version 1.4, 2009/10/09 06:54:11 |
version 1.83, 2021/09/28 17:06:59 |
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/* $Id$ */ |
/* $Id$ */ |
/* |
/* |
* Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se> |
* Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv> |
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* Copyright (c) 2011, 2014, 2015, 2017, 2018, 2019, 2021 |
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* Ingo Schwarze <schwarze@openbsd.org> |
* |
* |
* Permission to use, copy, modify, and distribute this software for any |
* Permission to use, copy, modify, and distribute this software for any |
* purpose with or without fee is hereby granted, provided that the above |
* purpose with or without fee is hereby granted, provided that the above |
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
*/ |
*/ |
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#include "config.h" |
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#include <sys/types.h> |
#include <sys/types.h> |
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#include <assert.h> |
#include <ctype.h> |
#include <ctype.h> |
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#include <stdint.h> |
#include <stdio.h> |
#include <stdio.h> |
#include <stdlib.h> |
#include <stdlib.h> |
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#include <string.h> |
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#include <time.h> |
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#include "mandoc_aux.h" |
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#include "mandoc.h" |
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#include "tbl.h" |
#include "out.h" |
#include "out.h" |
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struct tbl_colgroup { |
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struct tbl_colgroup *next; |
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size_t wanted; |
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int startcol; |
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int endcol; |
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}; |
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/* |
static size_t tblcalc_data(struct rofftbl *, struct roffcol *, |
* Convert a `scaling unit' to a consistent form, or fail. Scaling |
const struct tbl_opts *, const struct tbl_dat *, |
* units are documented in groff.7, which stipulates the following: |
size_t); |
* |
static size_t tblcalc_literal(struct rofftbl *, struct roffcol *, |
* (1) A scaling unit is a signed/unsigned integer/float with or |
const struct tbl_dat *, size_t); |
* without a unit. |
static size_t tblcalc_number(struct rofftbl *, struct roffcol *, |
* |
const struct tbl_opts *, const struct tbl_dat *); |
* (2) The following units exist: |
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* c Centimeter |
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* i Inch |
/* |
* P Pica = 1/6 inch |
* Parse the *src string and store a scaling unit into *dst. |
* p Point = 1/72 inch |
* If the string doesn't specify the unit, use the default. |
* m Em = the font size in points (width of letter m) |
* If no default is specified, fail. |
* M 100th of an Em |
* Return a pointer to the byte after the last byte used, |
* n En = Em/2 |
* or NULL on total failure. |
* u Basic unit for actual output device |
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* v Vertical line space in basic units scaled point = |
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* 1/sizescale of a point (defined in font DESC file) |
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* f Scale by 65536. |
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*/ |
*/ |
int |
const char * |
a2roffsu(const char *src, struct roffsu *dst) |
a2roffsu(const char *src, struct roffsu *dst, enum roffscale def) |
{ |
{ |
char buf[BUFSIZ], hasd; |
char *endptr; |
int i; |
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enum roffscale unit; |
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i = hasd = 0; |
dst->unit = def == SCALE_MAX ? SCALE_BU : def; |
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dst->scale = strtod(src, &endptr); |
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if (endptr == src) |
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return NULL; |
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switch (*src) { |
switch (*endptr++) { |
case ('+'): |
case 'c': |
src++; |
dst->unit = SCALE_CM; |
break; |
break; |
case ('-'): |
case 'i': |
buf[i++] = *src++; |
dst->unit = SCALE_IN; |
break; |
break; |
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case 'f': |
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dst->unit = SCALE_FS; |
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break; |
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case 'M': |
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dst->unit = SCALE_MM; |
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break; |
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case 'm': |
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dst->unit = SCALE_EM; |
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break; |
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case 'n': |
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dst->unit = SCALE_EN; |
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break; |
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case 'P': |
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dst->unit = SCALE_PC; |
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break; |
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case 'p': |
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dst->unit = SCALE_PT; |
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break; |
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case 'u': |
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dst->unit = SCALE_BU; |
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break; |
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case 'v': |
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dst->unit = SCALE_VS; |
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break; |
default: |
default: |
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endptr--; |
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if (SCALE_MAX == def) |
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return NULL; |
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dst->unit = def; |
break; |
break; |
} |
} |
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return endptr; |
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} |
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while (i < BUFSIZ) { |
/* |
if ( ! isdigit((u_char)*src)) { |
* Calculate the abstract widths and decimal positions of columns in a |
if ('.' != *src) |
* table. This routine allocates the columns structures then runs over |
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* all rows and cells in the table. The function pointers in "tbl" are |
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* used for the actual width calculations. |
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*/ |
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void |
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tblcalc(struct rofftbl *tbl, const struct tbl_span *sp_first, |
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size_t offset, size_t rmargin) |
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{ |
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struct roffsu su; |
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const struct tbl_opts *opts; |
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const struct tbl_span *sp; |
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const struct tbl_dat *dp; |
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struct roffcol *col; |
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struct tbl_colgroup *first_group, **gp, *g; |
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size_t *colwidth; |
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size_t ewidth, min1, min2, wanted, width, xwidth; |
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int done, icol, maxcol, necol, nxcol, quirkcol; |
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/* |
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* Allocate the master column specifiers. These will hold the |
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* widths and decimal positions for all cells in the column. It |
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* must be freed and nullified by the caller. |
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*/ |
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assert(tbl->cols == NULL); |
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tbl->cols = mandoc_calloc((size_t)sp_first->opts->cols, |
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sizeof(struct roffcol)); |
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opts = sp_first->opts; |
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maxcol = -1; |
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first_group = NULL; |
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for (sp = sp_first; sp != NULL; sp = sp->next) { |
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if (sp->pos != TBL_SPAN_DATA) |
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continue; |
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/* |
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* Account for the data cells in the layout, matching it |
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* to data cells in the data section. |
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*/ |
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gp = &first_group; |
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for (dp = sp->first; dp != NULL; dp = dp->next) { |
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icol = dp->layout->col; |
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while (maxcol < icol + dp->hspans) |
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tbl->cols[++maxcol].spacing = SIZE_MAX; |
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col = tbl->cols + icol; |
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col->flags |= dp->layout->flags; |
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if (dp->layout->flags & TBL_CELL_WIGN) |
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continue; |
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/* Handle explicit width specifications. */ |
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if (dp->layout->wstr != NULL && |
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dp->layout->width == 0 && |
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a2roffsu(dp->layout->wstr, &su, SCALE_EN) |
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!= NULL) |
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dp->layout->width = |
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(*tbl->sulen)(&su, tbl->arg); |
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if (col->width < dp->layout->width) |
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col->width = dp->layout->width; |
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if (dp->layout->spacing != SIZE_MAX && |
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(col->spacing == SIZE_MAX || |
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col->spacing < dp->layout->spacing)) |
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col->spacing = dp->layout->spacing; |
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/* |
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* Calculate an automatic width. |
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* Except for spanning cells, apply it. |
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*/ |
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width = tblcalc_data(tbl, |
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dp->hspans == 0 ? col : NULL, |
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opts, dp, |
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dp->block == 0 ? 0 : |
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dp->layout->width ? dp->layout->width : |
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rmargin ? (rmargin + sp->opts->cols / 2) |
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/ (sp->opts->cols + 1) : 0); |
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if (dp->hspans == 0) |
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continue; |
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/* |
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* Build an ordered, singly linked list |
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* of all groups of columns joined by spans, |
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* recording the minimum width for each group. |
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*/ |
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while (*gp != NULL && ((*gp)->startcol < icol || |
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(*gp)->endcol < icol + dp->hspans)) |
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gp = &(*gp)->next; |
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if (*gp == NULL || (*gp)->startcol > icol || |
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(*gp)->endcol > icol + dp->hspans) { |
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g = mandoc_malloc(sizeof(*g)); |
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g->next = *gp; |
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g->wanted = width; |
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g->startcol = icol; |
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g->endcol = icol + dp->hspans; |
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*gp = g; |
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} else if ((*gp)->wanted < width) |
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(*gp)->wanted = width; |
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} |
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} |
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/* |
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* The minimum width of columns explicitly specified |
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* in the layout is 1n. |
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*/ |
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if (maxcol < sp_first->opts->cols - 1) |
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maxcol = sp_first->opts->cols - 1; |
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for (icol = 0; icol <= maxcol; icol++) { |
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col = tbl->cols + icol; |
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if (col->width < 1) |
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col->width = 1; |
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/* |
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* Column spacings are needed for span width |
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* calculations, so set the default values now. |
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*/ |
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if (col->spacing == SIZE_MAX || icol == maxcol) |
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col->spacing = 3; |
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} |
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/* |
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* Replace the minimum widths with the missing widths, |
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* and dismiss groups that are already wide enough. |
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*/ |
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gp = &first_group; |
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while ((g = *gp) != NULL) { |
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done = 0; |
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for (icol = g->startcol; icol <= g->endcol; icol++) { |
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width = tbl->cols[icol].width; |
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if (icol < g->endcol) |
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width += tbl->cols[icol].spacing; |
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if (g->wanted <= width) { |
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done = 1; |
break; |
break; |
else if (hasd) |
} else |
break; |
(*gp)->wanted -= width; |
else |
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hasd = 1; |
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} |
} |
buf[i++] = *src++; |
if (done) { |
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*gp = g->next; |
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free(g); |
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} else |
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gp = &(*gp)->next; |
} |
} |
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if (BUFSIZ == i || (*src && *(src + 1))) |
colwidth = mandoc_reallocarray(NULL, maxcol + 1, sizeof(*colwidth)); |
return(0); |
while (first_group != NULL) { |
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buf[i] = '\0'; |
/* |
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* Rebuild the array of the widths of all columns |
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* participating in spans that require expansion. |
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*/ |
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switch (*src) { |
for (icol = 0; icol <= maxcol; icol++) |
case ('c'): |
colwidth[icol] = SIZE_MAX; |
unit = SCALE_CM; |
for (g = first_group; g != NULL; g = g->next) |
break; |
for (icol = g->startcol; icol <= g->endcol; icol++) |
case ('i'): |
colwidth[icol] = tbl->cols[icol].width; |
unit = SCALE_IN; |
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break; |
/* |
case ('P'): |
* Find the smallest and second smallest column width |
unit = SCALE_PC; |
* among the columns which may need expamsion. |
break; |
*/ |
case ('p'): |
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unit = SCALE_PT; |
min1 = min2 = SIZE_MAX; |
break; |
for (icol = 0; icol <= maxcol; icol++) { |
case ('f'): |
width = colwidth[icol]; |
unit = SCALE_FS; |
if (min1 > width) { |
break; |
min2 = min1; |
case ('v'): |
min1 = width; |
unit = SCALE_VS; |
} else if (min1 < width && min2 > width) |
break; |
min2 = width; |
case ('m'): |
} |
unit = SCALE_EM; |
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break; |
/* |
case ('\0'): |
* Find the minimum wanted width |
/* FALLTHROUGH */ |
* for any one of the narrowest columns, |
case ('u'): |
* and mark the columns wanting that width. |
unit = SCALE_BU; |
*/ |
break; |
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case ('M'): |
wanted = min2; |
unit = SCALE_MM; |
for (g = first_group; g != NULL; g = g->next) { |
break; |
necol = 0; |
case ('n'): |
for (icol = g->startcol; icol <= g->endcol; icol++) |
unit = SCALE_EN; |
if (colwidth[icol] == min1) |
break; |
necol++; |
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if (necol == 0) |
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continue; |
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width = min1 + (g->wanted - 1) / necol + 1; |
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if (width > min2) |
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width = min2; |
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if (wanted > width) |
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wanted = width; |
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} |
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/* Record the effect of the widening. */ |
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gp = &first_group; |
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while ((g = *gp) != NULL) { |
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done = 0; |
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for (icol = g->startcol; icol <= g->endcol; icol++) { |
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if (colwidth[icol] != min1) |
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continue; |
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if (g->wanted <= wanted - min1) { |
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tbl->cols[icol].width += g->wanted; |
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done = 1; |
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break; |
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} |
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tbl->cols[icol].width = wanted; |
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g->wanted -= wanted - min1; |
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} |
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if (done) { |
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*gp = g->next; |
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free(g); |
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} else |
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gp = &(*gp)->next; |
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} |
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} |
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free(colwidth); |
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/* |
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* Align numbers with text. |
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* Count columns to equalize and columns to maximize. |
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* Find maximum width of the columns to equalize. |
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* Find total width of the columns *not* to maximize. |
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*/ |
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necol = nxcol = 0; |
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ewidth = xwidth = 0; |
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for (icol = 0; icol <= maxcol; icol++) { |
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col = tbl->cols + icol; |
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if (col->width > col->nwidth) |
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col->decimal += (col->width - col->nwidth) / 2; |
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if (col->flags & TBL_CELL_EQUAL) { |
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necol++; |
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if (ewidth < col->width) |
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ewidth = col->width; |
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} |
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if (col->flags & TBL_CELL_WMAX) |
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nxcol++; |
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else |
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xwidth += col->width; |
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} |
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/* |
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* Equalize columns, if requested for any of them. |
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* Update total width of the columns not to maximize. |
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*/ |
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if (necol) { |
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for (icol = 0; icol <= maxcol; icol++) { |
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col = tbl->cols + icol; |
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if ( ! (col->flags & TBL_CELL_EQUAL)) |
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continue; |
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if (col->width == ewidth) |
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continue; |
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if (nxcol && rmargin) |
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xwidth += ewidth - col->width; |
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col->width = ewidth; |
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} |
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} |
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/* |
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* If there are any columns to maximize, find the total |
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* available width, deducting 3n margins between columns. |
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* Distribute the available width evenly. |
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*/ |
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if (nxcol && rmargin) { |
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xwidth += 3*maxcol + |
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(opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ? |
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2 : !!opts->lvert + !!opts->rvert); |
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if (rmargin <= offset + xwidth) |
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return; |
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xwidth = rmargin - offset - xwidth; |
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/* |
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* Emulate a bug in GNU tbl width calculation that |
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* manifests itself for large numbers of x-columns. |
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* Emulating it for 5 x-columns gives identical |
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* behaviour for up to 6 x-columns. |
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*/ |
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if (nxcol == 5) { |
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quirkcol = xwidth % nxcol + 2; |
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if (quirkcol != 3 && quirkcol != 4) |
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quirkcol = -1; |
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} else |
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quirkcol = -1; |
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necol = 0; |
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ewidth = 0; |
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for (icol = 0; icol <= maxcol; icol++) { |
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col = tbl->cols + icol; |
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if ( ! (col->flags & TBL_CELL_WMAX)) |
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continue; |
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col->width = (double)xwidth * ++necol / nxcol |
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- ewidth + 0.4995; |
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if (necol == quirkcol) |
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col->width--; |
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ewidth += col->width; |
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} |
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} |
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} |
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static size_t |
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tblcalc_data(struct rofftbl *tbl, struct roffcol *col, |
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const struct tbl_opts *opts, const struct tbl_dat *dp, size_t mw) |
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{ |
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size_t sz; |
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/* Branch down into data sub-types. */ |
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switch (dp->layout->pos) { |
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case TBL_CELL_HORIZ: |
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case TBL_CELL_DHORIZ: |
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sz = (*tbl->len)(1, tbl->arg); |
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if (col != NULL && col->width < sz) |
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col->width = sz; |
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return sz; |
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case TBL_CELL_LONG: |
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case TBL_CELL_CENTRE: |
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case TBL_CELL_LEFT: |
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case TBL_CELL_RIGHT: |
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return tblcalc_literal(tbl, col, dp, mw); |
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case TBL_CELL_NUMBER: |
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return tblcalc_number(tbl, col, opts, dp); |
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case TBL_CELL_DOWN: |
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return 0; |
default: |
default: |
return(0); |
abort(); |
} |
} |
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} |
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if ((dst->scale = atof(buf)) < 0) |
static size_t |
dst->scale = 0; |
tblcalc_literal(struct rofftbl *tbl, struct roffcol *col, |
dst->unit = unit; |
const struct tbl_dat *dp, size_t mw) |
dst->pt = hasd; |
{ |
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const char *str; /* Beginning of the first line. */ |
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const char *beg; /* Beginning of the current line. */ |
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char *end; /* End of the current line. */ |
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size_t lsz; /* Length of the current line. */ |
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size_t wsz; /* Length of the current word. */ |
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size_t msz; /* Length of the longest line. */ |
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return(1); |
if (dp->string == NULL || *dp->string == '\0') |
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return 0; |
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str = mw ? mandoc_strdup(dp->string) : dp->string; |
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msz = lsz = 0; |
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for (beg = str; beg != NULL && *beg != '\0'; beg = end) { |
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end = mw ? strchr(beg, ' ') : NULL; |
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if (end != NULL) { |
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*end++ = '\0'; |
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while (*end == ' ') |
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end++; |
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} |
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wsz = (*tbl->slen)(beg, tbl->arg); |
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if (mw && lsz && lsz + 1 + wsz <= mw) |
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lsz += 1 + wsz; |
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else |
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lsz = wsz; |
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if (msz < lsz) |
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msz = lsz; |
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} |
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if (mw) |
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free((void *)str); |
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if (col != NULL && col->width < msz) |
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col->width = msz; |
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return msz; |
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} |
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static size_t |
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tblcalc_number(struct rofftbl *tbl, struct roffcol *col, |
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const struct tbl_opts *opts, const struct tbl_dat *dp) |
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{ |
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const char *cp, *lastdigit, *lastpoint; |
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size_t intsz, totsz; |
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char buf[2]; |
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if (dp->string == NULL || *dp->string == '\0') |
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return 0; |
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totsz = (*tbl->slen)(dp->string, tbl->arg); |
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if (col == NULL) |
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return totsz; |
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|
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/* |
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* Find the last digit and |
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* the last decimal point that is adjacent to a digit. |
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* The alignment indicator "\&" overrides everything. |
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*/ |
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lastdigit = lastpoint = NULL; |
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for (cp = dp->string; cp[0] != '\0'; cp++) { |
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if (cp[0] == '\\' && cp[1] == '&') { |
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lastdigit = lastpoint = cp; |
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break; |
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} else if (cp[0] == opts->decimal && |
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(isdigit((unsigned char)cp[1]) || |
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(cp > dp->string && isdigit((unsigned char)cp[-1])))) |
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lastpoint = cp; |
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else if (isdigit((unsigned char)cp[0])) |
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lastdigit = cp; |
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} |
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/* Not a number, treat as a literal string. */ |
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|
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if (lastdigit == NULL) { |
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if (col != NULL && col->width < totsz) |
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col->width = totsz; |
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return totsz; |
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} |
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|
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/* Measure the width of the integer part. */ |
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|
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if (lastpoint == NULL) |
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lastpoint = lastdigit + 1; |
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intsz = 0; |
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buf[1] = '\0'; |
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for (cp = dp->string; cp < lastpoint; cp++) { |
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buf[0] = cp[0]; |
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intsz += (*tbl->slen)(buf, tbl->arg); |
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} |
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|
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/* |
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* If this number has more integer digits than all numbers |
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* seen on earlier lines, shift them all to the right. |
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* If it has fewer, shift this number to the right. |
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*/ |
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|
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if (intsz > col->decimal) { |
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col->nwidth += intsz - col->decimal; |
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col->decimal = intsz; |
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} else |
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totsz += col->decimal - intsz; |
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|
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/* Update the maximum total width seen so far. */ |
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|
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if (totsz > col->nwidth) |
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col->nwidth = totsz; |
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if (col->nwidth > col->width) |
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col->width = col->nwidth; |
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return totsz; |
} |
} |