1 /* $Id: tbl_term.c,v 1.27 2014/04/20 16:46:05 schwarze Exp $ */
3 * Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2011, 2012, 2014 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.
31 static size_t term_tbl_len(size_t, void *);
32 static size_t term_tbl_strlen(const char *, void *);
33 static void tbl_char(struct termp *, char, size_t);
34 static void tbl_data(struct termp *, const struct tbl_opts *,
35 const struct tbl_dat *,
36 const struct roffcol *);
37 static size_t tbl_rulewidth(struct termp *, const struct tbl_head *);
38 static void tbl_hframe(struct termp *, const struct tbl_span *, int);
39 static void tbl_literal(struct termp *, const struct tbl_dat *,
40 const struct roffcol *);
41 static void tbl_number(struct termp *, const struct tbl_opts *,
42 const struct tbl_dat *,
43 const struct roffcol *);
44 static void tbl_hrule(struct termp *, const struct tbl_span *);
45 static void tbl_vrule(struct termp *, const struct tbl_head *);
49 term_tbl_strlen(const char *p, void *arg)
52 return(term_strlen((const struct termp *)arg, p));
56 term_tbl_len(size_t sz, void *arg)
59 return(term_len((const struct termp *)arg, sz));
63 term_tbl(struct termp *tp, const struct tbl_span *sp)
65 const struct tbl_head *hp;
66 const struct tbl_dat *dp;
69 size_t rmargin, maxrmargin;
71 rmargin = tp->rmargin;
72 maxrmargin = tp->maxrmargin;
74 tp->rmargin = tp->maxrmargin = TERM_MAXMARGIN;
76 /* Inhibit printing of spaces: we do padding ourselves. */
78 tp->flags |= TERMP_NONOSPACE;
79 tp->flags |= TERMP_NOSPACE;
82 * The first time we're invoked for a given table block,
83 * calculate the table widths and decimal positions.
86 if (TBL_SPAN_FIRST & sp->flags) {
89 tp->tbl.len = term_tbl_len;
90 tp->tbl.slen = term_tbl_strlen;
93 tblcalc(&tp->tbl, sp);
96 /* Horizontal frame at the start of boxed tables. */
98 if (TBL_SPAN_FIRST & sp->flags) {
99 if (TBL_OPT_DBOX & sp->opts->opts)
100 tbl_hframe(tp, sp, 1);
101 if (TBL_OPT_DBOX & sp->opts->opts ||
102 TBL_OPT_BOX & sp->opts->opts)
103 tbl_hframe(tp, sp, 0);
106 /* Vertical frame at the start of each row. */
108 if ((TBL_OPT_BOX | TBL_OPT_DBOX) & sp->opts->opts ||
110 term_word(tp, TBL_SPAN_HORIZ == sp->pos ||
111 TBL_SPAN_DHORIZ == sp->pos ? "+" : "|");
114 * Now print the actual data itself depending on the span type.
115 * Spanner spans get a horizontal rule; data spanners have their
116 * data printed by matching data to header.
122 case TBL_SPAN_DHORIZ:
126 /* Iterate over template headers. */
129 for (hp = sp->head; hp; hp = hp->next) {
132 * If the current data header is invoked during
133 * a spanner ("spans" > 0), don't emit anything
140 /* Separate columns. */
142 if (NULL != hp->prev)
145 col = &tp->tbl.cols[hp->ident];
146 tbl_data(tp, sp->opts, dp, col);
149 * Go to the next data cell and assign the
150 * number of subsequent spans, if applicable.
161 /* Vertical frame at the end of each row. */
163 if ((TBL_OPT_BOX | TBL_OPT_DBOX) & sp->opts->opts ||
165 term_word(tp, TBL_SPAN_HORIZ == sp->pos ||
166 TBL_SPAN_DHORIZ == sp->pos ? "+" : " |");
170 * If we're the last row, clean up after ourselves: clear the
171 * existing table configuration and set it to NULL.
174 if (TBL_SPAN_LAST & sp->flags) {
175 if (TBL_OPT_DBOX & sp->opts->opts ||
176 TBL_OPT_BOX & sp->opts->opts) {
177 tbl_hframe(tp, sp, 0);
180 if (TBL_OPT_DBOX & sp->opts->opts) {
181 tbl_hframe(tp, sp, 1);
184 assert(tp->tbl.cols);
189 tp->flags &= ~TERMP_NONOSPACE;
190 tp->rmargin = rmargin;
191 tp->maxrmargin = maxrmargin;
196 * Horizontal rules extend across the entire table.
197 * Calculate the width by iterating over columns.
200 tbl_rulewidth(struct termp *tp, const struct tbl_head *hp)
204 width = tp->tbl.cols[hp->ident].width;
206 /* Account for leading blanks. */
208 width += 2 - hp->vert;
210 /* Account for trailing blank. */
217 * Rules inside the table can be single or double
218 * and have crossings with vertical rules marked with pluses.
221 tbl_hrule(struct termp *tp, const struct tbl_span *sp)
223 const struct tbl_head *hp;
227 if (TBL_SPAN_DHORIZ == sp->pos)
230 for (hp = sp->head; hp; hp = hp->next) {
231 if (hp->prev && hp->vert)
232 tbl_char(tp, '+', hp->vert);
233 tbl_char(tp, c, tbl_rulewidth(tp, hp));
238 * Rules above and below the table are always single
239 * and have an additional plus at the beginning and end.
240 * For double frames, this function is called twice,
241 * and the outer one does not have crossings.
244 tbl_hframe(struct termp *tp, const struct tbl_span *sp, int outer)
246 const struct tbl_head *hp;
249 for (hp = sp->head; hp; hp = hp->next) {
250 if (hp->prev && hp->vert)
251 tbl_char(tp, (outer ? '-' : '+'), hp->vert);
252 tbl_char(tp, '-', tbl_rulewidth(tp, hp));
259 tbl_data(struct termp *tp, const struct tbl_opts *opts,
260 const struct tbl_dat *dp,
261 const struct roffcol *col)
265 tbl_char(tp, ASCII_NBRSP, col->width);
272 tbl_char(tp, ASCII_NBRSP, col->width);
276 case TBL_DATA_NHORIZ:
277 tbl_char(tp, '-', col->width);
279 case TBL_DATA_NDHORIZ:
281 case TBL_DATA_DHORIZ:
282 tbl_char(tp, '=', col->width);
288 switch (dp->layout->pos) {
290 tbl_char(tp, '-', col->width);
292 case TBL_CELL_DHORIZ:
293 tbl_char(tp, '=', col->width);
297 case TBL_CELL_CENTRE:
302 tbl_literal(tp, dp, col);
304 case TBL_CELL_NUMBER:
305 tbl_number(tp, opts, dp, col);
308 tbl_char(tp, ASCII_NBRSP, col->width);
317 tbl_vrule(struct termp *tp, const struct tbl_head *hp)
320 tbl_char(tp, ASCII_NBRSP, 1);
322 tbl_char(tp, '|', hp->vert);
324 tbl_char(tp, ASCII_NBRSP, 2 - hp->vert);
328 tbl_char(struct termp *tp, char c, size_t len)
336 sz = term_strlen(tp, cp);
338 for (i = 0; i < len; i += sz)
343 tbl_literal(struct termp *tp, const struct tbl_dat *dp,
344 const struct roffcol *col)
347 size_t width, len, padl, padr;
351 len = term_strlen(tp, dp->string);
353 hp = dp->layout->head->next;
355 for (spans = dp->spans; spans--; hp = hp->next)
356 width += tp->tbl.cols[hp->ident].width + 3;
358 padr = width > len ? width - len : 0;
361 switch (dp->layout->pos) {
363 padl = term_len(tp, 1);
364 padr = padr > padl ? padr - padl : 0;
366 case TBL_CELL_CENTRE:
380 tbl_char(tp, ASCII_NBRSP, padl);
381 term_word(tp, dp->string);
382 tbl_char(tp, ASCII_NBRSP, padr);
386 tbl_number(struct termp *tp, const struct tbl_opts *opts,
387 const struct tbl_dat *dp,
388 const struct roffcol *col)
392 size_t sz, psz, ssz, d, padl;
396 * See calc_data_number(). Left-pad by taking the offset of our
397 * and the maximum decimal; right-pad by the remaining amount.
402 sz = term_strlen(tp, dp->string);
404 buf[0] = opts->decimal;
407 psz = term_strlen(tp, buf);
409 if (NULL != (cp = strrchr(dp->string, opts->decimal))) {
411 for (ssz = 0, i = 0; cp != &dp->string[i]; i++) {
412 buf[0] = dp->string[i];
413 ssz += term_strlen(tp, buf);
419 padl = col->decimal - d;
421 tbl_char(tp, ASCII_NBRSP, padl);
422 term_word(tp, dp->string);
423 if (col->width > sz + padl)
424 tbl_char(tp, ASCII_NBRSP, col->width - sz - padl);