mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-05 08:14:19 +08:00
13123da89a
Re-format all Python files using black [1] version 21.4b0. The goal is
that from now on, we keep all Python files formatted using black. And
that we never have to discuss formatting during review (for these files
at least) ever again.
One change is needed in gdb.python/py-prettyprint.exp, because it
matches the string representation of an exception, which shows source
code. So the change in formatting must be replicated in the expected
regexp.
To document our usage of black I plan on adding this to the "GDB Python
Coding Standards" wiki page [2]:
--8<--
All Python source files under the `gdb/` directory must be formatted
using black version 21.4b0.
This specific version can be installed using:
$ pip3 install 'black == 21.4b0'
All you need to do to re-format files is run `black <file/directory>`,
and black will re-format any Python file it finds in there. It runs
quite fast, so the simplest is to do:
$ black gdb/
from the top-level.
If you notice that black produces changes unrelated to your patch, it's
probably because someone forgot to run it before you. In this case,
don't include unrelated hunks in your patch. Push an obvious patch
fixing the formatting and rebase your work on top of that.
-->8--
Once this is merged, I plan on setting a up an `ignoreRevsFile`
config so that git-blame ignores this commit, as described here:
https://github.com/psf/black#migrating-your-code-style-without-ruining-git-blame
I also plan on working on a git commit hook (checked in the repo) to
automatically check the formatting of the Python files on commit.
[1] https://pypi.org/project/black/
[2] https://sourceware.org/gdb/wiki/Internals%20GDB-Python-Coding-Standards
gdb/ChangeLog:
* Re-format all Python files using black.
gdb/testsuite/ChangeLog:
* Re-format all Python files using black.
* gdb.python/py-prettyprint.exp (run_lang_tests): Adjust.
Change-Id: I28588a22c2406afd6bc2703774ddfff47cd61919
419 lines
12 KiB
Python
419 lines
12 KiB
Python
#! /usr/bin/env python3
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# Copyright (C) 2011-2021 Free Software Foundation, Inc.
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#
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# This file is part of GDB.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""copyright.py
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This script updates the list of years in the copyright notices in
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most files maintained by the GDB project.
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Usage: cd src/gdb && python copyright.py
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Always review the output of this script before committing it!
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A useful command to review the output is:
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% filterdiff -x \*.c -x \*.cc -x \*.h -x \*.exp updates.diff
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This removes the bulk of the changes which are most likely to be correct.
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"""
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import datetime
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import locale
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import os
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import os.path
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import subprocess
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import sys
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def get_update_list():
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"""Return the list of files to update.
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Assumes that the current working directory when called is the root
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of the GDB source tree (NOT the gdb/ subdirectory!). The names of
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the files are relative to that root directory.
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"""
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result = []
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for gdb_dir in (
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"gdb",
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"gdbserver",
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"gdbsupport",
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"gnulib",
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"sim",
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"include/gdb",
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):
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for root, dirs, files in os.walk(gdb_dir, topdown=True):
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for dirname in dirs:
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reldirname = "%s/%s" % (root, dirname)
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if (
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dirname in EXCLUDE_ALL_LIST
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or reldirname in EXCLUDE_LIST
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or reldirname in NOT_FSF_LIST
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or reldirname in BY_HAND
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):
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# Prune this directory from our search list.
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dirs.remove(dirname)
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for filename in files:
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relpath = "%s/%s" % (root, filename)
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if (
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filename in EXCLUDE_ALL_LIST
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or relpath in EXCLUDE_LIST
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or relpath in NOT_FSF_LIST
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or relpath in BY_HAND
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):
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# Ignore this file.
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pass
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else:
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result.append(relpath)
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return result
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def update_files(update_list):
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"""Update the copyright header of the files in the given list.
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We use gnulib's update-copyright script for that.
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"""
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# We want to use year intervals in the copyright notices, and
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# all years should be collapsed to one single year interval,
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# even if there are "holes" in the list of years found in the
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# original copyright notice (OK'ed by the FSF, case [gnu.org #719834]).
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os.environ["UPDATE_COPYRIGHT_USE_INTERVALS"] = "2"
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# Perform the update, and save the output in a string.
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update_cmd = ["bash", "gnulib/import/extra/update-copyright"]
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update_cmd += update_list
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p = subprocess.Popen(
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update_cmd,
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT,
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encoding=locale.getpreferredencoding(),
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)
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update_out = p.communicate()[0]
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# Process the output. Typically, a lot of files do not have
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# a copyright notice :-(. The update-copyright script prints
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# a well defined warning when it did not find the copyright notice.
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# For each of those, do a sanity check and see if they may in fact
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# have one. For the files that are found not to have one, we filter
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# the line out from the output, since there is nothing more to do,
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# short of looking at each file and seeing which notice is appropriate.
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# Too much work! (~4,000 files listed as of 2012-01-03).
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update_out = update_out.splitlines(keepends=False)
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warning_string = ": warning: copyright statement not found"
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warning_len = len(warning_string)
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for line in update_out:
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if line.endswith(warning_string):
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filename = line[:-warning_len]
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if may_have_copyright_notice(filename):
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print(line)
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else:
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# Unrecognized file format. !?!
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print("*** " + line)
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def may_have_copyright_notice(filename):
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"""Check that the given file does not seem to have a copyright notice.
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The filename is relative to the root directory.
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This function assumes that the current working directory is that root
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directory.
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The algorigthm is fairly crude, meaning that it might return
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some false positives. I do not think it will return any false
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negatives... We might improve this function to handle more
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complex cases later...
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"""
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# For now, it may have a copyright notice if we find the word
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# "Copyright" at the (reasonable) start of the given file, say
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# 50 lines...
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MAX_LINES = 50
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# We don't really know what encoding each file might be following,
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# so just open the file as a byte stream. We only need to search
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# for a pattern that should be the same regardless of encoding,
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# so that should be good enough.
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fd = open(filename, "rb")
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lineno = 1
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for line in fd:
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if b"Copyright" in line:
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return True
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lineno += 1
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if lineno > 50:
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return False
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return False
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def main():
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"""The main subprogram."""
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root_dir = os.path.dirname(os.getcwd())
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os.chdir(root_dir)
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if not (
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os.path.isdir("gdb") and os.path.isfile("gnulib/import/extra/update-copyright")
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):
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print("Error: This script must be called from the gdb directory.")
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sys.exit(1)
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update_list = get_update_list()
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update_files(update_list)
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# Remind the user that some files need to be updated by HAND...
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if MULTIPLE_COPYRIGHT_HEADERS:
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print()
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print(
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"\033[31m"
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"REMINDER: Multiple copyright headers must be updated by hand:"
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"\033[0m"
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)
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for filename in MULTIPLE_COPYRIGHT_HEADERS:
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print(" ", filename)
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if BY_HAND:
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print()
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print(
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"\033[31mREMINDER: The following files must be updated by hand." "\033[0m"
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)
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for filename in BY_HAND:
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print(" ", filename)
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############################################################################
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#
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# Some constants, placed at the end because they take up a lot of room.
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# The actual value of these constants is not significant to the understanding
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# of the script.
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#
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############################################################################
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# Files which should not be modified, either because they are
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# generated, non-FSF, or otherwise special (e.g. license text,
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# or test cases which must be sensitive to line numbering).
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#
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# Filenames are relative to the root directory.
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EXCLUDE_LIST = (
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"gdb/nat/glibc_thread_db.h",
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"gdb/CONTRIBUTE",
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"gnulib/import",
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"gnulib/config.in",
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"gnulib/Makefile.in",
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)
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# Files which should not be modified, either because they are
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# generated, non-FSF, or otherwise special (e.g. license text,
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# or test cases which must be sensitive to line numbering).
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#
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# Matches any file or directory name anywhere. Use with caution.
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# This is mostly for files that can be found in multiple directories.
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# Eg: We want all files named COPYING to be left untouched.
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EXCLUDE_ALL_LIST = (
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"COPYING",
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"COPYING.LIB",
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"CVS",
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"configure",
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"copying.c",
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"fdl.texi",
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"gpl.texi",
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"aclocal.m4",
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)
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# The list of files to update by hand.
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BY_HAND = (
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# Nothing at the moment :-).
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)
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# Files containing multiple copyright headers. This script is only
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# fixing the first one it finds, so we need to finish the update
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# by hand.
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MULTIPLE_COPYRIGHT_HEADERS = (
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"gdb/doc/gdb.texinfo",
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"gdb/doc/refcard.tex",
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"gdb/gdbarch.sh",
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)
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# The list of file which have a copyright, but not head by the FSF.
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# Filenames are relative to the root directory.
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NOT_FSF_LIST = (
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"gdb/exc_request.defs",
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"gdb/gdbtk",
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"gdb/testsuite/gdb.gdbtk/",
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"sim/arm/armemu.h",
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"sim/arm/armos.c",
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"sim/arm/gdbhost.c",
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"sim/arm/dbg_hif.h",
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"sim/arm/dbg_conf.h",
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"sim/arm/communicate.h",
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"sim/arm/armos.h",
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"sim/arm/armcopro.c",
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"sim/arm/armemu.c",
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"sim/arm/kid.c",
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"sim/arm/thumbemu.c",
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"sim/arm/armdefs.h",
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"sim/arm/armopts.h",
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"sim/arm/dbg_cp.h",
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"sim/arm/dbg_rdi.h",
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"sim/arm/parent.c",
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"sim/arm/armsupp.c",
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"sim/arm/armrdi.c",
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"sim/arm/bag.c",
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"sim/arm/armvirt.c",
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"sim/arm/main.c",
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"sim/arm/bag.h",
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"sim/arm/communicate.c",
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"sim/arm/gdbhost.h",
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"sim/arm/armfpe.h",
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"sim/arm/arminit.c",
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"sim/common/cgen-fpu.c",
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"sim/common/cgen-fpu.h",
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"sim/common/cgen-accfp.c",
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"sim/mips/m16run.c",
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"sim/mips/sim-main.c",
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"sim/moxie/moxie-gdb.dts",
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# Not a single file in sim/ppc/ appears to be copyright FSF :-(.
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"sim/ppc/filter.h",
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"sim/ppc/gen-support.h",
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"sim/ppc/ld-insn.h",
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"sim/ppc/hw_sem.c",
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"sim/ppc/hw_disk.c",
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"sim/ppc/idecode_branch.h",
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"sim/ppc/sim-endian.h",
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"sim/ppc/table.c",
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"sim/ppc/hw_core.c",
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"sim/ppc/gen-support.c",
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"sim/ppc/gen-semantics.h",
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"sim/ppc/cpu.h",
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"sim/ppc/sim_callbacks.h",
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"sim/ppc/RUN",
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"sim/ppc/Makefile.in",
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"sim/ppc/emul_chirp.c",
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"sim/ppc/hw_nvram.c",
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"sim/ppc/dc-test.01",
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"sim/ppc/hw_phb.c",
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"sim/ppc/hw_eeprom.c",
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"sim/ppc/bits.h",
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"sim/ppc/hw_vm.c",
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"sim/ppc/cap.h",
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"sim/ppc/os_emul.h",
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"sim/ppc/options.h",
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"sim/ppc/gen-idecode.c",
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"sim/ppc/filter.c",
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"sim/ppc/corefile-n.h",
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"sim/ppc/std-config.h",
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"sim/ppc/ld-decode.h",
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"sim/ppc/filter_filename.h",
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"sim/ppc/hw_shm.c",
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"sim/ppc/pk_disklabel.c",
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"sim/ppc/dc-simple",
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"sim/ppc/misc.h",
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"sim/ppc/device_table.h",
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"sim/ppc/ld-insn.c",
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"sim/ppc/inline.c",
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"sim/ppc/emul_bugapi.h",
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"sim/ppc/hw_cpu.h",
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"sim/ppc/debug.h",
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"sim/ppc/hw_ide.c",
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"sim/ppc/debug.c",
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"sim/ppc/gen-itable.h",
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"sim/ppc/interrupts.c",
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"sim/ppc/hw_glue.c",
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"sim/ppc/emul_unix.c",
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"sim/ppc/sim_calls.c",
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"sim/ppc/dc-complex",
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"sim/ppc/ld-cache.c",
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"sim/ppc/registers.h",
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"sim/ppc/dc-test.02",
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"sim/ppc/options.c",
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"sim/ppc/igen.h",
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"sim/ppc/registers.c",
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"sim/ppc/device.h",
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"sim/ppc/emul_chirp.h",
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"sim/ppc/hw_register.c",
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"sim/ppc/hw_init.c",
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"sim/ppc/sim-endian-n.h",
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"sim/ppc/filter_filename.c",
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"sim/ppc/bits.c",
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"sim/ppc/idecode_fields.h",
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"sim/ppc/hw_memory.c",
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"sim/ppc/misc.c",
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"sim/ppc/double.c",
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"sim/ppc/psim.h",
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"sim/ppc/hw_trace.c",
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"sim/ppc/emul_netbsd.h",
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"sim/ppc/psim.c",
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"sim/ppc/ppc-instructions",
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"sim/ppc/tree.h",
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"sim/ppc/README",
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"sim/ppc/gen-icache.h",
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"sim/ppc/gen-model.h",
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"sim/ppc/ld-cache.h",
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"sim/ppc/mon.c",
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"sim/ppc/corefile.h",
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"sim/ppc/vm.c",
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"sim/ppc/INSTALL",
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"sim/ppc/gen-model.c",
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"sim/ppc/hw_cpu.c",
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"sim/ppc/corefile.c",
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"sim/ppc/hw_opic.c",
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"sim/ppc/gen-icache.c",
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"sim/ppc/events.h",
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"sim/ppc/os_emul.c",
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"sim/ppc/emul_generic.c",
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"sim/ppc/main.c",
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"sim/ppc/hw_com.c",
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"sim/ppc/gen-semantics.c",
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"sim/ppc/emul_bugapi.c",
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"sim/ppc/device.c",
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"sim/ppc/emul_generic.h",
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"sim/ppc/tree.c",
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"sim/ppc/mon.h",
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"sim/ppc/interrupts.h",
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"sim/ppc/cap.c",
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"sim/ppc/cpu.c",
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"sim/ppc/hw_phb.h",
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"sim/ppc/device_table.c",
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"sim/ppc/lf.c",
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"sim/ppc/lf.c",
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"sim/ppc/dc-stupid",
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"sim/ppc/hw_pal.c",
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"sim/ppc/ppc-spr-table",
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"sim/ppc/emul_unix.h",
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"sim/ppc/words.h",
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"sim/ppc/basics.h",
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"sim/ppc/hw_htab.c",
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"sim/ppc/lf.h",
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"sim/ppc/ld-decode.c",
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"sim/ppc/sim-endian.c",
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"sim/ppc/gen-itable.c",
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"sim/ppc/idecode_expression.h",
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"sim/ppc/table.h",
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"sim/ppc/dgen.c",
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"sim/ppc/events.c",
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"sim/ppc/gen-idecode.h",
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"sim/ppc/emul_netbsd.c",
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"sim/ppc/igen.c",
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"sim/ppc/vm_n.h",
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"sim/ppc/vm.h",
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"sim/ppc/hw_iobus.c",
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"sim/ppc/inline.h",
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"sim/testsuite/sim/mips/mips32-dsp2.s",
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)
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if __name__ == "__main__":
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main()
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