wine/tools/genpatch
Francois Gouget c4c271f1e4 The generated patch was missing a line of the diff.
genpatch was also depending on the new files being listed first by
'cvs diff' (which is the case but I'm not sure there is any hard
guarantee).
Use 'perl -w' for more checking, fix the resulting 'undefined value'
warnings. In many cases we don't just want $options{xxx} to exist, we
want it to be defined.
Restrict the scope of variables and remove unneeded variables.
2004-10-07 17:33:29 +00:00

141 lines
4.3 KiB
Perl
Executable file

#!/usr/bin/perl -w
#
# genpatch - A utility that generates patches for submission to
# wine-patches@winehq.org
#
# Copyright Steven Elliott <elliotsl@mindspring.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
=head1 NAME
genpatch - A utility that generates patches for submission to
wine-patches@winehq.org
=head1 SYNOPSIS
genpatch [B<-v>] [B<-n> patch_name] [B<-f> patch_file]
[B<-c> change_log] [B<-m> modified_files]
[B<-a> added_files]
=head1 DESCRIPTION
The genpatch utility generated patches for submission to
wine-patches@winehq by acting as a wrapper to "cvs diff". The "B<-v>"
switch specifies that verbose output should be generated. The "B<-n>"
switch overrides the patch name ("Name" field) which defaults to a
numeric UTC date. The "B<-f>" switch overrides the filename of the patch
which defaults to "patches/<patch_name>.diff". The "B<-c>" switch
specifies the CVS change log entry ("ChangeLog" field) which can be
seen when "cvs log" is invoked. The "B<-m>" ("ModifiedFiles" field) and
"B<-a>" ("AddedFiles" field) switches override the set of files that
would normally be included by the "cvs diff". Normally "cvs diff"
includes all files modified relative to the deltas indicated by the
"CVS/Entries" file and ignores all newly added files. The "B<-m>" switch
specifies a whitespace separated list of files that were modified.
The "B<-a>" switch specifies a whitespace separated list of files that
were added.
=head1 EXAMPLE
genpatch B<-n> NLSFix B<-c> "various fixes for NLS support" \
B<-m> ole/ole2nls.c B<-a> ole/ole3nls.c
The above generates a patch named "NLSFix" in "patches/NLSFix.diff"
that includes a modification to "ole/ole2nls.c" and a newly added
"ole/ole3nls.c".
=cut
use strict;
use Getopt::Std;
use File::Basename;
use POSIX qw(strftime);
# Command line options
my %options;
# Default the patch name to the UTC time. Use a more descriptive date for the
# patch generation date.
$options{n} = strftime "%Y%m%d%H%M", gmtime;
my $gen_date = strftime "%Y/%m/%d %H:%M:%S UTC", gmtime;
unless(getopts("vn:f:c:m:a:p:", \%options))
{
print STDERR "Usage: $0 [-v] [-n patch_name] [-f patch_file] " .
"[-c change_log] [-m modified_files] [-a added_files] [-p path_to_patches]\n";
exit 1;
}
$options{p} = "patches" if (!defined $options{p});
$options{f} = "$options{p}/$options{n}.diff" if (!defined $options{f});
$options{p} = dirname $options{f};
$options{a} = "" if (!defined $options{a});
my @added_files = split ' ', $options{a};
$options{m} = "" if (!defined $options{m});
$options{c} = "" if (!defined $options{c});
$options{c} =~ s/\\n/\n\t/g;
if (!-d $options{p})
{
mkdir $options{p}, (0777 & ~umask)
or die "Unable to mkdir $options{p}: $!";
}
elsif (-e $options{f})
{
print STDERR "$options{f} already exists. Aborting.\n";
exit 1;
}
my $mod_files_str = $options{m} ? $options{m} : "<see cvs diff>";
print "Generating $options{f}.\n" if($options{v});
open OPT_F, ">$options{f}" or die "Unable to open $options{f} for write: $!";
print OPT_F <<EOF;
Name: $options{n}
ChangeLog: $options{c}
GenDate: $gen_date
ModifiedFiles: $mod_files_str
AddedFiles: $options{a}
EOF
print "Invoking cvs diff.\n" if($options{v});
open CVS_IN, "cvs diff -u $options{m} |"
or die "Unable to invoke cvs: $!";
while (my $cvs_line = <CVS_IN>)
{
if ($cvs_line !~ /^\? (.*)/)
{
print OPT_F $cvs_line;
}
elsif (!$options{a})
{
push @added_files, chomp $1;
}
}
close CVS_IN;
foreach my $added_file (@added_files)
{
print "Adding $added_file as a new file.\n" if($options{v});
open DIFF_IN, "diff -u /dev/null $added_file|"
or die "Unable to invoke diff: $!";
print OPT_F <DIFF_IN>;
close DIFF_IN;
}
close OPT_F;