b092133103
The git-cvsimport-script had a copule of small bugs that prevented me from importing a big CVS repository. The first was that it didn't handle removed files with a multi-digit primary revision number. The second was that it was asking the CVS server for "F" messages, although they were not handled. I also updated the documentation for that script to correspond to actual flags. Signed-off-by: David K?5gedal <davidk@lysator.liu.se> Signed-off-by: Junio C Hamano <junkio@cox.net>
755 lines
19 KiB
Perl
Executable File
755 lines
19 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::Spec;
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use File::Temp qw(tempfile);
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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 IO::Socket;
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use IO::Pipe;
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use POSIX qw(strftime dup2);
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$SIG{'PIPE'}="IGNORE";
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$ENV{'TZ'}="UTC";
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our($opt_h,$opt_o,$opt_v,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i);
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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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[ -o branch-for-HEAD ] [ -h ] [ -v ] [ -d CVSROOT ]
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[ -p opts-for-cvsps ] [ -C GIT_repository ] [ -z fuzz ]
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[ -i ] [ CVS_module ]
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END
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exit(1);
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}
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getopts("hivo:d:p:C:z:") or usage();
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usage if $opt_h;
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@ARGV <= 1 or usage();
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if($opt_d) {
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$ENV{"CVSROOT"} = $opt_d;
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} elsif(-f 'CVS/Root') {
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open my $f, '<', 'CVS/Root' or die 'Failed to open CVS/Root';
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$opt_d = <$f>;
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chomp $opt_d;
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close $f;
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$ENV{"CVSROOT"} = $opt_d;
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} elsif($ENV{"CVSROOT"}) {
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$opt_d = $ENV{"CVSROOT"};
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} else {
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die "CVSROOT needs to be set";
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}
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$opt_o ||= "origin";
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my $git_tree = $opt_C;
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$git_tree ||= ".";
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my $cvs_tree;
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if ($#ARGV == 0) {
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$cvs_tree = $ARGV[0];
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} elsif (-f 'CVS/Repository') {
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open my $f, '<', 'CVS/Repository' or
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die 'Failed to open CVS/Repository';
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$cvs_tree = <$f>;
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chomp $cvs_tree;
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close $f
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} else {
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usage();
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}
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select(STDERR); $|=1; select(STDOUT);
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package CVSconn;
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# Basic CVS dialog.
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# We're only interested in connecting and downloading, so ...
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use File::Spec;
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use File::Temp qw(tempfile);
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use POSIX qw(strftime dup2);
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sub new {
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my($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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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 or ext: Fork off our own cvs server.
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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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my $cvs = 'cvs';
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$cvs = $ENV{CVS_SERVER} if exists $ENV{CVS_SERVER};
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my $rsh = 'rsh';
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$rsh = $ENV{CVS_RSH} if exists $ENV{CVS_RSH};
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my @cvs = ($cvs, 'server');
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my ($local, $user, $host);
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$local = $repo =~ s/:local://;
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if (!$local) {
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$repo =~ s/:ext://;
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$local = !($repo =~ s/^(?:([^\@:]+)\@)?([^:]+)://);
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($user, $host) = ($1, $2);
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}
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if (!$local) {
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if ($user) {
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unshift @cvs, $rsh, '-l', $user, $host;
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} else {
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unshift @cvs, $rsh, $host;
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}
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}
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unless($pid) {
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$pr->writer();
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$pw->reader();
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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);
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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 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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# $self->{'socketo'}->write("Sticky T1.0\n") or return undef;
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$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, $fh) = @_;
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die "Not in lines" unless defined $self->{'lines'};
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my $line;
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my $res=0;
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while(defined($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=0;
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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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print $fh $buf;
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$res += $num;
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$cnt -= $num;
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}
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} elsif($line =~ s/^ //) {
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print $fh $line;
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$res += length($line);
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} elsif($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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print $fh $buf;
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$res += $num;
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$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: $line\n";
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} elsif($line =~ /^Remove-entry /i) {
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$line = $self->readline(); # filename
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$line = $self->readline(); # OK
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chomp $line;
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die "Unknown: $line" if $line ne "ok";
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return -1;
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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 $res;
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my ($fh, $name) = tempfile('gitcvs.XXXXXX',
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DIR => File::Spec->tmpdir(), UNLINK => 1);
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$self->_file($fn,$rev) and $res = $self->_line($fh);
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if (!defined $res) {
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# retry
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$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 = $self->_line($fh);
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die "No input: $fn $rev\n" unless defined $res;
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}
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close ($fh);
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return ($name, $res);
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}
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package main;
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my $cvs = CVSconn->new($opt_d, $cvs_tree);
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sub pdate($) {
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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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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 $orig_branch = "";
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my $forward_master = 0;
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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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my $orig_git_index;
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$orig_git_index = $ENV{GIT_INDEX_FILE} if exists $ENV{GIT_INDEX_FILE};
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my ($git_ih, $git_index) = tempfile('gitXXXXXX', SUFFIX => '.idx',
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DIR => File::Spec->tmpdir());
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close ($git_ih);
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$ENV{GIT_INDEX_FILE} = $git_index;
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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 = $opt_o;
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$orig_branch = "";
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} else {
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-f "$git_dir/refs/heads/$opt_o"
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or die "Branch '$opt_o' does not exist.\n".
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"Either use the correct '-o branch' option,\n".
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"or import to a new repository.\n";
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$last_branch = basename(readlink("$git_dir/HEAD"));
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unless($last_branch) {
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warn "Cannot read the last branch name: $! -- assuming 'master'\n";
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$last_branch = "master";
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}
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$orig_branch = $last_branch;
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if (-f "$git_dir/CVS2GIT_HEAD") {
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die <<EOM;
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CVS2GIT_HEAD exists.
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Make sure your working directory corresponds to HEAD and remove CVS2GIT_HEAD.
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You may need to run
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git-read-tree -m -u CVS2GIT_HEAD HEAD
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EOM
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}
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system('cp', "$git_dir/HEAD", "$git_dir/CVS2GIT_HEAD");
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$forward_master =
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$opt_o ne 'master' && -f "$git_dir/refs/heads/master" &&
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system('cmp', '-s', "$git_dir/refs/heads/master",
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"$git_dir/refs/heads/$opt_o") == 0;
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# populate index
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system('git-read-tree', $last_branch);
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die "read-tree failed: $?\n" if $?;
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# Get the last import timestamps
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opendir(D,"$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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my @opt;
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@opt = split(/,/,$opt_p) if defined $opt_p;
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unshift @opt, '-z', $opt_z if defined $opt_z;
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exec("cvsps",@opt,"-u","-A","--cvs-direct",'--root',$opt_d,$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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while(@old) {
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my @o2;
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if(@old > 55) {
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@o2 = splice(@old,0,50);
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} else {
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@o2 = @old;
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@old = ();
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}
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system("git-update-cache","--force-remove","--",@o2);
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die "Cannot remove files: $?\n" if $?;
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}
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while(@new) {
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my @n2;
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if(@new > 12) {
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@n2 = splice(@new,0,10);
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} else {
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@n2 = @new;
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@new = ();
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}
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system("git-update-cache","--add",
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(map { ('--cacheinfo', @$_) } @n2));
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die "Cannot add files: $?\n" if $?;
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}
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$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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my $pr = IO::Pipe->new() or die "Cannot open pipe: $!\n";
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my $pw = IO::Pipe->new() or die "Cannot open pipe: $!\n";
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$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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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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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: $!\n";
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}
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$pw->writer();
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$pr->reader();
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# compatibility with git2cvs
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substr($logmsg,32767) = "" if length($logmsg) > 32767;
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$logmsg =~ s/[\s\n]+\z//;
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print $pw "$logmsg\n"
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or die "Error writing to git-commit-tree: $!\n";
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$pw->close();
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print "Committed patch $patchset ($branch ".strftime("%Y-%m-%d %H:%M:%S",gmtime($date)).")\n" if $opt_v;
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chomp(my $cid = <$pr>);
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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 $opt_v;
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$pr->close();
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waitpid($pid,0);
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die "Error running git-commit-tree: $?\n" if $?;
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open(C,">$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 $opt_v;
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}
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};
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while(<CVS>) {
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chomp;
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if($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 $ancestor eq "HEAD";
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$state = 6;
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} elsif($state == 5) {
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$ancestor = undef;
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$state = 6;
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redo;
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} elsif($state == 6 and s/^Tag:\s+//) {
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s/\s+$//;
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if($_ eq "(none)") {
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$tag = undef;
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} else {
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$tag = $_;
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}
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$state = 7;
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} elsif($state == 7 and /^Log:/) {
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$logmsg = "";
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$state = 8;
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} elsif($state == 8 and /^Members:/) {
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$branch = $opt_o if $branch eq "HEAD";
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if(defined $branch_date{$branch} and $branch_date{$branch} >= $date) {
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# skip
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print "skip patchset $patchset: $date before $branch_date{$branch}\n" if $opt_v;
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$state = 11;
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next;
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}
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if($ancestor) {
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if(-f "$git_dir/refs/heads/$branch") {
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print STDERR "Branch $branch already exists!\n";
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$state=11;
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next;
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}
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unless(open(H,"$git_dir/refs/heads/$ancestor")) {
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print STDERR "Branch $ancestor does not exist!\n";
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$state=11;
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next;
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}
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chomp(my $id = <H>);
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close(H);
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unless(open(H,"> $git_dir/refs/heads/$branch")) {
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print STDERR "Could not create branch $branch: $!\n";
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$state=11;
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next;
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}
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print H "$id\n"
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or die "Could not write branch $branch: $!";
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close(H)
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or die "Could not write branch $branch: $!";
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}
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if(($ancestor || $branch) ne $last_branch) {
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print "Switching from $last_branch to $branch\n" if $opt_v;
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system("git-read-tree", $branch);
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die "read-tree failed: $?\n" if $?;
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}
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$last_branch = $branch if $branch ne $last_branch;
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$state = 9;
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} elsif($state == 8) {
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$logmsg .= "$_\n";
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} elsif($state == 9 and /^\s+(.+?):(INITIAL|\d+(?:\.\d+)+)->(\d+(?:\.\d+)+)\s*$/) {
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# VERSION:1.96->1.96.2.1
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my $init = ($2 eq "INITIAL");
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my $fn = $1;
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my $rev = $3;
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$fn =~ s#^/+##;
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my ($tmpname, $size) = $cvs->file($fn,$rev);
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if($size == -1) {
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push(@old,$fn);
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print "Drop $fn\n" if $opt_v;
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} else {
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print "".($init ? "New" : "Update")." $fn: $size bytes\n" if $opt_v;
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open my $F, '-|', "git-hash-object -w $tmpname"
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or die "Cannot create object: $!\n";
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my $sha = <$F>;
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chomp $sha;
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close $F;
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my $mode = pmode($cvs->{'mode'});
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push(@new,[$mode, $sha, $fn]); # may be resurrected!
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}
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unlink($tmpname);
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} elsif($state == 9 and /^\s+(.+?):\d+(?:\.\d+)+->(\d+(?:\.\d+)+)\(DEAD\)\s*$/) {
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my $fn = $1;
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$fn =~ s#^/+##;
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push(@old,$fn);
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print "Delete $fn\n" if $opt_v;
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} elsif($state == 9 and /^\s*$/) {
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$state = 10;
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} elsif(($state == 9 or $state == 10) and /^-+$/) {
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&$commit();
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$state = 1;
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} elsif($state == 11 and /^-+$/) {
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$state = 1;
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} elsif(/^-+$/) { # end of unknown-line processing
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$state = 1;
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} elsif($state != 11) { # ignore stuff when skipping
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print "* UNKNOWN LINE * $_\n";
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}
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}
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&$commit() if $branch and $state != 11;
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unlink($git_index);
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if (defined $orig_git_index) {
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$ENV{GIT_INDEX_FILE} = $orig_git_index;
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} else {
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delete $ENV{GIT_INDEX_FILE};
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}
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# Now switch back to the branch we were in before all of this happened
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if($orig_branch) {
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print "DONE\n" if $opt_v;
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system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
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if $forward_master;
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unless ($opt_i) {
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system('git-read-tree', '-m', '-u', 'CVS2GIT_HEAD', 'HEAD');
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die "read-tree failed: $?\n" if $?;
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}
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} else {
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$orig_branch = "master";
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print "DONE; creating $orig_branch branch\n" if $opt_v;
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system("cp","$git_dir/refs/heads/$opt_o","$git_dir/refs/heads/master")
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unless -f "$git_dir/refs/heads/master";
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unlink("$git_dir/HEAD");
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symlink("refs/heads/$orig_branch","$git_dir/HEAD");
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unless ($opt_i) {
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system('git checkout');
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die "checkout failed: $?\n" if $?;
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}
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}
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unlink("$git_dir/CVS2GIT_HEAD");
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