#!/usr/bin/perl # 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 5.008; use strict; use warnings; use Getopt::Long; use File::Spec; use File::Temp qw(tempfile tmpnam); use File::Path qw(mkpath); use File::Basename qw(basename dirname); use Time::Local; use IO::Socket; use IO::Pipe; use POSIX qw(strftime tzset dup2 ENOENT); use IPC::Open2; use Git qw(get_tz_offset); $SIG{'PIPE'}="IGNORE"; set_timezone('UTC'); our ($opt_h,$opt_o,$opt_v,$opt_k,$opt_u,$opt_d,$opt_p,$opt_C,$opt_z,$opt_i,$opt_P, $opt_s,$opt_m,@opt_M,$opt_A,$opt_S,$opt_L, $opt_a, $opt_r, $opt_R); my (%conv_author_name, %conv_author_email, %conv_author_tz); sub usage(;$) { my $msg = shift; print(STDERR "Error: $msg\n") if $msg; print STDERR <<END; usage: git cvsimport # fetch/update GIT from CVS [-o branch-for-HEAD] [-h] [-v] [-d CVSROOT] [-A author-conv-file] [-p opts-for-cvsps] [-P file] [-C GIT_repository] [-z fuzz] [-i] [-k] [-u] [-s subst] [-a] [-m] [-M regex] [-S regex] [-L commitlimit] [-r remote] [-R] [CVS_module] END exit(1); } sub read_author_info($) { my ($file) = @_; my $user; open my $f, '<', "$file" or die("Failed to open $file: $!\n"); while (<$f>) { # Expected format is this: # exon=Andreas Ericsson <ae@op5.se> if (m/^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/) { $user = $1; $conv_author_name{$user} = $2; $conv_author_email{$user} = $3; } # or with an optional timezone: # spawn=Simon Pawn <spawn@frog-pond.org> America/Chicago elsif (m/^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*(\S+?)\s*$/) { $user = $1; $conv_author_name{$user} = $2; $conv_author_email{$user} = $3; $conv_author_tz{$user} = $4; } # However, we also read from CVSROOT/users format # to ease migration. elsif (/^(\w+):(['"]?)(.+?)\2\s*$/) { my $mapped; ($user, $mapped) = ($1, $3); if ($mapped =~ /^\s*(.*?)\s*<(.*)>\s*$/) { $conv_author_name{$user} = $1; $conv_author_email{$user} = $2; } elsif ($mapped =~ /^<?(.*)>?$/) { $conv_author_name{$user} = $user; $conv_author_email{$user} = $1; } } # NEEDSWORK: Maybe warn on unrecognized lines? } close ($f); } sub write_author_info($) { my ($file) = @_; open my $f, '>', $file or die("Failed to open $file for writing: $!"); foreach (keys %conv_author_name) { print $f "$_=$conv_author_name{$_} <$conv_author_email{$_}>"; print $f " $conv_author_tz{$_}" if ($conv_author_tz{$_}); print $f "\n"; } close ($f); } # Versions of perl before 5.10.0 may not automatically check $TZ each # time localtime is run (most platforms will do so only the first time). # We can work around this by using tzset() to update the internal # variable whenever we change the environment. sub set_timezone { $ENV{TZ} = shift; tzset(); } # convert getopts specs for use by git config my %longmap = ( 'A:' => 'authors-file', 'M:' => 'merge-regex', 'P:' => undef, 'R' => 'track-revisions', 'S:' => 'ignore-paths', ); sub read_repo_config { # Split the string between characters, unless there is a ':' # So "abc:de" becomes ["a", "b", "c:", "d", "e"] my @opts = split(/ *(?!:)/, shift); foreach my $o (@opts) { my $key = $o; $key =~ s/://g; my $arg = 'git config'; $arg .= ' --bool' if ($o !~ /:$/); my $ckey = $key; if (exists $longmap{$o}) { # An uppercase option like -R cannot be # expressed in the configuration, as the # variable names are downcased. $ckey = $longmap{$o}; next if (! defined $ckey); $ckey =~ s/-//g; } chomp(my $tmp = `$arg --get cvsimport.$ckey`); if ($tmp && !($arg =~ /--bool/ && $tmp eq 'false')) { no strict 'refs'; my $opt_name = "opt_" . $key; if (!$$opt_name) { $$opt_name = $tmp; } } } } my $opts = "haivmkuo:d:p:r:C:z:s:M:P:A:S:L:R"; read_repo_config($opts); Getopt::Long::Configure( 'no_ignore_case', 'bundling' ); # turn the Getopt::Std specification in a Getopt::Long one, # with support for multiple -M options GetOptions( map { s/:/=s/; /M/ ? "$_\@" : $_ } split( /(?!:)/, $opts ) ) or usage(); usage if $opt_h; if (@ARGV == 0) { chomp(my $module = `git config --get cvsimport.module`); push(@ARGV, $module) if $? == 0; } @ARGV <= 1 or usage("You can't specify more than one CVS module"); if ($opt_d) { $ENV{"CVSROOT"} = $opt_d; } elsif (-f 'CVS/Root') { open my $f, '<', 'CVS/Root' or die 'Failed to open CVS/Root'; $opt_d = <$f>; chomp $opt_d; close $f; $ENV{"CVSROOT"} = $opt_d; } elsif ($ENV{"CVSROOT"}) { $opt_d = $ENV{"CVSROOT"}; } else { usage("CVSROOT needs to be set"); } $opt_s ||= "-"; $opt_a ||= 0; my $git_tree = $opt_C; $git_tree ||= "."; my $remote; if (defined $opt_r) { $remote = 'refs/remotes/' . $opt_r; $opt_o ||= "master"; } else { $opt_o ||= "origin"; $remote = 'refs/heads'; } 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 $f; } else { usage("CVS module has to be specified"); } our @mergerx = (); if ($opt_m) { @mergerx = ( qr/\b(?:from|of|merge|merging|merged) ([-\w]+)/i ); } if (@opt_M) { push (@mergerx, map { qr/$_/ } @opt_M); } # Remember UTC of our starting time # we'll want to avoid importing commits # that are too recent our $starttime = time(); 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 $self; } sub find_password_entry { my ($cvspass, @cvsroot) = @_; my ($file, $delim) = @$cvspass; my $pass; local ($_); if (open(my $fh, $file)) { # :pserver:cvs@mea.tmt.tele.fi:/cvsroot/zmailer Ah<Z CVSPASSFILE: while (<$fh>) { chomp; s/^\/\d+\s+//; my ($w, $p) = split($delim,$_,2); for my $cvsroot (@cvsroot) { if ($w eq $cvsroot) { $pass = $p; last CVSPASSFILE; } } } close($fh); } return $pass; } sub conn { my $self = shift; my $repo = $self->{'fullrep'}; if ($repo =~ s/^:pserver(?:([^:]*)):(?:(.*?)(?::(.*?))?@)?([^:\/]*)(?::(\d*))?//) { my ($param,$user,$pass,$serv,$port) = ($1,$2,$3,$4,$5); my ($proxyhost,$proxyport); if ($param && ($param =~ m/proxy=([^;]+)/)) { $proxyhost = $1; # Default proxyport, if not specified, is 8080. $proxyport = 8080; if ($ENV{"CVS_PROXY_PORT"}) { $proxyport = $ENV{"CVS_PROXY_PORT"}; } if ($param =~ m/proxyport=([^;]+)/) { $proxyport = $1; } } $repo ||= '/'; # if username is not explicit in CVSROOT, then use current user, as cvs would $user=(getlogin() || $ENV{'LOGNAME'} || $ENV{'USER'} || "anonymous") unless $user; my $rr2 = "-"; unless ($port) { $rr2 = ":pserver:$user\@$serv:$repo"; $port=2401; } my $rr = ":pserver:$user\@$serv:$port$repo"; if ($pass) { $pass = $self->_scramble($pass); } else { my @cvspass = ([$ENV{'HOME'}."/.cvspass", qr/\s/], [$ENV{'HOME'}."/.cvs/cvspass", qr/=/]); my @loc = (); foreach my $cvspass (@cvspass) { my $p = find_password_entry($cvspass, $rr, $rr2); if ($p) { push @loc, $cvspass->[0]; $pass = $p; } } if (1 < @loc) { die("Multiple cvs password files have ". "entries for CVSROOT $opt_d: @loc"); } elsif (!$pass) { $pass = "A"; } } my ($s, $rep); if ($proxyhost) { # Use a HTTP Proxy. Only works for HTTP proxies that # don't require user authentication # # See: http://www.ietf.org/rfc/rfc2817.txt $s = IO::Socket::INET->new(PeerHost => $proxyhost, PeerPort => $proxyport); die "Socket to $proxyhost: $!\n" unless defined $s; $s->write("CONNECT $serv:$port HTTP/1.1\r\nHost: $serv:$port\r\n\r\n") or die "Write to $proxyhost: $!\n"; $s->flush(); $rep = <$s>; # The answer should look like 'HTTP/1.x 2yy ....' if (!($rep =~ m#^HTTP/1\.. 2[0-9][0-9]#)) { die "Proxy connect: $rep\n"; } # Skip up to the empty line of the proxy server output # including the response headers. while ($rep = <$s>) { last if (!defined $rep || $rep eq "\n" || $rep eq "\r\n"); } } else { $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(); $rep = <$s>; if ($rep ne "I LOVE YOU\n") { $rep="<unknown>" 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 Checked-in Created Updated Merged Removed\n"); $self->{'socketo'}->write("valid-requests\n"); $self->{'socketo'}->flush(); my $rep=$self->readline(); die "Failed to read from server" unless defined $rep; chomp($rep); if ($rep !~ s/^Valid-requests\s*//) { $rep="<unknown>" 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; $self->{'socketo'}->write("Argument -P\n") or return undef; # -kk: Linus' version doesn't use it - defaults to off if ($opt_k) { $self->{'socketo'}->write("Argument -kk\n") or return undef; } $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 = $self->_fetchfile($fh, $cnt); } elsif ($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=""; $res += $self->_fetchfile($fh, $cnt); } else { chomp $line; if ($line eq "ok") { # print STDERR "S: ok (".length($res).")\n"; return $res; } elsif ($line =~ s/^E //) { # print STDERR "S: $line\n"; } elsif ($line =~ /^(Remove-entry|Removed) /i) { $line = $self->readline(); # filename $line = $self->readline(); # OK chomp $line; die "Unknown: $line" if $line ne "ok"; return -1; } else { die "Unknown: $line\n"; } } } return undef; } sub file { my ($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) { print STDERR "Server has gone away while fetching $fn $rev, retrying...\n"; truncate $fh, 0; $self->conn(); $self->_file($fn,$rev) or die "No file command send"; $res = $self->_line($fh); die "Retry failed" unless defined $res; } close ($fh); return ($name, $res); } sub _fetchfile { my ($self, $fh, $cnt) = @_; my $res = 0; my $bufsize = 1024 * 1024; while ($cnt) { if ($bufsize > $cnt) { $bufsize = $cnt; } my $buf; my $num = $self->{'socketi'}->read($buf,$bufsize); die "Server: Filesize $cnt: $num: $!\n" if not defined $num or $num<=0; print $fh $buf; $res += $num; $cnt -= $num; } return $res; } sub _scramble { my ($self, $pass) = @_; my $scrambled = "A"; return $scrambled unless $pass; my $pass_len = length($pass); my @pass_arr = split("", $pass); my $i; # from cvs/src/scramble.c my @shifts = ( 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 114,120, 53, 79, 96,109, 72,108, 70, 64, 76, 67,116, 74, 68, 87, 111, 52, 75,119, 49, 34, 82, 81, 95, 65,112, 86,118,110,122,105, 41, 57, 83, 43, 46,102, 40, 89, 38,103, 45, 50, 42,123, 91, 35, 125, 55, 54, 66,124,126, 59, 47, 92, 71,115, 78, 88,107,106, 56, 36,121,117,104,101,100, 69, 73, 99, 63, 94, 93, 39, 37, 61, 48, 58,113, 32, 90, 44, 98, 60, 51, 33, 97, 62, 77, 84, 80, 85,223, 225,216,187,166,229,189,222,188,141,249,148,200,184,136,248,190, 199,170,181,204,138,232,218,183,255,234,220,247,213,203,226,193, 174,172,228,252,217,201,131,230,197,211,145,238,161,179,160,212, 207,221,254,173,202,146,224,151,140,196,205,130,135,133,143,246, 192,159,244,239,185,168,215,144,139,165,180,157,147,186,214,176, 227,231,219,169,175,156,206,198,129,164,150,210,154,177,134,127, 182,128,158,208,162,132,167,209,149,241,153,251,237,236,171,195, 243,233,253,240,194,250,191,155,142,137,245,235,163,242,178,152 ); for ($i = 0; $i < $pass_len; $i++) { $scrambled .= pack("C", $shifts[ord($pass_arr[$i])]); } return $scrambled; } 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; } sub is_sha1 { my $s = shift; return $s =~ /^[a-f0-9]{40}$/; } sub get_headref ($) { my $name = shift; my $r = `git rev-parse --verify '$name' 2>/dev/null`; return undef unless $? == 0; chomp $r; return $r; } my $user_filename_prepend = ''; sub munge_user_filename { my $name = shift; return File::Spec->file_name_is_absolute($name) ? $name : $user_filename_prepend . $name; } -d $git_tree or mkdir($git_tree,0777) or die "Could not create $git_tree: $!"; if ($git_tree ne '.') { $user_filename_prepend = getwd() . '/'; chdir($git_tree); } my $last_branch = ""; my $orig_branch = ""; my %branch_date; my $tip_at_start = undef; 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 %index; # holds filenames of one index per branch unless (-d $git_dir) { system(qw(git init)); die "Cannot init the GIT db at $git_tree: $?\n" if $?; system(qw(git read-tree --empty)); die "Cannot init an empty tree: $?\n" if $?; $last_branch = $opt_o; $orig_branch = ""; } else { open(F, "-|", qw(git symbolic-ref HEAD)) or die "Cannot run git symbolic-ref: $!\n"; chomp ($last_branch = <F>); $last_branch = basename($last_branch); close(F); unless ($last_branch) { warn "Cannot read the last branch name: $! -- assuming 'master'\n"; $last_branch = "master"; } $orig_branch = $last_branch; $tip_at_start = `git rev-parse --verify HEAD`; # Get the last import timestamps my $fmt = '($ref, $author) = (%(refname), %(author));'; my @cmd = ('git', 'for-each-ref', '--perl', "--format=$fmt", $remote); open(H, "-|", @cmd) or die "Cannot run git for-each-ref: $!\n"; while (defined(my $entry = <H>)) { my ($ref, $author); eval($entry) || die "cannot eval refs list: $@"; my ($head) = ($ref =~ m|^$remote/(.*)|); $author =~ /^.*\s(\d+)\s[-+]\d{4}$/; $branch_date{$head} = $1; } close(H); if (!exists $branch_date{$opt_o}) { die "Branch '$opt_o' does not exist.\n". "Either use the correct '-o branch' option,\n". "or import to a new repository.\n"; } } -d $git_dir or die "Could not create git subdir ($git_dir).\n"; # now we read (and possibly save) author-info as well -f "$git_dir/cvs-authors" and read_author_info("$git_dir/cvs-authors"); if ($opt_A) { read_author_info(munge_user_filename($opt_A)); write_author_info("$git_dir/cvs-authors"); } # open .git/cvs-revisions, if requested open my $revision_map, '>>', "$git_dir/cvs-revisions" or die "Can't open $git_dir/cvs-revisions for appending: $!\n" if defined $opt_R; # # run cvsps into a file unless we are getting # it passed as a file via $opt_P # my $cvspsfile; unless ($opt_P) { print "Running cvsps...\n" if $opt_v; my $pid = open(CVSPS,"-|"); my $cvspsfh; 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; unshift @opt, '-q' unless defined $opt_v; unless (defined($opt_p) && $opt_p =~ m/--no-cvs-direct/) { push @opt, '--cvs-direct'; } exec("cvsps","--norc",@opt,"-u","-A",'--root',$opt_d,$cvs_tree); die "Could not start cvsps: $!\n"; } ($cvspsfh, $cvspsfile) = tempfile('gitXXXXXX', SUFFIX => '.cvsps', DIR => File::Spec->tmpdir()); while (<CVSPS>) { print $cvspsfh $_; } close CVSPS; $? == 0 or die "git cvsimport: fatal: cvsps reported error\n"; close $cvspsfh; } else { $cvspsfile = munge_user_filename($opt_P); } open(CVS, "<$cvspsfile") or die $!; ## 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; sub update_index (\@\@) { my $old = shift; my $new = shift; open(my $fh, '|-', qw(git update-index -z --index-info)) or die "unable to open git update-index: $!"; print $fh (map { "0 0000000000000000000000000000000000000000\t$_\0" } @$old), (map { '100' . sprintf('%o', $_->[0]) . " $_->[1]\t$_->[2]\0" } @$new) or die "unable to write to git update-index: $!"; close $fh or die "unable to write to git update-index: $!"; $? and die "git update-index reported error: $?"; } sub write_tree () { open(my $fh, '-|', qw(git write-tree)) or die "unable to open git write-tree: $!"; chomp(my $tree = <$fh>); is_sha1($tree) or die "Cannot get tree id ($tree): $!"; close($fh) or die "Error running git write-tree: $?\n"; print "Tree ID $tree\n" if $opt_v; return $tree; } my ($patchset,$date,$author_name,$author_email,$author_tz,$branch,$ancestor,$tag,$logmsg); my (@old,@new,@skipped,%ignorebranch,@commit_revisions); # commits that cvsps cannot place anywhere... $ignorebranch{'#CVSPS_NO_BRANCH'} = 1; sub commit { if ($branch eq $opt_o && !$index{branch} && !get_headref("$remote/$branch")) { # looks like an initial commit # use the index primed by git init $ENV{GIT_INDEX_FILE} = "$git_dir/index"; $index{$branch} = "$git_dir/index"; } else { # use an index per branch to speed up # imports of projects with many branches unless ($index{$branch}) { $index{$branch} = tmpnam(); $ENV{GIT_INDEX_FILE} = $index{$branch}; if ($ancestor) { system("git", "read-tree", "$remote/$ancestor"); } else { system("git", "read-tree", "$remote/$branch"); } die "read-tree failed: $?\n" if $?; } } $ENV{GIT_INDEX_FILE} = $index{$branch}; update_index(@old, @new); @old = @new = (); my $tree = write_tree(); my $parent = get_headref("$remote/$last_branch"); print "Parent ID " . ($parent ? $parent : "(empty)") . "\n" if $opt_v; my @commit_args; push @commit_args, ("-p", $parent) if $parent; # loose detection of merges # based on the commit msg foreach my $rx (@mergerx) { next unless $logmsg =~ $rx && $1; my $mparent = $1 eq 'HEAD' ? $opt_o : $1; if (my $sha1 = get_headref("$remote/$mparent")) { push @commit_args, '-p', "$remote/$mparent"; print "Merge parent branch: $mparent\n" if $opt_v; } } set_timezone($author_tz); # $date is in the seconds since epoch format my $tz_offset = get_tz_offset($date); my $commit_date = "$date $tz_offset"; set_timezone('UTC'); $ENV{GIT_AUTHOR_NAME} = $author_name; $ENV{GIT_AUTHOR_EMAIL} = $author_email; $ENV{GIT_AUTHOR_DATE} = $commit_date; $ENV{GIT_COMMITTER_NAME} = $author_name; $ENV{GIT_COMMITTER_EMAIL} = $author_email; $ENV{GIT_COMMITTER_DATE} = $commit_date; my $pid = open2(my $commit_read, my $commit_write, 'git', 'commit-tree', $tree, @commit_args); # compatibility with git2cvs substr($logmsg,32767) = "" if length($logmsg) > 32767; $logmsg =~ s/[\s\n]+\z//; if (@skipped) { $logmsg .= "\n\n\nSKIPPED:\n\t"; $logmsg .= join("\n\t", @skipped) . "\n"; @skipped = (); } print($commit_write "$logmsg\n") && close($commit_write) or die "Error writing to git commit-tree: $!\n"; print "Committed patch $patchset ($branch $commit_date)\n" if $opt_v; chomp(my $cid = <$commit_read>); is_sha1($cid) or die "Cannot get commit id ($cid): $!\n"; print "Commit ID $cid\n" if $opt_v; close($commit_read); waitpid($pid,0); die "Error running git commit-tree: $?\n" if $?; system('git' , 'update-ref', "$remote/$branch", $cid) == 0 or die "Cannot write branch $branch for update: $!\n"; if ($revision_map) { print $revision_map "@$_ $cid\n" for @commit_revisions; } @commit_revisions = (); if ($tag) { my ($xtag) = $tag; $xtag =~ s/\s+\*\*.*$//; # Remove stuff like ** INVALID ** and ** FUNKY ** $xtag =~ tr/_/\./ if ( $opt_u ); $xtag =~ s/[\/]/$opt_s/g; # See refs.c for these rules. # Tag cannot contain bad chars. (See bad_ref_char in refs.c.) $xtag =~ s/[ ~\^:\\\*\?\[]//g; # Other bad strings for tags: # (See check_refname_component in refs.c.) 1 while $xtag =~ s/ (?: \.\. # Tag cannot contain '..'. | \@\{ # Tag cannot contain '@{'. | ^ - # Tag cannot begin with '-'. | \.lock $ # Tag cannot end with '.lock'. | ^ \. # Tag cannot begin... | \. $ # ...or end with '.' )//xg; # Tag cannot be empty. if ($xtag eq '') { warn("warning: ignoring tag '$tag'", " with invalid tagname\n"); return; } if (system('git' , 'tag', '-f', $xtag, $cid) != 0) { # We did our best to sanitize the tag, but still failed # for whatever reason. Bail out, and give the user # enough information to understand if/how we should # improve the translation in the future. if ($tag ne $xtag) { print "Translated '$tag' tag to '$xtag'\n"; } die "Cannot create tag $xtag: $!\n"; } print "Created tag '$xtag' on '$branch'\n" if $opt_v; } }; my $commitcount = 1; while (<CVS>) { chomp; if ($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+//) { $author_tz = "UTC"; s/\s+$//; if (/^(.*?)\s+<(.*)>/) { ($author_name, $author_email) = ($1, $2); } elsif ($conv_author_name{$_}) { $author_name = $conv_author_name{$_}; $author_email = $conv_author_email{$_}; $author_tz = $conv_author_tz{$_} if ($conv_author_tz{$_}); } else { $author_name = $author_email = $_; } $state = 4; } elsif ($state == 4 and s/^Branch:\s+//) { s/\s+$//; tr/_/\./ if ( $opt_u ); s/[\/]/$opt_s/g; $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; $state = 11; next; } if (!$opt_a && $starttime - 300 - (defined $opt_z ? $opt_z : 300) <= $date) { # skip if the commit is too recent # given that the cvsps default fuzz is 300s, we give ourselves another # 300s just in case -- this also prevents skipping commits # due to server clock drift print "skip patchset $patchset: $date too recent\n" if $opt_v; $state = 11; next; } if (exists $ignorebranch{$branch}) { print STDERR "Skipping $branch\n"; $state = 11; next; } if ($ancestor) { if ($ancestor eq $branch) { print STDERR "Branch $branch erroneously stems from itself -- changed ancestor to $opt_o\n"; $ancestor = $opt_o; } if (defined get_headref("$remote/$branch")) { print STDERR "Branch $branch already exists!\n"; $state=11; next; } my $id = get_headref("$remote/$ancestor"); if (!$id) { print STDERR "Branch $ancestor does not exist!\n"; $ignorebranch{$branch} = 1; $state=11; next; } system(qw(git update-ref -m cvsimport), "$remote/$branch", $id); if($? != 0) { print STDERR "Could not create branch $branch\n"; $ignorebranch{$branch} = 1; $state=11; next; } } $last_branch = $branch if $branch ne $last_branch; $state = 9; } elsif ($state == 8) { $logmsg .= "$_\n"; } elsif ($state == 9 and /^\s+(.+?):(INITIAL|\d+(?:\.\d+)+)->(\d+(?:\.\d+)+)\s*$/) { # VERSION:1.96->1.96.2.1 my $init = ($2 eq "INITIAL"); my $fn = $1; my $rev = $3; $fn =~ s#^/+##; if ($opt_S && $fn =~ m/$opt_S/) { print "SKIPPING $fn v $rev\n"; push(@skipped, $fn); next; } push @commit_revisions, [$fn, $rev]; print "Fetching $fn v $rev\n" if $opt_v; my ($tmpname, $size) = $cvs->file($fn,$rev); if ($size == -1) { push(@old,$fn); print "Drop $fn\n" if $opt_v; } else { print "".($init ? "New" : "Update")." $fn: $size bytes\n" if $opt_v; my $pid = open(my $F, '-|'); die $! unless defined $pid; if (!$pid) { exec("git", "hash-object", "-w", $tmpname) or die "Cannot create object: $!\n"; } my $sha = <$F>; chomp $sha; close $F; my $mode = pmode($cvs->{'mode'}); push(@new,[$mode, $sha, $fn]); # may be resurrected! } unlink($tmpname); } elsif ($state == 9 and /^\s+(.+?):\d+(?:\.\d+)+->(\d+(?:\.\d+)+)\(DEAD\)\s*$/) { my $fn = $1; my $rev = $2; $fn =~ s#^/+##; push @commit_revisions, [$fn, $rev]; push(@old,$fn); print "Delete $fn\n" if $opt_v; } elsif ($state == 9 and /^\s*$/) { $state = 10; } elsif (($state == 9 or $state == 10) and /^-+$/) { $commitcount++; if ($opt_L && $commitcount > $opt_L) { last; } commit(); if (($commitcount & 1023) == 0) { system(qw(git repack -a -d)); } $state = 1; } elsif ($state == 11 and /^-+$/) { $state = 1; } elsif (/^-+$/) { # end of unknown-line processing $state = 1; } elsif ($state != 11) { # ignore stuff when skipping print STDERR "* UNKNOWN LINE * $_\n"; } } commit() if $branch and $state != 11; unless ($opt_P) { unlink($cvspsfile); } # The heuristic of repacking every 1024 commits can leave a # lot of unpacked data. If there is more than 1MB worth of # not-packed objects, repack once more. my $line = `git count-objects`; if ($line =~ /^(\d+) objects, (\d+) kilobytes$/) { my ($n_objects, $kb) = ($1, $2); 1024 < $kb and system(qw(git repack -a -d)); } foreach my $git_index (values %index) { if ($git_index ne "$git_dir/index") { unlink($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 $opt_v; if ($opt_i) { exit 0; } my $tip_at_end = `git rev-parse --verify HEAD`; if ($tip_at_start ne $tip_at_end) { for ($tip_at_start, $tip_at_end) { chomp; } print "Fetched into the current branch.\n" if $opt_v; system(qw(git read-tree -u -m), $tip_at_start, $tip_at_end); die "Fast-forward update failed: $?\n" if $?; } else { system(qw(git merge -m cvsimport), "$remote/$opt_o"); die "Could not merge $opt_o into the current branch.\n" if $?; } } else { $orig_branch = "master"; print "DONE; creating $orig_branch branch\n" if $opt_v; system("git", "update-ref", "refs/heads/master", "$remote/$opt_o") unless defined get_headref('refs/heads/master'); system("git", "symbolic-ref", "$remote/HEAD", "$remote/$opt_o") if ($opt_r && $opt_o ne 'HEAD'); system('git', 'update-ref', 'HEAD', "$orig_branch"); unless ($opt_i) { system(qw(git checkout -f)); die "checkout failed: $?\n" if $?; } }