1*1fddd665Sschwarze /* $OpenBSD: out.c,v 1.57 2021/10/17 21:03:05 schwarze Exp $ */
24175bdabSschwarze /*
3ec04407bSschwarze * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
4e968d739Sschwarze * Copyright (c) 2011, 2014, 2015, 2017, 2018, 2019, 2021
5e968d739Sschwarze * Ingo Schwarze <schwarze@openbsd.org>
64175bdabSschwarze *
74175bdabSschwarze * Permission to use, copy, modify, and distribute this software for any
84175bdabSschwarze * purpose with or without fee is hereby granted, provided that the above
94175bdabSschwarze * copyright notice and this permission notice appear in all copies.
104175bdabSschwarze *
114175bdabSschwarze * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
124175bdabSschwarze * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
134175bdabSschwarze * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
144175bdabSschwarze * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
154175bdabSschwarze * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
164175bdabSschwarze * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
174175bdabSschwarze * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
184175bdabSschwarze */
194175bdabSschwarze #include <sys/types.h>
204175bdabSschwarze
21b822ca0dSschwarze #include <assert.h>
22a7d5d23dSschwarze #include <ctype.h>
23e8a65004Sschwarze #include <stdint.h>
247d063611Sschwarze #include <stdio.h>
254175bdabSschwarze #include <stdlib.h>
26b822ca0dSschwarze #include <string.h>
27b822ca0dSschwarze #include <time.h>
284175bdabSschwarze
294f4f7972Sschwarze #include "mandoc_aux.h"
307d063611Sschwarze #include "mandoc.h"
31fae2491eSschwarze #include "tbl.h"
324175bdabSschwarze #include "out.h"
334175bdabSschwarze
349f0607b7Sschwarze struct tbl_colgroup {
359f0607b7Sschwarze struct tbl_colgroup *next;
369f0607b7Sschwarze size_t wanted;
379f0607b7Sschwarze int startcol;
389f0607b7Sschwarze int endcol;
399f0607b7Sschwarze };
409f0607b7Sschwarze
419f0607b7Sschwarze static size_t tblcalc_data(struct rofftbl *, struct roffcol *,
422c3e66c4Sschwarze const struct tbl_opts *, const struct tbl_dat *,
432c3e66c4Sschwarze size_t);
449f0607b7Sschwarze static size_t tblcalc_literal(struct rofftbl *, struct roffcol *,
452c3e66c4Sschwarze const struct tbl_dat *, size_t);
469f0607b7Sschwarze static size_t tblcalc_number(struct rofftbl *, struct roffcol *,
47c7497e73Sschwarze const struct tbl_opts *, const struct tbl_dat *);
48ec04407bSschwarze
4949aff9f8Sschwarze
504175bdabSschwarze /*
51a09d548bSschwarze * Parse the *src string and store a scaling unit into *dst.
52a09d548bSschwarze * If the string doesn't specify the unit, use the default.
53a09d548bSschwarze * If no default is specified, fail.
54ecd22486Sschwarze * Return a pointer to the byte after the last byte used,
55ecd22486Sschwarze * or NULL on total failure.
564175bdabSschwarze */
57ecd22486Sschwarze const char *
a2roffsu(const char * src,struct roffsu * dst,enum roffscale def)584175bdabSschwarze a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
594175bdabSschwarze {
60a09d548bSschwarze char *endptr;
614175bdabSschwarze
6284f230baSschwarze dst->unit = def == SCALE_MAX ? SCALE_BU : def;
6384f230baSschwarze dst->scale = strtod(src, &endptr);
6484f230baSschwarze if (endptr == src)
65ecd22486Sschwarze return NULL;
664175bdabSschwarze
6784f230baSschwarze switch (*endptr++) {
6849aff9f8Sschwarze case 'c':
6984f230baSschwarze dst->unit = SCALE_CM;
704175bdabSschwarze break;
7149aff9f8Sschwarze case 'i':
7284f230baSschwarze dst->unit = SCALE_IN;
734175bdabSschwarze break;
7449aff9f8Sschwarze case 'f':
7584f230baSschwarze dst->unit = SCALE_FS;
764175bdabSschwarze break;
7749aff9f8Sschwarze case 'M':
7884f230baSschwarze dst->unit = SCALE_MM;
7984f230baSschwarze break;
8084f230baSschwarze case 'm':
8184f230baSschwarze dst->unit = SCALE_EM;
824175bdabSschwarze break;
8349aff9f8Sschwarze case 'n':
8484f230baSschwarze dst->unit = SCALE_EN;
854175bdabSschwarze break;
8684f230baSschwarze case 'P':
8784f230baSschwarze dst->unit = SCALE_PC;
8884f230baSschwarze break;
8984f230baSschwarze case 'p':
9084f230baSschwarze dst->unit = SCALE_PT;
9184f230baSschwarze break;
9284f230baSschwarze case 'u':
9384f230baSschwarze dst->unit = SCALE_BU;
9484f230baSschwarze break;
9584f230baSschwarze case 'v':
9684f230baSschwarze dst->unit = SCALE_VS;
9784f230baSschwarze break;
984175bdabSschwarze default:
9923b9ae24Sschwarze endptr--;
10084f230baSschwarze if (SCALE_MAX == def)
101ecd22486Sschwarze return NULL;
10284f230baSschwarze dst->unit = def;
10384f230baSschwarze break;
1044175bdabSschwarze }
105ecd22486Sschwarze return endptr;
1064175bdabSschwarze }
107b822ca0dSschwarze
108ec04407bSschwarze /*
109ec04407bSschwarze * Calculate the abstract widths and decimal positions of columns in a
110ec04407bSschwarze * table. This routine allocates the columns structures then runs over
111ec04407bSschwarze * all rows and cells in the table. The function pointers in "tbl" are
112ec04407bSschwarze * used for the actual width calculations.
113ec04407bSschwarze */
114ec04407bSschwarze void
tblcalc(struct rofftbl * tbl,const struct tbl_span * sp_first,size_t offset,size_t rmargin)1159f0607b7Sschwarze tblcalc(struct rofftbl *tbl, const struct tbl_span *sp_first,
116d1c3ec49Sschwarze size_t offset, size_t rmargin)
117ec04407bSschwarze {
1182c3e66c4Sschwarze struct roffsu su;
11999d91ba7Sschwarze const struct tbl_opts *opts;
1209f0607b7Sschwarze const struct tbl_span *sp;
121ec04407bSschwarze const struct tbl_dat *dp;
122ec04407bSschwarze struct roffcol *col;
1239f0607b7Sschwarze struct tbl_colgroup *first_group, **gp, *g;
1247d11b6e3Sschwarze size_t *colwidth;
1259f0607b7Sschwarze size_t ewidth, min1, min2, wanted, width, xwidth;
1269f0607b7Sschwarze int done, icol, maxcol, necol, nxcol, quirkcol;
127ec04407bSschwarze
128ec04407bSschwarze /*
129ec04407bSschwarze * Allocate the master column specifiers. These will hold the
130ec04407bSschwarze * widths and decimal positions for all cells in the column. It
131ec04407bSschwarze * must be freed and nullified by the caller.
132ec04407bSschwarze */
133ec04407bSschwarze
1349f0607b7Sschwarze assert(tbl->cols == NULL);
1359f0607b7Sschwarze tbl->cols = mandoc_calloc((size_t)sp_first->opts->cols,
13649aff9f8Sschwarze sizeof(struct roffcol));
1379f0607b7Sschwarze opts = sp_first->opts;
138ec04407bSschwarze
1399f0607b7Sschwarze maxcol = -1;
1409f0607b7Sschwarze first_group = NULL;
1419f0607b7Sschwarze for (sp = sp_first; sp != NULL; sp = sp->next) {
1429f0607b7Sschwarze if (sp->pos != TBL_SPAN_DATA)
143ec04407bSschwarze continue;
1449f0607b7Sschwarze
145ec04407bSschwarze /*
146ec04407bSschwarze * Account for the data cells in the layout, matching it
147ec04407bSschwarze * to data cells in the data section.
148ec04407bSschwarze */
1499f0607b7Sschwarze
1509f0607b7Sschwarze for (dp = sp->first; dp != NULL; dp = dp->next) {
1515f6d1ba3Sschwarze icol = dp->layout->col;
152f6d3ad1cSschwarze while (maxcol < icol + dp->hspans)
153e8a65004Sschwarze tbl->cols[++maxcol].spacing = SIZE_MAX;
15446fa2066Sschwarze col = tbl->cols + icol;
15546fa2066Sschwarze col->flags |= dp->layout->flags;
15646fa2066Sschwarze if (dp->layout->flags & TBL_CELL_WIGN)
15746fa2066Sschwarze continue;
1589f0607b7Sschwarze
1599f0607b7Sschwarze /* Handle explicit width specifications. */
1609f0607b7Sschwarze
1612c3e66c4Sschwarze if (dp->layout->wstr != NULL &&
1622c3e66c4Sschwarze dp->layout->width == 0 &&
1632c3e66c4Sschwarze a2roffsu(dp->layout->wstr, &su, SCALE_EN)
1642c3e66c4Sschwarze != NULL)
1652c3e66c4Sschwarze dp->layout->width =
1662c3e66c4Sschwarze (*tbl->sulen)(&su, tbl->arg);
1672c3e66c4Sschwarze if (col->width < dp->layout->width)
1682c3e66c4Sschwarze col->width = dp->layout->width;
169e8a65004Sschwarze if (dp->layout->spacing != SIZE_MAX &&
170e8a65004Sschwarze (col->spacing == SIZE_MAX ||
171e8a65004Sschwarze col->spacing < dp->layout->spacing))
172e8a65004Sschwarze col->spacing = dp->layout->spacing;
1739f0607b7Sschwarze
1749f0607b7Sschwarze /*
1759f0607b7Sschwarze * Calculate an automatic width.
1769f0607b7Sschwarze * Except for spanning cells, apply it.
1779f0607b7Sschwarze */
1789f0607b7Sschwarze
1799f0607b7Sschwarze width = tblcalc_data(tbl,
1809f0607b7Sschwarze dp->hspans == 0 ? col : NULL,
1819f0607b7Sschwarze opts, dp,
182238123d0Sschwarze dp->block == 0 ? 0 :
183238123d0Sschwarze dp->layout->width ? dp->layout->width :
184e6d4e954Sschwarze rmargin ? (rmargin + sp->opts->cols / 2)
185e6d4e954Sschwarze / (sp->opts->cols + 1) : 0);
1869f0607b7Sschwarze if (dp->hspans == 0)
1879f0607b7Sschwarze continue;
1889f0607b7Sschwarze
1899f0607b7Sschwarze /*
1901d61b63dSschwarze * Build a singly linked list
1919f0607b7Sschwarze * of all groups of columns joined by spans,
1929f0607b7Sschwarze * recording the minimum width for each group.
1939f0607b7Sschwarze */
1949f0607b7Sschwarze
1951d61b63dSschwarze gp = &first_group;
1961d61b63dSschwarze while (*gp != NULL && ((*gp)->startcol != icol ||
1971d61b63dSschwarze (*gp)->endcol != icol + dp->hspans))
1989f0607b7Sschwarze gp = &(*gp)->next;
1991d61b63dSschwarze if (*gp == NULL) {
2009f0607b7Sschwarze g = mandoc_malloc(sizeof(*g));
2019f0607b7Sschwarze g->next = *gp;
2029f0607b7Sschwarze g->wanted = width;
2039f0607b7Sschwarze g->startcol = icol;
2049f0607b7Sschwarze g->endcol = icol + dp->hspans;
2059f0607b7Sschwarze *gp = g;
2069f0607b7Sschwarze } else if ((*gp)->wanted < width)
2079f0607b7Sschwarze (*gp)->wanted = width;
208ec04407bSschwarze }
209ec04407bSschwarze }
21046fa2066Sschwarze
21146fa2066Sschwarze /*
212ea3fff40Sschwarze * The minimum width of columns explicitly specified
213ea3fff40Sschwarze * in the layout is 1n.
2149f0607b7Sschwarze */
2159f0607b7Sschwarze
216ea3fff40Sschwarze if (maxcol < sp_first->opts->cols - 1)
217ea3fff40Sschwarze maxcol = sp_first->opts->cols - 1;
218ea3fff40Sschwarze for (icol = 0; icol <= maxcol; icol++) {
219ea3fff40Sschwarze col = tbl->cols + icol;
220ea3fff40Sschwarze if (col->width < 1)
221ea3fff40Sschwarze col->width = 1;
222ea3fff40Sschwarze
223ea3fff40Sschwarze /*
224ea3fff40Sschwarze * Column spacings are needed for span width
225ea3fff40Sschwarze * calculations, so set the default values now.
226ea3fff40Sschwarze */
227ea3fff40Sschwarze
228ea3fff40Sschwarze if (col->spacing == SIZE_MAX || icol == maxcol)
229ea3fff40Sschwarze col->spacing = 3;
230ea3fff40Sschwarze }
2319f0607b7Sschwarze
2329f0607b7Sschwarze /*
2339f0607b7Sschwarze * Replace the minimum widths with the missing widths,
2349f0607b7Sschwarze * and dismiss groups that are already wide enough.
2359f0607b7Sschwarze */
2369f0607b7Sschwarze
2379f0607b7Sschwarze gp = &first_group;
2389f0607b7Sschwarze while ((g = *gp) != NULL) {
2399f0607b7Sschwarze done = 0;
2409f0607b7Sschwarze for (icol = g->startcol; icol <= g->endcol; icol++) {
2419f0607b7Sschwarze width = tbl->cols[icol].width;
2429f0607b7Sschwarze if (icol < g->endcol)
2439f0607b7Sschwarze width += tbl->cols[icol].spacing;
2449f0607b7Sschwarze if (g->wanted <= width) {
2459f0607b7Sschwarze done = 1;
2469f0607b7Sschwarze break;
2479f0607b7Sschwarze } else
248*1fddd665Sschwarze g->wanted -= width;
2499f0607b7Sschwarze }
2509f0607b7Sschwarze if (done) {
2519f0607b7Sschwarze *gp = g->next;
2529f0607b7Sschwarze free(g);
2539f0607b7Sschwarze } else
254*1fddd665Sschwarze gp = &g->next;
2559f0607b7Sschwarze }
2569f0607b7Sschwarze
2577d11b6e3Sschwarze colwidth = mandoc_reallocarray(NULL, maxcol + 1, sizeof(*colwidth));
2589f0607b7Sschwarze while (first_group != NULL) {
2599f0607b7Sschwarze
2609f0607b7Sschwarze /*
2617d11b6e3Sschwarze * Rebuild the array of the widths of all columns
2627d11b6e3Sschwarze * participating in spans that require expansion.
2637d11b6e3Sschwarze */
2647d11b6e3Sschwarze
2657d11b6e3Sschwarze for (icol = 0; icol <= maxcol; icol++)
2667d11b6e3Sschwarze colwidth[icol] = SIZE_MAX;
2677d11b6e3Sschwarze for (g = first_group; g != NULL; g = g->next)
2687d11b6e3Sschwarze for (icol = g->startcol; icol <= g->endcol; icol++)
2697d11b6e3Sschwarze colwidth[icol] = tbl->cols[icol].width;
2707d11b6e3Sschwarze
2717d11b6e3Sschwarze /*
2729f0607b7Sschwarze * Find the smallest and second smallest column width
2739f0607b7Sschwarze * among the columns which may need expamsion.
2749f0607b7Sschwarze */
2759f0607b7Sschwarze
2769f0607b7Sschwarze min1 = min2 = SIZE_MAX;
2779f0607b7Sschwarze for (icol = 0; icol <= maxcol; icol++) {
2787d11b6e3Sschwarze width = colwidth[icol];
27956155c97Sschwarze if (min1 > width) {
2809f0607b7Sschwarze min2 = min1;
28156155c97Sschwarze min1 = width;
28256155c97Sschwarze } else if (min1 < width && min2 > width)
28356155c97Sschwarze min2 = width;
2849f0607b7Sschwarze }
2859f0607b7Sschwarze
2869f0607b7Sschwarze /*
2879f0607b7Sschwarze * Find the minimum wanted width
2889f0607b7Sschwarze * for any one of the narrowest columns,
2899f0607b7Sschwarze * and mark the columns wanting that width.
2909f0607b7Sschwarze */
2919f0607b7Sschwarze
2929f0607b7Sschwarze wanted = min2;
2939f0607b7Sschwarze for (g = first_group; g != NULL; g = g->next) {
2949f0607b7Sschwarze necol = 0;
2959f0607b7Sschwarze for (icol = g->startcol; icol <= g->endcol; icol++)
2967d11b6e3Sschwarze if (colwidth[icol] == min1)
2979f0607b7Sschwarze necol++;
2989f0607b7Sschwarze if (necol == 0)
2999f0607b7Sschwarze continue;
3009f0607b7Sschwarze width = min1 + (g->wanted - 1) / necol + 1;
3019f0607b7Sschwarze if (width > min2)
3029f0607b7Sschwarze width = min2;
3039f0607b7Sschwarze if (wanted > width)
3049f0607b7Sschwarze wanted = width;
3059f0607b7Sschwarze }
3069f0607b7Sschwarze
30756155c97Sschwarze /* Record the effect of the widening. */
3089f0607b7Sschwarze
3099f0607b7Sschwarze gp = &first_group;
3109f0607b7Sschwarze while ((g = *gp) != NULL) {
3119f0607b7Sschwarze done = 0;
3129f0607b7Sschwarze for (icol = g->startcol; icol <= g->endcol; icol++) {
3137d11b6e3Sschwarze if (colwidth[icol] != min1)
3149f0607b7Sschwarze continue;
3159f0607b7Sschwarze if (g->wanted <= wanted - min1) {
31656155c97Sschwarze tbl->cols[icol].width += g->wanted;
3179f0607b7Sschwarze done = 1;
3189f0607b7Sschwarze break;
3199f0607b7Sschwarze }
32056155c97Sschwarze tbl->cols[icol].width = wanted;
3219f0607b7Sschwarze g->wanted -= wanted - min1;
3229f0607b7Sschwarze }
3239f0607b7Sschwarze if (done) {
3249f0607b7Sschwarze *gp = g->next;
3259f0607b7Sschwarze free(g);
3269f0607b7Sschwarze } else
327*1fddd665Sschwarze gp = &g->next;
3289f0607b7Sschwarze }
3299f0607b7Sschwarze }
3307d11b6e3Sschwarze free(colwidth);
3319f0607b7Sschwarze
3329f0607b7Sschwarze /*
3333a412390Sschwarze * Align numbers with text.
33446fa2066Sschwarze * Count columns to equalize and columns to maximize.
33546fa2066Sschwarze * Find maximum width of the columns to equalize.
33646fa2066Sschwarze * Find total width of the columns *not* to maximize.
33746fa2066Sschwarze */
33846fa2066Sschwarze
33946fa2066Sschwarze necol = nxcol = 0;
34046fa2066Sschwarze ewidth = xwidth = 0;
34146fa2066Sschwarze for (icol = 0; icol <= maxcol; icol++) {
34246fa2066Sschwarze col = tbl->cols + icol;
3433a412390Sschwarze if (col->width > col->nwidth)
3443a412390Sschwarze col->decimal += (col->width - col->nwidth) / 2;
34546fa2066Sschwarze if (col->flags & TBL_CELL_EQUAL) {
34646fa2066Sschwarze necol++;
34746fa2066Sschwarze if (ewidth < col->width)
34846fa2066Sschwarze ewidth = col->width;
34946fa2066Sschwarze }
35046fa2066Sschwarze if (col->flags & TBL_CELL_WMAX)
35146fa2066Sschwarze nxcol++;
35246fa2066Sschwarze else
35346fa2066Sschwarze xwidth += col->width;
35446fa2066Sschwarze }
35546fa2066Sschwarze
35646fa2066Sschwarze /*
35746fa2066Sschwarze * Equalize columns, if requested for any of them.
35846fa2066Sschwarze * Update total width of the columns not to maximize.
35946fa2066Sschwarze */
36046fa2066Sschwarze
36146fa2066Sschwarze if (necol) {
36246fa2066Sschwarze for (icol = 0; icol <= maxcol; icol++) {
36346fa2066Sschwarze col = tbl->cols + icol;
36446fa2066Sschwarze if ( ! (col->flags & TBL_CELL_EQUAL))
36546fa2066Sschwarze continue;
36646fa2066Sschwarze if (col->width == ewidth)
36746fa2066Sschwarze continue;
368d1c3ec49Sschwarze if (nxcol && rmargin)
36946fa2066Sschwarze xwidth += ewidth - col->width;
37046fa2066Sschwarze col->width = ewidth;
37146fa2066Sschwarze }
37246fa2066Sschwarze }
37346fa2066Sschwarze
37446fa2066Sschwarze /*
37546fa2066Sschwarze * If there are any columns to maximize, find the total
37646fa2066Sschwarze * available width, deducting 3n margins between columns.
37746fa2066Sschwarze * Distribute the available width evenly.
37846fa2066Sschwarze */
37946fa2066Sschwarze
380d1c3ec49Sschwarze if (nxcol && rmargin) {
381eb274914Sschwarze xwidth += 3*maxcol +
38299d91ba7Sschwarze (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ?
38399d91ba7Sschwarze 2 : !!opts->lvert + !!opts->rvert);
384d1c3ec49Sschwarze if (rmargin <= offset + xwidth)
385eb274914Sschwarze return;
386d1c3ec49Sschwarze xwidth = rmargin - offset - xwidth;
38799d91ba7Sschwarze
38899d91ba7Sschwarze /*
38999d91ba7Sschwarze * Emulate a bug in GNU tbl width calculation that
39099d91ba7Sschwarze * manifests itself for large numbers of x-columns.
39199d91ba7Sschwarze * Emulating it for 5 x-columns gives identical
39299d91ba7Sschwarze * behaviour for up to 6 x-columns.
39399d91ba7Sschwarze */
39499d91ba7Sschwarze
39599d91ba7Sschwarze if (nxcol == 5) {
39699d91ba7Sschwarze quirkcol = xwidth % nxcol + 2;
39799d91ba7Sschwarze if (quirkcol != 3 && quirkcol != 4)
39899d91ba7Sschwarze quirkcol = -1;
39999d91ba7Sschwarze } else
40099d91ba7Sschwarze quirkcol = -1;
40199d91ba7Sschwarze
40299d91ba7Sschwarze necol = 0;
40399d91ba7Sschwarze ewidth = 0;
40446fa2066Sschwarze for (icol = 0; icol <= maxcol; icol++) {
40546fa2066Sschwarze col = tbl->cols + icol;
40646fa2066Sschwarze if ( ! (col->flags & TBL_CELL_WMAX))
40746fa2066Sschwarze continue;
40899d91ba7Sschwarze col->width = (double)xwidth * ++necol / nxcol
40999d91ba7Sschwarze - ewidth + 0.4995;
41099d91ba7Sschwarze if (necol == quirkcol)
41199d91ba7Sschwarze col->width--;
41299d91ba7Sschwarze ewidth += col->width;
41346fa2066Sschwarze }
41446fa2066Sschwarze }
415ec04407bSschwarze }
416ec04407bSschwarze
4179f0607b7Sschwarze static size_t
tblcalc_data(struct rofftbl * tbl,struct roffcol * col,const struct tbl_opts * opts,const struct tbl_dat * dp,size_t mw)418ec04407bSschwarze tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
4192c3e66c4Sschwarze const struct tbl_opts *opts, const struct tbl_dat *dp, size_t mw)
420ec04407bSschwarze {
421ec04407bSschwarze size_t sz;
422ec04407bSschwarze
423ec04407bSschwarze /* Branch down into data sub-types. */
424ec04407bSschwarze
425ec04407bSschwarze switch (dp->layout->pos) {
42649aff9f8Sschwarze case TBL_CELL_HORIZ:
42749aff9f8Sschwarze case TBL_CELL_DHORIZ:
428ec04407bSschwarze sz = (*tbl->len)(1, tbl->arg);
4299f0607b7Sschwarze if (col != NULL && col->width < sz)
430ec04407bSschwarze col->width = sz;
4319f0607b7Sschwarze return sz;
43249aff9f8Sschwarze case TBL_CELL_LONG:
43349aff9f8Sschwarze case TBL_CELL_CENTRE:
43449aff9f8Sschwarze case TBL_CELL_LEFT:
43549aff9f8Sschwarze case TBL_CELL_RIGHT:
4369f0607b7Sschwarze return tblcalc_literal(tbl, col, dp, mw);
43749aff9f8Sschwarze case TBL_CELL_NUMBER:
4389f0607b7Sschwarze return tblcalc_number(tbl, col, opts, dp);
43949aff9f8Sschwarze case TBL_CELL_DOWN:
4409f0607b7Sschwarze return 0;
441ec04407bSschwarze default:
442ec04407bSschwarze abort();
443ec04407bSschwarze }
444ec04407bSschwarze }
445ec04407bSschwarze
4469f0607b7Sschwarze static size_t
tblcalc_literal(struct rofftbl * tbl,struct roffcol * col,const struct tbl_dat * dp,size_t mw)447ec04407bSschwarze tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
4482c3e66c4Sschwarze const struct tbl_dat *dp, size_t mw)
449ec04407bSschwarze {
4502c3e66c4Sschwarze const char *str; /* Beginning of the first line. */
4512c3e66c4Sschwarze const char *beg; /* Beginning of the current line. */
4522c3e66c4Sschwarze char *end; /* End of the current line. */
453d1c3ec49Sschwarze size_t lsz; /* Length of the current line. */
454d1c3ec49Sschwarze size_t wsz; /* Length of the current word. */
4559f0607b7Sschwarze size_t msz; /* Length of the longest line. */
456ec04407bSschwarze
4572c3e66c4Sschwarze if (dp->string == NULL || *dp->string == '\0')
4589f0607b7Sschwarze return 0;
4592c3e66c4Sschwarze str = mw ? mandoc_strdup(dp->string) : dp->string;
4609f0607b7Sschwarze msz = lsz = 0;
4612c3e66c4Sschwarze for (beg = str; beg != NULL && *beg != '\0'; beg = end) {
4622c3e66c4Sschwarze end = mw ? strchr(beg, ' ') : NULL;
4632c3e66c4Sschwarze if (end != NULL) {
4642c3e66c4Sschwarze *end++ = '\0';
4652c3e66c4Sschwarze while (*end == ' ')
4662c3e66c4Sschwarze end++;
4672c3e66c4Sschwarze }
468d1c3ec49Sschwarze wsz = (*tbl->slen)(beg, tbl->arg);
469d1c3ec49Sschwarze if (mw && lsz && lsz + 1 + wsz <= mw)
470d1c3ec49Sschwarze lsz += 1 + wsz;
471d1c3ec49Sschwarze else
472d1c3ec49Sschwarze lsz = wsz;
4739f0607b7Sschwarze if (msz < lsz)
4749f0607b7Sschwarze msz = lsz;
475ec04407bSschwarze }
4762c3e66c4Sschwarze if (mw)
4772c3e66c4Sschwarze free((void *)str);
4789f0607b7Sschwarze if (col != NULL && col->width < msz)
4799f0607b7Sschwarze col->width = msz;
4809f0607b7Sschwarze return msz;
4812c3e66c4Sschwarze }
482ec04407bSschwarze
4839f0607b7Sschwarze static size_t
tblcalc_number(struct rofftbl * tbl,struct roffcol * col,const struct tbl_opts * opts,const struct tbl_dat * dp)484ec04407bSschwarze tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
485c7497e73Sschwarze const struct tbl_opts *opts, const struct tbl_dat *dp)
486ec04407bSschwarze {
487a7d5d23dSschwarze const char *cp, *lastdigit, *lastpoint;
488a7d5d23dSschwarze size_t intsz, totsz;
489ec04407bSschwarze char buf[2];
490ec04407bSschwarze
491a7d5d23dSschwarze if (dp->string == NULL || *dp->string == '\0')
4929f0607b7Sschwarze return 0;
4939f0607b7Sschwarze
4949f0607b7Sschwarze totsz = (*tbl->slen)(dp->string, tbl->arg);
4959f0607b7Sschwarze if (col == NULL)
4969f0607b7Sschwarze return totsz;
497a7d5d23dSschwarze
498ec04407bSschwarze /*
499a7d5d23dSschwarze * Find the last digit and
500a7d5d23dSschwarze * the last decimal point that is adjacent to a digit.
501a7d5d23dSschwarze * The alignment indicator "\&" overrides everything.
502ec04407bSschwarze */
503ec04407bSschwarze
504a7d5d23dSschwarze lastdigit = lastpoint = NULL;
505a7d5d23dSschwarze for (cp = dp->string; cp[0] != '\0'; cp++) {
506a7d5d23dSschwarze if (cp[0] == '\\' && cp[1] == '&') {
507a7d5d23dSschwarze lastdigit = lastpoint = cp;
508a7d5d23dSschwarze break;
509a7d5d23dSschwarze } else if (cp[0] == opts->decimal &&
510a7d5d23dSschwarze (isdigit((unsigned char)cp[1]) ||
511a7d5d23dSschwarze (cp > dp->string && isdigit((unsigned char)cp[-1]))))
512a7d5d23dSschwarze lastpoint = cp;
513a7d5d23dSschwarze else if (isdigit((unsigned char)cp[0]))
514a7d5d23dSschwarze lastdigit = cp;
515ec04407bSschwarze }
516a7d5d23dSschwarze
517a7d5d23dSschwarze /* Not a number, treat as a literal string. */
518a7d5d23dSschwarze
519a7d5d23dSschwarze if (lastdigit == NULL) {
5209f0607b7Sschwarze if (col != NULL && col->width < totsz)
521a7d5d23dSschwarze col->width = totsz;
5229f0607b7Sschwarze return totsz;
523a7d5d23dSschwarze }
524a7d5d23dSschwarze
525a7d5d23dSschwarze /* Measure the width of the integer part. */
526a7d5d23dSschwarze
527a7d5d23dSschwarze if (lastpoint == NULL)
528a7d5d23dSschwarze lastpoint = lastdigit + 1;
529a7d5d23dSschwarze intsz = 0;
530a7d5d23dSschwarze buf[1] = '\0';
531a7d5d23dSschwarze for (cp = dp->string; cp < lastpoint; cp++) {
532a7d5d23dSschwarze buf[0] = cp[0];
533a7d5d23dSschwarze intsz += (*tbl->slen)(buf, tbl->arg);
534a7d5d23dSschwarze }
535a7d5d23dSschwarze
536a7d5d23dSschwarze /*
537a7d5d23dSschwarze * If this number has more integer digits than all numbers
538a7d5d23dSschwarze * seen on earlier lines, shift them all to the right.
539a7d5d23dSschwarze * If it has fewer, shift this number to the right.
540a7d5d23dSschwarze */
541a7d5d23dSschwarze
542a7d5d23dSschwarze if (intsz > col->decimal) {
543a7d5d23dSschwarze col->nwidth += intsz - col->decimal;
544a7d5d23dSschwarze col->decimal = intsz;
545ec04407bSschwarze } else
546a7d5d23dSschwarze totsz += col->decimal - intsz;
547ec04407bSschwarze
548a7d5d23dSschwarze /* Update the maximum total width seen so far. */
549ec04407bSschwarze
550a7d5d23dSschwarze if (totsz > col->nwidth)
551a7d5d23dSschwarze col->nwidth = totsz;
552e968d739Sschwarze if (col->nwidth > col->width)
553e968d739Sschwarze col->width = col->nwidth;
5549f0607b7Sschwarze return totsz;
555ec04407bSschwarze }
556