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File Name : direct_url.py

""" PEP 610 """
import json
import re
import urllib.parse
from typing import Any, Dict, Iterable, Optional, Type, TypeVar, Union

__all__ = [
    "DirectUrl",
    "DirectUrlValidationError",
    "DirInfo",
    "ArchiveInfo",
    "VcsInfo",
]

T = TypeVar("T")

DIRECT_URL_METADATA_NAME = "direct_url.json"
ENV_VAR_RE = re.compile(r"^\$\{[A-Za-z0-9-_]+\}(:\$\{[A-Za-z0-9-_]+\})?$")

class DirectUrlValidationError(Exception):
    pass

def _get(
    d: Dict[str, Any], expected_type: Type[T], key: str, default: Optional[T] = None
) -> Optional[T]:
    """Get value from dictionary and verify expected type."""
    if key not in d:
        return default
    value = d[key]
    if not isinstance(value, expected_type):
        raise DirectUrlValidationError(
            "{!r} has unexpected type for {} (expected {})".format(
                value, key, expected_type
            )
        )
    return value

def _get_required(
    d: Dict[str, Any], expected_type: Type[T], key: str, default: Optional[T] = None
) -> T:
    value = _get(d, expected_type, key, default)
    if value is None:
        raise DirectUrlValidationError(f"{key} must have a value")
    return value

def _exactly_one_of(infos: Iterable[Optional["InfoType"]]) -> "InfoType":
    infos = [info for info in infos if info is not None]
    if not infos:
        raise DirectUrlValidationError(
            "missing one of archive_info, dir_info, vcs_info"
        )
    if len(infos) > 1:
        raise DirectUrlValidationError(
            "more than one of archive_info, dir_info, vcs_info"
        )
    assert infos[0] is not None
    return infos[0]

def _filter_none(**kwargs: Any) -> Dict[str, Any]:
    """Make dict excluding None values."""
    return {k: v for k, v in kwargs.items() if v is not None}

class VcsInfo:
    name = "vcs_info"

def __init__(
        self,
        vcs: str,
        commit_id: str,
        requested_revision: Optional[str] = None,
    ) -> None:
        self.vcs = vcs
        self.requested_revision = requested_revision
        self.commit_id = commit_id

@classmethod
    def _from_dict(cls, d: Optional[Dict[str, Any]]) -> Optional["VcsInfo"]:
        if d is None:
            return None
        return cls(
            vcs=_get_required(d, str, "vcs"),
            commit_id=_get_required(d, str, "commit_id"),
            requested_revision=_get(d, str, "requested_revision"),
        )

def _to_dict(self) -> Dict[str, Any]:
        return _filter_none(
            vcs=self.vcs,
            requested_revision=self.requested_revision,
            commit_id=self.commit_id,
        )

class ArchiveInfo:
    name = "archive_info"

def __init__(
        self,
        hash: Optional[str] = None,
        hashes: Optional[Dict[str, str]] = None,
    ) -> None:
        # set hashes before hash, since the hash setter will further populate hashes
        self.hashes = hashes
        self.hash = hash

@property
    def hash(self) -> Optional[str]:
        return self._hash

@hash.setter
    def hash(self, value: Optional[str]) -> None:
        if value is not None:
            # Auto-populate the hashes key to upgrade to the new format automatically.
            # We don't back-populate the legacy hash key from hashes.
            try:
                hash_name, hash_value = value.split("=", 1)
            except ValueError:
                raise DirectUrlValidationError(
                    f"invalid archive_info.hash format: {value!r}"
                )
            if self.hashes is None:
                self.hashes = {hash_name: hash_value}
            elif hash_name not in self.hashes:
                self.hashes = self.hashes.copy()
                self.hashes[hash_name] = hash_value
        self._hash = value

@classmethod
    def _from_dict(cls, d: Optional[Dict[str, Any]]) -> Optional["ArchiveInfo"]:
        if d is None:
            return None
        return cls(hash=_get(d, str, "hash"), hashes=_get(d, dict, "hashes"))

def _to_dict(self) -> Dict[str, Any]:
        return _filter_none(hash=self.hash, hashes=self.hashes)

class DirInfo:
    name = "dir_info"

def __init__(
        self,
        editable: bool = False,
    ) -> None:
        self.editable = editable

@classmethod
    def _from_dict(cls, d: Optional[Dict[str, Any]]) -> Optional["DirInfo"]:
        if d is None:
            return None
        return cls(editable=_get_required(d, bool, "editable", default=False))

def _to_dict(self) -> Dict[str, Any]:
        return _filter_none(editable=self.editable or None)

InfoType = Union[ArchiveInfo, DirInfo, VcsInfo]

class DirectUrl:
    def __init__(
        self,
        url: str,
        info: InfoType,
        subdirectory: Optional[str] = None,
    ) -> None:
        self.url = url
        self.info = info
        self.subdirectory = subdirectory

def _remove_auth_from_netloc(self, netloc: str) -> str:
        if "@" not in netloc:
            return netloc
        user_pass, netloc_no_user_pass = netloc.split("@", 1)
        if (
            isinstance(self.info, VcsInfo)
            and self.info.vcs == "git"
            and user_pass == "git"
        ):
            return netloc
        if ENV_VAR_RE.match(user_pass):
            return netloc
        return netloc_no_user_pass

@property
    def redacted_url(self) -> str:
        """url with user:password part removed unless it is formed with
        environment variables as specified in PEP 610, or it is ``git``
        in the case of a git URL.
        """
        purl = urllib.parse.urlsplit(self.url)
        netloc = self._remove_auth_from_netloc(purl.netloc)
        surl = urllib.parse.urlunsplit(
            (purl.scheme, netloc, purl.path, purl.query, purl.fragment)
        )
        return surl

def validate(self) -> None:
        self.from_dict(self.to_dict())

@classmethod
    def from_dict(cls, d: Dict[str, Any]) -> "DirectUrl":
        return DirectUrl(
            url=_get_required(d, str, "url"),
            subdirectory=_get(d, str, "subdirectory"),
            info=_exactly_one_of(
                [
                    ArchiveInfo._from_dict(_get(d, dict, "archive_info")),
                    DirInfo._from_dict(_get(d, dict, "dir_info")),
                    VcsInfo._from_dict(_get(d, dict, "vcs_info")),
                ]
            ),
        )

def to_dict(self) -> Dict[str, Any]:
        res = _filter_none(
            url=self.redacted_url,
            subdirectory=self.subdirectory,
        )
        res[self.info.name] = self.info._to_dict()
        return res

@classmethod
    def from_json(cls, s: str) -> "DirectUrl":
        return cls.from_dict(json.loads(s))

def to_json(self) -> str:
        return json.dumps(self.to_dict(), sort_keys=True)

def is_local_editable(self) -> bool:
        return isinstance(self.info, DirInfo) and self.info.editable

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	root/linksafe	0755	2026-02-08 11:43:10
..	dir	-	root/linksafe	0755	2026-02-08 11:43:10
__pycache__	dir	-	root/linksafe	0755	2026-02-08 11:43:10
__init__.py	text/plain	63 B	root/linksafe	0644	2026-01-10 11:03:58
candidate.py	text/x-script.python	990 B	root/linksafe	0644	2026-01-10 11:03:58
direct_url.py	text/plain	6.77 KB	root/linksafe	0644	2026-01-10 11:03:58
format_control.py	text/x-script.python	2.46 KB	root/linksafe	0644	2026-01-10 11:03:58
index.py	text/x-script.python	1.01 KB	root/linksafe	0644	2026-01-10 11:03:58
installation_report.py	text/x-script.python	2.75 KB	root/linksafe	0644	2026-01-10 11:03:58
link.py	text/x-script.python	20.33 KB	root/linksafe	0644	2026-01-10 11:03:58
scheme.py	text/plain	738 B	root/linksafe	0644	2026-01-10 11:03:58
search_scope.py	text/x-script.python	4.53 KB	root/linksafe	0644	2026-01-10 11:03:58
selection_prefs.py	text/x-script.python	1.86 KB	root/linksafe	0644	2026-01-10 11:03:58
target_python.py	text/x-script.python	4.17 KB	root/linksafe	0644	2026-01-10 11:03:58
wheel.py	text/plain	3.52 KB	root/linksafe	0644	2026-01-10 11:03:58

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