blame.c: Properly initialize strbuf after calling, textconv_object()
[git/dscho.git] / git-cvsimport.perl
blob9e03eee4586ca3b7476b56f66e9dcf6ffe3088cf
1 #!/usr/bin/perl -w
3 # This tool is copyright (c) 2005, Matthias Urlichs.
4 # It is released under the Gnu Public License, version 2.
6 # The basic idea is to aggregate CVS check-ins into related changes.
7 # Fortunately, "cvsps" does that for us; all we have to do is to parse
8 # its output.
10 # Checking out the files is done by a single long-running CVS connection
11 # / server process.
13 # The head revision is on branch "origin" by default.
14 # You can change that with the '-o' option.
16 use strict;
17 use warnings;
18 use Getopt::Long;
19 use File::Spec;
20 use File::Temp qw(tempfile tmpnam);
21 use File::Path qw(mkpath);
22 use File::Basename qw(basename dirname);
23 use Time::Local;
24 use IO::Socket;
25 use IO::Pipe;
26 use POSIX qw(strftime dup2 ENOENT);
27 use IPC::Open2;
29 $SIG{'PIPE'}="IGNORE";
30 $ENV{'TZ'}="UTC";
32 our ($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, $opt_R);
33 my (%conv_author_name, %conv_author_email);
35 sub usage(;$) {
36 my $msg = shift;
37 print(STDERR "Error: $msg\n") if $msg;
38 print STDERR <<END;
39 Usage: git cvsimport # fetch/update GIT from CVS
40 [-o branch-for-HEAD] [-h] [-v] [-d CVSROOT] [-A author-conv-file]
41 [-p opts-for-cvsps] [-P file] [-C GIT_repository] [-z fuzz] [-i] [-k]
42 [-u] [-s subst] [-a] [-m] [-M regex] [-S regex] [-L commitlimit]
43 [-r remote] [-R] [CVS_module]
44 END
45 exit(1);
48 sub read_author_info($) {
49 my ($file) = @_;
50 my $user;
51 open my $f, '<', "$file" or die("Failed to open $file: $!\n");
53 while (<$f>) {
54 # Expected format is this:
55 # exon=Andreas Ericsson <ae@op5.se>
56 if (m/^(\S+?)\s*=\s*(.+?)\s*<(.+)>\s*$/) {
57 $user = $1;
58 $conv_author_name{$user} = $2;
59 $conv_author_email{$user} = $3;
61 # However, we also read from CVSROOT/users format
62 # to ease migration.
63 elsif (/^(\w+):(['"]?)(.+?)\2\s*$/) {
64 my $mapped;
65 ($user, $mapped) = ($1, $3);
66 if ($mapped =~ /^\s*(.*?)\s*<(.*)>\s*$/) {
67 $conv_author_name{$user} = $1;
68 $conv_author_email{$user} = $2;
70 elsif ($mapped =~ /^<?(.*)>?$/) {
71 $conv_author_name{$user} = $user;
72 $conv_author_email{$user} = $1;
75 # NEEDSWORK: Maybe warn on unrecognized lines?
77 close ($f);
80 sub write_author_info($) {
81 my ($file) = @_;
82 open my $f, '>', $file or
83 die("Failed to open $file for writing: $!");
85 foreach (keys %conv_author_name) {
86 print $f "$_=$conv_author_name{$_} <$conv_author_email{$_}>\n";
88 close ($f);
91 # convert getopts specs for use by git config
92 sub read_repo_config {
93 # Split the string between characters, unless there is a ':'
94 # So "abc:de" becomes ["a", "b", "c:", "d", "e"]
95 my @opts = split(/ *(?!:)/, shift);
96 foreach my $o (@opts) {
97 my $key = $o;
98 $key =~ s/://g;
99 my $arg = 'git config';
100 $arg .= ' --bool' if ($o !~ /:$/);
102 chomp(my $tmp = `$arg --get cvsimport.$key`);
103 if ($tmp && !($arg =~ /--bool/ && $tmp eq 'false')) {
104 no strict 'refs';
105 my $opt_name = "opt_" . $key;
106 if (!$$opt_name) {
107 $$opt_name = $tmp;
113 my $opts = "haivmkuo:d:p:r:C:z:s:M:P:A:S:L:R";
114 read_repo_config($opts);
115 Getopt::Long::Configure( 'no_ignore_case', 'bundling' );
117 # turn the Getopt::Std specification in a Getopt::Long one,
118 # with support for multiple -M options
119 GetOptions( map { s/:/=s/; /M/ ? "$_\@" : $_ } split( /(?!:)/, $opts ) )
120 or usage();
121 usage if $opt_h;
123 if (@ARGV == 0) {
124 chomp(my $module = `git config --get cvsimport.module`);
125 push(@ARGV, $module) if $? == 0;
127 @ARGV <= 1 or usage("You can't specify more than one CVS module");
129 if ($opt_d) {
130 $ENV{"CVSROOT"} = $opt_d;
131 } elsif (-f 'CVS/Root') {
132 open my $f, '<', 'CVS/Root' or die 'Failed to open CVS/Root';
133 $opt_d = <$f>;
134 chomp $opt_d;
135 close $f;
136 $ENV{"CVSROOT"} = $opt_d;
137 } elsif ($ENV{"CVSROOT"}) {
138 $opt_d = $ENV{"CVSROOT"};
139 } else {
140 usage("CVSROOT needs to be set");
142 $opt_s ||= "-";
143 $opt_a ||= 0;
145 my $git_tree = $opt_C;
146 $git_tree ||= ".";
148 my $remote;
149 if (defined $opt_r) {
150 $remote = 'refs/remotes/' . $opt_r;
151 $opt_o ||= "master";
152 } else {
153 $opt_o ||= "origin";
154 $remote = 'refs/heads';
157 my $cvs_tree;
158 if ($#ARGV == 0) {
159 $cvs_tree = $ARGV[0];
160 } elsif (-f 'CVS/Repository') {
161 open my $f, '<', 'CVS/Repository' or
162 die 'Failed to open CVS/Repository';
163 $cvs_tree = <$f>;
164 chomp $cvs_tree;
165 close $f;
166 } else {
167 usage("CVS module has to be specified");
170 our @mergerx = ();
171 if ($opt_m) {
172 @mergerx = ( qr/\b(?:from|of|merge|merging|merged) ([-\w]+)/i );
174 if (@opt_M) {
175 push (@mergerx, map { qr/$_/ } @opt_M);
178 # Remember UTC of our starting time
179 # we'll want to avoid importing commits
180 # that are too recent
181 our $starttime = time();
183 select(STDERR); $|=1; select(STDOUT);
186 package CVSconn;
187 # Basic CVS dialog.
188 # We're only interested in connecting and downloading, so ...
190 use File::Spec;
191 use File::Temp qw(tempfile);
192 use POSIX qw(strftime dup2);
194 sub new {
195 my ($what,$repo,$subdir) = @_;
196 $what=ref($what) if ref($what);
198 my $self = {};
199 $self->{'buffer'} = "";
200 bless($self,$what);
202 $repo =~ s#/+$##;
203 $self->{'fullrep'} = $repo;
204 $self->conn();
206 $self->{'subdir'} = $subdir;
207 $self->{'lines'} = undef;
209 return $self;
212 sub conn {
213 my $self = shift;
214 my $repo = $self->{'fullrep'};
215 if ($repo =~ s/^:pserver(?:([^:]*)):(?:(.*?)(?::(.*?))?@)?([^:\/]*)(?::(\d*))?//) {
216 my ($param,$user,$pass,$serv,$port) = ($1,$2,$3,$4,$5);
218 my ($proxyhost,$proxyport);
219 if ($param && ($param =~ m/proxy=([^;]+)/)) {
220 $proxyhost = $1;
221 # Default proxyport, if not specified, is 8080.
222 $proxyport = 8080;
223 if ($ENV{"CVS_PROXY_PORT"}) {
224 $proxyport = $ENV{"CVS_PROXY_PORT"};
226 if ($param =~ m/proxyport=([^;]+)/) {
227 $proxyport = $1;
230 $repo ||= '/';
232 # if username is not explicit in CVSROOT, then use current user, as cvs would
233 $user=(getlogin() || $ENV{'LOGNAME'} || $ENV{'USER'} || "anonymous") unless $user;
234 my $rr2 = "-";
235 unless ($port) {
236 $rr2 = ":pserver:$user\@$serv:$repo";
237 $port=2401;
239 my $rr = ":pserver:$user\@$serv:$port$repo";
241 if ($pass) {
242 $pass = $self->_scramble($pass);
243 } else {
244 open(H,$ENV{'HOME'}."/.cvspass") and do {
245 # :pserver:cvs@mea.tmt.tele.fi:/cvsroot/zmailer Ah<Z
246 while (<H>) {
247 chomp;
248 s/^\/\d+\s+//;
249 my ($w,$p) = split(/\s/,$_,2);
250 if ($w eq $rr or $w eq $rr2) {
251 $pass = $p;
252 last;
256 $pass = "A" unless $pass;
259 my ($s, $rep);
260 if ($proxyhost) {
262 # Use a HTTP Proxy. Only works for HTTP proxies that
263 # don't require user authentication
265 # See: http://www.ietf.org/rfc/rfc2817.txt
267 $s = IO::Socket::INET->new(PeerHost => $proxyhost, PeerPort => $proxyport);
268 die "Socket to $proxyhost: $!\n" unless defined $s;
269 $s->write("CONNECT $serv:$port HTTP/1.1\r\nHost: $serv:$port\r\n\r\n")
270 or die "Write to $proxyhost: $!\n";
271 $s->flush();
273 $rep = <$s>;
275 # The answer should look like 'HTTP/1.x 2yy ....'
276 if (!($rep =~ m#^HTTP/1\.. 2[0-9][0-9]#)) {
277 die "Proxy connect: $rep\n";
279 # Skip up to the empty line of the proxy server output
280 # including the response headers.
281 while ($rep = <$s>) {
282 last if (!defined $rep ||
283 $rep eq "\n" ||
284 $rep eq "\r\n");
286 } else {
287 $s = IO::Socket::INET->new(PeerHost => $serv, PeerPort => $port);
288 die "Socket to $serv: $!\n" unless defined $s;
291 $s->write("BEGIN AUTH REQUEST\n$repo\n$user\n$pass\nEND AUTH REQUEST\n")
292 or die "Write to $serv: $!\n";
293 $s->flush();
295 $rep = <$s>;
297 if ($rep ne "I LOVE YOU\n") {
298 $rep="<unknown>" unless $rep;
299 die "AuthReply: $rep\n";
301 $self->{'socketo'} = $s;
302 $self->{'socketi'} = $s;
303 } else { # local or ext: Fork off our own cvs server.
304 my $pr = IO::Pipe->new();
305 my $pw = IO::Pipe->new();
306 my $pid = fork();
307 die "Fork: $!\n" unless defined $pid;
308 my $cvs = 'cvs';
309 $cvs = $ENV{CVS_SERVER} if exists $ENV{CVS_SERVER};
310 my $rsh = 'rsh';
311 $rsh = $ENV{CVS_RSH} if exists $ENV{CVS_RSH};
313 my @cvs = ($cvs, 'server');
314 my ($local, $user, $host);
315 $local = $repo =~ s/:local://;
316 if (!$local) {
317 $repo =~ s/:ext://;
318 $local = !($repo =~ s/^(?:([^\@:]+)\@)?([^:]+)://);
319 ($user, $host) = ($1, $2);
321 if (!$local) {
322 if ($user) {
323 unshift @cvs, $rsh, '-l', $user, $host;
324 } else {
325 unshift @cvs, $rsh, $host;
329 unless ($pid) {
330 $pr->writer();
331 $pw->reader();
332 dup2($pw->fileno(),0);
333 dup2($pr->fileno(),1);
334 $pr->close();
335 $pw->close();
336 exec(@cvs);
338 $pw->writer();
339 $pr->reader();
340 $self->{'socketo'} = $pw;
341 $self->{'socketi'} = $pr;
343 $self->{'socketo'}->write("Root $repo\n");
345 # Trial and error says that this probably is the minimum set
346 $self->{'socketo'}->write("Valid-responses ok error Valid-requests Mode M Mbinary E Checked-in Created Updated Merged Removed\n");
348 $self->{'socketo'}->write("valid-requests\n");
349 $self->{'socketo'}->flush();
351 chomp(my $rep=$self->readline());
352 if ($rep !~ s/^Valid-requests\s*//) {
353 $rep="<unknown>" unless $rep;
354 die "Expected Valid-requests from server, but got: $rep\n";
356 chomp(my $res=$self->readline());
357 die "validReply: $res\n" if $res ne "ok";
359 $self->{'socketo'}->write("UseUnchanged\n") if $rep =~ /\bUseUnchanged\b/;
360 $self->{'repo'} = $repo;
363 sub readline {
364 my ($self) = @_;
365 return $self->{'socketi'}->getline();
368 sub _file {
369 # Request a file with a given revision.
370 # Trial and error says this is a good way to do it. :-/
371 my ($self,$fn,$rev) = @_;
372 $self->{'socketo'}->write("Argument -N\n") or return undef;
373 $self->{'socketo'}->write("Argument -P\n") or return undef;
374 # -kk: Linus' version doesn't use it - defaults to off
375 if ($opt_k) {
376 $self->{'socketo'}->write("Argument -kk\n") or return undef;
378 $self->{'socketo'}->write("Argument -r\n") or return undef;
379 $self->{'socketo'}->write("Argument $rev\n") or return undef;
380 $self->{'socketo'}->write("Argument --\n") or return undef;
381 $self->{'socketo'}->write("Argument $self->{'subdir'}/$fn\n") or return undef;
382 $self->{'socketo'}->write("Directory .\n") or return undef;
383 $self->{'socketo'}->write("$self->{'repo'}\n") or return undef;
384 # $self->{'socketo'}->write("Sticky T1.0\n") or return undef;
385 $self->{'socketo'}->write("co\n") or return undef;
386 $self->{'socketo'}->flush() or return undef;
387 $self->{'lines'} = 0;
388 return 1;
390 sub _line {
391 # Read a line from the server.
392 # ... except that 'line' may be an entire file. ;-)
393 my ($self, $fh) = @_;
394 die "Not in lines" unless defined $self->{'lines'};
396 my $line;
397 my $res=0;
398 while (defined($line = $self->readline())) {
399 # M U gnupg-cvs-rep/AUTHORS
400 # Updated gnupg-cvs-rep/
401 # /daten/src/rsync/gnupg-cvs-rep/AUTHORS
402 # /AUTHORS/1.1///T1.1
403 # u=rw,g=rw,o=rw
405 # ok
407 if ($line =~ s/^(?:Created|Updated) //) {
408 $line = $self->readline(); # path
409 $line = $self->readline(); # Entries line
410 my $mode = $self->readline(); chomp $mode;
411 $self->{'mode'} = $mode;
412 defined (my $cnt = $self->readline())
413 or die "EOF from server after 'Changed'\n";
414 chomp $cnt;
415 die "Duh: Filesize $cnt" if $cnt !~ /^\d+$/;
416 $line="";
417 $res = $self->_fetchfile($fh, $cnt);
418 } elsif ($line =~ s/^ //) {
419 print $fh $line;
420 $res += length($line);
421 } elsif ($line =~ /^M\b/) {
422 # output, do nothing
423 } elsif ($line =~ /^Mbinary\b/) {
424 my $cnt;
425 die "EOF from server after 'Mbinary'" unless defined ($cnt = $self->readline());
426 chomp $cnt;
427 die "Duh: Mbinary $cnt" if $cnt !~ /^\d+$/ or $cnt<1;
428 $line="";
429 $res += $self->_fetchfile($fh, $cnt);
430 } else {
431 chomp $line;
432 if ($line eq "ok") {
433 # print STDERR "S: ok (".length($res).")\n";
434 return $res;
435 } elsif ($line =~ s/^E //) {
436 # print STDERR "S: $line\n";
437 } elsif ($line =~ /^(Remove-entry|Removed) /i) {
438 $line = $self->readline(); # filename
439 $line = $self->readline(); # OK
440 chomp $line;
441 die "Unknown: $line" if $line ne "ok";
442 return -1;
443 } else {
444 die "Unknown: $line\n";
448 return undef;
450 sub file {
451 my ($self,$fn,$rev) = @_;
452 my $res;
454 my ($fh, $name) = tempfile('gitcvs.XXXXXX',
455 DIR => File::Spec->tmpdir(), UNLINK => 1);
457 $self->_file($fn,$rev) and $res = $self->_line($fh);
459 if (!defined $res) {
460 print STDERR "Server has gone away while fetching $fn $rev, retrying...\n";
461 truncate $fh, 0;
462 $self->conn();
463 $self->_file($fn,$rev) or die "No file command send";
464 $res = $self->_line($fh);
465 die "Retry failed" unless defined $res;
467 close ($fh);
469 return ($name, $res);
471 sub _fetchfile {
472 my ($self, $fh, $cnt) = @_;
473 my $res = 0;
474 my $bufsize = 1024 * 1024;
475 while ($cnt) {
476 if ($bufsize > $cnt) {
477 $bufsize = $cnt;
479 my $buf;
480 my $num = $self->{'socketi'}->read($buf,$bufsize);
481 die "Server: Filesize $cnt: $num: $!\n" if not defined $num or $num<=0;
482 print $fh $buf;
483 $res += $num;
484 $cnt -= $num;
486 return $res;
489 sub _scramble {
490 my ($self, $pass) = @_;
491 my $scrambled = "A";
493 return $scrambled unless $pass;
495 my $pass_len = length($pass);
496 my @pass_arr = split("", $pass);
497 my $i;
499 # from cvs/src/scramble.c
500 my @shifts = (
501 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
502 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31,
503 114,120, 53, 79, 96,109, 72,108, 70, 64, 76, 67,116, 74, 68, 87,
504 111, 52, 75,119, 49, 34, 82, 81, 95, 65,112, 86,118,110,122,105,
505 41, 57, 83, 43, 46,102, 40, 89, 38,103, 45, 50, 42,123, 91, 35,
506 125, 55, 54, 66,124,126, 59, 47, 92, 71,115, 78, 88,107,106, 56,
507 36,121,117,104,101,100, 69, 73, 99, 63, 94, 93, 39, 37, 61, 48,
508 58,113, 32, 90, 44, 98, 60, 51, 33, 97, 62, 77, 84, 80, 85,223,
509 225,216,187,166,229,189,222,188,141,249,148,200,184,136,248,190,
510 199,170,181,204,138,232,218,183,255,234,220,247,213,203,226,193,
511 174,172,228,252,217,201,131,230,197,211,145,238,161,179,160,212,
512 207,221,254,173,202,146,224,151,140,196,205,130,135,133,143,246,
513 192,159,244,239,185,168,215,144,139,165,180,157,147,186,214,176,
514 227,231,219,169,175,156,206,198,129,164,150,210,154,177,134,127,
515 182,128,158,208,162,132,167,209,149,241,153,251,237,236,171,195,
516 243,233,253,240,194,250,191,155,142,137,245,235,163,242,178,152
519 for ($i = 0; $i < $pass_len; $i++) {
520 $scrambled .= pack("C", $shifts[ord($pass_arr[$i])]);
523 return $scrambled;
526 package main;
528 my $cvs = CVSconn->new($opt_d, $cvs_tree);
531 sub pdate($) {
532 my ($d) = @_;
533 m#(\d{2,4})/(\d\d)/(\d\d)\s(\d\d):(\d\d)(?::(\d\d))?#
534 or die "Unparseable date: $d\n";
535 my $y=$1; $y-=1900 if $y>1900;
536 return timegm($6||0,$5,$4,$3,$2-1,$y);
539 sub pmode($) {
540 my ($mode) = @_;
541 my $m = 0;
542 my $mm = 0;
543 my $um = 0;
544 for my $x(split(//,$mode)) {
545 if ($x eq ",") {
546 $m |= $mm&$um;
547 $mm = 0;
548 $um = 0;
549 } elsif ($x eq "u") { $um |= 0700;
550 } elsif ($x eq "g") { $um |= 0070;
551 } elsif ($x eq "o") { $um |= 0007;
552 } elsif ($x eq "r") { $mm |= 0444;
553 } elsif ($x eq "w") { $mm |= 0222;
554 } elsif ($x eq "x") { $mm |= 0111;
555 } elsif ($x eq "=") { # do nothing
556 } else { die "Unknown mode: $mode\n";
559 $m |= $mm&$um;
560 return $m;
563 sub getwd() {
564 my $pwd = `pwd`;
565 chomp $pwd;
566 return $pwd;
569 sub is_sha1 {
570 my $s = shift;
571 return $s =~ /^[a-f0-9]{40}$/;
574 sub get_headref ($) {
575 my $name = shift;
576 my $r = `git rev-parse --verify '$name' 2>/dev/null`;
577 return undef unless $? == 0;
578 chomp $r;
579 return $r;
582 my $user_filename_prepend = '';
583 sub munge_user_filename {
584 my $name = shift;
585 return File::Spec->file_name_is_absolute($name) ?
586 $name :
587 $user_filename_prepend . $name;
590 -d $git_tree
591 or mkdir($git_tree,0777)
592 or die "Could not create $git_tree: $!";
593 if ($git_tree ne '.') {
594 $user_filename_prepend = getwd() . '/';
595 chdir($git_tree);
598 my $last_branch = "";
599 my $orig_branch = "";
600 my %branch_date;
601 my $tip_at_start = undef;
603 my $git_dir = $ENV{"GIT_DIR"} || ".git";
604 $git_dir = getwd()."/".$git_dir unless $git_dir =~ m#^/#;
605 $ENV{"GIT_DIR"} = $git_dir;
606 my $orig_git_index;
607 $orig_git_index = $ENV{GIT_INDEX_FILE} if exists $ENV{GIT_INDEX_FILE};
609 my %index; # holds filenames of one index per branch
611 unless (-d $git_dir) {
612 system(qw(git init));
613 die "Cannot init the GIT db at $git_tree: $?\n" if $?;
614 system(qw(git read-tree));
615 die "Cannot init an empty tree: $?\n" if $?;
617 $last_branch = $opt_o;
618 $orig_branch = "";
619 } else {
620 open(F, "-|", qw(git symbolic-ref HEAD)) or
621 die "Cannot run git symbolic-ref: $!\n";
622 chomp ($last_branch = <F>);
623 $last_branch = basename($last_branch);
624 close(F);
625 unless ($last_branch) {
626 warn "Cannot read the last branch name: $! -- assuming 'master'\n";
627 $last_branch = "master";
629 $orig_branch = $last_branch;
630 $tip_at_start = `git rev-parse --verify HEAD`;
632 # Get the last import timestamps
633 my $fmt = '($ref, $author) = (%(refname), %(author));';
634 my @cmd = ('git', 'for-each-ref', '--perl', "--format=$fmt", $remote);
635 open(H, "-|", @cmd) or die "Cannot run git for-each-ref: $!\n";
636 while (defined(my $entry = <H>)) {
637 my ($ref, $author);
638 eval($entry) || die "cannot eval refs list: $@";
639 my ($head) = ($ref =~ m|^$remote/(.*)|);
640 $author =~ /^.*\s(\d+)\s[-+]\d{4}$/;
641 $branch_date{$head} = $1;
643 close(H);
644 if (!exists $branch_date{$opt_o}) {
645 die "Branch '$opt_o' does not exist.\n".
646 "Either use the correct '-o branch' option,\n".
647 "or import to a new repository.\n";
651 -d $git_dir
652 or die "Could not create git subdir ($git_dir).\n";
654 # now we read (and possibly save) author-info as well
655 -f "$git_dir/cvs-authors" and
656 read_author_info("$git_dir/cvs-authors");
657 if ($opt_A) {
658 read_author_info(munge_user_filename($opt_A));
659 write_author_info("$git_dir/cvs-authors");
662 # open .git/cvs-revisions, if requested
663 open my $revision_map, '>>', "$git_dir/cvs-revisions"
664 or die "Can't open $git_dir/cvs-revisions for appending: $!\n"
665 if defined $opt_R;
669 # run cvsps into a file unless we are getting
670 # it passed as a file via $opt_P
672 my $cvspsfile;
673 unless ($opt_P) {
674 print "Running cvsps...\n" if $opt_v;
675 my $pid = open(CVSPS,"-|");
676 my $cvspsfh;
677 die "Cannot fork: $!\n" unless defined $pid;
678 unless ($pid) {
679 my @opt;
680 @opt = split(/,/,$opt_p) if defined $opt_p;
681 unshift @opt, '-z', $opt_z if defined $opt_z;
682 unshift @opt, '-q' unless defined $opt_v;
683 unless (defined($opt_p) && $opt_p =~ m/--no-cvs-direct/) {
684 push @opt, '--cvs-direct';
686 exec("cvsps","--norc",@opt,"-u","-A",'--root',$opt_d,$cvs_tree);
687 die "Could not start cvsps: $!\n";
689 ($cvspsfh, $cvspsfile) = tempfile('gitXXXXXX', SUFFIX => '.cvsps',
690 DIR => File::Spec->tmpdir());
691 while (<CVSPS>) {
692 print $cvspsfh $_;
694 close CVSPS;
695 $? == 0 or die "git cvsimport: fatal: cvsps reported error\n";
696 close $cvspsfh;
697 } else {
698 $cvspsfile = munge_user_filename($opt_P);
701 open(CVS, "<$cvspsfile") or die $!;
703 ## cvsps output:
704 #---------------------
705 #PatchSet 314
706 #Date: 1999/09/18 13:03:59
707 #Author: wkoch
708 #Branch: STABLE-BRANCH-1-0
709 #Ancestor branch: HEAD
710 #Tag: (none)
711 #Log:
712 # See ChangeLog: Sat Sep 18 13:03:28 CEST 1999 Werner Koch
713 #Members:
714 # README:1.57->1.57.2.1
715 # VERSION:1.96->1.96.2.1
717 #---------------------
719 my $state = 0;
721 sub update_index (\@\@) {
722 my $old = shift;
723 my $new = shift;
724 open(my $fh, '|-', qw(git update-index -z --index-info))
725 or die "unable to open git update-index: $!";
726 print $fh
727 (map { "0 0000000000000000000000000000000000000000\t$_\0" }
728 @$old),
729 (map { '100' . sprintf('%o', $_->[0]) . " $_->[1]\t$_->[2]\0" }
730 @$new)
731 or die "unable to write to git update-index: $!";
732 close $fh
733 or die "unable to write to git update-index: $!";
734 $? and die "git update-index reported error: $?";
737 sub write_tree () {
738 open(my $fh, '-|', qw(git write-tree))
739 or die "unable to open git write-tree: $!";
740 chomp(my $tree = <$fh>);
741 is_sha1($tree)
742 or die "Cannot get tree id ($tree): $!";
743 close($fh)
744 or die "Error running git write-tree: $?\n";
745 print "Tree ID $tree\n" if $opt_v;
746 return $tree;
749 my ($patchset,$date,$author_name,$author_email,$branch,$ancestor,$tag,$logmsg);
750 my (@old,@new,@skipped,%ignorebranch,@commit_revisions);
752 # commits that cvsps cannot place anywhere...
753 $ignorebranch{'#CVSPS_NO_BRANCH'} = 1;
755 sub commit {
756 if ($branch eq $opt_o && !$index{branch} &&
757 !get_headref("$remote/$branch")) {
758 # looks like an initial commit
759 # use the index primed by git init
760 $ENV{GIT_INDEX_FILE} = "$git_dir/index";
761 $index{$branch} = "$git_dir/index";
762 } else {
763 # use an index per branch to speed up
764 # imports of projects with many branches
765 unless ($index{$branch}) {
766 $index{$branch} = tmpnam();
767 $ENV{GIT_INDEX_FILE} = $index{$branch};
768 if ($ancestor) {
769 system("git", "read-tree", "$remote/$ancestor");
770 } else {
771 system("git", "read-tree", "$remote/$branch");
773 die "read-tree failed: $?\n" if $?;
776 $ENV{GIT_INDEX_FILE} = $index{$branch};
778 update_index(@old, @new);
779 @old = @new = ();
780 my $tree = write_tree();
781 my $parent = get_headref("$remote/$last_branch");
782 print "Parent ID " . ($parent ? $parent : "(empty)") . "\n" if $opt_v;
784 my @commit_args;
785 push @commit_args, ("-p", $parent) if $parent;
787 # loose detection of merges
788 # based on the commit msg
789 foreach my $rx (@mergerx) {
790 next unless $logmsg =~ $rx && $1;
791 my $mparent = $1 eq 'HEAD' ? $opt_o : $1;
792 if (my $sha1 = get_headref("$remote/$mparent")) {
793 push @commit_args, '-p', "$remote/$mparent";
794 print "Merge parent branch: $mparent\n" if $opt_v;
798 my $commit_date = strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date));
799 $ENV{GIT_AUTHOR_NAME} = $author_name;
800 $ENV{GIT_AUTHOR_EMAIL} = $author_email;
801 $ENV{GIT_AUTHOR_DATE} = $commit_date;
802 $ENV{GIT_COMMITTER_NAME} = $author_name;
803 $ENV{GIT_COMMITTER_EMAIL} = $author_email;
804 $ENV{GIT_COMMITTER_DATE} = $commit_date;
805 my $pid = open2(my $commit_read, my $commit_write,
806 'git', 'commit-tree', $tree, @commit_args);
808 # compatibility with git2cvs
809 substr($logmsg,32767) = "" if length($logmsg) > 32767;
810 $logmsg =~ s/[\s\n]+\z//;
812 if (@skipped) {
813 $logmsg .= "\n\n\nSKIPPED:\n\t";
814 $logmsg .= join("\n\t", @skipped) . "\n";
815 @skipped = ();
818 print($commit_write "$logmsg\n") && close($commit_write)
819 or die "Error writing to git commit-tree: $!\n";
821 print "Committed patch $patchset ($branch $commit_date)\n" if $opt_v;
822 chomp(my $cid = <$commit_read>);
823 is_sha1($cid) or die "Cannot get commit id ($cid): $!\n";
824 print "Commit ID $cid\n" if $opt_v;
825 close($commit_read);
827 waitpid($pid,0);
828 die "Error running git commit-tree: $?\n" if $?;
830 system('git' , 'update-ref', "$remote/$branch", $cid) == 0
831 or die "Cannot write branch $branch for update: $!\n";
833 if ($revision_map) {
834 print $revision_map "@$_ $cid\n" for @commit_revisions;
836 @commit_revisions = ();
838 if ($tag) {
839 my ($xtag) = $tag;
840 $xtag =~ s/\s+\*\*.*$//; # Remove stuff like ** INVALID ** and ** FUNKY **
841 $xtag =~ tr/_/\./ if ( $opt_u );
842 $xtag =~ s/[\/]/$opt_s/g;
843 $xtag =~ s/\[//g;
845 system('git' , 'tag', '-f', $xtag, $cid) == 0
846 or die "Cannot create tag $xtag: $!\n";
848 print "Created tag '$xtag' on '$branch'\n" if $opt_v;
852 my $commitcount = 1;
853 while (<CVS>) {
854 chomp;
855 if ($state == 0 and /^-+$/) {
856 $state = 1;
857 } elsif ($state == 0) {
858 $state = 1;
859 redo;
860 } elsif (($state==0 or $state==1) and s/^PatchSet\s+//) {
861 $patchset = 0+$_;
862 $state=2;
863 } elsif ($state == 2 and s/^Date:\s+//) {
864 $date = pdate($_);
865 unless ($date) {
866 print STDERR "Could not parse date: $_\n";
867 $state=0;
868 next;
870 $state=3;
871 } elsif ($state == 3 and s/^Author:\s+//) {
872 s/\s+$//;
873 if (/^(.*?)\s+<(.*)>/) {
874 ($author_name, $author_email) = ($1, $2);
875 } elsif ($conv_author_name{$_}) {
876 $author_name = $conv_author_name{$_};
877 $author_email = $conv_author_email{$_};
878 } else {
879 $author_name = $author_email = $_;
881 $state = 4;
882 } elsif ($state == 4 and s/^Branch:\s+//) {
883 s/\s+$//;
884 tr/_/\./ if ( $opt_u );
885 s/[\/]/$opt_s/g;
886 $branch = $_;
887 $state = 5;
888 } elsif ($state == 5 and s/^Ancestor branch:\s+//) {
889 s/\s+$//;
890 $ancestor = $_;
891 $ancestor = $opt_o if $ancestor eq "HEAD";
892 $state = 6;
893 } elsif ($state == 5) {
894 $ancestor = undef;
895 $state = 6;
896 redo;
897 } elsif ($state == 6 and s/^Tag:\s+//) {
898 s/\s+$//;
899 if ($_ eq "(none)") {
900 $tag = undef;
901 } else {
902 $tag = $_;
904 $state = 7;
905 } elsif ($state == 7 and /^Log:/) {
906 $logmsg = "";
907 $state = 8;
908 } elsif ($state == 8 and /^Members:/) {
909 $branch = $opt_o if $branch eq "HEAD";
910 if (defined $branch_date{$branch} and $branch_date{$branch} >= $date) {
911 # skip
912 print "skip patchset $patchset: $date before $branch_date{$branch}\n" if $opt_v;
913 $state = 11;
914 next;
916 if (!$opt_a && $starttime - 300 - (defined $opt_z ? $opt_z : 300) <= $date) {
917 # skip if the commit is too recent
918 # given that the cvsps default fuzz is 300s, we give ourselves another
919 # 300s just in case -- this also prevents skipping commits
920 # due to server clock drift
921 print "skip patchset $patchset: $date too recent\n" if $opt_v;
922 $state = 11;
923 next;
925 if (exists $ignorebranch{$branch}) {
926 print STDERR "Skipping $branch\n";
927 $state = 11;
928 next;
930 if ($ancestor) {
931 if ($ancestor eq $branch) {
932 print STDERR "Branch $branch erroneously stems from itself -- changed ancestor to $opt_o\n";
933 $ancestor = $opt_o;
935 if (defined get_headref("$remote/$branch")) {
936 print STDERR "Branch $branch already exists!\n";
937 $state=11;
938 next;
940 my $id = get_headref("$remote/$ancestor");
941 if (!$id) {
942 print STDERR "Branch $ancestor does not exist!\n";
943 $ignorebranch{$branch} = 1;
944 $state=11;
945 next;
948 system(qw(git update-ref -m cvsimport),
949 "$remote/$branch", $id);
950 if($? != 0) {
951 print STDERR "Could not create branch $branch\n";
952 $ignorebranch{$branch} = 1;
953 $state=11;
954 next;
957 $last_branch = $branch if $branch ne $last_branch;
958 $state = 9;
959 } elsif ($state == 8) {
960 $logmsg .= "$_\n";
961 } elsif ($state == 9 and /^\s+(.+?):(INITIAL|\d+(?:\.\d+)+)->(\d+(?:\.\d+)+)\s*$/) {
962 # VERSION:1.96->1.96.2.1
963 my $init = ($2 eq "INITIAL");
964 my $fn = $1;
965 my $rev = $3;
966 $fn =~ s#^/+##;
967 if ($opt_S && $fn =~ m/$opt_S/) {
968 print "SKIPPING $fn v $rev\n";
969 push(@skipped, $fn);
970 next;
972 push @commit_revisions, [$fn, $rev];
973 print "Fetching $fn v $rev\n" if $opt_v;
974 my ($tmpname, $size) = $cvs->file($fn,$rev);
975 if ($size == -1) {
976 push(@old,$fn);
977 print "Drop $fn\n" if $opt_v;
978 } else {
979 print "".($init ? "New" : "Update")." $fn: $size bytes\n" if $opt_v;
980 my $pid = open(my $F, '-|');
981 die $! unless defined $pid;
982 if (!$pid) {
983 exec("git", "hash-object", "-w", $tmpname)
984 or die "Cannot create object: $!\n";
986 my $sha = <$F>;
987 chomp $sha;
988 close $F;
989 my $mode = pmode($cvs->{'mode'});
990 push(@new,[$mode, $sha, $fn]); # may be resurrected!
992 unlink($tmpname);
993 } elsif ($state == 9 and /^\s+(.+?):\d+(?:\.\d+)+->(\d+(?:\.\d+)+)\(DEAD\)\s*$/) {
994 my $fn = $1;
995 my $rev = $2;
996 $fn =~ s#^/+##;
997 push @commit_revisions, [$fn, $rev];
998 push(@old,$fn);
999 print "Delete $fn\n" if $opt_v;
1000 } elsif ($state == 9 and /^\s*$/) {
1001 $state = 10;
1002 } elsif (($state == 9 or $state == 10) and /^-+$/) {
1003 $commitcount++;
1004 if ($opt_L && $commitcount > $opt_L) {
1005 last;
1007 commit();
1008 if (($commitcount & 1023) == 0) {
1009 system(qw(git repack -a -d));
1011 $state = 1;
1012 } elsif ($state == 11 and /^-+$/) {
1013 $state = 1;
1014 } elsif (/^-+$/) { # end of unknown-line processing
1015 $state = 1;
1016 } elsif ($state != 11) { # ignore stuff when skipping
1017 print STDERR "* UNKNOWN LINE * $_\n";
1020 commit() if $branch and $state != 11;
1022 unless ($opt_P) {
1023 unlink($cvspsfile);
1026 # The heuristic of repacking every 1024 commits can leave a
1027 # lot of unpacked data. If there is more than 1MB worth of
1028 # not-packed objects, repack once more.
1029 my $line = `git count-objects`;
1030 if ($line =~ /^(\d+) objects, (\d+) kilobytes$/) {
1031 my ($n_objects, $kb) = ($1, $2);
1032 1024 < $kb
1033 and system(qw(git repack -a -d));
1036 foreach my $git_index (values %index) {
1037 if ($git_index ne "$git_dir/index") {
1038 unlink($git_index);
1042 if (defined $orig_git_index) {
1043 $ENV{GIT_INDEX_FILE} = $orig_git_index;
1044 } else {
1045 delete $ENV{GIT_INDEX_FILE};
1048 # Now switch back to the branch we were in before all of this happened
1049 if ($orig_branch) {
1050 print "DONE.\n" if $opt_v;
1051 if ($opt_i) {
1052 exit 0;
1054 my $tip_at_end = `git rev-parse --verify HEAD`;
1055 if ($tip_at_start ne $tip_at_end) {
1056 for ($tip_at_start, $tip_at_end) { chomp; }
1057 print "Fetched into the current branch.\n" if $opt_v;
1058 system(qw(git read-tree -u -m),
1059 $tip_at_start, $tip_at_end);
1060 die "Fast-forward update failed: $?\n" if $?;
1062 else {
1063 system(qw(git merge cvsimport HEAD), "$remote/$opt_o");
1064 die "Could not merge $opt_o into the current branch.\n" if $?;
1066 } else {
1067 $orig_branch = "master";
1068 print "DONE; creating $orig_branch branch\n" if $opt_v;
1069 system("git", "update-ref", "refs/heads/master", "$remote/$opt_o")
1070 unless defined get_headref('refs/heads/master');
1071 system("git", "symbolic-ref", "$remote/HEAD", "$remote/$opt_o")
1072 if ($opt_r && $opt_o ne 'HEAD');
1073 system('git', 'update-ref', 'HEAD', "$orig_branch");
1074 unless ($opt_i) {
1075 system(qw(git checkout -f));
1076 die "checkout failed: $?\n" if $?;