-/* $Id: tbl_data.c,v 1.8 2011/01/02 10:10:57 kristaps Exp $ */
+/* $Id: tbl_data.c,v 1.59 2021/09/10 13:24:38 schwarze Exp $ */
/*
- * Copyright (c) 2009, 2010 Kristaps Dzonsons <kristaps@bsd.lv>
+ * 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
* 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 "libroff.h"
+#include "tbl_int.h"
-static void data(struct tbl_node *, struct tbl_span *,
- int, const char *, int *);
+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 *);
-void
-data(struct tbl_node *tbl, struct tbl_span *dp,
+
+static void
+getdata(struct tbl_node *tbl, struct tbl_span *dp,
int ln, const char *p, int *pos)
{
- struct tbl_dat *dat;
+ struct tbl_dat *dat, *pdat;
struct tbl_cell *cp;
- int sv;
+ 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.
+ */
- cp = NULL;
- if (dp->last && dp->last->layout)
- cp = dp->last->layout->next;
- else if (NULL == dp->last)
- cp = dp->layout->first;
+ startpos = *pos;
+ ccp = p + startpos;
+ while (*ccp != '\0' && *ccp != tbl->opts.tab)
+ if (*ccp++ == '\\')
+ mandoc_escape(&ccp, NULL, NULL);
+ *pos = ccp - p;
- /* Skip over spanners to data formats. */
+ /* Advance to the next layout cell, skipping spanners. */
- while (cp && (TBL_CELL_VERT == cp->pos ||
- TBL_CELL_DVERT == cp->pos))
+ cp = dp->last == NULL ? dp->layout->first : dp->last->layout->next;
+ while (cp != NULL && cp->pos == TBL_CELL_SPAN)
cp = cp->next;
- /* FIXME: warn about losing data contents if cell is HORIZ. */
+ /*
+ * 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_calloc(1, sizeof(struct tbl_dat));
+ 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;
- if (NULL == dat->layout)
- TBL_MSG(tbl, MANDOCERR_TBLEXTRADAT, ln, *pos);
+ /*
+ * 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;
+ }
+ }
+ }
- if (dp->last) {
+ /*
+ * 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;
- } else
- dp->last = dp->first = dat;
+ dp->last = dat;
- sv = *pos;
- while (p[*pos] && p[*pos] != tbl->opts.tab)
- (*pos)++;
+ /* Strip leading and trailing spaces, if requested. */
+
+ endpos = *pos;
+ if (dp->opts->opts & TBL_OPT_NOSPACE) {
+ while (p[startpos] == ' ')
+ startpos++;
+ while (endpos > startpos && p[endpos - 1] == ' ')
+ endpos--;
+ }
+
+ /*
+ * 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 (endpos - startpos == 2 &&
+ p[startpos] == 'T' && p[startpos + 1] == '{') {
+ tbl->part = TBL_PART_CDATA;
+ return;
+ }
- dat->string = mandoc_malloc(*pos - sv + 1);
- memcpy(dat->string, &p[sv], *pos - sv);
- dat->string[*pos - sv] = '\0';
+ dat->string = mandoc_strndup(p + startpos, endpos - startpos);
- if (p[*pos])
+ if (p[*pos] != '\0')
(*pos)++;
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);
}
-int
-tbl_data(struct tbl_node *tbl, int ln, const char *p)
+void
+tbl_cdata(struct tbl_node *tbl, int ln, const char *p, int pos)
{
- struct tbl_span *dp;
- struct tbl_row *rp;
- int pos;
+ struct tbl_dat *dat;
+ size_t sz;
+
+ dat = tbl->last_span->last;
- pos = 0;
+ if (p[pos] == 'T' && p[pos + 1] == '}') {
+ pos += 2;
+ if (tbl->opts.opts & TBL_OPT_NOSPACE)
+ while (p[pos] == ' ')
+ pos++;
+ 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;
+ }
- if ('\0' == p[pos]) {
- TBL_MSG(tbl, MANDOCERR_TBL, ln, pos);
- return(0);
+ /* Fallthrough: T} is part of a word. */
}
- /*
- * 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. This can
- * be NULL!
- */
+ dat->pos = TBL_DATA_DATA;
+ dat->block = 1;
- if (tbl->last_span) {
- assert(tbl->last_span->layout);
- rp = tbl->last_span->layout->next;
- if (NULL == rp)
- rp = tbl->last_span->layout;
+ 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
- rp = tbl->first_row;
+ 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(struct tbl_span));
+ dp = mandoc_calloc(1, sizeof(*dp));
+ dp->line = line;
+ dp->opts = &tbl->opts;
dp->layout = rp;
+ dp->prev = tbl->last_span;
- if (tbl->last_span) {
- tbl->last_span->next = dp;
- tbl->last_span = dp;
+ if (dp->prev == NULL) {
+ tbl->first_span = dp;
+ tbl->current_span = NULL;
} else
- tbl->last_span = tbl->first_span = dp;
-
- if ( ! strcmp(p, "_")) {
- dp->pos = TBL_SPAN_HORIZ;
- return(1);
- } else if ( ! strcmp(p, "=")) {
- dp->pos = TBL_SPAN_DHORIZ;
- return(1);
+ 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;
+ }
}
- dp->pos = TBL_SPAN_DATA;
+ /*
+ * 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;
+ }
- while ('\0' != p[pos])
- data(tbl, dp, ln, p, &pos);
+ /* Process a real data row. */
- return(1);
+ sp = newspan(tbl, ln, rp);
+ sp->pos = TBL_SPAN_DATA;
+ while (p[pos] != '\0')
+ getdata(tbl, sp, ln, p, &pos);
}
git.ckatri.com / mandoc.git / blobdiff