-/* $Id: out.c,v 1.50 2014/08/10 23:54:41 schwarze Exp $ */
+/* $Id: out.c,v 1.82 2021/09/07 17:07:58 schwarze Exp $ */
/*
* Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
- * Copyright (c) 2011 Ingo Schwarze <schwarze@openbsd.org>
+ * Copyright (c) 2011, 2014, 2015, 2017, 2018, 2019, 2021
+ * Ingo Schwarze <schwarze@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
#include <assert.h>
#include <ctype.h>
+#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc_aux.h"
#include "mandoc.h"
+#include "tbl.h"
#include "out.h"
-static void tblcalc_data(struct rofftbl *, struct roffcol *,
- const struct tbl_opts *, const struct tbl_dat *);
-static void tblcalc_literal(struct rofftbl *, struct roffcol *,
- const struct tbl_dat *);
-static void tblcalc_number(struct rofftbl *, struct roffcol *,
+struct tbl_colgroup {
+ struct tbl_colgroup *next;
+ size_t wanted;
+ int startcol;
+ int endcol;
+};
+
+static size_t tblcalc_data(struct rofftbl *, struct roffcol *,
+ const struct tbl_opts *, const struct tbl_dat *,
+ size_t);
+static size_t tblcalc_literal(struct rofftbl *, struct roffcol *,
+ const struct tbl_dat *, size_t);
+static size_t tblcalc_number(struct rofftbl *, struct roffcol *,
const struct tbl_opts *, const struct tbl_dat *);
/*
- * Convert a `scaling unit' to a consistent form, or fail. Scaling
- * units are documented in groff.7, mdoc.7, man.7.
+ * Parse the *src string and store a scaling unit into *dst.
+ * If the string doesn't specify the unit, use the default.
+ * If no default is specified, fail.
+ * Return a pointer to the byte after the last byte used,
+ * or NULL on total failure.
*/
-int
+const char *
a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
{
- char buf[BUFSIZ], hasd;
- int i;
- enum roffscale unit;
-
- if ('\0' == *src)
- return(0);
-
- i = hasd = 0;
-
- switch (*src) {
- case '+':
- src++;
- break;
- case '-':
- buf[i++] = *src++;
- break;
- default:
- break;
- }
-
- if ('\0' == *src)
- return(0);
-
- while (i < BUFSIZ) {
- if ( ! isdigit((unsigned char)*src)) {
- if ('.' != *src)
- break;
- else if (hasd)
- break;
- else
- hasd = 1;
- }
- buf[i++] = *src++;
- }
+ char *endptr;
- if (BUFSIZ == i || (*src && *(src + 1)))
- return(0);
+ dst->unit = def == SCALE_MAX ? SCALE_BU : def;
+ dst->scale = strtod(src, &endptr);
+ if (endptr == src)
+ return NULL;
- buf[i] = '\0';
-
- switch (*src) {
+ switch (*endptr++) {
case 'c':
- unit = SCALE_CM;
+ dst->unit = SCALE_CM;
break;
case 'i':
- unit = SCALE_IN;
- break;
- case 'P':
- unit = SCALE_PC;
- break;
- case 'p':
- unit = SCALE_PT;
+ dst->unit = SCALE_IN;
break;
case 'f':
- unit = SCALE_FS;
+ dst->unit = SCALE_FS;
break;
- case 'v':
- unit = SCALE_VS;
+ case 'M':
+ dst->unit = SCALE_MM;
break;
case 'm':
- unit = SCALE_EM;
+ dst->unit = SCALE_EM;
break;
- case '\0':
- if (SCALE_MAX == def)
- return(0);
- unit = SCALE_BU;
+ case 'n':
+ dst->unit = SCALE_EN;
break;
- case 'u':
- unit = SCALE_BU;
+ case 'P':
+ dst->unit = SCALE_PC;
break;
- case 'M':
- unit = SCALE_MM;
+ case 'p':
+ dst->unit = SCALE_PT;
break;
- case 'n':
- unit = SCALE_EN;
+ case 'u':
+ dst->unit = SCALE_BU;
+ break;
+ case 'v':
+ dst->unit = SCALE_VS;
break;
default:
- return(0);
+ endptr--;
+ if (SCALE_MAX == def)
+ return NULL;
+ dst->unit = def;
+ break;
}
-
- /* FIXME: do this in the caller. */
- if ((dst->scale = atof(buf)) < 0.0)
- dst->scale = 0.0;
- dst->unit = unit;
- return(1);
+ return endptr;
}
/*
* used for the actual width calculations.
*/
void
-tblcalc(struct rofftbl *tbl, const struct tbl_span *sp)
+tblcalc(struct rofftbl *tbl, const struct tbl_span *sp_first,
+ size_t offset, size_t rmargin)
{
+ struct roffsu su;
+ const struct tbl_opts *opts;
+ const struct tbl_span *sp;
const struct tbl_dat *dp;
struct roffcol *col;
- int spans;
+ struct tbl_colgroup *first_group, **gp, *g;
+ size_t ewidth, min1, min2, wanted, width, xwidth;
+ int done, icol, maxcol, necol, nxcol, quirkcol;
/*
* Allocate the master column specifiers. These will hold the
* must be freed and nullified by the caller.
*/
- assert(NULL == tbl->cols);
- tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
+ assert(tbl->cols == NULL);
+ tbl->cols = mandoc_calloc((size_t)sp_first->opts->cols,
sizeof(struct roffcol));
+ opts = sp_first->opts;
- for ( ; sp; sp = sp->next) {
- if (TBL_SPAN_DATA != sp->pos)
+ maxcol = -1;
+ first_group = NULL;
+ for (sp = sp_first; sp != NULL; sp = sp->next) {
+ if (sp->pos != TBL_SPAN_DATA)
continue;
- spans = 1;
+
/*
* Account for the data cells in the layout, matching it
* to data cells in the data section.
*/
- for (dp = sp->first; dp; dp = dp->next) {
- /* Do not used spanned cells in the calculation. */
- if (0 < --spans)
+
+ gp = &first_group;
+ for (dp = sp->first; dp != NULL; dp = dp->next) {
+ icol = dp->layout->col;
+ while (maxcol < icol + dp->hspans)
+ tbl->cols[++maxcol].spacing = SIZE_MAX;
+ col = tbl->cols + icol;
+ col->flags |= dp->layout->flags;
+ if (dp->layout->flags & TBL_CELL_WIGN)
continue;
- spans = dp->spans;
- if (1 < spans)
+
+ /* Handle explicit width specifications. */
+
+ if (dp->layout->wstr != NULL &&
+ dp->layout->width == 0 &&
+ a2roffsu(dp->layout->wstr, &su, SCALE_EN)
+ != NULL)
+ dp->layout->width =
+ (*tbl->sulen)(&su, tbl->arg);
+ if (col->width < dp->layout->width)
+ col->width = dp->layout->width;
+ if (dp->layout->spacing != SIZE_MAX &&
+ (col->spacing == SIZE_MAX ||
+ col->spacing < dp->layout->spacing))
+ col->spacing = dp->layout->spacing;
+
+ /*
+ * Calculate an automatic width.
+ * Except for spanning cells, apply it.
+ */
+
+ width = tblcalc_data(tbl,
+ dp->hspans == 0 ? col : NULL,
+ opts, dp,
+ dp->block == 0 ? 0 :
+ dp->layout->width ? dp->layout->width :
+ rmargin ? (rmargin + sp->opts->cols / 2)
+ / (sp->opts->cols + 1) : 0);
+ if (dp->hspans == 0)
continue;
- assert(dp->layout);
- col = &tbl->cols[dp->layout->head->ident];
- tblcalc_data(tbl, col, sp->opts, dp);
+
+ /*
+ * Build an ordered, singly linked list
+ * of all groups of columns joined by spans,
+ * recording the minimum width for each group.
+ */
+
+ while (*gp != NULL && ((*gp)->startcol < icol ||
+ (*gp)->endcol < icol + dp->hspans))
+ gp = &(*gp)->next;
+ if (*gp == NULL || (*gp)->startcol > icol ||
+ (*gp)->endcol > icol + dp->hspans) {
+ g = mandoc_malloc(sizeof(*g));
+ g->next = *gp;
+ g->wanted = width;
+ g->startcol = icol;
+ g->endcol = icol + dp->hspans;
+ *gp = g;
+ } else if ((*gp)->wanted < width)
+ (*gp)->wanted = width;
+ }
+ }
+
+ /*
+ * The minimum width of columns explicitly specified
+ * in the layout is 1n.
+ */
+
+ if (maxcol < sp_first->opts->cols - 1)
+ maxcol = sp_first->opts->cols - 1;
+ for (icol = 0; icol <= maxcol; icol++) {
+ col = tbl->cols + icol;
+ if (col->width < 1)
+ col->width = 1;
+
+ /*
+ * Column spacings are needed for span width
+ * calculations, so set the default values now.
+ */
+
+ if (col->spacing == SIZE_MAX || icol == maxcol)
+ col->spacing = 3;
+ }
+
+ /*
+ * Replace the minimum widths with the missing widths,
+ * and dismiss groups that are already wide enough.
+ */
+
+ gp = &first_group;
+ while ((g = *gp) != NULL) {
+ done = 0;
+ for (icol = g->startcol; icol <= g->endcol; icol++) {
+ width = tbl->cols[icol].width;
+ if (icol < g->endcol)
+ width += tbl->cols[icol].spacing;
+ if (g->wanted <= width) {
+ done = 1;
+ break;
+ } else
+ (*gp)->wanted -= width;
+ }
+ if (done) {
+ *gp = g->next;
+ free(g);
+ } else
+ gp = &(*gp)->next;
+ }
+
+ while (first_group != NULL) {
+
+ /*
+ * Find the smallest and second smallest column width
+ * among the columns which may need expamsion.
+ */
+
+ min1 = min2 = SIZE_MAX;
+ for (icol = 0; icol <= maxcol; icol++) {
+ width = tbl->cols[icol].width;
+ if (min1 > width) {
+ min2 = min1;
+ min1 = width;
+ } else if (min1 < width && min2 > width)
+ min2 = width;
+ }
+
+ /*
+ * Find the minimum wanted width
+ * for any one of the narrowest columns,
+ * and mark the columns wanting that width.
+ */
+
+ wanted = min2;
+ for (g = first_group; g != NULL; g = g->next) {
+ necol = 0;
+ for (icol = g->startcol; icol <= g->endcol; icol++)
+ if (tbl->cols[icol].width == min1)
+ necol++;
+ if (necol == 0)
+ continue;
+ width = min1 + (g->wanted - 1) / necol + 1;
+ if (width > min2)
+ width = min2;
+ if (wanted > width)
+ wanted = width;
+ }
+
+ /* Record the effect of the widening. */
+
+ gp = &first_group;
+ while ((g = *gp) != NULL) {
+ done = 0;
+ for (icol = g->startcol; icol <= g->endcol; icol++) {
+ if (tbl->cols[icol].width != min1)
+ continue;
+ if (g->wanted <= wanted - min1) {
+ tbl->cols[icol].width += g->wanted;
+ done = 1;
+ break;
+ }
+ tbl->cols[icol].width = wanted;
+ g->wanted -= wanted - min1;
+ }
+ if (done) {
+ *gp = g->next;
+ free(g);
+ } else
+ gp = &(*gp)->next;
+ }
+ }
+
+ /*
+ * Align numbers with text.
+ * Count columns to equalize and columns to maximize.
+ * Find maximum width of the columns to equalize.
+ * Find total width of the columns *not* to maximize.
+ */
+
+ necol = nxcol = 0;
+ ewidth = xwidth = 0;
+ for (icol = 0; icol <= maxcol; icol++) {
+ col = tbl->cols + icol;
+ if (col->width > col->nwidth)
+ col->decimal += (col->width - col->nwidth) / 2;
+ if (col->flags & TBL_CELL_EQUAL) {
+ necol++;
+ if (ewidth < col->width)
+ ewidth = col->width;
+ }
+ if (col->flags & TBL_CELL_WMAX)
+ nxcol++;
+ else
+ xwidth += col->width;
+ }
+
+ /*
+ * Equalize columns, if requested for any of them.
+ * Update total width of the columns not to maximize.
+ */
+
+ if (necol) {
+ for (icol = 0; icol <= maxcol; icol++) {
+ col = tbl->cols + icol;
+ if ( ! (col->flags & TBL_CELL_EQUAL))
+ continue;
+ if (col->width == ewidth)
+ continue;
+ if (nxcol && rmargin)
+ xwidth += ewidth - col->width;
+ col->width = ewidth;
+ }
+ }
+
+ /*
+ * If there are any columns to maximize, find the total
+ * available width, deducting 3n margins between columns.
+ * Distribute the available width evenly.
+ */
+
+ if (nxcol && rmargin) {
+ xwidth += 3*maxcol +
+ (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ?
+ 2 : !!opts->lvert + !!opts->rvert);
+ if (rmargin <= offset + xwidth)
+ return;
+ xwidth = rmargin - offset - xwidth;
+
+ /*
+ * Emulate a bug in GNU tbl width calculation that
+ * manifests itself for large numbers of x-columns.
+ * Emulating it for 5 x-columns gives identical
+ * behaviour for up to 6 x-columns.
+ */
+
+ if (nxcol == 5) {
+ quirkcol = xwidth % nxcol + 2;
+ if (quirkcol != 3 && quirkcol != 4)
+ quirkcol = -1;
+ } else
+ quirkcol = -1;
+
+ necol = 0;
+ ewidth = 0;
+ for (icol = 0; icol <= maxcol; icol++) {
+ col = tbl->cols + icol;
+ if ( ! (col->flags & TBL_CELL_WMAX))
+ continue;
+ col->width = (double)xwidth * ++necol / nxcol
+ - ewidth + 0.4995;
+ if (necol == quirkcol)
+ col->width--;
+ ewidth += col->width;
}
}
}
-static void
+static size_t
tblcalc_data(struct rofftbl *tbl, struct roffcol *col,
- const struct tbl_opts *opts, const struct tbl_dat *dp)
+ const struct tbl_opts *opts, const struct tbl_dat *dp, size_t mw)
{
size_t sz;
switch (dp->layout->pos) {
case TBL_CELL_HORIZ:
- /* FALLTHROUGH */
case TBL_CELL_DHORIZ:
sz = (*tbl->len)(1, tbl->arg);
- if (col->width < sz)
+ if (col != NULL && col->width < sz)
col->width = sz;
- break;
+ return sz;
case TBL_CELL_LONG:
- /* FALLTHROUGH */
case TBL_CELL_CENTRE:
- /* FALLTHROUGH */
case TBL_CELL_LEFT:
- /* FALLTHROUGH */
case TBL_CELL_RIGHT:
- tblcalc_literal(tbl, col, dp);
- break;
+ return tblcalc_literal(tbl, col, dp, mw);
case TBL_CELL_NUMBER:
- tblcalc_number(tbl, col, opts, dp);
- break;
+ return tblcalc_number(tbl, col, opts, dp);
case TBL_CELL_DOWN:
- break;
+ return 0;
default:
abort();
- /* NOTREACHED */
}
}
-static void
+static size_t
tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
- const struct tbl_dat *dp)
+ const struct tbl_dat *dp, size_t mw)
{
- size_t sz;
- const char *str;
-
- str = dp->string ? dp->string : "";
- sz = (*tbl->slen)(str, tbl->arg);
-
- if (col->width < sz)
- col->width = sz;
+ const char *str; /* Beginning of the first line. */
+ const char *beg; /* Beginning of the current line. */
+ char *end; /* End of the current line. */
+ size_t lsz; /* Length of the current line. */
+ size_t wsz; /* Length of the current word. */
+ size_t msz; /* Length of the longest line. */
+
+ if (dp->string == NULL || *dp->string == '\0')
+ return 0;
+ str = mw ? mandoc_strdup(dp->string) : dp->string;
+ msz = lsz = 0;
+ for (beg = str; beg != NULL && *beg != '\0'; beg = end) {
+ end = mw ? strchr(beg, ' ') : NULL;
+ if (end != NULL) {
+ *end++ = '\0';
+ while (*end == ' ')
+ end++;
+ }
+ wsz = (*tbl->slen)(beg, tbl->arg);
+ if (mw && lsz && lsz + 1 + wsz <= mw)
+ lsz += 1 + wsz;
+ else
+ lsz = wsz;
+ if (msz < lsz)
+ msz = lsz;
+ }
+ if (mw)
+ free((void *)str);
+ if (col != NULL && col->width < msz)
+ col->width = msz;
+ return msz;
}
-static void
+static size_t
tblcalc_number(struct rofftbl *tbl, struct roffcol *col,
const struct tbl_opts *opts, const struct tbl_dat *dp)
{
- int i;
- size_t sz, psz, ssz, d;
- const char *str;
- char *cp;
+ const char *cp, *lastdigit, *lastpoint;
+ size_t intsz, totsz;
char buf[2];
+ if (dp->string == NULL || *dp->string == '\0')
+ return 0;
+
+ totsz = (*tbl->slen)(dp->string, tbl->arg);
+ if (col == NULL)
+ return totsz;
+
/*
- * First calculate number width and decimal place (last + 1 for
- * non-decimal numbers). If the stored decimal is subsequent to
- * ours, make our size longer by that difference
- * (right-"shifting"); similarly, if ours is subsequent the
- * stored, then extend the stored size by the difference.
- * Finally, re-assign the stored values.
+ * Find the last digit and
+ * the last decimal point that is adjacent to a digit.
+ * The alignment indicator "\&" overrides everything.
*/
- str = dp->string ? dp->string : "";
- sz = (*tbl->slen)(str, tbl->arg);
+ lastdigit = lastpoint = NULL;
+ for (cp = dp->string; cp[0] != '\0'; cp++) {
+ if (cp[0] == '\\' && cp[1] == '&') {
+ lastdigit = lastpoint = cp;
+ break;
+ } else if (cp[0] == opts->decimal &&
+ (isdigit((unsigned char)cp[1]) ||
+ (cp > dp->string && isdigit((unsigned char)cp[-1]))))
+ lastpoint = cp;
+ else if (isdigit((unsigned char)cp[0]))
+ lastdigit = cp;
+ }
- /* FIXME: TBL_DATA_HORIZ et al.? */
+ /* Not a number, treat as a literal string. */
- buf[0] = opts->decimal;
- buf[1] = '\0';
+ if (lastdigit == NULL) {
+ if (col != NULL && col->width < totsz)
+ col->width = totsz;
+ return totsz;
+ }
- psz = (*tbl->slen)(buf, tbl->arg);
+ /* Measure the width of the integer part. */
- if (NULL != (cp = strrchr(str, opts->decimal))) {
- buf[1] = '\0';
- for (ssz = 0, i = 0; cp != &str[i]; i++) {
- buf[0] = str[i];
- ssz += (*tbl->slen)(buf, tbl->arg);
- }
- d = ssz + psz;
- } else
- d = sz + psz;
+ if (lastpoint == NULL)
+ lastpoint = lastdigit + 1;
+ intsz = 0;
+ buf[1] = '\0';
+ for (cp = dp->string; cp < lastpoint; cp++) {
+ buf[0] = cp[0];
+ intsz += (*tbl->slen)(buf, tbl->arg);
+ }
- /* Adjust the settings for this column. */
+ /*
+ * If this number has more integer digits than all numbers
+ * seen on earlier lines, shift them all to the right.
+ * If it has fewer, shift this number to the right.
+ */
- if (col->decimal > d) {
- sz += col->decimal - d;
- d = col->decimal;
+ if (intsz > col->decimal) {
+ col->nwidth += intsz - col->decimal;
+ col->decimal = intsz;
} else
- col->width += d - col->decimal;
+ totsz += col->decimal - intsz;
+
+ /* Update the maximum total width seen so far. */
- if (sz > col->width)
- col->width = sz;
- if (d > col->decimal)
- col->decimal = d;
+ if (totsz > col->nwidth)
+ col->nwidth = totsz;
+ if (col->nwidth > col->width)
+ col->width = col->nwidth;
+ return totsz;
}
git.ckatri.com / mandoc.git / blobdiff