| #!/usr/bin/env python |
| |
| import argparse |
| import re |
| import subprocess |
| |
| from enum import Enum |
| |
| EXCLUDED_SUBJECTS = { |
| "AutoValue", |
| "avadoc", |
| "avaDoc", |
| "ava-doc", |
| "baz", # bazel, bazlet(s) |
| "Baz", |
| "class", |
| "efactor", |
| "format", |
| "Format", |
| "getter", |
| "gr-", |
| "immutab", |
| "IT", |
| "js", |
| "lint", |
| "method", |
| "module", |
| "naming", |
| "nits", |
| "nongoogle", |
| "prone", # error prone &co. |
| "register", |
| "Register", |
| "remove", |
| "Remove", |
| "rename", |
| "Rename", |
| "Revert", |
| "serializ", |
| "setter", |
| "spell", |
| "Spell", |
| "test", # testing, tests; unit or else |
| "Test", |
| "thread", |
| "tsetse", |
| "typescript", |
| "version", |
| } |
| |
| COMMIT_SHA1_PATTERN = r"^commit ([a-z0-9]+)$" |
| DATE_HEADER_PATTERN = r"Date: .+" |
| SUBJECT_SUBMODULES_PATTERN = r"^Update git submodules$" |
| UPDATE_SUBMODULE_PATTERN = r"\* Update ([a-z/\-]+) from branch '.+'" |
| SUBMODULE_SUBJECT_PATTERN = r"^- (.+)" |
| SUBMODULE_MERGE_PATTERN = r".+Merge .+" |
| ISSUE_ID_PATTERN = r"[a-zA-Z]+: [Ii]ssue ([0-9]+)" |
| CHANGE_ID_PATTERN = r"^Change-Id: [I0-9a-z]+$" |
| PLUGIN_PATTERN = r"plugins/([a-z\-]+)" |
| RELEASE_OPTION_PATTERN = r".+\.\.(v.+)" |
| RELEASE_TAG_PATTERN = r"v[0-9]+\.[0-9]+\.[0-9]+$" |
| |
| ISSUE_URL = "https://bugs.chromium.org/p/gerrit/issues/detail?id=" |
| CHECK_DISCLAIMER = "experimental and much slower" |
| GIT_COMMAND = "git" |
| UTF8 = "UTF-8" |
| |
| |
| def parse_args(): |
| parser = argparse.ArgumentParser( |
| description="Generate an initial release notes markdown file.", |
| formatter_class=argparse.ArgumentDefaultsHelpFormatter, |
| ) |
| parser.add_argument( |
| "-c", |
| "--check", |
| dest="check", |
| required=False, |
| default=False, |
| action="store_true", |
| help=f"check commits for previous releases; {CHECK_DISCLAIMER}", |
| ) |
| parser.add_argument("range", help="git log revision range") |
| return parser.parse_args() |
| |
| |
| def check_args(options): |
| if not options.check: |
| return None |
| release_option = re.search(RELEASE_OPTION_PATTERN, options.range) |
| if release_option is None: |
| print("Check option ignored; range doesn't end with release tag.") |
| return None |
| print(f"Check option used; {CHECK_DISCLAIMER}.") |
| return release_option.group(1) |
| |
| |
| def newly_released(commit_sha1, release): |
| if release is None: |
| return True |
| git_tag = [ |
| GIT_COMMAND, |
| "tag", |
| "--contains", |
| commit_sha1, |
| ] |
| process = subprocess.check_output(git_tag, stderr=subprocess.PIPE, encoding=UTF8) |
| verdict = True |
| for line in process.splitlines(): |
| line = line.strip() |
| if not re.match(rf"{re.escape(release)}$", line): |
| # Wrongfully pushed or malformed tags ignored. |
| # Preceding release-candidate (-rcN) tags treated as newly released. |
| verdict = not re.match(RELEASE_TAG_PATTERN, line) |
| return verdict |
| |
| |
| def open_git_log(options): |
| git_log = [ |
| GIT_COMMAND, |
| "log", |
| "--no-merges", |
| options.range, |
| ] |
| return subprocess.check_output(git_log, encoding=UTF8) |
| |
| |
| class Change: |
| subject = None |
| issues = set() |
| |
| |
| class Task(Enum): |
| start_commit = 1 |
| finish_headers = 2 |
| capture_subject = 3 |
| capture_submodule = 4 |
| capture_submodule_subject = 5 |
| finish_submodule_change = 6 |
| finish_commit = 7 |
| |
| |
| class Commit: |
| sha1 = None |
| subject = None |
| submodule = None |
| issues = set() |
| |
| def reset(self, signature, task): |
| if signature is not None: |
| self.sha1 = signature.group(1) |
| self.subject = None |
| self.submodule = None |
| self.issues = set() |
| return Task.finish_headers |
| return task |
| |
| |
| def parse_log(process, release): |
| commit = Commit() |
| commits = [] |
| submodules = dict() |
| submodule_change = None |
| task = Task.start_commit |
| for line in process.splitlines(): |
| line = line.strip() |
| if not line: |
| continue |
| if task == Task.start_commit: |
| task = commit.reset(re.search(COMMIT_SHA1_PATTERN, line), task) |
| elif task == Task.finish_headers: |
| if re.match(DATE_HEADER_PATTERN, line): |
| task = Task.capture_subject |
| elif task == Task.capture_subject: |
| if re.match(SUBJECT_SUBMODULES_PATTERN, line): |
| task = Task.capture_submodule |
| else: |
| commit.subject = line |
| task = Task.finish_commit |
| elif task == Task.capture_submodule: |
| commit.submodule = re.search(UPDATE_SUBMODULE_PATTERN, line).group(1) |
| if commit.submodule not in submodules: |
| submodules[commit.submodule] = [] |
| task = Task.capture_submodule_subject |
| elif task == Task.capture_submodule_subject: |
| submodule_subject = re.search(SUBMODULE_SUBJECT_PATTERN, line) |
| if submodule_subject is not None: |
| if not re.match(SUBMODULE_MERGE_PATTERN, line): |
| submodule_change = change(submodule_subject, submodules, commit) |
| task = Task.finish_submodule_change |
| else: |
| task = update_task(line, commit, task) |
| elif task == Task.finish_submodule_change: |
| submodule_issue = re.search(ISSUE_ID_PATTERN, line) |
| if submodule_issue is not None: |
| if submodule_change is not None: |
| issue_id = submodule_issue.group(1) |
| submodule_change.issues.add(issue_id) |
| else: |
| task = update_task(line, commit, task) |
| elif task == Task.finish_commit: |
| commit_issue = re.search(ISSUE_ID_PATTERN, line) |
| if commit_issue is not None: |
| commit.issues.add(commit_issue.group(1)) |
| else: |
| commit_end = re.match(CHANGE_ID_PATTERN, line) |
| if commit_end is not None: |
| commit = finish(commit, commits, release) |
| task = Task.start_commit |
| else: |
| raise RuntimeError("FIXME") |
| return commits, submodules |
| |
| |
| def change(submodule_subject, submodules, commit): |
| submodule_change = Change() |
| submodule_change.subject = submodule_subject.group(1) |
| for exclusion in EXCLUDED_SUBJECTS: |
| if exclusion in submodule_change.subject: |
| return None |
| for noted_change in submodules[commit.submodule]: |
| if noted_change.subject == submodule_change.subject: |
| return noted_change |
| escape_these(submodule_change) |
| submodule_change.issues = set() |
| submodules[commit.submodule].append(submodule_change) |
| return submodule_change |
| |
| |
| def update_task(line, commit, task): |
| update_end = re.search(COMMIT_SHA1_PATTERN, line) |
| if update_end is not None: |
| task = commit.reset(update_end, task) |
| return task |
| |
| |
| def finish(commit, commits, release): |
| if len(commit.issues) == 0: |
| for exclusion in EXCLUDED_SUBJECTS: |
| if exclusion in commit.subject: |
| return Commit() |
| for noted_commit in commits: |
| if noted_commit.subject == commit.subject: |
| return Commit() |
| if newly_released(commit.sha1, release): |
| escape_these(commit) |
| commits.append(commit) |
| else: |
| print(f"Previously released: commit {commit.sha1}") |
| return Commit() |
| |
| |
| def escape_these(in_change): |
| in_change.subject = in_change.subject.replace("<", "\\<") |
| in_change.subject = in_change.subject.replace(">", "\\>") |
| |
| |
| def print_commits(commits, md): |
| md.write("\n## Core Changes\n") |
| for commit in commits: |
| md.write(f"\n* {commit.subject}\n") |
| for issue in sorted(commit.issues): |
| md.write(f" [Issue {issue}]({ISSUE_URL}{issue})\n") |
| |
| |
| def print_submodules(submodules, md): |
| md.write("\n## Plugin Changes\n") |
| for submodule in sorted(submodules): |
| plugin = re.search(PLUGIN_PATTERN, submodule) |
| md.write(f"\n### {plugin.group(1)}\n") |
| for submodule_change in submodules[submodule]: |
| md.write(f"\n* {submodule_change.subject}\n") |
| for issue in sorted(submodule_change.issues): |
| md.write(f" [Issue {issue}]({ISSUE_URL}{issue})\n") |
| |
| |
| def print_notes(commits, submodules): |
| with open("release_noter.md", "w") as md: |
| md.write("# Release Notes\n") |
| print_submodules(submodules, md) |
| print_commits(commits, md) |
| |
| |
| if __name__ == "__main__": |
| script_options = parse_args() |
| release_tag = check_args(script_options) |
| change_log = open_git_log(script_options) |
| core_changes, submodule_changes = parse_log(change_log, release_tag) |
| print_notes(core_changes, submodule_changes) |
