mirror of
https://gerrit.googlesource.com/git-repo
synced 2024-12-21 07:16:21 +00:00
ae824fb2fc
In Python 3, these exceptions were merged into OSError, so switch everything over to that. Change-Id: If876a28b692de5aa5c62a3bdc8c000793ce52c63 Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/390376 Reviewed-by: Aravind Vasudevan <aravindvasudev@google.com> Commit-Queue: Mike Frysinger <vapier@google.com> Tested-by: Mike Frysinger <vapier@google.com>
847 lines
26 KiB
Python
847 lines
26 KiB
Python
# Copyright (C) 2008 The Android Open Source Project
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import contextlib
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import datetime
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import errno
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import http.client
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import json
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import os
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import re
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import ssl
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import subprocess
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import sys
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from typing import Union
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import urllib.error
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import urllib.request
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from error import GitError
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from error import UploadError
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from git_command import GitCommand
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from git_refs import R_CHANGES
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from git_refs import R_HEADS
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from git_refs import R_TAGS
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import platform_utils
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from repo_trace import Trace
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# Prefix that is prepended to all the keys of SyncAnalysisState's data
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# that is saved in the config.
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SYNC_STATE_PREFIX = "repo.syncstate."
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ID_RE = re.compile(r"^[0-9a-f]{40}$")
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REVIEW_CACHE = dict()
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def IsChange(rev):
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return rev.startswith(R_CHANGES)
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def IsId(rev):
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return ID_RE.match(rev)
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def IsTag(rev):
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return rev.startswith(R_TAGS)
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def IsImmutable(rev):
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return IsChange(rev) or IsId(rev) or IsTag(rev)
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def _key(name):
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parts = name.split(".")
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if len(parts) < 2:
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return name.lower()
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parts[0] = parts[0].lower()
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parts[-1] = parts[-1].lower()
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return ".".join(parts)
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class GitConfig:
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_ForUser = None
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_ForSystem = None
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_SYSTEM_CONFIG = "/etc/gitconfig"
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@classmethod
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def ForSystem(cls):
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if cls._ForSystem is None:
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cls._ForSystem = cls(configfile=cls._SYSTEM_CONFIG)
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return cls._ForSystem
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@classmethod
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def ForUser(cls):
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if cls._ForUser is None:
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cls._ForUser = cls(configfile=cls._getUserConfig())
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return cls._ForUser
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@staticmethod
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def _getUserConfig():
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return os.path.expanduser("~/.gitconfig")
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@classmethod
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def ForRepository(cls, gitdir, defaults=None):
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return cls(configfile=os.path.join(gitdir, "config"), defaults=defaults)
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def __init__(self, configfile, defaults=None, jsonFile=None):
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self.file = configfile
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self.defaults = defaults
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self._cache_dict = None
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self._section_dict = None
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self._remotes = {}
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self._branches = {}
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self._json = jsonFile
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if self._json is None:
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self._json = os.path.join(
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os.path.dirname(self.file),
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".repo_" + os.path.basename(self.file) + ".json",
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)
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def ClearCache(self):
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"""Clear the in-memory cache of config."""
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self._cache_dict = None
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def Has(self, name, include_defaults=True):
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"""Return true if this configuration file has the key."""
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if _key(name) in self._cache:
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return True
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if include_defaults and self.defaults:
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return self.defaults.Has(name, include_defaults=True)
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return False
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def GetInt(self, name: str) -> Union[int, None]:
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"""Returns an integer from the configuration file.
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This follows the git config syntax.
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Args:
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name: The key to lookup.
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Returns:
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None if the value was not defined, or is not an int.
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Otherwise, the number itself.
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"""
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v = self.GetString(name)
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if v is None:
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return None
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v = v.strip()
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mult = 1
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if v.endswith("k"):
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v = v[:-1]
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mult = 1024
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elif v.endswith("m"):
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v = v[:-1]
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mult = 1024 * 1024
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elif v.endswith("g"):
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v = v[:-1]
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mult = 1024 * 1024 * 1024
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base = 10
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if v.startswith("0x"):
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base = 16
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try:
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return int(v, base=base) * mult
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except ValueError:
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print(
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f"warning: expected {name} to represent an integer, got {v} "
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"instead",
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file=sys.stderr,
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)
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return None
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def DumpConfigDict(self):
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"""Returns the current configuration dict.
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Configuration data is information only (e.g. logging) and
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should not be considered a stable data-source.
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Returns:
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dict of {<key>, <value>} for git configuration cache.
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<value> are strings converted by GetString.
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"""
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config_dict = {}
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for key in self._cache:
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config_dict[key] = self.GetString(key)
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return config_dict
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def GetBoolean(self, name: str) -> Union[bool, None]:
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"""Returns a boolean from the configuration file.
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Returns:
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None: The value was not defined, or is not a boolean.
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True: The value was set to true or yes.
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False: The value was set to false or no.
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"""
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v = self.GetString(name)
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if v is None:
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return None
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v = v.lower()
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if v in ("true", "yes"):
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return True
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if v in ("false", "no"):
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return False
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print(
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f"warning: expected {name} to represent a boolean, got {v} instead",
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file=sys.stderr,
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)
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return None
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def SetBoolean(self, name, value):
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"""Set the truthy value for a key."""
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if value is not None:
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value = "true" if value else "false"
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self.SetString(name, value)
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def GetString(self, name: str, all_keys: bool = False) -> Union[str, None]:
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"""Get the first value for a key, or None if it is not defined.
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This configuration file is used first, if the key is not
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defined or all_keys = True then the defaults are also searched.
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"""
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try:
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v = self._cache[_key(name)]
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except KeyError:
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if self.defaults:
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return self.defaults.GetString(name, all_keys=all_keys)
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v = []
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if not all_keys:
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if v:
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return v[0]
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return None
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r = []
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r.extend(v)
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if self.defaults:
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r.extend(self.defaults.GetString(name, all_keys=True))
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return r
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def SetString(self, name, value):
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"""Set the value(s) for a key.
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Only this configuration file is modified.
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The supplied value should be either a string, or a list of strings (to
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store multiple values), or None (to delete the key).
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"""
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key = _key(name)
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try:
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old = self._cache[key]
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except KeyError:
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old = []
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if value is None:
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if old:
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del self._cache[key]
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self._do("--unset-all", name)
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elif isinstance(value, list):
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if len(value) == 0:
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self.SetString(name, None)
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elif len(value) == 1:
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self.SetString(name, value[0])
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elif old != value:
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self._cache[key] = list(value)
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self._do("--replace-all", name, value[0])
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for i in range(1, len(value)):
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self._do("--add", name, value[i])
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elif len(old) != 1 or old[0] != value:
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self._cache[key] = [value]
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self._do("--replace-all", name, value)
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def GetRemote(self, name):
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"""Get the remote.$name.* configuration values as an object."""
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try:
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r = self._remotes[name]
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except KeyError:
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r = Remote(self, name)
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self._remotes[r.name] = r
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return r
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def GetBranch(self, name):
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"""Get the branch.$name.* configuration values as an object."""
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try:
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b = self._branches[name]
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except KeyError:
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b = Branch(self, name)
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self._branches[b.name] = b
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return b
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def GetSyncAnalysisStateData(self):
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"""Returns data to be logged for the analysis of sync performance."""
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return {
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k: v
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for k, v in self.DumpConfigDict().items()
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if k.startswith(SYNC_STATE_PREFIX)
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}
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def UpdateSyncAnalysisState(self, options, superproject_logging_data):
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"""Update Config's SYNC_STATE_PREFIX* data with the latest sync data.
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Args:
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options: Options passed to sync returned from optparse. See
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_Options().
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superproject_logging_data: A dictionary of superproject data that is
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to be logged.
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Returns:
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SyncAnalysisState object.
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"""
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return SyncAnalysisState(self, options, superproject_logging_data)
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def GetSubSections(self, section):
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"""List all subsection names matching $section.*.*"""
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return self._sections.get(section, set())
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def HasSection(self, section, subsection=""):
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"""Does at least one key in section.subsection exist?"""
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try:
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return subsection in self._sections[section]
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except KeyError:
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return False
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def UrlInsteadOf(self, url):
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"""Resolve any url.*.insteadof references."""
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for new_url in self.GetSubSections("url"):
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for old_url in self.GetString("url.%s.insteadof" % new_url, True):
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if old_url is not None and url.startswith(old_url):
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return new_url + url[len(old_url) :]
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return url
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@property
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def _sections(self):
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d = self._section_dict
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if d is None:
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d = {}
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for name in self._cache.keys():
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p = name.split(".")
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if 2 == len(p):
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section = p[0]
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subsect = ""
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else:
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section = p[0]
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subsect = ".".join(p[1:-1])
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if section not in d:
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d[section] = set()
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d[section].add(subsect)
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self._section_dict = d
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return d
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@property
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def _cache(self):
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if self._cache_dict is None:
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self._cache_dict = self._Read()
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return self._cache_dict
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def _Read(self):
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d = self._ReadJson()
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if d is None:
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d = self._ReadGit()
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self._SaveJson(d)
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return d
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def _ReadJson(self):
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try:
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if os.path.getmtime(self._json) <= os.path.getmtime(self.file):
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platform_utils.remove(self._json)
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return None
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except OSError:
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return None
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try:
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with Trace(": parsing %s", self.file):
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with open(self._json) as fd:
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return json.load(fd)
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except (OSError, ValueError):
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platform_utils.remove(self._json, missing_ok=True)
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return None
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def _SaveJson(self, cache):
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try:
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with open(self._json, "w") as fd:
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json.dump(cache, fd, indent=2)
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except (OSError, TypeError):
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platform_utils.remove(self._json, missing_ok=True)
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def _ReadGit(self):
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"""
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Read configuration data from git.
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This internal method populates the GitConfig cache.
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"""
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c = {}
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if not os.path.exists(self.file):
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return c
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d = self._do("--null", "--list")
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for line in d.rstrip("\0").split("\0"):
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if "\n" in line:
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key, val = line.split("\n", 1)
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else:
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key = line
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val = None
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if key in c:
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c[key].append(val)
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else:
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c[key] = [val]
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return c
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def _do(self, *args):
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if self.file == self._SYSTEM_CONFIG:
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command = ["config", "--system", "--includes"]
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else:
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command = ["config", "--file", self.file, "--includes"]
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command.extend(args)
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p = GitCommand(None, command, capture_stdout=True, capture_stderr=True)
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if p.Wait() == 0:
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return p.stdout
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else:
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raise GitError("git config %s: %s" % (str(args), p.stderr))
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class RepoConfig(GitConfig):
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"""User settings for repo itself."""
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@staticmethod
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def _getUserConfig():
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repo_config_dir = os.getenv("REPO_CONFIG_DIR", os.path.expanduser("~"))
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return os.path.join(repo_config_dir, ".repoconfig/config")
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class RefSpec:
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"""A Git refspec line, split into its components:
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forced: True if the line starts with '+'
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src: Left side of the line
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dst: Right side of the line
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"""
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@classmethod
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def FromString(cls, rs):
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lhs, rhs = rs.split(":", 2)
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if lhs.startswith("+"):
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lhs = lhs[1:]
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forced = True
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else:
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forced = False
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return cls(forced, lhs, rhs)
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def __init__(self, forced, lhs, rhs):
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self.forced = forced
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self.src = lhs
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self.dst = rhs
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def SourceMatches(self, rev):
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if self.src:
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if rev == self.src:
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return True
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if self.src.endswith("/*") and rev.startswith(self.src[:-1]):
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return True
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return False
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def DestMatches(self, ref):
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if self.dst:
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if ref == self.dst:
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return True
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if self.dst.endswith("/*") and ref.startswith(self.dst[:-1]):
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return True
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return False
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def MapSource(self, rev):
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if self.src.endswith("/*"):
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return self.dst[:-1] + rev[len(self.src) - 1 :]
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return self.dst
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def __str__(self):
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s = ""
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if self.forced:
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s += "+"
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if self.src:
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s += self.src
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if self.dst:
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s += ":"
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s += self.dst
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return s
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URI_ALL = re.compile(r"^([a-z][a-z+-]*)://([^@/]*@?[^/]*)/")
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def GetSchemeFromUrl(url):
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m = URI_ALL.match(url)
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if m:
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return m.group(1)
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return None
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@contextlib.contextmanager
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def GetUrlCookieFile(url, quiet):
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if url.startswith("persistent-"):
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try:
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p = subprocess.Popen(
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["git-remote-persistent-https", "-print_config", url],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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)
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try:
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cookieprefix = "http.cookiefile="
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proxyprefix = "http.proxy="
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cookiefile = None
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proxy = None
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for line in p.stdout:
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line = line.strip().decode("utf-8")
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if line.startswith(cookieprefix):
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cookiefile = os.path.expanduser(
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line[len(cookieprefix) :]
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)
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if line.startswith(proxyprefix):
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proxy = line[len(proxyprefix) :]
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# Leave subprocess open, as cookie file may be transient.
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if cookiefile or proxy:
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yield cookiefile, proxy
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return
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finally:
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p.stdin.close()
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if p.wait():
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err_msg = p.stderr.read().decode("utf-8")
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if " -print_config" in err_msg:
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pass # Persistent proxy doesn't support -print_config.
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elif not quiet:
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print(err_msg, file=sys.stderr)
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except OSError as e:
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if e.errno == errno.ENOENT:
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pass # No persistent proxy.
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raise
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cookiefile = GitConfig.ForUser().GetString("http.cookiefile")
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if cookiefile:
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cookiefile = os.path.expanduser(cookiefile)
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yield cookiefile, None
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class Remote:
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"""Configuration options related to a remote."""
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def __init__(self, config, name):
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self._config = config
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self.name = name
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self.url = self._Get("url")
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self.pushUrl = self._Get("pushurl")
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self.review = self._Get("review")
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self.projectname = self._Get("projectname")
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self.fetch = list(
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map(RefSpec.FromString, self._Get("fetch", all_keys=True))
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)
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self._review_url = None
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def _InsteadOf(self):
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globCfg = GitConfig.ForUser()
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urlList = globCfg.GetSubSections("url")
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longest = ""
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longestUrl = ""
|
|
|
|
for url in urlList:
|
|
key = "url." + url + ".insteadOf"
|
|
insteadOfList = globCfg.GetString(key, all_keys=True)
|
|
|
|
for insteadOf in insteadOfList:
|
|
if self.url.startswith(insteadOf) and len(insteadOf) > len(
|
|
longest
|
|
):
|
|
longest = insteadOf
|
|
longestUrl = url
|
|
|
|
if len(longest) == 0:
|
|
return self.url
|
|
|
|
return self.url.replace(longest, longestUrl, 1)
|
|
|
|
def PreConnectFetch(self, ssh_proxy):
|
|
"""Run any setup for this remote before we connect to it.
|
|
|
|
In practice, if the remote is using SSH, we'll attempt to create a new
|
|
SSH master session to it for reuse across projects.
|
|
|
|
Args:
|
|
ssh_proxy: The SSH settings for managing master sessions.
|
|
|
|
Returns:
|
|
Whether the preconnect phase for this remote was successful.
|
|
"""
|
|
if not ssh_proxy:
|
|
return True
|
|
|
|
connectionUrl = self._InsteadOf()
|
|
return ssh_proxy.preconnect(connectionUrl)
|
|
|
|
def ReviewUrl(self, userEmail, validate_certs):
|
|
if self._review_url is None:
|
|
if self.review is None:
|
|
return None
|
|
|
|
u = self.review
|
|
if u.startswith("persistent-"):
|
|
u = u[len("persistent-") :]
|
|
if u.split(":")[0] not in ("http", "https", "sso", "ssh"):
|
|
u = "http://%s" % u
|
|
if u.endswith("/Gerrit"):
|
|
u = u[: len(u) - len("/Gerrit")]
|
|
if u.endswith("/ssh_info"):
|
|
u = u[: len(u) - len("/ssh_info")]
|
|
if not u.endswith("/"):
|
|
u += "/"
|
|
http_url = u
|
|
|
|
if u in REVIEW_CACHE:
|
|
self._review_url = REVIEW_CACHE[u]
|
|
elif "REPO_HOST_PORT_INFO" in os.environ:
|
|
host, port = os.environ["REPO_HOST_PORT_INFO"].split()
|
|
self._review_url = self._SshReviewUrl(userEmail, host, port)
|
|
REVIEW_CACHE[u] = self._review_url
|
|
elif u.startswith("sso:") or u.startswith("ssh:"):
|
|
self._review_url = u # Assume it's right
|
|
REVIEW_CACHE[u] = self._review_url
|
|
elif "REPO_IGNORE_SSH_INFO" in os.environ:
|
|
self._review_url = http_url
|
|
REVIEW_CACHE[u] = self._review_url
|
|
else:
|
|
try:
|
|
info_url = u + "ssh_info"
|
|
if not validate_certs:
|
|
context = ssl._create_unverified_context()
|
|
info = urllib.request.urlopen(
|
|
info_url, context=context
|
|
).read()
|
|
else:
|
|
info = urllib.request.urlopen(info_url).read()
|
|
if info == b"NOT_AVAILABLE" or b"<" in info:
|
|
# If `info` contains '<', we assume the server gave us
|
|
# some sort of HTML response back, like maybe a login
|
|
# page.
|
|
#
|
|
# Assume HTTP if SSH is not enabled or ssh_info doesn't
|
|
# look right.
|
|
self._review_url = http_url
|
|
else:
|
|
info = info.decode("utf-8")
|
|
host, port = info.split()
|
|
self._review_url = self._SshReviewUrl(
|
|
userEmail, host, port
|
|
)
|
|
except urllib.error.HTTPError as e:
|
|
raise UploadError("%s: %s" % (self.review, str(e)))
|
|
except urllib.error.URLError as e:
|
|
raise UploadError("%s: %s" % (self.review, str(e)))
|
|
except http.client.HTTPException as e:
|
|
raise UploadError(
|
|
"%s: %s" % (self.review, e.__class__.__name__)
|
|
)
|
|
|
|
REVIEW_CACHE[u] = self._review_url
|
|
return self._review_url + self.projectname
|
|
|
|
def _SshReviewUrl(self, userEmail, host, port):
|
|
username = self._config.GetString("review.%s.username" % self.review)
|
|
if username is None:
|
|
username = userEmail.split("@")[0]
|
|
return "ssh://%s@%s:%s/" % (username, host, port)
|
|
|
|
def ToLocal(self, rev):
|
|
"""Convert a remote revision string to something we have locally."""
|
|
if self.name == "." or IsId(rev):
|
|
return rev
|
|
|
|
if not rev.startswith("refs/"):
|
|
rev = R_HEADS + rev
|
|
|
|
for spec in self.fetch:
|
|
if spec.SourceMatches(rev):
|
|
return spec.MapSource(rev)
|
|
|
|
if not rev.startswith(R_HEADS):
|
|
return rev
|
|
|
|
raise GitError(
|
|
"%s: remote %s does not have %s"
|
|
% (self.projectname, self.name, rev)
|
|
)
|
|
|
|
def WritesTo(self, ref):
|
|
"""True if the remote stores to the tracking ref."""
|
|
for spec in self.fetch:
|
|
if spec.DestMatches(ref):
|
|
return True
|
|
return False
|
|
|
|
def ResetFetch(self, mirror=False):
|
|
"""Set the fetch refspec to its default value."""
|
|
if mirror:
|
|
dst = "refs/heads/*"
|
|
else:
|
|
dst = "refs/remotes/%s/*" % self.name
|
|
self.fetch = [RefSpec(True, "refs/heads/*", dst)]
|
|
|
|
def Save(self):
|
|
"""Save this remote to the configuration."""
|
|
self._Set("url", self.url)
|
|
if self.pushUrl is not None:
|
|
self._Set("pushurl", self.pushUrl + "/" + self.projectname)
|
|
else:
|
|
self._Set("pushurl", self.pushUrl)
|
|
self._Set("review", self.review)
|
|
self._Set("projectname", self.projectname)
|
|
self._Set("fetch", list(map(str, self.fetch)))
|
|
|
|
def _Set(self, key, value):
|
|
key = "remote.%s.%s" % (self.name, key)
|
|
return self._config.SetString(key, value)
|
|
|
|
def _Get(self, key, all_keys=False):
|
|
key = "remote.%s.%s" % (self.name, key)
|
|
return self._config.GetString(key, all_keys=all_keys)
|
|
|
|
|
|
class Branch:
|
|
"""Configuration options related to a single branch."""
|
|
|
|
def __init__(self, config, name):
|
|
self._config = config
|
|
self.name = name
|
|
self.merge = self._Get("merge")
|
|
|
|
r = self._Get("remote")
|
|
if r:
|
|
self.remote = self._config.GetRemote(r)
|
|
else:
|
|
self.remote = None
|
|
|
|
@property
|
|
def LocalMerge(self):
|
|
"""Convert the merge spec to a local name."""
|
|
if self.remote and self.merge:
|
|
return self.remote.ToLocal(self.merge)
|
|
return None
|
|
|
|
def Save(self):
|
|
"""Save this branch back into the configuration."""
|
|
if self._config.HasSection("branch", self.name):
|
|
if self.remote:
|
|
self._Set("remote", self.remote.name)
|
|
else:
|
|
self._Set("remote", None)
|
|
self._Set("merge", self.merge)
|
|
|
|
else:
|
|
with open(self._config.file, "a") as fd:
|
|
fd.write('[branch "%s"]\n' % self.name)
|
|
if self.remote:
|
|
fd.write("\tremote = %s\n" % self.remote.name)
|
|
if self.merge:
|
|
fd.write("\tmerge = %s\n" % self.merge)
|
|
|
|
def _Set(self, key, value):
|
|
key = "branch.%s.%s" % (self.name, key)
|
|
return self._config.SetString(key, value)
|
|
|
|
def _Get(self, key, all_keys=False):
|
|
key = "branch.%s.%s" % (self.name, key)
|
|
return self._config.GetString(key, all_keys=all_keys)
|
|
|
|
|
|
class SyncAnalysisState:
|
|
"""Configuration options related to logging of sync state for analysis.
|
|
|
|
This object is versioned.
|
|
"""
|
|
|
|
def __init__(self, config, options, superproject_logging_data):
|
|
"""Initializes SyncAnalysisState.
|
|
|
|
Saves the following data into the |config| object.
|
|
- sys.argv, options, superproject's logging data.
|
|
- repo.*, branch.* and remote.* parameters from config object.
|
|
- Current time as synctime.
|
|
- Version number of the object.
|
|
|
|
All the keys saved by this object are prepended with SYNC_STATE_PREFIX.
|
|
|
|
Args:
|
|
config: GitConfig object to store all options.
|
|
options: Options passed to sync returned from optparse. See
|
|
_Options().
|
|
superproject_logging_data: A dictionary of superproject data that is
|
|
to be logged.
|
|
"""
|
|
self._config = config
|
|
now = datetime.datetime.now(datetime.timezone.utc)
|
|
self._Set("main.synctime", now.isoformat(timespec="microseconds"))
|
|
self._Set("main.version", "1")
|
|
self._Set("sys.argv", sys.argv)
|
|
for key, value in superproject_logging_data.items():
|
|
self._Set(f"superproject.{key}", value)
|
|
for key, value in options.__dict__.items():
|
|
self._Set(f"options.{key}", value)
|
|
config_items = config.DumpConfigDict().items()
|
|
EXTRACT_NAMESPACES = {"repo", "branch", "remote"}
|
|
self._SetDictionary(
|
|
{
|
|
k: v
|
|
for k, v in config_items
|
|
if not k.startswith(SYNC_STATE_PREFIX)
|
|
and k.split(".", 1)[0] in EXTRACT_NAMESPACES
|
|
}
|
|
)
|
|
|
|
def _SetDictionary(self, data):
|
|
"""Save all key/value pairs of |data| dictionary.
|
|
|
|
Args:
|
|
data: A dictionary whose key/value are to be saved.
|
|
"""
|
|
for key, value in data.items():
|
|
self._Set(key, value)
|
|
|
|
def _Set(self, key, value):
|
|
"""Set the |value| for a |key| in the |_config| member.
|
|
|
|
|key| is prepended with the value of SYNC_STATE_PREFIX constant.
|
|
|
|
Args:
|
|
key: Name of the key.
|
|
value: |value| could be of any type. If it is 'bool', it will be
|
|
saved as a Boolean and for all other types, it will be saved as
|
|
a String.
|
|
"""
|
|
if value is None:
|
|
return
|
|
sync_key = f"{SYNC_STATE_PREFIX}{key}"
|
|
sync_key = sync_key.replace("_", "")
|
|
if isinstance(value, str):
|
|
self._config.SetString(sync_key, value)
|
|
elif isinstance(value, bool):
|
|
self._config.SetBoolean(sync_key, value)
|
|
else:
|
|
self._config.SetString(sync_key, str(value))
|