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/* $OpenBSD: tbl_html.c,v 1.25 2018/12/12 21:54:30 schwarze Exp $ */
/*
* Copyright (c) 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2014, 2015, 2017, 2018 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 <sys/types.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "tbl.h"
#include "out.h"
#include "html.h"
static void html_tblopen(struct html *, const struct tbl_span *);
static size_t html_tbl_len(size_t, void *);
static size_t html_tbl_strlen(const char *, void *);
static size_t html_tbl_sulen(const struct roffsu *, void *);
static size_t
html_tbl_len(size_t sz, void *arg)
{
return sz;
}
static size_t
html_tbl_strlen(const char *p, void *arg)
{
return strlen(p);
}
static size_t
html_tbl_sulen(const struct roffsu *su, void *arg)
{
if (su->scale < 0.0)
return 0;
switch (su->unit) {
case SCALE_FS: /* 2^16 basic units */
return su->scale * 65536.0 / 24.0;
case SCALE_IN: /* 10 characters per inch */
return su->scale * 10.0;
case SCALE_CM: /* 2.54 cm per inch */
return su->scale * 10.0 / 2.54;
case SCALE_PC: /* 6 pica per inch */
case SCALE_VS:
return su->scale * 10.0 / 6.0;
case SCALE_EN:
case SCALE_EM:
return su->scale;
case SCALE_PT: /* 12 points per pica */
return su->scale * 10.0 / 6.0 / 12.0;
case SCALE_BU: /* 24 basic units per character */
return su->scale / 24.0;
case SCALE_MM: /* 1/1000 inch */
return su->scale / 100.0;
default:
abort();
}
}
static void
html_tblopen(struct html *h, const struct tbl_span *sp)
{
if (h->tbl.cols == NULL) {
h->tbl.len = html_tbl_len;
h->tbl.slen = html_tbl_strlen;
h->tbl.sulen = html_tbl_sulen;
tblcalc(&h->tbl, sp, 0, 0);
}
assert(NULL == h->tblt);
h->tblt = print_otag(h, TAG_TABLE, "c?ss", "tbl",
"border",
sp->opts->opts & TBL_OPT_ALLBOX ? "1" : NULL,
"border-style",
sp->opts->opts & TBL_OPT_DBOX ? "double" :
sp->opts->opts & TBL_OPT_BOX ? "solid" : NULL,
"border-top-style",
sp->pos == TBL_SPAN_DHORIZ ? "double" :
sp->pos == TBL_SPAN_HORIZ ? "solid" : NULL);
}
void
print_tblclose(struct html *h)
{
assert(h->tblt);
print_tagq(h, h->tblt);
h->tblt = NULL;
}
void
print_tbl(struct html *h, const struct tbl_span *sp)
{
const struct tbl_dat *dp;
const struct tbl_cell *cp;
const struct tbl_span *psp;
struct tag *tt;
const char *hspans, *vspans, *halign, *valign;
const char *bborder, *lborder, *rborder;
char hbuf[4], vbuf[4];
int i;
if (h->tblt == NULL)
html_tblopen(h, sp);
/*
* Horizontal lines spanning the whole table
* are handled by previous or following table rows.
*/
if (sp->pos != TBL_SPAN_DATA)
return;
/* Inhibit printing of spaces: we do padding ourselves. */
h->flags |= HTML_NONOSPACE;
h->flags |= HTML_NOSPACE;
/* Draw a vertical line left of this row? */
switch (sp->layout->vert) {
case 2:
lborder = "double";
break;
case 1:
lborder = "solid";
break;
default:
lborder = NULL;
break;
}
/* Draw a horizontal line below this row? */
bborder = NULL;
if ((psp = sp->next) != NULL) {
switch (psp->pos) {
case TBL_SPAN_DHORIZ:
bborder = "double";
break;
case TBL_SPAN_HORIZ:
bborder = "solid";
break;
default:
break;
}
}
tt = print_otag(h, TAG_TR, "ss",
"border-left-style", lborder,
"border-bottom-style", bborder);
for (dp = sp->first; dp != NULL; dp = dp->next) {
print_stagq(h, tt);
/*
* Do not generate <td> elements for continuations
* of spanned cells. Larger <td> elements covering
* this space were already generated earlier.
*/
cp = dp->layout;
if (cp->pos == TBL_CELL_SPAN || cp->pos == TBL_CELL_DOWN ||
(dp->string != NULL && strcmp(dp->string, "\\^") == 0))
continue;
/* Determine the attribute values. */
if (dp->hspans > 0) {
(void)snprintf(hbuf, sizeof(hbuf),
"%d", dp->hspans + 1);
hspans = hbuf;
} else
hspans = NULL;
if (dp->vspans > 0) {
(void)snprintf(vbuf, sizeof(vbuf),
"%d", dp->vspans + 1);
vspans = vbuf;
} else
vspans = NULL;
switch (cp->pos) {
case TBL_CELL_CENTRE:
halign = "center";
break;
case TBL_CELL_RIGHT:
case TBL_CELL_NUMBER:
halign = "right";
break;
default:
halign = NULL;
break;
}
if (cp->flags & TBL_CELL_TALIGN)
valign = "top";
else if (cp->flags & TBL_CELL_BALIGN)
valign = "bottom";
else
valign = NULL;
for (i = dp->hspans; i > 0; i--)
cp = cp->next;
switch (cp->vert) {
case 2:
rborder = "double";
break;
case 1:
rborder = "solid";
break;
default:
rborder = NULL;
break;
}
/* Print the element and the attributes. */
print_otag(h, TAG_TD, "??sss",
"colspan", hspans, "rowspan", vspans,
"vertical-align", valign,
"text-align", halign,
"border-right-style", rborder);
if (dp->string != NULL)
print_text(h, dp->string);
}
print_tagq(h, tt);
h->flags &= ~HTML_NONOSPACE;
if (sp->next == NULL) {
assert(h->tbl.cols);
free(h->tbl.cols);
h->tbl.cols = NULL;
print_tblclose(h);
}
}
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