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from __future__ import annotations
import datetime
import os
from pathlib import Path
from typing import TYPE_CHECKING
from ._version_cls import Version
from .config import Configuration
from .scm_workdir import Workdir
from .utils import data_from_mime
from .utils import do_ex
from .utils import require_command
from .utils import trace
from .version import meta
from .version import ScmVersion
from .version import tag_to_version
if TYPE_CHECKING:
from . import _types as _t
class HgWorkdir(Workdir):
COMMAND = "hg"
@classmethod
def from_potential_worktree(cls, wd: _t.PathT) -> HgWorkdir | None:
require_command(cls.COMMAND)
root, err, ret = do_ex("hg root", wd)
if ret:
return None
return cls(root)
def get_meta(self, config: Configuration) -> ScmVersion | None:
node: str
tags_str: str
bookmark: str
node_date_str: str
node, tags_str, bookmark, node_date_str = self.hg_log(
".", "{node}\n{tag}\n{bookmark}\n{date|shortdate}"
).split("\n")
# TODO: support bookmarks and topics (but nowadays bookmarks are
# mainly used to emulate Git branches, which is already supported with
# the dedicated class GitWorkdirHgClient)
branch, dirty_str, dirty_date = self.do(
["hg", "id", "-T", "{branch}\n{if(dirty, 1, 0)}\n{date|shortdate}"]
).split("\n")
dirty = bool(int(dirty_str))
# todo: fromiso
node_date = datetime.date(
*map(int, (dirty_date if dirty else node_date_str).split("-"))
)
if node.count("0") == len(node):
trace("initial node", self.path)
return meta(
"0.0", config=config, dirty=dirty, branch=branch, node_date=node_date
)
node = "h" + node[:7]
tags = tags_str.split()
if "tip" in tags:
# tip is not a real tag
tags.remove("tip")
if tags:
tag = tag_to_version(tags[0])
if tag:
return meta(tag, dirty=dirty, branch=branch, config=config)
try:
tag_str = self.get_latest_normalizable_tag()
if tag_str is None:
dist = self.get_distance_revs("")
else:
dist = self.get_distance_revs(tag_str)
if tag_str == "null" or tag_str is None:
tag = Version("0.0")
dist += 1
else:
tag = tag_to_version(tag_str, config=config)
assert tag is not None
if self.check_changes_since_tag(tag_str) or dirty:
return meta(
tag,
distance=dist,
node=node,
dirty=dirty,
branch=branch,
config=config,
node_date=node_date,
)
else:
return meta(tag, config=config, node_date=node_date)
except ValueError as e:
trace("error", e)
pass # unpacking failed, old hg
return None
def hg_log(self, revset: str, template: str) -> str:
cmd = ["hg", "log", "-r", revset, "-T", template]
return self.do(cmd)
def get_latest_normalizable_tag(self) -> str | None:
# Gets all tags containing a '.' (see #229) from oldest to newest
outlines = self.hg_log(
revset="ancestors(.) and tag('re:\\.')",
template="{tags}{if(tags, '\n', '')}",
).split()
if not outlines:
return None
tag = outlines[-1].split()[-1]
return tag
def get_distance_revs(self, rev1: str, rev2: str = ".") -> int:
revset = f"({rev1}::{rev2})"
out = self.hg_log(revset, ".")
return len(out) - 1
def check_changes_since_tag(self, tag: str | None) -> bool:
if tag == "0.0" or tag is None:
return True
revset = (
"(branch(.)" # look for revisions in this branch only
f" and tag({tag!r})::." # after the last tag
# ignore commits that only modify .hgtags and nothing else:
" and (merge() or file('re:^(?!\\.hgtags).*$'))"
f" and not tag({tag!r}))" # ignore the tagged commit itself
)
return bool(self.hg_log(revset, "."))
def parse(root: _t.PathT, config: Configuration | None = None) -> ScmVersion | None:
if not config:
config = Configuration(root=root)
if os.path.exists(os.path.join(root, ".hg/git")):
paths, _, ret = do_ex("hg path", root)
if not ret:
for line in paths.split("\n"):
if line.startswith("default ="):
path = Path(line.split()[2])
if path.name.endswith(".git") or (path / ".git").exists():
from .git import _git_parse_inner
from .hg_git import GitWorkdirHgClient
wd_hggit = GitWorkdirHgClient.from_potential_worktree(root)
if wd_hggit:
return _git_parse_inner(config, wd_hggit)
wd = HgWorkdir.from_potential_worktree(config.absolute_root)
if wd is None:
return None
return wd.get_meta(config)
def archival_to_version(
data: dict[str, str], config: Configuration | None = None
) -> ScmVersion:
trace("data", data)
node = data.get("node", "")[:12]
if node:
node = "h" + node
if "tag" in data:
return meta(data["tag"], config=config)
elif "latesttag" in data:
return meta(
data["latesttag"],
distance=int(data["latesttagdistance"]),
node=node,
config=config,
)
else:
return meta("0.0", node=node, config=config)
def parse_archival(root: _t.PathT, config: Configuration | None = None) -> ScmVersion:
archival = os.path.join(root, ".hg_archival.txt")
data = data_from_mime(archival)
return archival_to_version(data, config=config)
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