-/* $Id: tbl_layout.c,v 1.4 2011/01/01 21:23:01 kristaps Exp $ */
+/* $Id: tbl_layout.c,v 1.22 2011/09/18 14:14:15 schwarze Exp $ */
/*
- * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * Copyright (c) 2009, 2010, 2011 Kristaps Dzonsons <kristaps@bsd.lv>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* 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 <ctype.h>
#include <stdlib.h>
enum tbl_cellt key;
};
+/*
+ * FIXME: we can make this parse a lot nicer by, when an error is
+ * encountered in a layout key, bailing to the next key (i.e. to the
+ * next whitespace then continuing).
+ */
+
#define KEYS_MAX 11
static const struct tbl_phrase keys[KEYS_MAX] = {
{ '|', TBL_CELL_VERT }
};
-static int mods(struct tbl *, struct tbl_cell *,
- int, const char *, int *);
-static int cell(struct tbl *, struct tbl_row *,
- int, const char *, int *);
-static void row(struct tbl *, int, const char *, int *);
+static int mods(struct tbl_node *, struct tbl_cell *,
+ int, const char *, int *);
+static int cell(struct tbl_node *, struct tbl_row *,
+ int, const char *, int *);
+static void row(struct tbl_node *, int, const char *, int *);
+static struct tbl_cell *cell_alloc(struct tbl_node *,
+ struct tbl_row *, enum tbl_cellt);
+static void head_adjust(const struct tbl_cell *,
+ struct tbl_head *);
static int
-mods(struct tbl *tbl, struct tbl_cell *cp,
+mods(struct tbl_node *tbl, struct tbl_cell *cp,
int ln, const char *p, int *pos)
{
char buf[5];
int i;
+ /* Not all types accept modifiers. */
+
+ switch (cp->pos) {
+ case (TBL_CELL_DOWN):
+ /* FALLTHROUGH */
+ case (TBL_CELL_HORIZ):
+ /* FALLTHROUGH */
+ case (TBL_CELL_DHORIZ):
+ /* FALLTHROUGH */
+ case (TBL_CELL_VERT):
+ /* FALLTHROUGH */
+ case (TBL_CELL_DVERT):
+ return(1);
+ default:
+ break;
+ }
+
mod:
/*
* XXX: since, at least for now, modifiers are non-conflicting
break;
}
+ /* Throw away parenthesised expression. */
+
+ if ('(' == p[*pos]) {
+ (*pos)++;
+ while (p[*pos] && ')' != p[*pos])
+ (*pos)++;
+ if (')' == p[*pos]) {
+ (*pos)++;
+ goto mod;
+ }
+ mandoc_msg(MANDOCERR_TBLLAYOUT,
+ tbl->parse, ln, *pos, NULL);
+ return(0);
+ }
+
/* Parse numerical spacing from modifier string. */
if (isdigit((unsigned char)p[*pos])) {
/* No greater than 4 digits. */
if (4 == i) {
- TBL_MSG(tbl, MANDOCERR_TBLLAYOUT, ln, *pos);
+ mandoc_msg(MANDOCERR_TBLLAYOUT, tbl->parse,
+ ln, *pos, NULL);
return(0);
}
*pos += i;
- cp->spacing = atoi(buf);
+ cp->spacing = (size_t)atoi(buf);
goto mod;
/* NOTREACHED */
/* TODO: GNU has many more extensions. */
- switch (tolower(p[(*pos)++])) {
+ switch (tolower((unsigned char)p[(*pos)++])) {
case ('z'):
cp->flags |= TBL_CELL_WIGN;
goto mod;
case ('d'):
cp->flags |= TBL_CELL_BALIGN;
goto mod;
+ case ('w'): /* XXX for now, ignore minimal column width */
+ goto mod;
case ('f'):
break;
+ case ('r'):
+ /* FALLTHROUGH */
case ('b'):
/* FALLTHROUGH */
case ('i'):
(*pos)--;
break;
default:
- TBL_MSG(tbl, MANDOCERR_TBLLAYOUT, ln, *pos - 1);
+ mandoc_msg(MANDOCERR_TBLLAYOUT, tbl->parse,
+ ln, *pos - 1, NULL);
return(0);
}
- switch (tolower(p[(*pos)++])) {
+ switch (tolower((unsigned char)p[(*pos)++])) {
+ case ('3'):
+ /* FALLTHROUGH */
case ('b'):
cp->flags |= TBL_CELL_BOLD;
goto mod;
+ case ('2'):
+ /* FALLTHROUGH */
case ('i'):
cp->flags |= TBL_CELL_ITALIC;
goto mod;
+ case ('1'):
+ /* FALLTHROUGH */
+ case ('r'):
+ goto mod;
default:
break;
}
- TBL_MSG(tbl, MANDOCERR_TBLLAYOUT, ln, *pos - 1);
+ mandoc_msg(MANDOCERR_TBLLAYOUT, tbl->parse,
+ ln, *pos - 1, NULL);
return(0);
}
static int
-cell(struct tbl *tbl, struct tbl_row *rp,
+cell(struct tbl_node *tbl, struct tbl_row *rp,
int ln, const char *p, int *pos)
{
- struct tbl_cell *cp;
int i;
enum tbl_cellt c;
/* Parse the column position (`r', `R', `|', ...). */
for (i = 0; i < KEYS_MAX; i++)
- if (tolower(p[*pos]) == keys[i].name)
+ if (tolower((unsigned char)p[*pos]) == keys[i].name)
break;
if (KEYS_MAX == i) {
- TBL_MSG(tbl, MANDOCERR_TBLLAYOUT, ln, *pos);
+ mandoc_msg(MANDOCERR_TBLLAYOUT, tbl->parse,
+ ln, *pos, NULL);
return(0);
}
- (*pos)++;
c = keys[i].key;
+ /*
+ * If a span cell is found first, raise a warning and abort the
+ * parse. If a span cell is found and the last layout element
+ * isn't a "normal" layout, bail.
+ *
+ * FIXME: recover from this somehow?
+ */
+
+ if (TBL_CELL_SPAN == c) {
+ if (NULL == rp->first) {
+ mandoc_msg(MANDOCERR_TBLLAYOUT, tbl->parse,
+ ln, *pos, NULL);
+ return(0);
+ } else if (rp->last)
+ switch (rp->last->pos) {
+ case (TBL_CELL_VERT):
+ case (TBL_CELL_DVERT):
+ case (TBL_CELL_HORIZ):
+ case (TBL_CELL_DHORIZ):
+ mandoc_msg(MANDOCERR_TBLLAYOUT, tbl->parse,
+ ln, *pos, NULL);
+ return(0);
+ default:
+ break;
+ }
+ }
+
+ /*
+ * If a vertical spanner is found, we may not be in the first
+ * row.
+ */
+
+ if (TBL_CELL_DOWN == c && rp == tbl->first_row) {
+ mandoc_msg(MANDOCERR_TBLLAYOUT, tbl->parse, ln, *pos, NULL);
+ return(0);
+ }
+
+ (*pos)++;
+
/* Extra check for the double-vertical. */
if (TBL_CELL_VERT == c && '|' == p[*pos]) {
if (rp->last && (TBL_CELL_VERT == c || TBL_CELL_DVERT == c) &&
(TBL_CELL_VERT == rp->last->pos ||
TBL_CELL_DVERT == rp->last->pos)) {
- TBL_MSG(tbl, MANDOCERR_TBLLAYOUT, ln, *pos - 1);
+ mandoc_msg(MANDOCERR_TBLLAYOUT, tbl->parse, ln, *pos - 1, NULL);
return(0);
}
/* Allocate cell then parse its modifiers. */
- cp = mandoc_calloc(1, sizeof(struct tbl_cell));
- cp->pos = c;
-
- if (rp->last) {
- rp->last->next = cp;
- rp->last = cp;
- } else
- rp->last = rp->first = cp;
-
- return(mods(tbl, cp, ln, p, pos));
+ return(mods(tbl, cell_alloc(tbl, rp, c), ln, p, pos));
}
static void
-row(struct tbl *tbl, int ln, const char *p, int *pos)
+row(struct tbl_node *tbl, int ln, const char *p, int *pos)
{
struct tbl_row *rp;
if ('.' == p[*pos]) {
tbl->part = TBL_PART_DATA;
if (NULL == tbl->first_row)
- TBL_MSG(tbl, MANDOCERR_TBLNOLAYOUT, ln, *pos);
+ mandoc_msg(MANDOCERR_TBLNOLAYOUT, tbl->parse,
+ ln, *pos, NULL);
(*pos)++;
return;
}
/* NOTREACHED */
}
-
int
-tbl_layout(struct tbl *tbl, int ln, const char *p)
+tbl_layout(struct tbl_node *tbl, int ln, const char *p)
{
int pos;
/* Always succeed. */
return(1);
}
+
+static struct tbl_cell *
+cell_alloc(struct tbl_node *tbl, struct tbl_row *rp, enum tbl_cellt pos)
+{
+ struct tbl_cell *p, *pp;
+ struct tbl_head *h, *hp;
+
+ p = mandoc_calloc(1, sizeof(struct tbl_cell));
+
+ if (NULL != (pp = rp->last)) {
+ rp->last->next = p;
+ rp->last = p;
+ } else
+ rp->last = rp->first = p;
+
+ p->pos = pos;
+
+ /*
+ * This is a little bit complicated. Here we determine the
+ * header the corresponds to a cell. We add headers dynamically
+ * when need be or re-use them, otherwise. As an example, given
+ * the following:
+ *
+ * 1 c || l
+ * 2 | c | l
+ * 3 l l
+ * 3 || c | l |.
+ *
+ * We first add the new headers (as there are none) in (1); then
+ * in (2) we insert the first spanner (as it doesn't match up
+ * with the header); then we re-use the prior data headers,
+ * skipping over the spanners; then we re-use everything and add
+ * a last spanner. Note that VERT headers are made into DVERT
+ * ones.
+ */
+
+ h = pp ? pp->head->next : tbl->first_head;
+
+ if (h) {
+ /* Re-use data header. */
+ if (TBL_HEAD_DATA == h->pos &&
+ (TBL_CELL_VERT != p->pos &&
+ TBL_CELL_DVERT != p->pos)) {
+ p->head = h;
+ return(p);
+ }
+
+ /* Re-use spanner header. */
+ if (TBL_HEAD_DATA != h->pos &&
+ (TBL_CELL_VERT == p->pos ||
+ TBL_CELL_DVERT == p->pos)) {
+ head_adjust(p, h);
+ p->head = h;
+ return(p);
+ }
+
+ /* Right-shift headers with a new spanner. */
+ if (TBL_HEAD_DATA == h->pos &&
+ (TBL_CELL_VERT == p->pos ||
+ TBL_CELL_DVERT == p->pos)) {
+ hp = mandoc_calloc(1, sizeof(struct tbl_head));
+ hp->ident = tbl->opts.cols++;
+ hp->prev = h->prev;
+ if (h->prev)
+ h->prev->next = hp;
+ if (h == tbl->first_head)
+ tbl->first_head = hp;
+ h->prev = hp;
+ hp->next = h;
+ head_adjust(p, hp);
+ p->head = hp;
+ return(p);
+ }
+
+ if (NULL != (h = h->next)) {
+ head_adjust(p, h);
+ p->head = h;
+ return(p);
+ }
+
+ /* Fall through to default case... */
+ }
+
+ hp = mandoc_calloc(1, sizeof(struct tbl_head));
+ hp->ident = tbl->opts.cols++;
+
+ if (tbl->last_head) {
+ hp->prev = tbl->last_head;
+ tbl->last_head->next = hp;
+ tbl->last_head = hp;
+ } else
+ tbl->last_head = tbl->first_head = hp;
+
+ head_adjust(p, hp);
+ p->head = hp;
+ return(p);
+}
+
+static void
+head_adjust(const struct tbl_cell *cellp, struct tbl_head *head)
+{
+ if (TBL_CELL_VERT != cellp->pos &&
+ TBL_CELL_DVERT != cellp->pos) {
+ head->pos = TBL_HEAD_DATA;
+ return;
+ }
+
+ if (TBL_CELL_VERT == cellp->pos)
+ if (TBL_HEAD_DVERT != head->pos)
+ head->pos = TBL_HEAD_VERT;
+
+ if (TBL_CELL_DVERT == cellp->pos)
+ head->pos = TBL_HEAD_DVERT;
+}
+
git.ckatri.com / mandoc.git / blobdiff