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include <tbset.h>
# MOV_ELEM -- Move an element in one row from one table to another
#
# B.Simon 15-Jan-99 Original
# B.Simon 27-Jan-99 Renamed
procedure mov_elem (rtp, rcp, rrow, wtp, wcp, wrow)
pointer rtp # i: Table descriptor of table read from
pointer rcp # i: Column descriptor of column read from
int rrow # i: Row number of table read from
pointer wtp # i: Table descriptor of table written to
pointer wcp # i: Column descriptor of column written to
int wrow # i: Row number of table written to
#--
int type, nelem, sz_elem, nlen
pointer sp, buf
int tbcigi(), tbagtb(), tbagtt(), tbagti(), tbagtr(), tbagtd(), tbagts()
begin
# First, get the type and number of elements in the column
nelem = tbcigi (rcp, TBL_COL_LENDATA)
type = tbcigi (rcp, TBL_COL_DATATYPE)
if (type < 0) {
sz_elem = - type
type = TY_CHAR
} else {
sz_elem = 0
}
# Allocate buffer to hold values passed between tables
call smark (sp)
call salloc (buf, nelem*(sz_elem+1), type)
# Copy the values according to their actual type
if (nelem == 1) {
# Do not copy null scalar values
switch (type) {
case TY_BOOL:
call tbegtb (rtp, rcp, rrow, Memb[buf])
call tbeptb (wtp, wcp, wrow, Memb[buf])
case TY_CHAR:
call tbegtt (rtp, rcp, rrow, Memc[buf], sz_elem)
if (Memc[buf] != EOS)
call tbeptt (wtp, wcp, wrow, Memc[buf])
case TY_SHORT:
call tbegts (rtp, rcp, rrow, Mems[buf])
if (! IS_INDEFS (Mems[buf]))
call tbepts (wtp, wcp, wrow, Mems[buf])
case TY_INT, TY_LONG:
call tbegti (rtp, rcp, rrow, Memi[buf])
if (! IS_INDEFI (Memi[buf]))
call tbepti (wtp, wcp, wrow, Memi[buf])
case TY_REAL:
call tbegtr (rtp, rcp, rrow, Memr[buf])
if (! IS_INDEFR (Memr[buf]))
call tbeptr (wtp, wcp, wrow, Memr[buf])
case TY_DOUBLE:
call tbegtd (rtp, rcp, rrow, Memd[buf])
if (! IS_INDEFD (Memd[buf]))
call tbeptd (wtp, wcp, wrow, Memd[buf])
}
} else {
# Don't copy zero length arrays
switch (type) {
case TY_BOOL:
nlen = tbagtb (rtp, rcp, rrow, Memb[buf], 1, nelem)
call tbaptb (wtp, wcp, wrow, Memb[buf], 1, nlen)
case TY_CHAR:
nlen = tbagtt (rtp, rcp, rrow, Memc[buf], sz_elem, 1, nelem)
if (Memc[buf] != EOS)
call tbaptt (wtp, wcp, wrow, Memc[buf], sz_elem, 1, nlen)
case TY_SHORT:
nlen = tbagts (rtp, rcp, rrow, Mems[buf], 1, nelem)
if (! IS_INDEFS (Mems[buf]))
call tbapts (wtp, wcp, wrow, Mems[buf], 1, nlen)
case TY_INT, TY_LONG:
nlen = tbagti (rtp, rcp, rrow, Memi[buf], 1, nelem)
if (! IS_INDEFI (Memi[buf]))
call tbapti (wtp, wcp, wrow, Memi[buf], 1, nlen)
case TY_REAL:
nlen = tbagtr (rtp, rcp, rrow, Memr[buf], 1, nelem)
if (! IS_INDEFR (Memr[buf]))
call tbaptr (wtp, wcp, wrow, Memr[buf], 1, nlen)
case TY_DOUBLE:
nlen = tbagtd (rtp, rcp, rrow, Memd[buf], 1, nelem)
if (! IS_INDEFD (Memd[buf]))
call tbaptd (wtp, wcp, wrow, Memd[buf], 1, nlen)
}
}
call sfree (sp)
end
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