-/* $Id: out.c,v 1.6 2009/10/22 18:55:32 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 <assert.h>
-#include <ctype.h>
-#include <stdio.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, 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 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, enum roffscale def)
{
- char buf[BUFSIZ], hasd;
- int i;
- enum roffscale unit;
+ char *endptr;
- if ('\0' == *src)
- return(0);
+ dst->unit = def == SCALE_MAX ? SCALE_BU : def;
+ dst->scale = strtod(src, &endptr);
+ if (endptr == src)
+ return 0;
- i = hasd = 0;
-
- 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((u_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 ('P'):
- unit = SCALE_PC;
+ case 'n':
+ dst->unit = SCALE_EN;
break;
- case ('p'):
- unit = SCALE_PT;
+ case 'P':
+ dst->unit = SCALE_PC;
break;
- case ('f'):
- unit = SCALE_FS;
+ case 'p':
+ dst->unit = SCALE_PT;
break;
- case ('v'):
- unit = SCALE_VS;
+ case 'u':
+ dst->unit = SCALE_BU;
break;
- case ('m'):
- unit = SCALE_EM;
+ case 'v':
+ dst->unit = SCALE_VS;
break;
- case ('\0'):
+ case '\0':
+ endptr--;
+ /* FALLTHROUGH */
+ default:
if (SCALE_MAX == def)
- return(0);
- unit = SCALE_BU;
- break;
- case ('u'):
- unit = SCALE_BU;
+ return 0;
+ dst->unit = def;
break;
- case ('M'):
- unit = SCALE_MM;
- break;
- case ('n'):
- unit = SCALE_EN;
- break;
- default:
- return(0);
}
- if ((dst->scale = atof(buf)) < 0)
- dst->scale = 0;
- dst->unit = unit;
- dst->pt = hasd;
-
- return(1);
+ return *endptr == '\0' ? 2 : 1;
}
-
/*
- * Correctly writes the time in nroff form, which differs from standard
- * form in that a space isn't printed in lieu of the extra %e field for
- * single-digit dates.
+ * 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
-time2a(time_t t, char *dst, size_t sz)
+tblcalc(struct rofftbl *tbl, const struct tbl_span *sp,
+ size_t totalwidth)
{
- struct tm tm;
- char buf[5];
- char *p;
- size_t nsz;
+ 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;
- assert(sz > 1);
- localtime_r(&t, &tm);
+ /*
+ * 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.
+ */
- p = dst;
- nsz = 0;
+ assert(NULL == tbl->cols);
+ tbl->cols = mandoc_calloc((size_t)sp->opts->cols,
+ sizeof(struct roffcol));
+ opts = sp->opts;
- dst[0] = '\0';
+ 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);
+ }
+ }
- if (0 == (nsz = strftime(p, sz, "%B ", &tm)))
- return;
+ /*
+ * 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.
+ */
- p += (int)nsz;
- sz -= nsz;
+ 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 (0 == strftime(buf, sizeof(buf), "%e, ", &tm))
- return;
+ 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;
+ }
+ }
- nsz = strlcat(p, buf + (' ' == buf[0] ? 1 : 0), sz);
+ /*
+ * If there are any columns to maximize, find the total
+ * available width, deducting 3n margins between columns.
+ * Distribute the available width evenly.
+ */
- if (nsz >= sz)
- return;
+ if (nxcol && totalwidth) {
+ xwidth = totalwidth - xwidth - 3*maxcol -
+ (opts->opts & (TBL_OPT_BOX | TBL_OPT_DBOX) ?
+ 2 : !!opts->lvert + !!opts->rvert);
- p += (int)nsz;
- sz -= nsz;
+ /*
+ * 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.
+ */
- (void)strftime(p, sz, "%Y", &tm);
+ 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 TBL_CELL_DOWN:
+ break;
+ default:
+ 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 (sz > col->width)
+ col->width = sz;
+ if (d > col->decimal)
+ col->decimal = d;
+}
git.ckatri.com / mandoc.git / blobdiff