-/* $Id: out.c,v 1.3 2009/10/07 12:35:24 kristaps Exp $ */
+/* $Id: out.c,v 1.62 2015/10/12 00:08:16 schwarze Exp $ */
/*
- * Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se>
+ * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2011, 2014, 2015 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.
*/
+#include "config.h"
+
#include <sys/types.h>
-#include <ctype.h>
-#include <stdio.h>
+#include <assert.h>
#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include "mandoc_aux.h"
+#include "mandoc.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 *,
+ 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, which stipulates the following:
- *
- * (1) A scaling unit is a signed/unsigned integer/float with or
- * without a unit.
- *
- * (2) The following units exist:
- * c Centimeter
- * i Inch
- * P Pica = 1/6 inch
- * p Point = 1/72 inch
- * m Em = the font size in points (width of letter m)
- * M 100th of an Em
- * n En = Em/2
- * u Basic unit for actual output device
- * v Vertical line space in basic units scaled point =
- * 1/sizescale of a point (defined in font DESC file)
- * f Scale by 65536.
+
+/*
+ * 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 2 on complete success, 1 when a conversion was done,
+ * but there was trailing garbage, and 0 on total failure.
*/
int
-a2roffsu(const char *src, struct roffsu *dst)
+a2roffsu(const char *src, struct roffsu *dst, enum roffscale def)
{
- char buf[BUFSIZ], *p;
- int i;
- enum roffscale unit;
-
- for (p = buf, i = 0; i < BUFSIZ && isdigit((u_char)*src); i++)
- *p++ = *src++;
-
- if (BUFSIZ == i || (*src && *(src + 1)))
- return(0);
+ char *endptr;
- *p = '\0';
+ dst->unit = def == SCALE_MAX ? SCALE_BU : def;
+ dst->scale = strtod(src, &endptr);
+ if (endptr == src)
+ return 0;
- switch (*src) {
- case ('c'):
- unit = SCALE_CM;
+ switch (*endptr++) {
+ case 'c':
+ dst->unit = SCALE_CM;
break;
- case ('i'):
- unit = SCALE_IN;
+ case 'i':
+ dst->unit = SCALE_IN;
break;
- case ('P'):
- unit = SCALE_PC;
+ case 'f':
+ dst->unit = SCALE_FS;
break;
- case ('p'):
- unit = SCALE_PT;
+ case 'M':
+ dst->unit = SCALE_MM;
break;
- case ('f'):
- unit = SCALE_FS;
+ case 'm':
+ dst->unit = SCALE_EM;
break;
- case ('v'):
- unit = SCALE_VS;
+ case 'n':
+ dst->unit = SCALE_EN;
break;
- case ('m'):
- unit = SCALE_EM;
+ case 'P':
+ dst->unit = SCALE_PC;
break;
- case ('\0'):
+ case 'p':
+ dst->unit = SCALE_PT;
+ break;
+ case 'u':
+ dst->unit = SCALE_BU;
+ break;
+ case 'v':
+ dst->unit = SCALE_VS;
+ break;
+ case '\0':
+ endptr--;
/* FALLTHROUGH */
- case ('u'):
- unit = SCALE_BU;
+ default:
+ if (SCALE_MAX == def)
+ return 0;
+ dst->unit = def;
break;
- case ('M'):
- unit = SCALE_MM;
+ }
+
+ return *endptr == '\0' ? 2 : 1;
+}
+
+/*
+ * Calculate the abstract widths and decimal positions of columns in a
+ * table. This routine allocates the columns structures then runs over
+ * all rows and cells in the table. The function pointers in "tbl" are
+ * used for the actual width calculations.
+ */
+void
+tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
+ size_t totalwidth)
+{
+ 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
+ * widths and decimal positions for all cells in the column. It
+ * must be freed and nullified by the caller.
+ */
+
+ assert(NULL == tbl->cols);
+ tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
+ sizeof(struct roffcol));
+ opts = sp->opts;
+
+ for (maxcol = -1; sp; sp = sp->next) {
+ if (TBL_SPAN_DATA != sp->pos)
+ 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)
+ continue;
+ spans = dp->spans;
+ if (1 < spans)
+ continue;
+ 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;
+ tblcalc_data(tbl, col, opts, dp);
+ }
+ }
+
+ /*
+ * 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 = totalwidth - xwidth - 3*maxcol -
+ (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ?
+ 2 : !!opts->lvert + !!opts->rvert);
+
+ /*
+ * 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)
+{
+ size_t sz;
+
+ /* Branch down into data sub-types. */
+
+ switch (dp->layout->pos) {
+ case TBL_CELL_HORIZ:
+ case TBL_CELL_DHORIZ:
+ sz = (*tbl->len)(1, tbl->arg);
+ if (col->width < sz)
+ col->width = sz;
+ break;
+ case TBL_CELL_LONG:
+ case TBL_CELL_CENTRE:
+ case TBL_CELL_LEFT:
+ case TBL_CELL_RIGHT:
+ tblcalc_literal(tbl, col, dp);
+ break;
+ case TBL_CELL_NUMBER:
+ tblcalc_number(tbl, col, opts, dp);
break;
- case ('n'):
- unit = SCALE_EN;
+ case TBL_CELL_DOWN:
break;
default:
- return(0);
+ abort();
}
+}
+
+static void
+tblcalc_literal(struct rofftbl *tbl, struct roffcol *col,
+ const struct tbl_dat *dp)
+{
+ size_t sz;
+ const char *str;
+
+ str = dp->string ? dp->string : "";
+ sz = (*tbl->slen)(str, tbl->arg);
+
+ if (col->width < sz)
+ col->width = sz;
+}
+
+static void
+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;
+ char buf[2];
+
+ /*
+ * 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.
+ */
+
+ str = dp->string ? dp->string : "";
+ sz = (*tbl->slen)(str, tbl->arg);
+
+ /* FIXME: TBL_DATA_HORIZ et al.? */
+
+ buf[0] = opts->decimal;
+ buf[1] = '\0';
+
+ psz = (*tbl->slen)(buf, tbl->arg);
+
+ 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;
+
+ /* Adjust the settings for this column. */
+
+ if (col->decimal > d) {
+ sz += col->decimal - d;
+ d = col->decimal;
+ } else
+ col->width += d - col->decimal;
- if ((dst->scale = atoi(buf)) < 0)
- dst->scale = 0;
- dst->unit = unit;
- return(1);
+ if (sz > col->width)
+ col->width = sz;
+ if (d > col->decimal)
+ col->decimal = d;
}
git.ckatri.com / mandoc.git / blobdiff