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"""Output formatters using prettytable.
"""
import prettytable
from .base import ListFormatter
class TableLister(ListFormatter):
ALIGNMENTS = {
int: 'r',
str: 'l',
unicode: 'l',
float: 'r',
}
def add_argument_group(self, parser):
group = parser.add_argument_group('Table Formatter')
group.add_argument(
'-c', '--column',
action='append',
default=[],
dest='columns',
help='specify the column(s) to include, can be repeated',
)
def emit_list(self, column_names, data, stdout, parsed_args):
x = prettytable.PrettyTable(column_names)
x.set_padding_width(1)
# Figure out the types of the columns in the
# first row and set the alignment of the
# output accordingly.
data_iter = iter(data)
first_row = next(data_iter)
for value, name in zip(first_row, column_names):
alignment = self.ALIGNMENTS.get(type(value), 'l')
x.set_field_align(name, alignment)
# Now iterate over the data and add the rows.
x.add_row(first_row)
for row in data_iter:
x.add_row(row)
formatted = x.get_string(fields=(parsed_args.columns or column_names))
stdout.write(formatted)
stdout.write('\n')
return
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