert;
318 /* If the last line is empty, drop it. */
320 if (rp->next != NULL &&
321 rp->next->first == NULL) {
333 * If the last line had at least one cell,
334 * start a new one; otherwise, continue it.
338 if (tbl->last_row == NULL ||
339 tbl->last_row->first != NULL) {
340 rp = mandoc_calloc(1, sizeof(*rp));
342 tbl->last_row->next = rp;
349 cell(tbl, rp, ln, p, &pos);
353 static struct tbl_cell *
354 cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
356 struct tbl_cell *p, *pp;
358 p = mandoc_calloc(1, sizeof(*p));
359 p->spacing = SIZE_MAX;
362 if ((pp = rp->last) != NULL) {
364 p->col = pp->col + 1;
369 if (tbl->opts.cols <= p->col)
370 tbl->opts.cols = p->col + 1;