| Current File : //bin/splitdiff |
#!/usr/bin/perl
#
# splitdiff - split up a diff made of incremental patches
# Copyright (C) 2001, 2002, 2003, 2011 Tim Waugh <[email protected]>
# 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.
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
use Getopt::Std;
getopts('p:v-:adE', \%opts);
if ($opts{'-'} && $opts{'-'} eq 'version') {
print "splitdiff - patchutils version 0.3.3\n";
exit 0;
}
if ($opts{'-'} && $opts{'-'} eq 'help') {
print "usage: splitdiff [OPTIONS] FILE\n";
print "OPTIONS are:\n";
print " -a split out every single file-level patch\n";
print " -p N pathname components to ignore\n";
print " -d use output filenames like a_b.c.patch for a/b.c\n";
print " -E don't use .patch filename extension\n";
exit 0;
}
# Read in the input.
open(IN, "<$ARGV[0]") || die "Can't open input file\n";
@input=<IN>;
close(IN);
$part = 1;
my %written = ();
sub process {
print "Lines $_[0] to $_[1]\n" if ($opts{v});
if ($opts{d}) {
$out = $_[2];
$out =~ s,/,_,g;
} else {
$out = sprintf ("%s.part%03d", $ARGV[0], $part);
}
unless ($opts{E}) {
$out = sprintf("%s.patch", $out);
}
if ($written{$_[2]}) { $mode = '>>' } else { $mode = '>' }
$written{$_[2]} = $_[2];
open(OUT, $mode, $out) or die "Can't open output file\n";
for $i ($_[0] .. $_[1]) {
unless (($i == $_[1]) && ($input[$i - 1] =~ /^diff\s+\S+/)) {
print OUT $input[$i - 1];
}
}
close(OUT);
print "Wrote ".$mode.$out."\n";
$part++;
}
if($#ARGV != 0) {
die "usage: splitdiff DIFF\n";
}
$getlist = 'lsdiff -n ';
$getlist .= '--strip='.$opts{p}.' ' if ($opts{p});
$getlist .= $ARGV[0]; # Yuck. How do you do this properly in perl?
open(LIST, '-|', $getlist) or die "Can't run lsdiff";
@list = <LIST>;
close LIST;
my %seen = ();
my @this = ();
my $ready = 0;
my $linenum;
my $file;
for (@list) {
/\s*(\d+)\s*(.*)$/;
($linenum, $file) = ($1, $2);
if ($ready == 1) {
process ($firstline, $linenum - 1, $prevfile);
$ready = 0;
}
$prevfile = $file;
push @this, [ $linenum, $file ];
if ($opts{'a'} || $seen{$file}) {
$firstline = $this[0]->[0];
$ready = 1;
if ($opts{v}) {
for (@this) {
print $_->[0].": ".$_->[1]."\n";
}
print "\n";
}
@this = ();
}
$seen{$file} = $file;
}
if ($ready == 1) {
process ($firstline, $linenum - 1, $file) if $linenum > $firstline;
process ($linenum, $#input + 1, $file);
}
if ($part == 1) {
print "Input contained no duplicate files; nothing to do\n";
}