/* $Id$ */
/*
* Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2011,2015,2017-2019,2021 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 <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "mandoc_aux.h"
#include "mandoc.h"
#include "tbl.h"
#include "libmandoc.h"
#include "tbl_int.h"
static void getdata(struct tbl_node *, struct tbl_span *,
int, const char *, int *);
static struct tbl_span *newspan(struct tbl_node *, int,
struct tbl_row *);
static void
getdata(struct tbl_node *tbl, struct tbl_span *dp,
int ln, const char *p, int *pos)
{
struct tbl_dat *dat, *pdat;
struct tbl_cell *cp;
struct tbl_span *pdp;
const char *ccp;
int startpos, endpos;
/*
* Determine the length of the string in the cell
* and advance the parse point to the end of the cell.
*/
startpos = *pos;
ccp = p + startpos;
while (*ccp != '\0' && *ccp != tbl->opts.tab)
if (*ccp++ == '\\')
mandoc_escape(&ccp, NULL, NULL);
*pos = ccp - p;
/* Advance to the next layout cell, skipping spanners. */
cp = dp->last == NULL ? dp->layout->first : dp->last->layout->next;
while (cp != NULL && cp->pos == TBL_CELL_SPAN)
cp = cp->next;
/*
* If the current layout row is out of cells, allocate
* a new cell if another row of the table has at least
* this number of columns, or discard the input if we
* are beyond the last column of the table as a whole.
*/
if (cp == NULL) {
if (dp->layout->last->col + 1 < dp->opts->cols) {
cp = mandoc_calloc(1, sizeof(*cp));
cp->pos = TBL_CELL_LEFT;
cp->font = ESCAPE_FONTROMAN;
cp->spacing = SIZE_MAX;
dp->layout->last->next = cp;
cp->col = dp->layout->last->col + 1;
dp->layout->last = cp;
} else {
mandoc_msg(MANDOCERR_TBLDATA_EXTRA,
ln, startpos, "%s", p + startpos);
while (p[*pos] != '\0')
(*pos)++;
return;
}
}
dat = mandoc_malloc(sizeof(*dat));
dat->layout = cp;
dat->next = NULL;
dat->string = NULL;
dat->hspans = 0;
dat->vspans = 0;
dat->block = 0;
dat->pos = TBL_DATA_NONE;
/*
* Increment the number of vertical spans in a data cell above,
* if this cell vertically extends one or more cells above.
* The iteration must be done over data rows,
* not over layout rows, because one layout row
* can be reused for more than one data row.
*/
if (cp->pos == TBL_CELL_DOWN ||
(*pos - startpos == 2 &&
p[startpos] == '\\' && p[startpos + 1] == '^')) {
pdp = dp;
while ((pdp = pdp->prev) != NULL) {
pdat = pdp->first;
while (pdat != NULL &&
pdat->layout->col < dat->layout->col)
pdat = pdat->next;
if (pdat == NULL)
break;
if (pdat->layout->pos != TBL_CELL_DOWN &&
strcmp(pdat->string, "\\^") != 0) {
pdat->vspans++;
break;
}
}
}
/*
* Count the number of horizontal spans to the right of this cell.
* This is purely a matter of the layout, independent of the data.
*/
for (cp = cp->next; cp != NULL; cp = cp->next)
if (cp->pos == TBL_CELL_SPAN)
dat->hspans++;
else
break;
/* Append the new data cell to the data row. */
if (dp->last == NULL)
dp->first = dat;
else
dp->last->next = dat;
dp->last = dat;
/*
* Check for a continued-data scope opening. This consists of a
* trailing `T{' at the end of the line. Subsequent lines,
* until a standalone `T}', are included in our cell.
*/
if (*pos - startpos == 2 &&
p[startpos] == 'T' && p[startpos + 1] == '{') {
tbl->part = TBL_PART_CDATA;
return;
}
endpos = *pos;
if (dp->opts->opts & TBL_OPT_NOSPACE) {
while (p[startpos] == ' ')
startpos++;
while (endpos > startpos && p[endpos - 1] == ' ')
endpos--;
}
dat->string = mandoc_strndup(p + startpos, endpos - startpos);
if (p[*pos] != '\0')
(*pos)++;
if ( ! strcmp(dat->string, "_"))
dat->pos = TBL_DATA_HORIZ;
else if ( ! strcmp(dat->string, "="))
dat->pos = TBL_DATA_DHORIZ;
else if ( ! strcmp(dat->string, "\\_"))
dat->pos = TBL_DATA_NHORIZ;
else if ( ! strcmp(dat->string, "\\="))
dat->pos = TBL_DATA_NDHORIZ;
else
dat->pos = TBL_DATA_DATA;
if ((dat->layout->pos == TBL_CELL_HORIZ ||
dat->layout->pos == TBL_CELL_DHORIZ ||
dat->layout->pos == TBL_CELL_DOWN) &&
dat->pos == TBL_DATA_DATA && *dat->string != '\0')
mandoc_msg(MANDOCERR_TBLDATA_SPAN,
ln, startpos, "%s", dat->string);
}
void
tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
{
struct tbl_dat *dat;
size_t sz;
dat = tbl->last_span->last;
if (p[pos] == 'T' && p[pos + 1] == '}') {
pos += 2;
if (p[pos] == tbl->opts.tab) {
tbl->part = TBL_PART_DATA;
pos++;
while (p[pos] != '\0')
getdata(tbl, tbl->last_span, ln, p, &pos);
return;
} else if (p[pos] == '\0') {
tbl->part = TBL_PART_DATA;
return;
}
/* Fallthrough: T} is part of a word. */
}
dat->pos = TBL_DATA_DATA;
dat->block = 1;
if (dat->string != NULL) {
sz = strlen(p + pos) + strlen(dat->string) + 2;
dat->string = mandoc_realloc(dat->string, sz);
(void)strlcat(dat->string, " ", sz);
(void)strlcat(dat->string, p + pos, sz);
} else
dat->string = mandoc_strdup(p + pos);
if (dat->layout->pos == TBL_CELL_DOWN)
mandoc_msg(MANDOCERR_TBLDATA_SPAN,
ln, pos, "%s", dat->string);
}
static struct tbl_span *
newspan(struct tbl_node *tbl, int line, struct tbl_row *rp)
{
struct tbl_span *dp;
dp = mandoc_calloc(1, sizeof(*dp));
dp->line = line;
dp->opts = &tbl->opts;
dp->layout = rp;
dp->prev = tbl->last_span;
if (dp->prev == NULL) {
tbl->first_span = dp;
tbl->current_span = NULL;
} else
dp->prev->next = dp;
tbl->last_span = dp;
return dp;
}
void
tbl_data(struct tbl_node *tbl, int ln, const char *p, int pos)
{
struct tbl_row *rp;
struct tbl_cell *cp;
struct tbl_span *sp;
for (sp = tbl->last_span; sp != NULL; sp = sp->prev)
if (sp->pos == TBL_SPAN_DATA)
break;
rp = sp == NULL ? tbl->first_row :
sp->layout->next == NULL ? sp->layout : sp->layout->next;
assert(rp != NULL);
if (p[1] == '\0') {
switch (p[0]) {
case '.':
/*
* Empty request lines must be handled here
* and cannot be discarded in roff_parseln()
* because in the layout section, they
* are significant and end the layout.
*/
return;
case '_':
sp = newspan(tbl, ln, rp);
sp->pos = TBL_SPAN_HORIZ;
return;
case '=':
sp = newspan(tbl, ln, rp);
sp->pos = TBL_SPAN_DHORIZ;
return;
default:
break;
}
}
/*
* If the layout row contains nothing but horizontal lines,
* allocate an empty span for it and assign the current span
* to the next layout row accepting data.
*/
while (rp->next != NULL) {
if (rp->last->col + 1 < tbl->opts.cols)
break;
for (cp = rp->first; cp != NULL; cp = cp->next)
if (cp->pos != TBL_CELL_HORIZ &&
cp->pos != TBL_CELL_DHORIZ)
break;
if (cp != NULL)
break;
sp = newspan(tbl, ln, rp);
sp->pos = TBL_SPAN_DATA;
rp = rp->next;
}
/* Process a real data row. */
sp = newspan(tbl, ln, rp);
sp->pos = TBL_SPAN_DATA;
while (p[pos] != '\0')
getdata(tbl, sp, ln, p, &pos);
}
