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csvlook.py
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/
csvlook.py
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#!/usr/bin/env python
from csvkit import CSVKitReader
from csvkit.cli import CSVKitUtility
class CSVLook(CSVKitUtility):
description = 'Render a CSV file in the console as a fixed-width table.'
override_flags = 'l'
def add_arguments(self):
pass
def main(self):
rows = CSVKitReader(self.args.file, **self.reader_kwargs)
rows = list(rows)
widths = []
for row in rows:
for i, v in enumerate(row):
try:
if len(v) > widths[i]:
widths[i] = len(v)
except IndexError:
widths.append(len(v))
# Dashes span each width with '+' character at intersection of
# horizontal and vertical dividers.
divider = '|--' + '-+-'.join('-'* w for w in widths) + '--|'
self.output_file.write('%s\n' % divider)
for i, row in enumerate(rows):
output = []
for j, d in enumerate(row):
if d is None:
d = ''
output.append(' %s ' % unicode(d).ljust(widths[j]))
self.output_file.write(('| %s |\n' % ('|'.join(output))).encode('utf-8'))
if (i == 0 and not self.args.no_header_row) or i == len(rows) - 1:
self.output_file.write('%s\n' % divider)
def launch_new_instance():
utility = CSVLook()
utility.main()
if __name__ == "__main__":
launch_new_instance()