_ @sdZddlZddlZddlZddlmZddlmZddlmZddlm Z ddlm Z dd lm Z dd lm Z dd lm Z dd lmZdd lmZddlmZddlmZejdZeedZdZeddeDZddedDZeeddddddgZGdddeZeGd d!d!eZGd"d#d#eZ eeiZ!d$d%d&Z"d'd(Z#d$d)d*Z$dd+d,d-Z%d.d/d0d$d1d2Z&e&Z'e&d3d4d5d6Z(d7d8Z)d.d/d0d$d9d:Z*d.d/d$d;d<Z+d=d>Z,d.d?d$d@dAZ-d.d?dBdCZ.d.dDdEZ/d$j0dFdedGDZ1dHdIZ2ej3dJe2d.dJdKdLZ4dMZ5d.d/dNdOdPZ6d.dNd+d?dQddRdSZ7d.dNd+d?dQdddNdTdUZ8dVdWZ9d.dNdNddXdYdZZ:dd.dNdNddXd[d\Z;d+d]d^Z<Gd_d`d`e=Z>dS)aa werkzeug.urls ~~~~~~~~~~~~~ ``werkzeug.urls`` used to provide several wrapper functions for Python 2 urlparse, whose main purpose were to work around the behavior of the Py2 stdlib and its lack of unicode support. While this was already a somewhat inconvenient situation, it got even more complicated because Python 3's ``urllib.parse`` actually does handle unicode properly. In other words, this module would wrap two libraries with completely different behavior. 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The charset is only being used for the path, query and fragment. r)rrrrrFr!r"r#)r&r{r|rrrrps  zBytesURL.decodeN) rlrmrnrorprdrergrirvryrrrrrrz`s   rzrCc s>t|tr|jd}ttr<jdttt|jd}tt|d}yt}Wn9t k rfddt j D}ts z%_unquote_to_bytes..rO%)r,r r frozenset bytearrayiterr^next _unquote_mapsKeyError _hextobyteitemsappendextendbytes)stringrgroupsresultZ hex_to_bytegroupcoder)rr_unquote_to_bytess(    rccsddlm}||}|r4t|d|}x|D]|\}}|dkrVq;t|tszt|j|}t|tst|j|}t|dt|Vq;WdS)Nr)iter_multi_itemskey=)datastructuresrsortedr,rr r_fast_url_quote_plus)objr{ encode_keyssortrriterablevaluerrr_url_encode_impls  rcCsOy t|ddddd|SWn(tk rJt|ddd|SYnXdS)Nr{zutf-8r|rwrlatin1)rWr-)rrrrrr6s  r6Tc sSt|t|t}|dkr3d}d}}}|jd}|dkrtjt|d|ddr||dd}| stfdd |Dr|d|j|}}|dd d krt |} xAd D]3} |j| d } | dkrt | | } qW|d | || d}}d |krd|ksd|krd |krt d|rd|kr|j dd\}}d|kr+|j dd\}}|r7t nt} | |||||S)aParses a URL from a string into a :class:`URL` tuple. If the URL is lacking a scheme it can be provided as second argument. Otherwise, it is ignored. Optionally fragments can be stripped from the URL by setting `allow_fragments` to `False`. The inverse of this function is :func:`url_unparse`. :param url: the URL to parse. :param scheme: the default schema to use if the URL is schemaless. :param allow_fragments: if set to `False` a fragment will be removed from the URL. NrCrDrr|r(rc3s!|]}|dkVqdS) 0123456789Nr)rc)srrrszurl_parse..rOz//z/?#rtruzInvalid IPv6 URL#?)rr,r rh _scheme_rematchr anylowerr_minr0r^rrrz) urlrallow_fragmentsZ is_text_basedr r"r#irkdelimrwdelimZ result_typer)rrr>s4   1&  !$$ r>zutf-8rwz/:csttr!j||t|trB|j||}tttBtt|fddtdDtsfdd}nfdd}|S)aPrecompile the translation table for a URL encoding function. Unlike :func:`url_quote`, the generated function only takes the string to quote. :param charset: The charset to encode the result with. :param errors: How to handle encoding errors. :param safe: An optional sequence of safe characters to never encode. :param unsafe: An optional sequence of unsafe characters to always encode. cs2g|](}|kr$t|nd|qS)z%%%02X)chr)rr)saferrrs z(_make_fast_url_quote..rcs djfdd|DS)NrCcsg|]}|qSrr)rr)tablerrrs z7_make_fast_url_quote..quote..)r@)r)rrrquotesz#_make_fast_url_quote..quotecs&djfddt|DS)NrCcsg|]}|qSrr)rr)rrrrs z7_make_fast_url_quote..quote..)r@r)r)rrrrs)r,r rrr _always_saferanger)r{r|rrrr)rrr_make_fast_url_quotes &rr r+cCst|jddS)Nrr)_fast_quote_plusr()rrrrr srcCs t|tttfs$t|}t|trE|j||}t|trf|j||}t|tr|j||}tt|tBtt|}t}xAt|D]3}||kr|j|q|jt |qWt t|S)aDURL encode a single string with a given encoding. :param s: the string to quote. :param charset: the charset to be used. :param safe: an optional sequence of safe characters. :param unsafe: an optional sequence of unsafe characters. .. versionadded:: 0.9.2 The `unsafe` parameter was added. ) r,r rrrrrrr _bytetohexr )rr{r|rrr.rrrrrxs  &  rxcCs&t||||ddjddS)zURL encode a single string with the given encoding and convert whitespace to "+". :param s: The string to quote. :param charset: The charset to be used. :param safe: An optional sequence of safe characters. rr)rxr()rr{r|rrrrurl_quote_plus-srcCs t|\}}}}}t|}|d}|sT|r|j|dr|r|dd|dkr|d|}|d|p|d|}n|r||7}|r||d|}|r||d|}|r||d|}|S) zThe reverse operation to :meth:`url_parse`. This accepts arbitrary as well as :class:`URL` tuples and returns a URL as a string. :param components: the parsed URL as tuple which should be converted into a URL string. rCrNNrz//rDrr)rrrf) componentsrr r!r"r#rrrrrrA8s   !"# rAr(cCs1t||}|dk r-|j||}|S)aURL decode a single string with a given encoding. If the charset is set to `None` no unicode decoding is performed and raw bytes are returned. :param s: the string to unquote. :param charset: the charset of the query string. If set to `None` no unicode decoding will take place. :param errors: the error handling for the charset decoding. N)rr)rr{r|rr.rrrrWVs  rWcCsFt|tr$|jdd}n|jdd}t|||S)aURL decode a single string with the given `charset` and decode "+" to whitespace. Per default encoding errors are ignored. If you want a different behavior you can set `errors` to ``'replace'`` or ``'strict'``. In strict mode a :exc:`HTTPUnicodeError` is raised. :param s: The string to unquote. :param charset: the charset of the query string. If set to `None` no unicode decoding will take place. :param errors: The error handling for the `charset` decoding. rr+ )r,r r(rW)rr{r|rrrurl_unquote_plusfs rcCst||djdd}|jdrm|ddjrm|dddkrmd |dd }t|}t|j|d d }t|j|d d}t|j |d d}t t |j |j |||fS)aSometimes you get an URL by a user that just isn't a real URL because it contains unsafe characters like ' ' and so on. This function can fix some of the problems in a similar way browsers handle data entered by the user: >>> url_fix(u'http://de.wikipedia.org/wiki/Elf (Begriffskl\xe4rung)') 'http://de.wikipedia.org/wiki/Elf%20(Begriffskl%C3%A4rung)' :param s: the string with the URL to fix. :param charset: The target charset for the URL if the url was given as unicode string. r(rQrNzfile:// :/|/zfile:///Nrz /%+$!*'(),z :&%=+$!*'(),)rr)r r(rfrZr>rxr!rr"r#r rArry)rr{rr!qsanchorrrrurl_fixzs; rcCs(g|]}|tkrt|qSr)rr)rrrrrrs cCsAt|j|j|j}tr4|jd}||jfS)zRUsed in :func:`uri_to_iri` after unquoting to re-quote any invalid bytes. zutf-8)_fast_url_quoteobjectstartendrr)eoutrrr_codec_error_url_quotesrzwerkzeug.url_quotecCst|trt|}tt||}t|j||t}t|j||t}t|j ||t}t|j |j |||fS)aConvert a URI to an IRI. All valid UTF-8 characters are unquoted, leaving all reserved and invalid characters quoted. If the URL has a domain, it is decoded from Punycode. >>> uri_to_iri("http://xn--n3h.net/p%C3%A5th?q=%C3%A8ry%DF") 'http://\u2603.net/p\xe5th?q=\xe8ry%DF' :param uri: The URI to convert. :param charset: The encoding to encode unquoted bytes with. :param errors: Error handler to use during ``bytes.encode``. By default, invalid bytes are left quoted. .. versionchanged:: 0.15 All reserved and invalid characters remain quoted. Previously, only some reserved characters were preserved, and invalid bytes were replaced instead of left quoted. .. versionadded:: 0.6 ) r,tuplerAr>r rWr!_to_iri_unsafer"r#rrF)urir{r|r!r"r#rrrrIs rIz:/?#[]@!$&'()*+,;=%Fc Cst|trt|}|rqy;t|}|jd}t|jdkr[|SWntk rpYnXtt |||}t |j ||t }t |j ||t }t |j||t }tt|j|j|||fS)aConvert an IRI to a URI. All non-ASCII and unsafe characters are quoted. If the URL has a domain, it is encoded to Punycode. >>> iri_to_uri('http://\u2603.net/p\xe5th?q=\xe8ry%DF') 'http://xn--n3h.net/p%C3%A5th?q=%C3%A8ry%DF' :param iri: The IRI to convert. :param charset: The encoding of the IRI. :param errors: Error handler to use during ``bytes.encode``. :param safe_conversion: Return the URL unchanged if it only contains ASCII characters and no whitespace. See the explanation below. There is a general problem with IRI conversion with some protocols that are in violation of the URI specification. Consider the following two IRIs:: magnet:?xt=uri:whatever itms-services://?action=download-manifest After parsing, we don't know if the scheme requires the ``//``, which is dropped if empty, but conveys different meanings in the final URL if it's present or not. In this case, you can use ``safe_conversion``, which will return the URL unchanged if it only contains ASCII characters and no whitespace. This can result in a URI with unquoted characters if it was not already quoted correctly, but preserves the URL's semantics. Werkzeug uses this for the ``Location`` header for redirects. .. versionchanged:: 0.15 All reserved characters remain unquoted. Previously, only some reserved characters were left unquoted. .. versionchanged:: 0.9.6 The ``safe_conversion`` parameter was added. .. versionadded:: 0.6 rr)r,rrAr rr_r^r-r>r rxr! _to_uri_safer"r#rry) Zirir{r|Zsafe_conversionZ native_iriZ ascii_irir!r"r#rrrrGs &   rG&cCs|dkr"ddlm}|}t|trYt|t rY|j|pPd}n4t|trt|t r|j|pd}|t|j|||||S)a Parse a querystring and return it as :class:`MultiDict`. There is a difference in key decoding on different Python versions. On Python 3 keys will always be fully decoded whereas on Python 2, keys will remain bytestrings if they fit into ASCII. On 2.x keys can be forced to be unicode by setting `decode_keys` to `True`. If the charset is set to `None` no unicode decoding will happen and raw bytes will be returned. Per default a missing value for a key will default to an empty key. If you don't want that behavior you can set `include_empty` to `False`. Per default encoding errors are ignored. If you want a different behavior you can set `errors` to ``'replace'`` or ``'strict'``. In strict mode a `HTTPUnicodeError` is raised. .. versionchanged:: 0.5 In previous versions ";" and "&" could be used for url decoding. This changed in 0.5 where only "&" is supported. If you want to use ";" instead a different `separator` can be provided. The `cls` parameter was added. :param s: a string with the query string to decode. :param charset: the charset of the query string. If set to `None` no unicode decoding will take place. :param decode_keys: Used on Python 2.x to control whether keys should be forced to be unicode objects. If set to `True` then keys will be unicode in all cases. Otherwise, they remain `str` if they fit into ASCII. :param include_empty: Set to `False` if you don't want empty values to appear in the dict. :param errors: the decoding error behavior. :param separator: the pair separator to be used, defaults to ``&`` :param cls: an optional dict class to use. If this is not specified or `None` the default :class:`MultiDict` is used. Nr) MultiDictr) rrr,r rrr_url_decode_implr^)rr{ decode_keys include_emptyr| separatorclsrrrrr; s/ r;c Cspddlm} | |||} t| ||||} |rD| S|dkrfddlm} | }|| S)aWorks like :func:`url_decode` but decodes a stream. The behavior of stream and limit follows functions like :func:`~werkzeug.wsgi.make_line_iter`. The generator of pairs is directly fed to the `cls` so you can consume the data while it's parsed. .. versionadded:: 0.8 :param stream: a stream with the encoded querystring :param charset: the charset of the query string. If set to `None` no unicode decoding will take place. :param decode_keys: Used on Python 2.x to control whether keys should be forced to be unicode objects. If set to `True`, keys will be unicode in all cases. Otherwise, they remain `str` if they fit into ASCII. :param include_empty: Set to `False` if you don't want empty values to appear in the dict. :param errors: the decoding error behavior. :param separator: the pair separator to be used, defaults to ``&`` :param cls: an optional dict class to use. If this is not specified or `None` the default :class:`MultiDict` is used. :param limit: the content length of the URL data. Not necessary if a limited stream is provided. :param return_iterator: if set to `True` the `cls` argument is ignored and an iterator over all decoded pairs is returned r)make_chunk_iterN)r)Zwsgirrrr) streamr{rrr|rrlimitZreturn_iteratorr pair_iterdecoderrrrrurl_decode_streamJs& rc csx|D]}|sqt|}|d}||krU|j|d\}} n|s^q|}|d} t|||}|dk rtr| rt|}|t| ||fVqWdS)NrrrC)rr^rrr ) rr{rrr|pairrequalrrrrrrs      r&cCs.t|d}|jt|||||S)aURL encode a dict/`MultiDict`. If a value is `None` it will not appear in the result string. Per default only values are encoded into the target charset strings. If `encode_keys` is set to ``True`` unicode keys are supported too. If `sort` is set to `True` the items are sorted by `key` or the default sorting algorithm. .. versionadded:: 0.5 `sort`, `key`, and `separator` were added. :param obj: the object to encode into a query string. :param charset: the charset of the query string. :param encode_keys: set to `True` if you have unicode keys. (Ignored on Python 3.x) :param sort: set to `True` if you want parameters to be sorted by `key`. :param separator: the separator to be used for the pairs. :param key: an optional function to be used for sorting. For more details check out the :func:`sorted` documentation. r)r r@r)rr{rrrrrrr url_encodesrc Csxt|d}t|||||}|dkr7|Sx:t|D],\}} |rc|j||j| qDWdS)aLike :meth:`url_encode` but writes the results to a stream object. If the stream is `None` a generator over all encoded pairs is returned. .. versionadded:: 0.8 :param obj: the object to encode into a query string. :param stream: a stream to write the encoded object into or `None` if an iterator over the encoded pairs should be returned. In that case the separator argument is ignored. :param charset: the charset of the query string. :param encode_keys: set to `True` if you have unicode keys. (Ignored on Python 3.x) :param sort: set to `True` if you want parameters to be sorted by `key`. :param separator: the separator to be used for the pairs. :param key: an optional function to be used for sorting. For more details check out the :func:`sorted` documentation. rN)r r enumeratewrite) rrr{rrrrgenrjchunkrrrurl_encode_streams  rcst|trt|}t|tr6t|}t||f\}}t||sd|S|sn|St|d|\}}}}}t|||\}} } } } ||kr|S| rt|| | | | fS|} | dddkr| jd} n\| sC|jd} | su|} n2|jddd | jd} | d dkrd| d <fdd| D} xd}t| d}xm||kr;| |d kr.| |ddd fkr.| |d|d=P|d7}qWPqWdd g}x!| dd |kr|| d=q\Wdj| } t|| | | | fS)a Join a base URL and a possibly relative URL to form an absolute interpretation of the latter. :param base: the base URL for the join operation. :param url: the URL to join. :param allow_fragments: indicates whether fragments should be allowed. rNrrN.rCcs(g|]}|dkr|qS)rr)rZsegment)rrrrs zurl_join..z..rOrr) r,rrArrr>r^r_r@)baserrbschemebnetlocbpathbquery bfragmentrr r!r"r#segmentsrnZunwanted_markerr)rrr?sT   !  2< r?c@sFeZdZdZddddddZdd Zd d ZdS) HrefaImplements a callable that constructs URLs with the given base. The function can be called with any number of positional and keyword arguments which than are used to assemble the URL. Works with URLs and posix paths. Positional arguments are appended as individual segments to the path of the URL: >>> href = Href('/foo') >>> href('bar', 23) '/foo/bar/23' >>> href('foo', bar=23) '/foo/foo?bar=23' If any of the arguments (positional or keyword) evaluates to `None` it will be skipped. If no keyword arguments are given the last argument can be a :class:`dict` or :class:`MultiDict` (or any other dict subclass), otherwise the keyword arguments are used for the query parameters, cutting off the first trailing underscore of the parameter name: >>> href(is_=42) '/foo?is=42' >>> href({'foo': 'bar'}) '/foo?foo=bar' Combining of both methods is not allowed: >>> href({'foo': 'bar'}, bar=42) Traceback (most recent call last): ... TypeError: keyword arguments and query-dicts can't be combined Accessing attributes on the href object creates a new href object with the attribute name as prefix: >>> bar_href = href.bar >>> bar_href("blub") '/foo/bar/blub' If `sort` is set to `True` the items are sorted by `key` or the default sorting algorithm: >>> href = Href("/", sort=True) >>> href(a=1, b=2, c=3) '/?a=1&b=2&c=3' .. versionadded:: 0.5 `sort` and `key` were added. z./zutf-8FNcCs4|s d}||_||_||_||_dS)Nz./)rr{rr)r&rr{rrrrr__init__Is    z Href.__init__cCsp|dddkr"t||j}|dddkrK|d7}tt|||j|j|jS)NrO__rrNr)AttributeErrorrrr?r{rr)r&rYrrrr __getattr__Qs    zHref.__getattr__c s|rIt|d trI|r+td|d |dd}}n%|rntdd|jD}djfdd|Djd}j}|r|jds|d7}t|d|}|r|dt t |j d j d j d 7}t|S)Nrz3keyword arguments and query-dicts can't be combinedcSsAg|]7\}}|jdr1|ddp4||fqS)_Nrr)endswith)rkvrrrr`s z!Href.__call__..rNcs7g|]-}|dk rtt|jdqS)Nr)r rxr{)rx)r&rrrds z./rrrrrrr)r,dictr1rr@r]rrr?r rr{rrr )r&r!r"r.r)r&r__call__Ys(      ,z Href.__call__)rlrmrnrorrrrrrrrs 1 r)?rocodecsrXre collectionsr_compatrrrrrr r r r Z _internalr rcompilerrrrrrrrrrr$rrrzrrrr6r>rrrrrxrrArWrrr@rrregister_errorrIrrGr;rrrrr?rrrrrrs    ! 1 1!   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