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# Copyright (C) 2008, 2009 Michael Trier (mtrier@gmail.com) and contributors
#
# This module is part of GitPython and is released under the
# 3-Clause BSD License: https://opensource.org/license/bsd-3-clause/
"""Parser for reading and writing configuration files."""
__all__ = ["GitConfigParser", "SectionConstraint"]
import abc
import configparser as cp
import fnmatch
import inspect
import logging
import os
import os.path as osp
import re
import sys
from functools import wraps
from io import BufferedReader, IOBase
# typing-------------------------------------------------------
from typing import (
IO,
TYPE_CHECKING,
Any,
Callable,
Dict,
Generic,
List,
Sequence,
Tuple,
TypeVar,
Union,
cast,
)
from git.compat import defenc, force_text
from git.types import _T, ConfigLevels_Tup, Lit_config_levels, PathLike, assert_never
from git.util import LockFile
if TYPE_CHECKING:
from io import BytesIO
from git.repo.base import Repo
T_ConfigParser = TypeVar("T_ConfigParser", bound="GitConfigParser")
T_OMD_value = TypeVar("T_OMD_value", str, bytes, int, float, bool)
if sys.version_info[:3] < (3, 7, 2):
# typing.Ordereddict not added until Python 3.7.2.
from collections import OrderedDict
OrderedDict_OMD = OrderedDict
else:
from typing import OrderedDict
OrderedDict_OMD = OrderedDict[str, List[T_OMD_value]] # type: ignore[assignment, misc]
# -------------------------------------------------------------
_logger = logging.getLogger(__name__)
CONFIG_LEVELS: ConfigLevels_Tup = ("system", "user", "global", "repository")
"""The configuration level of a configuration file."""
CONDITIONAL_INCLUDE_REGEXP = re.compile(r"(?<=includeIf )\"(gitdir|gitdir/i|onbranch|hasconfig:remote\.\*\.url):(.+)\"")
"""Section pattern to detect conditional includes.
See: https://git-scm.com/docs/git-config#_conditional_includes
"""
UNSAFE_CONFIG_CHARS_RE = re.compile(r"[\r\n\x00]")
"""Characters that cannot be safely written in config names or values."""
VALID_CONFIG_OPTION_NAME_RE = re.compile(r"^[A-Za-z0-9_.-]+$")
"""Pattern for option names that can be written without changing config syntax."""
class MetaParserBuilder(abc.ABCMeta): # noqa: B024
"""Utility class wrapping base-class methods into decorators that assure read-only
properties."""
def __new__(cls, name: str, bases: Tuple, clsdict: Dict[str, Any]) -> "MetaParserBuilder":
"""Equip all base-class methods with a needs_values decorator, and all non-const
methods with a :func:`set_dirty_and_flush_changes` decorator in addition to
that.
"""
kmm = "_mutating_methods_"
if kmm in clsdict:
mutating_methods = clsdict[kmm]
for base in bases:
methods = (t for t in inspect.getmembers(base, inspect.isroutine) if not t[0].startswith("_"))
for method_name, method in methods:
if method_name in clsdict:
continue
method_with_values = needs_values(method)
if method_name in mutating_methods:
method_with_values = set_dirty_and_flush_changes(method_with_values)
# END mutating methods handling
clsdict[method_name] = method_with_values
# END for each name/method pair
# END for each base
# END if mutating methods configuration is set
new_type = super().__new__(cls, name, bases, clsdict)
return new_type
def needs_values(func: Callable[..., _T]) -> Callable[..., _T]:
"""Return a method for ensuring we read values (on demand) before we try to access
them."""
@wraps(func)
def assure_data_present(self: "GitConfigParser", *args: Any, **kwargs: Any) -> _T:
self.read()
return func(self, *args, **kwargs)
# END wrapper method
return assure_data_present
def set_dirty_and_flush_changes(non_const_func: Callable[..., _T]) -> Callable[..., _T]:
"""Return a method that checks whether given non constant function may be called.
If so, the instance will be set dirty. Additionally, we flush the changes right to
disk.
"""
def flush_changes(self: "GitConfigParser", *args: Any, **kwargs: Any) -> _T:
rval = non_const_func(self, *args, **kwargs)
self._dirty = True
self.write()
return rval
# END wrapper method
flush_changes.__name__ = non_const_func.__name__
return flush_changes
class SectionConstraint(Generic[T_ConfigParser]):
"""Constrains a ConfigParser to only option commands which are constrained to
always use the section we have been initialized with.
It supports all ConfigParser methods that operate on an option.
:note:
If used as a context manager, will release the wrapped ConfigParser.
"""
__slots__ = ("_config", "_section_name")
_valid_attrs_ = (
"get_value",
"set_value",
"get",
"set",
"getint",
"getfloat",
"getboolean",
"has_option",
"remove_section",
"remove_option",
"options",
)
def __init__(self, config: T_ConfigParser, section: str) -> None:
self._config = config
self._section_name = section
def __del__(self) -> None:
# Yes, for some reason, we have to call it explicitly for it to work in PY3 !
# Apparently __del__ doesn't get call anymore if refcount becomes 0
# Ridiculous ... .
self._config.release()
def __getattr__(self, attr: str) -> Any:
if attr in self._valid_attrs_:
return lambda *args, **kwargs: self._call_config(attr, *args, **kwargs)
return super().__getattribute__(attr)
def _call_config(self, method: str, *args: Any, **kwargs: Any) -> Any:
"""Call the configuration at the given method which must take a section name as
first argument."""
return getattr(self._config, method)(self._section_name, *args, **kwargs)
@property
def config(self) -> T_ConfigParser:
"""return: ConfigParser instance we constrain"""
return self._config
def release(self) -> None:
"""Equivalent to :meth:`GitConfigParser.release`, which is called on our
underlying parser instance."""
return self._config.release()
def __enter__(self) -> "SectionConstraint[T_ConfigParser]":
self._config.__enter__()
return self
def __exit__(self, exception_type: str, exception_value: str, traceback: str) -> None:
self._config.__exit__(exception_type, exception_value, traceback)
class _OMD(OrderedDict_OMD):
"""Ordered multi-dict."""
def __setitem__(self, key: str, value: _T) -> None:
super().__setitem__(key, [value])
def add(self, key: str, value: Any) -> None:
if key not in self:
super().__setitem__(key, [value])
return
super().__getitem__(key).append(value)
def setall(self, key: str, values: List[_T]) -> None:
super().__setitem__(key, values)
def __getitem__(self, key: str) -> Any:
return super().__getitem__(key)[-1]
def getlast(self, key: str) -> Any:
return super().__getitem__(key)[-1]
def setlast(self, key: str, value: Any) -> None:
if key not in self:
super().__setitem__(key, [value])
return
prior = super().__getitem__(key)
prior[-1] = value
def get(self, key: str, default: Union[_T, None] = None) -> Union[_T, None]:
return super().get(key, [default])[-1]
def getall(self, key: str) -> List[_T]:
return super().__getitem__(key)
def items(self) -> List[Tuple[str, _T]]: # type: ignore[override]
"""List of (key, last value for key)."""
return [(k, self[k]) for k in self]
def items_all(self) -> List[Tuple[str, List[_T]]]:
"""List of (key, list of values for key)."""
return [(k, self.getall(k)) for k in self]
def get_config_path(config_level: Lit_config_levels) -> str:
# We do not support an absolute path of the gitconfig on Windows.
# Use the global config instead.
if sys.platform == "win32" and config_level == "system":
config_level = "global"
if config_level == "system":
return "/etc/gitconfig"
elif config_level == "user":
config_home = os.environ.get("XDG_CONFIG_HOME") or osp.join(os.environ.get("HOME", "~"), ".config")
return osp.normpath(osp.expanduser(osp.join(config_home, "git", "config")))
elif config_level == "global":
return osp.normpath(osp.expanduser("~/.gitconfig"))
elif config_level == "repository":
raise ValueError("No repo to get repository configuration from. Use Repo._get_config_path")
else:
# Should not reach here. Will raise ValueError if does. Static typing will warn
# about missing elifs.
assert_never( # type: ignore[unreachable]
config_level,
ValueError(f"Invalid configuration level: {config_level!r}"),
)
class GitConfigParser(cp.RawConfigParser, metaclass=MetaParserBuilder):
"""Implements specifics required to read git style configuration files.
This variation behaves much like the :manpage:`git-config(1)` command, such that the
configuration will be read on demand based on the filepath given during
initialization.
The changes will automatically be written once the instance goes out of scope, but
can be triggered manually as well.
The configuration file will be locked if you intend to change values preventing
other instances to write concurrently.
:note:
The config is case-sensitive even when queried, hence section and option names
must match perfectly.
:note:
If used as a context manager, this will release the locked file.
"""
# { Configuration
t_lock = LockFile
"""The lock type determines the type of lock to use in new configuration readers.
They must be compatible to the :class:`~git.util.LockFile` interface.
A suitable alternative would be the :class:`~git.util.BlockingLockFile`.
"""
re_comment = re.compile(r"^\s*[#;]")
# } END configuration
optvalueonly_source = r"\s*(?P<option>[^:=\s][^:=]*)"
OPTVALUEONLY = re.compile(optvalueonly_source)
OPTCRE = re.compile(optvalueonly_source + r"\s*(?P<vi>[:=])\s*" + r"(?P<value>.*)$")
del optvalueonly_source
_mutating_methods_ = ("add_section", "remove_section", "remove_option", "set")
"""Names of :class:`~configparser.RawConfigParser` methods able to change the
instance."""
def __init__(
self,
file_or_files: Union[None, PathLike, "BytesIO", Sequence[Union[PathLike, "BytesIO"]]] = None,
read_only: bool = True,
merge_includes: bool = True,
config_level: Union[Lit_config_levels, None] = None,
repo: Union["Repo", None] = None,
) -> None:
"""Initialize a configuration reader to read the given `file_or_files` and to
possibly allow changes to it by setting `read_only` False.
:param file_or_files:
A file path or file object, or a sequence of possibly more than one of them.
:param read_only:
If ``True``, the ConfigParser may only read the data, but not change it.
If ``False``, only a single file path or file object may be given. We will
write back the changes when they happen, or when the ConfigParser is
released. This will not happen if other configuration files have been
included.
:param merge_includes:
If ``True``, we will read files mentioned in ``[include]`` sections and
merge their contents into ours. This makes it impossible to write back an
individual configuration file. Thus, if you want to modify a single
configuration file, turn this off to leave the original dataset unaltered
when reading it.
:param repo:
Reference to repository to use if ``[includeIf]`` sections are found in
configuration files.
"""
cp.RawConfigParser.__init__(self, dict_type=_OMD)
self._dict: Callable[..., _OMD]
self._defaults: _OMD
self._sections: _OMD
# Used in Python 3. Needs to stay in sync with sections for underlying
# implementation to work.
if not hasattr(self, "_proxies"):
self._proxies = self._dict()
if file_or_files is not None:
self._file_or_files: Union[PathLike, "BytesIO", Sequence[Union[PathLike, "BytesIO"]]] = file_or_files
else:
if config_level is None:
if read_only:
self._file_or_files = [
get_config_path(cast(Lit_config_levels, f)) for f in CONFIG_LEVELS if f != "repository"
]
else:
raise ValueError("No configuration level or configuration files specified")
else:
self._file_or_files = [get_config_path(config_level)]
self._read_only = read_only
self._dirty = False
self._is_initialized = False
self._merge_includes = merge_includes
self._repo = repo
self._lock: Union["LockFile", None] = None
self._acquire_lock()
def _acquire_lock(self) -> None:
if not self._read_only:
if not self._lock:
if isinstance(self._file_or_files, (str, os.PathLike)):
file_or_files = self._file_or_files
elif isinstance(self._file_or_files, (tuple, list, Sequence)):
raise ValueError(
"Write-ConfigParsers can operate on a single file only, multiple files have been passed"
)
else:
file_or_files = self._file_or_files.name
# END get filename from handle/stream
# Initialize lock base - we want to write.
self._lock = self.t_lock(file_or_files)
# END lock check
self._lock._obtain_lock()
# END read-only check
def __del__(self) -> None:
"""Write pending changes if required and release locks."""
# NOTE: Only consistent in Python 2.
self.release()
def __enter__(self) -> "GitConfigParser":
self._acquire_lock()
return self
def __exit__(self, *args: Any) -> None:
self.release()
def release(self) -> None:
"""Flush changes and release the configuration write lock. This instance must
not be used anymore afterwards.
In Python 3, it's required to explicitly release locks and flush changes, as
``__del__`` is not called deterministically anymore.
"""
# Checking for the lock here makes sure we do not raise during write()
# in case an invalid parser was created who could not get a lock.
if self.read_only or (self._lock and not self._lock._has_lock()):
return
try:
self.write()
except IOError:
_logger.error("Exception during destruction of GitConfigParser", exc_info=True)
except ReferenceError:
# This happens in Python 3... and usually means that some state cannot be
# written as the sections dict cannot be iterated. This usually happens when
# the interpreter is shutting down. Can it be fixed?
pass
finally:
if self._lock is not None:
self._lock._release_lock()
def optionxform(self, optionstr: str) -> str:
"""Do not transform options in any way when writing."""
return optionstr
def _read(self, fp: Union[BufferedReader, IO[bytes]], fpname: str) -> None:
"""Originally a direct copy of the Python 2.4 version of
:meth:`RawConfigParser._read <configparser.RawConfigParser._read>`, to ensure it
uses ordered dicts.
The ordering bug was fixed in Python 2.4, and dict itself keeps ordering since
Python 3.7. This has some other changes, especially that it ignores initial
whitespace, since git uses tabs. (Big comments are removed to be more compact.)
"""
cursect = None # None, or a dictionary.
optname = None
lineno = 0
is_multi_line = False
e = None # None, or an exception.
def string_decode(v: str) -> str:
if v and v.endswith("\\"):
v = v[:-1]
# END cut trailing escapes to prevent decode error
escapes = {"b": "\b", "n": "\n", "r": "\r", "t": "\t", '"': '"', "\\": "\\"}
return re.sub(r"\\(.)", lambda match: escapes.get(match.group(1), match.group(0)), v)
# END string_decode
def is_line_continuation(value: str) -> bool:
quoted = escaped = False
for char in value:
if escaped:
escaped = False
elif char == "\\":
escaped = True
elif char == '"':
quoted = not quoted
elif char in "#;" and not quoted:
return False
return escaped
def parse_value(value: str) -> str:
parsed: List[str] = []
whitespace: List[str] = []
quoted = escaped = False
escapes = {"b": "\b", "n": "\n", "t": "\t", '"': '"', "\\": "\\"}
for char in value:
if escaped:
parsed.append(escapes.get(char, "\\" + char))
escaped = False
continue
if char.isspace() and not quoted:
if parsed:
whitespace.append(char)
continue
if char in "#;" and not quoted:
break
parsed.extend(whitespace)
whitespace.clear()
if char == "\\":
escaped = True
elif char == '"':
quoted = not quoted
else:
parsed.append(char)
return "".join(parsed)
while True:
# We assume to read binary!
line = fp.readline().decode(defenc)
if not line:
break
lineno = lineno + 1
# Comment or blank line?
if line.strip() == "" or self.re_comment.match(line):
continue
if line.split(None, 1)[0].lower() == "rem" and line[0] in "rR":
# No leading whitespace.
continue
# Is it a section header?
mo = self.SECTCRE.match(line.strip())
if not is_multi_line and mo:
sectname: str = mo.group("header").strip()
if sectname in self._sections:
cursect = self._sections[sectname]
elif sectname == cp.DEFAULTSECT:
cursect = self._defaults
else:
cursect = self._dict((("__name__", sectname),))
self._sections[sectname] = cursect
self._proxies[sectname] = None
# So sections can't start with a continuation line.
optname = None
# No section header in the file?
elif cursect is None:
raise cp.MissingSectionHeaderError(fpname, lineno, line)
# An option line?
elif not is_multi_line:
mo = self.OPTCRE.match(line)
if mo:
# We might just have handled the last line, which could contain a quotation we want to remove.
optname, vi, optval = mo.group("option", "vi", "value")
optname = self.optionxform(optname.rstrip())
if vi in ("=", ":") and ";" in optval and not optval.strip().startswith('"'):
pos = optval.find(";")
if pos != -1 and optval[pos - 1].isspace():
optval = optval[:pos]
optval = optval.strip()
if len(optval) < 2 or optval[0] != '"':
# Does not open quoting.
# A value ending in an odd number of backslashes
# continues on the next line, exactly as git does: the
# final backslash and the newline are removed and the
# next line is appended before the complete value is
# parsed. An even number means the last backslash is
# escaped and the value ends there.
continued = False
while True:
if not is_line_continuation(optval):
break
continuation = fp.readline()
if not continuation:
# Backslash at end of file: git drops it.
optval = optval[:-1]
break
lineno = lineno + 1
joined = continuation.decode(defenc)
while joined.endswith("\n") or joined.endswith("\r"):
joined = joined[:-1]
optval = optval[:-1] + joined
continued = True
if continued:
optval = parse_value(optval)
elif optval[-1] != '"':
# Opens quoting and does not close: appears to start multi-line quoting.
is_multi_line = True
optval = string_decode(optval[1:])
elif re.search(r'(?:^|[^\\])(?:\\\\)*"', optval[1:-1]):
# Preserve malformed values containing unescaped quotes.
pass
else:
# Opens and closes quoting.
optval = string_decode(optval[1:-1])
# Preserves multiple values for duplicate optnames.
cursect.add(optname, optval)
else:
# Check if it's an option with no value - it's just ignored by git.
if not self.OPTVALUEONLY.match(line):
if not e:
e = cp.ParsingError(fpname)
e.append(lineno, repr(line))
continue
else:
line = line.rstrip()
if line.endswith('"'):
is_multi_line = False
line = line[:-1]
# END handle quotations
optval = cursect.getlast(optname)
cursect.setlast(optname, optval + string_decode(line))
# END parse section or option
# END while reading
# If any parsing errors occurred, raise an exception.
if e:
raise e
def _has_includes(self) -> Union[bool, int]:
return self._merge_includes and len(self._included_paths())
def _included_paths(self) -> List[Tuple[str, str]]:
"""List all paths that must be included to configuration.
:return:
The list of paths, where each path is a tuple of (option, value).
"""
def _all_items(section: str) -> List[Tuple[str, str]]:
"""Return all (key, value) pairs for a section, including duplicate keys."""
return [
(key, value)
for key, values in self._sections[section].items_all()
if key != "__name__"
for value in values
]
paths = []
for section in self.sections():
if section == "include":
paths += _all_items(section)
match = CONDITIONAL_INCLUDE_REGEXP.search(section)
if match is None or self._repo is None:
continue
keyword = match.group(1)
value = match.group(2).strip()
if keyword in ["gitdir", "gitdir/i"]:
value = osp.expanduser(value)
git_dir = os.fspath(self._repo.git_dir) if self._repo.git_dir else None
if sys.platform == "win32":
git_dir = git_dir.replace("\\", "/") if git_dir else None
drive, _tail = osp.splitdrive(value)
if not drive and not any(value.startswith(s) for s in ["./", "/"]):
value = "**/" + value
if value.endswith("/"):
value += "**"
# Ensure that glob is always case insensitive if required.
if keyword.endswith("/i"):
value = re.sub(
r"[a-zA-Z]",
lambda m: f"[{m.group().lower()!r}{m.group().upper()!r}]",
value,
)
if git_dir and fnmatch.fnmatchcase(git_dir, value):
paths += _all_items(section)
elif keyword == "onbranch":
try:
branch_name = self._repo.active_branch.name
except TypeError:
# Ignore section if active branch cannot be retrieved.
continue
if fnmatch.fnmatchcase(branch_name, value):
paths += _all_items(section)
elif keyword == "hasconfig:remote.*.url":
for remote in self._repo.remotes:
if fnmatch.fnmatchcase(remote.url, value):
paths += _all_items(section)
break
return paths
def read(self) -> None: # type: ignore[override]
"""Read the data stored in the files we have been initialized with.
This will ignore files that cannot be read, possibly leaving an empty
configuration.
:raise IOError:
If a file cannot be handled.
"""
if self._is_initialized:
return
self._is_initialized = True
files_to_read: List[Union[PathLike, IO]] = [""]
if isinstance(self._file_or_files, (str, os.PathLike)):
# For str or Path, as str is a type of Sequence.
files_to_read = [self._file_or_files]
elif not isinstance(self._file_or_files, (tuple, list, Sequence)):
# Could merge with above isinstance once runtime type known.
files_to_read = [self._file_or_files]
else: # For lists or tuples.
files_to_read = list(self._file_or_files)
# END ensure we have a copy of the paths to handle
files_to_read = [osp.abspath(path) if isinstance(path, (str, os.PathLike)) else path for path in files_to_read]
seen = set(files_to_read)
num_read_include_files = 0
while files_to_read:
file_path = files_to_read.pop(0)
file_ok = False
if hasattr(file_path, "seek"):
# Must be a file-object.
# TODO: Replace cast with assert to narrow type, once sure.
file_path = cast(IO[bytes], file_path)
self._read(file_path, file_path.name)
else:
try:
with open(file_path, "rb") as fp:
file_ok = True
self._read(fp, fp.name)
except IOError:
continue
# Read includes and append those that we didn't handle yet. We expect all
# paths to be normalized and absolute (and will ensure that is the case).
if self._has_includes():
for _, include_path in self._included_paths():
if include_path.startswith("~"):
include_path = osp.expanduser(include_path)
if not osp.isabs(include_path):
if not file_ok:
continue
# END ignore relative paths if we don't know the configuration file path
file_path = cast(PathLike, file_path)
assert osp.isabs(file_path), "Need absolute paths to be sure our cycle checks will work"
include_path = osp.join(osp.dirname(file_path), include_path)
# END make include path absolute
include_path = osp.normpath(include_path)
if include_path in seen or not os.access(include_path, os.R_OK):
continue
seen.add(include_path)
# Insert included file to the top to be considered first.
files_to_read.insert(0, include_path)
num_read_include_files += 1
# END each include path in configuration file
# END handle includes
# END for each file object to read
# If there was no file included, we can safely write back (potentially) the
# configuration file without altering its meaning.
if num_read_include_files == 0:
self._merge_includes = False
def _write(self, fp: IO) -> None:
"""Write an .ini-format representation of the configuration state in
git compatible format."""
def write_section(name: str, section_dict: _OMD) -> None:
fp.write(("[%s]\n" % name).encode(defenc))
values: Sequence[str] # Runtime only gets str in tests, but should be whatever _OMD stores.
v: str
for key, values in section_dict.items_all():
if key == "__name__":
continue
for v in values:
value = self._value_to_string(v)
if any(char in value for char in '\n\t\b\\"#;') or value[:1].isspace() or value[-1:].isspace():
value = value.replace("\\", "\\\\").replace('"', '\\"')
value = '"%s\\\n"' % value.replace("\n", "\\n").replace("\t", "\\t").replace("\b", "\\b")
fp.write(("\t%s = %s\n" % (key, value)).encode(defenc))
# END if key is not __name__
# END section writing
if self._defaults:
write_section(cp.DEFAULTSECT, self._defaults)
value: _OMD
for name, value in self._sections.items():
write_section(name, value)
def items(self, section_name: str) -> List[Tuple[str, str]]: # type: ignore[override]
""":return: list((option, value), ...) pairs of all items in the given section"""
return [(k, v) for k, v in super().items(section_name) if k != "__name__"]
def items_all(self, section_name: str) -> List[Tuple[str, List[str]]]:
""":return: list((option, [values...]), ...) pairs of all items in the given section"""
rv = _OMD(self._defaults)
for k, vs in self._sections[section_name].items_all():
if k == "__name__":
continue
if k in rv and rv.getall(k) == vs:
continue
for v in vs:
rv.add(k, v)
return rv.items_all()
@needs_values
def write(self) -> None:
"""Write changes to our file, if there are changes at all.
:raise IOError:
If this is a read-only writer instance or if we could not obtain a file
lock.
"""
self._assure_writable("write")
if not self._dirty:
return
if isinstance(self._file_or_files, (list, tuple)):
raise AssertionError(
"Cannot write back if there is not exactly a single file to write to, have %i files"
% len(self._file_or_files)
)
# END assert multiple files
if self._has_includes():
_logger.debug(
"Skipping write-back of configuration file as include files were merged in."
+ "Set merge_includes=False to prevent this."
)
return
# END stop if we have include files
sections: List[_OMD] = [self._defaults]
section: _OMD
stored_section: _OMD
values: List[Any]
raw_value: Any
for _, stored_section in self._sections.items():
sections.append(stored_section)
for section in sections:
for key, values in section.items_all():
if key != "__name__":
for raw_value in values:
if "\r" in self._value_to_string(raw_value) or "\x00" in self._value_to_string(raw_value):
raise ValueError("Git config values must not contain CR or NUL")
fp = self._file_or_files
# We have a physical file on disk, so get a lock.
is_file_lock = isinstance(fp, (str, os.PathLike, IOBase)) # TODO: Use PathLike (having dropped 3.5).
if is_file_lock and self._lock is not None: # Else raise error?
self._lock._obtain_lock()
if not hasattr(fp, "seek"):
fp = cast(PathLike, fp)
with open(fp, "wb") as fp_open:
self._write(fp_open)
else:
fp = cast("BytesIO", fp)
fp.seek(0)
# Make sure we do not overwrite into an existing file.
if hasattr(fp, "truncate"):
fp.truncate()
self._write(fp)
def _assure_writable(self, method_name: str) -> None:
if self.read_only:
raise IOError("Cannot execute non-constant method %s.%s" % (self, method_name))
def add_section(self, section: "cp._SectionName") -> None:
"""Assures added options will stay in order."""
self._assure_config_name_safe(section, "section")
return super().add_section(section)
@property
def read_only(self) -> bool:
""":return: ``True`` if this instance may change the configuration file"""
return self._read_only
# FIXME: Figure out if default or return type can really include bool.
def get_value(
self,
section: str,
option: str,
default: Union[int, float, str, bool, None] = None,
) -> Union[int, float, str, bool]:
"""Get an option's value.
If multiple values are specified for this option in the section, the last one
specified is returned.
:param default:
If not ``None``, the given default value will be returned in case the option
did not exist.
:return:
A properly typed value, either int, float or string
:raise TypeError:
In case the value could not be understood.
Otherwise the exceptions known to the ConfigParser will be raised.
"""
try:
valuestr = self.get(section, option)
except Exception:
if default is not None:
return default
raise
return self._string_to_value(valuestr)
def get_values(
self,
section: str,
option: str,
default: Union[int, float, str, bool, None] = None,
) -> List[Union[int, float, str, bool]]:
"""Get an option's values.
If multiple values are specified for this option in the section, all are
returned.
:param default:
If not ``None``, a list containing the given default value will be returned
in case the option did not exist.
:return:
A list of properly typed values, either int, float or string
:raise TypeError:
In case the value could not be understood.
Otherwise the exceptions known to the ConfigParser will be raised.
"""
try:
self.sections()
lst = self._sections[section].getall(option)
except Exception:
if default is not None:
return [default]
raise
return [self._string_to_value(valuestr) for valuestr in lst]
def _string_to_value(self, valuestr: str) -> Union[int, float, str, bool]:
types = (int, float)
for numtype in types:
try:
val = numtype(valuestr)
# truncated value ?
if val != float(valuestr):
continue
return val
except (ValueError, TypeError):
continue
# END for each numeric type
# Try boolean values as git uses them.
vl = valuestr.lower()
if vl in ("false", "no", "off"):
return False
if vl in ("true", "yes", "on"):
return True
if not isinstance(valuestr, str):
raise TypeError(
"Invalid value type: only int, long, float and str are allowed",
valuestr,
)
return valuestr
def _value_to_string(self, value: Union[str, bytes, int, float, bool]) -> str:
if isinstance(value, (int, float, bool)):
return str(value)
return force_text(value)
def _value_to_string_safe(self, value: Union[str, bytes, int, float, bool]) -> str:
value_str = self._value_to_string(value)
if UNSAFE_CONFIG_CHARS_RE.search(value_str):
raise ValueError("Git config values must not contain CR, LF, or NUL")
return value_str
def _assure_config_name_safe(self, name: "cp._SectionName", label: str) -> None:
if isinstance(name, str) and UNSAFE_CONFIG_CHARS_RE.search(name):
raise ValueError("Git config %s names must not contain CR, LF, or NUL" % label)
if label == "option" and isinstance(name, str) and not VALID_CONFIG_OPTION_NAME_RE.fullmatch(name):
raise ValueError("Git config option names may contain only letters, digits, '-', '_', or '.'")
if label == "section" and isinstance(name, str):
in_quotes = False
escaped = False
for index, char in enumerate(name):
if escaped:
escaped = False
elif in_quotes and char == "\\":
escaped = True
elif char == '"':
if not in_quotes and (index == 0 or name[index - 1] not in " \t"):
raise ValueError("Git config quoted subsection names must begin after whitespace")
in_quotes = not in_quotes
elif char == "]" and not in_quotes:
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