def _format_as_string(self, bracketed):
if self.contents == []:
return 'Unpopulated matrix of dimensions (%d, %d)' % (
self.rows, self.cols)
part_strs_list = []
max_widths = [0, 0]
for real in self.contents:
# Fractional part is first, integer part second.
fpart, ipart = math.modf(real)
# Remove negative from fpart and strip the leading zero.
fpart_str = str(abs(fpart))[1:] if fpart != 0 else ''
# Cast to integer to strip off the fractional part of THIS number
# (which is just 0), then format. Probably not the cleanest way,
# but it works. This is done because RPython doesn't suport '%.0f'.
sign_str = '-' if real < 0 else ''
ipart_str = sign_str + str(int(abs(ipart)))
part_strs = [fpart_str, ipart_str]
max_widths = [
max(len(part_strs[i]), max_widths[i]) for i in xrange(2)]
part_strs_list.append(part_strs)
# Tell RPython that these won't, in fact, be negative.
rows = r_uint(self.rows)
cols = r_uint(self.cols)
lines = [
' '.join([
# Fractional part is first, integer part second.
rjust(part_strs[1], max_widths[1]) +
ljust(part_strs[0], max_widths[0])
for part_strs
in part_strs_list[r * cols:(r + 1) * cols]])
for r
in xrange(rows)]
if bracketed:
lines = [' [ %s ]' % line for line in lines]
lines[0] = '[' + lines[0][1:]
lines[-1] = lines[-1] + ']'
else:
lines = [line.rstrip() for line in lines]
return '\n'.join(lines)
def test_width_equal_to_text_size(self):
assert ljust('Just a test', 11) == 'Just a test'
def test_width_smaller_than_text_size(self):
assert ljust('hello there', 5) == 'hello there'
def test_width_larger_than_text_size(self):
assert ljust('abcd', 10) == 'abcd '