From 73f1df4e472eb8f7d5a04603460c98fdc9782b44 Mon Sep 17 00:00:00 2001
From: "Bradley M. Kuhn" <bkuhn@ebb.org>
Date: Tue, 23 Aug 2011 10:23:23 -0400
Subject: [PATCH] First draft of line blame counter script.

---
 blame-counter.plx | 95 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 95 insertions(+)
 create mode 100755 blame-counter.plx

diff --git a/blame-counter.plx b/blame-counter.plx
new file mode 100755
index 0000000..2c0f637
--- /dev/null
+++ b/blame-counter.plx
@@ -0,0 +1,95 @@
+#!/usr/bin/perl -w
+# blame-counter.plx                                            -*- Perl -*-
+#
+# Copyright (C) 2011 Bradley M. Kuhn <bkuhn@ebb.org>
+#
+# This software's license gives you freedom; you can copy, convey,
+# propogate, redistribute and/or modify this program under the terms of
+# the GNU  General Public License (GPL) as published by the Free
+# Software Foundation (FSF), either version 3 of the License, or (at your
+# option) any later version of the GPL published by the FSF.
+#
+# 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 in a file in the toplevel directory called
+# "GPLv3".  If not, see <http://www.gnu.org/licenses/>.
+#
+
+use strict;
+use warnings;
+
+######################################################################
+
+
+if (@ARGV != 3) {
+  print "usage: $0 <DATA_FILE> ",
+        "<ALL_COMMITS_IN_PERIOD_OF_INTEREST> <CONFIRMED_COMMITS>\n";
+  exit 1;
+}
+# Note: $DATA_FILE is in the format as output from:
+# for i in `find -type f -print | egrep -v '^./.git'`; do
+#      echo "FILE: $i" >> ../DATA_FILE; git blame  -M -M -M -C -C -C -w -f -n -l $i >> ../DATA_FILE
+#      done
+
+my($DATA_FILE, $COMMITS_IN_RANGE_FILE, $CONFIRMED_COMMITS_FILE) = @ARGV;
+
+
+sub ReadCommitsFile ($) {
+  my($file) = @_;
+
+  open(COMMITS_FILE, "<", $file) or die "unable to pen $file for reading: $!";
+
+  my %commits;
+  while (my $line = <COMMITS_FILE>) {
+    chomp $line;
+    die "strange commit ID, $line, found in $file" unless $line =~ /^[a-f0-9]+$/;
+    $commits{$line} = $file;
+  }
+  close COMMITS_FILE;
+  return \%commits;
+}
+
+my $commitsInRange = ReadCommitsFile($COMMITS_IN_RANGE_FILE);
+
+my $confirmedCommits = ReadCommitsFile($CONFIRMED_COMMITS_FILE);
+
+
+
+open(DATA_FILE, "<", $DATA_FILE) or die "unable to open $DATA_FILE for reading: $!";
+
+my %data;
+my $currentFile;
+
+while (my $dataLine = <DATA_FILE>) {
+  if ($dataLine =~ /^\s*FILE\s*:\s*(.*?)\s*$/) {
+    $currentFile = $1;
+    $data{$currentFile} = { commitsInRange => 0, confirmedCommits => 0 };
+  } else {
+    die "invalid line: $dataLine in blame output" unless ($dataLine =~
+      /^\s*(\S+)\s+\S+\s+\d+\s+\((.+)\s+(\d{4,4}\-\d{2,2}\-\d{2,2}\s+\d{2,2}:\d{2,2}:\d{2,2})\s+([\+\-\d]+)\s+(\d+)\s*\)\s+(.*)$/);
+    my($commitID, $name, $date, $tz, $curLineNumber, $actualCurrentLine) = ($1, $2, $3, $4, $5, $6);
+
+    if (defined $commitsInRange->{$commitID}) {
+      $data{$currentFile}{commitsInRange}++;
+      if (defined $confirmedCommits->{$commitID}) {
+        $data{$currentFile}{confirmedCommits}++;
+    }
+
+    }
+  }
+}
+close DATA_FILE;
+foreach my $file (sort keys %data) {
+  next if $data{$file}{commitsInRange} == 0 or  $data{$file}{confirmedCommits} == 0;
+
+  print sprintf("%s has %d lines from commits in range and %d of those lines are on confirmed list\n",
+    $file, $data{$file}{commitsInRange}, $data{$file}{confirmedCommits});
+}
+#
+# Local variables:
+# compile-command: "perl -c blame-counter.plx"
+# End: