U h @stddlZddlZddlZddlZddlmZddlmZddlm Z e dZ GdddeZ dd Z dd d ZdS)N)MutableMapping)cached_property) url_to_fszfsspec.mappingc@seZdZdZd%ddZeddZdd Zd&d d Zd dZ ddZ ddZ ddZ d'ddZ d(ddZddZddZddZdd Zd!d"Zd#d$ZdS))FSMapaWrap a FileSystem instance as a mutable wrapping. The keys of the mapping become files under the given root, and the values (which must be bytes) the contents of those files. Parameters ---------- root: string prefix for all the files fs: FileSystem instance check: bool (=True) performs a touch at the location, to check for write access. Examples -------- >>> fs = FileSystem(**parameters) # doctest: +SKIP >>> d = FSMap('my-data/path/', fs) # doctest: +SKIP or, more likely >>> d = fs.get_mapper('my-data/path/') >>> d['loc1'] = b'Hello World' # doctest: +SKIP >>> list(d.keys()) # doctest: +SKIP ['loc1'] >>> d['loc1'] # doctest: +SKIP b'Hello World' FNcCs||_|||_|t|ddd|_|dkr@tttf}||_ ||_ ||_ |rn|j |sn|j ||r|j |std|d|j|d|j|ddS)NxzPath z9 does not exist. Create with the ``create=True`` keywordz/a)fsZ_strip_protocolroot posixpathjoin_root_key_to_strFileNotFoundErrorIsADirectoryErrorNotADirectoryErrormissing_exceptionscheckcreateexistsmkdir ValueErrortouchrm)selfr rrrrr@/var/www/html/venv/lib/python3.8/site-packages/fsspec/mapping.py__init__)s*     zFSMap.__init__cCsddlm}||j|jdS)z@dirfs instance that can be used with the same keys as the mapper) DirFileSystem)pathr)Zimplementations.dirfsrr r)rrrrrdirfsBs z FSMap.dirfscCsBtd|jz"|j|jd|j|jWn YnXdS)z0Remove all keys below root - empties out mappingzClear mapping at %sTN)loggerinfor rrrrrrrclearIs z FSMap.clearraisec sfdd|D}dkrnd}z*jj||dttrJ|diWn*jk rv}z t|W5d}~XYnXfdd Dfd d t||DS) aFetch multiple items from the store If the backend is async-able, this might proceed concurrently Parameters ---------- keys: list(str) They keys to be fetched on_error : "raise", "omit", "return" If raise, an underlying exception will be raised (converted to KeyError if the type is in self.missing_exceptions); if omit, keys with exception will simply not be included in the output; if "return", all keys are included in the output, but the value will be bytes or an exception instance. Returns ------- dict(key, bytes|exception) csg|]}|qSr _key_to_str.0kr"rr fsz"FSMap.getitems..r$return)on_errorrNcs(i|] \}}|t|jr tn|qSr) isinstancerKeyErrorr(r)vr"rr nsz"FSMap.getitems..csHi|]@\}}dks"t|ts|dkr4|n|t|qS)r+r$)r- BaseExceptiongetr.)r(keyZk2)r,outrrr1rs )rcatr-bytesrr.itemszip)rkeysr,keys2Zoeer)r,r5rrgetitemsRs   zFSMap.getitemscs&fdd|D}j|dS)zSet the values of multiple items in the store Parameters ---------- values_dict: dict(str, bytes) cs i|]\}}|t|qSr)r& maybe_convertr/r"rrr1sz"FSMap.setitems..N)r8rpipe)rZ values_dictvaluesrr"rsetitemsxszFSMap.setitemscsjfdd|DdS)z#Remove multiple keys from the storecsg|]}|qSrr%r'r"rrr*sz"FSMap.delitems..N)rr)rr:rr"rdelitemsszFSMap.delitemscCsDt|ts0tdtt|tr(t|}t|}|j|dS)zGenerate full path for the keyzAfrom fsspec 2023.5 onward FSMap non-str keys will raise TypeError/) r-strwarningswarnDeprecationWarninglisttupler rstrip)rr4rrrr&s  zFSMap._key_to_strcCs|t|jddS)zStrip path of to leave key nameNrC)lenr lstrip)rsrrr _str_to_keyszFSMap._str_to_keyc Csb||}z|j|}WnB|jk r\}z"|dk rB|WYSt||W5d}~XYnX|S)z Retrieve dataN)r&rr6rr.)rr4defaultr)resultexcrrr __getitem__s  zFSMap.__getitem__cCs0|||}z ||=Wntk r*YnX|S)zPop data)rRr.)rr4rOrPrrrpops   z FSMap.popcCs8||}|jj|j|dd|j|t|dS)zStore value in keyT)exist_okN)r&rZmkdirsZ_parentZ pipe_filer>)rr4valuerrr __setitem__s zFSMap.__setitem__csfddjjDS)Nc3s|]}|VqdSN)rN)r(rr"rr sz!FSMap.__iter__..)rfindr r"rr"r__iter__szFSMap.__iter__cCst|j|jSrW)rKrrYr r"rrr__len__sz FSMap.__len__c CsDz|j||Wn(tk r>}z t|W5d}~XYnXdS)z Remove keyN)rrr& Exceptionr.)rr4rQrrr __delitem__szFSMap.__delitem__cCs||}|j|S)zDoes key exist in mapping?)r&risfile)rr4rrrr __contains__s zFSMap.__contains__cCst|j|jdd|jffS)NF)rr rrr"rrr __reduce__szFSMap.__reduce__)FFN)r$)N)N)__name__ __module__ __qualname____doc__rrrr#r=rArBr&rNrRrSrVrZr[r]r_r`rrrrr s$   &   rcCsFt|tjst|drBt|dr6|jjdkr6|d}tt|}|S)NZ __array__dtypeZMmZint64)r-arrayhasattrrekindviewr7 memoryview)rUrrrr>s   r>Fc Ks2t|f|\}}|dk r|n|}t|||||dS)aCreate key-value interface for given URL and options The URL will be of the form "protocol://location" and point to the root of the mapper required. All keys will be file-names below this location, and their values the contents of each key. Also accepts compound URLs like zip::s3://bucket/file.zip , see ``fsspec.open``. Parameters ---------- url: str Root URL of mapping check: bool Whether to attempt to read from the location before instantiation, to check that the mapping does exist create: bool Whether to make the directory corresponding to the root before instantiating missing_exceptions: None or tuple If given, these exception types will be regarded as missing keys and return KeyError when trying to read data. By default, you get (FileNotFoundError, IsADirectoryError, NotADirectoryError) alternate_root: None or str In cases of complex URLs, the parser may fail to pick the correct part for the mapper root, so this arg can override Returns ------- ``FSMap`` instance, the dict-like key-value store. N)r)rr) urlrrrZalternate_rootkwargsrZurlpathr rrr get_mappers'rn)rkFFNN)rfloggingr rEcollections.abcr functoolsrZ fsspec.corer getLoggerr rr>rnrrrrs     ;