1 /* $Id: out.c,v 1.65 2017/06/08 18:11:22 schwarze Exp $ */
3 * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4 * Copyright (c) 2011, 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>
27 #include "mandoc_aux.h"
31 static void tblcalc_data(struct rofftbl *, struct roffcol *,
32 const struct tbl_opts *, const struct tbl_dat *,
34 static void tblcalc_literal(struct rofftbl *, struct roffcol *,
35 const struct tbl_dat *, size_t);
36 static void tblcalc_number(struct rofftbl *, struct roffcol *,
37 const struct tbl_opts *, const struct tbl_dat *);
41 * Parse the *src string and store a scaling unit into *dst.
42 * If the string doesn't specify the unit, use the default.
43 * If no default is specified, fail.
44 * Return a pointer to the byte after the last byte used,
45 * or NULL on total failure.
48 a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
52 dst->unit = def == SCALE_MAX ? SCALE_BU : def;
53 dst->scale = strtod(src, &endptr);
101 * Calculate the abstract widths and decimal positions of columns in a
102 * table. This routine allocates the columns structures then runs over
103 * all rows and cells in the table. The function pointers in "tbl" are
104 * used for the actual width calculations.
107 tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
111 const struct tbl_opts *opts;
112 const struct tbl_dat *dp;
114 size_t ewidth, xwidth;
116 int icol, maxcol, necol, nxcol, quirkcol;
119 * Allocate the master column specifiers. These will hold the
120 * widths and decimal positions for all cells in the column. It
121 * must be freed and nullified by the caller.
124 assert(NULL == tbl->cols);
125 tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
126 sizeof(struct roffcol));
129 for (maxcol = -1; sp; sp = sp->next) {
130 if (TBL_SPAN_DATA != sp->pos)
134 * Account for the data cells in the layout, matching it
135 * to data cells in the data section.
137 for (dp = sp->first; dp; dp = dp->next) {
138 /* Do not used spanned cells in the calculation. */
144 icol = dp->layout->col;
147 col = tbl->cols + icol;
148 col->flags |= dp->layout->flags;
149 if (dp->layout->flags & TBL_CELL_WIGN)
151 if (dp->layout->wstr != NULL &&
152 dp->layout->width == 0 &&
153 a2roffsu(dp->layout->wstr, &su, SCALE_EN)
156 (*tbl->sulen)(&su, tbl->arg);
157 if (col->width < dp->layout->width)
158 col->width = dp->layout->width;
159 tblcalc_data(tbl, col, opts, dp, dp->block ?
160 totalwidth / (sp->opts->cols + 1) : 0);
165 * Count columns to equalize and columns to maximize.
166 * Find maximum width of the columns to equalize.
167 * Find total width of the columns *not* to maximize.
172 for (icol = 0; icol <= maxcol; icol++) {
173 col = tbl->cols + icol;
174 if (col->flags & TBL_CELL_EQUAL) {
176 if (ewidth < col->width)
179 if (col->flags & TBL_CELL_WMAX)
182 xwidth += col->width;
186 * Equalize columns, if requested for any of them.
187 * Update total width of the columns not to maximize.
191 for (icol = 0; icol <= maxcol; icol++) {
192 col = tbl->cols + icol;
193 if ( ! (col->flags & TBL_CELL_EQUAL))
195 if (col->width == ewidth)
197 if (nxcol && totalwidth)
198 xwidth += ewidth - col->width;
204 * If there are any columns to maximize, find the total
205 * available width, deducting 3n margins between columns.
206 * Distribute the available width evenly.
209 if (nxcol && totalwidth) {
211 (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ?
212 2 : !!opts->lvert + !!opts->rvert);
213 if (xwidth >= totalwidth)
215 xwidth = totalwidth - xwidth;
218 * Emulate a bug in GNU tbl width calculation that
219 * manifests itself for large numbers of x-columns.
220 * Emulating it for 5 x-columns gives identical
221 * behaviour for up to 6 x-columns.
225 quirkcol = xwidth % nxcol + 2;
226 if (quirkcol != 3 && quirkcol != 4)
233 for (icol = 0; icol <= maxcol; icol++) {
234 col = tbl->cols + icol;
235 if ( ! (col->flags & TBL_CELL_WMAX))
237 col->width = (double)xwidth * ++necol / nxcol
239 if (necol == quirkcol)
241 ewidth += col->width;
247 tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
248 const struct tbl_opts *opts, const struct tbl_dat *dp, size_t mw)
252 /* Branch down into data sub-types. */
254 switch (dp->layout->pos) {
256 case TBL_CELL_DHORIZ:
257 sz = (*tbl->len)(1, tbl->arg);
262 case TBL_CELL_CENTRE:
265 tblcalc_literal(tbl, col, dp, mw);
267 case TBL_CELL_NUMBER:
268 tblcalc_number(tbl, col, opts, dp);
278 tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
279 const struct tbl_dat *dp, size_t mw)
281 const char *str; /* Beginning of the first line. */
282 const char *beg; /* Beginning of the current line. */
283 char *end; /* End of the current line. */
284 size_t sz; /* Length of the current line. */
286 if (dp->string == NULL || *dp->string == '\0')
288 str = mw ? mandoc_strdup(dp->string) : dp->string;
289 for (beg = str; beg != NULL && *beg != '\0'; beg = end) {
290 end = mw ? strchr(beg, ' ') : NULL;
296 sz = (*tbl->slen)(beg, tbl->arg);
305 tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
306 const struct tbl_opts *opts, const struct tbl_dat *dp)
309 size_t sz, psz, ssz, d;
315 * First calculate number width and decimal place (last + 1 for
316 * non-decimal numbers). If the stored decimal is subsequent to
317 * ours, make our size longer by that difference
318 * (right-"shifting"); similarly, if ours is subsequent the
319 * stored, then extend the stored size by the difference.
320 * Finally, re-assign the stored values.
323 str = dp->string ? dp->string : "";
324 sz = (*tbl->slen)(str, tbl->arg);
326 /* FIXME: TBL_DATA_HORIZ et al.? */
328 buf[0] = opts->decimal;
331 psz = (*tbl->slen)(buf, tbl->arg);
333 if (NULL != (cp = strrchr(str, opts->decimal))) {
335 for (ssz = 0, i = 0; cp != &str[i]; i++) {
337 ssz += (*tbl->slen)(buf, tbl->arg);
343 /* Adjust the settings for this column. */
345 if (col->decimal > d) {
346 sz += col->decimal - d;
349 col->width += d - col->decimal;
353 if (d > col->decimal)