Make width calculations occur within tbl_term.c, not tbl.c. This allows

for front-ends to make decisions about widths, not the back-end.

To pull this off, first make each tbl_head contain a unique index value
(0 <= index < total tbl_head elements) and remove the tbl_calc() routine
from the back-end.

Then, when encountering the first tbl_span in the front-end, dynamically
create an array of configurations (termp_tbl) keyed on each tbl_head's
unique index value.  Construct the decimals and widths at this time,
then continue parsing as before.

The termp_tbl and indexes are required because we pass a const tbl AST
into the front-end.

1 files changed, 7 insertions, 1 deletions

diff --git a/term.h b/term.h
index 4922cdab..de6bbbaf 100644
--- a/term.h
+++ b/term.h
@@ -71,9 +71,15 @@ struct	termp_ps {
 	size_t		  pdfobjsz;	/* size of pdfobjs */
 };
 
+struct	termp_tbl {
+	int		  width;	/* width in fixed chars */
+	int		  decimal;	/* decimal point position */
+};
+
 struct	termp {
 	enum termtype	  type;
-	size_t		  defrmargin;	/* Right margin of the device.. */
+	struct termp_tbl *tbl;		/* table configuration */
+	size_t		  defrmargin;	/* Right margin of the device. */
 	size_t		  rmargin;	/* Current right margin. */
 	size_t		  maxrmargin;	/* Max right margin. */
 	size_t		  maxcols;	/* Max size of buf. */