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from collections import deque
from datetime import datetime, timedelta, timezone
from pygit2 import Repository as GitRepository, Tag
from jinja2 import Markup, escape
from scmsrht.redis import redis
from stat import filemode
import pygit2
import json
def trim_commit(msg):
if "\n" not in msg:
return msg
return msg[:msg.index("\n")]
def commits_since_rev(repo, rev):
i = 0
for commit in repo.walk(repo.head.target):
if commit.id == rev:
break
return i
def commit_time(commit):
author = commit.author if hasattr(commit, 'author') else commit.tagger
# Time handling in python is so dumb
try:
tzinfo = timezone(timedelta(minutes=author.offset))
tzaware = datetime.fromtimestamp(float(author.time), tzinfo)
diff = datetime.now(timezone.utc) - tzaware
return datetime.utcnow() - diff
except:
return datetime.utcnow()
def _get_ref(repo, ref):
return repo._get(ref)
class Repository(GitRepository):
def __init__(self, *args, **kwargs):
super().__init__(*args, **kwargs)
def __enter__(self):
return self
def __exit__(self, *_):
self.free()
def get(self, ref):
return _get_ref(self, ref)
def _get(self, ref):
return super().get(ref)
def default_branch(self):
branch = self.branches.get("master")
if not branch:
branch = list(self.branches.local)[0]
branch = self.branches.get(branch)
return branch
class AnnotatedTreeEntry:
def __init__(self, repo, entry):
self._entry = entry
self._repo = repo
self.commit = None
if entry:
self.id = entry.id.hex
self.name = entry.name
self.type = entry.type
self.filemode = entry.filemode
def fetch_blob(self):
if self.type == "tree":
self.tree = self._repo.get(self.id)
else:
self.blob = self._repo.get(self.id)
return self
def serialize(self):
return {
"id": self.id,
"name": self.name,
"type": self.type,
"filemode": self.filemode,
"commit": (self.commit.id.hex
if hasattr(self, "commit") and self.commit else None),
}
@staticmethod
def deserialize(res, repo):
_id = res["id"]
self = AnnotatedTreeEntry(repo, None)
self.id = res["id"]
self.name = res["name"]
self.type = res["type"]
self.filemode = res["filemode"]
self.commit = repo.get(res["commit"]) if "commit" in res else None
return self
def __hash__(self):
return hash(f"{self.id}:{self.name}")
def __eq__(self, other):
return self.id == other.id and self.name == other.name
def __repr__(self):
return f"<AnnotatedTreeEntry {self.name} {self.id}>"
def annotate_tree(repo, tree, commit):
return [AnnotatedTreeEntry(repo, entry).fetch_blob() for entry in tree]
# TODO: This is slow and broken
key = f"git.sr.ht:git:tree:{tree.id.hex}"
cache = redis.get(key)
if cache:
try:
cache = json.loads(cache.decode())
return [AnnotatedTreeEntry.deserialize(
e, repo).fetch_blob() for e in cache.values()]
except:
redis.delete(key)
tree = { entry.id.hex: AnnotatedTreeEntry(
repo, entry) for entry in tree }
parents = deque(commit.parents)
left_tree = set(v for v in tree.values())
unfinished = set(left_tree)
if not any(commit.parents):
return [entry.fetch_blob() for entry in tree.values()]
parent = commit
for commit in repo.walk(commit.id, pygit2.GIT_SORT_TIME):
if not any(unfinished):
break
right_tree = { entry.id.hex: AnnotatedTreeEntry(repo, entry)
for entry in parent.tree }
right_tree = set(v for v in right_tree.values())
diff = left_tree - right_tree
for entry in diff:
if entry.id in tree:
tree[entry.id].commit = commit
unfinished = unfinished - diff
left_tree = right_tree
parent = commit
cache = {entry.name: entry.serialize() for entry in tree.values()}
cache = json.dumps(cache)
redis.setex(key, timedelta(days=30), cache)
return [entry.fetch_blob() for entry in tree.values()]
def _diffstat_name(delta):
if delta.status == pygit2.GIT_DELTA_DELETED:
return Markup(escape(delta.old_file.path))
if delta.old_file.path == delta.new_file.path:
return Markup(
f"<a href='#{escape(delta.old_file.path)}'>" +
f"{escape(delta.old_file.path)}" +
f"</a>")
# Based on git/diff.c
pfx_length = 0
old_path = delta.old_file.path
new_path = delta.new_file.path
for i in range(max(len(old_path), len(new_path))):
if i >= len(old_path) or i >= len(new_path):
break
if old_path[i] == '/':
pfx_length = i + 1
# TODO: detect common suffix
if pfx_length != 0:
return (f"{delta.old_file.path[:pfx_length]}{{" +
f"{delta.old_file.path[pfx_length:]} => {delta.new_file.path[pfx_length:]}" +
f"}}")
return f"{delta.old_file.path} => {delta.new_file.path}"
def _diffstat_line(delta, patch):
name = _diffstat_name(delta)
change = ""
if delta.status not in [
pygit2.GIT_DELTA_ADDED,
pygit2.GIT_DELTA_DELETED,
]:
if delta.old_file.mode != delta.new_file.mode:
change = Markup(
f" <span title='{delta.old_file.mode}'>" +
f"{filemode(delta.old_file.mode)}</span> => " +
f"<span title='{delta.new_file.mode}'>" +
f"{filemode(delta.new_file.mode)}</span>")
return Markup(f"{delta.status_char()} {name}{change}\n")
def diffstat(diff):
stat = Markup(f"""{diff.stats.files_changed} files changed, <strong
class="text-success">{diff.stats.insertions
}</strong> insertions(+), <strong
class="text-danger">{diff.stats.deletions
}</strong> deletions(-)\n\n""")
for delta, patch in zip(diff.deltas, diff):
stat += _diffstat_line(delta, patch)
return stat
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