Current Dir: /snap/core22/2955/usr/lib/python3.10/
[DIR] asyncio [ delete | rename ]
[DIR] collections [ delete | rename ]
[DIR] concurrent [ delete | rename ]
[DIR] ctypes [ delete | rename ]
[DIR] curses [ delete | rename ]
[DIR] dbm [ delete | rename ]
[DIR] distutils [ delete | rename ]
[DIR] email [ delete | rename ]
[DIR] encodings [ delete | rename ]
[DIR] html [ delete | rename ]
[DIR] http [ delete | rename ]
[DIR] importlib [ delete | rename ]
[DIR] json [ delete | rename ]
[DIR] lib-dynload [ delete | rename ]
[DIR] lib2to3 [ delete | rename ]
[DIR] logging [ delete | rename ]
[DIR] multiprocessing [ delete | rename ]
[DIR] pydoc_data [ delete | rename ]
[DIR] sqlite3 [ delete | rename ]
[DIR] test [ delete | rename ]
[DIR] unittest [ delete | rename ]
[DIR] urllib [ delete | rename ]
[DIR] venv [ delete | rename ]
[DIR] wsgiref [ delete | rename ]
[DIR] xml [ delete | rename ]
[DIR] xmlrpc [ delete | rename ]
[DIR] zoneinfo [ delete | rename ]
[DIR] __pycache__ [ delete | rename ]
[FILE] abc.py [ edit | delete | rename ]
[FILE] aifc.py [ edit | delete | rename ]
[FILE] antigravity.py [ edit | delete | rename ]
[FILE] argparse.py [ edit | delete | rename ]
[FILE] ast.py [ edit | delete | rename ]
[FILE] asynchat.py [ edit | delete | rename ]
[FILE] asyncore.py [ edit | delete | rename ]
[FILE] base64.py [ edit | delete | rename ]
[FILE] bdb.py [ edit | delete | rename ]
[FILE] binhex.py [ edit | delete | rename ]
[FILE] bisect.py [ edit | delete | rename ]
[FILE] bz2.py [ edit | delete | rename ]
[FILE] calendar.py [ edit | delete | rename ]
[FILE] cgi.py [ edit | delete | rename ]
[FILE] cgitb.py [ edit | delete | rename ]
[FILE] chunk.py [ edit | delete | rename ]
[FILE] cmd.py [ edit | delete | rename ]
[FILE] code.py [ edit | delete | rename ]
[FILE] codecs.py [ edit | delete | rename ]
[FILE] codeop.py [ edit | delete | rename ]
[FILE] colorsys.py [ edit | delete | rename ]
[FILE] compileall.py [ edit | delete | rename ]
[FILE] configparser.py [ edit | delete | rename ]
[FILE] contextlib.py [ edit | delete | rename ]
[FILE] contextvars.py [ edit | delete | rename ]
[FILE] copy.py [ edit | delete | rename ]
[FILE] copyreg.py [ edit | delete | rename ]
[FILE] cProfile.py [ edit | delete | rename ]
[FILE] crypt.py [ edit | delete | rename ]
[FILE] csv.py [ edit | delete | rename ]
[FILE] dataclasses.py [ edit | delete | rename ]
[FILE] datetime.py [ edit | delete | rename ]
[FILE] decimal.py [ edit | delete | rename ]
[FILE] difflib.py [ edit | delete | rename ]
[FILE] dis.py [ edit | delete | rename ]
[FILE] doctest.py [ edit | delete | rename ]
[FILE] enum.py [ edit | delete | rename ]
[FILE] filecmp.py [ edit | delete | rename ]
[FILE] fileinput.py [ edit | delete | rename ]
[FILE] fnmatch.py [ edit | delete | rename ]
[FILE] fractions.py [ edit | delete | rename ]
[FILE] ftplib.py [ edit | delete | rename ]
[FILE] functools.py [ edit | delete | rename ]
[FILE] genericpath.py [ edit | delete | rename ]
[FILE] getopt.py [ edit | delete | rename ]
[FILE] getpass.py [ edit | delete | rename ]
[FILE] gettext.py [ edit | delete | rename ]
[FILE] glob.py [ edit | delete | rename ]
[FILE] graphlib.py [ edit | delete | rename ]
[FILE] gzip.py [ edit | delete | rename ]
[FILE] hashlib.py [ edit | delete | rename ]
[FILE] heapq.py [ edit | delete | rename ]
[FILE] hmac.py [ edit | delete | rename ]
[FILE] imaplib.py [ edit | delete | rename ]
[FILE] imghdr.py [ edit | delete | rename ]
[FILE] imp.py [ edit | delete | rename ]
[FILE] inspect.py [ edit | delete | rename ]
[FILE] io.py [ edit | delete | rename ]
[FILE] ipaddress.py [ edit | delete | rename ]
[FILE] keyword.py [ edit | delete | rename ]
[FILE] LICENSE.txt [ edit | delete | rename ]
[FILE] linecache.py [ edit | delete | rename ]
[FILE] locale.py [ edit | delete | rename ]
[FILE] lzma.py [ edit | delete | rename ]
[FILE] mailbox.py [ edit | delete | rename ]
[FILE] mailcap.py [ edit | delete | rename ]
[FILE] mimetypes.py [ edit | delete | rename ]
[FILE] modulefinder.py [ edit | delete | rename ]
[FILE] netrc.py [ edit | delete | rename ]
[FILE] nntplib.py [ edit | delete | rename ]
[FILE] ntpath.py [ edit | delete | rename ]
[FILE] nturl2path.py [ edit | delete | rename ]
[FILE] numbers.py [ edit | delete | rename ]
[FILE] opcode.py [ edit | delete | rename ]
[FILE] operator.py [ edit | delete | rename ]
[FILE] optparse.py [ edit | delete | rename ]
[FILE] os.py [ edit | delete | rename ]
[FILE] pathlib.py [ edit | delete | rename ]
[FILE] pdb.py [ edit | delete | rename ]
[FILE] pickle.py [ edit | delete | rename ]
[FILE] pickletools.py [ edit | delete | rename ]
[FILE] pipes.py [ edit | delete | rename ]
[FILE] pkgutil.py [ edit | delete | rename ]
[FILE] platform.py [ edit | delete | rename ]
[FILE] plistlib.py [ edit | delete | rename ]
[FILE] poplib.py [ edit | delete | rename ]
[FILE] posixpath.py [ edit | delete | rename ]
[FILE] pprint.py [ edit | delete | rename ]
[FILE] profile.py [ edit | delete | rename ]
[FILE] pstats.py [ edit | delete | rename ]
[FILE] pty.py [ edit | delete | rename ]
[FILE] pyclbr.py [ edit | delete | rename ]
[FILE] pydoc.py [ edit | delete | rename ]
[FILE] py_compile.py [ edit | delete | rename ]
[FILE] queue.py [ edit | delete | rename ]
[FILE] quopri.py [ edit | delete | rename ]
[FILE] random.py [ edit | delete | rename ]
[FILE] re.py [ edit | delete | rename ]
[FILE] reprlib.py [ edit | delete | rename ]
[FILE] rlcompleter.py [ edit | delete | rename ]
[FILE] runpy.py [ edit | delete | rename ]
[FILE] sched.py [ edit | delete | rename ]
[FILE] secrets.py [ edit | delete | rename ]
[FILE] selectors.py [ edit | delete | rename ]
[FILE] shelve.py [ edit | delete | rename ]
[FILE] shlex.py [ edit | delete | rename ]
[FILE] shutil.py [ edit | delete | rename ]
[FILE] signal.py [ edit | delete | rename ]
[FILE] site.py [ edit | delete | rename ]
[FILE] sitecustomize.py [ edit | delete | rename ]
[FILE] smtpd.py [ edit | delete | rename ]
[FILE] smtplib.py [ edit | delete | rename ]
[FILE] sndhdr.py [ edit | delete | rename ]
[FILE] socket.py [ edit | delete | rename ]
[FILE] socketserver.py [ edit | delete | rename ]
[FILE] sre_compile.py [ edit | delete | rename ]
[FILE] sre_constants.py [ edit | delete | rename ]
[FILE] sre_parse.py [ edit | delete | rename ]
[FILE] ssl.py [ edit | delete | rename ]
[FILE] stat.py [ edit | delete | rename ]
[FILE] statistics.py [ edit | delete | rename ]
[FILE] string.py [ edit | delete | rename ]
[FILE] stringprep.py [ edit | delete | rename ]
[FILE] struct.py [ edit | delete | rename ]
[FILE] subprocess.py [ edit | delete | rename ]
[FILE] sunau.py [ edit | delete | rename ]
[FILE] symtable.py [ edit | delete | rename ]
[FILE] sysconfig.py [ edit | delete | rename ]
[FILE] tabnanny.py [ edit | delete | rename ]
[FILE] tarfile.py [ edit | delete | rename ]
[FILE] telnetlib.py [ edit | delete | rename ]
[FILE] tempfile.py [ edit | delete | rename ]
[FILE] textwrap.py [ edit | delete | rename ]
[FILE] this.py [ edit | delete | rename ]
[FILE] threading.py [ edit | delete | rename ]
[FILE] timeit.py [ edit | delete | rename ]
[FILE] token.py [ edit | delete | rename ]
[FILE] tokenize.py [ edit | delete | rename ]
[FILE] trace.py [ edit | delete | rename ]
[FILE] traceback.py [ edit | delete | rename ]
[FILE] tracemalloc.py [ edit | delete | rename ]
[FILE] tty.py [ edit | delete | rename ]
[FILE] turtle.py [ edit | delete | rename ]
[FILE] types.py [ edit | delete | rename ]
[FILE] typing.py [ edit | delete | rename ]
[FILE] uu.py [ edit | delete | rename ]
[FILE] uuid.py [ edit | delete | rename ]
[FILE] warnings.py [ edit | delete | rename ]
[FILE] wave.py [ edit | delete | rename ]
[FILE] weakref.py [ edit | delete | rename ]
[FILE] webbrowser.py [ edit | delete | rename ]
[FILE] xdrlib.py [ edit | delete | rename ]
[FILE] zipapp.py [ edit | delete | rename ]
[FILE] zipfile.py [ edit | delete | rename ]
[FILE] zipimport.py [ edit | delete | rename ]
[FILE] _aix_support.py [ edit | delete | rename ]
[FILE] _bootsubprocess.py [ edit | delete | rename ]
[FILE] _collections_abc.py [ edit | delete | rename ]
[FILE] _compat_pickle.py [ edit | delete | rename ]
[FILE] _compression.py [ edit | delete | rename ]
[FILE] _distutils_system_mod.py [ edit | delete | rename ]
[FILE] _markupbase.py [ edit | delete | rename ]
[FILE] _osx_support.py [ edit | delete | rename ]
[FILE] _pydecimal.py [ edit | delete | rename ]
[FILE] _pyio.py [ edit | delete | rename ]
[FILE] _py_abc.py [ edit | delete | rename ]
[FILE] _sitebuiltins.py [ edit | delete | rename ]
[FILE] _strptime.py [ edit | delete | rename ]
[FILE] _sysconfigdata__linux_x86_64-linux-gnu.py [ edit | delete | rename ]
[FILE] _sysconfigdata__x86_64-linux-gnu.py [ edit | delete | rename ]
[FILE] _threading_local.py [ edit | delete | rename ]
[FILE] _weakrefset.py [ edit | delete | rename ]
[FILE] __future__.py [ edit | delete | rename ]
[FILE] __phello__.foo.py [ edit | delete | rename ]
Viewing: /snap/core22/2955/usr/lib/python3.10/linecache.py
"""Cache lines from Python source files.
This is intended to read lines from modules imported -- hence if a filename
is not found, it will look down the module search path for a file by
that name.
"""
import functools
import sys
import os
import tokenize
__all__ = ["getline", "clearcache", "checkcache", "lazycache"]
# The cache. Maps filenames to either a thunk which will provide source code,
# or a tuple (size, mtime, lines, fullname) once loaded.
cache = {}
def clearcache():
"""Clear the cache entirely."""
cache.clear()
def getline(filename, lineno, module_globals=None):
"""Get a line for a Python source file from the cache.
Update the cache if it doesn't contain an entry for this file already."""
lines = getlines(filename, module_globals)
if 1 <= lineno <= len(lines):
return lines[lineno - 1]
return ''
def getlines(filename, module_globals=None):
"""Get the lines for a Python source file from the cache.
Update the cache if it doesn't contain an entry for this file already."""
if filename in cache:
entry = cache[filename]
if len(entry) != 1:
return cache[filename][2]
try:
return updatecache(filename, module_globals)
except MemoryError:
clearcache()
return []
def checkcache(filename=None):
"""Discard cache entries that are out of date.
(This is not checked upon each call!)"""
if filename is None:
filenames = list(cache.keys())
elif filename in cache:
filenames = [filename]
else:
return
for filename in filenames:
entry = cache[filename]
if len(entry) == 1:
# lazy cache entry, leave it lazy.
continue
size, mtime, lines, fullname = entry
if mtime is None:
continue # no-op for files loaded via a __loader__
try:
stat = os.stat(fullname)
except OSError:
cache.pop(filename, None)
continue
if size != stat.st_size or mtime != stat.st_mtime:
cache.pop(filename, None)
def updatecache(filename, module_globals=None):
"""Update a cache entry and return its list of lines.
If something's wrong, print a message, discard the cache entry,
and return an empty list."""
if filename in cache:
if len(cache[filename]) != 1:
cache.pop(filename, None)
if not filename or (filename.startswith('<') and filename.endswith('>')):
return []
fullname = filename
try:
stat = os.stat(fullname)
except OSError:
basename = filename
# Realise a lazy loader based lookup if there is one
# otherwise try to lookup right now.
if lazycache(filename, module_globals):
try:
data = cache[filename][0]()
except (ImportError, OSError):
pass
else:
if data is None:
# No luck, the PEP302 loader cannot find the source
# for this module.
return []
cache[filename] = (
len(data),
None,
[line + '\n' for line in data.splitlines()],
fullname
)
return cache[filename][2]
# Try looking through the module search path, which is only useful
# when handling a relative filename.
if os.path.isabs(filename):
return []
for dirname in sys.path:
try:
fullname = os.path.join(dirname, basename)
except (TypeError, AttributeError):
# Not sufficiently string-like to do anything useful with.
continue
try:
stat = os.stat(fullname)
break
except OSError:
pass
else:
return []
try:
with tokenize.open(fullname) as fp:
lines = fp.readlines()
except (OSError, UnicodeDecodeError, SyntaxError):
return []
if lines and not lines[-1].endswith('\n'):
lines[-1] += '\n'
size, mtime = stat.st_size, stat.st_mtime
cache[filename] = size, mtime, lines, fullname
return lines
def lazycache(filename, module_globals):
"""Seed the cache for filename with module_globals.
The module loader will be asked for the source only when getlines is
called, not immediately.
If there is an entry in the cache already, it is not altered.
:return: True if a lazy load is registered in the cache,
otherwise False. To register such a load a module loader with a
get_source method must be found, the filename must be a cacheable
filename, and the filename must not be already cached.
"""
if filename in cache:
if len(cache[filename]) == 1:
return True
else:
return False
if not filename or (filename.startswith('<') and filename.endswith('>')):
return False
# Try for a __loader__, if available
if module_globals and '__name__' in module_globals:
name = module_globals['__name__']
if (loader := module_globals.get('__loader__')) is None:
if spec := module_globals.get('__spec__'):
try:
loader = spec.loader
except AttributeError:
pass
get_source = getattr(loader, 'get_source', None)
if name and get_source:
get_lines = functools.partial(get_source, name)
cache[filename] = (get_lines,)
return True
return False