/* $Id$ */
/*
* Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2011 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
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* 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.
*/
int
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++;
}
if (BUFSIZ == i || (*src && *(src + 1)))
return(0);
buf[i] = '\0';
switch (*src) {
case 'c':
unit = SCALE_CM;
break;
case 'i':
unit = SCALE_IN;
break;
case 'P':
unit = SCALE_PC;
break;
case 'p':
unit = SCALE_PT;
break;
case 'f':
unit = SCALE_FS;
break;
case 'v':
unit = SCALE_VS;
break;
case 'm':
unit = SCALE_EM;
break;
case '\0':
if (SCALE_MAX == def)
return(0);
unit = SCALE_BU;
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);
}
/*
* 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)
{
const struct tbl_dat *dp;
struct roffcol *col;
int spans;
/*
* 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));
for ( ; 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;
assert(dp->layout);
col = &tbl->cols[dp->layout->head->ident];
tblcalc_data(tbl, col, sp->opts, dp);
}
}
}
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:
/* 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);
break;
case TBL_CELL_NUMBER:
tblcalc_number(tbl, col, opts, dp);
break;
case TBL_CELL_DOWN:
break;
default:
abort();
/* NOTREACHED */
}
}
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;
}
