freeswitch/support-d/utils/hashfinder
2015-10-02 12:50:49 -05:00

151 lines
3.4 KiB
Perl
Executable File

#!/usr/bin/perl
# Copyright (c) 2007-2014, Anthony Minessale II
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
#
# Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# Neither the name of the original author; nor the names of any contributors
# may be used to endorse or promote products derived from this software
# without specific prior written permission.
#
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
# OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
# EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
# PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
# PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Contributors:
#
# hashfinder - Find origin of a particular line of code
#
my $file = shift;
my $regex = shift;
my $alt_file = shift;
my $delim = " ";
$file and $regex or die "missing params. Syntax: <file> <regex>";
sub doit($$) {
my $rev = shift;
my $pattern = shift;
my $loops = shift || 0;
my $linematch = 0;
if ($pattern =~ /^\~(.*)/) {
$pattern = $1;
} else {
$pattern = quotemeta $pattern;
}
if ($pattern =~ /^(\d+)$/) {
$linematch = 1;
}
retry:
open GIT, "git blame -n $file $rev 2>&1|";
my $mc = 0;
my @matches = ();
while (<GIT>) {
my $matched = 0;
if (/fatal:/) {
if ($alt_file) {
$file = $alt_file;
$alt_file = undef;
goto retry;
}
}
if ($linematch) {
$matched = (/^\S+\s+$pattern\s+/);
} else {
$matched = (/$pattern/);
}
if ($matched) {
s/[\r\n]//g;
push @matches, $_;
$mc++;
}
}
close(GIT);
if ($mc > 5) {
print $delim x $loops;
print "$mc matches; Maybe more specific?\n";
foreach (@matches) {
print "$_\n";
}
return;
}
my $x = 0;
foreach (@matches) {
my ($hash, $lno, $author, $line);
my $done = 0;
if (/\//) {
($hash, $lno, $author, $line) = /(\S+)\s+\S+\s+(\S+)\s+(\([^\)]+\))\s*(.*)/;
$done = 1;
} else {
die $_;
($hash, $lno, $author, $line) = /(\S+)\s+(\S+)\s+(\([^\)]+\))\s*(.*)/;
}
if ($hash) {
$line =~ s/^\s+//g;
print "\n";
print $delim x $loops;
my $msg = `git log -1 --pretty=format:%B $hash`;
print "[$hash] [$lno] [$author] [$line]\n";
print $delim x $loops;
print ":: $msg\n";
doit("$hash" . "^", $line, $loops+1);
print "\n";
}
last if $done;
}
}
doit(undef, $regex);
# For Emacs:
# Local Variables:
# mode:perl
# indent-tabs-mode:t
# tab-width:4
# c-basic-offset:4
# End:
# For VIM:
# vim:set softtabstop=4 shiftwidth=4 tabstop=4 noet: