/* $Id$ */
/*
* Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@kth.se>
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "mandoc.h"
#include "out.h"
#include "term.h"
static size_t term_tbl_len(size_t, void *);
static size_t term_tbl_strlen(const char *, void *);
static void tbl_char(struct termp *, char, size_t);
static void tbl_data(struct termp *, const struct tbl *,
const struct tbl_dat *,
const struct roffcol *);
static void tbl_hframe(struct termp *, const struct tbl_span *);
static void tbl_literal(struct termp *, const struct tbl_dat *,
const struct roffcol *);
static void tbl_number(struct termp *, const struct tbl *,
const struct tbl_dat *,
const struct roffcol *);
static void tbl_hrule(struct termp *, const struct tbl_span *);
static void tbl_vframe(struct termp *, const struct tbl *);
static void tbl_vrule(struct termp *, const struct tbl_head *);
static size_t
term_tbl_strlen(const char *p, void *arg)
{
return(term_strlen((const struct termp *)arg, p));
}
static size_t
term_tbl_len(size_t sz, void *arg)
{
return(term_len((const struct termp *)arg, sz));
}
void
term_tbl(struct termp *tp, const struct tbl_span *sp)
{
const struct tbl_head *hp;
const struct tbl_dat *dp;
struct roffcol *col;
int spans;
size_t rmargin, maxrmargin;
rmargin = tp->rmargin;
maxrmargin = tp->maxrmargin;
tp->rmargin = tp->maxrmargin = TERM_MAXMARGIN;
/* Inhibit printing of spaces: we do padding ourselves. */
tp->flags |= TERMP_NONOSPACE;
tp->flags |= TERMP_NOSPACE;
/*
* The first time we're invoked for a given table block,
* calculate the table widths and decimal positions.
*/
if (TBL_SPAN_FIRST & sp->flags) {
term_flushln(tp);
tp->tbl.len = term_tbl_len;
tp->tbl.slen = term_tbl_strlen;
tp->tbl.arg = tp;
tblcalc(&tp->tbl, sp);
}
/* Horizontal frame at the start of boxed tables. */
if (TBL_SPAN_FIRST & sp->flags)
tbl_hframe(tp, sp);
/* Vertical frame at the start of each row. */
tbl_vframe(tp, sp->tbl);
/*
* Now print the actual data itself depending on the span type.
* Spanner spans get a horizontal rule; data spanners have their
* data printed by matching data to header.
*/
switch (sp->pos) {
case (TBL_SPAN_HORIZ):
/* FALLTHROUGH */
case (TBL_SPAN_DHORIZ):
tbl_hrule(tp, sp);
break;
case (TBL_SPAN_DATA):
/* Iterate over template headers. */
dp = sp->first;
spans = 0;
for (hp = sp->head; hp; hp = hp->next) {
/*
* If the current data header is invoked during
* a spanner ("spans" > 0), don't emit anything
* at all.
*/
switch (hp->pos) {
case (TBL_HEAD_VERT):
/* FALLTHROUGH */
case (TBL_HEAD_DVERT):
if (spans <= 0)
tbl_vrule(tp, hp);
continue;
case (TBL_HEAD_DATA):
break;
}
if (--spans >= 0)
continue;
col = &tp->tbl.cols[hp->ident];
tbl_data(tp, sp->tbl, dp, col);
/*
* Go to the next data cell and assign the
* number of subsequent spans, if applicable.
*/
if (dp) {
spans = dp->spans;
dp = dp->next;
}
}
break;
}
tbl_vframe(tp, sp->tbl);
term_flushln(tp);
/*
* If we're the last row, clean up after ourselves: clear the
* existing table configuration and set it to NULL.
*/
if (TBL_SPAN_LAST & sp->flags) {
tbl_hframe(tp, sp);
assert(tp->tbl.cols);
free(tp->tbl.cols);
tp->tbl.cols = NULL;
}
tp->flags &= ~TERMP_NONOSPACE;
tp->rmargin = rmargin;
tp->maxrmargin = maxrmargin;
}
static void
tbl_hrule(struct termp *tp, const struct tbl_span *sp)
{
const struct tbl_head *hp;
char c;
size_t width;
/*
* An hrule extends across the entire table and is demarked by a
* standalone `_' or whatnot in lieu of a table row. Spanning
* headers are marked by a `+', as are table boundaries.
*/
c = '-';
if (TBL_SPAN_DHORIZ == sp->pos)
c = '=';
/* FIXME: don't use `+' between data and a spanner! */
for (hp = sp->head; hp; hp = hp->next) {
width = tp->tbl.cols[hp->ident].width;
switch (hp->pos) {
case (TBL_HEAD_DATA):
if (hp->next)
width += 2;
tbl_char(tp, c, width);
break;
case (TBL_HEAD_DVERT):
tbl_char(tp, '+', width);
/* FALLTHROUGH */
case (TBL_HEAD_VERT):
tbl_char(tp, '+', width);
break;
default:
abort();
/* NOTREACHED */
}
}
}
static void
tbl_hframe(struct termp *tp, const struct tbl_span *sp)
{
const struct tbl_head *hp;
size_t width;
if ( ! (TBL_OPT_BOX & sp->tbl->opts ||
TBL_OPT_DBOX & sp->tbl->opts))
return;
/*
* Print out the horizontal part of a frame or double frame. A
* double frame has an unbroken `-' outer line the width of the
* table, bordered by `+'. The frame (or inner frame, in the
* case of the double frame) is a `-' bordered by `+' and broken
* by `+' whenever a span is encountered.
*/
if (TBL_OPT_DBOX & sp->tbl->opts) {
term_word(tp, "+");
for (hp = sp->head; hp; hp = hp->next) {
width = tp->tbl.cols[hp->ident].width;
tbl_char(tp, '-', width);
}
term_word(tp, "+");
term_flushln(tp);
}
term_word(tp, "+");
for (hp = sp->head; hp; hp = hp->next) {
width = tp->tbl.cols[hp->ident].width;
switch (hp->pos) {
case (TBL_HEAD_DATA):
tbl_char(tp, '-', width);
break;
default:
tbl_char(tp, '+', width);
break;
}
}
term_word(tp, "+");
term_flushln(tp);
}
static void
tbl_data(struct termp *tp, const struct tbl *tbl,
const struct tbl_dat *dp,
const struct roffcol *col)
{
if (NULL == dp) {
tbl_char(tp, ASCII_NBRSP, col->width);
return;
}
assert(dp->layout);
switch (dp->pos) {
case (TBL_DATA_NONE):
tbl_char(tp, ASCII_NBRSP, col->width);
return;
case (TBL_DATA_HORIZ):
/* FALLTHROUGH */
case (TBL_DATA_NHORIZ):
tbl_char(tp, '-', col->width);
return;
case (TBL_DATA_NDHORIZ):
/* FALLTHROUGH */
case (TBL_DATA_DHORIZ):
tbl_char(tp, '=', col->width);
return;
default:
break;
}
switch (dp->layout->pos) {
case (TBL_CELL_HORIZ):
tbl_char(tp, '-', col->width);
break;
case (TBL_CELL_DHORIZ):
tbl_char(tp, '=', col->width);
break;
case (TBL_CELL_LONG):
/* FALLTHROUGH */
case (TBL_CELL_CENTRE):
/* FALLTHROUGH */
case (TBL_CELL_LEFT):
/* FALLTHROUGH */
case (TBL_CELL_RIGHT):
tbl_literal(tp, dp, col);
break;
case (TBL_CELL_NUMBER):
tbl_number(tp, tbl, dp, col);
break;
case (TBL_CELL_DOWN):
tbl_char(tp, ASCII_NBRSP, col->width);
break;
default:
abort();
/* NOTREACHED */
}
}
static void
tbl_vrule(struct termp *tp, const struct tbl_head *hp)
{
switch (hp->pos) {
case (TBL_HEAD_VERT):
term_word(tp, "|");
break;
case (TBL_HEAD_DVERT):
term_word(tp, "||");
break;
default:
break;
}
}
static void
tbl_vframe(struct termp *tp, const struct tbl *tbl)
{
if (TBL_OPT_BOX & tbl->opts || TBL_OPT_DBOX & tbl->opts)
term_word(tp, "|");
}
static void
tbl_char(struct termp *tp, char c, size_t len)
{
size_t i, sz;
char cp[2];
cp[0] = c;
cp[1] = '\0';
sz = term_strlen(tp, cp);
for (i = 0; i < len; i += sz)
term_word(tp, cp);
}
static void
tbl_literal(struct termp *tp, const struct tbl_dat *dp,
const struct roffcol *col)
{
size_t padl, padr, ssz;
padl = padr = 0;
assert(dp->string);
ssz = term_len(tp, 1);
switch (dp->layout->pos) {
case (TBL_CELL_LONG):
padl = ssz;
padr = col->width - term_strlen(tp, dp->string) - ssz;
break;
case (TBL_CELL_CENTRE):
padr = col->width - term_strlen(tp, dp->string);
if (3 > padr)
break;
padl = (padr - 1) / 2;
padr -= padl;
break;
case (TBL_CELL_RIGHT):
padl = col->width - term_strlen(tp, dp->string);
break;
default:
padr = col->width - term_strlen(tp, dp->string);
break;
}
tbl_char(tp, ASCII_NBRSP, padl);
term_word(tp, dp->string);
tbl_char(tp, ASCII_NBRSP, padr + 2);
}
static void
tbl_number(struct termp *tp, const struct tbl *tbl,
const struct tbl_dat *dp,
const struct roffcol *col)
{
char *cp;
char buf[2];
size_t sz, psz, ssz, d, padl;
int i;
/*
* See calc_data_number(). Left-pad by taking the offset of our
* and the maximum decimal; right-pad by the remaining amount.
*/
assert(dp->string);
sz = term_strlen(tp, dp->string);
buf[0] = tbl->decimal;
buf[1] = '\0';
psz = term_strlen(tp, buf);
if (NULL != (cp = strrchr(dp->string, tbl->decimal))) {
buf[1] = '\0';
for (ssz = 0, i = 0; cp != &dp->string[i]; i++) {
buf[0] = dp->string[i];
ssz += term_strlen(tp, buf);
}
d = ssz + psz;
} else
d = sz + psz;
sz += term_len(tp, 2);
d += term_len(tp, 1);
padl = col->decimal - d;
tbl_char(tp, ASCII_NBRSP, padl);
term_word(tp, dp->string);
tbl_char(tp, ASCII_NBRSP, col->width - sz - padl);
}
