1 /* $Id: tbl_layout.c,v 1.41 2015/10/12 00:08:16 schwarze Exp $ */
3 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2012, 2014, 2015 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>
28 #include "mandoc_aux.h"
29 #include "libmandoc.h"
37 static const struct tbl_phrase keys[] = {
38 { 'c', TBL_CELL_CENTRE },
39 { 'r', TBL_CELL_RIGHT },
40 { 'l', TBL_CELL_LEFT },
41 { 'n', TBL_CELL_NUMBER },
42 { 's', TBL_CELL_SPAN },
43 { 'a', TBL_CELL_LONG },
44 { '^', TBL_CELL_DOWN },
45 { '-', TBL_CELL_HORIZ },
46 { '_', TBL_CELL_HORIZ },
47 { '=', TBL_CELL_DHORIZ }
50 #define KEYS_MAX ((int)(sizeof(keys)/sizeof(keys[0])))
52 static void mods(struct tbl_node *, struct tbl_cell *,
53 int, const char *, int *);
54 static void cell(struct tbl_node *, struct tbl_row *,
55 int, const char *, int *);
56 static struct tbl_cell *cell_alloc(struct tbl_node *, struct tbl_row *,
61 mods(struct tbl_node *tbl, struct tbl_cell *cp,
62 int ln, const char *p, int *pos)
67 while (p[*pos] == ' ' || p[*pos] == '\t')
70 /* Row delimiters and cell specifiers end modifier lists. */
72 if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
75 /* Throw away parenthesised expression. */
79 while (p[*pos] && ')' != p[*pos])
85 mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, tbl->parse,
90 /* Parse numerical spacing from modifier string. */
92 if (isdigit((unsigned char)p[*pos])) {
93 cp->spacing = strtoull(p + *pos, &endptr, 10);
98 switch (tolower((unsigned char)p[(*pos)++])) {
100 cp->flags |= TBL_CELL_BOLD;
103 cp->flags |= TBL_CELL_BALIGN;
106 cp->flags |= TBL_CELL_EQUAL;
111 cp->flags |= TBL_CELL_ITALIC;
114 mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, tbl->parse,
119 if (p[*pos] == '-' || p[*pos] == '+')
121 while (isdigit((unsigned char)p[*pos]))
125 cp->flags |= TBL_CELL_TALIGN;
128 cp->flags |= TBL_CELL_UP;
130 case 'w': /* XXX for now, ignore minimal column width */
133 cp->flags |= TBL_CELL_WMAX;
136 cp->flags |= TBL_CELL_WIGN;
142 mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
143 tbl->parse, ln, *pos - 1, NULL);
146 mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
147 ln, *pos - 1, "%c", p[*pos - 1]);
151 /* Ignore parenthised font names for now. */
156 /* Support only one-character font-names for now. */
158 if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
159 mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
160 ln, *pos, "TS %s", p + *pos - 1);
168 switch (p[(*pos)++]) {
171 cp->flags |= TBL_CELL_BOLD;
175 cp->flags |= TBL_CELL_ITALIC;
181 mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
182 ln, *pos - 1, "TS f%c", p[*pos - 1]);
188 cell(struct tbl_node *tbl, struct tbl_row *rp,
189 int ln, const char *p, int *pos)
194 /* Handle leading vertical lines */
196 while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
197 if (p[*pos] == '|') {
201 mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
202 tbl->parse, ln, *pos, NULL);
208 while (p[*pos] == ' ' || p[*pos] == '\t')
211 if (p[*pos] == '.' || p[*pos] == '\0')
214 /* Parse the column position (`c', `l', `r', ...). */
216 for (i = 0; i < KEYS_MAX; i++)
217 if (tolower((unsigned char)p[*pos]) == keys[i].name)
221 mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
222 ln, *pos, "%c", p[*pos]);
228 /* Special cases of spanners. */
230 if (c == TBL_CELL_SPAN) {
231 if (rp->last == NULL)
232 mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN,
233 tbl->parse, ln, *pos, NULL);
234 else if (rp->last->pos == TBL_CELL_HORIZ ||
235 rp->last->pos == TBL_CELL_DHORIZ)
237 } else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
238 mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN,
239 tbl->parse, ln, *pos, NULL);
243 /* Allocate cell then parse its modifiers. */
245 mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
249 tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
255 /* Skip whitespace before and after each cell. */
257 while (p[pos] == ' ' || p[pos] == '\t')
261 case ',': /* Next row on this input line. */
265 case '\0': /* Next row on next input line. */
267 case '.': /* End of layout. */
269 tbl->part = TBL_PART_DATA;
272 * When the layout is completely empty,
273 * default to one left-justified column.
276 if (tbl->first_row == NULL) {
277 tbl->first_row = tbl->last_row =
278 mandoc_calloc(1, sizeof(*rp));
280 if (tbl->first_row->first == NULL) {
281 mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
282 tbl->parse, ln, pos, NULL);
283 cell_alloc(tbl, tbl->first_row,
289 * Search for the widest line
290 * along the left and right margins.
293 for (rp = tbl->first_row; rp; rp = rp->next) {
294 if (tbl->opts.lvert < rp->vert)
295 tbl->opts.lvert = rp->vert;
296 if (rp->last != NULL &&
297 rp->last->col + 1 == tbl->opts.cols &&
298 tbl->opts.rvert < rp->last->vert)
299 tbl->opts.rvert = rp->last->vert;
301 /* If the last line is empty, drop it. */
303 if (rp->next != NULL &&
304 rp->next->first == NULL) {
316 * If the last line had at least one cell,
317 * start a new one; otherwise, continue it.
321 if (tbl->last_row == NULL ||
322 tbl->last_row->first != NULL) {
323 rp = mandoc_calloc(1, sizeof(*rp));
325 tbl->last_row->next = rp;
332 cell(tbl, rp, ln, p, &pos);
336 static struct tbl_cell *
337 cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
339 struct tbl_cell *p, *pp;
341 p = mandoc_calloc(1, sizeof(*p));
344 if ((pp = rp->last) != NULL) {
346 p->col = pp->col + 1;
351 if (tbl->opts.cols <= p->col)
352 tbl->opts.cols = p->col + 1;