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authorMatthias Urlichs <smurf@kiste.(none)>2005-06-28 14:48:40 (GMT)
committerMatthias Urlichs <smurf@kiste.(none)>2005-06-28 14:48:40 (GMT)
commita57a9493df00b6fbb3699fda8ceedf4ac0783ac6 (patch)
tree0870d59faec2cc3b2cb7b7a719deba0c9cab2354 /git-cvsimport-script
parent635f67f9437b104be852cadb645006f4e858421f (diff)
downloadgit-a57a9493df00b6fbb3699fda8ceedf4ac0783ac6.zip
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Added Perl git-cvsimport-script
Diffstat (limited to 'git-cvsimport-script')
-rwxr-xr-xgit-cvsimport-script604
1 files changed, 575 insertions, 29 deletions
diff --git a/git-cvsimport-script b/git-cvsimport-script
index 0ba6746..e480a50 100755
--- a/git-cvsimport-script
+++ b/git-cvsimport-script
@@ -1,38 +1,584 @@
-#!/bin/sh
+#!/usr/bin/perl -w
-usage () {
- echo "Usage: git cvsimport [-v] [-z fuzz] <cvsroot> <module>"
- exit 1
+# This tool is copyright (c) 2005, Matthias Urlichs.
+# It is released under the Gnu Public License, version 2.
+#
+# The basic idea is to aggregate CVS check-ins into related changes.
+# Fortunately, "cvsps" does that for us; all we have to do is to parse
+# its output.
+#
+# Checking out the files is done by a single long-running CVS connection
+# / server process.
+#
+# The head revision is on branch "origin" by default.
+# You can change that with the '-o' option.
+
+use strict;
+use warnings;
+use Getopt::Std;
+use File::Path qw(mkpath);
+use File::Basename qw(basename dirname);
+use Time::Local;
+use POSIX qw(strftime);
+
+$SIG{'PIPE'}="IGNORE";
+$ENV{'TZ'}="UTC";
+
+our($opt_h,$opt_o,$opt_v);
+
+sub usage() {
+ print STDERR <<END;
+Usage: ${\basename $0} -- fetch/update GIT from CVS
+ [ -h (help) ]
+ [ -v (verbose) ] [ -o name-of-HEAD ]
+ CVS_archive GIT_dest
+END
+ exit(1);
+}
+
+getopts("hqvo:") or usage();
+usage if $opt_h;
+
+@ARGV == 2 or usage();
+$opt_o ||= "origin";
+
+my($cvs_tree, $git_tree) = @ARGV;
+
+select(STDERR); $|=1; select(STDOUT);
+
+
+package CVSconn;
+# Basic CVS dialog.
+# We're only interested in downloading files.
+
+sub new {
+ my($what,$repo,$subdir) = @_;
+ $what=ref($what) if ref($what);
+
+ my $self = {};
+ $self->{'buffer'} = "";
+ bless($self,$what);
+
+ $repo =~ s#/+$##;
+ $self->{'fullrep'} = $repo;
+ $self->conn();
+
+ $self->{'subdir'} = $subdir;
+ $self->{'lines'} = undef;
+
+ return $self;
+}
+
+sub conn {
+ my $self = shift;
+ my $repo = $self->{'fullrep'};
+ if($repo =~ s/^:pserver:(?:(.*?)(?::(.*?))?@)?([^:\/]*)(?::(\d*))?//) {
+ my($user,$pass,$serv,$port) = ($1,$2,$3,$4);
+ $user="anonymous" unless defined $user;
+ my $rr2;
+ unless($port) {
+ $rr2 = ":pserver:$user\@$serv:$repo";
+ $port=2401;
+ }
+ my $rr = ":pserver:$user\@$serv:$port$repo";
+
+ unless($pass) {
+ open(H,$ENV{'HOME'}."/.cvspass") and do {
+ # :pserver:cvs@mea.tmt.tele.fi:/cvsroot/zmailer Ah<Z
+ while(<H>) {
+ chomp;
+ s/^\/\d+\s+//;
+ my ($w,$p) = split(/\s/,$_,2);
+ if($w eq $rr or $w eq $rr2) {
+ $pass = $p;
+ last;
+ }
+ }
+ };
+ }
+ $pass="A" unless $pass;
+
+ use IO::Socket;
+ my $s = IO::Socket::INET->new(PeerHost => $serv, PeerPort => $port);
+ die "Socket to $serv: $!\n" unless defined $s;
+ $s->write("BEGIN AUTH REQUEST\n$repo\n$user\n$pass\nEND AUTH REQUEST\n")
+ or die "Write to $serv: $!\n";
+ $s->flush();
+
+ my $rep = <$s>;
+
+ if($rep ne "I LOVE YOU\n") {
+ $rep="<unknown>" unless $rep;
+ die "AuthReply: $rep\n";
+ }
+ $self->{'socketo'} = $s;
+ $self->{'socketi'} = $s;
+ } else { # local: Fork off our own cvs server.
+ use IO::Pipe;
+ my $pr = IO::Pipe->new();
+ my $pw = IO::Pipe->new();
+ my $pid = fork();
+ die "Fork: $!\n" unless defined $pid;
+ unless($pid) {
+ $pr->writer();
+ $pw->reader();
+ use POSIX qw(dup2);
+ dup2($pw->fileno(),0);
+ dup2($pr->fileno(),1);
+ $pr->close();
+ $pw->close();
+ exec("cvs","server");
+ }
+ $pw->writer();
+ $pr->reader();
+ $self->{'socketo'} = $pw;
+ $self->{'socketi'} = $pr;
+ }
+ $self->{'socketo'}->write("Root $repo\n");
+
+ # Trial and error says that this probably is the minimum set
+ $self->{'socketo'}->write("Valid-responses ok error Valid-requests Mode M Mbinary E F Checked-in Created Updated Merged Removed\n");
+
+ $self->{'socketo'}->write("valid-requests\n");
+ $self->{'socketo'}->flush();
+
+ chomp(my $rep=$self->readline());
+ if($rep !~ s/^Valid-requests\s*//) {
+ $rep="<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;
+ # $self->{'socketo'}->write("Argument -ko\n") or return undef;
+ # -ko: Linus' version doesn't use it
+ $self->{'socketo'}->write("Argument -r\n") or return undef;
+ $self->{'socketo'}->write("Argument $rev\n") or return undef;
+ $self->{'socketo'}->write("Argument --\n") or return undef;
+ $self->{'socketo'}->write("Argument $self->{'subdir'}/$fn\n") or return undef;
+ $self->{'socketo'}->write("Directory .\n") or return undef;
+ $self->{'socketo'}->write("$self->{'repo'}\n") or return undef;
+ $self->{'socketo'}->write("Sticky T1.1\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) = @_;
+ die "Not in lines" unless defined $self->{'lines'};
+
+ my $line;
+ my $res="";
+ while(defined($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="";
+ $res="";
+ while($cnt) {
+ my $buf;
+ my $num = $self->{'socketi'}->read($buf,$cnt);
+ die "Server: Filesize $cnt: $num: $!\n" if not defined $num or $num<=0;
+ $res .= $buf;
+ $cnt -= $num;
+ }
+ } elsif($line =~ s/^ //) {
+ $res .= $line;
+ } elsif($line =~ /^M\b/) {
+ # output, do nothing
+ } elsif($line =~ /^Mbinary\b/) {
+ my $cnt;
+ die "EOF from server after 'Mbinary'" unless defined ($cnt = $self->readline());
+ chomp $cnt;
+ die "Duh: Mbinary $cnt" if $cnt !~ /^\d+$/ or $cnt<1;
+ $line="";
+ while($cnt) {
+ my $buf;
+ my $num = $self->{'socketi'}->read($buf,$cnt);
+ die "S: Mbinary $cnt: $num: $!\n" if not defined $num or $num<=0;
+ $res .= $buf;
+ $cnt -= $num;
+ }
+ } else {
+ chomp $line;
+ if($line eq "ok") {
+ # print STDERR "S: ok (".length($res).")\n";
+ return $res;
+ } elsif($line =~ s/^E //) {
+ # print STDERR "S: $line\n";
+ } else {
+ die "Unknown: $line\n";
+ }
+ }
+ }
+}
+sub file {
+ my($self,$fn,$rev) = @_;
+ my $res;
+
+ if ($self->_file($fn,$rev)) {
+ $res = $self->_line();
+ return $res if defined $res;
+ }
+
+ # retry
+ $self->conn();
+ $self->_file($fn,$rev)
+ or die "No file command send\n";
+ $res = $self->_line();
+ die "No input: $fn $rev\n" unless defined $res;
+ return $res;
+}
+
+
+package main;
+
+my $cvs = CVSconn->new(dirname($cvs_tree), basename($cvs_tree));
+
+
+sub pdate($) {
+ 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);
}
-CVS2GIT=""
-CVSPS="--cvs-direct -x -A"
-while true; do
- case "$1" in
- -v) CVS2GIT="$1" ;;
- -z) shift; CVSPS="$CVSPS -z $1" ;;
- -*) usage ;;
- *) break ;;
- esac
- shift
-done
+sub pmode($) {
+ 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;
+}
-export CVSROOT="$1"
-export MODULE="$2"
-if [ ! "$CVSROOT" ] || [ ! "$MODULE" ] ; then
- usage
-fi
+my $tmpcv = "/var/cache/cvs";
-cvsps -h 2>&1 | grep -q "cvsps version 2.1" >& /dev/null || {
- echo "I need cvsps version 2.1"
- exit 1
+sub getwd() {
+ my $pwd = `pwd`;
+ chomp $pwd;
+ return $pwd;
}
-mkdir "$MODULE" || exit 1
-cd "$MODULE"
+-d $git_tree
+ or mkdir($git_tree,0777)
+ or die "Could not create $git_tree: $!";
+chdir($git_tree);
-TZ=UTC cvsps $CVSPS $MODULE > .git-cvsps-result
-[ -s .git-cvsps-result ] || exit 1
-git-cvs2git $CVS2GIT --cvsroot="$CVSROOT" --module="$MODULE" < .git-cvsps-result > .git-create-script || exit 1
-sh .git-create-script
+my $last_branch = "";
+my %branch_date;
+
+my $git_dir = $ENV{"GIT_DIR"} || ".git";
+$git_dir = getwd()."/".$git_dir unless $git_dir =~ m#^/#;
+$ENV{"GIT_DIR"} = $git_dir;
+unless(-d $git_dir) {
+ system("git-init-db");
+ die "Cannot init the GIT db at $git_tree: $?\n" if $?;
+ system("git-read-tree");
+ die "Cannot init an empty tree: $?\n" if $?;
+
+ $last_branch = $opt_o;
+} else {
+ $last_branch = basename(readlink("$git_dir/HEAD"));
+ die "Cannot read the last branch name: $!\n" unless $last_branch;
+
+ # Get the last import timestamps
+ opendir(D,"$git_dir/refs/heads");
+ while(defined(my $head = readdir(D))) {
+ next if $head =~ /^\./;
+ open(F,"$git_dir/refs/heads/$head")
+ or die "Bad head branch: $head: $!\n";
+ chomp(my $ftag = <F>);
+ close(F);
+ open(F,"git-cat-file commit $ftag |");
+ while(<F>) {
+ next unless /^author\s.*\s(\d+)\s[-+]\d{4}$/;
+ $branch_date{$head} = $1;
+ last;
+ }
+ close(F);
+ }
+ closedir(D);
+}
+
+-d $git_dir
+ or die "Could not create git subdir ($git_dir).\n";
+
+my $pid = open(CVS,"-|");
+die "Cannot fork: $!\n" unless defined $pid;
+unless($pid) {
+ exec("cvsps","-A","--cvs-direct",$cvs_tree);
+ die "Could not start cvsps: $!\n";
+}
+
+
+## cvsps output:
+#---------------------
+#PatchSet 314
+#Date: 1999/09/18 13:03:59
+#Author: wkoch
+#Branch: STABLE-BRANCH-1-0
+#Ancestor branch: HEAD
+#Tag: (none)
+#Log:
+# See ChangeLog: Sat Sep 18 13:03:28 CEST 1999 Werner Koch
+#Members:
+# README:1.57->1.57.2.1
+# VERSION:1.96->1.96.2.1
+#
+#---------------------
+
+my $state = 0;
+
+my($patchset,$date,$author,$branch,$ancestor,$tag,$logmsg);
+my(@old,@new);
+my $commit = sub {
+ my $pid;
+ system("git-update-cache","--force-remove","--",@old) if @old;
+ die "Cannot remove files: $?\n" if $?;
+ system("git-update-cache","--add","--",@new) if @new;
+ die "Cannot add files: $?\n" if $?;
+
+ $pid = open(C,"-|");
+ die "Cannot fork: $!" unless defined $pid;
+ unless($pid) {
+ exec("git-write-tree");
+ die "Cannot exec git-write-tree: $!\n";
+ }
+ chomp(my $tree = <C>);
+ length($tree) == 40
+ or die "Cannot get tree id ($tree): $!\n";
+ close(C)
+ or die "Error running git-write-tree: $?\n";
+ print "Tree ID $tree\n" if $opt_v;
+
+ my $parent = "";
+ if(open(C,"$git_dir/refs/heads/$last_branch")) {
+ chomp($parent = <C>);
+ close(C);
+ length($parent) == 40
+ or die "Cannot get parent id ($parent): $!\n";
+ print "Parent ID $parent\n" if $opt_v;
+ }
+
+ pipe(I,O)
+ or die "No pipe: $!\n";
+ $pid = open(C,"|-");
+ die "Cannot fork: $!" unless defined $pid;
+ unless($pid) {
+ close(I);
+ open(STDOUT,">&O");
+ my @par = ();
+ @par = ("-p",$parent) if $parent;
+ exec("env",
+ "GIT_AUTHOR_NAME=$author",
+ "GIT_AUTHOR_EMAIL=$author",
+ "GIT_AUTHOR_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
+ "GIT_COMMITTER_NAME=$author",
+ "GIT_COMMITTER_EMAIL=$author",
+ "GIT_COMMITTER_DATE=".strftime("+0000 %Y-%m-%d %H:%M:%S",gmtime($date)),
+ "git-commit-tree", $tree,@par);
+ die "Cannot exec git-commit-tree: $!\n";
+ }
+ close(O);
+ print C $logmsg
+ or die "Error writing to git-commit-tree: $!\n";
+ close(C)
+ or die "Error running git-commit-tree: $?\n";
+ print "Committed patch $patchset ($branch)\n" if $opt_v;
+ chomp(my $cid = <I>);
+ length($cid) == 40
+ or die "Cannot get commit id ($cid): $!\n";
+ print "Commit ID $cid\n" if $opt_v;
+ close(I);
+
+ open(C,">$git_dir/refs/heads/$branch")
+ or die "Cannot open branch $branch for update: $!\n";
+ print C "$cid\n"
+ or die "Cannot write branch $branch for update: $!\n";
+ close(C)
+ or die "Cannot write branch $branch for update: $!\n";
+
+ if($tag) {
+ open(C,">$git_dir/refs/tags/$tag")
+ or die "Cannot create tag $tag: $!\n";
+ print C "$cid\n"
+ or die "Cannot write tag $branch: $!\n";
+ close(C)
+ or die "Cannot write tag $branch: $!\n";
+ print "Created tag '$tag' on '$branch'\n" if $opt_v;
+ }
+
+ @old = ();
+ @new = ();
+};
+
+while(<CVS>) {
+ chomp;
+ if($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+//) {
+ s/\s+$//;
+ $author = $_;
+ $state = 4;
+ } elsif($state == 4 and s/^Branch:\s+//) {
+ s/\s+$//;
+ $branch = $_;
+ $state = 5;
+ } elsif($state == 5 and s/^Ancestor branch:\s+//) {
+ s/\s+$//;
+ $ancestor = $_;
+ $ancestor = $opt_o if $ancestor == "HEAD";
+ $state = 6;
+ } elsif($state == 5) {
+ $ancestor = undef;
+ $state = 6;
+ redo;
+ } elsif($state == 6 and s/^Tag:\s+//) {
+ s/\s+$//;
+ if($_ eq "(none)") {
+ $tag = undef;
+ } else {
+ $tag = $_;
+ }
+ $state = 7;
+ } elsif($state == 7 and /^Log:/) {
+ $logmsg = "";
+ $state = 8;
+ } elsif($state == 8 and /^Members:/) {
+ $branch = $opt_o if $branch eq "HEAD";
+ if(defined $branch_date{$branch} and $branch_date{$branch} >= $date) {
+ # skip
+ print "skip patchset $patchset: $date before $branch_date{$branch}\n";
+ $state = 11;
+ next;
+ }
+ if($ancestor) {
+ if(-f "$git_dir/refs/heads/$branch") {
+ print STDERR "Branch $branch already exists!\n";
+ $state=11;
+ next;
+ }
+ unless(open(H,"$git_dir/refs/heads/$ancestor")) {
+ print STDERR "Branch $ancestor does not exist!\n";
+ $state=11;
+ next;
+ }
+ chomp(my $id = <H>);
+ close(H);
+ unless(open(H,"> $git_dir/refs/heads/$branch")) {
+ print STDERR "Could not create branch $branch: $!\n";
+ $state=11;
+ next;
+ }
+ print H "$id\n"
+ or die "Could not write branch $branch: $!";
+ close(H)
+ or die "Could not write branch $branch: $!";
+ }
+ if(($ancestor || $branch) ne $last_branch) {
+ system("git-read-tree -m -u $last_branch $branch");
+ die "read-tree $branch failed at $branch: $?\n" if $?;
+ }
+ if($branch ne $last_branch) {
+ unlink("$git_dir/HEAD");
+ symlink("refs/heads/$branch","$git_dir/HEAD");
+ $last_branch = $branch;
+ }
+ $state = 9;
+ } elsif($state == 8) {
+ $logmsg .= "$_\n";
+ } elsif($state == 9 and /^\s+(\S+):(?:INITIAL|\d(?:\.\d+)+)->(\d(?:\.\d+)+)\s*$/) {
+# VERSION:1.96->1.96.2.1
+ my $fn = $1;
+ my $data = $cvs->file($fn,$2);
+ print "Update $fn: ".length($data)." bytes.\n";
+ mkpath(dirname($fn),$opt_v);
+ open(F,"> ./$fn")
+ or die "Cannot create '$fn': $!\n";
+ print F $data
+ or die "Cannot write to '$fn': $!\n";
+ close(F)
+ or die "Cannot write to '$fn': $!\n";
+ chmod(pmode($cvs->{'mode'}), $fn);
+ push(@new,$fn); # may be resurrected!
+ } elsif($state == 9 and /^\s+(\S+):\d(?:\.\d+)+->(\d(?:\.\d+)+)\(DEAD\)\s*$/) {
+ push(@old,$1);
+ } elsif($state == 9 and /^\s*$/) {
+ $state = 10;
+ } elsif(($state == 9 or $state == 10) and /^-+$/) {
+ &$commit();
+ $state = 1;
+ } elsif($state == 11 and /^-+$/) {
+ $state = 1;
+ } elsif(/^-+$/) { # end of unknown-line processing
+ $state = 1;
+ } elsif($state != 11) { # ignore stuff when skipping
+ print "* UNKNOWN LINE * $_\n";
+ }
+}
+&$commit() if $branch and $state != 11;
+print "DONE\n" if $opt_v;