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See <http://github.com/ActiveState/appdirs> for details and usage. """ # Dev Notes: # - MSDN on where to store app data files: # http://support.microsoft.com/default.aspx?scid=kb;en-us;310294#XSLTH3194121123120121120120 # - Mac OS X: http://developer.apple.com/documentation/MacOSX/Conceptual/BPFileSystem/index.html # - XDG spec for Un*x: http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html __version_info__ = (1, 4, 3) __version__ = '.'.join(map(str, __version_info__)) import sys import os PY3 = sys.version_info[0] == 3 if PY3: unicode = str if sys.platform.startswith('java'): import platform os_name = platform.java_ver()[3][0] if os_name.startswith('Windows'): # "Windows XP", "Windows 7", etc. system = 'win32' elif os_name.startswith('Mac'): # "Mac OS X", etc. system = 'darwin' else: # "Linux", "SunOS", "FreeBSD", etc. # Setting this to "linux2" is not ideal, but only Windows or Mac # are actually checked for and the rest of the module expects # *sys.platform* style strings. system = 'linux2' else: system = sys.platform def user_data_dir(appname=None, appauthor=None, version=None, roaming=False): r"""Return full path to the user-specific data dir for this application. "appname" is the name of application. If None, just the system directory is returned. "appauthor" (only used on Windows) is the name of the appauthor or distributing body for this application. Typically it is the owning company name. This falls back to appname. You may pass False to disable it. "version" is an optional version path element to append to the path. You might want to use this if you want multiple versions of your app to be able to run independently. If used, this would typically be "<major>.<minor>". Only applied when appname is present. "roaming" (boolean, default False) can be set True to use the Windows roaming appdata directory. That means that for users on a Windows network setup for roaming profiles, this user data will be sync'd on login. See <http://technet.microsoft.com/en-us/library/cc766489(WS.10).aspx> for a discussion of issues. Typical user data directories are: Mac OS X: ~/Library/Application Support/<AppName> Unix: ~/.local/share/<AppName> # or in $XDG_DATA_HOME, if defined Win XP (not roaming): C:\Documents and Settings\<username>\Application Data\<AppAuthor>\<AppName> Win XP (roaming): C:\Documents and Settings\<username>\Local Settings\Application Data\<AppAuthor>\<AppName> Win 7 (not roaming): C:\Users\<username>\AppData\Local\<AppAuthor>\<AppName> Win 7 (roaming): C:\Users\<username>\AppData\Roaming\<AppAuthor>\<AppName> For Unix, we follow the XDG spec and support $XDG_DATA_HOME. That means, by default "~/.local/share/<AppName>". """ if system == "win32": if appauthor is None: appauthor = appname const = roaming and "CSIDL_APPDATA" or "CSIDL_LOCAL_APPDATA" path = os.path.normpath(_get_win_folder(const)) if appname: if appauthor is not False: path = os.path.join(path, appauthor, appname) else: path = os.path.join(path, appname) elif system == 'darwin': path = os.path.expanduser('~/Library/Application Support/') if appname: path = os.path.join(path, appname) else: path = os.getenv('XDG_DATA_HOME', os.path.expanduser("~/.local/share")) if appname: path = os.path.join(path, appname) if appname and version: path = os.path.join(path, version) return path def site_data_dir(appname=None, appauthor=None, version=None, multipath=False): r"""Return full path to the user-shared data dir for this application. "appname" is the name of application. If None, just the system directory is returned. "appauthor" (only used on Windows) is the name of the appauthor or distributing body for this application. Typically it is the owning company name. This falls back to appname. You may pass False to disable it. "version" is an optional version path element to append to the path. You might want to use this if you want multiple versions of your app to be able to run independently. If used, this would typically be "<major>.<minor>". Only applied when appname is present. "multipath" is an optional parameter only applicable to *nix which indicates that the entire list of data dirs should be returned. By default, the first item from XDG_DATA_DIRS is returned, or '/usr/local/share/<AppName>', if XDG_DATA_DIRS is not set Typical site data directories are: Mac OS X: /Library/Application Support/<AppName> Unix: /usr/local/share/<AppName> or /usr/share/<AppName> Win XP: C:\Documents and Settings\All Users\Application Data\<AppAuthor>\<AppName> Vista: (Fail! "C:\ProgramData" is a hidden *system* directory on Vista.) Win 7: C:\ProgramData\<AppAuthor>\<AppName> # Hidden, but writeable on Win 7. For Unix, this is using the $XDG_DATA_DIRS[0] default. WARNING: Do not use this on Windows. See the Vista-Fail note above for why. """ if system == "win32": if appauthor is None: appauthor = appname path = os.path.normpath(_get_win_folder("CSIDL_COMMON_APPDATA")) if appname: if appauthor is not False: path = os.path.join(path, appauthor, appname) else: path = os.path.join(path, appname) elif system == 'darwin': path = os.path.expanduser('/Library/Application Support') if appname: path = os.path.join(path, appname) else: # XDG default for $XDG_DATA_DIRS # only first, if multipath is False path = os.getenv('XDG_DATA_DIRS', os.pathsep.join(['/usr/local/share', '/usr/share'])) pathlist = [os.path.expanduser(x.rstrip(os.sep)) for x in path.split(os.pathsep)] if appname: if version: appname = os.path.join(appname, version) pathlist = [os.sep.join([x, appname]) for x in pathlist] if multipath: path = os.pathsep.join(pathlist) else: path = pathlist[0] return path if appname and version: path = os.path.join(path, version) return path def user_config_dir(appname=None, appauthor=None, version=None, roaming=False): r"""Return full path to the user-specific config dir for this application. "appname" is the name of application. If None, just the system directory is returned. "appauthor" (only used on Windows) is the name of the appauthor or distributing body for this application. Typically it is the owning company name. This falls back to appname. You may pass False to disable it. "version" is an optional version path element to append to the path. You might want to use this if you want multiple versions of your app to be able to run independently. If used, this would typically be "<major>.<minor>". Only applied when appname is present. "roaming" (boolean, default False) can be set True to use the Windows roaming appdata directory. That means that for users on a Windows network setup for roaming profiles, this user data will be sync'd on login. See <http://technet.microsoft.com/en-us/library/cc766489(WS.10).aspx> for a discussion of issues. Typical user config directories are: Mac OS X: same as user_data_dir Unix: ~/.config/<AppName> # or in $XDG_CONFIG_HOME, if defined Win *: same as user_data_dir For Unix, we follow the XDG spec and support $XDG_CONFIG_HOME. That means, by default "~/.config/<AppName>". """ if system in ["win32", "darwin"]: path = user_data_dir(appname, appauthor, None, roaming) else: path = os.getenv('XDG_CONFIG_HOME', os.path.expanduser("~/.config")) if appname: path = os.path.join(path, appname) if appname and version: path = os.path.join(path, version) return path def site_config_dir(appname=None, appauthor=None, version=None, multipath=False): r"""Return full path to the user-shared data dir for this application. "appname" is the name of application. If None, just the system directory is returned. "appauthor" (only used on Windows) is the name of the appauthor or distributing body for this application. Typically it is the owning company name. This falls back to appname. You may pass False to disable it. "version" is an optional version path element to append to the path. You might want to use this if you want multiple versions of your app to be able to run independently. If used, this would typically be "<major>.<minor>". Only applied when appname is present. "multipath" is an optional parameter only applicable to *nix which indicates that the entire list of config dirs should be returned. By default, the first item from XDG_CONFIG_DIRS is returned, or '/etc/xdg/<AppName>', if XDG_CONFIG_DIRS is not set Typical site config directories are: Mac OS X: same as site_data_dir Unix: /etc/xdg/<AppName> or $XDG_CONFIG_DIRS[i]/<AppName> for each value in $XDG_CONFIG_DIRS Win *: same as site_data_dir Vista: (Fail! "C:\ProgramData" is a hidden *system* directory on Vista.) For Unix, this is using the $XDG_CONFIG_DIRS[0] default, if multipath=False WARNING: Do not use this on Windows. See the Vista-Fail note above for why. """ if system in ["win32", "darwin"]: path = site_data_dir(appname, appauthor) if appname and version: path = os.path.join(path, version) else: # XDG default for $XDG_CONFIG_DIRS # only first, if multipath is False path = os.getenv('XDG_CONFIG_DIRS', '/etc/xdg') pathlist = [os.path.expanduser(x.rstrip(os.sep)) for x in path.split(os.pathsep)] if appname: if version: appname = os.path.join(appname, version) pathlist = [os.sep.join([x, appname]) for x in pathlist] if multipath: path = os.pathsep.join(pathlist) else: path = pathlist[0] return path def user_cache_dir(appname=None, appauthor=None, version=None, opinion=True): r"""Return full path to the user-specific cache dir for this application. "appname" is the name of application. If None, just the system directory is returned. "appauthor" (only used on Windows) is the name of the appauthor or distributing body for this application. Typically it is the owning company name. This falls back to appname. You may pass False to disable it. "version" is an optional version path element to append to the path. You might want to use this if you want multiple versions of your app to be able to run independently. If used, this would typically be "<major>.<minor>". Only applied when appname is present. "opinion" (boolean) can be False to disable the appending of "Cache" to the base app data dir for Windows. See discussion below. Typical user cache directories are: Mac OS X: ~/Library/Caches/<AppName> Unix: ~/.cache/<AppName> (XDG default) Win XP: C:\Documents and Settings\<username>\Local Settings\Application Data\<AppAuthor>\<AppName>\Cache Vista: C:\Users\<username>\AppData\Local\<AppAuthor>\<AppName>\Cache On Windows the only suggestion in the MSDN docs is that local settings go in the `CSIDL_LOCAL_APPDATA` directory. This is identical to the non-roaming app data dir (the default returned by `user_data_dir` above). Apps typically put cache data somewhere *under* the given dir here. Some examples: ...\Mozilla\Firefox\Profiles\<ProfileName>\Cache ...\Acme\SuperApp\Cache\1.0 OPINION: This function appends "Cache" to the `CSIDL_LOCAL_APPDATA` value. This can be disabled with the `opinion=False` option. """ if system == "win32": if appauthor is None: appauthor = appname path = os.path.normpath(_get_win_folder("CSIDL_LOCAL_APPDATA")) if appname: if appauthor is not False: path = os.path.join(path, appauthor, appname) else: path = os.path.join(path, appname) if opinion: path = os.path.join(path, "Cache") elif system == 'darwin': path = os.path.expanduser('~/Library/Caches') if appname: path = os.path.join(path, appname) else: path = os.getenv('XDG_CACHE_HOME', os.path.expanduser('~/.cache')) if appname: path = os.path.join(path, appname) if appname and version: path = os.path.join(path, version) return path def user_state_dir(appname=None, appauthor=None, version=None, roaming=False): r"""Return full path to the user-specific state dir for this application. "appname" is the name of application. If None, just the system directory is returned. "appauthor" (only used on Windows) is the name of the appauthor or distributing body for this application. Typically it is the owning company name. This falls back to appname. You may pass False to disable it. "version" is an optional version path element to append to the path. You might want to use this if you want multiple versions of your app to be able to run independently. If used, this would typically be "<major>.<minor>". Only applied when appname is present. "roaming" (boolean, default False) can be set True to use the Windows roaming appdata directory. That means that for users on a Windows network setup for roaming profiles, this user data will be sync'd on login. See <http://technet.microsoft.com/en-us/library/cc766489(WS.10).aspx> for a discussion of issues. Typical user state directories are: Mac OS X: same as user_data_dir Unix: ~/.local/state/<AppName> # or in $XDG_STATE_HOME, if defined Win *: same as user_data_dir For Unix, we follow this Debian proposal <https://wiki.debian.org/XDGBaseDirectorySpecification#state> to extend the XDG spec and support $XDG_STATE_HOME. That means, by default "~/.local/state/<AppName>". """ if system in ["win32", "darwin"]: path = user_data_dir(appname, appauthor, None, roaming) else: path = os.getenv('XDG_STATE_HOME', os.path.expanduser("~/.local/state")) if appname: path = os.path.join(path, appname) if appname and version: path = os.path.join(path, version) return path def user_log_dir(appname=None, appauthor=None, version=None, opinion=True): r"""Return full path to the user-specific log dir for this application. "appname" is the name of application. If None, just the system directory is returned. "appauthor" (only used on Windows) is the name of the appauthor or distributing body for this application. Typically it is the owning company name. This falls back to appname. You may pass False to disable it. "version" is an optional version path element to append to the path. You might want to use this if you want multiple versions of your app to be able to run independently. If used, this would typically be "<major>.<minor>". Only applied when appname is present. "opinion" (boolean) can be False to disable the appending of "Logs" to the base app data dir for Windows, and "log" to the base cache dir for Unix. See discussion below. Typical user log directories are: Mac OS X: ~/Library/Logs/<AppName> Unix: ~/.cache/<AppName>/log # or under $XDG_CACHE_HOME if defined Win XP: C:\Documents and Settings\<username>\Local Settings\Application Data\<AppAuthor>\<AppName>\Logs Vista: C:\Users\<username>\AppData\Local\<AppAuthor>\<AppName>\Logs On Windows the only suggestion in the MSDN docs is that local settings go in the `CSIDL_LOCAL_APPDATA` directory. (Note: I'm interested in examples of what some windows apps use for a logs dir.) OPINION: This function appends "Logs" to the `CSIDL_LOCAL_APPDATA` value for Windows and appends "log" to the user cache dir for Unix. This can be disabled with the `opinion=False` option. """ if system == "darwin": path = os.path.join( os.path.expanduser('~/Library/Logs'), appname) elif system == "win32": path = user_data_dir(appname, appauthor, version) version = False if opinion: path = os.path.join(path, "Logs") else: path = user_cache_dir(appname, appauthor, version) version = False if opinion: path = os.path.join(path, "log") if appname and version: path = os.path.join(path, version) return path class AppDirs(object): """Convenience wrapper for getting application dirs.""" def __init__(self, appname=None, appauthor=None, version=None, roaming=False, multipath=False): self.appname = appname self.appauthor = appauthor self.version = version self.roaming = roaming self.multipath = multipath @property def user_data_dir(self): return user_data_dir(self.appname, self.appauthor, version=self.version, roaming=self.roaming) @property def site_data_dir(self): return site_data_dir(self.appname, self.appauthor, version=self.version, multipath=self.multipath) @property def user_config_dir(self): return user_config_dir(self.appname, self.appauthor, version=self.version, roaming=self.roaming) @property def site_config_dir(self): return site_config_dir(self.appname, self.appauthor, version=self.version, multipath=self.multipath) @property def user_cache_dir(self): return user_cache_dir(self.appname, self.appauthor, version=self.version) @property def user_state_dir(self): return user_state_dir(self.appname, self.appauthor, version=self.version) @property def user_log_dir(self): return user_log_dir(self.appname, self.appauthor, version=self.version) #---- internal support stuff def _get_win_folder_from_registry(csidl_name): """This is a fallback technique at best. I'm not sure if using the registry for this guarantees us the correct answer for all CSIDL_* names. """ if PY3: import winreg as _winreg else: import _winreg shell_folder_name = { "CSIDL_APPDATA": "AppData", "CSIDL_COMMON_APPDATA": "Common AppData", "CSIDL_LOCAL_APPDATA": "Local AppData", }[csidl_name] key = _winreg.OpenKey( _winreg.HKEY_CURRENT_USER, r"Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders" ) dir, type = _winreg.QueryValueEx(key, shell_folder_name) return dir def _get_win_folder_with_pywin32(csidl_name): from win32com.shell import shellcon, shell dir = shell.SHGetFolderPath(0, getattr(shellcon, csidl_name), 0, 0) # Try to make this a unicode path because SHGetFolderPath does # not return unicode strings when there is unicode data in the # path. try: dir = unicode(dir) # Downgrade to short path name if have highbit chars. See # <http://bugs.activestate.com/show_bug.cgi?id=85099>. has_high_char = False for c in dir: if ord(c) > 255: has_high_char = True break if has_high_char: try: import win32api dir = win32api.GetShortPathName(dir) except ImportError: pass except UnicodeError: pass return dir def _get_win_folder_with_ctypes(csidl_name): import ctypes csidl_const = { "CSIDL_APPDATA": 26, "CSIDL_COMMON_APPDATA": 35, "CSIDL_LOCAL_APPDATA": 28, }[csidl_name] buf = ctypes.create_unicode_buffer(1024) ctypes.windll.shell32.SHGetFolderPathW(None, csidl_const, None, 0, buf) # Downgrade to short path name if have highbit chars. See # <http://bugs.activestate.com/show_bug.cgi?id=85099>. has_high_char = False for c in buf: if ord(c) > 255: has_high_char = True break if has_high_char: buf2 = ctypes.create_unicode_buffer(1024) if ctypes.windll.kernel32.GetShortPathNameW(buf.value, buf2, 1024): buf = buf2 return buf.value def _get_win_folder_with_jna(csidl_name): import array from com.sun import jna from com.sun.jna.platform import win32 buf_size = win32.WinDef.MAX_PATH * 2 buf = array.zeros('c', buf_size) shell = win32.Shell32.INSTANCE shell.SHGetFolderPath(None, getattr(win32.ShlObj, csidl_name), None, win32.ShlObj.SHGFP_TYPE_CURRENT, buf) dir = jna.Native.toString(buf.tostring()).rstrip("\0") # Downgrade to short path name if have highbit chars. See # <http://bugs.activestate.com/show_bug.cgi?id=85099>. has_high_char = False for c in dir: if ord(c) > 255: has_high_char = True break if has_high_char: buf = array.zeros('c', buf_size) kernel = win32.Kernel32.INSTANCE if kernel.GetShortPathName(dir, buf, buf_size): dir = jna.Native.toString(buf.tostring()).rstrip("\0") return dir if system == "win32": try: from ctypes import windll _get_win_folder = _get_win_folder_with_ctypes except ImportError: try: import com.sun.jna _get_win_folder = _get_win_folder_with_jna except ImportError: _get_win_folder = _get_win_folder_from_registry #---- self test code if __name__ == "__main__": appname = "MyApp" appauthor = "MyCompany" props = ("user_data_dir", "user_config_dir", "user_cache_dir", "user_state_dir", "user_log_dir", "site_data_dir", "site_config_dir") print("-- app dirs %s --" % __version__) print("-- app dirs (with optional 'version')") dirs = AppDirs(appname, appauthor, version="1.0") for prop in props: print("%s: %s" % (prop, getattr(dirs, prop))) print("\n-- app dirs (without optional 'version')") dirs = AppDirs(appname, appauthor) for prop in props: print("%s: %s" % (prop, getattr(dirs, prop))) print("\n-- app dirs (without optional 'appauthor')") dirs = AppDirs(appname) for prop in props: print("%s: %s" % (prop, getattr(dirs, prop))) print("\n-- app dirs (with disabled 'appauthor')") dirs = AppDirs(appname, appauthor=False) for prop in props: print("%s: %s" % (prop, getattr(dirs, prop))) """ The cache object API for implementing caches. The default is a thread safe in-memory dictionary. """ from threading import Lock class BaseCache(object): def get(self, key): raise NotImplementedError() def set(self, key, value): raise NotImplementedError() def delete(self, key): raise NotImplementedError() def close(self): pass class DictCache(BaseCache): def __init__(self, init_dict=None): self.lock = Lock() self.data = init_dict or {} def get(self, key): return self.data.get(key, None) def set(self, key, value): with self.lock: self.data.update({key: value}) def delete(self, key): with self.lock: if key in self.data: self.data.pop(key) """ The httplib2 algorithms ported for use with requests. """ import logging import re import calendar import time from email.utils import parsedate_tz from pip._vendor.requests.structures import CaseInsensitiveDict from .cache import DictCache from .serialize import Serializer logger = logging.getLogger(__name__) URI = re.compile(r"^(([^:/?#]+):)?(//([^/?#]*))?([^?#]*)(\?([^#]*))?(#(.*))?") def parse_uri(uri): """Parses a URI using the regex given in Appendix B of RFC 3986. (scheme, authority, path, query, fragment) = parse_uri(uri) """ groups = URI.match(uri).groups() return (groups[1], groups[3], groups[4], groups[6], groups[8]) class CacheController(object): """An interface to see if request should cached or not. """ def __init__( self, cache=None, cache_etags=True, serializer=None, status_codes=None ): self.cache = cache or DictCache() self.cache_etags = cache_etags self.serializer = serializer or Serializer() self.cacheable_status_codes = status_codes or (200, 203, 300, 301) @classmethod def _urlnorm(cls, uri): """Normalize the URL to create a safe key for the cache""" (scheme, authority, path, query, fragment) = parse_uri(uri) if not scheme or not authority: raise Exception("Only absolute URIs are allowed. uri = %s" % uri) scheme = scheme.lower() authority = authority.lower() if not path: path = "/" # Could do syntax based normalization of the URI before # computing the digest. See Section 6.2.2 of Std 66. request_uri = query and "?".join([path, query]) or path defrag_uri = scheme + "://" + authority + request_uri return defrag_uri @classmethod def cache_url(cls, uri): return cls._urlnorm(uri) def parse_cache_control(self, headers): known_directives = { # https://tools.ietf.org/html/rfc7234#section-5.2 "max-age": (int, True), "max-stale": (int, False), "min-fresh": (int, True), "no-cache": (None, False), "no-store": (None, False), "no-transform": (None, False), "only-if-cached": (None, False), "must-revalidate": (None, False), "public": (None, False), "private": (None, False), "proxy-revalidate": (None, False), "s-maxage": (int, True), } cc_headers = headers.get("cache-control", headers.get("Cache-Control", "")) retval = {} for cc_directive in cc_headers.split(","): if not cc_directive.strip(): continue parts = cc_directive.split("=", 1) directive = parts[0].strip() try: typ, required = known_directives[directive] except KeyError: logger.debug("Ignoring unknown cache-control directive: %s", directive) continue if not typ or not required: retval[directive] = None if typ: try: retval[directive] = typ(parts[1].strip()) except IndexError: if required: logger.debug( "Missing value for cache-control " "directive: %s", directive, ) except ValueError: logger.debug( "Invalid value for cache-control directive " "%s, must be %s", directive, typ.__name__, ) return retval def cached_request(self, request): """ Return a cached response if it exists in the cache, otherwise return False. """ cache_url = self.cache_url(request.url) logger.debug('Looking up "%s" in the cache', cache_url) cc = self.parse_cache_control(request.headers) # Bail out if the request insists on fresh data if "no-cache" in cc: logger.debug('Request header has "no-cache", cache bypassed') return False if "max-age" in cc and cc["max-age"] == 0: logger.debug('Request header has "max_age" as 0, cache bypassed') return False # Request allows serving from the cache, let's see if we find something cache_data = self.cache.get(cache_url) if cache_data is None: logger.debug("No cache entry available") return False # Check whether it can be deserialized resp = self.serializer.loads(request, cache_data) if not resp: logger.warning("Cache entry deserialization failed, entry ignored") return False # If we have a cached 301, return it immediately. We don't # need to test our response for other headers b/c it is # intrinsically "cacheable" as it is Permanent. # See: # https://tools.ietf.org/html/rfc7231#section-6.4.2 # # Client can try to refresh the value by repeating the request # with cache busting headers as usual (ie no-cache). if resp.status == 301: msg = ( 'Returning cached "301 Moved Permanently" response ' "(ignoring date and etag information)" ) logger.debug(msg) return resp headers = CaseInsensitiveDict(resp.headers) if not headers or "date" not in headers: if "etag" not in headers: # Without date or etag, the cached response can never be used # and should be deleted. logger.debug("Purging cached response: no date or etag") self.cache.delete(cache_url) logger.debug("Ignoring cached response: no date") return False now = time.time() date = calendar.timegm(parsedate_tz(headers["date"])) current_age = max(0, now - date) logger.debug("Current age based on date: %i", current_age) # TODO: There is an assumption that the result will be a # urllib3 response object. This may not be best since we # could probably avoid instantiating or constructing the # response until we know we need it. resp_cc = self.parse_cache_control(headers) # determine freshness freshness_lifetime = 0 # Check the max-age pragma in the cache control header if "max-age" in resp_cc: freshness_lifetime = resp_cc["max-age"] logger.debug("Freshness lifetime from max-age: %i", freshness_lifetime) # If there isn't a max-age, check for an expires header elif "expires" in headers: expires = parsedate_tz(headers["expires"]) if expires is not None: expire_time = calendar.timegm(expires) - date freshness_lifetime = max(0, expire_time) logger.debug("Freshness lifetime from expires: %i", freshness_lifetime) # Determine if we are setting freshness limit in the # request. Note, this overrides what was in the response. if "max-age" in cc: freshness_lifetime = cc["max-age"] logger.debug( "Freshness lifetime from request max-age: %i", freshness_lifetime ) if "min-fresh" in cc: min_fresh = cc["min-fresh"] # adjust our current age by our min fresh current_age += min_fresh logger.debug("Adjusted current age from min-fresh: %i", current_age) # Return entry if it is fresh enough if freshness_lifetime > current_age: logger.debug('The response is "fresh", returning cached response') logger.debug("%i > %i", freshness_lifetime, current_age) return resp # we're not fresh. If we don't have an Etag, clear it out if "etag" not in headers: logger.debug('The cached response is "stale" with no etag, purging') self.cache.delete(cache_url) # return the original handler return False def conditional_headers(self, request): cache_url = self.cache_url(request.url) resp = self.serializer.loads(request, self.cache.get(cache_url)) new_headers = {} if resp: headers = CaseInsensitiveDict(resp.headers) if "etag" in headers: new_headers["If-None-Match"] = headers["ETag"] if "last-modified" in headers: new_headers["If-Modified-Since"] = headers["Last-Modified"] return new_headers def cache_response(self, request, response, body=None, status_codes=None): """ Algorithm for caching requests. This assumes a requests Response object. """ # From httplib2: Don't cache 206's since we aren't going to # handle byte range requests cacheable_status_codes = status_codes or self.cacheable_status_codes if response.status not in cacheable_status_codes: logger.debug( "Status code %s not in %s", response.status, cacheable_status_codes ) return response_headers = CaseInsensitiveDict(response.headers) # If we've been given a body, our response has a Content-Length, that # Content-Length is valid then we can check to see if the body we've # been given matches the expected size, and if it doesn't we'll just # skip trying to cache it. if ( body is not None and "content-length" in response_headers and response_headers["content-length"].isdigit() and int(response_headers["content-length"]) != len(body) ): return cc_req = self.parse_cache_control(request.headers) cc = self.parse_cache_control(response_headers) cache_url = self.cache_url(request.url) logger.debug('Updating cache with response from "%s"', cache_url) # Delete it from the cache if we happen to have it stored there no_store = False if "no-store" in cc: no_store = True logger.debug('Response header has "no-store"') if "no-store" in cc_req: no_store = True logger.debug('Request header has "no-store"') if no_store and self.cache.get(cache_url): logger.debug('Purging existing cache entry to honor "no-store"') self.cache.delete(cache_url) if no_store: return # If we've been given an etag, then keep the response if self.cache_etags and "etag" in response_headers: logger.debug("Caching due to etag") self.cache.set( cache_url, self.serializer.dumps(request, response, body=body) ) # Add to the cache any 301s. We do this before looking that # the Date headers. elif response.status == 301: logger.debug("Caching permanant redirect") self.cache.set(cache_url, self.serializer.dumps(request, response)) # Add to the cache if the response headers demand it. If there # is no date header then we can't do anything about expiring # the cache. elif "date" in response_headers: # cache when there is a max-age > 0 if "max-age" in cc and cc["max-age"] > 0: logger.debug("Caching b/c date exists and max-age > 0") self.cache.set( cache_url, self.serializer.dumps(request, response, body=body) ) # If the request can expire, it means we should cache it # in the meantime. elif "expires" in response_headers: if response_headers["expires"]: logger.debug("Caching b/c of expires header") self.cache.set( cache_url, self.serializer.dumps(request, response, body=body) ) def update_cached_response(self, request, response): """On a 304 we will get a new set of headers that we want to update our cached value with, assuming we have one. This should only ever be called when we've sent an ETag and gotten a 304 as the response. """ cache_url = self.cache_url(request.url) cached_response = self.serializer.loads(request, self.cache.get(cache_url)) if not cached_response: # we didn't have a cached response return response # Lets update our headers with the headers from the new request: # http://tools.ietf.org/html/draft-ietf-httpbis-p4-conditional-26#section-4.1 # # The server isn't supposed to send headers that would make # the cached body invalid. But... just in case, we'll be sure # to strip out ones we know that might be problmatic due to # typical assumptions. excluded_headers = ["content-length"] cached_response.headers.update( dict( (k, v) for k, v in response.headers.items() if k.lower() not in excluded_headers ) ) # we want a 200 b/c we have content via the cache cached_response.status = 200 # update our cache self.cache.set(cache_url, self.serializer.dumps(request, cached_response)) return cached_response import logging from pip._vendor import requests from pip._vendor.cachecontrol.adapter import CacheControlAdapter from pip._vendor.cachecontrol.cache import DictCache from pip._vendor.cachecontrol.controller import logger from argparse import ArgumentParser def setup_logging(): logger.setLevel(logging.DEBUG) handler = logging.StreamHandler() logger.addHandler(handler) def get_session(): adapter = CacheControlAdapter( DictCache(), cache_etags=True, serializer=None, heuristic=None ) sess = requests.Session() sess.mount("http://", adapter) sess.mount("https://", adapter) sess.cache_controller = adapter.controller return sess def get_args(): parser = ArgumentParser() parser.add_argument("url", help="The URL to try and cache") return parser.parse_args() def main(args=None): args = get_args() sess = get_session() # Make a request to get a response resp = sess.get(args.url) # Turn on logging setup_logging() # try setting the cache sess.cache_controller.cache_response(resp.request, resp.raw) # Now try to get it if sess.cache_controller.cached_request(resp.request): print("Cached!") else: print("Not cached :(") if __name__ == "__main__": main() try: from urllib.parse import urljoin except ImportError: from urlparse import urljoin try: import cPickle as pickle except ImportError: import pickle # Handle the case where the requests module has been patched to not have # urllib3 bundled as part of its source. try: from pip._vendor.requests.packages.urllib3.response import HTTPResponse except ImportError: from pip._vendor.urllib3.response import HTTPResponse try: from pip._vendor.requests.packages.urllib3.util import is_fp_closed except ImportError: from pip._vendor.urllib3.util import is_fp_closed # Replicate some six behaviour try: text_type = unicode except NameError: text_type = str import base64 import io import json import zlib from pip._vendor import msgpack from pip._vendor.requests.structures import CaseInsensitiveDict from .compat import HTTPResponse, pickle, text_type def _b64_decode_bytes(b): return base64.b64decode(b.encode("ascii")) def _b64_decode_str(s): return _b64_decode_bytes(s).decode("utf8") class Serializer(object): def dumps(self, request, response, body=None): response_headers = CaseInsensitiveDict(response.headers) if body is None: body = response.read(decode_content=False) # NOTE: 99% sure this is dead code. I'm only leaving it # here b/c I don't have a test yet to prove # it. Basically, before using # `cachecontrol.filewrapper.CallbackFileWrapper`, # this made an effort to reset the file handle. The # `CallbackFileWrapper` short circuits this code by # setting the body as the content is consumed, the # result being a `body` argument is *always* passed # into cache_response, and in turn, # `Serializer.dump`. response._fp = io.BytesIO(body) # NOTE: This is all a bit weird, but it's really important that on # Python 2.x these objects are unicode and not str, even when # they contain only ascii. The problem here is that msgpack # understands the difference between unicode and bytes and we # have it set to differentiate between them, however Python 2 # doesn't know the difference. Forcing these to unicode will be # enough to have msgpack know the difference. data = { u"response": { u"body": body, u"headers": dict( (text_type(k), text_type(v)) for k, v in response.headers.items() ), u"status": response.status, u"version": response.version, u"reason": text_type(response.reason), u"strict": response.strict, u"decode_content": response.decode_content, } } # Construct our vary headers data[u"vary"] = {} if u"vary" in response_headers: varied_headers = response_headers[u"vary"].split(",") for header in varied_headers: header = text_type(header).strip() header_value = request.headers.get(header, None) if header_value is not None: header_value = text_type(header_value) data[u"vary"][header] = header_value return b",".join([b"cc=4", msgpack.dumps(data, use_bin_type=True)]) def loads(self, request, data): # Short circuit if we've been given an empty set of data if not data: return # Determine what version of the serializer the data was serialized # with try: ver, data = data.split(b",", 1) except ValueError: ver = b"cc=0" # Make sure that our "ver" is actually a version and isn't a false # positive from a , being in the data stream. if ver[:3] != b"cc=": data = ver + data ver = b"cc=0" # Get the version number out of the cc=N ver = ver.split(b"=", 1)[-1].decode("ascii") # Dispatch to the actual load method for the given version try: return getattr(self, "_loads_v{}".format(ver))(request, data) except AttributeError: # This is a version we don't have a loads function for, so we'll # just treat it as a miss and return None return def prepare_response(self, request, cached): """Verify our vary headers match and construct a real urllib3 HTTPResponse object. """ # Special case the '*' Vary value as it means we cannot actually # determine if the cached response is suitable for this request. if "*" in cached.get("vary", {}): return # Ensure that the Vary headers for the cached response match our # request for header, value in cached.get("vary", {}).items(): if request.headers.get(header, None) != value: return body_raw = cached["response"].pop("body") headers = CaseInsensitiveDict(data=cached["response"]["headers"]) if headers.get("transfer-encoding", "") == "chunked": headers.pop("transfer-encoding") cached["response"]["headers"] = headers try: body = io.BytesIO(body_raw) except TypeError: # This can happen if cachecontrol serialized to v1 format (pickle) # using Python 2. A Python 2 str(byte string) will be unpickled as # a Python 3 str (unicode string), which will cause the above to # fail with: # # TypeError: 'str' does not support the buffer interface body = io.BytesIO(body_raw.encode("utf8")) return HTTPResponse(body=body, preload_content=False, **cached["response"]) def _loads_v0(self, request, data): # The original legacy cache data. This doesn't contain enough # information to construct everything we need, so we'll treat this as # a miss. return def _loads_v1(self, request, data): try: cached = pickle.loads(data) except ValueError: return return self.prepare_response(request, cached) def _loads_v2(self, request, data): try: cached = json.loads(zlib.decompress(data).decode("utf8")) except (ValueError, zlib.error): return # We need to decode the items that we've base64 encoded cached["response"]["body"] = _b64_decode_bytes(cached["response"]["body"]) cached["response"]["headers"] = dict( (_b64_decode_str(k), _b64_decode_str(v)) for k, v in cached["response"]["headers"].items() ) cached["response"]["reason"] = _b64_decode_str(cached["response"]["reason"]) cached["vary"] = dict( (_b64_decode_str(k), _b64_decode_str(v) if v is not None else v) for k, v in cached["vary"].items() ) return self.prepare_response(request, cached) def _loads_v3(self, request, data): # Due to Python 2 encoding issues, it's impossible to know for sure # exactly how to load v3 entries, thus we'll treat these as a miss so # that they get rewritten out as v4 entries. return def _loads_v4(self, request, data): try: cached = msgpack.loads(data, encoding="utf-8") except ValueError: return return self.prepare_response(request, cached) from io import BytesIO class CallbackFileWrapper(object): """ Small wrapper around a fp object which will tee everything read into a buffer, and when that file is closed it will execute a callback with the contents of that buffer. All attributes are proxied to the underlying file object. This class uses members with a double underscore (__) leading prefix so as not to accidentally shadow an attribute. """ def __init__(self, fp, callback): self.__buf = BytesIO() self.__fp = fp self.__callback = callback def __getattr__(self, name): # The vaguaries of garbage collection means that self.__fp is # not always set. By using __getattribute__ and the private # name[0] allows looking up the attribute value and raising an # AttributeError when it doesn't exist. This stop thigns from # infinitely recursing calls to getattr in the case where # self.__fp hasn't been set. # # [0] https://docs.python.org/2/reference/expressions.html#atom-identifiers fp = self.__getattribute__("_CallbackFileWrapper__fp") return getattr(fp, name) def __is_fp_closed(self): try: return self.__fp.fp is None except AttributeError: pass try: return self.__fp.closed except AttributeError: pass # We just don't cache it then. # TODO: Add some logging here... return False def _close(self): if self.__callback: self.__callback(self.__buf.getvalue()) # We assign this to None here, because otherwise we can get into # really tricky problems where the CPython interpreter dead locks # because the callback is holding a reference to something which # has a __del__ method. Setting this to None breaks the cycle # and allows the garbage collector to do it's thing normally. self.__callback = None def read(self, amt=None): data = self.__fp.read(amt) self.__buf.write(data) if self.__is_fp_closed(): self._close() return data def _safe_read(self, amt): data = self.__fp._safe_read(amt) if amt == 2 and data == b"\r\n": # urllib executes this read to toss the CRLF at the end # of the chunk. return data self.__buf.write(data) if self.__is_fp_closed(): self._close() return data from .adapter import CacheControlAdapter from .cache import DictCache def CacheControl( sess, cache=None, cache_etags=True, serializer=None, heuristic=None, controller_class=None, adapter_class=None, cacheable_methods=None, ): cache = cache or DictCache() adapter_class = adapter_class or CacheControlAdapter adapter = adapter_class( cache, cache_etags=cache_etags, serializer=serializer, heuristic=heuristic, controller_class=controller_class, cacheable_methods=cacheable_methods, ) sess.mount("http://", adapter) sess.mount("https://", adapter) return sess U ��.e% � @ s4 d Z ddlmZ G dd� de�ZG dd� de�ZdS )zb The cache object API for implementing caches. 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The response is provided too allow warnings like 113 http://tools.ietf.org/html/rfc7234#section-5.5.4 where we need to explicitly say response is over 24 hours old. """ return '110 - "Response is Stale"' def update_headers(self, response): """Update the response headers with any new headers. NOTE: This SHOULD always include some Warning header to signify that the response was cached by the client, not by way of the provided headers. """ return {} def apply(self, response): updated_headers = self.update_headers(response) if updated_headers: response.headers.update(updated_headers) warning_header_value = self.warning(response) if warning_header_value is not None: response.headers.update({"Warning": warning_header_value}) return response class OneDayCache(BaseHeuristic): """ Cache the response by providing an expires 1 day in the future. """ def update_headers(self, response): headers = {} if "expires" not in response.headers: date = parsedate(response.headers["date"]) expires = expire_after(timedelta(days=1), date=datetime(*date[:6])) headers["expires"] = datetime_to_header(expires) headers["cache-control"] = "public" return headers class ExpiresAfter(BaseHeuristic): """ Cache **all** requests for a defined time period. """ def __init__(self, **kw): self.delta = timedelta(**kw) def update_headers(self, response): expires = expire_after(self.delta) return {"expires": datetime_to_header(expires), "cache-control": "public"} def warning(self, response): tmpl = "110 - Automatically cached for %s. Response might be stale" return tmpl % self.delta class LastModified(BaseHeuristic): """ If there is no Expires header already, fall back on Last-Modified using the heuristic from http://tools.ietf.org/html/rfc7234#section-4.2.2 to calculate a reasonable value. Firefox also does something like this per https://developer.mozilla.org/en-US/docs/Web/HTTP/Caching_FAQ http://lxr.mozilla.org/mozilla-release/source/netwerk/protocol/http/nsHttpResponseHead.cpp#397 Unlike mozilla we limit this to 24-hr. """ cacheable_by_default_statuses = { 200, 203, 204, 206, 300, 301, 404, 405, 410, 414, 501 } def update_headers(self, resp): headers = resp.headers if "expires" in headers: return {} if "cache-control" in headers and headers["cache-control"] != "public": return {} if resp.status not in self.cacheable_by_default_statuses: return {} if "date" not in headers or "last-modified" not in headers: return {} date = calendar.timegm(parsedate_tz(headers["date"])) last_modified = parsedate(headers["last-modified"]) if date is None or last_modified is None: return {} now = time.time() current_age = max(0, now - date) delta = date - calendar.timegm(last_modified) freshness_lifetime = max(0, min(delta / 10, 24 * 3600)) if freshness_lifetime <= current_age: return {} expires = date + freshness_lifetime return {"expires": time.strftime(TIME_FMT, time.gmtime(expires))} def warning(self, resp): return None """CacheControl import Interface. Make it easy to import from cachecontrol without long namespaces. """ __author__ = "Eric Larson" __email__ = "eric@ionrock.org" __version__ = "0.12.5" from .wrapper import CacheControl from .adapter import CacheControlAdapter from .controller import CacheController import types import functools import zlib from pip._vendor.requests.adapters import HTTPAdapter from .controller import CacheController from .cache import DictCache from .filewrapper import CallbackFileWrapper class CacheControlAdapter(HTTPAdapter): invalidating_methods = {"PUT", "DELETE"} def __init__( self, cache=None, cache_etags=True, controller_class=None, serializer=None, heuristic=None, cacheable_methods=None, *args, **kw ): super(CacheControlAdapter, self).__init__(*args, **kw) self.cache = cache or DictCache() self.heuristic = heuristic self.cacheable_methods = cacheable_methods or ("GET",) controller_factory = controller_class or CacheController self.controller = controller_factory( self.cache, cache_etags=cache_etags, serializer=serializer ) def send(self, request, cacheable_methods=None, **kw): """ Send a request. Use the request information to see if it exists in the cache and cache the response if we need to and can. """ cacheable = cacheable_methods or self.cacheable_methods if request.method in cacheable: try: cached_response = self.controller.cached_request(request) except zlib.error: cached_response = None if cached_response: return self.build_response(request, cached_response, from_cache=True) # check for etags and add headers if appropriate request.headers.update(self.controller.conditional_headers(request)) resp = super(CacheControlAdapter, self).send(request, **kw) return resp def build_response( self, request, response, from_cache=False, cacheable_methods=None ): """ Build a response by making a request or using the cache. This will end up calling send and returning a potentially cached response """ cacheable = cacheable_methods or self.cacheable_methods if not from_cache and request.method in cacheable: # Check for any heuristics that might update headers # before trying to cache. if self.heuristic: response = self.heuristic.apply(response) # apply any expiration heuristics if response.status == 304: # We must have sent an ETag request. This could mean # that we've been expired already or that we simply # have an etag. In either case, we want to try and # update the cache if that is the case. cached_response = self.controller.update_cached_response( request, response ) if cached_response is not response: from_cache = True # We are done with the server response, read a # possible response body (compliant servers will # not return one, but we cannot be 100% sure) and # release the connection back to the pool. response.read(decode_content=False) response.release_conn() response = cached_response # We always cache the 301 responses elif response.status == 301: self.controller.cache_response(request, response) else: # Wrap the response file with a wrapper that will cache the # response when the stream has been consumed. response._fp = CallbackFileWrapper( response._fp, functools.partial( self.controller.cache_response, request, response ), ) if response.chunked: super_update_chunk_length = response._update_chunk_length def _update_chunk_length(self): super_update_chunk_length() if self.chunk_left == 0: self._fp._close() response._update_chunk_length = types.MethodType( _update_chunk_length, response ) resp = super(CacheControlAdapter, self).build_response(request, response) # See if we should invalidate the cache. if request.method in self.invalidating_methods and resp.ok: cache_url = self.controller.cache_url(request.url) self.cache.delete(cache_url) # Give the request a from_cache attr to let people use it resp.from_cache = from_cache return resp def close(self): self.cache.close() super(CacheControlAdapter, self).close() import hashlib import os from textwrap import dedent from ..cache import BaseCache from ..controller import CacheController try: FileNotFoundError except NameError: # py2.X FileNotFoundError = (IOError, OSError) def _secure_open_write(filename, fmode): # We only want to write to this file, so open it in write only mode flags = os.O_WRONLY # os.O_CREAT | os.O_EXCL will fail if the file already exists, so we only # will open *new* files. # We specify this because we want to ensure that the mode we pass is the # mode of the file. flags |= os.O_CREAT | os.O_EXCL # Do not follow symlinks to prevent someone from making a symlink that # we follow and insecurely open a cache file. if hasattr(os, "O_NOFOLLOW"): flags |= os.O_NOFOLLOW # On Windows we'll mark this file as binary if hasattr(os, "O_BINARY"): flags |= os.O_BINARY # Before we open our file, we want to delete any existing file that is # there try: os.remove(filename) except (IOError, OSError): # The file must not exist already, so we can just skip ahead to opening pass # Open our file, the use of os.O_CREAT | os.O_EXCL will ensure that if a # race condition happens between the os.remove and this line, that an # error will be raised. Because we utilize a lockfile this should only # happen if someone is attempting to attack us. fd = os.open(filename, flags, fmode) try: return os.fdopen(fd, "wb") except: # An error occurred wrapping our FD in a file object os.close(fd) raise class FileCache(BaseCache): def __init__( self, directory, forever=False, filemode=0o0600, dirmode=0o0700, use_dir_lock=None, lock_class=None, ): if use_dir_lock is not None and lock_class is not None: raise ValueError("Cannot use use_dir_lock and lock_class together") try: from lockfile import LockFile from lockfile.mkdirlockfile import MkdirLockFile except ImportError: notice = dedent( """ NOTE: In order to use the FileCache you must have lockfile installed. You can install it via pip: pip install lockfile """ ) raise ImportError(notice) else: if use_dir_lock: lock_class = MkdirLockFile elif lock_class is None: lock_class = LockFile self.directory = directory self.forever = forever self.filemode = filemode self.dirmode = dirmode self.lock_class = lock_class @staticmethod def encode(x): return hashlib.sha224(x.encode()).hexdigest() def _fn(self, name): # NOTE: This method should not change as some may depend on it. # See: https://github.com/ionrock/cachecontrol/issues/63 hashed = self.encode(name) parts = list(hashed[:5]) + [hashed] return os.path.join(self.directory, *parts) def get(self, key): name = self._fn(key) try: with open(name, "rb") as fh: return fh.read() except FileNotFoundError: return None def set(self, key, value): name = self._fn(key) # Make sure the directory exists try: os.makedirs(os.path.dirname(name), self.dirmode) except (IOError, OSError): pass with self.lock_class(name) as lock: # Write our actual file with _secure_open_write(lock.path, self.filemode) as fh: fh.write(value) def delete(self, key): name = self._fn(key) if not self.forever: try: os.remove(name) except FileNotFoundError: pass def url_to_file_path(url, filecache): """Return the file cache path based on the URL. This does not ensure the file exists! """ key = CacheController.cache_url(url) return filecache._fn(key) from __future__ import division from datetime import datetime from pip._vendor.cachecontrol.cache import BaseCache class RedisCache(BaseCache): def __init__(self, conn): self.conn = conn def get(self, key): return self.conn.get(key) def set(self, key, value, expires=None): if not expires: self.conn.set(key, value) else: expires = expires - datetime.utcnow() self.conn.setex(key, int(expires.total_seconds()), value) def delete(self, key): self.conn.delete(key) def clear(self): """Helper for clearing all the keys in a database. 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Use with caution!N)r �keysr r r r r �clear s zRedisCache.clearc C s dS )z?Redis uses connection pooling, no need to close the connection.Nr )r r r r �close s zRedisCache.close)N) �__name__� __module__� __qualname__r r r r r r r r r r r s r N)Z __future__r r Z pip._vendor.cachecontrol.cacher r r r r r �<module> s from .file_cache import FileCache # noqa from .redis_cache import RedisCache # noqa """ webencodings.mklabels ~~~~~~~~~~~~~~~~~~~~~ Regenarate the webencodings.labels module. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ import json try: from urllib import urlopen except ImportError: from urllib.request import urlopen def assert_lower(string): assert string == string.lower() return string def generate(url): parts = ['''\ """ webencodings.labels ~~~~~~~~~~~~~~~~~~~ Map encoding labels to their name. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ # XXX Do not edit! # This file is automatically generated by mklabels.py LABELS = { '''] labels = [ (repr(assert_lower(label)).lstrip('u'), repr(encoding['name']).lstrip('u')) for category in json.loads(urlopen(url).read().decode('ascii')) for encoding in category['encodings'] for label in encoding['labels']] max_len = max(len(label) for label, name in labels) parts.extend( ' %s:%s %s,\n' % (label, ' ' * (max_len - len(label)), name) for label, name in labels) parts.append('}') return ''.join(parts) if __name__ == '__main__': print(generate('http://encoding.spec.whatwg.org/encodings.json')) U ��.e � @ sf d Z ddlZzddlmZ W n ek r< ddlmZ Y nX dd� Zdd� Zedkrbe ed �� dS ) z� webencodings.mklabels ~~~~~~~~~~~~~~~~~~~~~ Regenarate the webencodings.labels module. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. � N)�urlopenc C s | S �N� )�stringr r �E/usr/lib/python3.8/site-packages/pip/_vendor/webencodings/mklabels.py� assert_lower s r c sf dg}dd� t �t| ��� �d��D �}tdd� |D ��� |�� fdd�|D �� |�d� d �|�S ) Na """ webencodings.labels ~~~~~~~~~~~~~~~~~~~ Map encoding labels to their name. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. 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z big5-hkscszcn-big5�csbig5zx-x-big5Zcseucpkdfmtjapaneser" zx-euc-jp� csiso2022jpr# � csshiftjis�ms_kanjiz shift-jisr$ �sjisz windows-31jzx-sjisZcseuckrZ csksc56011987r% z iso-ir-149�koreanzks_c_5601-1987zks_c_5601-1989�ksc5601Zksc_5601z windows-949� csiso2022krr& r' zutf-16r( r) N)�__doc__ZLABELS� re re �C/usr/lib/python3.8/site-packages/pip/_vendor/webencodings/labels.py�<module> s� � �U ��.e � @ sf d Z ddlZzddlmZ W n ek r< ddlmZ Y nX dd� Zdd� Zedkrbe ed �� dS ) z� webencodings.mklabels ~~~~~~~~~~~~~~~~~~~~~ Regenarate the webencodings.labels module. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. � N)�urlopenc C s | | � � kst�| S �N)�lower�AssertionError)�string� r �E/usr/lib/python3.8/site-packages/pip/_vendor/webencodings/mklabels.py� assert_lower s r c sf dg}dd� t �t| ��� �d��D �}tdd� |D ��� |�� fdd�|D �� |�d� d �|�S ) Na """ webencodings.labels ~~~~~~~~~~~~~~~~~~~ Map encoding labels to their name. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. 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Z _encodingr r r �iter_decode_to_stringl s z/test_iter_decode.<locals>.iter_decode_to_stringr r r r5 r' s helloZhellos hes llos hell� or+ r- r& s � �� �� au a�� �s ���s �u ï»r. r0 � �s ��� s h�x-user-definedu hllor )r: r r r �test_iter_decodek s� ��� ��� ��� ��� ���rC c C s� d� tg d��dkst�d� tdgd��dks2t�d� tdgd��dksLt�d� tddddgd��dkslt�d� tddddgd��dks�t�d� tddddgd��dks�t�d� tddddgd ��d ks�t�d� tdd dd gd ��dks�t�d S )Nr r r r' r5 r6 r3 r1 r/ r2 u hZllorB s h�llo)r8 r r r r r r �test_iter_encode� s" ���rD c C s@ d} d}d} d}t | d�|td�fks*t�t|d�| ks<t�d S )Ns 2, O�#�ɻtϨ�u 2, O#ts aaZaarB )r r r r )ZencodedZdecodedr r r �test_x_user_defined� s rE N)�__doc__Z __future__r r r r r r r r r r r r r r% r) r4 r7 rC rD rE r r r r �<module> s , U ��.e� � @ s� d Z ddlmZ ddlZG dd� dej�ZG dd� dej�ZG dd � d ej�ZG d d � d eej�ZG d d � d eej�Zej de� j e� j eeeed�Z dZ e�e �ZdS )z� webencodings.x_user_defined ~~~~~~~~~~~~~~~~~~~~~~~~~~~ An implementation of the x-user-defined encoding. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. � )�unicode_literalsNc @ s e Zd Zddd�Zddd�ZdS ) �Codec�strictc C s t �||t�S �N)�codecs�charmap_encode�encoding_table��self�input�errors� r �K/usr/lib/python3.8/site-packages/pip/_vendor/webencodings/x_user_defined.py�encode s z Codec.encodec C s t �||t�S r )r �charmap_decode�decoding_tabler r r r �decode s z Codec.decodeN)r )r )�__name__� __module__� __qualname__r r r r r r r s r c @ s e Zd Zddd�ZdS )�IncrementalEncoderFc C s t �|| jt�d S �Nr )r r r r �r r �finalr r r r s zIncrementalEncoder.encodeN)F)r r r r r r r r r s r c @ s e Zd Zddd�ZdS )�IncrementalDecoderFc C s t �|| jt�d S r )r r r r r r r r r $ s zIncrementalDecoder.decodeN)F)r r r r r r r r r # s r c @ s e Zd ZdS )� StreamWriterN�r r r r r r r r ( s r c @ s e Zd ZdS )� StreamReaderNr r r r r r , s r zx-user-defined)�namer r �incrementalencoder�incrementaldecoder� streamreader� streamwriteru !"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]^_`abcdefghijklmnopqrstuvwxyz{|}~)�__doc__Z __future__r r r r r r r � CodecInfor r Z codec_infor � charmap_buildr r r r r �<module> s* �� # coding: utf-8 """ webencodings ~~~~~~~~~~~~ This is a Python implementation of the `WHATWG Encoding standard <http://encoding.spec.whatwg.org/>`. See README for details. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ from __future__ import unicode_literals import codecs from .labels import LABELS VERSION = '0.5.1' # Some names in Encoding are not valid Python aliases. Remap these. PYTHON_NAMES = { 'iso-8859-8-i': 'iso-8859-8', 'x-mac-cyrillic': 'mac-cyrillic', 'macintosh': 'mac-roman', 'windows-874': 'cp874'} CACHE = {} def ascii_lower(string): r"""Transform (only) ASCII letters to lower case: A-Z is mapped to a-z. :param string: An Unicode string. :returns: A new Unicode string. This is used for `ASCII case-insensitive <http://encoding.spec.whatwg.org/#ascii-case-insensitive>`_ matching of encoding labels. The same matching is also used, among other things, for `CSS keywords <http://dev.w3.org/csswg/css-values/#keywords>`_. This is different from the :meth:`~py:str.lower` method of Unicode strings which also affect non-ASCII characters, sometimes mapping them into the ASCII range: >>> keyword = u'Bac\N{KELVIN SIGN}ground' >>> assert keyword.lower() == u'background' >>> assert ascii_lower(keyword) != keyword.lower() >>> assert ascii_lower(keyword) == u'bac\N{KELVIN SIGN}ground' """ # This turns out to be faster than unicode.translate() return string.encode('utf8').lower().decode('utf8') def lookup(label): """ Look for an encoding by its label. This is the spec’s `get an encoding <http://encoding.spec.whatwg.org/#concept-encoding-get>`_ algorithm. Supported labels are listed there. :param label: A string. :returns: An :class:`Encoding` object, or :obj:`None` for an unknown label. """ # Only strip ASCII whitespace: U+0009, U+000A, U+000C, U+000D, and U+0020. label = ascii_lower(label.strip('\t\n\f\r ')) name = LABELS.get(label) if name is None: return None encoding = CACHE.get(name) if encoding is None: if name == 'x-user-defined': from .x_user_defined import codec_info else: python_name = PYTHON_NAMES.get(name, name) # Any python_name value that gets to here should be valid. codec_info = codecs.lookup(python_name) encoding = Encoding(name, codec_info) CACHE[name] = encoding return encoding def _get_encoding(encoding_or_label): """ Accept either an encoding object or label. :param encoding: An :class:`Encoding` object or a label string. :returns: An :class:`Encoding` object. :raises: :exc:`~exceptions.LookupError` for an unknown label. """ if hasattr(encoding_or_label, 'codec_info'): return encoding_or_label encoding = lookup(encoding_or_label) if encoding is None: raise LookupError('Unknown encoding label: %r' % encoding_or_label) return encoding class Encoding(object): """Reresents a character encoding such as UTF-8, that can be used for decoding or encoding. .. attribute:: name Canonical name of the encoding .. attribute:: codec_info The actual implementation of the encoding, a stdlib :class:`~codecs.CodecInfo` object. See :func:`codecs.register`. """ def __init__(self, name, codec_info): self.name = name self.codec_info = codec_info def __repr__(self): return '<Encoding %s>' % self.name #: The UTF-8 encoding. Should be used for new content and formats. UTF8 = lookup('utf-8') _UTF16LE = lookup('utf-16le') _UTF16BE = lookup('utf-16be') def decode(input, fallback_encoding, errors='replace'): """ Decode a single string. :param input: A byte string :param fallback_encoding: An :class:`Encoding` object or a label string. The encoding to use if :obj:`input` does note have a BOM. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :return: A ``(output, encoding)`` tuple of an Unicode string and an :obj:`Encoding`. """ # Fail early if `encoding` is an invalid label. fallback_encoding = _get_encoding(fallback_encoding) bom_encoding, input = _detect_bom(input) encoding = bom_encoding or fallback_encoding return encoding.codec_info.decode(input, errors)[0], encoding def _detect_bom(input): """Return (bom_encoding, input), with any BOM removed from the input.""" if input.startswith(b'\xFF\xFE'): return _UTF16LE, input[2:] if input.startswith(b'\xFE\xFF'): return _UTF16BE, input[2:] if input.startswith(b'\xEF\xBB\xBF'): return UTF8, input[3:] return None, input def encode(input, encoding=UTF8, errors='strict'): """ Encode a single string. :param input: An Unicode string. :param encoding: An :class:`Encoding` object or a label string. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :return: A byte string. """ return _get_encoding(encoding).codec_info.encode(input, errors)[0] def iter_decode(input, fallback_encoding, errors='replace'): """ "Pull"-based decoder. :param input: An iterable of byte strings. The input is first consumed just enough to determine the encoding based on the precense of a BOM, then consumed on demand when the return value is. :param fallback_encoding: An :class:`Encoding` object or a label string. The encoding to use if :obj:`input` does note have a BOM. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :returns: An ``(output, encoding)`` tuple. :obj:`output` is an iterable of Unicode strings, :obj:`encoding` is the :obj:`Encoding` that is being used. """ decoder = IncrementalDecoder(fallback_encoding, errors) generator = _iter_decode_generator(input, decoder) encoding = next(generator) return generator, encoding def _iter_decode_generator(input, decoder): """Return a generator that first yields the :obj:`Encoding`, then yields output chukns as Unicode strings. """ decode = decoder.decode input = iter(input) for chunck in input: output = decode(chunck) if output: assert decoder.encoding is not None yield decoder.encoding yield output break else: # Input exhausted without determining the encoding output = decode(b'', final=True) assert decoder.encoding is not None yield decoder.encoding if output: yield output return for chunck in input: output = decode(chunck) if output: yield output output = decode(b'', final=True) if output: yield output def iter_encode(input, encoding=UTF8, errors='strict'): """ “Pull”-based encoder. :param input: An iterable of Unicode strings. :param encoding: An :class:`Encoding` object or a label string. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. :returns: An iterable of byte strings. """ # Fail early if `encoding` is an invalid label. encode = IncrementalEncoder(encoding, errors).encode return _iter_encode_generator(input, encode) def _iter_encode_generator(input, encode): for chunck in input: output = encode(chunck) if output: yield output output = encode('', final=True) if output: yield output class IncrementalDecoder(object): """ “Push”-based decoder. :param fallback_encoding: An :class:`Encoding` object or a label string. The encoding to use if :obj:`input` does note have a BOM. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. """ def __init__(self, fallback_encoding, errors='replace'): # Fail early if `encoding` is an invalid label. self._fallback_encoding = _get_encoding(fallback_encoding) self._errors = errors self._buffer = b'' self._decoder = None #: The actual :class:`Encoding` that is being used, #: or :obj:`None` if that is not determined yet. #: (Ie. if there is not enough input yet to determine #: if there is a BOM.) self.encoding = None # Not known yet. def decode(self, input, final=False): """Decode one chunk of the input. :param input: A byte string. :param final: Indicate that no more input is available. Must be :obj:`True` if this is the last call. :returns: An Unicode string. """ decoder = self._decoder if decoder is not None: return decoder(input, final) input = self._buffer + input encoding, input = _detect_bom(input) if encoding is None: if len(input) < 3 and not final: # Not enough data yet. self._buffer = input return '' else: # No BOM encoding = self._fallback_encoding decoder = encoding.codec_info.incrementaldecoder(self._errors).decode self._decoder = decoder self.encoding = encoding return decoder(input, final) class IncrementalEncoder(object): """ “Push”-based encoder. :param encoding: An :class:`Encoding` object or a label string. :param errors: Type of error handling. See :func:`codecs.register`. :raises: :exc:`~exceptions.LookupError` for an unknown encoding label. .. method:: encode(input, final=False) :param input: An Unicode string. :param final: Indicate that no more input is available. Must be :obj:`True` if this is the last call. :returns: A byte string. """ def __init__(self, encoding=UTF8, errors='strict'): encoding = _get_encoding(encoding) self.encode = encoding.codec_info.incrementalencoder(errors).encode # coding: utf-8 """ webencodings.tests ~~~~~~~~~~~~~~~~~~ A basic test suite for Encoding. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ from __future__ import unicode_literals from . import (lookup, LABELS, decode, encode, iter_decode, iter_encode, IncrementalDecoder, IncrementalEncoder, UTF8) def assert_raises(exception, function, *args, **kwargs): try: function(*args, **kwargs) except exception: return else: # pragma: no cover raise AssertionError('Did not raise %s.' % exception) def test_labels(): assert lookup('utf-8').name == 'utf-8' assert lookup('Utf-8').name == 'utf-8' assert lookup('UTF-8').name == 'utf-8' assert lookup('utf8').name == 'utf-8' assert lookup('utf8').name == 'utf-8' assert lookup('utf8 ').name == 'utf-8' assert lookup(' \r\nutf8\t').name == 'utf-8' assert lookup('u8') is None # Python label. assert lookup('utf-8 ') is None # Non-ASCII white space. assert lookup('US-ASCII').name == 'windows-1252' assert lookup('iso-8859-1').name == 'windows-1252' assert lookup('latin1').name == 'windows-1252' assert lookup('LATIN1').name == 'windows-1252' assert lookup('latin-1') is None assert lookup('LATİN1') is None # ASCII-only case insensitivity. def test_all_labels(): for label in LABELS: assert decode(b'', label) == ('', lookup(label)) assert encode('', label) == b'' for repeat in [0, 1, 12]: output, _ = iter_decode([b''] * repeat, label) assert list(output) == [] assert list(iter_encode([''] * repeat, label)) == [] decoder = IncrementalDecoder(label) assert decoder.decode(b'') == '' assert decoder.decode(b'', final=True) == '' encoder = IncrementalEncoder(label) assert encoder.encode('') == b'' assert encoder.encode('', final=True) == b'' # All encoding names are valid labels too: for name in set(LABELS.values()): assert lookup(name).name == name def test_invalid_label(): assert_raises(LookupError, decode, b'\xEF\xBB\xBF\xc3\xa9', 'invalid') assert_raises(LookupError, encode, 'é', 'invalid') assert_raises(LookupError, iter_decode, [], 'invalid') assert_raises(LookupError, iter_encode, [], 'invalid') assert_raises(LookupError, IncrementalDecoder, 'invalid') assert_raises(LookupError, IncrementalEncoder, 'invalid') def test_decode(): assert decode(b'\x80', 'latin1') == ('€', lookup('latin1')) assert decode(b'\x80', lookup('latin1')) == ('€', lookup('latin1')) assert decode(b'\xc3\xa9', 'utf8') == ('é', lookup('utf8')) assert decode(b'\xc3\xa9', UTF8) == ('é', lookup('utf8')) assert decode(b'\xc3\xa9', 'ascii') == ('é', lookup('ascii')) assert decode(b'\xEF\xBB\xBF\xc3\xa9', 'ascii') == ('é', lookup('utf8')) # UTF-8 with BOM assert decode(b'\xFE\xFF\x00\xe9', 'ascii') == ('é', lookup('utf-16be')) # UTF-16-BE with BOM assert decode(b'\xFF\xFE\xe9\x00', 'ascii') == ('é', lookup('utf-16le')) # UTF-16-LE with BOM assert decode(b'\xFE\xFF\xe9\x00', 'ascii') == ('\ue900', lookup('utf-16be')) assert decode(b'\xFF\xFE\x00\xe9', 'ascii') == ('\ue900', lookup('utf-16le')) assert decode(b'\x00\xe9', 'UTF-16BE') == ('é', lookup('utf-16be')) assert decode(b'\xe9\x00', 'UTF-16LE') == ('é', lookup('utf-16le')) assert decode(b'\xe9\x00', 'UTF-16') == ('é', lookup('utf-16le')) assert decode(b'\xe9\x00', 'UTF-16BE') == ('\ue900', lookup('utf-16be')) assert decode(b'\x00\xe9', 'UTF-16LE') == ('\ue900', lookup('utf-16le')) assert decode(b'\x00\xe9', 'UTF-16') == ('\ue900', lookup('utf-16le')) def test_encode(): assert encode('é', 'latin1') == b'\xe9' assert encode('é', 'utf8') == b'\xc3\xa9' assert encode('é', 'utf8') == b'\xc3\xa9' assert encode('é', 'utf-16') == b'\xe9\x00' assert encode('é', 'utf-16le') == b'\xe9\x00' assert encode('é', 'utf-16be') == b'\x00\xe9' def test_iter_decode(): def iter_decode_to_string(input, fallback_encoding): output, _encoding = iter_decode(input, fallback_encoding) return ''.join(output) assert iter_decode_to_string([], 'latin1') == '' assert iter_decode_to_string([b''], 'latin1') == '' assert iter_decode_to_string([b'\xe9'], 'latin1') == 'é' assert iter_decode_to_string([b'hello'], 'latin1') == 'hello' assert iter_decode_to_string([b'he', b'llo'], 'latin1') == 'hello' assert iter_decode_to_string([b'hell', b'o'], 'latin1') == 'hello' assert iter_decode_to_string([b'\xc3\xa9'], 'latin1') == 'é' assert iter_decode_to_string([b'\xEF\xBB\xBF\xc3\xa9'], 'latin1') == 'é' assert iter_decode_to_string([ b'\xEF\xBB\xBF', b'\xc3', b'\xa9'], 'latin1') == 'é' assert iter_decode_to_string([ b'\xEF\xBB\xBF', b'a', b'\xc3'], 'latin1') == 'a\uFFFD' assert iter_decode_to_string([ b'', b'\xEF', b'', b'', b'\xBB\xBF\xc3', b'\xa9'], 'latin1') == 'é' assert iter_decode_to_string([b'\xEF\xBB\xBF'], 'latin1') == '' assert iter_decode_to_string([b'\xEF\xBB'], 'latin1') == 'ï»' assert iter_decode_to_string([b'\xFE\xFF\x00\xe9'], 'latin1') == 'é' assert iter_decode_to_string([b'\xFF\xFE\xe9\x00'], 'latin1') == 'é' assert iter_decode_to_string([ b'', b'\xFF', b'', b'', b'\xFE\xe9', b'\x00'], 'latin1') == 'é' assert iter_decode_to_string([ b'', b'h\xe9', b'llo'], 'x-user-defined') == 'h\uF7E9llo' def test_iter_encode(): assert b''.join(iter_encode([], 'latin1')) == b'' assert b''.join(iter_encode([''], 'latin1')) == b'' assert b''.join(iter_encode(['é'], 'latin1')) == b'\xe9' assert b''.join(iter_encode(['', 'é', '', ''], 'latin1')) == b'\xe9' assert b''.join(iter_encode(['', 'é', '', ''], 'utf-16')) == b'\xe9\x00' assert b''.join(iter_encode(['', 'é', '', ''], 'utf-16le')) == b'\xe9\x00' assert b''.join(iter_encode(['', 'é', '', ''], 'utf-16be')) == b'\x00\xe9' assert b''.join(iter_encode([ '', 'h\uF7E9', '', 'llo'], 'x-user-defined')) == b'h\xe9llo' def test_x_user_defined(): encoded = b'2,\x0c\x0b\x1aO\xd9#\xcb\x0f\xc9\xbbt\xcf\xa8\xca' decoded = '2,\x0c\x0b\x1aO\uf7d9#\uf7cb\x0f\uf7c9\uf7bbt\uf7cf\uf7a8\uf7ca' encoded = b'aa' decoded = 'aa' assert decode(encoded, 'x-user-defined') == (decoded, lookup('x-user-defined')) assert encode(decoded, 'x-user-defined') == encoded """ webencodings.labels ~~~~~~~~~~~~~~~~~~~ Map encoding labels to their name. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ # XXX Do not edit! # This file is automatically generated by mklabels.py LABELS = { 'unicode-1-1-utf-8': 'utf-8', 'utf-8': 'utf-8', 'utf8': 'utf-8', '866': 'ibm866', 'cp866': 'ibm866', 'csibm866': 'ibm866', 'ibm866': 'ibm866', 'csisolatin2': 'iso-8859-2', 'iso-8859-2': 'iso-8859-2', 'iso-ir-101': 'iso-8859-2', 'iso8859-2': 'iso-8859-2', 'iso88592': 'iso-8859-2', 'iso_8859-2': 'iso-8859-2', 'iso_8859-2:1987': 'iso-8859-2', 'l2': 'iso-8859-2', 'latin2': 'iso-8859-2', 'csisolatin3': 'iso-8859-3', 'iso-8859-3': 'iso-8859-3', 'iso-ir-109': 'iso-8859-3', 'iso8859-3': 'iso-8859-3', 'iso88593': 'iso-8859-3', 'iso_8859-3': 'iso-8859-3', 'iso_8859-3:1988': 'iso-8859-3', 'l3': 'iso-8859-3', 'latin3': 'iso-8859-3', 'csisolatin4': 'iso-8859-4', 'iso-8859-4': 'iso-8859-4', 'iso-ir-110': 'iso-8859-4', 'iso8859-4': 'iso-8859-4', 'iso88594': 'iso-8859-4', 'iso_8859-4': 'iso-8859-4', 'iso_8859-4:1988': 'iso-8859-4', 'l4': 'iso-8859-4', 'latin4': 'iso-8859-4', 'csisolatincyrillic': 'iso-8859-5', 'cyrillic': 'iso-8859-5', 'iso-8859-5': 'iso-8859-5', 'iso-ir-144': 'iso-8859-5', 'iso8859-5': 'iso-8859-5', 'iso88595': 'iso-8859-5', 'iso_8859-5': 'iso-8859-5', 'iso_8859-5:1988': 'iso-8859-5', 'arabic': 'iso-8859-6', 'asmo-708': 'iso-8859-6', 'csiso88596e': 'iso-8859-6', 'csiso88596i': 'iso-8859-6', 'csisolatinarabic': 'iso-8859-6', 'ecma-114': 'iso-8859-6', 'iso-8859-6': 'iso-8859-6', 'iso-8859-6-e': 'iso-8859-6', 'iso-8859-6-i': 'iso-8859-6', 'iso-ir-127': 'iso-8859-6', 'iso8859-6': 'iso-8859-6', 'iso88596': 'iso-8859-6', 'iso_8859-6': 'iso-8859-6', 'iso_8859-6:1987': 'iso-8859-6', 'csisolatingreek': 'iso-8859-7', 'ecma-118': 'iso-8859-7', 'elot_928': 'iso-8859-7', 'greek': 'iso-8859-7', 'greek8': 'iso-8859-7', 'iso-8859-7': 'iso-8859-7', 'iso-ir-126': 'iso-8859-7', 'iso8859-7': 'iso-8859-7', 'iso88597': 'iso-8859-7', 'iso_8859-7': 'iso-8859-7', 'iso_8859-7:1987': 'iso-8859-7', 'sun_eu_greek': 'iso-8859-7', 'csiso88598e': 'iso-8859-8', 'csisolatinhebrew': 'iso-8859-8', 'hebrew': 'iso-8859-8', 'iso-8859-8': 'iso-8859-8', 'iso-8859-8-e': 'iso-8859-8', 'iso-ir-138': 'iso-8859-8', 'iso8859-8': 'iso-8859-8', 'iso88598': 'iso-8859-8', 'iso_8859-8': 'iso-8859-8', 'iso_8859-8:1988': 'iso-8859-8', 'visual': 'iso-8859-8', 'csiso88598i': 'iso-8859-8-i', 'iso-8859-8-i': 'iso-8859-8-i', 'logical': 'iso-8859-8-i', 'csisolatin6': 'iso-8859-10', 'iso-8859-10': 'iso-8859-10', 'iso-ir-157': 'iso-8859-10', 'iso8859-10': 'iso-8859-10', 'iso885910': 'iso-8859-10', 'l6': 'iso-8859-10', 'latin6': 'iso-8859-10', 'iso-8859-13': 'iso-8859-13', 'iso8859-13': 'iso-8859-13', 'iso885913': 'iso-8859-13', 'iso-8859-14': 'iso-8859-14', 'iso8859-14': 'iso-8859-14', 'iso885914': 'iso-8859-14', 'csisolatin9': 'iso-8859-15', 'iso-8859-15': 'iso-8859-15', 'iso8859-15': 'iso-8859-15', 'iso885915': 'iso-8859-15', 'iso_8859-15': 'iso-8859-15', 'l9': 'iso-8859-15', 'iso-8859-16': 'iso-8859-16', 'cskoi8r': 'koi8-r', 'koi': 'koi8-r', 'koi8': 'koi8-r', 'koi8-r': 'koi8-r', 'koi8_r': 'koi8-r', 'koi8-u': 'koi8-u', 'csmacintosh': 'macintosh', 'mac': 'macintosh', 'macintosh': 'macintosh', 'x-mac-roman': 'macintosh', 'dos-874': 'windows-874', 'iso-8859-11': 'windows-874', 'iso8859-11': 'windows-874', 'iso885911': 'windows-874', 'tis-620': 'windows-874', 'windows-874': 'windows-874', 'cp1250': 'windows-1250', 'windows-1250': 'windows-1250', 'x-cp1250': 'windows-1250', 'cp1251': 'windows-1251', 'windows-1251': 'windows-1251', 'x-cp1251': 'windows-1251', 'ansi_x3.4-1968': 'windows-1252', 'ascii': 'windows-1252', 'cp1252': 'windows-1252', 'cp819': 'windows-1252', 'csisolatin1': 'windows-1252', 'ibm819': 'windows-1252', 'iso-8859-1': 'windows-1252', 'iso-ir-100': 'windows-1252', 'iso8859-1': 'windows-1252', 'iso88591': 'windows-1252', 'iso_8859-1': 'windows-1252', 'iso_8859-1:1987': 'windows-1252', 'l1': 'windows-1252', 'latin1': 'windows-1252', 'us-ascii': 'windows-1252', 'windows-1252': 'windows-1252', 'x-cp1252': 'windows-1252', 'cp1253': 'windows-1253', 'windows-1253': 'windows-1253', 'x-cp1253': 'windows-1253', 'cp1254': 'windows-1254', 'csisolatin5': 'windows-1254', 'iso-8859-9': 'windows-1254', 'iso-ir-148': 'windows-1254', 'iso8859-9': 'windows-1254', 'iso88599': 'windows-1254', 'iso_8859-9': 'windows-1254', 'iso_8859-9:1989': 'windows-1254', 'l5': 'windows-1254', 'latin5': 'windows-1254', 'windows-1254': 'windows-1254', 'x-cp1254': 'windows-1254', 'cp1255': 'windows-1255', 'windows-1255': 'windows-1255', 'x-cp1255': 'windows-1255', 'cp1256': 'windows-1256', 'windows-1256': 'windows-1256', 'x-cp1256': 'windows-1256', 'cp1257': 'windows-1257', 'windows-1257': 'windows-1257', 'x-cp1257': 'windows-1257', 'cp1258': 'windows-1258', 'windows-1258': 'windows-1258', 'x-cp1258': 'windows-1258', 'x-mac-cyrillic': 'x-mac-cyrillic', 'x-mac-ukrainian': 'x-mac-cyrillic', 'chinese': 'gbk', 'csgb2312': 'gbk', 'csiso58gb231280': 'gbk', 'gb2312': 'gbk', 'gb_2312': 'gbk', 'gb_2312-80': 'gbk', 'gbk': 'gbk', 'iso-ir-58': 'gbk', 'x-gbk': 'gbk', 'gb18030': 'gb18030', 'hz-gb-2312': 'hz-gb-2312', 'big5': 'big5', 'big5-hkscs': 'big5', 'cn-big5': 'big5', 'csbig5': 'big5', 'x-x-big5': 'big5', 'cseucpkdfmtjapanese': 'euc-jp', 'euc-jp': 'euc-jp', 'x-euc-jp': 'euc-jp', 'csiso2022jp': 'iso-2022-jp', 'iso-2022-jp': 'iso-2022-jp', 'csshiftjis': 'shift_jis', 'ms_kanji': 'shift_jis', 'shift-jis': 'shift_jis', 'shift_jis': 'shift_jis', 'sjis': 'shift_jis', 'windows-31j': 'shift_jis', 'x-sjis': 'shift_jis', 'cseuckr': 'euc-kr', 'csksc56011987': 'euc-kr', 'euc-kr': 'euc-kr', 'iso-ir-149': 'euc-kr', 'korean': 'euc-kr', 'ks_c_5601-1987': 'euc-kr', 'ks_c_5601-1989': 'euc-kr', 'ksc5601': 'euc-kr', 'ksc_5601': 'euc-kr', 'windows-949': 'euc-kr', 'csiso2022kr': 'iso-2022-kr', 'iso-2022-kr': 'iso-2022-kr', 'utf-16be': 'utf-16be', 'utf-16': 'utf-16le', 'utf-16le': 'utf-16le', 'x-user-defined': 'x-user-defined', } # coding: utf-8 """ webencodings.x_user_defined ~~~~~~~~~~~~~~~~~~~~~~~~~~~ An implementation of the x-user-defined encoding. :copyright: Copyright 2012 by Simon Sapin :license: BSD, see LICENSE for details. """ from __future__ import unicode_literals import codecs ### Codec APIs class Codec(codecs.Codec): def encode(self, input, errors='strict'): return codecs.charmap_encode(input, errors, encoding_table) def decode(self, input, errors='strict'): return codecs.charmap_decode(input, errors, decoding_table) class IncrementalEncoder(codecs.IncrementalEncoder): def encode(self, input, final=False): return codecs.charmap_encode(input, self.errors, encoding_table)[0] class IncrementalDecoder(codecs.IncrementalDecoder): def decode(self, input, final=False): return codecs.charmap_decode(input, self.errors, decoding_table)[0] class StreamWriter(Codec, codecs.StreamWriter): pass class StreamReader(Codec, codecs.StreamReader): pass ### encodings module API codec_info = codecs.CodecInfo( name='x-user-defined', encode=Codec().encode, decode=Codec().decode, incrementalencoder=IncrementalEncoder, incrementaldecoder=IncrementalDecoder, streamreader=StreamReader, streamwriter=StreamWriter, ) ### Decoding Table # Python 3: # for c in range(256): print(' %r' % chr(c if c < 128 else c + 0xF700)) decoding_table = ( '\x00' '\x01' '\x02' '\x03' '\x04' '\x05' '\x06' '\x07' '\x08' '\t' '\n' '\x0b' '\x0c' '\r' '\x0e' '\x0f' '\x10' '\x11' '\x12' '\x13' '\x14' '\x15' '\x16' '\x17' '\x18' '\x19' '\x1a' '\x1b' '\x1c' '\x1d' '\x1e' '\x1f' ' ' '!' '"' '#' '$' '%' '&' "'" '(' ')' '*' '+' ',' '-' '.' '/' '0' '1' '2' '3' '4' '5' '6' '7' '8' '9' ':' ';' '<' '=' '>' '?' '@' 'A' 'B' 'C' 'D' 'E' 'F' 'G' 'H' 'I' 'J' 'K' 'L' 'M' 'N' 'O' 'P' 'Q' 'R' 'S' 'T' 'U' 'V' 'W' 'X' 'Y' 'Z' '[' '\\' ']' '^' '_' '`' 'a' 'b' 'c' 'd' 'e' 'f' 'g' 'h' 'i' 'j' 'k' 'l' 'm' 'n' 'o' 'p' 'q' 'r' 's' 't' 'u' 'v' 'w' 'x' 'y' 'z' '{' '|' '}' '~' '\x7f' '\uf780' '\uf781' '\uf782' '\uf783' '\uf784' '\uf785' '\uf786' '\uf787' '\uf788' '\uf789' '\uf78a' '\uf78b' '\uf78c' '\uf78d' '\uf78e' '\uf78f' '\uf790' '\uf791' '\uf792' '\uf793' '\uf794' '\uf795' '\uf796' '\uf797' '\uf798' '\uf799' '\uf79a' '\uf79b' '\uf79c' '\uf79d' '\uf79e' '\uf79f' '\uf7a0' '\uf7a1' '\uf7a2' '\uf7a3' '\uf7a4' '\uf7a5' '\uf7a6' '\uf7a7' '\uf7a8' '\uf7a9' '\uf7aa' '\uf7ab' '\uf7ac' '\uf7ad' '\uf7ae' '\uf7af' '\uf7b0' '\uf7b1' '\uf7b2' '\uf7b3' '\uf7b4' '\uf7b5' '\uf7b6' '\uf7b7' '\uf7b8' '\uf7b9' '\uf7ba' '\uf7bb' '\uf7bc' '\uf7bd' '\uf7be' '\uf7bf' '\uf7c0' '\uf7c1' '\uf7c2' '\uf7c3' '\uf7c4' '\uf7c5' '\uf7c6' '\uf7c7' '\uf7c8' '\uf7c9' '\uf7ca' '\uf7cb' '\uf7cc' '\uf7cd' '\uf7ce' '\uf7cf' '\uf7d0' '\uf7d1' '\uf7d2' '\uf7d3' '\uf7d4' '\uf7d5' '\uf7d6' '\uf7d7' '\uf7d8' '\uf7d9' '\uf7da' '\uf7db' '\uf7dc' '\uf7dd' '\uf7de' '\uf7df' '\uf7e0' '\uf7e1' '\uf7e2' '\uf7e3' '\uf7e4' '\uf7e5' '\uf7e6' '\uf7e7' '\uf7e8' '\uf7e9' '\uf7ea' '\uf7eb' '\uf7ec' '\uf7ed' '\uf7ee' '\uf7ef' '\uf7f0' '\uf7f1' '\uf7f2' '\uf7f3' '\uf7f4' '\uf7f5' '\uf7f6' '\uf7f7' '\uf7f8' '\uf7f9' '\uf7fa' '\uf7fb' '\uf7fc' '\uf7fd' '\uf7fe' '\uf7ff' ) ### Encoding table encoding_table = codecs.charmap_build(decoding_table) from __future__ import absolute_import, division, unicode_literals from datrie import Trie as DATrie from pip._vendor.six import text_type from ._base import Trie as ABCTrie class Trie(ABCTrie): def __init__(self, data): chars = set() for key in data.keys(): if not isinstance(key, text_type): raise TypeError("All keys must be strings") for char in key: chars.add(char) self._data = DATrie("".join(chars)) for key, value in data.items(): self._data[key] = value def __contains__(self, key): return key in self._data def __len__(self): return len(self._data) def __iter__(self): raise NotImplementedError() def __getitem__(self, key): return self._data[key] def keys(self, prefix=None): return self._data.keys(prefix) def has_keys_with_prefix(self, prefix): return self._data.has_keys_with_prefix(prefix) def longest_prefix(self, prefix): return self._data.longest_prefix(prefix) def longest_prefix_item(self, prefix): return self._data.longest_prefix_item(prefix) from __future__ import absolute_import, division, unicode_literals from pip._vendor.six import text_type from bisect import bisect_left from ._base import Trie as ABCTrie class Trie(ABCTrie): def __init__(self, data): if not all(isinstance(x, text_type) for x in data.keys()): raise TypeError("All keys must be strings") self._data = data self._keys = sorted(data.keys()) self._cachestr = "" self._cachepoints = (0, len(data)) def __contains__(self, key): return key in self._data def __len__(self): return len(self._data) def __iter__(self): return iter(self._data) def __getitem__(self, key): return self._data[key] def keys(self, prefix=None): if prefix is None or prefix == "" or not self._keys: return set(self._keys) if prefix.startswith(self._cachestr): lo, hi = self._cachepoints start = i = bisect_left(self._keys, prefix, lo, hi) else: start = i = bisect_left(self._keys, prefix) keys = set() if start == len(self._keys): return keys while self._keys[i].startswith(prefix): keys.add(self._keys[i]) i += 1 self._cachestr = prefix self._cachepoints = (start, i) return keys def has_keys_with_prefix(self, prefix): if prefix in self._data: return True if prefix.startswith(self._cachestr): lo, hi = self._cachepoints i = bisect_left(self._keys, prefix, lo, hi) else: i = bisect_left(self._keys, prefix) if i == len(self._keys): return False return self._keys[i].startswith(prefix) from __future__ import absolute_import, division, unicode_literals try: from collections.abc import Mapping except ImportError: # Python 2.7 from collections import Mapping class Trie(Mapping): """Abstract base class for tries""" def keys(self, prefix=None): # pylint:disable=arguments-differ keys = super(Trie, self).keys() if prefix is None: return set(keys) return {x for x in keys if x.startswith(prefix)} def has_keys_with_prefix(self, prefix): for key in self.keys(): if key.startswith(prefix): return True return False def longest_prefix(self, prefix): if prefix in self: return prefix for i in range(1, len(prefix) + 1): if prefix[:-i] in self: return prefix[:-i] raise KeyError(prefix) def longest_prefix_item(self, prefix): lprefix = self.longest_prefix(prefix) return (lprefix, self[lprefix]) U ��.e� � @ sL d dl mZmZmZ d dlmZ d dlmZ ddl mZ G dd� de �ZdS )� )�absolute_import�division�unicode_literals)�Trie)� text_type� c @ sV e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zdd d �Zdd� Z dd� Z dd� Z d S )r c C sj t � }|�� D ]*}t|t�s$td��|D ]}|�|� q(qtd�|��| _|� � D ]\}}|| j|< qRd S )NzAll keys must be strings� ) �set�keys� isinstancer � 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text_type� c @ sV e Zd Zdd� Zdd� Zdd� Zdd� Zd d � Zdd d �Zdd� Z dd� Z dd� Z d S )r c C sj t � }|�� D ]*}t|t�s$td��|D ]}|�|� q(qtd�|��| _|� � D ]\}}|| j|< qRd S )NzAll keys must be strings� ) �set�keys� isinstancer � TypeError�add�DATrie�join�_data�items)�self�data�chars�key�char�value� r �E/usr/lib/python3.8/site-packages/pip/_vendor/html5lib/_trie/datrie.py�__init__ s z Trie.__init__c C s || j kS �N�r �r r r r r � __contains__ s zTrie.__contains__c C s t | j�S r )�lenr �r r r r �__len__ s z Trie.__len__c C s t � �d S r )�NotImplementedErrorr r r r �__iter__ s z Trie.__iter__c C s | j | S r r r r r r � __getitem__ s zTrie.__getitem__Nc C s | j �|�S r )r r �r �prefixr r r r " s z Trie.keysc C s | j �|�S r )r �has_keys_with_prefixr% r r r r' % s zTrie.has_keys_with_prefixc C s | j �|�S r )r �longest_prefixr% r r r r( ( s zTrie.longest_prefixc C s | j �|�S r )r �longest_prefix_itemr% r r r r) + s zTrie.longest_prefix_item)N) �__name__� __module__� __qualname__r r r! r# r$ r r' r( r) r r r 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zTrie.longest_prefixc C s | � |�}|| | fS )N)r )r r Zlprefixr r r �longest_prefix_item& s zTrie.longest_prefix_item)N) �__name__� __module__� __qualname__�__doc__r r r r � __classcell__r r r r r s r N) Z __future__r r r Zcollections.abcr � ImportError� collectionsr r r r r �<module> s from __future__ import absolute_import, division, unicode_literals from .py import Trie as PyTrie Trie = PyTrie # pylint:disable=wrong-import-position try: from .datrie import Trie as DATrie except ImportError: pass else: Trie = DATrie # pylint:enable=wrong-import-position
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