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Patch #1581073: add a flag to textwrap that prevents the dropping of

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whitespace while wrapping.
This commit is contained in:
Georg Brandl 2007-03-13 18:15:41 +00:00
parent 92a6baed7b
commit 9e6b47002a
4 changed files with 26 additions and 4 deletions
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12
Lib/textwrap.py
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@ -63,6 +63,8 @@ class TextWrapper:
break_long_words (default: true)
Break words longer than 'width'. If false, those words will not
be broken, and some lines might be longer than 'width'.
drop_whitespace (default: true)
Drop leading and trailing whitespace from lines.
"""
whitespace_trans = string.maketrans(_whitespace, ' ' * len(_whitespace))
@ -98,7 +100,8 @@ class TextWrapper:
expand_tabs=True,
replace_whitespace=True,
fix_sentence_endings=False,
break_long_words=True):
break_long_words=True,
drop_whitespace=True):
self.width = width
self.initial_indent = initial_indent
self.subsequent_indent = subsequent_indent
@ -106,6 +109,7 @@ class TextWrapper:
self.replace_whitespace = replace_whitespace
self.fix_sentence_endings = fix_sentence_endings
self.break_long_words = break_long_words
self.drop_whitespace = drop_whitespace
# -- Private methods -----------------------------------------------
@ -140,7 +144,7 @@ class TextWrapper:
'use', ' ', 'the', ' ', '-b', ' ', 'option!'
"""
chunks = self.wordsep_re.split(text)
chunks = filter(None, chunks)
chunks = filter(None, chunks) # remove empty chunks
return chunks
def _fix_sentence_endings(self, chunks):
@ -228,7 +232,7 @@ class TextWrapper:
# First chunk on line is whitespace -- drop it, unless this
# is the very beginning of the text (ie. no lines started yet).
if chunks[-1].strip() == '' and lines:
if self.drop_whitespace and chunks[-1].strip() == '' and lines:
del chunks[-1]
while chunks:
@ -249,7 +253,7 @@ class TextWrapper:
self._handle_long_word(chunks, cur_line, cur_len, width)
# If the last chunk on this line is all whitespace, drop it.
if cur_line and cur_line[-1].strip() == '':
if self.drop_whitespace and cur_line and cur_line[-1].strip() == '':
del cur_line[-1]
# Convert current line back to a string and store it in list