-/* $Id: out.c,v 1.49 2014/08/01 19:25:52 schwarze Exp $ */
+/* $Id: out.c,v 1.65 2017/06/08 18:11:22 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 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
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
-#ifdef HAVE_CONFIG_H
#include "config.h"
-#endif
#include <sys/types.h>
#include <assert.h>
-#include <ctype.h>
-#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "out.h"
static void tblcalc_data(struct rofftbl *, struct roffcol *,
- const struct tbl_opts *, const struct tbl_dat *);
+ const struct tbl_opts *, const struct tbl_dat *,
+ size_t);
static void tblcalc_literal(struct rofftbl *, struct roffcol *,
- const struct tbl_dat *);
+ const struct tbl_dat *, size_t);
static void 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);
+ char *endptr;
- i = hasd = 0;
+ dst->unit = def == SCALE_MAX ? SCALE_BU : def;
+ dst->scale = strtod(src, &endptr);
+ if (endptr == src)
+ return NULL;
- switch (*src) {
- case '+':
- src++;
+ switch (*endptr++) {
+ case 'c':
+ dst->unit = SCALE_CM;
break;
- case '-':
- buf[i++] = *src++;
+ case 'i':
+ dst->unit = SCALE_IN;
break;
- default:
+ case 'f':
+ dst->unit = SCALE_FS;
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++;
- }
-
- if (BUFSIZ == i || (*src && *(src + 1)))
- return(0);
-
- buf[i] = '\0';
-
- switch (*src) {
- case 'c':
- unit = SCALE_CM;
+ case 'M':
+ dst->unit = SCALE_MM;
break;
- case 'i':
- unit = SCALE_IN;
+ case 'm':
+ dst->unit = SCALE_EM;
+ break;
+ case 'n':
+ dst->unit = SCALE_EN;
break;
case 'P':
- unit = SCALE_PC;
+ dst->unit = SCALE_PC;
break;
case 'p':
- unit = SCALE_PT;
+ dst->unit = SCALE_PT;
break;
- case 'f':
- unit = SCALE_FS;
+ case 'u':
+ dst->unit = SCALE_BU;
break;
case 'v':
- unit = SCALE_VS;
- break;
- case 'm':
- unit = SCALE_EM;
+ dst->unit = SCALE_VS;
break;
case '\0':
+ endptr--;
+ /* FALLTHROUGH */
+ default:
if (SCALE_MAX == def)
- return(0);
- unit = SCALE_BU;
+ return NULL;
+ dst->unit = def;
break;
- case 'u':
- unit = SCALE_BU;
- break;
- case 'M':
- unit = SCALE_MM;
- break;
- case 'n':
- unit = SCALE_EN;
- break;
- default:
- return(0);
}
-
- /* 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,
+ size_t totalwidth)
{
+ struct roffsu su;
+ const struct tbl_opts *opts;
const struct tbl_dat *dp;
struct roffcol *col;
+ size_t ewidth, xwidth;
int spans;
+ int icol, maxcol, necol, nxcol, quirkcol;
/*
* Allocate the master column specifiers. These will hold the
assert(NULL == tbl->cols);
tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
sizeof(struct roffcol));
+ opts = sp->opts;
- for ( ; sp; sp = sp->next) {
+ for (maxcol = -1; sp; sp = sp->next) {
if (TBL_SPAN_DATA != sp->pos)
continue;
spans = 1;
spans = dp->spans;
if (1 < spans)
continue;
- assert(dp->layout);
- col = &tbl->cols[dp->layout->head->ident];
- tblcalc_data(tbl, col, sp->opts, dp);
+ icol = dp->layout->col;
+ if (maxcol < icol)
+ maxcol = icol;
+ col = tbl->cols + icol;
+ col->flags |= dp->layout->flags;
+ if (dp->layout->flags & TBL_CELL_WIGN)
+ continue;
+ 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;
+ tblcalc_data(tbl, col, opts, dp, dp->block ?
+ totalwidth / (sp->opts->cols + 1) : 0);
+ }
+ }
+
+ /*
+ * 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->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 && totalwidth)
+ 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 && totalwidth) {
+ xwidth += 3*maxcol +
+ (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ?
+ 2 : !!opts->lvert + !!opts->rvert);
+ if (xwidth >= totalwidth)
+ return;
+ xwidth = totalwidth - 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
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)
col->width = sz;
break;
case TBL_CELL_LONG:
- /* FALLTHROUGH */
case TBL_CELL_CENTRE:
- /* FALLTHROUGH */
case TBL_CELL_LEFT:
- /* FALLTHROUGH */
case TBL_CELL_RIGHT:
- tblcalc_literal(tbl, col, dp);
+ tblcalc_literal(tbl, col, dp, mw);
break;
case TBL_CELL_NUMBER:
tblcalc_number(tbl, col, opts, dp);
break;
default:
abort();
- /* NOTREACHED */
}
}
static void
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 sz; /* Length of the current line. */
+
+ if (dp->string == NULL || *dp->string == '\0')
+ return;
+ str = mw ? mandoc_strdup(dp->string) : dp->string;
+ for (beg = str; beg != NULL && *beg != '\0'; beg = end) {
+ end = mw ? strchr(beg, ' ') : NULL;
+ if (end != NULL) {
+ *end++ = '\0';
+ while (*end == ' ')
+ end++;
+ }
+ sz = (*tbl->slen)(beg, tbl->arg);
+ if (col->width < sz)
+ col->width = sz;
+ }
+ if (mw)
+ free((void *)str);
}
static void
git.ckatri.com / mandoc.git / blobdiff