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include <tbset.h>
include "tbtables.h"
include "tbltext.h"
# tbzopn -- read an existing text file into memory
#
# Phil Hodge, 14-Jan-1992 Subroutine created.
# Phil Hodge, 6-Dec-1992 Pass line to tbzmem for possible error message.
# Phil hodge, 7-Jun-1994 Pass Memc[fmt_code] to tbzmem.
# Phil Hodge, 10-Aug-1994 Update COL_LEN.
# Phil Hodge, 3-Apr-1995 Use tbcfpt instead of tbcfmt.
# Phil Hodge, 26-Dec-1995 Errchk tbtwer.
# Phil Hodge, 30-Apr-1996 Remove call to tbtwer.
# Phil Hodge, 14-Apr-1998 Use strcpy instead of tbcftp for print format.
# Phil Hodge, 21-Apr-1999 Increase the maximum line length from 1024 to 4096.
# Phil Hodge, 7-Jun-1999 Rewrite, checking for text table subtype.
# Phil Hodge, 29-Mar-2001 Assign a value to TB_ROWLEN and TB_COLUSED.
procedure tbzopn (tp)
pointer tp # i: pointer to table descriptor
#--
pointer sp
pointer buf # buffer for input line
int line # counter for line number in input file
int line_type # type of line read by tbzlin
int subtype # text table subtype
int col
int rowlen
pointer cp # pointer to column descriptor
pointer tbcnum()
errchk tbzsub, tbzrds, tbzrdx
begin
call smark (sp)
call salloc (buf, SZ_TEXTBUF, TY_CHAR)
line = 0 # incremented later
# Allocate space for the list of keywords.
if (TB_MAXPAR(tp) <= 0)
TB_MAXPAR(tp) = INCR_N_KEYWORDS
call calloc (TB_KEYLIST_PTR(tp), TB_MAXPAR(tp), TY_POINTER)
# Allocate space for the comment buffer.
call malloc (TB_COMMENT(tp), SZ_TEXTBUF, TY_CHAR)
TB_SZ_COMMENT(tp) = SZ_TEXTBUF
Memc[TB_COMMENT(tp)] = EOS
# Determine the subtype of this text table.
call tbzsub (tp, Memc[buf], SZ_TEXTBUF, line, line_type, subtype)
TB_SUBTYPE(tp) = subtype
# Read the file into memory.
if (TB_SUBTYPE(tp) == TBL_SUBTYPE_SIMPLE)
call tbzrds (tp, Memc[buf], line, line_type)
else if (TB_SUBTYPE(tp) == TBL_SUBTYPE_EXPLICIT)
call tbzrdx (tp, Memc[buf], line, line_type)
# Compute row length (but not used, except for tbpsta).
rowlen = 0
do col = 1, TB_NCOLS(tp) {
cp = tbcnum (tp, col)
rowlen = rowlen + COL_LEN(cp)
}
TB_ROWLEN(tp) = rowlen
TB_COLUSED(tp) = rowlen
call sfree (sp)
end
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