| 1 |
#!/usr/bin/perl -w |
| 2 |
|
| 3 |
# This script will transfer changes from Subversion repository |
| 4 |
# to CVS repository (e.g. SourceForge) while preserving commit |
| 5 |
# logs. |
| 6 |
# |
| 7 |
# Based on original shell version by Tollef Fog Heen available at |
| 8 |
# http://raw.no/personal/blog |
| 9 |
# |
| 10 |
# 2004-03-09 Dobrica Pavlinusic <dpavlin@rot13.org> |
| 11 |
# |
| 12 |
# documentation is after __END__ |
| 13 |
|
| 14 |
use strict; |
| 15 |
use File::Temp qw/ tempdir /; |
| 16 |
use File::Path; |
| 17 |
use Data::Dumper; |
| 18 |
use XML::Simple; |
| 19 |
|
| 20 |
# do we want to sync just part of repository? |
| 21 |
my $partial_import = 1; |
| 22 |
|
| 23 |
# do we want to add svk-like prefix with original revision, author and date? |
| 24 |
my $decorate_commit_message = 1; |
| 25 |
|
| 26 |
if (@ARGV < 2) { |
| 27 |
print "usage: $0 SVN_URL CVSROOT CVSREPOSITORY\n"; |
| 28 |
exit 1; |
| 29 |
} |
| 30 |
|
| 31 |
my ($SVNROOT,$CVSROOT, $CVSREP) = @ARGV; |
| 32 |
|
| 33 |
if ($SVNROOT !~ m,^[\w+]+:///*\w+,) { |
| 34 |
print "ERROR: invalid svn root $SVNROOT\n"; |
| 35 |
exit 1; |
| 36 |
} |
| 37 |
|
| 38 |
# Ensure File::Temp::END can clean up: |
| 39 |
$SIG{__DIE__} = sub { chdir("/tmp"); die @_ }; |
| 40 |
|
| 41 |
my $TMPDIR=tempdir( "/tmp/checkoutXXXXX", CLEANUP => 1 ); |
| 42 |
|
| 43 |
sub cd_tmp { |
| 44 |
chdir($TMPDIR) || die "can't cd to $TMPDIR: $!"; |
| 45 |
} |
| 46 |
|
| 47 |
sub cd_rep { |
| 48 |
chdir("$TMPDIR/$CVSREP") || die "can't cd to $TMPDIR/$CVSREP: $!"; |
| 49 |
} |
| 50 |
|
| 51 |
print "## using TMPDIR $TMPDIR\n"; |
| 52 |
|
| 53 |
# cvs command with root |
| 54 |
my $cvs="cvs -f -d $CVSROOT"; |
| 55 |
|
| 56 |
# current revision in CVS |
| 57 |
my $rev; |
| 58 |
|
| 59 |
# |
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# sub to do logging and system calls |
| 61 |
# |
| 62 |
sub log_system($$) { |
| 63 |
my ($cmd,$errmsg) = @_; |
| 64 |
print STDERR "## $cmd\n"; |
| 65 |
system($cmd) == 0 || die "$errmsg: $!"; |
| 66 |
} |
| 67 |
|
| 68 |
# |
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# sub to commit .svn rev file later |
| 70 |
# |
| 71 |
sub commit_svnrev { |
| 72 |
my $rev = shift @_; |
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my $add_new = shift @_; |
| 74 |
|
| 75 |
die "commit_svnrev needs revision" if (! defined($rev)); |
| 76 |
|
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open(SVNREV,"> .svnrev") || die "can't open $TMPDIR/$CVSREP/.svnrev: $!"; |
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print SVNREV $rev; |
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close(SVNREV); |
| 80 |
|
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my $path=".svnrev"; |
| 82 |
|
| 83 |
if ($add_new) { |
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system "$cvs add '$path'" || die "cvs add of $path failed: $!"; |
| 85 |
} else { |
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my $msg="subversion revision $rev commited to CVS"; |
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print "$msg\n"; |
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system "$cvs commit -m '$msg' '$path'" || die "cvs commit of $path failed: $!"; |
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} |
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} |
| 91 |
|
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sub add_dir($$) { |
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my ($path,$msg) = @_; |
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print "# add_dir($path)\n"; |
| 95 |
die "add_dir($path) is not directory" unless (-d $path); |
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|
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my $curr_dir; |
| 98 |
|
| 99 |
foreach my $d (split(m#/#, $path)) { |
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$curr_dir .= ( $curr_dir ? '/' : '') . $d; |
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|
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next if in_entries($curr_dir); |
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next if (-e "$curr_dir/CVS"); |
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|
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log_system("$cvs add '$curr_dir'", "cvs add of $curr_dir failed"); |
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} |
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} |
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|
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# ok, now do the checkout |
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eval { |
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cd_tmp; |
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log_system("$cvs -q checkout $CVSREP", "cvs checkout failed"); |
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}; |
| 114 |
|
| 115 |
if ($@) { |
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print <<_NEW_REP_; |
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|
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There is no CVS repository '$CVSREP' in your CVS. I will assume that |
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this is import of new module in your CVS and start from revision 0. |
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|
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Press enter to continue importing new CVS repository or CTRL+C to abort. |
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|
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_NEW_REP_ |
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|
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print "start import of new module [yes]: "; |
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my $in = <STDIN>; |
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cd_tmp; |
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mkdir($CVSREP) || die "can't create $CVSREP: $!"; |
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cd_rep; |
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|
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open(SVNREV,"> .svnrev") || die "can't open $CVSREP/.svnrev: $!"; |
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print SVNREV "0"; |
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close(SVNREV); |
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|
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$rev = 0; |
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|
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# create new module |
| 138 |
cd_rep; |
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log_system("$cvs import -d -m 'new CVS module' $CVSREP svn r$rev", "import of new repository"); |
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cd_tmp; |
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rmtree($CVSREP) || die "can't remove $CVSREP"; |
| 142 |
log_system("$cvs -q checkout $CVSREP", "cvs checkout failed"); |
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cd_rep; |
| 144 |
|
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} else { |
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# import into existing module directory in CVS |
| 147 |
|
| 148 |
cd_rep; |
| 149 |
# check if svnrev exists |
| 150 |
if (! -e ".svnrev") { |
| 151 |
print <<_USAGE_; |
| 152 |
|
| 153 |
Your CVS repository doesn't have .svnrev file! |
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|
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This file is used to keep CVS repository and Subversion in sync, so |
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that only newer changes will be commited. |
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|
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It's quote possible that this is first svn2cvs run for this repository. |
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If so, you will have to identify correct svn revision which |
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corresponds to current version of CVS repository that has just |
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been checkouted. |
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|
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If you migrated your cvs repository to svn using cvs2svn, this will be |
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last Subversion revision. If this is initial run of conversion of |
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Subversion repository to CVS, correct revision is 0. |
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|
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_USAGE_ |
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|
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print "svn revision corresponding to CVS [abort]: "; |
| 170 |
my $in = <STDIN>; |
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chomp($in); |
| 172 |
if ($in !~ /^\d+$/) { |
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print "Aborting: revision not a number\n"; |
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exit 1; |
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} else { |
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$rev = $in; |
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commit_svnrev($rev,1); # create new |
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} |
| 179 |
} else { |
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open(SVNREV,".svnrev") || die "can't open $TMPDIR/$CVSREP/.svnrev: $!"; |
| 181 |
$rev = <SVNREV>; |
| 182 |
chomp($rev); |
| 183 |
close(SVNREV); |
| 184 |
} |
| 185 |
|
| 186 |
print "Starting after revision $rev\n"; |
| 187 |
$rev++; |
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} |
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|
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|
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# |
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# FIXME!! HEAD should really be next verison and loop because this way we |
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# loose multiple edits of same file and corresponding messages. On the |
| 194 |
# other hand, if you want to compress your traffic to CVS server and don't |
| 195 |
# case much about accuracy and completnes of logs there, this might |
| 196 |
# be good. YMMV |
| 197 |
# |
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open(LOG, "svn log -r $rev:HEAD -v --xml $SVNROOT |") || die "svn log for repository $SVNROOT failed: $!"; |
| 199 |
my $log; |
| 200 |
while(<LOG>) { |
| 201 |
$log .= $_; |
| 202 |
} |
| 203 |
close(LOG); |
| 204 |
|
| 205 |
|
| 206 |
my $xml; |
| 207 |
eval { |
| 208 |
$xml = XMLin($log, ForceArray => [ 'logentry', 'path' ]); |
| 209 |
}; |
| 210 |
|
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|
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#=begin log_example |
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# |
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#------------------------------------------------------------------------ |
| 215 |
#r256 | dpavlin | 2004-03-09 13:18:17 +0100 (Tue, 09 Mar 2004) | 2 lines |
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# |
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#ported r254 from hidra branch |
| 218 |
# |
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#=cut |
| 220 |
|
| 221 |
my $fmt = "\n" . "-" x 79 . "\nr%5s| %8s | %s\n\n%s\n"; |
| 222 |
|
| 223 |
if (! $xml->{'logentry'}) { |
| 224 |
print "no newer log entries in Subversion repostory. CVS is current\n"; |
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exit 0; |
| 226 |
} |
| 227 |
|
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# return all files in CVS/Entries |
| 229 |
sub entries($) { |
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my $dir = shift; |
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die "entries expects directory argument!" unless -d $dir; |
| 232 |
my @entries; |
| 233 |
open(my $fh, "$dir/CVS/Entries") || return 0; |
| 234 |
while(<$fh>) { |
| 235 |
if ( m{^D/([^/]+)}, ) { |
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my $sub_dir = $1; |
| 237 |
warn "#### entries recurse into: $dir/$sub_dir"; |
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push @entries, map { "$sub_dir/$_" } entries("$dir/$sub_dir"); |
| 239 |
push @entries, $sub_dir; |
| 240 |
} elsif ( m{^/([^/]+)/} ) { |
| 241 |
push @entries, $1; |
| 242 |
} elsif ( ! m{^D$} ) { |
| 243 |
die "can't decode entries line: $_"; |
| 244 |
} |
| 245 |
} |
| 246 |
close($fh); |
| 247 |
warn "#### entries($dir) => ",join("|",@entries); |
| 248 |
return @entries; |
| 249 |
} |
| 250 |
|
| 251 |
# check if file exists in CVS/Entries |
| 252 |
sub in_entries($) { |
| 253 |
my $path = shift; |
| 254 |
if ($path =~ m,^(.*?/*)([^/]+)$,) { |
| 255 |
my ($dir,$file) = ($1,$2); |
| 256 |
if ($dir !~ m,/$, && $dir ne "") { |
| 257 |
$dir .= "/"; |
| 258 |
} |
| 259 |
|
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open(my $fh, "$dir/CVS/Entries") || return 0; #die "no entries file: $dir/CVS/Entries"; |
| 261 |
while(<$fh>) { |
| 262 |
return 1 if (m{^/$file/}); |
| 263 |
} |
| 264 |
close($fh); |
| 265 |
return 0; |
| 266 |
} else { |
| 267 |
die "can't split '$path' to dir and file!"; |
| 268 |
} |
| 269 |
} |
| 270 |
|
| 271 |
cd_tmp; |
| 272 |
cd_rep; |
| 273 |
|
| 274 |
foreach my $e (@{$xml->{'logentry'}}) { |
| 275 |
die "BUG: revision from .svnrev ($rev) greater than from subversion (".$e->{'revision'}.")" if ($rev > $e->{'revision'}); |
| 276 |
$rev = $e->{'revision'}; |
| 277 |
log_system("svn export --force -q -r $rev $SVNROOT $TMPDIR/$CVSREP", "svn export of revision $rev failed"); |
| 278 |
|
| 279 |
# deduce name of svn directory |
| 280 |
my $SVNREP = ""; |
| 281 |
my $tmpsvn = $SVNROOT || die "BUG: SVNROOT empty!"; |
| 282 |
my $tmppath = $e->{'paths'}->{'path'}->[0]->{'content'} || die "BUG: tmppath empty!"; |
| 283 |
do { |
| 284 |
if ($tmpsvn =~ s#(/[^/]+)/*$##) { # vim fix |
| 285 |
$SVNREP = $1 . $SVNREP; |
| 286 |
} elsif ($e->{'paths'}->{'path'}->[0]->{'copyfrom-path'}) { |
| 287 |
print "NOTICE: copyfrom outside synced repository ignored - skipping\n"; |
| 288 |
next; |
| 289 |
} else { |
| 290 |
print "NOTICE: can't deduce svn dir from $SVNROOT - skipping\n"; |
| 291 |
next; |
| 292 |
} |
| 293 |
} until ($tmppath =~ m/^$SVNREP/); |
| 294 |
|
| 295 |
print "NOTICE: using $SVNREP as directory for svn\n"; |
| 296 |
|
| 297 |
printf($fmt, $e->{'revision'}, $e->{'author'}, $e->{'date'}, $e->{'msg'}); |
| 298 |
my @commit; |
| 299 |
|
| 300 |
my $msg = $e->{'msg'}; |
| 301 |
$msg =~ s/'/'\\''/g; # quote " |
| 302 |
|
| 303 |
$msg = 'r' . $rev . ' ' . $e->{author} . ' | ' . $e->{date} . "\n" . $msg if $decorate_commit_message; |
| 304 |
|
| 305 |
sub cvs_commit { |
| 306 |
my $msg = shift || die "no msg?"; |
| 307 |
if ( ! @_ ) { |
| 308 |
warn "commit ignored, no files\n"; |
| 309 |
return; |
| 310 |
} |
| 311 |
log_system("$cvs commit -m '$msg' '".join("' '",@_)."'", "cvs commit of ".join(",",@_)." failed"); |
| 312 |
} |
| 313 |
|
| 314 |
foreach my $p (@{$e->{'paths'}->{'path'}}) { |
| 315 |
my ($action,$path) = ($p->{'action'},$p->{'content'}); |
| 316 |
|
| 317 |
next if ($path =~ m#/\.svnrev$#); |
| 318 |
|
| 319 |
print "svn2cvs: $action $path\n"; |
| 320 |
|
| 321 |
# prepare path and message |
| 322 |
my $file = $path; |
| 323 |
if ( $path !~ s#^\Q$SVNREP\E/*## ) { |
| 324 |
print "NOTICE: skipping '$path' which isn't under repository root '$SVNREP'\n"; |
| 325 |
die unless $partial_import; |
| 326 |
next; |
| 327 |
} |
| 328 |
|
| 329 |
if (! $path) { |
| 330 |
print "NOTICE: skipped this operation. Probably trunk creation\n"; |
| 331 |
next; |
| 332 |
} |
| 333 |
|
| 334 |
my $msg = $e->{'msg'}; |
| 335 |
$msg =~ s/'/'\\''/g; # quote " |
| 336 |
|
| 337 |
sub add_path { |
| 338 |
my $path = shift || die "no path?"; |
| 339 |
|
| 340 |
if (-d $path) { |
| 341 |
add_dir($path, $msg); |
| 342 |
} elsif ($path =~ m,^(.+)/[^/]+$, && ! -e "$1/CVS/Root") { |
| 343 |
my $dir = $1; |
| 344 |
in_entries($dir) || add_dir($dir, $msg); |
| 345 |
in_entries($path) || log_system("$cvs add '$path'", "cvs add of $path failed"); |
| 346 |
} else { |
| 347 |
in_entries($path) || log_system("$cvs add '$path'", "cvs add of $path failed"); |
| 348 |
} |
| 349 |
} |
| 350 |
|
| 351 |
if ($action =~ /M/) { |
| 352 |
if ( in_entries( $path ) ) { |
| 353 |
print "svn2cvs: modify $path -- nop\n"; |
| 354 |
} else { |
| 355 |
print "WARNING: modify $path which isn't in CVS, adding...\n"; |
| 356 |
add_path($path); |
| 357 |
} |
| 358 |
} elsif ($action =~ /A/) { |
| 359 |
add_path($path); |
| 360 |
} elsif ($action =~ /D/) { |
| 361 |
if (-e $path) { |
| 362 |
if ( -d $path ) { |
| 363 |
warn "#### remove directory: $path"; |
| 364 |
my @sub_commit; |
| 365 |
foreach my $f ( entries($path) ) { |
| 366 |
$f = "$path/$f"; |
| 367 |
if ( -f $f ) { |
| 368 |
unlink($f) || die "can't delete file $f: $!"; |
| 369 |
# } else { |
| 370 |
# rmtree($f) || die "can't delete dir $f: $!"; |
| 371 |
} |
| 372 |
log_system("$cvs delete '$f'", "cvs delete of file $f failed"); |
| 373 |
push @sub_commit, $f; |
| 374 |
} |
| 375 |
log_system("$cvs delete '$path'", "cvs delete of file $path failed"); |
| 376 |
cvs_commit($msg, @sub_commit, $path); |
| 377 |
log_system("$cvs update -dP '$path'", "cvs update -dP $path failed"); |
| 378 |
} else { |
| 379 |
warn "#### remove file: $path"; |
| 380 |
unlink($path) || die "can't delete $path: $!"; |
| 381 |
log_system("$cvs delete '$path'", "cvs delete of dir $path failed"); |
| 382 |
} |
| 383 |
} else { |
| 384 |
print "WARNING: $path is not present, skipping...\n"; |
| 385 |
undef $path; |
| 386 |
} |
| 387 |
} else { |
| 388 |
print "WARNING: action $action not implemented on $path. Bug or missing feature of $0\n"; |
| 389 |
} |
| 390 |
|
| 391 |
# save commits for later |
| 392 |
push @commit, $path if ($path); |
| 393 |
|
| 394 |
} |
| 395 |
|
| 396 |
# now commit changes |
| 397 |
cvs_commit($msg, @commit); |
| 398 |
|
| 399 |
commit_svnrev($rev); |
| 400 |
} |
| 401 |
|
| 402 |
# cd out of $CVSREP before File::Temp::END is called |
| 403 |
chdir("/tmp") || die "can't cd to /tmp: $!"; |
| 404 |
|
| 405 |
__END__ |
| 406 |
|
| 407 |
=pod |
| 408 |
|
| 409 |
=head1 NAME |
| 410 |
|
| 411 |
svn2cvs - save subversion commits to (read-only) cvs repository |
| 412 |
|
| 413 |
=head1 SYNOPSIS |
| 414 |
|
| 415 |
./svn2cvs.pl SVN_URL CVSROOT CVSREPOSITORY |
| 416 |
|
| 417 |
Usage example (used to self-host this script): |
| 418 |
|
| 419 |
./svn2cvs.pl file:///home/dpavlin/private/svn/svn2cvs/trunk/ \ |
| 420 |
:pserver:dpavlin@cvs.tigris.org:/cvs svn2cvs/src |
| 421 |
|
| 422 |
=head1 DESCRIPTION |
| 423 |
|
| 424 |
This script will allows you to commit changes made to Subversion repository to |
| 425 |
(read-only) CVS repository manually or from Subversion's C<post-commit> hook. |
| 426 |
|
| 427 |
It's using F<.svnrev> file (which will be created on first run) in |
| 428 |
B<CVSROOT/CVSREPOSITORY> to store last Subversion revision which was |
| 429 |
committed into CVS. |
| 430 |
|
| 431 |
One run will do following things: |
| 432 |
|
| 433 |
=over 4 |
| 434 |
|
| 435 |
=item * |
| 436 |
checkout B<CVSREPOSITORY> from B<CVSROOT> to temporary directory |
| 437 |
|
| 438 |
=item * |
| 439 |
check if F<.svnrev> file exists and create it if it doesn't |
| 440 |
|
| 441 |
=item * |
| 442 |
loop through all revisions from current in B<CVSROOT/CVSREPOSITORY> (using |
| 443 |
F<.svnrev>) up to B<HEAD> (current one) |
| 444 |
|
| 445 |
=over 5 |
| 446 |
|
| 447 |
=item * |
| 448 |
checkout next Subversion revision from B<SVN_URL> over CVS checkout |
| 449 |
temporary directory |
| 450 |
|
| 451 |
=item * |
| 452 |
make modification (add and/or delete) done in that revision |
| 453 |
|
| 454 |
=item * |
| 455 |
commit modification (added, deleted or modified files/dirs) while |
| 456 |
preserving original message from CVS |
| 457 |
|
| 458 |
=item * |
| 459 |
update F<.svnrev> to match current revision |
| 460 |
|
| 461 |
=back |
| 462 |
|
| 463 |
=item * |
| 464 |
cleanup temporary directory |
| 465 |
|
| 466 |
=back |
| 467 |
|
| 468 |
If checkout fails for some reason (e.g. flaky ssh connection), you will |
| 469 |
still have valid CVS repository, so all you have to do is run B<svn2cvs.pl> |
| 470 |
again. |
| 471 |
|
| 472 |
=head1 WARNINGS |
| 473 |
|
| 474 |
"Cheap" copy operations in Subversion are not at all cheap in CVS. They will |
| 475 |
create multiple copies of files in CVS repository! |
| 476 |
|
| 477 |
This script assume that you want to sync your C<trunk> (or any other |
| 478 |
directory for that matter) directory with CVS, not root of your subversion. |
| 479 |
This might be considered bug, but since common practise is to have |
| 480 |
directories C<trunk> and C<branches> in svn and source code in them, it's |
| 481 |
not serious limitation. |
| 482 |
|
| 483 |
=head1 RELATED PROJECTS |
| 484 |
|
| 485 |
B<Subversion> L<http://subversion.tigris.org/> version control system that is a |
| 486 |
compelling replacement for CVS in the open source community. |
| 487 |
|
| 488 |
B<cvs2svn> L<http://cvs2svn.tigris.org/> converts a CVS repository to a |
| 489 |
Subversion repository. It is designed for one-time conversions, not for |
| 490 |
repeated synchronizations between CVS and Subversion. |
| 491 |
|
| 492 |
=head1 CHANGES |
| 493 |
|
| 494 |
Versions of this utility are actually Subversion repository revisions, |
| 495 |
so they might not be in sequence. |
| 496 |
|
| 497 |
=over 3 |
| 498 |
|
| 499 |
=item r10 |
| 500 |
|
| 501 |
First release available to public |
| 502 |
|
| 503 |
=item r15 |
| 504 |
|
| 505 |
Addition of comprehensive documentation, fixes for quoting in commit |
| 506 |
messages, and support for skipping changes which are not under current |
| 507 |
Subversion checkout root (e.g. branches). |
| 508 |
|
| 509 |
=item r18 |
| 510 |
|
| 511 |
Support for importing your svn into empty CVS repository (it will first |
| 512 |
create module and than dump all revisions). |
| 513 |
Group commit operations to save round-trips to CVS server. |
| 514 |
Documentation improvements and other small fixes. |
| 515 |
|
| 516 |
=item r20 |
| 517 |
|
| 518 |
Fixed path deduction (overlap between Subversion reporistory and CVS checkout). |
| 519 |
|
| 520 |
=item r21 |
| 521 |
|
| 522 |
Use C<update -d> instead of checkout after import. |
| 523 |
Added fixes by Paul Egan <paulegan@mail.com> for XMLin and fixing working |
| 524 |
directory. |
| 525 |
|
| 526 |
=item r22 |
| 527 |
|
| 528 |
Rewritten import from revision 0 to empty repository, better importing |
| 529 |
of deep directory structures, initial support for recovery from partial |
| 530 |
commit. |
| 531 |
|
| 532 |
=back |
| 533 |
|
| 534 |
=head1 AUTHOR |
| 535 |
|
| 536 |
Dobrica Pavlinusic <dpavlin@rot13.org> |
| 537 |
|
| 538 |
L<https://www.rot13.org/~dpavlin/> |
| 539 |
|
| 540 |
=head1 LICENSE |
| 541 |
|
| 542 |
This product is licensed under GNU Public License (GPL) v2 or later. |
| 543 |
|
| 544 |
=cut |
| 545 |
|
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Revision Log