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from __future__ import annotations
class InvalidRepositoryError(Exception):
"""The given string is not a valid repository name."""
def resolve_repository_name(repo_name: str) -> tuple[str, str]:
if "://" in repo_name:
raise InvalidRepositoryError(
f"Repository name cannot contain a scheme ({repo_name})"
)
index_name, remote_name = split_repo_name(repo_name)
if index_name[0] == "-" or index_name[-1] == "-":
raise InvalidRepositoryError(
f"Invalid index name ({index_name}). Cannot begin or end with a hyphen."
)
return resolve_index_name(index_name), remote_name
def resolve_index_name(index_name: str) -> str:
index_name = convert_to_hostname(index_name)
if index_name == "index.docker.io":
index_name = "docker.io"
return index_name
def split_repo_name(repo_name: str) -> tuple[str, str]:
parts = repo_name.split("/", 1)
if len(parts) == 1 or (
"." not in parts[0] and ":" not in parts[0] and parts[0] != "localhost"
):
# This is a docker index repo (ex: username/foobar or ubuntu)
return "docker.io", repo_name
return parts[0], parts[1]
def convert_to_hostname(url: str) -> str:
return url.replace("http://", "").replace("https://", "").split("/", 1)[0]
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