Set Copyright years and make them easier to update

I replaced git-set-file-times with an improved version that I wrote
recently (in python3). A new script uses it to figure out the
last-modified year for each *.[ch] file and updates its copyright.
It also puts the latest year into the latest-year.h file for the
output of --version.

Makefile.in

@@ -95,6 +95,7 @@ rsync$(EXEEXT): $(OBJS)
 
 $(OBJS): $(HEADERS)
 $(CHECK_OBJS): $(HEADERS)
+options.o: latest-year.h
 
 flist.o: rounding.h
 

authenticate.c

@@ -2,7 +2,7 @@
  * Support rsync daemon authentication.
  *
  * Copyright (C) 1998-2000 Andrew Tridgell
- * Copyright (C) 2002-2019 Wayne Davison
+ * Copyright (C) 2002-2020 Wayne Davison
  *
  * 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

checksum.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1996 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
- * Copyright (C) 2004-2019 Wayne Davison
+ * Copyright (C) 2004-2020 Wayne Davison
  *
  * 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

cleanup.c

@@ -4,7 +4,7 @@
  * Copyright (C) 1996-2000 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2002 Martin Pool
- * Copyright (C) 2003-2019 Wayne Davison
+ * Copyright (C) 2003-2020 Wayne Davison
  *
  * 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

clientserver.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1998-2001 Andrew Tridgell <[email protected]>
  * Copyright (C) 2001-2002 Martin Pool <[email protected]>
- * Copyright (C) 2002-2019 Wayne Davison
+ * Copyright (C) 2002-2020 Wayne Davison
  *
  * 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

connection.c

@@ -2,6 +2,7 @@
  * Support the max connections option.
  *
  * Copyright (C) 1998 Andrew Tridgell
+ * Copyright (C) 2006-2020 Wayne Davison
  *
  * 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

flist.c

@@ -4,7 +4,7 @@
  * Copyright (C) 1996 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2001, 2002 Martin Pool <[email protected]>
- * Copyright (C) 2002-2019 Wayne Davison
+ * Copyright (C) 2002-2020 Wayne Davison
  *
  * 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

generator.c

@@ -4,7 +4,7 @@
  * Copyright (C) 1996-2000 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2002 Martin Pool <[email protected]>
- * Copyright (C) 2003-2019 Wayne Davison
+ * Copyright (C) 2003-2020 Wayne Davison
  *
  * 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

latest-year.h

@@ -0,0 +1 @@
+#define LATEST_YEAR "2020"

lib/md5.c

@@ -2,6 +2,7 @@
  * RFC 1321 compliant MD5 implementation
  *
  * Copyright (C) 2001-2003 Christophe Devine
+ * Copyright (C) 2007-2020 Wayne Davison
  *
  * 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

loadparm.c

@@ -11,13 +11,12 @@
  *
  * You should have received a copy of the GNU General Public License along
  * with this program; if not, visit the http://fsf.org website.
- */
-
-/* This is based on loadparm.c from Samba, written by Andrew Tridgell
+ *
+ * This is based on loadparm.c from Samba, written by Andrew Tridgell
  * and Karl Auer.  Some of the changes are:
  *
  * Copyright (C) 2001, 2002 Martin Pool <[email protected]>
- * Copyright (C) 2003-2019 Wayne Davison <[email protected]>
+ * Copyright (C) 2003-2020 Wayne Davison
  */
 
 /* Load parameters.

log.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1998-2001 Andrew Tridgell <[email protected]>
  * Copyright (C) 2000-2001 Martin Pool <[email protected]>
- * Copyright (C) 2003-2019 Wayne Davison
+ * Copyright (C) 2003-2020 Wayne Davison
  *
  * 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

main.c

@@ -4,7 +4,7 @@
  * Copyright (C) 1996-2001 Andrew Tridgell <[email protected]>
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2001, 2002 Martin Pool <[email protected]>
- * Copyright (C) 2003-2019 Wayne Davison
+ * Copyright (C) 2003-2020 Wayne Davison
  *
  * 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

options.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1998-2001 Andrew Tridgell <[email protected]>
  * Copyright (C) 2000, 2001, 2002 Martin Pool <[email protected]>
- * Copyright (C) 2002-2019 Wayne Davison
+ * Copyright (C) 2002-2020 Wayne Davison
  *
  * 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
@@ -21,6 +21,7 @@
 
 #include "rsync.h"
 #include "itypes.h"
+#include "latest-year.h"
 #include <popt.h>
 #include <zlib.h>
 
@@ -614,7 +615,7 @@ static void print_rsync_version(enum logcode f)
 
 	rprintf(f, "%s  version %s  protocol version %d%s\n",
 		RSYNC_NAME, RSYNC_VERSION, PROTOCOL_VERSION, subprotocol);
-	rprintf(f, "Copyright (C) 1996-2019 by Andrew Tridgell, Wayne Davison, and others.\n");
+	rprintf(f, "Copyright (C) 1996-" LATEST_YEAR " by Andrew Tridgell, Wayne Davison, and others.\n");
 	rprintf(f, "Web site: http://rsync.samba.org/\n");
 	rprintf(f, "Capabilities:\n");
 	rprintf(f, "    %d-bit files, %d-bit inums, %d-bit timestamps, %d-bit long ints,\n",

progress.c

@@ -4,7 +4,7 @@
  * Copyright (C) 1996-2000 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2001, 2002 Martin Pool <[email protected]>
- * Copyright (C) 2003-2019 Wayne Davison
+ * Copyright (C) 2003-2020 Wayne Davison
  *
  * 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

receiver.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1996-2000 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
- * Copyright (C) 2003-2019 Wayne Davison
+ * Copyright (C) 2003-2020 Wayne Davison
  *
  * 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

rounding.c

@@ -1,7 +1,7 @@
 /*
  * A pre-compilation helper program to aid in the creation of rounding.h.
  *
- * Copyright (C) 2007-2019 Wayne Davison
+ * Copyright (C) 2007-2020 Wayne Davison
  *
  * 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

rsync.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1996 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
- * Copyright (C) 2003-2019 Wayne Davison
+ * Copyright (C) 2003-2020 Wayne Davison
  *
  * 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

rsync.h

@@ -2,7 +2,7 @@
  * Copyright (C) 1996, 2000 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
  * Copyright (C) 2001, 2002 Martin Pool <[email protected]>
- * Copyright (C) 2003-2019 Wayne Davison
+ * Copyright (C) 2003-2020 Wayne Davison
  *
  * 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

sender.c

@@ -3,7 +3,7 @@
  *
  * Copyright (C) 1996 Andrew Tridgell
  * Copyright (C) 1996 Paul Mackerras
- * Copyright (C) 2003-2019 Wayne Davison
+ * Copyright (C) 2003-2020 Wayne Davison
  *
  * 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

support/git-set-file-times

@@ -1,43 +1,76 @@
-#!/usr/bin/perl
-use strict;
-use warnings;
-
-# Sets mtime and atime of files to the latest commit time in git.
-#
-# This is useful after the first clone of the rsync repository BEFORE you
-# do any building.  It is also safe if you have done a "make distclean".
-
-my %ls;
-my $commit_time;
-my $prefix = @ARGV && $ARGV[0] =~ s/^--prefix=// ? shift : '';
-
-my $top_dir = `git rev-parse --show-toplevel`;
-exit 1 unless $top_dir;
-chomp($top_dir);
-
-chdir $top_dir or die "Failed to chdir to $top_dir\: $!\n";
-
-$/ = "\0";
-open FH, '-|', qw( git ls-files -z ) or die "Failed to fork: $!";
-while (<FH>) {
-    chomp;
-    $ls{$_} = $_;
-}
-close FH;
-
-$/ = "\n";
-open FH, '-|', qw( git log -r --name-only --no-color --pretty=raw -z ), @ARGV or die "Failed to fork: $!";
-while (<FH>) {
-    chomp;
-    if (/^committer .*? (\d+) (?:[\-\+]\d+)$/) {
-	$commit_time = $1;
-    } elsif (s/\0\0commit [a-f0-9]{40}$// || s/\0$//) {
-	my @files = delete @ls{split(/\0/, $_)};
-	@files = grep { defined $_ } @files;
-	next unless @files;
-	map { s/^/$prefix/ } @files;
-	utime $commit_time, $commit_time, @files;
-    }
-    last unless %ls;
-}
-close FH;
+#!/usr/bin/python3
+
+import os, re, argparse, subprocess
+from datetime import datetime
+
+NULL_COMMIT_RE = re.compile(r'\0\0commit [a-f0-9]{40}$|\0$')
+
+def main():
+    if not args.git_dir:
+        cmd = 'git rev-parse --show-toplevel 2>/dev/null || echo .'
+        top_dir = subprocess.check_output(cmd, shell=True).decode('utf-8').strip()
+        args.git_dir = os.path.join(top_dir, '.git')
+        if not args.prefix:
+            os.chdir(top_dir)
+
+    git = [ 'git', '--git-dir=' + args.git_dir ]
+
+    if args.tree:
+        cmd = git + 'ls-tree -z -r --name-only'.split() + [ args.tree ]
+    else:
+        cmd = git + 'ls-files -z'.split()
+
+    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE)
+    out = proc.communicate()[0].decode('utf-8')
+    ls = set(out.split('\0'))
+    ls.discard('')
+
+    cmd = git + 'log -r --name-only --no-color --pretty=raw --no-renames -z'.split()
+    if args.tree:
+        cmd.append(args.tree)
+    cmd += ['--'] + args.files
+
+    proc = subprocess.Popen(cmd, stdout=subprocess.PIPE)
+    for line in proc.stdout:
+        line = line.decode('utf-8').strip()
+        m = re.match(r'^committer .*? (\d+) [-+]\d+$', line)
+        if m:
+            commit_time = int(m[1])
+        elif NULL_COMMIT_RE.search(line):
+            line = NULL_COMMIT_RE.sub('', line)
+            files = set(fn for fn in line.split('\0') if fn in ls)
+            if not files:
+                continue
+            for fn in files:
+                if args.prefix:
+                    fn = args.prefix + fn
+                mtime = os.lstat(fn).st_mtime
+                if args.list:
+                    if args.list > 1:
+                        ts = str(commit_time).rjust(10)
+                    else:
+                        ts = datetime.utcfromtimestamp(commit_time).strftime("%Y-%m-%d %H:%M:%S")
+                    chg = '.' if mtime == commit_time else '*'
+                    print(chg, ts, fn)
+                elif mtime != commit_time:
+                    if not args.quiet:
+                        print(f"Setting {fn}")
+                    os.utime(fn, (commit_time, commit_time), follow_symlinks = False)
+            ls -= files
+            if not ls:
+                break
+    proc.communicate()
+
+
+if __name__ == '__main__':
+    parser = argparse.ArgumentParser(description="Set the times of the current git checkout to their last-changed time.")
+    parser.add_argument('--git-dir', metavar='GIT_DIR', help="The git dir to query (defaults to affecting the current git checkout).")
+    parser.add_argument('--tree', metavar='TREE-ISH', help="The tree-ish to query (defaults to the current branch).")
+    parser.add_argument('--prefix', metavar='PREFIX_STR', help="Prepend the PREFIX_STR to each filename we tweak.")
+    parser.add_argument('--quiet', '-q', action='store_true', help="Don't output the changed-file information.")
+    parser.add_argument('--list', '-l', action='count', help="List the files and their dates instead of changing them. Repeat for Unix Time instead of human reable.")
+    parser.add_argument('files', metavar='FILE', nargs='*', help="Specify a subset of checked-out files to tweak.")
+    args = parser.parse_args()
+    main()
+
+# vim: sw=4 et