/* $Id$ */
/*
* Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
* Copyright (c) 2012, 2014, 2015, 2017 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 <ctype.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include "mandoc.h"
#include "mandoc_aux.h"
#include "libmandoc.h"
#include "libroff.h"
struct tbl_phrase {
char name;
enum tbl_cellt key;
};
static const struct tbl_phrase keys[] = {
{ 'c', TBL_CELL_CENTRE },
{ 'r', TBL_CELL_RIGHT },
{ 'l', TBL_CELL_LEFT },
{ 'n', TBL_CELL_NUMBER },
{ 's', TBL_CELL_SPAN },
{ 'a', TBL_CELL_LONG },
{ '^', TBL_CELL_DOWN },
{ '-', TBL_CELL_HORIZ },
{ '_', TBL_CELL_HORIZ },
{ '=', TBL_CELL_DHORIZ }
};
#define KEYS_MAX ((int)(sizeof(keys)/sizeof(keys[0])))
static void mods(struct tbl_node *, struct tbl_cell *,
int, const char *, int *);
static void cell(struct tbl_node *, struct tbl_row *,
int, const char *, int *);
static struct tbl_cell *cell_alloc(struct tbl_node *, struct tbl_row *,
enum tbl_cellt);
static void
mods(struct tbl_node *tbl, struct tbl_cell *cp,
int ln, const char *p, int *pos)
{
char *endptr;
size_t sz;
mod:
while (p[*pos] == ' ' || p[*pos] == '\t')
(*pos)++;
/* Row delimiters and cell specifiers end modifier lists. */
if (strchr(".,-=^_ACLNRSaclnrs", p[*pos]) != NULL)
return;
/* Throw away parenthesised expression. */
if ('(' == p[*pos]) {
(*pos)++;
while (p[*pos] && ')' != p[*pos])
(*pos)++;
if (')' == p[*pos]) {
(*pos)++;
goto mod;
}
mandoc_msg(MANDOCERR_TBLLAYOUT_PAR, tbl->parse,
ln, *pos, NULL);
return;
}
/* Parse numerical spacing from modifier string. */
if (isdigit((unsigned char)p[*pos])) {
cp->spacing = strtoull(p + *pos, &endptr, 10);
*pos = endptr - p;
goto mod;
}
switch (tolower((unsigned char)p[(*pos)++])) {
case 'b':
cp->flags |= TBL_CELL_BOLD;
goto mod;
case 'd':
cp->flags |= TBL_CELL_BALIGN;
goto mod;
case 'e':
cp->flags |= TBL_CELL_EQUAL;
goto mod;
case 'f':
break;
case 'i':
cp->flags |= TBL_CELL_ITALIC;
goto mod;
case 'm':
mandoc_msg(MANDOCERR_TBLLAYOUT_MOD, tbl->parse,
ln, *pos, "m");
goto mod;
case 'p':
case 'v':
if (p[*pos] == '-' || p[*pos] == '+')
(*pos)++;
while (isdigit((unsigned char)p[*pos]))
(*pos)++;
goto mod;
case 't':
cp->flags |= TBL_CELL_TALIGN;
goto mod;
case 'u':
cp->flags |= TBL_CELL_UP;
goto mod;
case 'w':
sz = 0;
if (p[*pos] == '(') {
(*pos)++;
while (p[*pos + sz] != '\0' && p[*pos + sz] != ')')
sz++;
} else
while (isdigit((unsigned char)p[*pos + sz]))
sz++;
if (sz) {
free(cp->wstr);
cp->wstr = mandoc_strndup(p + *pos, sz);
*pos += sz;
if (p[*pos] == ')')
(*pos)++;
}
goto mod;
case 'x':
cp->flags |= TBL_CELL_WMAX;
goto mod;
case 'z':
cp->flags |= TBL_CELL_WIGN;
goto mod;
case '|':
if (cp->vert < 2)
cp->vert++;
else
mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
tbl->parse, ln, *pos - 1, NULL);
goto mod;
default:
mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
ln, *pos - 1, "%c", p[*pos - 1]);
goto mod;
}
/* Ignore parenthised font names for now. */
if (p[*pos] == '(')
goto mod;
/* Support only one-character font-names for now. */
if (p[*pos] == '\0' || (p[*pos + 1] != ' ' && p[*pos + 1] != '.')) {
mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
ln, *pos, "TS %s", p + *pos - 1);
if (p[*pos] != '\0')
(*pos)++;
if (p[*pos] != '\0')
(*pos)++;
goto mod;
}
switch (p[(*pos)++]) {
case '3':
case 'B':
cp->flags |= TBL_CELL_BOLD;
goto mod;
case '2':
case 'I':
cp->flags |= TBL_CELL_ITALIC;
goto mod;
case '1':
case 'R':
goto mod;
default:
mandoc_vmsg(MANDOCERR_FT_BAD, tbl->parse,
ln, *pos - 1, "TS f%c", p[*pos - 1]);
goto mod;
}
}
static void
cell(struct tbl_node *tbl, struct tbl_row *rp,
int ln, const char *p, int *pos)
{
int i;
enum tbl_cellt c;
/* Handle leading vertical lines */
while (p[*pos] == ' ' || p[*pos] == '\t' || p[*pos] == '|') {
if (p[*pos] == '|') {
if (rp->vert < 2)
rp->vert++;
else
mandoc_msg(MANDOCERR_TBLLAYOUT_VERT,
tbl->parse, ln, *pos, NULL);
}
(*pos)++;
}
again:
while (p[*pos] == ' ' || p[*pos] == '\t')
(*pos)++;
if (p[*pos] == '.' || p[*pos] == '\0')
return;
/* Parse the column position (`c', `l', `r', ...). */
for (i = 0; i < KEYS_MAX; i++)
if (tolower((unsigned char)p[*pos]) == keys[i].name)
break;
if (i == KEYS_MAX) {
mandoc_vmsg(MANDOCERR_TBLLAYOUT_CHAR, tbl->parse,
ln, *pos, "%c", p[*pos]);
(*pos)++;
goto again;
}
c = keys[i].key;
/* Special cases of spanners. */
if (c == TBL_CELL_SPAN) {
if (rp->last == NULL)
mandoc_msg(MANDOCERR_TBLLAYOUT_SPAN,
tbl->parse, ln, *pos, NULL);
else if (rp->last->pos == TBL_CELL_HORIZ ||
rp->last->pos == TBL_CELL_DHORIZ)
c = rp->last->pos;
} else if (c == TBL_CELL_DOWN && rp == tbl->first_row)
mandoc_msg(MANDOCERR_TBLLAYOUT_DOWN,
tbl->parse, ln, *pos, NULL);
(*pos)++;
/* Allocate cell then parse its modifiers. */
mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos);
}
void
tbl_layout(struct tbl_node *tbl, int ln, const char *p, int pos)
{
struct tbl_row *rp;
rp = NULL;
for (;;) {
/* Skip whitespace before and after each cell. */
while (p[pos] == ' ' || p[pos] == '\t')
pos++;
switch (p[pos]) {
case ',': /* Next row on this input line. */
pos++;
rp = NULL;
continue;
case '\0': /* Next row on next input line. */
return;
case '.': /* End of layout. */
pos++;
tbl->part = TBL_PART_DATA;
/*
* When the layout is completely empty,
* default to one left-justified column.
*/
if (tbl->first_row == NULL) {
tbl->first_row = tbl->last_row =
mandoc_calloc(1, sizeof(*rp));
}
if (tbl->first_row->first == NULL) {
mandoc_msg(MANDOCERR_TBLLAYOUT_NONE,
tbl->parse, ln, pos, NULL);
cell_alloc(tbl, tbl->first_row,
TBL_CELL_LEFT);
if (tbl->opts.lvert < tbl->first_row->vert)
tbl->opts.lvert = tbl->first_row->vert;
return;
}
/*
* Search for the widest line
* along the left and right margins.
*/
for (rp = tbl->first_row; rp; rp = rp->next) {
if (tbl->opts.lvert < rp->vert)
tbl->opts.lvert = rp->vert;
if (rp->last != NULL &&
rp->last->col + 1 == tbl->opts.cols &&
tbl->opts.rvert < rp->last->vert)
tbl->opts.rvert = rp->last->vert;
/* If the last line is empty, drop it. */
if (rp->next != NULL &&
rp->next->first == NULL) {
free(rp->next);
rp->next = NULL;
tbl->last_row = rp;
}
}
return;
default: /* Cell. */
break;
}
/*
* If the last line had at least one cell,
* start a new one; otherwise, continue it.
*/
if (rp == NULL) {
if (tbl->last_row == NULL ||
tbl->last_row->first != NULL) {
rp = mandoc_calloc(1, sizeof(*rp));
if (tbl->last_row)
tbl->last_row->next = rp;
else
tbl->first_row = rp;
tbl->last_row = rp;
} else
rp = tbl->last_row;
}
cell(tbl, rp, ln, p, &pos);
}
}
static struct tbl_cell *
cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
{
struct tbl_cell *p, *pp;
p = mandoc_calloc(1, sizeof(*p));
p->spacing = SIZE_MAX;
p->pos = pos;
if ((pp = rp->last) != NULL) {
pp->next = p;
p->col = pp->col + 1;
} else
rp->first = p;
rp->last = p;
if (tbl->opts.cols <= p->col)
tbl->opts.cols = p->col + 1;
return p;
}
