3 \fL@sdZddlZddddddgZd ZGd ddZdd dZdd dZddZejdej Z ejdej Z ddZ dddZ edkree ddS)zText wrapping and filling. N TextWrapperwrapfilldedentindentshortenz c @seZdZdZiZedZxeD]Zeeee<qWdZ dZ de j eZ de ddZe jd e e e ed e jZ[ [ [e jd e Z[ e jd Zd&dddddZddZddZddZddZddZd d!Zd"d#Zd$d%ZdS)'ra Object for wrapping/filling text. The public interface consists of the wrap() and fill() methods; the other methods are just there for subclasses to override in order to tweak the default behaviour. If you want to completely replace the main wrapping algorithm, you'll probably have to override _wrap_chunks(). Several instance attributes control various aspects of wrapping: width (default: 70) the maximum width of wrapped lines (unless break_long_words is false) initial_indent (default: "") string that will be prepended to the first line of wrapped output. Counts towards the line's width. subsequent_indent (default: "") string that will be prepended to all lines save the first of wrapped output; also counts towards each line's width. expand_tabs (default: true) Expand tabs in input text to spaces before further processing. Each tab will become 0 .. 'tabsize' spaces, depending on its position in its line. If false, each tab is treated as a single character. tabsize (default: 8) Expand tabs in input text to 0 .. 'tabsize' spaces, unless 'expand_tabs' is false. replace_whitespace (default: true) Replace all whitespace characters in the input text by spaces after tab expansion. Note that if expand_tabs is false and replace_whitespace is true, every tab will be converted to a single space! fix_sentence_endings (default: false) Ensure that sentence-ending punctuation is always followed by two spaces. Off by default because the algorithm is (unavoidably) imperfect. 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'. break_on_hyphens (default: true) Allow breaking hyphenated words. If true, wrapping will occur preferably on whitespaces and right after hyphens part of compound words. drop_whitespace (default: true) Drop leading and trailing whitespace from lines. max_lines (default: None) Truncate wrapped lines. placeholder (default: ' [...]') Append to the last line of truncated text.  z [\w!"\'&.,?]z[^\d\W]z[%s]z[^Na ( # any whitespace %(ws)s+ | # em-dash between words (?<=%(wp)s) -{2,} (?=\w) | # word, possibly hyphenated %(nws)s+? (?: # hyphenated word -(?: (?<=%(lt)s{2}-) | (?<=%(lt)s-%(lt)s-)) (?= %(lt)s -? %(lt)s) | # end of word (?=%(ws)s|\Z) | # em-dash (?<=%(wp)s) (?=-{2,}\w) ) ))ZwpltZwsZnwsz(%s+)z[a-z][\.\!\?][\"\']?\ZFTFz [...]) max_lines placeholderc  CsL||_||_||_||_||_||_||_||_| |_| |_ | |_ | |_ dS)N) widthinitial_indentsubsequent_indent expand_tabsreplace_whitespacefix_sentence_endingsbreak_long_wordsdrop_whitespacebreak_on_hyphenstabsizerr) selfrrrrrrrrrrrrr /usr/lib64/python3.6/textwrap.py__init__sszTextWrapper.__init__cCs(|jr|j|j}|jr$|j|j}|S)z_munge_whitespace(text : string) -> string Munge whitespace in text: expand tabs and convert all other whitespace characters to spaces. Eg. " foo\tbar\n\nbaz" becomes " foo bar baz". )r expandtabsrr translateunicode_whitespace_trans)rtextrrr_munge_whitespaces   zTextWrapper._munge_whitespacecCs6|jdkr|jj|}n |jj|}dd|D}|S)aN_split(text : string) -> [string] Split the text to wrap into indivisible chunks. Chunks are not quite the same as words; see _wrap_chunks() for full details. As an example, the text Look, goof-ball -- use the -b option! breaks into the following chunks: 'Look,', ' ', 'goof-', 'ball', ' ', '--', ' ', 'use', ' ', 'the', ' ', '-b', ' ', 'option!' if break_on_hyphens is True, or in: 'Look,', ' ', 'goof-ball', ' ', '--', ' ', 'use', ' ', 'the', ' ', '-b', ' ', option!' otherwise. TcSsg|] }|r|qSrr).0crrr sz&TextWrapper._split..)r wordsep_resplitwordsep_simple_re)rr!chunksrrr_splits   zTextWrapper._splitcCs`d}|jj}xN|t|dkrZ||ddkrP|||rPd||d<|d7}q|d7}qWdS)ag_fix_sentence_endings(chunks : [string]) Correct for sentence endings buried in 'chunks'. Eg. when the original text contains "... foo.\nBar ...", munge_whitespace() and split() will convert that to [..., "foo.", " ", "Bar", ...] which has one too few spaces; this method simply changes the one space to two. rr rz N)sentence_end_researchlen)rr)iZ patsearchrrr_fix_sentence_endingss   z!TextWrapper._fix_sentence_endingscCs^|dkrd}n||}|jrH|j|dd||d|d|d<n|sZ|j|jdS)a _handle_long_word(chunks : [string], cur_line : [string], cur_len : int, width : int) Handle a chunk of text (most likely a word, not whitespace) that is too long to fit in any line. r Nr1r1)rappendpop)rZreversed_chunkscur_linecur_lenrZ space_leftrrr_handle_long_words zTextWrapper._handle_long_wordc Csg}|jdkrtd|j|jdk rb|jdkr8|j}n|j}t|t|jj|jkrbtd|jx&|rg}d}|r|j}n|j}|jt|}|j r|dj dkr|r|d=x:|rt|d }|||kr|j |j ||7}qPqW|r.t|d |kr.|j ||||ttt|}|j rd|rd|d j dkrd|t|d 8}|d =|rn|jdkst|d|jks| s|j rt|dkr|dj r||kr|j |dj|qnx|r<|dj r"|t|j|kr"|j |j|j |dj|P|t|d8}|d=qW|rz|dj}t|t|j|jkrz||j|d<P|j ||jjPqnW|S)a_wrap_chunks(chunks : [string]) -> [string] Wrap a sequence of text chunks and return a list of lines of length 'self.width' or less. (If 'break_long_words' is false, some lines may be longer than this.) Chunks correspond roughly to words and the whitespace between them: each chunk is indivisible (modulo 'break_long_words'), but a line break can come between any two chunks. Chunks should not have internal whitespace; ie. a chunk is either all whitespace or a "word". Whitespace chunks will be removed from the beginning and end of lines, but apart from that whitespace is preserved. rzinvalid width %r (must be > 0)Nr z#placeholder too large for max widthr r1r1r1r1r1r1r1r1r1r1r1r1)r ValueErrorrrrr.rlstripreverserstripr2r3r6summapjoinrstrip) rr)linesrr4r5rlZ prev_linerrr _wrap_chunkssp              zTextWrapper._wrap_chunkscCs|j|}|j|S)N)r"r*)rr!rrr _split_chunksPs zTextWrapper._split_chunkscCs$|j|}|jr|j||j|S)a^wrap(text : string) -> [string] Reformat the single paragraph in 'text' so it fits in lines of no more than 'self.width' columns, and return a list of wrapped lines. Tabs in 'text' are expanded with string.expandtabs(), and all other whitespace characters (including newline) are converted to space. )rBrr0rA)rr!r)rrrrVs  zTextWrapper.wrapcCsdj|j|S)zfill(text : string) -> string Reformat the single paragraph in 'text' to fit in lines of no more than 'self.width' columns, and return a new string containing the entire wrapped paragraph.  )r=r)rr!rrrrdszTextWrapper.fill) r r r TTFTTTr )__name__ __module__ __qualname____doc__r ordZuspace _whitespacexZ word_punctZletterreescapeZ whitespaceZ nowhitespacecompileVERBOSEr&r(r,rr"r*r0r6rArBrrrrrrrsJ/   !gr cKstfd|i|}|j|S)aWrap a single paragraph of text, returning a list of wrapped lines. Reformat the single paragraph in 'text' so it fits in lines of no more than 'width' columns, and return a list of wrapped lines. By default, tabs in 'text' are expanded with string.expandtabs(), and all other whitespace characters (including newline) are converted to space. See TextWrapper class for available keyword args to customize wrapping behaviour. r)rr)r!rkwargswrrrrps cKstfd|i|}|j|S)aFill a single paragraph of text, returning a new string. Reformat the single paragraph in 'text' to fit in lines of no more than 'width' columns, and return a new string containing the entire wrapped paragraph. As with wrap(), tabs are expanded and other whitespace characters converted to space. See TextWrapper class for available keyword args to customize wrapping behaviour. r)rr)r!rrOrPrrrr}s cKs,tf|dd|}|jdj|jjS)aCollapse and truncate the given text to fit in the given width. The text first has its whitespace collapsed. If it then fits in the *width*, it is returned as is. Otherwise, as many words as possible are joined and then the placeholder is appended:: >>> textwrap.shorten("Hello world!", width=12) 'Hello world!' >>> textwrap.shorten("Hello world!", width=11) 'Hello [...]' r )rrr)rrr=r:r')r!rrOrPrrrrs z^[ ]+$z(^[ ]*)(?:[^ ])cCsd}tjd|}tj|}x||D]t}|dkr2|}q |j|r>q |j|rN|}q xDtt||D]"\}\}}||kr^|d|}Pq^W|dt|}q Wdr|rx2|jdD]$}| s|j|st d||fqW|rt jd|d|}|S)a:Remove any common leading whitespace from every line in `text`. This can be used to make triple-quoted strings line up with the left edge of the display, while still presenting them in the source code in indented form. Note that tabs and spaces are both treated as whitespace, but they are not equal: the lines " hello" and "\thello" are considered to have no common leading whitespace. (This behaviour is new in Python 2.5; older versions of this module incorrectly expanded tabs before searching for common leading whitespace.) Nr rrCzline = %r, margin = %rz(?m)^) _whitespace_only_resub_leading_whitespace_refindall startswith enumeratezipr.r'AssertionErrorrK)r!Zmarginindentsrr/rJylinerrrrs,      cs,dkrddfdd}dj|S)aFAdds 'prefix' to the beginning of selected lines in 'text'. If 'predicate' is provided, 'prefix' will only be added to the lines where 'predicate(line)' is True. If 'predicate' is not provided, it will default to adding 'prefix' to all non-empty lines that do not consist solely of whitespace characters. NcSs|jS)N)r:)r[rrr predicateszindent..predicatec3s.x(jdD]}|r |n|Vq WdS)NT) splitlines)r[)r\prefixr!rrprefixed_linesszindent..prefixed_linesr )r=)r!r^r\r_r)r\r^r!rrs__main__z Hello there. This is indented.)r )r )N)rGrK__all__rIrrrrrM MULTILINErQrSrrrDprintrrrrsa 5