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maint: automate b4_copyright updates.

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* Makefile.am (update-b4-copyright): New target rule.
* build-aux/local.mk (EXTRA_DIST): Add update-b4-copyright.
* build-aux/update-b4-copyright: New.
* data/yacc.c: Remove stray characters around b4_copyright
invocations.
This commit is contained in:
Joel E. Denny
2009-08-04 18:06:20 -04:00
parent 35905f2b45
commit 269e222e24
5 changed files with 143 additions and 3 deletions
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9
ChangeLog
View File

@@ -1,3 +1,12 @@
2009-08-04 Joel E. Denny <jdenny@clemson.edu>
maint: automate b4_copyright updates.
* Makefile.am (update-b4-copyright): New target rule.
* build-aux/local.mk (EXTRA_DIST): Add update-b4-copyright.
* build-aux/update-b4-copyright: New.
* data/yacc.c: Remove stray characters around b4_copyright
invocations.
2009-08-04 Joel E. Denny <jdenny@clemson.edu>
maint: automate annual package-wide copyright-year update.

7
Makefile.am
View File

@@ -60,3 +60,10 @@ $(top_srcdir)/.version: configure
echo $(VERSION) > $@-t && mv $@-t $@
dist-hook:
echo $(VERSION) > $(distdir)/.tarball-version
.PHONY: update-b4-copyright
update-b4-copyright:
find data -type f \
| grep -v -E '^data/bison.m4$$' \
| xargs $(build_aux)/$@
@echo 'warning: src/parse-gram.[hc] may need to be regenerated.'

1
build-aux/local.mk
View File

@@ -1,3 +1,4 @@
EXTRA_DIST += \
build-aux/update-b4-copyright \
build-aux/prev-version.txt \
build-aux/cross-options.pl

124
build-aux/update-b4-copyright Executable file
View File

@@ -0,0 +1,124 @@
#!/usr/bin/perl -0777 -pi
# Update an b4_copyright invocation to include the current year.
# Copyright (C) 2009 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)
# any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
use strict;
use warnings;
my $this_year = $ENV{UPDATE_COPYRIGHT_YEAR};
if (!$this_year || $this_year !~ m/^\d\d(\d\d)?$/)
{
my ($sec, $min, $hour, $mday, $month, $year) = localtime (time ());
$this_year = $year + 1900;
}
my $margin = 72;
my $old_re = <<'EOF'
(
(?:^|\n)
(?:
b4_copyright\(\[[^]]*]
| m4_(?:push|pop)def\(\[b4_copyright_years]
)
)
(?:
,\s*
(
\[\s* (?:\d{4}(,\s*|-))* (\d{4}) \s*]
)
)?
\)
EOF
;
while (/$old_re/x)
{
my $b4_copyright_line = $1;
my $year_lines = $2;
my $sep = $3 ? $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)
{
$b4_copyright_line .= ',';
if ($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/;
}
else
{
$year_lines =~ s/$final_year/$final_year, $this_year/;
}
}
# Normalize all whitespace.
$year_lines =~ s/\s+/ /g;
# Put spaces after commas.
$year_lines =~ s/, ?/, /g;
# 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 = $year_lines_new;
}
# Replace the old invocation.
s/$old_re/$b4_copyright_line$year_lines/x;
}
if (/\bb4_copyright\(/)
{
print STDERR
"$ARGV: warning: failed to update a b4_copyright invocation\n";
}
if (/\[b4_copyright_years]/)
{
print STDERR
"$ARGV: warning: failed to update a b4_copyright_years use\n";
}
s/b4\*copyright/b4_copyright/g;

5
data/yacc.c
View File

@@ -156,8 +156,7 @@ m4_define([b4_rhs_location],
m4_changecom()
m4_divert_push(0)dnl
@output(b4_parser_file_name@)@
b4_copyright([Implementation for Bison's Yacc-like parsers in C])dnl'
[
b4_copyright([Implementation for Bison's Yacc-like parsers in C])[
/* C LALR(1) parser skeleton written by Richard Stallman, by
simplifying the original so-called "semantic" parser. */
@@ -1599,7 +1598,7 @@ yypushreturn:
]b4_epilogue[]dnl
b4_defines_if(
[@output(b4_spec_defines_file@)@
b4_copyright([Interface for Bison's Yacc-like parsers in C])dnl'
b4_copyright([Interface for Bison's Yacc-like parsers in C])dnl
b4_percent_code_get([[requires]])[]dnl