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type annotation improvements

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This commit is contained in:
Jan Petykiewicz 2024-07-29 21:59:02 -07:00
parent 7a871e4e91
commit 9b329f3b8b
1 changed files with 62 additions and 54 deletions
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116
lethe/lethe.py
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@ -3,7 +3,7 @@
Git snapshotting tool
"""
from typing import Sequence, Union, Optional
from typing import Sequence
import subprocess
import tempfile
import datetime
@ -11,7 +11,7 @@ import argparse
from itertools import chain
def _run(command: Union[str, Sequence[str]], **kwargs) -> str:
def _run(command: str | Sequence[str], **kwargs) -> str:
"""
Wrapper for `subprocess.run()`:
@ -34,7 +34,7 @@ def _run(command: Union[str, Sequence[str]], **kwargs) -> str:
return result.stdout.decode().strip()
def get_latest_commit(short: bool = True, cwd: Optional[str] = None) -> str:
def get_latest_commit(short: bool = True, cwd: str | None = None) -> str:
"""
Get the most recent commit's hash.
This includes non-lethe commits.
@ -43,14 +43,14 @@ def get_latest_commit(short: bool = True, cwd: Optional[str] = None) -> str:
return _run(f'git log --all -1 --format=%{fmt}', cwd=cwd)
def shorten_hash(sha: str, cwd: Optional[str] = None) -> str:
def shorten_hash(sha: str, cwd: str | None = None) -> str:
"""
Get the short version of a hash
"""
return _run(f'git rev-parse --short {sha}', cwd=cwd)
def get_root(cwd: Optional[str] = None) -> str:
def get_root(cwd: str | None = None) -> str:
"""
Get the root directory of a git repository
"""
@ -60,7 +60,7 @@ def get_root(cwd: Optional[str] = None) -> str:
return root
def get_obj(ref: str, cwd: Optional[str] = None) -> str:
def get_obj(ref: str, cwd: str | None = None) -> str:
"""
Transform a ref into its corresponding hash using git-rev-parse
"""
@ -68,25 +68,26 @@ def get_obj(ref: str, cwd: Optional[str] = None) -> str:
return sha
def get_commit(ref: str, cwd: Optional[str] = None) -> str:
def get_commit(ref: str, cwd: str | None = None) -> str:
"""
Transform a ref to a commit into its corresponding hash using git-rev-parse
"""
return get_obj(ref, cwd=cwd)
def get_tree(ref: str, cwd: Optional[str] = None) -> str:
def get_tree(ref: str, cwd: str | None = None) -> str:
"""
Take a ref to a commit, and return the hash of the tree it points to
"""
return get_obj(ref + ':', cwd=cwd)
def commit_tree(tree: str,
parents: Sequence[str],
message: Optional[str] = None,
cwd: Optional[str] = None,
) -> str:
def commit_tree(
tree: str,
parents: Sequence[str],
message: str | None = None,
cwd: str | None = None,
) -> str:
"""
Create a commit pointing to the given tree, with the specified parent commits and message.
Return the hash of the created commit.
@ -99,13 +100,14 @@ def commit_tree(tree: str,
return commit
def update_ref(target_ref: str,
target_commit: str,
old_commit: Optional[str] = None,
*,
message: str = 'new snapshot',
cwd: Optional[str] = None,
) -> str:
def update_ref(
target_ref: str,
target_commit: str,
old_commit: str | None = None,
*,
message: str = 'new snapshot',
cwd: str | None = None,
) -> str:
"""
Update `target_ref` to point to `target_commit`, optionally verifying that
it points `old_commit` before the update.
@ -118,12 +120,13 @@ def update_ref(target_ref: str,
return result_ref
def push_ref(remote: str = 'origin',
target_ref: str = 'refs/lethe/LATEST',
remote_ref: Optional[str] = None,
*,
cwd: Optional[str] = None,
) -> str:
def push_ref(
remote: str = 'origin',
target_ref: str = 'refs/lethe/LATEST',
remote_ref: str | None = None,
*,
cwd: str | None = None,
) -> str:
"""
Push `target_ref` to `remote` as `remote_ref`.
By default, `remote_ref` will be the same as `target_ref`.
@ -142,12 +145,13 @@ def push_ref(remote: str = 'origin',
return _run(['git', 'push', '--force', remote, target_ref + ':' + remote_ref], cwd=cwd)
def fetch_ref(remote: str = 'origin',
remote_ref: str = 'refs/lethe/LATEST',
target_ref: Optional[str] = None,
*,
cwd: Optional[str] = None,
) -> str:
def fetch_ref(
remote: str = 'origin',
remote_ref: str = 'refs/lethe/LATEST',
target_ref: str | None = None,
*,
cwd: str | None = None,
) -> str:
"""
Fetch `remote_ref` from `remote` as `target_ref`.
By default, `target_ref` will be the same as `remote_ref`.
@ -166,20 +170,22 @@ def fetch_ref(remote: str = 'origin',
return _run(['git', 'fetch', '--force', remote, remote_ref + ':' + target_ref], cwd=cwd)
def deref_symref(ref: str,
*,
cwd: Optional[str] = None,
) -> str:
def deref_symref(
ref: str,
*,
cwd: str | None = None,
) -> str:
"""
Dereference a symbolic ref
"""
return _run(['git', 'symbolic-ref', '--quiet', ref], cwd=cwd)
def find_merge_base(commits: Sequence[str],
*,
cwd: Optional[str] = None,
) -> str:
def find_merge_base(
commits: Sequence[str],
*,
cwd: str | None = None,
) -> str:
"""
Find the "best common ancestor" commit.
@ -200,7 +206,7 @@ def find_merge_base(commits: Sequence[str],
return base
def snap_tree(*, cwd: Optional[str] = None) -> str:
def snap_tree(*, cwd: str | None = None) -> str:
"""
Create a new tree, consisting of all non-ignored files in the repository.
Return the hash of the tree.
@ -214,12 +220,13 @@ def snap_tree(*, cwd: Optional[str] = None) -> str:
return tree
def snap_ref(parent_refs: Sequence[str],
target_refs: Sequence[str],
message: Optional[str] = None,
*,
cwd: Optional[str] = None,
) -> str:
def snap_ref(
parent_refs: Sequence[str],
target_refs: Sequence[str],
message: str | None = None,
*,
cwd: str | None = None,
) -> str:
"""
`message` is used as the commit message.
"""
@ -227,7 +234,7 @@ def snap_ref(parent_refs: Sequence[str],
parent_commits = [c for c in [get_commit(p, cwd=cwd) for p in parent_refs] if c]
old_commits = [get_commit(t, cwd=cwd) for t in target_refs]
commit = commit_tree(new_tree, set(parent_commits), message, cwd=cwd)
commit = commit_tree(new_tree, list(set(parent_commits)), message, cwd=cwd)
for target_ref, old_commit in zip(target_refs, old_commits):
# update ref to point to commit, or create new ref
@ -237,12 +244,13 @@ def snap_ref(parent_refs: Sequence[str],
return commit
def snap(parent_refs: Optional[Sequence[str]] = None,
target_refs: Optional[Sequence[str]] = None,
message: Optional[str] = None,
*,
cwd: Optional[str] = None,
) -> str:
def snap(
parent_refs: Sequence[str] | None = None,
target_refs: Sequence[str] | None = None,
message: str | None = None,
*,
cwd: str | None = None,
) -> str:
"""
Create a new commit, containing all non-ignored files.