#!/usr/bin/perl -w # This tool is copyright (c) 2005, Matthias Urlichs. # It is released under the Gnu Public License, version 2. # # The basic idea is to aggregate CVS check-ins into related changes. # Fortunately, "cvsps" does that for us; all we have to do is to parse # its output. # # Checking out the files is done by a single long-running CVS connection # / server process. # # The head revision is on branch "origin" by default. # You can change that with the '-o' option. use strict; use warnings; use Getopt::Std; use File::Spec; use File::Temp qw(tempfile); use File::Path qw(mkpath); use File::Basename qw(basename dirname); use Time::Local; use IO::Socket; use IO::Pipe; use POSIX qw(strftime dup2); $SIG{'PIPE'}="IGNORE"; $ENV{'TZ'}="UTC"; our($opt_h,$opt_o,$opt_v,$opt_d,$opt_p,$opt_C,$opt_z); sub usage() { print STDERR <; chomp $opt_d; close $f; $ENV{"CVSROOT"} = $opt_d; } elsif($ENV{"CVSROOT"}) { $opt_d = $ENV{"CVSROOT"}; } else { die "CVSROOT needs to be set"; } $opt_o ||= "origin"; my $git_tree = $opt_C; $git_tree ||= "."; my $cvs_tree; if ($#ARGV == 0) { $cvs_tree = $ARGV[0]; } elsif (-f 'CVS/Repository') { open my $f, '<', 'CVS/Repository' or die 'Failed to open CVS/Repository'; $cvs_tree = <$f>; chomp $cvs_tree; close $f } else { usage(); } select(STDERR); $|=1; select(STDOUT); package CVSconn; # Basic CVS dialog. # We're only interested in connecting and downloading, so ... use File::Spec; use File::Temp qw(tempfile); use POSIX qw(strftime dup2); sub new { my($what,$repo,$subdir) = @_; $what=ref($what) if ref($what); my $self = {}; $self->{'buffer'} = ""; bless($self,$what); $repo =~ s#/+$##; $self->{'fullrep'} = $repo; $self->conn(); $self->{'subdir'} = $subdir; $self->{'lines'} = undef; return $self; } sub conn { my $self = shift; my $repo = $self->{'fullrep'}; if($repo =~ s/^:pserver:(?:(.*?)(?::(.*?))?@)?([^:\/]*)(?::(\d*))?//) { my($user,$pass,$serv,$port) = ($1,$2,$3,$4); $user="anonymous" unless defined $user; my $rr2 = "-"; unless($port) { $rr2 = ":pserver:$user\@$serv:$repo"; $port=2401; } my $rr = ":pserver:$user\@$serv:$port$repo"; unless($pass) { open(H,$ENV{'HOME'}."/.cvspass") and do { # :pserver:cvs@mea.tmt.tele.fi:/cvsroot/zmailer Ah) { chomp; s/^\/\d+\s+//; my ($w,$p) = split(/\s/,$_,2); if($w eq $rr or $w eq $rr2) { $pass = $p; last; } } }; } $pass="A" unless $pass; my $s = IO::Socket::INET->new(PeerHost => $serv, PeerPort => $port); die "Socket to $serv: $!\n" unless defined $s; $s->write("BEGIN AUTH REQUEST\n$repo\n$user\n$pass\nEND AUTH REQUEST\n") or die "Write to $serv: $!\n"; $s->flush(); my $rep = <$s>; if($rep ne "I LOVE YOU\n") { $rep="" unless $rep; die "AuthReply: $rep\n"; } $self->{'socketo'} = $s; $self->{'socketi'} = $s; } else { # local or ext: Fork off our own cvs server. my $pr = IO::Pipe->new(); my $pw = IO::Pipe->new(); my $pid = fork(); die "Fork: $!\n" unless defined $pid; my $cvs = 'cvs'; $cvs = $ENV{CVS_SERVER} if exists $ENV{CVS_SERVER}; my $rsh = 'rsh'; $rsh = $ENV{CVS_RSH} if exists $ENV{CVS_RSH}; my @cvs = ($cvs, 'server'); my ($local, $user, $host); $local = $repo =~ s/:local://; if (!$local) { $repo =~ s/:ext://; $local = !($repo =~ s/^(?:([^\@:]+)\@)?([^:]+)://); ($user, $host) = ($1, $2); } if (!$local) { if ($user) { unshift @cvs, $rsh, '-l', $user, $host; } else { unshift @cvs, $rsh, $host; } } unless($pid) { $pr->writer(); $pw->reader(); dup2($pw->fileno(),0); dup2($pr->fileno(),1); $pr->close(); $pw->close(); exec(@cvs); } $pw->writer(); $pr->reader(); $self->{'socketo'} = $pw; $self->{'socketi'} = $pr; } $self->{'socketo'}->write("Root $repo\n"); # Trial and error says that this probably is the minimum set $self->{'socketo'}->write("Valid-responses ok error Valid-requests Mode M Mbinary E F Checked-in Created Updated Merged Removed\n"); $self->{'socketo'}->write("valid-requests\n"); $self->{'socketo'}->flush(); chomp(my $rep=$self->readline()); if($rep !~ s/^Valid-requests\s*//) { $rep="" unless $rep; die "Expected Valid-requests from server, but got: $rep\n"; } chomp(my $res=$self->readline()); die "validReply: $res\n" if $res ne "ok"; $self->{'socketo'}->write("UseUnchanged\n") if $rep =~ /\bUseUnchanged\b/; $self->{'repo'} = $repo; } sub readline { my($self) = @_; return $self->{'socketi'}->getline(); } sub _file { # Request a file with a given revision. # Trial and error says this is a good way to do it. :-/ my($self,$fn,$rev) = @_; $self->{'socketo'}->write("Argument -N\n") or return undef; $self->{'socketo'}->write("Argument -P\n") or return undef; # $self->{'socketo'}->write("Argument -ko\n") or return undef; # -ko: Linus' version doesn't use it $self->{'socketo'}->write("Argument -r\n") or return undef; $self->{'socketo'}->write("Argument $rev\n") or return undef; $self->{'socketo'}->write("Argument --\n") or return undef; $self->{'socketo'}->write("Argument $self->{'subdir'}/$fn\n") or return undef; $self->{'socketo'}->write("Directory .\n") or return undef; $self->{'socketo'}->write("$self->{'repo'}\n") or return undef; # $self->{'socketo'}->write("Sticky T1.0\n") or return undef; $self->{'socketo'}->write("co\n") or return undef; $self->{'socketo'}->flush() or return undef; $self->{'lines'} = 0; return 1; } sub _line { # Read a line from the server. # ... except that 'line' may be an entire file. ;-) my($self, $fh) = @_; die "Not in lines" unless defined $self->{'lines'}; my $line; my $res=0; while(defined($line = $self->readline())) { # M U gnupg-cvs-rep/AUTHORS # Updated gnupg-cvs-rep/ # /daten/src/rsync/gnupg-cvs-rep/AUTHORS # /AUTHORS/1.1///T1.1 # u=rw,g=rw,o=rw # 0 # ok if($line =~ s/^(?:Created|Updated) //) { $line = $self->readline(); # path $line = $self->readline(); # Entries line my $mode = $self->readline(); chomp $mode; $self->{'mode'} = $mode; defined (my $cnt = $self->readline()) or die "EOF from server after 'Changed'\n"; chomp $cnt; die "Duh: Filesize $cnt" if $cnt !~ /^\d+$/; $line=""; $res=0; while($cnt) { my $buf; my $num = $self->{'socketi'}->read($buf,$cnt); die "Server: Filesize $cnt: $num: $!\n" if not defined $num or $num<=0; print $fh $buf; $res += $num; $cnt -= $num; } } elsif($line =~ s/^ //) { print $fh $line; $res += length($line); } elsif($line =~ /^M\b/) { # output, do nothing } elsif($line =~ /^Mbinary\b/) { my $cnt; die "EOF from server after 'Mbinary'" unless defined ($cnt = $self->readline()); chomp $cnt; die "Duh: Mbinary $cnt" if $cnt !~ /^\d+$/ or $cnt<1; $line=""; while($cnt) { my $buf; my $num = $self->{'socketi'}->read($buf,$cnt); die "S: Mbinary $cnt: $num: $!\n" if not defined $num or $num<=0; print $fh $buf; $res += $num; $cnt -= $num; } } else { chomp $line; if($line eq "ok") { # print STDERR "S: ok (".length($res).")\n"; return $res; } elsif($line =~ s/^E //) { # print STDERR "S: $line\n"; } else { die "Unknown: $line\n"; } } } } sub file { my($self,$fn,$rev) = @_; my $res; my ($fh, $name) = tempfile('gitcvs.XXXXXX', DIR => File::Spec->tmpdir(), UNLINK => 1); $self->_file($fn,$rev) and $res = $self->_line($fh); if (!defined $res) { # retry $self->conn(); $self->_file($fn,$rev) or die "No file command send\n"; $res = $self->_line($fh); die "No input: $fn $rev\n" unless defined $res; } return ($name, $res); } package main; my $cvs = CVSconn->new($opt_d, $cvs_tree); sub pdate($) { my($d) = @_; m#(\d{2,4})/(\d\d)/(\d\d)\s(\d\d):(\d\d)(?::(\d\d))?# or die "Unparseable date: $d\n"; my $y=$1; $y-=1900 if $y>1900; return timegm($6||0,$5,$4,$3,$2-1,$y); } sub pmode($) { my($mode) = @_; my $m = 0; my $mm = 0; my $um = 0; for my $x(split(//,$mode)) { if($x eq ",") { $m |= $mm&$um; $mm = 0; $um = 0; } elsif($x eq "u") { $um |= 0700; } elsif($x eq "g") { $um |= 0070; } elsif($x eq "o") { $um |= 0007; } elsif($x eq "r") { $mm |= 0444; } elsif($x eq "w") { $mm |= 0222; } elsif($x eq "x") { $mm |= 0111; } elsif($x eq "=") { # do nothing } else { die "Unknown mode: $mode\n"; } } $m |= $mm&$um; return $m; } sub getwd() { my $pwd = `pwd`; chomp $pwd; return $pwd; } -d $git_tree or mkdir($git_tree,0777) or die "Could not create $git_tree: $!"; chdir($git_tree); my $last_branch = ""; my $orig_branch = ""; my $forward_master = 0; my %branch_date; my $git_dir = $ENV{"GIT_DIR"} || ".git"; $git_dir = getwd()."/".$git_dir unless $git_dir =~ m#^/#; $ENV{"GIT_DIR"} = $git_dir; my $orig_git_index; $orig_git_index = $ENV{GIT_INDEX_FILE} if exists $ENV{GIT_INDEX_FILE}; my ($git_ih, $git_index) = tempfile('gitXXXXXX', SUFFIX => '.idx', DIR => File::Spec->tmpdir()); close ($git_ih); $ENV{GIT_INDEX_FILE} = $git_index; unless(-d $git_dir) { system("git-init-db"); die "Cannot init the GIT db at $git_tree: $?\n" if $?; system("git-read-tree"); die "Cannot init an empty tree: $?\n" if $?; $last_branch = $opt_o; $orig_branch = ""; } else { -f "$git_dir/refs/heads/$opt_o" or die "Branch '$opt_o' does not exist.\n". "Either use the correct '-o branch' option,\n". "or import to a new repository.\n"; $last_branch = basename(readlink("$git_dir/HEAD")); unless($last_branch) { warn "Cannot read the last branch name: $! -- assuming 'master'\n"; $last_branch = "master"; } $orig_branch = $last_branch; if (-f "$git_dir/CVS2GIT_HEAD") { die <); close(F); open(F,"git-cat-file commit $ftag |"); while() { next unless /^author\s.*\s(\d+)\s[-+]\d{4}$/; $branch_date{$head} = $1; last; } close(F); } closedir(D); } -d $git_dir or die "Could not create git subdir ($git_dir).\n"; my $pid = open(CVS,"-|"); die "Cannot fork: $!\n" unless defined $pid; unless($pid) { my @opt; @opt = split(/,/,$opt_p) if defined $opt_p; unshift @opt, '-z', $opt_z if defined $opt_z; exec("cvsps",@opt,"-u","-A","--cvs-direct",'--root',$opt_d,$cvs_tree); die "Could not start cvsps: $!\n"; } ## cvsps output: #--------------------- #PatchSet 314 #Date: 1999/09/18 13:03:59 #Author: wkoch #Branch: STABLE-BRANCH-1-0 #Ancestor branch: HEAD #Tag: (none) #Log: # See ChangeLog: Sat Sep 18 13:03:28 CEST 1999 Werner Koch #Members: # README:1.57->1.57.2.1 # VERSION:1.96->1.96.2.1 # #--------------------- my $state = 0; my($patchset,$date,$author,$branch,$ancestor,$tag,$logmsg); my(@old,@new); my $commit = sub { my $pid; while(@old) { my @o2; if(@old > 55) { @o2 = splice(@old,0,50); } else { @o2 = @old; @old = (); } system("git-update-cache","--force-remove","--",@o2); die "Cannot remove files: $?\n" if $?; } while(@new) { my @n2; if(@new > 12) { @n2 = splice(@new,0,10); } else { @n2 = @new; @new = (); } system("git-update-cache","--add", (map { ('--cacheinfo', @$_) } @n2)); die "Cannot add files: $?\n" if $?; } $pid = open(C,"-|"); die "Cannot fork: $!" unless defined $pid; unless($pid) { exec("git-write-tree"); die "Cannot exec git-write-tree: $!\n"; } chomp(my $tree = ); length($tree) == 40 or die "Cannot get tree id ($tree): $!\n"; close(C) or die "Error running git-write-tree: $?\n"; print "Tree ID $tree\n" if $opt_v; my $parent = ""; if(open(C,"$git_dir/refs/heads/$last_branch")) { chomp($parent = ); close(C); length($parent) == 40 or die "Cannot get parent id ($parent): $!\n"; print "Parent ID $parent\n" if $opt_v; } my $pr = IO::Pipe->new() or die "Cannot open pipe: $!\n"; my $pw = IO::Pipe->new() or die "Cannot open pipe: $!\n"; $pid = fork(); die "Fork: $!\n" unless defined $pid; unless($pid) { $pr->writer(); $pw->reader(); dup2($pw->fileno(),0); dup2($pr->fileno(),1); $pr->close(); $pw->close(); my @par = (); @par = ("-p",$parent) if $parent; exec("env", "GIT_AUTHOR_NAME=$author", "GIT_AUTHOR_EMAIL=$author", "GIT_AUTHOR_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)), "GIT_COMMITTER_NAME=$author", "GIT_COMMITTER_EMAIL=$author", "GIT_COMMITTER_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)), "git-commit-tree", $tree,@par); die "Cannot exec git-commit-tree: $!\n"; } $pw->writer(); $pr->reader(); # compatibility with git2cvs substr($logmsg,32767) = "" if length($logmsg) > 32767; $logmsg =~ s/[\s\n]+\z//; print $pw "$logmsg\n" or die "Error writing to git-commit-tree: $!\n"; $pw->close(); print "Committed patch $patchset ($branch)\n" if $opt_v; chomp(my $cid = <$pr>); length($cid) == 40 or die "Cannot get commit id ($cid): $!\n"; print "Commit ID $cid\n" if $opt_v; $pr->close(); waitpid($pid,0); die "Error running git-commit-tree: $?\n" if $?; open(C,">$git_dir/refs/heads/$branch") or die "Cannot open branch $branch for update: $!\n"; print C "$cid\n" or die "Cannot write branch $branch for update: $!\n"; close(C) or die "Cannot write branch $branch for update: $!\n"; if($tag) { open(C,">$git_dir/refs/tags/$tag") or die "Cannot create tag $tag: $!\n"; print C "$cid\n" or die "Cannot write tag $branch: $!\n"; close(C) or die "Cannot write tag $branch: $!\n"; print "Created tag '$tag' on '$branch'\n" if $opt_v; } }; while() { chomp; if($state == 0 and /^-+$/) { $state = 1; } elsif($state == 0) { $state = 1; redo; } elsif(($state==0 or $state==1) and s/^PatchSet\s+//) { $patchset = 0+$_; $state=2; } elsif($state == 2 and s/^Date:\s+//) { $date = pdate($_); unless($date) { print STDERR "Could not parse date: $_\n"; $state=0; next; } $state=3; } elsif($state == 3 and s/^Author:\s+//) { s/\s+$//; $author = $_; $state = 4; } elsif($state == 4 and s/^Branch:\s+//) { s/\s+$//; $branch = $_; $state = 5; } elsif($state == 5 and s/^Ancestor branch:\s+//) { s/\s+$//; $ancestor = $_; $ancestor = $opt_o if $ancestor eq "HEAD"; $state = 6; } elsif($state == 5) { $ancestor = undef; $state = 6; redo; } elsif($state == 6 and s/^Tag:\s+//) { s/\s+$//; if($_ eq "(none)") { $tag = undef; } else { $tag = $_; } $state = 7; } elsif($state == 7 and /^Log:/) { $logmsg = ""; $state = 8; } elsif($state == 8 and /^Members:/) { $branch = $opt_o if $branch eq "HEAD"; if(defined $branch_date{$branch} and $branch_date{$branch} >= $date) { # skip print "skip patchset $patchset: $date before $branch_date{$branch}\n" if $opt_v; $state = 11; next; } if($ancestor) { if(-f "$git_dir/refs/heads/$branch") { print STDERR "Branch $branch already exists!\n"; $state=11; next; } unless(open(H,"$git_dir/refs/heads/$ancestor")) { print STDERR "Branch $ancestor does not exist!\n"; $state=11; next; } chomp(my $id = ); close(H); unless(open(H,"> $git_dir/refs/heads/$branch")) { print STDERR "Could not create branch $branch: $!\n"; $state=11; next; } print H "$id\n" or die "Could not write branch $branch: $!"; close(H) or die "Could not write branch $branch: $!"; } if(($ancestor || $branch) ne $last_branch) { print "Switching from $last_branch to $branch\n" if $opt_v; system("git-read-tree", $branch); die "read-tree failed: $?\n" if $?; } $last_branch = $branch if $branch ne $last_branch; $state = 9; } elsif($state == 8) { $logmsg .= "$_\n"; } elsif($state == 9 and /^\s+(\S+):(INITIAL|\d(?:\.\d+)+)->(\d(?:\.\d+)+)\s*$/) { # VERSION:1.96->1.96.2.1 my $init = ($2 eq "INITIAL"); my $fn = $1; my $rev = $3; $fn =~ s#^/+##; my ($tmpname, $size) = $cvs->file($fn,$rev); print "".($init ? "New" : "Update")." $fn: $size bytes.\n" if $opt_v; open my $F, '-|', "git-write-blob $tmpname" or die "Cannot create object: $!\n"; my $sha = <$F>; chomp $sha; close $F; unlink($tmpname); my $mode = pmode($cvs->{'mode'}); push(@new,[$mode, $sha, $fn]); # may be resurrected! } elsif($state == 9 and /^\s+(\S+):\d(?:\.\d+)+->(\d(?:\.\d+)+)\(DEAD\)\s*$/) { my $fn = $1; $fn =~ s#^/+##; push(@old,$fn); } elsif($state == 9 and /^\s*$/) { $state = 10; } elsif(($state == 9 or $state == 10) and /^-+$/) { &$commit(); $state = 1; } elsif($state == 11 and /^-+$/) { $state = 1; } elsif(/^-+$/) { # end of unknown-line processing $state = 1; } elsif($state != 11) { # ignore stuff when skipping print "* UNKNOWN LINE * $_\n"; } } &$commit() if $branch and $state != 11; unlink($git_index); if (defined $orig_git_index) { $ENV{GIT_INDEX_FILE} = $orig_git_index; } else { delete $ENV{GIT_INDEX_FILE}; } # Now switch back to the branch we were in before all of this happened if($orig_branch) { print "DONE\n" if $opt_v; system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master") if $forward_master; system('git-read-tree', '-m', '-u', 'CVS2GIT_HEAD', 'HEAD'); die "read-tree failed: $?\n" if $?; } else { $orig_branch = "master"; print "DONE; creating $orig_branch branch\n" if $opt_v; system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master") unless -f "$git_dir/refs/heads/master"; unlink("$git_dir/HEAD"); symlink("refs/heads/$orig_branch","$git_dir/HEAD"); system('git checkout'); die "checkout failed: $?\n" if $?; } unlink("$git_dir/CVS2GIT_HEAD");