585 lines
14 KiB
Perl
Executable File
585 lines
14 KiB
Perl
Executable File
#!/usr/bin/perl -w
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# This tool is copyright (c) 2005, Matthias Urlichs.
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# It is released under the Gnu Public License, version 2.
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#
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# The basic idea is to aggregate CVS check-ins into related changes.
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# Fortunately, "cvsps" does that for us; all we have to do is to parse
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# its output.
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#
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# Checking out the files is done by a single long-running CVS connection
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# / server process.
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#
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# The head revision is on branch "origin" by default.
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# You can change that with the '-o' option.
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use strict;
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use warnings;
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use Getopt::Std;
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use File::Path qw(mkpath);
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use File::Basename qw(basename dirname);
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use Time::Local;
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use POSIX qw(strftime);
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$SIG{'PIPE'}="IGNORE";
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$ENV{'TZ'}="UTC";
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our($opt_h,$opt_o,$opt_v);
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sub usage() {
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print STDERR <<END;
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Usage: ${\basename $0} -- fetch/update GIT from CVS
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[ -h (help) ]
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[ -v (verbose) ] [ -o name-of-HEAD ]
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CVS_archive GIT_dest
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END
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exit(1);
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}
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getopts("hqvo:") or usage();
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usage if $opt_h;
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@ARGV == 2 or usage();
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$opt_o ||= "origin";
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my($cvs_tree, $git_tree) = @ARGV;
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select(STDERR); $|=1; select(STDOUT);
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package CVSconn;
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# Basic CVS dialog.
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# We're only interested in downloading files.
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sub new {
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my($what,$repo,$subdir) = @_;
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$what=ref($what) if ref($what);
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my $self = {};
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$self->{'buffer'} = "";
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bless($self,$what);
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$repo =~ s#/+$##;
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$self->{'fullrep'} = $repo;
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$self->conn();
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$self->{'subdir'} = $subdir;
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$self->{'lines'} = undef;
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return $self;
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}
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sub conn {
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my $self = shift;
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my $repo = $self->{'fullrep'};
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if($repo =~ s/^:pserver:(?:(.*?)(?::(.*?))?@)?([^:\/]*)(?::(\d*))?//) {
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my($user,$pass,$serv,$port) = ($1,$2,$3,$4);
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$user="anonymous" unless defined $user;
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my $rr2;
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unless($port) {
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$rr2 = ":pserver:$user\@$serv:$repo";
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$port=2401;
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}
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my $rr = ":pserver:$user\@$serv:$port$repo";
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unless($pass) {
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open(H,$ENV{'HOME'}."/.cvspass") and do {
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# :pserver:cvs@mea.tmt.tele.fi:/cvsroot/zmailer Ah<Z
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while(<H>) {
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chomp;
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s/^\/\d+\s+//;
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my ($w,$p) = split(/\s/,$_,2);
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if($w eq $rr or $w eq $rr2) {
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$pass = $p;
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last;
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}
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}
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};
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}
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$pass="A" unless $pass;
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use IO::Socket;
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my $s = IO::Socket::INET->new(PeerHost => $serv, PeerPort => $port);
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die "Socket to $serv: $!\n" unless defined $s;
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$s->write("BEGIN AUTH REQUEST\n$repo\n$user\n$pass\nEND AUTH REQUEST\n")
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or die "Write to $serv: $!\n";
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$s->flush();
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my $rep = <$s>;
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if($rep ne "I LOVE YOU\n") {
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$rep="<unknown>" unless $rep;
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die "AuthReply: $rep\n";
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}
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$self->{'socketo'} = $s;
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$self->{'socketi'} = $s;
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} else { # local: Fork off our own cvs server.
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use IO::Pipe;
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my $pr = IO::Pipe->new();
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my $pw = IO::Pipe->new();
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my $pid = fork();
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die "Fork: $!\n" unless defined $pid;
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unless($pid) {
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$pr->writer();
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$pw->reader();
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use POSIX qw(dup2);
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dup2($pw->fileno(),0);
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dup2($pr->fileno(),1);
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$pr->close();
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$pw->close();
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exec("cvs","server");
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}
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$pw->writer();
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$pr->reader();
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$self->{'socketo'} = $pw;
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$self->{'socketi'} = $pr;
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}
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$self->{'socketo'}->write("Root $repo\n");
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# Trial and error says that this probably is the minimum set
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$self->{'socketo'}->write("Valid-responses ok error Valid-requests Mode M Mbinary E F Checked-in Created Updated Merged Removed\n");
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$self->{'socketo'}->write("valid-requests\n");
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$self->{'socketo'}->flush();
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chomp(my $rep=$self->readline());
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if($rep !~ s/^Valid-requests\s*//) {
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$rep="<unknown>" unless $rep;
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die "Expected Valid-requests from server, but got: $rep\n";
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}
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chomp(my $res=$self->readline());
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die "validReply: $res\n" if $res ne "ok";
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$self->{'socketo'}->write("UseUnchanged\n") if $rep =~ /\bUseUnchanged\b/;
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$self->{'repo'} = $repo;
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}
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sub readline {
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my($self) = @_;
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return $self->{'socketi'}->getline();
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}
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sub _file {
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# Request a file with a given revision.
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# Trial and error says this is a good way to do it. :-/
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my($self,$fn,$rev) = @_;
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$self->{'socketo'}->write("Argument -N\n") or return undef;
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$self->{'socketo'}->write("Argument -P\n") or return undef;
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# $self->{'socketo'}->write("Argument -ko\n") or return undef;
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# -ko: Linus' version doesn't use it
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$self->{'socketo'}->write("Argument -r\n") or return undef;
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$self->{'socketo'}->write("Argument $rev\n") or return undef;
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$self->{'socketo'}->write("Argument --\n") or return undef;
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$self->{'socketo'}->write("Argument $self->{'subdir'}/$fn\n") or return undef;
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$self->{'socketo'}->write("Directory .\n") or return undef;
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$self->{'socketo'}->write("$self->{'repo'}\n") or return undef;
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$self->{'socketo'}->write("Sticky T1.1\n") or return undef;
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$self->{'socketo'}->write("co\n") or return undef;
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$self->{'socketo'}->flush() or return undef;
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$self->{'lines'} = 0;
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return 1;
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}
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sub _line {
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# Read a line from the server.
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# ... except that 'line' may be an entire file. ;-)
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my($self) = @_;
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die "Not in lines" unless defined $self->{'lines'};
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my $line;
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my $res="";
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while(defined($line = $self->readline())) {
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# M U gnupg-cvs-rep/AUTHORS
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# Updated gnupg-cvs-rep/
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# /daten/src/rsync/gnupg-cvs-rep/AUTHORS
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# /AUTHORS/1.1///T1.1
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# u=rw,g=rw,o=rw
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# 0
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# ok
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if($line =~ s/^(?:Created|Updated) //) {
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$line = $self->readline(); # path
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$line = $self->readline(); # Entries line
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my $mode = $self->readline(); chomp $mode;
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$self->{'mode'} = $mode;
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defined (my $cnt = $self->readline())
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or die "EOF from server after 'Changed'\n";
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chomp $cnt;
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die "Duh: Filesize $cnt" if $cnt !~ /^\d+$/;
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$line="";
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$res="";
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while($cnt) {
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my $buf;
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my $num = $self->{'socketi'}->read($buf,$cnt);
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die "Server: Filesize $cnt: $num: $!\n" if not defined $num or $num<=0;
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$res .= $buf;
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$cnt -= $num;
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}
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} elsif($line =~ s/^ //) {
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$res .= $line;
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} elsif($line =~ /^M\b/) {
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# output, do nothing
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} elsif($line =~ /^Mbinary\b/) {
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my $cnt;
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die "EOF from server after 'Mbinary'" unless defined ($cnt = $self->readline());
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chomp $cnt;
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die "Duh: Mbinary $cnt" if $cnt !~ /^\d+$/ or $cnt<1;
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$line="";
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while($cnt) {
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my $buf;
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my $num = $self->{'socketi'}->read($buf,$cnt);
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die "S: Mbinary $cnt: $num: $!\n" if not defined $num or $num<=0;
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$res .= $buf;
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$cnt -= $num;
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}
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} else {
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chomp $line;
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if($line eq "ok") {
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# print STDERR "S: ok (".length($res).")\n";
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return $res;
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} elsif($line =~ s/^E //) {
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# print STDERR "S: $line\n";
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} else {
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die "Unknown: $line\n";
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}
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}
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}
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}
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sub file {
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my($self,$fn,$rev) = @_;
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my $res;
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if ($self->_file($fn,$rev)) {
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$res = $self->_line();
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return $res if defined $res;
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}
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# retry
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$self->conn();
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$self->_file($fn,$rev)
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or die "No file command send\n";
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$res = $self->_line();
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die "No input: $fn $rev\n" unless defined $res;
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return $res;
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}
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package main;
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my $cvs = CVSconn->new(dirname($cvs_tree), basename($cvs_tree));
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sub pdate($) {
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my($d) = @_;
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m#(\d{2,4})/(\d\d)/(\d\d)\s(\d\d):(\d\d)(?::(\d\d))?#
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or die "Unparseable date: $d\n";
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my $y=$1; $y-=1900 if $y>1900;
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return timegm($6||0,$5,$4,$3,$2-1,$y);
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}
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sub pmode($) {
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my($mode) = @_;
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my $m = 0;
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my $mm = 0;
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my $um = 0;
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for my $x(split(//,$mode)) {
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if($x eq ",") {
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$m |= $mm&$um;
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$mm = 0;
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$um = 0;
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} elsif($x eq "u") { $um |= 0700;
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} elsif($x eq "g") { $um |= 0070;
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} elsif($x eq "o") { $um |= 0007;
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} elsif($x eq "r") { $mm |= 0444;
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} elsif($x eq "w") { $mm |= 0222;
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} elsif($x eq "x") { $mm |= 0111;
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} elsif($x eq "=") { # do nothing
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} else { die "Unknown mode: $mode\n";
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}
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}
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$m |= $mm&$um;
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return $m;
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}
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my $tmpcv = "/var/cache/cvs";
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sub getwd() {
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my $pwd = `pwd`;
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chomp $pwd;
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return $pwd;
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}
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-d $git_tree
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or mkdir($git_tree,0777)
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or die "Could not create $git_tree: $!";
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chdir($git_tree);
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my $last_branch = "";
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my %branch_date;
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my $git_dir = $ENV{"GIT_DIR"} || ".git";
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$git_dir = getwd()."/".$git_dir unless $git_dir =~ m#^/#;
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$ENV{"GIT_DIR"} = $git_dir;
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unless(-d $git_dir) {
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system("git-init-db");
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die "Cannot init the GIT db at $git_tree: $?\n" if $?;
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system("git-read-tree");
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die "Cannot init an empty tree: $?\n" if $?;
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$last_branch = $opt_o;
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} else {
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$last_branch = basename(readlink("$git_dir/HEAD"));
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die "Cannot read the last branch name: $!\n" unless $last_branch;
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# Get the last import timestamps
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opendir(D,"$git_dir/refs/heads");
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while(defined(my $head = readdir(D))) {
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next if $head =~ /^\./;
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open(F,"$git_dir/refs/heads/$head")
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or die "Bad head branch: $head: $!\n";
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chomp(my $ftag = <F>);
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close(F);
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open(F,"git-cat-file commit $ftag |");
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while(<F>) {
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next unless /^author\s.*\s(\d+)\s[-+]\d{4}$/;
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$branch_date{$head} = $1;
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last;
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}
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close(F);
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}
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closedir(D);
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}
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-d $git_dir
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or die "Could not create git subdir ($git_dir).\n";
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my $pid = open(CVS,"-|");
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die "Cannot fork: $!\n" unless defined $pid;
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unless($pid) {
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exec("cvsps","-A","--cvs-direct",$cvs_tree);
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die "Could not start cvsps: $!\n";
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}
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## cvsps output:
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#---------------------
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#PatchSet 314
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#Date: 1999/09/18 13:03:59
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#Author: wkoch
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#Branch: STABLE-BRANCH-1-0
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#Ancestor branch: HEAD
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#Tag: (none)
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#Log:
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# See ChangeLog: Sat Sep 18 13:03:28 CEST 1999 Werner Koch
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#Members:
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# README:1.57->1.57.2.1
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# VERSION:1.96->1.96.2.1
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#
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#---------------------
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my $state = 0;
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my($patchset,$date,$author,$branch,$ancestor,$tag,$logmsg);
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my(@old,@new);
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my $commit = sub {
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my $pid;
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system("git-update-cache","--force-remove","--",@old) if @old;
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die "Cannot remove files: $?\n" if $?;
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system("git-update-cache","--add","--",@new) if @new;
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die "Cannot add files: $?\n" if $?;
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$pid = open(C,"-|");
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die "Cannot fork: $!" unless defined $pid;
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unless($pid) {
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exec("git-write-tree");
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die "Cannot exec git-write-tree: $!\n";
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}
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chomp(my $tree = <C>);
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length($tree) == 40
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or die "Cannot get tree id ($tree): $!\n";
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close(C)
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or die "Error running git-write-tree: $?\n";
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print "Tree ID $tree\n" if $opt_v;
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my $parent = "";
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if(open(C,"$git_dir/refs/heads/$last_branch")) {
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chomp($parent = <C>);
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close(C);
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length($parent) == 40
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or die "Cannot get parent id ($parent): $!\n";
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print "Parent ID $parent\n" if $opt_v;
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}
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pipe(I,O)
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or die "No pipe: $!\n";
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$pid = open(C,"|-");
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die "Cannot fork: $!" unless defined $pid;
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unless($pid) {
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close(I);
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open(STDOUT,">&O");
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my @par = ();
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@par = ("-p",$parent) if $parent;
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exec("env",
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"GIT_AUTHOR_NAME=$author",
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"GIT_AUTHOR_EMAIL=$author",
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"GIT_AUTHOR_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
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"GIT_COMMITTER_NAME=$author",
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"GIT_COMMITTER_EMAIL=$author",
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"GIT_COMMITTER_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
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"git-commit-tree", $tree,@par);
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die "Cannot exec git-commit-tree: $!\n";
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}
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close(O);
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print C $logmsg
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or die "Error writing to git-commit-tree: $!\n";
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close(C)
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or die "Error running git-commit-tree: $?\n";
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print "Committed patch $patchset ($branch)\n" if $opt_v;
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chomp(my $cid = <I>);
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length($cid) == 40
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or die "Cannot get commit id ($cid): $!\n";
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print "Commit ID $cid\n" if $opt_v;
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close(I);
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open(C,">$git_dir/refs/heads/$branch")
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or die "Cannot open branch $branch for update: $!\n";
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print C "$cid\n"
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or die "Cannot write branch $branch for update: $!\n";
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close(C)
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or die "Cannot write branch $branch for update: $!\n";
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if($tag) {
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open(C,">$git_dir/refs/tags/$tag")
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or die "Cannot create tag $tag: $!\n";
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print C "$cid\n"
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or die "Cannot write tag $branch: $!\n";
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close(C)
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or die "Cannot write tag $branch: $!\n";
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print "Created tag '$tag' on '$branch'\n" if $opt_v;
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}
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@old = ();
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@new = ();
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};
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while(<CVS>) {
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chomp;
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if($state == 0 and /^-+$/) {
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$state = 1;
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} elsif($state == 0) {
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$state = 1;
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redo;
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} elsif(($state==0 or $state==1) and s/^PatchSet\s+//) {
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$patchset = 0+$_;
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$state=2;
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} elsif($state == 2 and s/^Date:\s+//) {
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$date = pdate($_);
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unless($date) {
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print STDERR "Could not parse date: $_\n";
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$state=0;
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next;
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}
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$state=3;
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} elsif($state == 3 and s/^Author:\s+//) {
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s/\s+$//;
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$author = $_;
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$state = 4;
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} elsif($state == 4 and s/^Branch:\s+//) {
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s/\s+$//;
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$branch = $_;
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$state = 5;
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} elsif($state == 5 and s/^Ancestor branch:\s+//) {
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s/\s+$//;
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$ancestor = $_;
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$ancestor = $opt_o if $ancestor == "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";
|
|
$state = 11;
|
|
next;
|
|
}
|
|
if($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 = <H>);
|
|
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) {
|
|
system("git-read-tree -m -u $last_branch $branch");
|
|
die "read-tree $branch failed at $branch: $?\n" if $?;
|
|
}
|
|
if($branch ne $last_branch) {
|
|
unlink("$git_dir/HEAD");
|
|
symlink("refs/heads/$branch","$git_dir/HEAD");
|
|
$last_branch = $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 $fn = $1;
|
|
my $data = $cvs->file($fn,$2);
|
|
print "Update $fn: ".length($data)." bytes.\n";
|
|
mkpath(dirname($fn),$opt_v);
|
|
open(F,"> ./$fn")
|
|
or die "Cannot create '$fn': $!\n";
|
|
print F $data
|
|
or die "Cannot write to '$fn': $!\n";
|
|
close(F)
|
|
or die "Cannot write to '$fn': $!\n";
|
|
chmod(pmode($cvs->{'mode'}), $fn);
|
|
push(@new,$fn); # may be resurrected!
|
|
} elsif($state == 9 and /^\s+(\S+):\d(?:\.\d+)+->(\d(?:\.\d+)+)\(DEAD\)\s*$/) {
|
|
push(@old,$1);
|
|
} elsif($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;
|
|
|
|
print "DONE\n" if $opt_v;
|