/usr/bin/fixcvsdiff is in patchutils 0.3.4-1.
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 | #!/usr/bin/perl -w
#
# Fixes cvs diffs so that the Index: and "---" and "+++" are in sync,
# including diffs containing added or removed files, so that they patch
# correctly with patch(1).
#
# usage: fixcvsdiff [-p] [-b] [files to fix]
#
# -p prints the cvs commands that will be needed when applying
# the patch.
#
# -b keeps a .bak backup file
#
# Based on code by Amir Karger <karger@post.harvard.edu>
#
# Modified by John Levon <moz@compsoc.man.ac.uk> and
# Ville Skyttä <ville.skytta@iki.fi>.
#
# Contributed under the terms of the GNU GPL v2 or later:
# 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.
use Getopt::Std;
our ($opt_b,$opt_p);
$add = 0;
getopts('pb');
if (defined($opt_b)) {
$^I = '.bak';
} else {
$^I = '';
}
while (<>) {
# get the diff fragment filename
if (/^Index: (.*)/) {
$Filename = $1;
}
if (!defined($Filename)) {
print;
next;
}
# tack the filename on the end of lines like this:
# diff [options] -r?.? -r?.?
s/^diff(.*) -r(\S*)$/diff$1 -r$2 $Filename/;
# Allow spaces in file names; the filename ends at the first TAB.
if (/^(---|\+\+\+) ([^\t]+)\t/) {
my ($pre, $currfile) = ($1, $2);
if ($currfile =~ m|^/dev/null|) {
my $action;
if ($pre eq '---') {
$action = 'add';
$add = 1;
} else {
$action = 'remove';
}
if (defined($opt_p)) {
print STDOUT "cvs $action $Filename\n";
}
}
if ($add == 1 && $pre eq '+++' && $currfile =~ m|[^/]*|) {
$add = 0;
}
# Replace all "(---|+++) foo" lines with the correct filename.
if ($currfile ne $Filename) {
# Don't use $pre here, just for safety with '+' ...
s/^(---|\+\+\+) [^\t]+/$1 $Filename/;
}
}
print;
}
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