| #! /usr/bin/env python3 |
| |
| # Copyright (C) 2011-2020 Free Software Foundation, Inc. |
| # |
| # This file is part of GDB. |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 3 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| |
| """copyright.py |
| |
| This script updates the list of years in the copyright notices in |
| most files maintained by the GDB project. |
| |
| Usage: cd src/gdb && python copyright.py |
| |
| Always review the output of this script before committing it! |
| A useful command to review the output is: |
| % filterdiff -x \*.c -x \*.cc -x \*.h -x \*.exp updates.diff |
| This removes the bulk of the changes which are most likely to be correct. |
| """ |
| |
| import datetime |
| import locale |
| import os |
| import os.path |
| import subprocess |
| import sys |
| |
| |
| def get_update_list(): |
| """Return the list of files to update. |
| |
| Assumes that the current working directory when called is the root |
| of the GDB source tree (NOT the gdb/ subdirectory!). The names of |
| the files are relative to that root directory. |
| """ |
| result = [] |
| for gdb_dir in ('gdb', 'gnulib', 'sim', 'include/gdb'): |
| for root, dirs, files in os.walk(gdb_dir, topdown=True): |
| for dirname in dirs: |
| reldirname = "%s/%s" % (root, dirname) |
| if (dirname in EXCLUDE_ALL_LIST |
| or reldirname in EXCLUDE_LIST |
| or reldirname in NOT_FSF_LIST |
| or reldirname in BY_HAND): |
| # Prune this directory from our search list. |
| dirs.remove(dirname) |
| for filename in files: |
| relpath = "%s/%s" % (root, filename) |
| if (filename in EXCLUDE_ALL_LIST |
| or relpath in EXCLUDE_LIST |
| or relpath in NOT_FSF_LIST |
| or relpath in BY_HAND): |
| # Ignore this file. |
| pass |
| else: |
| result.append(relpath) |
| return result |
| |
| |
| def update_files(update_list): |
| """Update the copyright header of the files in the given list. |
| |
| We use gnulib's update-copyright script for that. |
| """ |
| # We want to use year intervals in the copyright notices, and |
| # all years should be collapsed to one single year interval, |
| # even if there are "holes" in the list of years found in the |
| # original copyright notice (OK'ed by the FSF, case [gnu.org #719834]). |
| os.environ['UPDATE_COPYRIGHT_USE_INTERVALS'] = '2' |
| |
| # Perform the update, and save the output in a string. |
| update_cmd = ['bash', 'gnulib/import/extra/update-copyright'] |
| update_cmd += update_list |
| |
| p = subprocess.Popen(update_cmd, stdout=subprocess.PIPE, |
| stderr=subprocess.STDOUT, |
| encoding=locale.getpreferredencoding()) |
| update_out = p.communicate()[0] |
| |
| # Process the output. Typically, a lot of files do not have |
| # a copyright notice :-(. The update-copyright script prints |
| # a well defined warning when it did not find the copyright notice. |
| # For each of those, do a sanity check and see if they may in fact |
| # have one. For the files that are found not to have one, we filter |
| # the line out from the output, since there is nothing more to do, |
| # short of looking at each file and seeing which notice is appropriate. |
| # Too much work! (~4,000 files listed as of 2012-01-03). |
| update_out = update_out.splitlines(keepends=False) |
| warning_string = ': warning: copyright statement not found' |
| warning_len = len(warning_string) |
| |
| for line in update_out: |
| if line.endswith(warning_string): |
| filename = line[:-warning_len] |
| if may_have_copyright_notice(filename): |
| print(line) |
| else: |
| # Unrecognized file format. !?! |
| print("*** " + line) |
| |
| |
| def may_have_copyright_notice(filename): |
| """Check that the given file does not seem to have a copyright notice. |
| |
| The filename is relative to the root directory. |
| This function assumes that the current working directory is that root |
| directory. |
| |
| The algorigthm is fairly crude, meaning that it might return |
| some false positives. I do not think it will return any false |
| negatives... We might improve this function to handle more |
| complex cases later... |
| """ |
| # For now, it may have a copyright notice if we find the word |
| # "Copyright" at the (reasonable) start of the given file, say |
| # 50 lines... |
| MAX_LINES = 50 |
| |
| # We don't really know what encoding each file might be following, |
| # so just open the file as a byte stream. We only need to search |
| # for a pattern that should be the same regardless of encoding, |
| # so that should be good enough. |
| fd = open(filename, 'rb') |
| |
| lineno = 1 |
| for line in fd: |
| if b'Copyright' in line: |
| return True |
| lineno += 1 |
| if lineno > 50: |
| return False |
| return False |
| |
| |
| def main (): |
| """The main subprogram.""" |
| root_dir = os.path.dirname(os.getcwd()) |
| os.chdir(root_dir) |
| |
| if not (os.path.isdir('gdb') and |
| os.path.isfile("gnulib/import/extra/update-copyright")): |
| print("Error: This script must be called from the gdb directory.") |
| sys.exit(1) |
| |
| update_list = get_update_list() |
| update_files (update_list) |
| |
| # Remind the user that some files need to be updated by HAND... |
| |
| if MULTIPLE_COPYRIGHT_HEADERS: |
| print() |
| print("\033[31m" |
| "REMINDER: Multiple copyright headers must be updated by hand:" |
| "\033[0m") |
| for filename in MULTIPLE_COPYRIGHT_HEADERS: |
| print(" ", filename) |
| |
| if BY_HAND: |
| print() |
| print("\033[31mREMINDER: The following files must be updated by hand." \ |
| "\033[0m") |
| for filename in BY_HAND: |
| print(" ", filename) |
| |
| ############################################################################ |
| # |
| # Some constants, placed at the end because they take up a lot of room. |
| # The actual value of these constants is not significant to the understanding |
| # of the script. |
| # |
| ############################################################################ |
| |
| # Files which should not be modified, either because they are |
| # generated, non-FSF, or otherwise special (e.g. license text, |
| # or test cases which must be sensitive to line numbering). |
| # |
| # Filenames are relative to the root directory. |
| EXCLUDE_LIST = ( |
| 'gdb/nat/glibc_thread_db.h', |
| 'gdb/CONTRIBUTE', |
| 'gnulib/import' |
| ) |
| |
| # Files which should not be modified, either because they are |
| # generated, non-FSF, or otherwise special (e.g. license text, |
| # or test cases which must be sensitive to line numbering). |
| # |
| # Matches any file or directory name anywhere. Use with caution. |
| # This is mostly for files that can be found in multiple directories. |
| # Eg: We want all files named COPYING to be left untouched. |
| |
| EXCLUDE_ALL_LIST = ( |
| "COPYING", "COPYING.LIB", "CVS", "configure", "copying.c", |
| "fdl.texi", "gpl.texi", "aclocal.m4", |
| ) |
| |
| # The list of files to update by hand. |
| BY_HAND = ( |
| # Nothing at the moment :-). |
| ) |
| |
| # Files containing multiple copyright headers. This script is only |
| # fixing the first one it finds, so we need to finish the update |
| # by hand. |
| MULTIPLE_COPYRIGHT_HEADERS = ( |
| "gdb/doc/gdb.texinfo", |
| "gdb/doc/refcard.tex", |
| "gdb/gdbarch.sh", |
| ) |
| |
| # The list of file which have a copyright, but not head by the FSF. |
| # Filenames are relative to the root directory. |
| NOT_FSF_LIST = ( |
| "gdb/exc_request.defs", |
| "gdb/gdbtk", |
| "gdb/testsuite/gdb.gdbtk/", |
| "sim/arm/armemu.h", "sim/arm/armos.c", "sim/arm/gdbhost.c", |
| "sim/arm/dbg_hif.h", "sim/arm/dbg_conf.h", "sim/arm/communicate.h", |
| "sim/arm/armos.h", "sim/arm/armcopro.c", "sim/arm/armemu.c", |
| "sim/arm/kid.c", "sim/arm/thumbemu.c", "sim/arm/armdefs.h", |
| "sim/arm/armopts.h", "sim/arm/dbg_cp.h", "sim/arm/dbg_rdi.h", |
| "sim/arm/parent.c", "sim/arm/armsupp.c", "sim/arm/armrdi.c", |
| "sim/arm/bag.c", "sim/arm/armvirt.c", "sim/arm/main.c", "sim/arm/bag.h", |
| "sim/arm/communicate.c", "sim/arm/gdbhost.h", "sim/arm/armfpe.h", |
| "sim/arm/arminit.c", |
| "sim/common/cgen-fpu.c", "sim/common/cgen-fpu.h", |
| "sim/common/cgen-accfp.c", |
| "sim/mips/m16run.c", "sim/mips/sim-main.c", |
| "sim/moxie/moxie-gdb.dts", |
| # Not a single file in sim/ppc/ appears to be copyright FSF :-(. |
| "sim/ppc/filter.h", "sim/ppc/gen-support.h", "sim/ppc/ld-insn.h", |
| "sim/ppc/hw_sem.c", "sim/ppc/hw_disk.c", "sim/ppc/idecode_branch.h", |
| "sim/ppc/sim-endian.h", "sim/ppc/table.c", "sim/ppc/hw_core.c", |
| "sim/ppc/gen-support.c", "sim/ppc/gen-semantics.h", "sim/ppc/cpu.h", |
| "sim/ppc/sim_callbacks.h", "sim/ppc/RUN", "sim/ppc/Makefile.in", |
| "sim/ppc/emul_chirp.c", "sim/ppc/hw_nvram.c", "sim/ppc/dc-test.01", |
| "sim/ppc/hw_phb.c", "sim/ppc/hw_eeprom.c", "sim/ppc/bits.h", |
| "sim/ppc/hw_vm.c", "sim/ppc/cap.h", "sim/ppc/os_emul.h", |
| "sim/ppc/options.h", "sim/ppc/gen-idecode.c", "sim/ppc/filter.c", |
| "sim/ppc/corefile-n.h", "sim/ppc/std-config.h", "sim/ppc/ld-decode.h", |
| "sim/ppc/filter_filename.h", "sim/ppc/hw_shm.c", |
| "sim/ppc/pk_disklabel.c", "sim/ppc/dc-simple", "sim/ppc/misc.h", |
| "sim/ppc/device_table.h", "sim/ppc/ld-insn.c", "sim/ppc/inline.c", |
| "sim/ppc/emul_bugapi.h", "sim/ppc/hw_cpu.h", "sim/ppc/debug.h", |
| "sim/ppc/hw_ide.c", "sim/ppc/debug.c", "sim/ppc/gen-itable.h", |
| "sim/ppc/interrupts.c", "sim/ppc/hw_glue.c", "sim/ppc/emul_unix.c", |
| "sim/ppc/sim_calls.c", "sim/ppc/dc-complex", "sim/ppc/ld-cache.c", |
| "sim/ppc/registers.h", "sim/ppc/dc-test.02", "sim/ppc/options.c", |
| "sim/ppc/igen.h", "sim/ppc/registers.c", "sim/ppc/device.h", |
| "sim/ppc/emul_chirp.h", "sim/ppc/hw_register.c", "sim/ppc/hw_init.c", |
| "sim/ppc/sim-endian-n.h", "sim/ppc/filter_filename.c", |
| "sim/ppc/bits.c", "sim/ppc/idecode_fields.h", "sim/ppc/hw_memory.c", |
| "sim/ppc/misc.c", "sim/ppc/double.c", "sim/ppc/psim.h", |
| "sim/ppc/hw_trace.c", "sim/ppc/emul_netbsd.h", "sim/ppc/psim.c", |
| "sim/ppc/ppc-instructions", "sim/ppc/tree.h", "sim/ppc/README", |
| "sim/ppc/gen-icache.h", "sim/ppc/gen-model.h", "sim/ppc/ld-cache.h", |
| "sim/ppc/mon.c", "sim/ppc/corefile.h", "sim/ppc/vm.c", |
| "sim/ppc/INSTALL", "sim/ppc/gen-model.c", "sim/ppc/hw_cpu.c", |
| "sim/ppc/corefile.c", "sim/ppc/hw_opic.c", "sim/ppc/gen-icache.c", |
| "sim/ppc/events.h", "sim/ppc/os_emul.c", "sim/ppc/emul_generic.c", |
| "sim/ppc/main.c", "sim/ppc/hw_com.c", "sim/ppc/gen-semantics.c", |
| "sim/ppc/emul_bugapi.c", "sim/ppc/device.c", "sim/ppc/emul_generic.h", |
| "sim/ppc/tree.c", "sim/ppc/mon.h", "sim/ppc/interrupts.h", |
| "sim/ppc/cap.c", "sim/ppc/cpu.c", "sim/ppc/hw_phb.h", |
| "sim/ppc/device_table.c", "sim/ppc/lf.c", "sim/ppc/lf.c", |
| "sim/ppc/dc-stupid", "sim/ppc/hw_pal.c", "sim/ppc/ppc-spr-table", |
| "sim/ppc/emul_unix.h", "sim/ppc/words.h", "sim/ppc/basics.h", |
| "sim/ppc/hw_htab.c", "sim/ppc/lf.h", "sim/ppc/ld-decode.c", |
| "sim/ppc/sim-endian.c", "sim/ppc/gen-itable.c", |
| "sim/ppc/idecode_expression.h", "sim/ppc/table.h", "sim/ppc/dgen.c", |
| "sim/ppc/events.c", "sim/ppc/gen-idecode.h", "sim/ppc/emul_netbsd.c", |
| "sim/ppc/igen.c", "sim/ppc/vm_n.h", "sim/ppc/vm.h", |
| "sim/ppc/hw_iobus.c", "sim/ppc/inline.h", |
| "sim/testsuite/sim/bfin/s21.s", "sim/testsuite/sim/mips/mips32-dsp2.s", |
| ) |
| |
| if __name__ == "__main__": |
| main() |
| |
