tools/tools/commitsdb/make_commit_db

   1 #!/usr/bin/perl -w
   2
   3 # $FreeBSD: src/tools/tools/commitsdb/make_commit_db,v 1.2 2002/10/17 16:29:26 joe Exp $
   4 # $DragonFly: src/tools/tools/commitsdb/make_commit_db,v 1.5 2006/07/12 21:40:49 swildner Exp $
   5
   6 # This script walks the tree from the current directory
   7 # and spits out a database generated by md5'ing the cvs log
   8 # messages of each revision of every file in the tree.
   9
  10 use strict;
  11 use Digest::MD5 qw(md5_hex);
  12
  13 my $dbname = "commitsdb";
  14 open DB, "> $dbname" or die "$!\n";
  15
  16 # Extract all the logs for the current directory.
  17 my @dirs = ".";
  18 while (@dirs) {
  19         my $dir = shift @dirs;
  20         my %logs;
  21
  22         opendir DIR, $dir or die $!;
  23         foreach my $f (grep { /[^\.]/ } readdir DIR) {
  24                 my $filename = "$dir/$f";
  25                 if (-f $filename) {
  26                         my %loghash = parse_log_message($filename);
  27                         next unless %loghash;
  28
  29                         $logs{$filename} = {%loghash};
  30                 } elsif (-d $filename) {
  31                         next if $filename =~ /\/CVS$/;
  32                         push @dirs, $filename;
  33                 }
  34         }
  35         close DIR;
  36
  37         # Produce a database of the commits
  38         foreach my $f (keys %logs) {
  39                 my $file = $logs{$f};
  40                 foreach my $rev (keys %$file) {
  41                         my $hash = $$file{$rev};
  42
  43                         print DB "$f $rev $hash\n";
  44                 }
  45         }
  46
  47         print "\r" . " " x 30 . "\r$dir";
  48 }
  49 print "\n";
  50
  51 close DB;
  52
  53
  54
  55 ##################################################
  56 # Run a cvs log on a file and return a parse entry.
  57 ##################################################
  58 sub parse_log_message {
  59         my $file = shift;
  60
  61         # Get a log of the file.
  62         open LOG, "cvs -R log $file 2>/dev/null |" or die $!;
  63         my @log = <LOG>;
  64         my $log = join "", @log;
  65         close LOG;
  66
  67         # Split the log into revisions.
  68         my @entries = split /(?<=\n)-{28}\n(?=revision\s)/, $log;
  69
  70         # Throw away the first entry.
  71         shift @entries;
  72
  73         # Record the hash of the message against the revision.
  74         my %loghash = ();
  75         foreach my $e (@entries) {
  76                 # Get the revision number
  77                 $e =~ s/^revision\s+(\S+)(\s+locked\s+by:\s+\w+;)?\n//s;
  78                 my $rev = $1;
  79
  80                 # Strip off any other headers.
  81                 my $user;
  82                 while ($e =~ s/^(date|branches):([^\n]*)\n//sg) {
  83                         my $sub = $2;
  84                         $user = $1 if $sub =~ /author: (.*?);/;
  85                 };
  86
  87                 my $hash = string_to_hash($e);
  88                 $loghash{$rev} = "$user:$hash";
  89         }
  90
  91         return %loghash;
  92 }
  93
  94
  95 ##################################################
  96 # Convert a log message into an md5 checksum.
  97 ##################################################
  98 sub string_to_hash {
  99         my $logmsg = shift;
 100
 101         return md5_hex($logmsg);
 102 }
 103
 104
 105
 106 #end