/usr/bin/recountdiff is in patchutils 0.3.2-3.
This file is owned by root:root, with mode 0o755.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 | #!/usr/bin/perl
# -*- perl -*-
#
# recountdiff - recompute patch counts and offsets
# Copyright (C) 2002 Tim Waugh <twaugh@redhat.com>
# 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('-:', \%opts);
if ($opts{'-'} && $opts{'-'} eq 'version') {
print "recountdiff - patchutils version 0.3.2\n";
exit 0;
}
if ($opts{'-'} && $opts{'-'} eq 'help') {
print "usage: recountdiff [FILE...]\n";
exit 0;
}
@line=<>;
# First pass: fix up the counts.
$i=-1;
$state=0;
$chunk_start = 0;
$orig=0;
$new=0;
$orig_offset=0;
$new_offset=0;
$misc="";
@off_lines = ();
while ($i < $#line) {
$i++;
$_=$line[$i];
if ($state == 0) {
# Looking for the start of a file change.
unless(/^--- /) {
next;
}
$state++;
} elsif ($state == 1) {
# Should be '+++ ...'.
unless (/^\+\+\+ /) {
if (/^--- /) { $state = 1; }
else { $state = 0; }
next;
}
$state++;
} elsif ($state == 2) {
# Start of chunk. Should be '@@ ...'
unless (/^@@ -(\d+),?(\d+)? \+(\d+),?(\d+)? @@(.*)$/) {
if (/^--- /) { $state = 1; }
else { $state = 0; }
next;
}
($orig_offset,$new_offset,$misc) = ($1,$3,$5);
$orig_offset++ if defined($2) and $2 == 0;
$new_offset++ if defined($4) and $4 == 0;
$state++;
$orig=0;
$new=0;
$chunk_start = $i + 1;
} elsif ($state == 3) {
# Counting lines.
my $spit = 0;
if (/^ /) { $orig++; $new++; }
elsif (/^\+/) { $new++; }
elsif (/^-/) {
# Look out for new file changes.
if (/^--- /) {
if ($i+2 <= $#line) {
if ($line[$i+2] =~ /^@/) {
$spit = 1;
}
}
} else {
$orig++;
}
} elsif (/^\\/) { }
else {
$spit = 1;
}
$spit = 1 if ($i == $#line);
if ($spit) {
# Spit them out.
$chunk_start--;
$orig_offset-- if ($orig == 0);
$new_offset-- if ($new == 0);
$line[$chunk_start] = "@@ -$orig_offset";
$line[$chunk_start] .= ",$orig" if ($orig != 1);
$line[$chunk_start] .= " +$new_offset";
$line[$chunk_start] .= ",$new" if ($new != 1);
$line[$chunk_start] .= " @@" . "$misc\n";
push (@off_lines, $chunk_start);
if (/^@/) { $state = 2; $i--; }
else {
$state = 0;
$i--;
push (@off_lines, -1)
}
}
}
}
# Second pass: fix up the offsets.
$offset = 0;
foreach (@off_lines) {
if ($_ == -1) {
$offset = 0;
next;
}
$line[$_] =~ /^@@ -(\d+),?(\d+)? \+(\d+),?(\d+)? @@(.*)$/;
($ooff,$oc,$nc,$misc) = ($1,$2,$4,$5);
$oc = 1 unless defined($oc);
$nc = 1 unless defined($nc);
$noff = $ooff + $offset;
$noff++ if ($oc == 0);
$noff-- if ($nc == 0);
$line[$_] = "@@ -$ooff";
$line[$_] .= ",$oc" if ($oc != 1);
$line[$_] .= " +$noff";
$line[$_] .= ",$nc" if ($nc != 1);
$line[$_] .= " @@" . "$misc\n";
$offset += $nc - $oc;
}
print @line;
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