scripts: add update-copyrights.py

This script will automate how the current attribution and copyright listings
are generated, thus also enabling it to be maintained from repository history
in the future.

This doesn't change anything about who has or hasn't contributed or deserves
credit, it just does a best effort attempt at maintaining existing attribution
we inherited and automating it going forward. The automation might expose
existing problems - they should be fixed by adding or removing exceptions in
the script.

scripts/update-copyrights.py

@@ -0,0 +1,253 b''
+#!/usr/bin/env python2
+# -*- coding: utf-8 -*-
+
+"""
+Kallithea script for maintaining contributor lists from version control
+history.
+
+This script and the data in it is a best effort attempt at reverse engineering
+previous attributions and correlate that with version control history while
+preserving all existing copyright statements and attribution. This script is
+processing and summarizing information found elsewhere - it is not by itself
+making any claims. Comments in the script are an attempt at reverse engineering
+possible explanations - they are not showing any intent or confirming it is
+correct.
+
+Three files are generated / modified by this script:
+
+kallithea/templates/about.html claims to show copyright holders, and the GPL
+license requires such existing "legal notices" to be preserved. We also try to
+keep it updated with copyright holders, but do not claim it is a correct list.
+
+CONTRIBUTORS has the purpose of giving credit where credit is due and list all
+the contributor names in the source.
+
+kallithea/templates/base/base.html contains the copyright years in the page
+footer.
+
+Both make a best effort of listing all copyright holders, but revision control
+history might be a better and more definitive source.
+
+Contributors are sorted "fairly" by copyright year and amount of
+contribution.
+
+New contributors are listed, without considering if the contribution contains
+copyrightable work.
+
+When the copyright might belong to a different legal entity than the
+contributor, the legal entity is given credit too.
+"""
+
+
+# Some committers are so wrong that it doesn't point at any contributor:
+total_ignore = set()
+total_ignore.add('*** failed to import extension hggit: No module named hggit')
+total_ignore.add('<>')
+
+# Normalize some committer names where people have contributed under different
+# names or email addresses:
+name_fixes = {}
+name_fixes['Andrew Shadura'] = "Andrew Shadura <[e-mail]>"
+name_fixes['aparkar'] = "Aparkar <[e-mail]>"
+name_fixes['Aras Pranckevicius'] = "Aras Pranckevičius <[e-mail]>"
+name_fixes['Augosto Hermann'] = "Augusto Herrmann <[e-mail]>"
+name_fixes['"Bradley M. Kuhn" <[e-mail]>'] = "Bradley M. Kuhn <[e-mail]>"
+name_fixes['dmitri.kuznetsov'] = "Dmitri Kuznetsov"
+name_fixes['Dmitri Kuznetsov'] = "Dmitri Kuznetsov"
+name_fixes['domruf'] = "Dominik Ruf <[e-mail]>"
+name_fixes['Ingo von borstel'] = "Ingo von Borstel <[e-mail]>"
+name_fixes['Jan Heylen'] = "Jan Heylen <[e-mail]>"
+name_fixes['Jason F. Harris'] = "Jason Harris <[e-mail]>"
+name_fixes['Jelmer Vernooij'] = "Jelmer Vernooij <[e-mail]>"
+name_fixes['jfh <[e-mail]>'] = "Jason Harris <[e-mail]>"
+name_fixes['Leonardo Carneiro<[e-mail]>'] = "Leonardo Carneiro <[e-mail]>"
+name_fixes['leonardo'] = "Leonardo Carneiro <[e-mail]>"
+name_fixes['Leonardo <[e-mail]>'] = "Leonardo Carneiro <[e-mail]>"
+name_fixes['Les Peabody'] = "Les Peabody <[e-mail]>"
+name_fixes['"Lorenzo M. Catucci" <[e-mail]>'] = "Lorenzo M. Catucci <[e-mail]>"
+name_fixes['Lukasz Balcerzak'] = "Łukasz Balcerzak <[e-mail]>"
+name_fixes['mao <[e-mail]>'] = "Ching-Chen Mao <[e-mail]>"
+name_fixes['marcink'] = "Marcin Kuźmiński <[e-mail]>"
+name_fixes['Marcin Kuzminski'] = "Marcin Kuźmiński <[e-mail]>"
+name_fixes['[e-mail]'] = "nansenat16 <[e-mail]>"
+name_fixes['Peter Vitt'] = "Peter Vitt <[e-mail]>"
+name_fixes['[e-mail]'] = "Philip Jameson <[e-mail]>"
+name_fixes['Søren Løvborg'] = "Søren Løvborg <[e-mail]>"
+name_fixes['Thomas De Schampheleire'] = "Thomas De Schampheleire <[e-mail]>"
+name_fixes['Weblate'] = "<>"
+name_fixes['xpol'] = "xpol <[e-mail]>"
+
+
+# Some committer email address domains that indicate that another entity might
+# hold some copyright too:
+domain_extra = {}
+domain_extra['unity3d.com'] = "Unity Technologies"
+domain_extra['rhodecode.com'] = "RhodeCode GmbH"
+
+# Repository history show some old contributions that traditionally hasn't been
+# listed in about.html - preserve that:
+no_about = set(total_ignore)
+# The following contributors were traditionally not listed in about.html and it
+# seems unclear if the copyright is personal or belongs to a company.
+no_about.add(('Thayne Harbaugh <[e-mail]>', '2011'))
+no_about.add(('Dies Koper <[e-mail]>', '2012'))
+no_about.add(('Erwin Kroon <[e-mail]>', '2012'))
+no_about.add(('Vincent Caron <[e-mail]>', '2012'))
+# These contributors' contributions might be too small to be copyrightable:
+no_about.add(('[e-mail]', '2012'))
+no_about.add(('Stefan Engel <[e-mail]>', '2012'))
+no_about.add(('Ton Plomp <[e-mail]>', '2013'))
+# Was reworked and contributed later and shadowed by other contributions:
+no_about.add(('Sean Farley <[e-mail]>', '2013'))
+
+# Preserve contributors listed in about.html but not appearing in repository
+# history:
+other_about = [
+    ("2011", "Aparkar <[e-mail]>"),
+    ("2010", "RhodeCode GmbH"),
+    ("2011", "RhodeCode GmbH"),
+    ("2012", "RhodeCode GmbH"),
+    ("2013", "RhodeCode GmbH"),
+]
+
+# Preserve contributors listed in CONTRIBUTORS but not appearing in repository
+# history:
+other_contributors = [
+    ("", "Andrew Kesterson <[e-mail]>"),
+    ("", "cejones"),
+    ("", "David A. Sjøen <[e-mail]>"),
+    ("", "James Rhodes <[e-mail]>"),
+    ("", "Jonas Oberschweiber <[e-mail]>"),
+    ("", "larikale"),
+    ("", "RhodeCode GmbH"),
+    ("", "Sebastian Kreutzberger <[e-mail]>"),
+    ("", "Steve Romanow <[e-mail]>"),
+    ("", "SteveCohen"),
+    ("", "Thomas <[e-mail]>"),
+    ("", "Thomas Waldmann <[e-mail]>"),
+]
+
+
+import os
+import re
+from collections import defaultdict
+
+
+def sortkey(x):
+    """Return key for sorting contributors "fairly":
+    * latest contribution
+    * first contribution
+    * number of contribution years
+    * name (with some unicode normalization)
+    The entries must be 2-tuples of a list of string years and the unicode name"""
+    return (x[0] and -int(x[0][-1]),
+            x[0] and int(x[0][0]),
+            -len(x[0]),
+            x[1].decode('utf8').lower().replace(u'\xe9', u'e').replace(u'\u0142', u'l')
+        )
+
+
+def nice_years(l, dash='-', join=' '):
+    """Convert a list of years into brief range like '1900-1901, 1921'."""
+    if not l:
+        return ''
+    start = end = int(l[0])
+    ranges = []
+    for year in l[1:] + [0]:
+        year = int(year)
+        if year == end + 1:
+            end = year
+            continue
+        if start == end:
+            ranges.append('%s' % start)
+        else:
+            ranges.append('%s%s%s' % (start, dash, end))
+        start = end = year
+    assert start == 0 and end == 0, (start, end)
+    return join.join(ranges)
+
+
+def insert_entries(
+        filename,
+        all_entries,
+        no_entries,
+        domain_extra,
+        split_re,
+        normalize_name,
+        format_f):
+    """Update file with contributor information.
+    all_entries: list of tuples with year and name
+    no_entries: set of names or name and year tuples to ignore
+    domain_extra: map domain name to extra credit name
+    split_re: regexp matching the part of file to rewrite
+    normalize_name: function to normalize names for grouping and display
+    format_f: function formatting year list and name to a string
+    """
+    name_years = defaultdict(set)
+
+    for year, name in all_entries:
+        if name in no_entries or (name, year) in no_entries:
+            continue
+        domain = name.split('@', 1)[-1].rstrip('>')
+        if domain in domain_extra:
+            name_years[domain_extra[domain]].add(year)
+        name_years[normalize_name(name)].add(year)
+
+    l = [(list(sorted(year for year in years if year)), name)
+         for name, years in name_years.items()]
+    l.sort(key=sortkey)
+
+    with file(filename) as f:
+        pre, post = re.split(split_re, f.read())
+
+    with file(filename, 'w') as f:
+        f.write(pre +
+                ''.join(format_f(years, name) for years, name in l) +
+                post)
+
+
+def main():
+    repo_entries = [
+        (year, name_fixes.get(name) or name_fixes.get(name.rsplit('<', 1)[0].strip()) or name)
+        for year, name in
+        (line.strip().split(' ', 1)
+         for line in os.popen("""hg log -r '::.' -T '{date(date,"%Y")} {author}\n'""").readlines())
+        ]
+
+    insert_entries(
+        filename='kallithea/templates/about.html',
+        all_entries=repo_entries + other_about,
+        no_entries=no_about,
+        domain_extra=domain_extra,
+        split_re=r'(?:  <li>Copyright &copy; [^\n]*</li>\n)*',
+        normalize_name=lambda name: name.split('<', 1)[0].strip(),
+        format_f=lambda years, name: '  <li>Copyright &copy; %s, %s</li>\n' % (nice_years(years, '&ndash;', ', '), name),
+        )
+
+    insert_entries(
+        filename='CONTRIBUTORS',
+        all_entries=repo_entries + other_contributors,
+        no_entries=total_ignore,
+        domain_extra=domain_extra,
+        split_re=r'(?:    [^\n]*\n)*',
+        normalize_name=lambda name: name,
+        format_f=lambda years, name: ('    %s%s%s\n' % (name, ' ' if years else '', nice_years(years))),
+        )
+
+    insert_entries(
+        filename='kallithea/templates/base/base.html',
+        all_entries=repo_entries,
+        no_entries=total_ignore,
+        domain_extra={},
+        split_re=r'(?<=&copy;) .* (?=by various authors)',
+        normalize_name=lambda name: '',
+        format_f=lambda years, name: ' ' + nice_years(years, '&ndash;', ', ') + ' ',
+        )
+
+
+if __name__ == '__main__':
+    main()
+
+
+# To list new contributors since last tagging:
+# { hg log -r '::tagged()' -T '    {author}\n    {author}\n'; hg log -r '::.' -T '    {author}\n' | sort | uniq; } | sort | uniq -u

CONTRIBUTORS

@@ -1,11 +1,19 b''
 List of contributors to Kallithea project:
 
-    Mads Kiilerich <[e-mail]> 2012-2016
+    Mads Kiilerich <[e-mail]> 2012-2017
+    Unity Technologies 2012-2017
+    Andrew Shadura <[e-mail]> 2012 2014-2017
+    Dominik Ruf <[e-mail]> 2012 2014 2016-2017
+    Sam Jaques <[e-mail]> 2015 2017
+    Mads Kiilerich <[e-mail]> 2016-2017
+    Ching-Chen Mao <[e-mail]> 2017
+    FUJIWARA Katsunori <[e-mail]> 2017
+    Viktar Vauchkevich <[e-mail]> 2017
     Takumi IINO <[e-mail]> 2012-2016
-    Unity Technologies 2012-2016
-    Andrew Shadura <[e-mail]> 2012 2014-2016
-    Dominik Ruf <[e-mail]> 2012 2014 2016
+    Thomas De Schampheleire <[e-mail]> 2014-2016
     Søren Løvborg <[e-mail]> 2015-2016
+    Anton Shestakov <[e-mail]> 2016
+    Brandon Jones <[e-mail]> 2016
     Konstantin Veretennicov <[e-mail]> 2016
     Robert James Dennington <[e-mail]> 2016
     Aras Pranckevičius <[e-mail]> 2012-2013 2015
@@ -13,7 +21,6 b' List of contributors to Kallithea projec'
     Christian Oyarzun <[e-mail]> 2014-2015
     Joseph Rivera <[e-mail]> 2014-2015
     Michal Čihař <[e-mail]> 2014-2015
-    Thomas De Schampheleire <[e-mail]> 2014-2015
     Anatoly Bubenkov <[e-mail]> 2015
     Andrew Bartlett <[e-mail]> 2015
     Balázs Úr <[e-mail]> 2015
@@ -42,7 +49,6 b' List of contributors to Kallithea projec'
     Robert Martinez <[e-mail]> 2015
     Robert Rauch <[e-mail]> 2015
     Ronny Pfannschmidt <[e-mail]> 2015
-    Sam Jaques <[e-mail]> 2015
     Tuux <[e-mail]> 2015
     Viktar Palstsiuk <[e-mail]> 2015
     Bradley M. Kuhn <[e-mail]> 2014

kallithea/templates/about.html

@@ -27,12 +27,19 b''
   necessarily limited to the following:
   <ul style="margin: 0 0 0 50px;">
 
-  <li>Copyright &copy; 2012&ndash;2016, Mads Kiilerich</li>
+  <li>Copyright &copy; 2012&ndash;2017, Mads Kiilerich</li>
+  <li>Copyright &copy; 2012&ndash;2017, Unity Technologies</li>
+  <li>Copyright &copy; 2012, 2014&ndash;2017, Andrew Shadura</li>
+  <li>Copyright &copy; 2012, 2014, 2016&ndash;2017, Dominik Ruf</li>
+  <li>Copyright &copy; 2015, 2017, Sam Jaques</li>
+  <li>Copyright &copy; 2017, Ching-Chen Mao</li>
+  <li>Copyright &copy; 2017, FUJIWARA Katsunori</li>
+  <li>Copyright &copy; 2017, Viktar Vauchkevich</li>
   <li>Copyright &copy; 2012&ndash;2016, Takumi IINO</li>
-  <li>Copyright &copy; 2012&ndash;2016, Unity Technologies</li>
-  <li>Copyright &copy; 2012, 2014&ndash;2016, Andrew Shadura</li>
-  <li>Copyright &copy; 2012, 2014, 2016, Dominik Ruf</li>
+  <li>Copyright &copy; 2014&ndash;2016, Thomas De Schampheleire</li>
   <li>Copyright &copy; 2015&ndash;2016, Søren Løvborg</li>
+  <li>Copyright &copy; 2016, Anton Shestakov</li>
+  <li>Copyright &copy; 2016, Brandon Jones</li>
   <li>Copyright &copy; 2016, Konstantin Veretennicov</li>
   <li>Copyright &copy; 2016, Robert James Dennington</li>
   <li>Copyright &copy; 2012&ndash;2013, 2015, Aras Pranckevičius</li>
@@ -40,7 +47,6 b''
   <li>Copyright &copy; 2014&ndash;2015, Joseph Rivera</li>
   <li>Copyright &copy; 2014&ndash;2015, Michal Čihař</li>
   <li>Copyright &copy; 2014&ndash;2015, Sean Farley</li>
-  <li>Copyright &copy; 2014&ndash;2015, Thomas De Schampheleire</li>
   <li>Copyright &copy; 2015, Anatoly Bubenkov</li>
   <li>Copyright &copy; 2015, Andrew Bartlett</li>
   <li>Copyright &copy; 2015, Balázs Úr</li>
@@ -69,7 +75,6 b''
   <li>Copyright &copy; 2015, Robert Martinez</li>
   <li>Copyright &copy; 2015, Robert Rauch</li>
   <li>Copyright &copy; 2015, Ronny Pfannschmidt</li>
-  <li>Copyright &copy; 2015, Sam Jaques</li>
   <li>Copyright &copy; 2015, Tuux</li>
   <li>Copyright &copy; 2015, Viktar Palstsiuk</li>
   <li>Copyright &copy; 2014, Bradley M. Kuhn</li>