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#!/usr/bin/perl -w
#
# Regina - A Normal Surface Theory Calculator
# Source Stub Year Update Utility
#
# Copyright (c) 1999-2016, Ben Burton
# For further details contact Ben Burton (bab@debian.org).
#
# Usage: updateyear <old_year> <new_year> [ <text-file> ... ]
#
# Replaces the old year with the new year in the copyright header at
# the beginning of each given file. You will be asked to approve or
# reject each change.
#
# 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 2 of the
# License, or (at your option) any later version.
#
# As an exception, when this program is distributed through (i) the
# App Store by Apple Inc.; (ii) the Mac App Store by Apple Inc.; or
# (iii) Google Play by Google Inc., then that store may impose any
# digital rights management, device limits and/or redistribution
# restrictions that are required by its terms of service.
#
# 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, write to the Free
# Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston,
# MA 02110-1301, USA.
#
use strict;
# --- Command-line sanity check. ---
my $nArgs = @ARGV;
if ($nArgs < 3) {
print STDERR "Usage: updateyear <old_year> <new_year> [ <text-file> ... ]\n";
exit(1);
}
my $oldYear;
my $newYear;
my @argFiles;
($oldYear, $newYear, @argFiles) = @ARGV;
# --- Run through each file to process. ---
foreach my $file (@argFiles) {
# Read the file contents.
if (! open(DATA, $file)) {
print STDERR "ERROR: Could not open $file for reading.\n";
next;
}
my @lines = <DATA>;
close(DATA);
# Hunt for a sentry.
my @newLines = ();
my $edit;
my $changed = 0;
foreach my $line (@lines) {
$edit = undef;
if ($line =~ /Copyright \(c\) $oldYear,/) {
$edit = $line;
$edit =~ s/(Copyright \(c\) )$oldYear,/$1$newYear,/g;
} elsif ($line =~ /Copyright \(c\) \d+-$oldYear,/) {
$edit = $line;
$edit =~ s/(Copyright \(c\) \d+-)$oldYear,/$1$newYear,/g;
}
if (not defined $edit) {
push(@newLines, $line);
next;
}
print "CHANGE:\n-$line+$edit";
print "Accept? [Y/n] ";
my $response = <STDIN>;
$response =~ s/\s//g;
$response =~ tr/A-Z/a-z/;
$response eq '' and $response = 'y';
while (not ($response eq 'y' or $response eq 'n')) {
print "Accept? [Y/n] ";
$response = <STDIN>;
$response =~ s/\s//g;
$response =~ tr/A-Z/a-z/;
$response eq '' and $response = 'y';
}
if ($response eq 'y') {
push(@newLines, $edit);
$changed = 1;
} else {
push(@newLines, $line);
}
}
if ($changed) {
if (! open(DATA, '>'.$file)) {
print STDERR "ERROR: Could not open $file for writing.\n";
next;
}
print DATA $_ foreach (@newLines);
close(DATA);
print "REPLACED: $file.\n\n";
} else {
# print "Unchanged: $file.\n";
}
}
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