view contrib/relnotes @ 44479:7518ea76eff4

git: add readfast() method to manifest

Mysteriously, on a different system a handful of things don't work
without this, including log. This is especially odd to be because log
works in the test. In any event, it's legal for readfast() to just
return read(), so that's what we do.

Differential Revision: https://phab.mercurial-scm.org/D8262

#!/usr/bin/env python3
"""Generate release notes from our commit log.

This uses the relnotes extension directives when they're available,
and falls back to our old pre-relnotes logic that used to live in the
release-tools repo.
"""
import argparse
import re
import subprocess

rules = {
    # keep
    r"\(issue": 100,
    r"\(BC\)": 100,
    r"\(API\)": 100,
    r"\(SEC\)": 100,
    # core commands, bump up
    r"(commit|files|log|pull|push|patch|status|tag|summary)(|s|es):": 20,
    r"(annotate|alias|branch|bookmark|clone|graft|import|verify).*:": 20,
    # extensions, bump up
    r"(mq|shelve|rebase):": 20,
    # newsy
    r": deprecate": 20,
    r": new.*(extension|flag|module)": 10,
    r"( ability|command|feature|option|support)": 10,
    # experimental
    r"hg-experimental": 20,
    r"(from|graduate).*experimental": 15,
    r"(hide|mark).*experimental": -10,
    # bug-like?
    r"(fix|don't break|improve)": 7,
    r"(not|n't|avoid|fix|prevent).*crash": 10,
    r"vulnerab": 10,
    # boring stuff, bump down
    r"^contrib": -5,
    r"debug": -5,
    r"help": -5,
    r"minor": -5,
    r"(doc|metavar|bundle2|obsolete|obsmarker|rpm|setup|debug\S+:)": -15,
    r"(check-code|check-commit|check-config|import-checker)": -20,
    r"(flake8|lintian|pyflakes|pylint)": -20,
    # cleanups and refactoring
    r"(clean ?up|white ?space|spelling|quoting)": -20,
    r"(flatten|dedent|indent|nesting|unnest)": -20,
    r"(typo|hint|note|comment|TODO|FIXME)": -20,
    r"(style:|convention|one-?liner)": -20,
    r"(argument|absolute_import|attribute|assignment|mutable)": -15,
    r"(scope|True|False)": -10,
    r"(unused|useless|unnecessar|superfluous|duplicate|deprecated)": -10,
    r"(redundant|pointless|confusing|uninitialized|meaningless|dead)": -10,
    r": (drop|remove|delete|rip out)": -10,
    r": (inherit|rename|simplify|naming|inline)": -10,
    r"(correct doc|docstring|document .* method)": -20,
    r"(abstract|factor|extract|prepare|split|replace| import)": -20,
    r": add.*(function|method|implementation|example)": -10,
    r": (move|extract) .* (to|into|from|out of)": -20,
    r": implement ": -5,
    r": use .* implementation": -20,
    r": use .* instead of": -20,
    # code
    r"_": -10,
    r"__": -5,
    r"\(\)": -5,
    r"\S\S\S+\.\S\S\S\S+": -5,
    # dumb keywords
    r"\S+/\S+:": -10,
    r"\S+\.\S+:": -10,
    # python compatibility
    r"[Pp]y(|thon) ?[23]": -20,
    r"pycompat": -20,
    r"(coerce|convert|encode) .*to (byte|sys|)(s|str|string)": -20,
    # tests
    r"^test(|s|ing|runner|-\S+):": -20,
    r"^(f|hghave|run-tests):": -20,
    r"add.* tests?": -20,
    r"(buildbot|fuzz|mock|ratchet)": -10,
    # drop
    r"^i18n-": -50,
    r"^i18n:.*(hint|comment)": -50,
    r"perf:": -50,
    r"Added.*for changeset": -50,
    r"^_": -50,
}

cutoff = 10
commits = []

groupings = [
    (r"util|parsers|repo|ctx|context|revlog|filelog|alias|cmdutil", "core"),
    (r"revset|template|ui|dirstate|hook|i18n|transaction|wire|vfs", "core"),
    (r"dispatch|exchange|localrepo|streamclone|color|pager", "core"),
    (r"hgweb|paper|coal|gitweb|monoblue|spartan", "hgweb"),
    (r"pull|push|revert|resolve|annotate|bookmark|branch|clone", "commands"),
    (r"commands|commit|config|files|graft|import|log|merge|patch", "commands"),
    (r"phases|status|summary|amend|tag|help|verify", "commands"),
    (r"rebase|mq|convert|eol|histedit|largefiles", "extensions"),
    (r"shelve|unshelve", "extensions"),
]


def wikify(desc):
    desc = desc.replace("(issue", "(Bts:issue")
    desc = re.sub(r"\b([0-9a-f]{12})\b", r"Cset:\1", desc)
    # stop ParseError from being recognized as a (nonexistent) wiki page
    desc = re.sub(r" ([A-Z][a-z]+[A-Z][a-z]+)\b", r" !\1", desc)
    # prevent wiki markup of magic methods
    desc = re.sub(r"\b(\S*__\S*)\b", r"`\1`", desc)
    return desc


def main():
    desc = "example: %(prog)s 4.7.2 --stoprev 4.8rc0"
    ap = argparse.ArgumentParser(description=desc)
    ap.add_argument(
        "startrev",
        metavar="REV",
        type=str,
        help=(
            "Starting revision for the release notes. This revision "
            "won't be included, but later revisions will."
        ),
    )
    ap.add_argument(
        "--stoprev",
        metavar="REV",
        type=str,
        default="@",
        help=(
            "Stop revision for release notes. This revision will be included,"
            " but no later revisions will. This revision needs to be "
            "a descendant of startrev."
        ),
    )
    args = ap.parse_args()
    fromext = subprocess.check_output(
        [
            "hg",
            "--config",
            "extensions.releasenotes=",
            "releasenotes",
            "-r",
            "only(%s, %s)" % (args.stoprev, args.startrev),
        ]
    ).decode("utf-8")
    # Find all release notes from un-relnotes-flagged commits.
    for entry in sorted(
        subprocess.check_output(
            [
                "hg",
                "log",
                "-r",
                "only(%s, %s) - merge()" % (args.stoprev, args.startrev),
                "-T",
                r"{desc|firstline}\n",
            ]
        )
        .decode("utf-8")
        .splitlines()
    ):
        desc = entry.replace("`", "'")

        score = 0
        for rule, val in rules.items():
            if re.search(rule, desc):
                score += val

        if score >= cutoff:
            commits.append(wikify(desc))
    # Group unflagged notes.
    groups = {}
    bcs = []
    apis = []

    for d in commits:
        if "(BC)" in d:
            bcs.append(d)
        if "(API)" in d:
            apis.append(d)
        for rule, g in groupings:
            if re.match(rule, d):
                groups.setdefault(g, []).append(d)
                break
        else:
            groups.setdefault("unsorted", []).append(d)
    print(fromext)
    # print legacy release notes sections
    for g in sorted(groups):
        print("\n=== %s ===" % g)
        for d in sorted(groups[g]):
            print(" * %s" % d)

    if bcs:
        print("\n=== Behavior Changes ===\n")

    for d in sorted(bcs):
        print(" * %s" % d)

    if apis:
        print("\n=== Internal API Changes ===\n")

    for d in sorted(apis):
        print(" * %s" % d)


if __name__ == "__main__":
    main()