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https://github.com/brain-hackers/u-boot-brain
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![Tom Rini](/assets/img/avatar_default.png)
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
158 lines
4.7 KiB
Plaintext
Executable File
158 lines
4.7 KiB
Plaintext
Executable File
# SPDX-License-Identifier: GPL-2.0+
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#!/usr/bin/env python2
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#
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# Copyright (C) 2014, Masahiro Yamada <yamada.m@jp.panasonic.com>
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'''
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A tool to create/update the mailmap file
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The command 'git shortlog' summarizes git log output in a format suitable
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for inclusion in release announcements. Each commit will be grouped by
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author and title.
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One problem is that the authors' name and/or email address is sometimes
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spelled differently. The .mailmap feature can be used to coalesce together
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commits by the same persion.
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(See 'man git-shortlog' for furthur information of this feature.)
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This tool helps to create/update the mailmap file.
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It runs 'git shortlog' internally and searches differently spelled author
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names which share the same email address. The author name with the most
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commits is asuumed to be a canonical real name. If the number of commits
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from the cananonical name is equal to or greater than 'MIN_COMMITS',
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the entry for the cananical name will be output. ('MIN_COMMITS' is used
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here because we do not want to create a fat mailmap by adding every author
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with only a few commits.)
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If there exists a mailmap file specified by the mailmap.file configuration
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options or '.mailmap' at the toplevel of the repository, it is used as
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a base file. (The mailmap.file configuration takes precedence over the
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'.mailmap' file if both exist.)
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The base file and the newly added entries are merged together and sorted
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alphabetically (but the comment block is kept untouched), and then printed
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to standard output.
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Usage
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-----
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scripts/mailmapper
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prints the mailmapping to standard output.
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scripts/mailmapper > tmp; mv tmp .mailmap
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will be useful for updating '.mailmap' file.
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'''
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import sys
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import os
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import subprocess
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# The entries only for the canonical names with MIN_COMMITS or more commits.
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# This limitation is used so as not to create a too big mailmap file.
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MIN_COMMITS = 50
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try:
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toplevel = subprocess.check_output(['git', 'rev-parse', '--show-toplevel'])
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except subprocess.CalledProcessError:
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sys.exit('Please run in a git repository.')
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# strip '\n'
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toplevel = toplevel.rstrip()
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# Change the current working directory to the toplevel of the respository
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# for our easier life.
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os.chdir(toplevel)
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# First, create 'auther name' vs 'number of commits' database.
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# We assume the name with the most commits as the canonical real name.
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shortlog = subprocess.check_output(['git', 'shortlog', '-s', '-n'])
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commits_per_name = {}
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for line in shortlog.splitlines():
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try:
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commits, name = line.split(None, 1)
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except ValueError:
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# ignore lines with an empty author name
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pass
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commits_per_name[name] = int(commits)
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# Next, coalesce the auther names with the same email address
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shortlog = subprocess.check_output(['git', 'shortlog', '-s', '-n', '-e'])
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mail_vs_name = {}
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output = {}
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for line in shortlog.splitlines():
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# tmp, mail = line.rsplit(None, 1) is not safe
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# because weird email addresses might include whitespaces
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tmp, mail = line.split('<')
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mail = '<' + mail.rstrip()
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try:
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_, name = tmp.rstrip().split(None, 1)
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except ValueError:
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# author name is empty
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name = ''
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if mail in mail_vs_name:
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# another name for the same email address
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prev_name = mail_vs_name[mail]
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# Take the name with more commits
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major_name = sorted([prev_name, name],
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key=lambda x: commits_per_name[x] if x else 0)[1]
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mail_vs_name[mail] = major_name
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if commits_per_name[major_name] > MIN_COMMITS:
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output[mail] = major_name
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else:
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mail_vs_name[mail] = name
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# [1] If there exists a mailmap file at the location pointed to
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# by the mailmap.file configuration option, update it.
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# [2] If the file .mailmap exists at the toplevel of the repository, update it.
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# [3] Otherwise, create a new mailmap file.
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mailmap_files = []
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try:
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config_mailmap = subprocess.check_output(['git', 'config', 'mailmap.file'])
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except subprocess.CalledProcessError:
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config_mailmap = ''
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config_mailmap = config_mailmap.rstrip()
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if config_mailmap:
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mailmap_files.append(config_mailmap)
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mailmap_files.append('.mailmap')
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infile = None
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for map_file in mailmap_files:
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try:
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infile = open(map_file)
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except:
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# Failed to open. Try next.
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continue
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break
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comment_block = []
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output_lines = []
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if infile:
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for line in infile:
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if line[0] == '#' or line[0] == '\n':
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comment_block.append(line)
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else:
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output_lines.append(line)
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break
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for line in infile:
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output_lines.append(line)
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infile.close()
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for mail, name in output.items():
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output_lines.append(name + ' ' + mail + '\n')
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output_lines.sort()
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sys.stdout.write(''.join(comment_block + output_lines))
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