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#!/usr/bin/env python
# Copyright (c) 2013, 2014 Yu-Jie Lin
# Licensed under the BSD License, for detailed license information, see COPYING
"""
============
Command-line
============
smartypants
===========
``smartypants`` provides a command-line interface for :py:mod:`smartypants`
module, which is named as same as the module.
It takes input from either standard input or files and output the result to
standard output.
Usage
=====
Syntax::
smartypants [-h] [-v] [-a ATTR] [-s SKIP] [FILE [FILE ...]]
Some examples::
$ smartypants inputfile
$ command-foo inputfile | command-bar | smartypants
Options
=======
``-a``, ``--attr``:
processe attrbutes tells smartypants how to translate,
The attributes is a string of characters, which are taken from the names of
attributes of :py:class:`smartypants.Attr <smartypants._Attr>`.
For example, the default attribute is
:py:attr:`smartypants.Attr.set1 <smartypants._Attr.set1>`::
smartypants -a 1
If you want :py:attr:`smartypants.Attr.q <smartypants._Attr.q>` and
:py:attr:`smartypants.Attr.w <smartypants._Attr.w>` then it would be invoked
as::
smartypants -a qw
``-s``, ``--skip``:
skip specified HTML elements.
It is a comma-separated string. For example::
smartypants -s tag1,tag2,tag3
``FILE``:
files to be processed.
If no ``FILE`` is specified, the input is taken from standard input.
"""
from __future__ import print_function
import argparse
import sys
import warnings
import smartypants
def _str_attr_to_int(str_attr):
"""
Convert str-type attr into int
>>> f = _str_attr_to_int
>>> f('q') == Attr.q
True
>>> f('1') == Attr.set1
True
>>> with warnings.catch_warnings(record=True) as w:
... f('bz')
... len(w)
... print(w[-1].message)
2
1
Unknown attribute: z
"""
attr = 0
for c in str_attr:
if '0' <= c <= '3':
c = 'set' + c
if not hasattr(smartypants.Attr, c):
warnings.warn('Unknown attribute: %s' % c, Warning)
continue
attr |= getattr(smartypants.Attr, c)
return attr
def main():
parser = argparse.ArgumentParser(description=smartypants.__description__)
parser.add_argument('-v', '--version', action='version',
version=smartypants.__version__)
parser.add_argument('-a', '--attr', default='1',
help='processing attributes (Default: %(default)s)')
parser.add_argument('-s', '--skip',
default=','.join(smartypants.tags_to_skip),
help='skip HTML elements (Default: %(default)s)')
parser.add_argument('files', metavar='FILE', type=argparse.FileType('r'),
nargs='*', help='files to be processed ')
args = parser.parse_args()
with warnings.catch_warnings(record=True) as w:
attr = _str_attr_to_int(args.attr)
if len(w):
print(w[-1].message)
sys.exit(1)
smartypants.tags_to_skip = args.skip.split(',')
if args.files:
for f in args.files:
print(smartypants.smartypants(f.read(), attr), end='')
else:
print(smartypants.smartypants(sys.stdin.read(), attr), end='')
if __name__ == '__main__':
main()
|
