hi,
i have spotted a small misfunctioning of textread.cc
when reading empty files.
$ rm -f test.txt;touch test.txt
$ octave -q
octave:1> [a,b]=textread("test.txt","%f %f")
a = [](0x0)
error: element number 2 undefined in return list
error: evaluating assignment expression near line 1, column 6
it would be more appropriate to have no error issued and get an
empty b.
I don't have a patch as I don't understand the code completely. I guess
a fix needs to be applied to the final loop below. insert an empty
value when cl or ml is zero?
dim_vector dim(1, nr_rows);
for (unsigned int i = 0; i < input.columns.size(); i++) {
long unsigned int cl = cell_output[i].length();
long unsigned int ml = matrix_output[i].length();
if ((cl == 0) && (ml == 0)) {
continue;
}
else if (cl == 0) {
matrix_output[i].resize(1, nr_rows);
retval.append(octave_value(matrix_output[i].transpose()));
} else {
cell_output[i].resize(dim);
retval.append(octave_value(cell_output[i].transpose()));
}
}
cheers, eric
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