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/* $OpenBSD: tbl_data.c,v 1.28 2015/10/06 18:30:44 schwarze Exp $ */
/*
* Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2011, 2015 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 <ctype.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "mandoc.h"
#include "mandoc_aux.h"
#include "libmandoc.h"
#include "libroff.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;
struct tbl_cell *cp;
int sv;
/* 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;
/*
* Stop processing when we reach the end of the available layout
* cells. This means that we have extra input.
*/
if (cp == NULL) {
mandoc_msg(MANDOCERR_TBLDATA_EXTRA, tbl->parse,
ln, *pos, p + *pos);
/* Skip to the end... */
while (p[*pos])
(*pos)++;
return;
}
dat = mandoc_calloc(1, sizeof(*dat));
dat->layout = cp;
dat->pos = TBL_DATA_NONE;
dat->spans = 0;
for (cp = cp->next; cp != NULL; cp = cp->next)
if (cp->pos == TBL_CELL_SPAN)
dat->spans++;
else
break;
if (dp->last == NULL)
dp->first = dat;
else
dp->last->next = dat;
dp->last = dat;
sv = *pos;
while (p[*pos] && p[*pos] != tbl->opts.tab)
(*pos)++;
/*
* 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 - sv == 2 && p[sv] == 'T' && p[sv + 1] == '{') {
tbl->part = TBL_PART_CDATA;
return;
}
dat->string = mandoc_strndup(p + sv, *pos - sv);
if (p[*pos])
(*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,
tbl->parse, ln, sv, dat->string);
}
int
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 1;
} else if (p[pos] == '\0') {
tbl->part = TBL_PART_DATA;
return 1;
}
/* Fallthrough: T} is part of a word. */
}
dat->pos = TBL_DATA_DATA;
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, tbl->parse,
ln, pos, dat->string);
return 0;
}
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_span *dp;
struct tbl_row *rp;
/*
* Choose a layout row: take the one following the last parsed
* span's. If that doesn't exist, use the last parsed span's.
* If there's no last parsed span, use the first row. Lastly,
* if the last span was a horizontal line, use the same layout
* (it doesn't "consume" the layout).
*/
if (tbl->last_span != NULL) {
if (tbl->last_span->pos == TBL_SPAN_DATA) {
for (rp = tbl->last_span->layout->next;
rp != NULL && rp->first != NULL;
rp = rp->next) {
switch (rp->first->pos) {
case TBL_CELL_HORIZ:
dp = newspan(tbl, ln, rp);
dp->pos = TBL_SPAN_HORIZ;
continue;
case TBL_CELL_DHORIZ:
dp = newspan(tbl, ln, rp);
dp->pos = TBL_SPAN_DHORIZ;
continue;
default:
break;
}
break;
}
} else
rp = tbl->last_span->layout;
if (rp == NULL)
rp = tbl->last_span->layout;
} else
rp = tbl->first_row;
assert(rp);
dp = newspan(tbl, ln, rp);
if ( ! strcmp(p, "_")) {
dp->pos = TBL_SPAN_HORIZ;
return;
} else if ( ! strcmp(p, "=")) {
dp->pos = TBL_SPAN_DHORIZ;
return;
}
dp->pos = TBL_SPAN_DATA;
while (p[pos] != '\0')
getdata(tbl, dp, ln, p, &pos);
}
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