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When using Save to disk/saned to device templates, ignore index and atrtibute errors if the suer incorrectly uses advanced formatting

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Kovid Goyal 2010-01-11 10:46:16 -07:00
parent a10ca7c9b2
commit cbdc4d5e00
1 changed files with 12 additions and 2 deletions
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14
src/calibre/library/save_to_disk.py
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@ -23,7 +23,8 @@ DEFAULT_SEND_TEMPLATE = '{author_sort}/{title} - {authors}'
FORMAT_ARG_DESCS = dict(
title=_('The title'),
authors=_('The authors'),
author_sort=_('The author sort string'),
author_sort=_('The author sort string. To use only the first letter '
'of the name use {author_sort[0]}'),
tags=_('The tags'),
series=_('The series'),
series_index=_('The series number. To get leading zeros use {series_index:0>3s}'),
@ -94,6 +95,15 @@ def preprocess_template(template):
template = template.decode(preferred_encoding, 'replace')
return template
def safe_format(x, format_args):
try:
return x.format(**format_args).strip()
except IndexError: # Thrown if user used [] and index is out of bounds
pass
except AttributeError: # Thrown if user used a non existing attribute
pass
return ''
def get_components(template, mi, id, timefmt='%b %Y', length=250,
sanitize_func=ascii_filename, replace_whitespace=False,
to_lowercase=False):
@ -124,7 +134,7 @@ def get_components(template, mi, id, timefmt='%b %Y', length=250,
format_args['pubdate'] = strftime(timefmt, mi.pubdate.timetuple())
format_args['id'] = str(id)
components = [x.strip() for x in template.split('/') if x.strip()]
components = [x.format(**format_args).strip() for x in components]
components = [safe_format(x, format_args) for x in components]
components = [sanitize_func(x) for x in components if x]
if not components:
components = [str(id)]