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commit f330e171434dd0f6bec8144363ee03d1e92c158d
Author: Osamu Aoki <[email protected]>
Date:   Fri Oct 2 15:40:09 2015 +0000

    uscan: record md5sum into uscan.log
    
    This is not exactly addressing #727096 but helps to some extent to
    record what was the upstream tarball before the repack etc.
---
 scripts/uscan.pl | 30 +++++++++++++++++++++++++++---
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/scripts/uscan.pl b/scripts/uscan.pl
index b768863..cebbff7 100755
--- a/scripts/uscan.pl
+++ b/scripts/uscan.pl
@@ -1462,6 +1462,8 @@ use filetest 'access';
 use Getopt::Long qw(:config gnu_getopt);
 use Devscripts::Versort;
 use Text::ParseWords;
+use Digest::MD5;
+
 BEGIN {
     eval { require LWP::UserAgent; };
     if ($@) {
@@ -2421,6 +2423,7 @@ sub process_watchline ($$$$$$)
                $common_mangled_newversion = undef;
                $previous_newversion = undef;
                $previousfile_base = undef;
+               $uscanlog = undef;
            }
        }
 
@@ -3271,14 +3274,35 @@ EOF
        $common_mangled_newversion = $1 if $target =~ 
m/[^_]+_(.+)\.orig\.tar\.(?:gz|bz2|lzma|xz)$/;
        print STDERR "$progname debug: orig.tar.* tarball version (after 
mk-origtargz): $common_mangled_newversion\n" if $debug;
     }
+
+    # Check pkg-ver.tar.gz and pkg_ver.orig.tar.gz
     if (! defined $uscanlog) {
        $uscanlog = "../${pkg}_${common_mangled_newversion}.uscan.log";
-       open(USCANLOG, "> $uscanlog") or uscan_die "$progname: could not open 
$uscanlog for write: $!\n";
-       print USCANLOG "# package downloaded by uscan\n";
+       if (-e $uscanlog) {
+           uscan_warn "$progname: ??? STRANGE ??? uscan log file already 
exists: $uscanlog (appending)\n";
+       }
+       open(USCANLOG, ">> $uscanlog") or uscan_die "$progname: could not open 
$uscanlog for append: $!\n";
+       print USCANLOG "# uscan log\n";
     } else {
        open(USCANLOG, ">> $uscanlog") or uscan_die "$progname: could not open 
$uscanlog for append: $!\n";
     }
-    print USCANLOG "${newfile_base}\t${target}\n";
+    my $umd5sum = Digest::MD5->new;
+    my $omd5sum = Digest::MD5->new;
+    open (my $ufh, '<', "../${newfile_base}") or die "Can't open 
'${newfile_base}': $!";
+    open (my $ofh, '<', "../${target}") or die "Can't open '${target}': $!";
+    $umd5sum->addfile($ufh);
+    $omd5sum->addfile($ofh);
+    close($ufh);
+    close($ofh);
+    my $umd5hex = $umd5sum->hexdigest;
+    my $omd5hex = $omd5sum->hexdigest;
+    if ($umd5hex eq $omd5hex) {
+       print USCANLOG "# == ${newfile_base}\t-->\t${target}\t(same)\n";
+    } else {
+       print USCANLOG "# !! ${newfile_base}\t-->\t${target}\t(changed)\n";
+    }
+    print USCANLOG "$umd5hex  ${newfile_base}\n";
+    print USCANLOG "$omd5hex  ${target}\n";
     close USCANLOG or uscan_die "$progname: could not close $uscanlog: $!\n";
 
     if ($dehs) {

-- 
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