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include <mach.h> # for unpacking strings in tbegpt
include "tbtables.h"
# tbegp[tbirds] -- primitive get element
# This procedure reads one element (i.e. row, column) from a table.
# No type conversion is performed, and there is no checking for INDEF
# values. Character strings will be unpacked by tbegpt, however.
#
# Phil Hodge, 15-Sep-1987 Subroutine created.
# Phil Hodge, 31-Mar-1993 Include short datatype.
# Phil Hodge, 13-Sep-1994 In tbegpt, use tbeszt for length of string to read.
procedure tbegpb (tp, cptr, offset, rownum, buffer)
pointer tp # i: pointer to table descriptor
pointer cptr # i: pointer to column descriptor
long offset # i: offset in char to location for reading
int rownum # i: row number
bool buffer # o: buffer to receive value
#--
int read()
errchk seek, read
begin
call seek (TB_FILE(tp), offset)
if (read (TB_FILE(tp), buffer, SZ_BOOL) < SZ_BOOL)
call error (1, "tbegpb: unexpected end of file")
end
procedure tbegpd (tp, cptr, offset, rownum, buffer)
pointer tp # i: pointer to table descriptor
pointer cptr # i: pointer to column descriptor
long offset # i: offset in char to location for reading
int rownum # i: row number
double buffer # o: buffer to receive value
#--
int read()
errchk seek, read
begin
call seek (TB_FILE(tp), offset)
if (read (TB_FILE(tp), buffer, SZ_DOUBLE) < SZ_DOUBLE)
call error (1, "tbegpd: unexpected end of file")
end
procedure tbegpr (tp, cptr, offset, rownum, buffer)
pointer tp # i: pointer to table descriptor
pointer cptr # i: pointer to column descriptor
long offset # i: offset in char to location for reading
int rownum # i: row number
real buffer # o: buffer to receive value
#--
int read()
errchk seek, read
begin
call seek (TB_FILE(tp), offset)
if (read (TB_FILE(tp), buffer, SZ_REAL) < SZ_REAL)
call error (1, "tbegpr: unexpected end of file")
end
procedure tbegpi (tp, cptr, offset, rownum, buffer)
pointer tp # i: pointer to table descriptor
pointer cptr # i: pointer to column descriptor
long offset # i: offset in char to location for reading
int rownum # i: row number
int buffer # o: buffer to receive value
#--
int read()
errchk seek, read
begin
call seek (TB_FILE(tp), offset)
if (read (TB_FILE(tp), buffer, SZ_INT32) < SZ_INT32)
call error (1, "tbegpi: unexpected end of file")
if (SZ_INT != SZ_INT32)
call iupk32 (buffer, buffer, 1)
end
procedure tbegps (tp, cptr, offset, rownum, buffer)
pointer tp # i: pointer to table descriptor
pointer cptr # i: pointer to column descriptor
long offset # i: offset in char to location for reading
int rownum # i: row number
short buffer # o: buffer to receive value
#--
int read()
errchk seek, read
begin
call seek (TB_FILE(tp), offset)
if (read (TB_FILE(tp), buffer, SZ_SHORT) < SZ_SHORT)
call error (1, "tbegps: unexpected end of file")
end
procedure tbegpt (tp, cptr, offset, rownum, buffer, maxch)
pointer tp # i: pointer to table descriptor
pointer cptr # i: pointer to column descriptor
long offset # i: offset in char to location for reading
int rownum # i: row number
char buffer[ARB] # o: buffer to receive value
int maxch # i: max number of char to read
#--
char cbuf[SZ_LINE] # buffer for reading from table
int nchar # number of char to read
int read()
int tbeszt()
errchk seek, read
begin
nchar = min (tbeszt (cptr), SZ_LINE)
call seek (TB_FILE(tp), offset)
if (read (TB_FILE(tp), cbuf, nchar) < nchar)
call error (1, "tbegpt: unexpected end of file")
# It may be that no EOS was read from the entry in the table.
cbuf[nchar+1] = EOS
call strupk (cbuf, buffer, maxch)
end
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