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							325 lines
						
					
					
						
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							325 lines
						
					
					
						
							11 KiB
						
					
					
				import logging
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import os
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import re
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from typing import List, Optional, Tuple
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from pip._internal.utils.misc import (
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    HiddenText,
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    display_path,
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    is_console_interactive,
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    is_installable_dir,
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    split_auth_from_netloc,
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)
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from pip._internal.utils.subprocess import CommandArgs, make_command
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from pip._internal.vcs.versioncontrol import (
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    AuthInfo,
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    RemoteNotFoundError,
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    RevOptions,
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    VersionControl,
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    vcs,
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)
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logger = logging.getLogger(__name__)
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_svn_xml_url_re = re.compile('url="([^"]+)"')
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_svn_rev_re = re.compile(r'committed-rev="(\d+)"')
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_svn_info_xml_rev_re = re.compile(r'\s*revision="(\d+)"')
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_svn_info_xml_url_re = re.compile(r"<url>(.*)</url>")
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class Subversion(VersionControl):
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    name = "svn"
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    dirname = ".svn"
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    repo_name = "checkout"
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    schemes = ("svn+ssh", "svn+http", "svn+https", "svn+svn", "svn+file")
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    @classmethod
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    def should_add_vcs_url_prefix(cls, remote_url: str) -> bool:
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        return True
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    @staticmethod
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    def get_base_rev_args(rev: str) -> List[str]:
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        return ["-r", rev]
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    @classmethod
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    def get_revision(cls, location: str) -> str:
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        """
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        Return the maximum revision for all files under a given location
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        """
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        # Note: taken from setuptools.command.egg_info
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        revision = 0
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        for base, dirs, _ in os.walk(location):
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            if cls.dirname not in dirs:
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                dirs[:] = []
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                continue  # no sense walking uncontrolled subdirs
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            dirs.remove(cls.dirname)
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            entries_fn = os.path.join(base, cls.dirname, "entries")
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            if not os.path.exists(entries_fn):
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                # FIXME: should we warn?
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                continue
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            dirurl, localrev = cls._get_svn_url_rev(base)
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            if base == location:
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                assert dirurl is not None
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                base = dirurl + "/"  # save the root url
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            elif not dirurl or not dirurl.startswith(base):
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                dirs[:] = []
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                continue  # not part of the same svn tree, skip it
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            revision = max(revision, localrev)
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        return str(revision)
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    @classmethod
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    def get_netloc_and_auth(
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        cls, netloc: str, scheme: str
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    ) -> Tuple[str, Tuple[Optional[str], Optional[str]]]:
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        """
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        This override allows the auth information to be passed to svn via the
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        --username and --password options instead of via the URL.
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        """
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        if scheme == "ssh":
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            # The --username and --password options can't be used for
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            # svn+ssh URLs, so keep the auth information in the URL.
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            return super().get_netloc_and_auth(netloc, scheme)
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        return split_auth_from_netloc(netloc)
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    @classmethod
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    def get_url_rev_and_auth(cls, url: str) -> Tuple[str, Optional[str], AuthInfo]:
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        # hotfix the URL scheme after removing svn+ from svn+ssh:// readd it
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        url, rev, user_pass = super().get_url_rev_and_auth(url)
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        if url.startswith("ssh://"):
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            url = "svn+" + url
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        return url, rev, user_pass
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    @staticmethod
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    def make_rev_args(
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        username: Optional[str], password: Optional[HiddenText]
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    ) -> CommandArgs:
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        extra_args: CommandArgs = []
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        if username:
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            extra_args += ["--username", username]
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        if password:
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            extra_args += ["--password", password]
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        return extra_args
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    @classmethod
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    def get_remote_url(cls, location: str) -> str:
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        # In cases where the source is in a subdirectory, we have to look up in
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        # the location until we find a valid project root.
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        orig_location = location
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        while not is_installable_dir(location):
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            last_location = location
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            location = os.path.dirname(location)
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            if location == last_location:
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                # We've traversed up to the root of the filesystem without
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                # finding a Python project.
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                logger.warning(
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                    "Could not find Python project for directory %s (tried all "
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                    "parent directories)",
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                    orig_location,
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                )
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                raise RemoteNotFoundError
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        url, _rev = cls._get_svn_url_rev(location)
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        if url is None:
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            raise RemoteNotFoundError
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        return url
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    @classmethod
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    def _get_svn_url_rev(cls, location: str) -> Tuple[Optional[str], int]:
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        from pip._internal.exceptions import InstallationError
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        entries_path = os.path.join(location, cls.dirname, "entries")
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        if os.path.exists(entries_path):
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            with open(entries_path) as f:
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                data = f.read()
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        else:  # subversion >= 1.7 does not have the 'entries' file
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            data = ""
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        url = None
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        if data.startswith("8") or data.startswith("9") or data.startswith("10"):
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            entries = list(map(str.splitlines, data.split("\n\x0c\n")))
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            del entries[0][0]  # get rid of the '8'
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            url = entries[0][3]
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            revs = [int(d[9]) for d in entries if len(d) > 9 and d[9]] + [0]
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        elif data.startswith("<?xml"):
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            match = _svn_xml_url_re.search(data)
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            if not match:
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                raise ValueError(f"Badly formatted data: {data!r}")
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            url = match.group(1)  # get repository URL
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            revs = [int(m.group(1)) for m in _svn_rev_re.finditer(data)] + [0]
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        else:
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            try:
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                # subversion >= 1.7
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                # Note that using get_remote_call_options is not necessary here
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                # because `svn info` is being run against a local directory.
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                # We don't need to worry about making sure interactive mode
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                # is being used to prompt for passwords, because passwords
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                # are only potentially needed for remote server requests.
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                xml = cls.run_command(
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                    ["info", "--xml", location],
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                    show_stdout=False,
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                    stdout_only=True,
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                )
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                match = _svn_info_xml_url_re.search(xml)
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                assert match is not None
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                url = match.group(1)
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                revs = [int(m.group(1)) for m in _svn_info_xml_rev_re.finditer(xml)]
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            except InstallationError:
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                url, revs = None, []
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        if revs:
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            rev = max(revs)
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        else:
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            rev = 0
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        return url, rev
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    @classmethod
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    def is_commit_id_equal(cls, dest: str, name: Optional[str]) -> bool:
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        """Always assume the versions don't match"""
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        return False
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    def __init__(self, use_interactive: bool = None) -> None:
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        if use_interactive is None:
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            use_interactive = is_console_interactive()
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        self.use_interactive = use_interactive
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        # This member is used to cache the fetched version of the current
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        # ``svn`` client.
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        # Special value definitions:
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        #   None: Not evaluated yet.
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        #   Empty tuple: Could not parse version.
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        self._vcs_version: Optional[Tuple[int, ...]] = None
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        super().__init__()
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    def call_vcs_version(self) -> Tuple[int, ...]:
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        """Query the version of the currently installed Subversion client.
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        :return: A tuple containing the parts of the version information or
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            ``()`` if the version returned from ``svn`` could not be parsed.
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        :raises: BadCommand: If ``svn`` is not installed.
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        """
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        # Example versions:
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        #   svn, version 1.10.3 (r1842928)
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        #      compiled Feb 25 2019, 14:20:39 on x86_64-apple-darwin17.0.0
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        #   svn, version 1.7.14 (r1542130)
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        #      compiled Mar 28 2018, 08:49:13 on x86_64-pc-linux-gnu
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        #   svn, version 1.12.0-SlikSvn (SlikSvn/1.12.0)
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        #      compiled May 28 2019, 13:44:56 on x86_64-microsoft-windows6.2
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        version_prefix = "svn, version "
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        version = self.run_command(["--version"], show_stdout=False, stdout_only=True)
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        if not version.startswith(version_prefix):
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            return ()
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        version = version[len(version_prefix) :].split()[0]
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        version_list = version.partition("-")[0].split(".")
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        try:
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            parsed_version = tuple(map(int, version_list))
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        except ValueError:
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            return ()
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        return parsed_version
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    def get_vcs_version(self) -> Tuple[int, ...]:
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        """Return the version of the currently installed Subversion client.
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        If the version of the Subversion client has already been queried,
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        a cached value will be used.
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        :return: A tuple containing the parts of the version information or
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            ``()`` if the version returned from ``svn`` could not be parsed.
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        :raises: BadCommand: If ``svn`` is not installed.
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        """
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        if self._vcs_version is not None:
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            # Use cached version, if available.
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            # If parsing the version failed previously (empty tuple),
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            # do not attempt to parse it again.
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            return self._vcs_version
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        vcs_version = self.call_vcs_version()
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        self._vcs_version = vcs_version
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        return vcs_version
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    def get_remote_call_options(self) -> CommandArgs:
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        """Return options to be used on calls to Subversion that contact the server.
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        These options are applicable for the following ``svn`` subcommands used
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        in this class.
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            - checkout
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            - switch
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            - update
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        :return: A list of command line arguments to pass to ``svn``.
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        """
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        if not self.use_interactive:
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            # --non-interactive switch is available since Subversion 0.14.4.
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            # Subversion < 1.8 runs in interactive mode by default.
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            return ["--non-interactive"]
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        svn_version = self.get_vcs_version()
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        # By default, Subversion >= 1.8 runs in non-interactive mode if
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        # stdin is not a TTY. Since that is how pip invokes SVN, in
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        # call_subprocess(), pip must pass --force-interactive to ensure
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        # the user can be prompted for a password, if required.
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        #   SVN added the --force-interactive option in SVN 1.8. Since
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        # e.g. RHEL/CentOS 7, which is supported until 2024, ships with
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        # SVN 1.7, pip should continue to support SVN 1.7. Therefore, pip
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        # can't safely add the option if the SVN version is < 1.8 (or unknown).
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        if svn_version >= (1, 8):
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            return ["--force-interactive"]
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        return []
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    def fetch_new(
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        self, dest: str, url: HiddenText, rev_options: RevOptions, verbosity: int
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    ) -> None:
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        rev_display = rev_options.to_display()
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        logger.info(
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            "Checking out %s%s to %s",
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            url,
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            rev_display,
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            display_path(dest),
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        )
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        if verbosity <= 0:
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            flag = "--quiet"
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        else:
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            flag = ""
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        cmd_args = make_command(
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            "checkout",
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            flag,
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            self.get_remote_call_options(),
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            rev_options.to_args(),
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            url,
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            dest,
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        )
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        self.run_command(cmd_args)
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    def switch(self, dest: str, url: HiddenText, rev_options: RevOptions) -> None:
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        cmd_args = make_command(
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            "switch",
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            self.get_remote_call_options(),
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            rev_options.to_args(),
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            url,
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            dest,
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        )
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        self.run_command(cmd_args)
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    def update(self, dest: str, url: HiddenText, rev_options: RevOptions) -> None:
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        cmd_args = make_command(
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            "update",
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            self.get_remote_call_options(),
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            rev_options.to_args(),
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            dest,
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        )
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        self.run_command(cmd_args)
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vcs.register(Subversion)
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