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#!/usr/bin/perl -w
#
# Script to rediff all patches in the spec
# Usage: perl -w rediffall.pl < kernel-2.4.spec
#
# $workdir is where the new rediff'ed patches are created
# $origdir is where the original patches and tarball are located
#
# Note that both $workdir and $origdir must be absolute path names.
# Suggestion: create a /kernel symbolic link to the top of your CVS tree.
my $workdir = "/dev/shm/redifftree";
my $origdir = "/home/davej/devel";
my $kernver = "linux-2.6.17";
my $datestrip = "s/^\\(\\(+++\\|---\\) [^[:blank:]]\\+\\)[[:blank:]].*/\\1/";
my $patchindex = 0;
my @patchlist;
# phase 1: create a tree
print "Extracting pristine source..\n";
system("mkdir -p $workdir");
system("rm -rf $workdir/*");
chdir("$workdir");
system("tar -jxvf $origdir/$kernver.tar.bz2 > /dev/null");
system("cp -al $kernver linux-$patchindex");
# phase 2: read the spec from stdin and store all patches
print "Reading specfile..\n";
while (<>) {
my $line = $_;
if ($line =~ /^Patch([0-9]+)\: ([a-zA-Z0-9\-\_\.\+]+\.patch)/) {
$patchlist[$1] = $2;
} else {
if ($line =~ /^Patch([0-9]+)\: ([a-zA-Z0-9\-\_\.]+\.bz2)/) {
$patchlist[$1] = $2;
}
}
if ($line =~ /^%patch([0-9]+) -p1/) {
# copy the tree, apply the patch, diff and remove the old tree
my $oldindex = $patchindex;
$patchindex = $1;
print "rediffing patch number $patchindex: $patchlist[$patchindex]\n";
system("cp -al linux-$oldindex linux-$patchindex");
chdir("linux-$patchindex");
if ($patchlist[$patchindex] =~ /bz2/) {
system("bzcat $origdir/$patchlist[$patchindex] | patch -p1 &>/dev/null");
} else {
system("cat $origdir/$patchlist[$patchindex] | patch -p1 &>/dev/null");
}
chdir("$workdir");
system("rm -f `find -name \"*orig\"`");
if ($patchlist[$patchindex] =~ /bz2/) {
} else {
system("diff -urNp --exclude-from=/home/davej/.exclude linux-$oldindex linux-$patchindex | sed '$datestrip' > $patchlist[$patchindex]");
}
system("rm -rf linux-$oldindex");
}
};
1;
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