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# PSELECT - Select records from an ST table of an APPHOT/DAOPHOT text file
# based on the value of a boolean expression.
procedure pselect (infiles, outfiles, expr)
string infiles {prompt="Input apphot/daophot database(s)"}
string outfiles {prompt="Output apphot/daophot database(s)"}
string expr {prompt="Boolean expression for record selection"}
struct *inlist, *outlist
begin
# Local variable declarations.
file tmpin, tmpout
int nin, nout
string in, out, ex, inname, outname
# Cache the istable parameters.
cache ("istable")
# Get the positional parameters.
in = infiles
out = outfiles
ex = expr
# Make temporary names.
tmpin = mktemp ("tmp$")
tmpout = mktemp ("tmp$")
# Expand the file list names.
files (in, sort=no, > tmpin)
files (out, sort=no, > tmpout)
# Compute the lengths of the input and output lists.
inlist = tmpin
for (nin = 0; fscan (inlist, inname) != EOF; nin = nin + 1)
;
inlist = ""
outlist = tmpout
for (nout = 0; fscan (outlist, outname) != EOF; nout = nout + 1)
;
outlist = ""
# Delete the temporary files.
delete (tmpin, ver-, >& "dev$null")
delete (tmpout, ver-, >& "dev$null")
# Quit if the number of input and output files is different.
if (nin != nout) {
print ("ERROR: Input and output file lists are different lengths")
return
}
# Expand the file list names.
files (in, sort=no, > tmpin)
files (out, sort=no, > tmpout)
# Loop over each file in the input and output lists selecting records.
inlist = tmpin
outlist = tmpout
while (fscan (inlist, inname) != EOF && fscan (outlist, outname) !=
EOF) {
istable (inname)
if (istable.table) {
tselect (inname, outname, ex)
} else if (istable.text) {
txselect (inname, outname, ex)
} else {
print ("ERROR: Cannot run PSELECT on file: " // inname)
}
}
delete (tmpin, ver-, >& "dev$null")
delete (tmpout, ver-, >& "dev$null")
inlist = ""
outlist = ""
end
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