#!/usr/bin/perl -0777 -pi
-# Update an b4_copyright invocation to include the current year.
-# Copyright (C) 2009 Free Software Foundation, Inc.
-#
+# Update b4_copyright invocations or b4_copyright_years definitions to
+# include the current year.
+
+# Copyright (C) 2009-2012 Free Software Foundation, Inc.
+
# 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, or (at your option)
use strict;
use warnings;
+my $margin = 72;
+
my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
-if (!$this_year || $this_year !~ m/^\d\d(\d\d)?$/)
+if (!$this_year || $this_year !~ m/^\d{4}$/)
{
my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
$this_year = $year + 1900;
}
-my $margin = 72;
my $old_re = <<'EOF'
(
(?:^|\n)
+ #BEFORE
(?:
- b4_copyright\(\[[^]]*]
+ b4_copyright\(\[[^][]*]
| m4_(?:push|pop)def\(\[b4_copyright_years]
)
+ #AFTER
)
(?:
,\s*
(
- \[\s* (?:\d{4}(,\s*|-))* (\d{4}) \s*]
+ \[\s* (?:\d{4}(?:,\s*|-))* (\d{4}) \s*]
)
)?
\)
EOF
;
-while (/$old_re/x)
+while (/($old_re)/gx)
{
- my $b4_copyright_line = $1;
- my $year_lines = $2;
- my $sep = $3 ? $3 : "";
+ my $start = pos() - length ($1);
+ my $b4_copyright_line = $2;
+ my $year_lines = $3;
my $final_year = $4;
$year_lines .= ')';
- # Mark it completed.
- $b4_copyright_line =~ s/b4_/b4*/g;
-
# If there was a second argument, it contains years, so update them.
if ($final_year)
{
if ($final_year != $this_year)
{
# Update the year.
- if ($sep eq '-' && $final_year + 1 == $this_year)
- {
- $year_lines =~ s/$final_year/$this_year/;
- }
- elsif ($sep ne '-' && $final_year + 1 == $this_year)
+ $year_lines =~ s/$final_year/$final_year, $this_year/;
+ }
+
+ # Normalize all whitespace.
+ $year_lines =~ s/\s+/ /g;
+
+ # Put spaces after commas.
+ $year_lines =~ s/, ?/, /g;
+
+ # Compress to intervals.
+ $year_lines =~
+ s/
+ (\d{4})
+ (?:
+ (,\ |-)
+ ((??{
+ if ($2 eq '-') { '\d{4}'; }
+ elsif (!$3) { $1 + 1; }
+ else { $3 + 1; }
+ }))
+ )+
+ /$1-$3/gx;
+
+ # Format within margin.
+ my $year_lines_new;
+ my $indent = index ($b4_copyright_line, '[');
+ --$indent if ($b4_copyright_line =~ m/^\n/);
+ while (length $year_lines)
+ {
+ my $text_margin = $margin - $indent;
+ if (($year_lines =~ s/^(.{1,$text_margin})(?: |$)//)
+ || ($year_lines =~ s/^([\S]+)(?: |$)//))
{
- $year_lines =~ s/$final_year/$final_year-$this_year/;
+ my $line = "\n" . (' 'x$indent) . $1;
+ ++$indent if (!$year_lines_new);
+ $year_lines_new .= $line;
}
else
{
- $year_lines =~ s/$final_year/$final_year, $this_year/;
+ # Should be unreachable, but we don't want an infinite
+ # loop if it can be reached.
+ die;
}
}
- # Normalize all whitespace.
- $year_lines =~ s/\s+/ /g;
-
- # Put spaces after commas.
- $year_lines =~ s/, ?/, /g;
-
- # Format within margin.
- my $year_lines_new;
- my $indent = index ($b4_copyright_line, '[');
- --$indent if ($b4_copyright_line =~ m/^\n/);
- while (length $year_lines)
- {
- my $text_margin = $margin - $indent;
- if (($year_lines =~ s/^(.{1,$text_margin})(?: |$)//)
- || ($year_lines =~ s/^([\S]+)(?: |$)//))
- {
- my $line = "\n" . (' 'x$indent) . $1;
- ++$indent if (!$year_lines_new);
- $year_lines_new .= $line;
- }
- else
- {
- # Should be unreachable, but we don't want an infinite
- # loop if it can be reached.
- die;
- }
- }
- $year_lines = $year_lines_new;
- }
+ # Replace the old invocation. Should never die.
+ die if (!s/$old_re\G/$b4_copyright_line$year_lines_new/x);
- # Replace the old invocation.
- s/$old_re/$b4_copyright_line$year_lines/x;
+ # Prepare for the next search.
+ pos () = $start + length ("$b4_copyright_line$year_lines_new");
+ }
}
-if (/\bb4_copyright\(/)
+while (/(\bb4_copyright\()/g)
{
- print STDERR
- "$ARGV: warning: failed to update a b4_copyright invocation\n";
+ my $start = pos () - length ($1);
+ my $end = pos ();
+ my $re = $old_re;
+ pos () = $start;
+ $re =~ s/\#BEFORE/\\G/;
+ if (!/$re/x)
+ {
+ my $line = (substr ($_, 0, $start) =~ s/\n/\n/g) + 1;
+ print STDERR
+ "$ARGV:$line: warning: failed to update a b4_copyright\n";
+ }
+ pos () = $end;
}
-if (/\[b4_copyright_years]/)
+
+while (/(\[b4_copyright_years])/g)
{
- print STDERR
- "$ARGV: warning: failed to update a b4_copyright_years use\n";
+ my $start = pos () - length ($1);
+ my $end = pos ();
+ my $re = $old_re;
+ $re =~ s/\#AFTER/\\G/;
+ if (!/$re/x)
+ {
+ # The substr operation blows away pos (), so restoring pos ()
+ # at the end is necessary.
+ my $line = (substr ($_, 0, $start) =~ s/\n/\n/g) + 1;
+ print STDERR
+ "$ARGV:$line: warning: failed to update a"
+ . " b4_copyright_years\n";
+ }
+ pos () = $end;
}
-
-s/b4\*copyright/b4_copyright/g;
projects / bison.git / blobdiff