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| -rwxr-xr-x | scripts/wrap-and-sort | 496 |
1 files changed, 496 insertions, 0 deletions
diff --git a/scripts/wrap-and-sort b/scripts/wrap-and-sort new file mode 100755 index 0000000..2e2a53f --- /dev/null +++ b/scripts/wrap-and-sort @@ -0,0 +1,496 @@ +#!/usr/bin/python3 +# +# Copyright (C) 2010-2018, Benjamin Drung <bdrung@debian.org> +# 2010, Stefano Rivera <stefanor@ubuntu.com> +# +# Permission to use, copy, modify, and/or distribute this software for any +# purpose with or without fee is hereby granted, provided that the above +# copyright notice and this permission notice appear in all copies. +# +# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +# pylint: disable=invalid-name +# pylint: enable=invalid-name + +import argparse +import glob +import operator +import os +import re +import sys + +from devscripts.control import ( + HAS_FULL_RTS_FORMATTING, + HAS_RTS_PARSER, + Control, + wrap_and_sort_formatter, +) + +try: + from debian._deb822_repro import LIST_COMMA_SEPARATED_INTERPRETATION +except ImportError: + LIST_COMMA_SEPARATED_INTERPRETATION = object() + + +CONTROL_LIST_FIELDS = ( + "Breaks", + "Build-Conflicts", + "Build-Conflicts-Arch", + "Build-Conflicts-Indep", + "Build-Depends", + "Build-Depends-Arch", + "Build-Depends-Indep", + "Built-Using", + "Conflicts", + "Depends", + "Enhances", + "Pre-Depends", + "Provides", + "Recommends", + "Replaces", + "Suggests", + "Xb-Npp-MimeType", +) + +SUPPORTED_FILES = ( + "clean", + "control", + "control*.in", + "copyright", + "copyright.in", + "dirs", + "*.dirs", + "docs", + "*.docs", + "examples", + "*.examples", + "info", + "*.info", + "install", + "*.install", + "links", + "*.links", + "mainscript", + "*.maintscript", + "manpages", + "*.manpages", + "tests/control", +) + + +def erase_and_write(file_ob, data): + """When a file is opened via r+ mode, replaces its content with data""" + file_ob.seek(0) + file_ob.write(data) + file_ob.truncate() + + +class WrapAndSortControl(Control): + def __init__(self, filename, args): + # The Control module supports the RTS parser with python-debian 0.1.43. + # However, the `wrap_and_sort_formatter` requires 0.1.44. The command line + # option check handles the compatibility check for now. + super().__init__(filename, use_rts_parser=args.rts_parser) + self.args = args + self._formatter = None + if args.rts_parser and HAS_FULL_RTS_FORMATTING: + max_line_length = args.max_line_length + self._formatter = wrap_and_sort_formatter( + 1 if args.short_indent else "FIELD_NAME_LENGTH", + trailing_separator=args.trailing_comma, + immediate_empty_line=args.short_indent, + max_line_length_one_liner=0 if args.wrap_always else max_line_length, + ) + + def wrap_and_sort(self): + for paragraph in self.paragraphs: + for field in CONTROL_LIST_FIELDS: + if field in paragraph: + self._wrap_field(paragraph, field, True) + if "Uploaders" in paragraph: + self._wrap_field(paragraph, "Uploaders", False) + if "Architecture" in paragraph: + archs = set(paragraph["Architecture"].split()) + # Sort, with wildcard entries (such as linux-any) first: + archs = sorted(archs, key=lambda x: ("any" not in x, x)) + paragraph["Architecture"] = " ".join(archs) + + if self.args.sort_binary_packages: + if self.filename.endswith("tests/control"): + return + first = self.paragraphs[: 1 + int(self.args.keep_first)] + sortable = self.paragraphs[1 + int(self.args.keep_first) :] + sort_key = operator.itemgetter("Package") + self.paragraphs = first + sorted(sortable, key=sort_key) + + def _wrap_field(self, control, entry, sort): + if self.is_roundtrip_safe: + self._wrap_field_rts(control, entry, sort) + else: + self._wrap_field_deb822(control, entry, sort) + + def _wrap_field_rts(self, control, entry, sort): + view = control.as_interpreted_dict_view(LIST_COMMA_SEPARATED_INTERPRETATION) + with view[entry] as field_content: + seen = set() + for package_ref in field_content.iter_value_references(): + value = package_ref.value + new_value = " | ".join(x.strip() for x in value.split("|")) + if not sort or new_value not in seen: + package_ref.value = new_value + seen.add(new_value) + else: + package_ref.remove() + if sort: + field_content.sort(key=_sort_packages_key) + if self._formatter: + field_content.value_formatter(self._formatter) + field_content.reformat_when_finished() + + def _wrap_field_deb822(self, control, entry, sort): + # An empty element is not explicitly disallowed by Policy but known to + # break QA tools, so remove any + packages = [x.strip() for x in control[entry].split(",") if x.strip()] + + # Sanitize alternative packages. E.g. "a|b |c" -> "a | b | c" + packages = [" | ".join(x.strip() for x in p.split("|")) for p in packages] + + if sort: + # Remove duplicate entries + packages = set(packages) + packages = sort_list(packages) + + length = len(entry) + sum(2 + len(package) for package in packages) + if self.args.wrap_always or length > self.args.max_line_length: + indentation = " " + if not self.args.short_indent: + indentation *= len(entry) + len(": ") + packages_with_indention = [indentation + x for x in packages] + packages_with_indention = ",\n".join(packages_with_indention) + if self.args.trailing_comma: + packages_with_indention += "," + if self.args.short_indent: + control[entry] = "\n" + packages_with_indention + else: + control[entry] = packages_with_indention.strip() + else: + new_value = ", ".join(packages) + if self.args.trailing_comma: + new_value += "," + control[entry] = new_value + + def check_changed(self): + """Checks if the content has changed in the control file""" + content = self.dump() + with open(self.filename, "r", encoding="utf8") as control_file: + if content != control_file.read(): + return True + return False + + +class InstallContent: + __slots__ = ("content", "comments") + + def __init__(self, content, comments=None): + self.content = content + self.comments = comments + + def __str__(self): + comments = "\n".join(self.comments) + "\n" if self.comments else "" + return comments + self.content + + def __eq__(self, other): + return self.content == other.content + + def __lt__(self, other): + return self.content < other.content + + +class Install: + def __init__(self, filename, args): + self.content = None + self.filename = None + self.args = args + self.leading_comments = None + self.trailing_comments = None + self.open(filename) + + def open(self, filename): + assert os.path.isfile(filename), f"{filename} does not exist." + self.filename = filename + comments = [] + content = [] + with open(filename, encoding="utf8") as f: + # When reading a debhelper file, we want to preserve blocks of comments. + # + # For the purpose of wrap-and-sort, we generally associate comments with + # a line of (non-whitespace) content. Though as special cases, we also + # preserve a file starting with a comment (with an empty line before the + # first content to distinguish it from a comment to that comment line) as + # well as trailing comments (i.e. comments before EOF). + for line in f: + line = line.strip() + if not line: + if comments and not content: + self.leading_comments = InstallContent("", comments=comments) + comments = [] + continue + if line[0] == "#": + comments.append(line) + continue + if comments: + content.append(InstallContent(line, comments=comments)) + comments = [] + else: + content.append(InstallContent(line, comments=None)) + self.trailing_comments = comments + self.content = content + + def save(self): + to_write = self._serialize_content() + + with open(self.filename, "r+", encoding="utf8") as install_file: + content = install_file.read() + if to_write != content: + if not self.args.dry_run: + erase_and_write(install_file, to_write) + return True + return False + + def _serialize_content(self): + elements = [] + if self.leading_comments: + elements.append(str(self.leading_comments)) + elements.extend(str(x) for x in self.content) + if self.trailing_comments: + # Add a space between the last content and the trailing comments + # for readability + elements.append("\n" + "\n".join(self.trailing_comments)) + return "\n".join(elements) + "\n" + + def sort(self): + self.content = sorted(self.content) + + +def remove_trailing_whitespaces(filename, args): + assert os.path.isfile(filename), f"{filename} does not exist." + with open(filename, "br+") as file_object: + content = file_object.read() + if not content: + return True + new_content = content.strip() + b"\n" + new_content = b"\n".join([line.rstrip() for line in new_content.split(b"\n")]) + if new_content != content: + if not args.dry_run: + erase_and_write(file_object, new_content) + return True + return False + + +def sort_list(unsorted_list): + return sorted(unsorted_list, key=_sort_packages_key) + + +def _sort_packages_key(package): + # Sort dependencies starting with a "real" package name before ones starting + # with a substvar + return 0 if re.match("[a-z0-9]", package) else 1, package + + +def wrap_and_sort(args): + modified_files = [] + control_files = [f for f in args.files if re.search("/control[^/]*$", f)] + for control_file in control_files: + if args.verbose: + print(control_file) + control = WrapAndSortControl(control_file, args) + if args.cleanup: + control.strip_trailing_whitespace_on_save = True + control.wrap_and_sort() + if control.check_changed(): + if not args.dry_run: + control.save() + modified_files.append(control_file) + + copyright_files = [f for f in args.files if re.search("/copyright[^/]*$", f)] + for copyright_file in copyright_files: + if args.verbose: + print(copyright_file) + if remove_trailing_whitespaces(copyright_file, args): + modified_files.append(copyright_file) + + pattern = "(dirs|docs|examples|info|install|links|maintscript|manpages)$" + install_files = [f for f in args.files if re.search(pattern, f)] + for install_file in sorted(install_files): + if args.verbose: + print(install_file) + install = Install(install_file, args) + install.sort() + if install.save(): + modified_files.append(install_file) + + return modified_files + + +def get_files(debian_directory): + """Returns a list of files that should be wrapped and sorted.""" + files = [] + for supported_files in SUPPORTED_FILES: + file_pattern = os.path.join(debian_directory, supported_files) + files.extend( + file_name + for file_name in glob.glob(file_pattern) + if not os.access(file_name, os.X_OK) + ) + return files + + +def main(): + script_name = os.path.basename(sys.argv[0]) + epilog = f"See {script_name}(1) for more info." + parser = argparse.ArgumentParser(epilog=epilog) + + # Remember to keep doc/wrap-and-sort.1 updated! + parser.add_argument( + "-a", + "--wrap-always", + action="store_true", + default=False, + help="wrap lists even if they do not exceed the line length limit", + ) + parser.add_argument( + "-s", + "--short-indent", + dest="short_indent", + help="only indent wrapped lines by one space" + " (default is in-line with the field name)", + action="store_true", + default=False, + ) + parser.add_argument( + "-b", + "--sort-binary-packages", + help="Sort binary package paragraphs by name", + dest="sort_binary_packages", + action="store_true", + default=False, + ) + parser.add_argument( + "-k", + "--keep-first", + help="When sorting binary package paragraphs, leave the first one at the top." + " Unqualified debhelper configuration files are applied to the first package.", + dest="keep_first", + action="store_true", + default=False, + ) + parser.add_argument( + "-n", + "--no-cleanup", + help="do not remove trailing whitespaces", + dest="cleanup", + action="store_false", + default=True, + ) + parser.add_argument( + "-t", + "--trailing-comma", + help="add trailing comma", + dest="trailing_comma", + action="store_true", + default=False, + ) + parser.add_argument( + "-d", + "--debian-directory", + dest="debian_directory", + help="location of the 'debian' directory (default: ./debian)", + metavar="PATH", + default="debian", + ) + parser.add_argument( + "-f", + "--file", + metavar="FILE", + dest="files", + action="append", + default=[], + help="Wrap and sort only the specified file.", + ) + parser.add_argument( + "-v", + "--verbose", + help="print all files that are touched", + dest="verbose", + action="store_true", + default=False, + ) + parser.add_argument( + "--max-line-length", + type=int, + default=79, + help="set maximum allowed line length before wrapping (default: %(default)i)", + ) + parser.add_argument( + "-N", + "--dry-run", + dest="dry_run", + action="store_true", + default=False, + help="do not modify any file, instead only print the files" + " that would be modified", + ) + parser.add_argument( + "--experimental-rts-parser", + dest="rts_parser", + action="store_true", + default=False, + help="Use the round-safe parser, which can preserve most comments. The option" + " is here to opt-in to using while the feature matures. Some options are not" + " available with this feature. Note this option will eventually be removed." + " Please do not include it in scripts / functionality that requires backwards" + " compatibility", + ) + + args = parser.parse_args() + use_rts_parser = HAS_RTS_PARSER + if use_rts_parser and not HAS_FULL_RTS_FORMATTING: + # Cases where we might have some but not full support. + if args.short_indent or not args.wrap_always or not args.trailing_comma: + use_rts_parser = False + setattr(args, "rts_parser", use_rts_parser) + + if not os.path.isdir(args.debian_directory): + parser.error( + f'Debian directory not found, expecting "{args.debian_directory}".' + ) + + not_found = [f for f in args.files if not os.path.isfile(f)] + if not_found: + parser.error(f"Specified files not found: {', '.join(not_found)}") + + if not args.files: + args.files = get_files(args.debian_directory) + + modified_files = wrap_and_sort(args) + + # Only report at the end, to avoid potential clash with --verbose + if modified_files and (args.verbose or args.dry_run): + if args.dry_run: + header = "--- Dry run, these files would be modified ---" + else: + header = "--- Modified files ---" + print(header) + print("\n".join(modified_files)) + elif args.verbose: + print("--- No file needs modification ---") + + +if __name__ == "__main__": + main() |