89 lines
2.9 KiB
Python
89 lines
2.9 KiB
Python
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#!/usr/bin/env python
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#
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# Copyright (c) 2011 Free Software Foundation, Inc.
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# Written by Brett Smith <brett@fsf.org>
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# This program recursively greps the current directory for things that
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# look like license statements, and then prints out a report about
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# which files have which statements. This is useful for picking
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# through a project that has standard license boilerplate on most
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# files, but a few exceptions; it's easy to pick out the oddballs with
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# the report.
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# Ideas for improvement:
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# * Better output formatting. Sort by frequency.
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# * Modify the grep options with command line arguments.
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# * Smarter logic about what makes a license statement. Something to make
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# this less sensitive to line wrapping issues and things like that.
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import subprocess
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class LicenseFilenameMismatch(Exception):
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pass
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class LicenseData(object):
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def add_line(self, line):
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current_filename = getattr(self, 'filename', None)
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filename, text = line.split('\0')
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if current_filename is None:
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self.filename = filename
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self.text = [text]
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elif current_filename == filename:
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self.text.append(text)
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else:
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raise LicenseFilenameMismatch
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class LicenseFiler(object):
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def __init__(self):
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self.licenses = {}
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self.process = subprocess.Popen(['grep', '-Zir', 'license', '.'],
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stdout=subprocess.PIPE)
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self.parse_grep()
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def save_license(self, license):
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if not getattr(license, 'text', None):
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return
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filenames = self.licenses.setdefault(tuple(license.text), set())
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filenames.add(license.filename)
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def parse_grep(self):
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current_license = LicenseData()
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for line in self.process.stdout:
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try:
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current_license.add_line(line)
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except LicenseFilenameMismatch:
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self.save_license(current_license)
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current_license = LicenseData()
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current_license.add_line(line)
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self.save_license(current_license)
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self.process.stdout.close()
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self.process.wait()
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def report(self):
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for text, filenames in self.licenses.items():
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print "".join(text)
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print "\n".join(("\t" + fn for fn in filenames))
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print
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def main(args):
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filer = LicenseFiler()
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filer.report()
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if __name__ == '__main__':
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main([])
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