/* $Id$ */
/*
* Copyright (c) 2009, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2011, 2012, 2014 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_opts *,
const struct tbl_dat *,
const struct roffcol *);
static size_t tbl_rulewidth(struct termp *, const struct tbl_head *);
static void tbl_hframe(struct termp *, const struct tbl_span *, int);
static void tbl_literal(struct termp *, const struct tbl_dat *,
const struct roffcol *);
static void tbl_number(struct termp *, const struct tbl_opts *,
const struct tbl_dat *,
const struct roffcol *);
static void tbl_hrule(struct termp *, const struct tbl_span *);
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) {
if (TBL_OPT_DBOX & sp->opts->opts)
tbl_hframe(tp, sp, 1);
if (TBL_OPT_DBOX & sp->opts->opts ||
TBL_OPT_BOX & sp->opts->opts)
tbl_hframe(tp, sp, 0);
}
/* Vertical frame at the start of each row. */
if ((TBL_OPT_BOX | TBL_OPT_DBOX) & sp->opts->opts ||
sp->head->vert)
term_word(tp, TBL_SPAN_HORIZ == sp->pos ||
TBL_SPAN_DHORIZ == sp->pos ? "+" : "|");
/*
* 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.
*/
if (--spans >= 0)
continue;
/* Separate columns. */
if (NULL != hp->prev)
tbl_vrule(tp, hp);
col = &tp->tbl.cols[hp->ident];
tbl_data(tp, sp->opts, 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;
}
/* Vertical frame at the end of each row. */
if ((TBL_OPT_BOX | TBL_OPT_DBOX) & sp->opts->opts ||
sp->layout->vert)
term_word(tp, TBL_SPAN_HORIZ == sp->pos ||
TBL_SPAN_DHORIZ == sp->pos ? "+" : " |");
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) {
if (TBL_OPT_DBOX & sp->opts->opts ||
TBL_OPT_BOX & sp->opts->opts) {
tbl_hframe(tp, sp, 0);
tp->skipvsp = 1;
}
if (TBL_OPT_DBOX & sp->opts->opts) {
tbl_hframe(tp, sp, 1);
tp->skipvsp = 2;
}
assert(tp->tbl.cols);
free(tp->tbl.cols);
tp->tbl.cols = NULL;
}
tp->flags &= ~TERMP_NONOSPACE;
tp->rmargin = rmargin;
tp->maxrmargin = maxrmargin;
}
/*
* Horizontal rules extend across the entire table.
* Calculate the width by iterating over columns.
*/
static size_t
tbl_rulewidth(struct termp *tp, const struct tbl_head *hp)
{
size_t width;
width = tp->tbl.cols[hp->ident].width;
/* Account for leading blanks. */
if (hp->prev)
width += 2 - hp->vert;
/* Account for trailing blank. */
width++;
return(width);
}
/*
* Rules inside the table can be single or double
* and have crossings with vertical rules marked with pluses.
*/
static void
tbl_hrule(struct termp *tp, const struct tbl_span *sp)
{
const struct tbl_head *hp;
char c;
c = '-';
if (TBL_SPAN_DHORIZ == sp->pos)
c = '=';
for (hp = sp->head; hp; hp = hp->next) {
if (hp->prev && hp->vert)
tbl_char(tp, '+', hp->vert);
tbl_char(tp, c, tbl_rulewidth(tp, hp));
}
}
/*
* Rules above and below the table are always single
* and have an additional plus at the beginning and end.
* For double frames, this function is called twice,
* and the outer one does not have crossings.
*/
static void
tbl_hframe(struct termp *tp, const struct tbl_span *sp, int outer)
{
const struct tbl_head *hp;
term_word(tp, "+");
for (hp = sp->head; hp; hp = hp->next) {
if (hp->prev && hp->vert)
tbl_char(tp, (outer ? '-' : '+'), hp->vert);
tbl_char(tp, '-', tbl_rulewidth(tp, hp));
}
term_word(tp, "+");
term_flushln(tp);
}
static void
tbl_data(struct termp *tp, const struct tbl_opts *opts,
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, opts, 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)
{
tbl_char(tp, ASCII_NBRSP, 1);
if (0 < hp->vert)
tbl_char(tp, '|', hp->vert);
if (2 > hp->vert)
tbl_char(tp, ASCII_NBRSP, 2 - hp->vert);
}
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)
{
struct tbl_head *hp;
size_t width, len, padl, padr;
int spans;
assert(dp->string);
len = term_strlen(tp, dp->string);
hp = dp->layout->head->next;
width = col->width;
for (spans = dp->spans; spans--; hp = hp->next)
width += tp->tbl.cols[hp->ident].width + 3;
padr = width > len ? width - len : 0;
padl = 0;
switch (dp->layout->pos) {
case TBL_CELL_LONG:
padl = term_len(tp, 1);
padr = padr > padl ? padr - padl : 0;
break;
case TBL_CELL_CENTRE:
if (2 > padr)
break;
padl = padr / 2;
padr -= padl;
break;
case TBL_CELL_RIGHT:
padl = padr;
padr = 0;
break;
default:
break;
}
tbl_char(tp, ASCII_NBRSP, padl);
term_word(tp, dp->string);
tbl_char(tp, ASCII_NBRSP, padr);
}
static void
tbl_number(struct termp *tp, const struct tbl_opts *opts,
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] = opts->decimal;
buf[1] = '\0';
psz = term_strlen(tp, buf);
if (NULL != (cp = strrchr(dp->string, opts->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;
padl = col->decimal - d;
tbl_char(tp, ASCII_NBRSP, padl);
term_word(tp, dp->string);
if (col->width > sz + padl)
tbl_char(tp, ASCII_NBRSP, col->width - sz - padl);
}
