diff options
Diffstat (limited to 'third_party/git/perl/Git/SVN.pm')
| -rw-r--r-- | third_party/git/perl/Git/SVN.pm | 2553 |
1 files changed, 0 insertions, 2553 deletions
diff --git a/third_party/git/perl/Git/SVN.pm b/third_party/git/perl/Git/SVN.pm deleted file mode 100644 index 76b2965905..0000000000 --- a/third_party/git/perl/Git/SVN.pm +++ /dev/null @@ -1,2553 +0,0 @@ -package Git::SVN; -use strict; -use warnings; -use Fcntl qw/:DEFAULT :seek/; -use constant rev_map_fmt => 'NH40'; -use vars qw/$_no_metadata - $_repack $_repack_flags $_use_svm_props $_head - $_use_svnsync_props $no_reuse_existing - $_use_log_author $_add_author_from $_localtime/; -use Carp qw/croak/; -use File::Path qw/mkpath/; -use IPC::Open3; -use Memoize; # core since 5.8.0, Jul 2002 -use POSIX qw(:signal_h); -use Time::Local; - -use Git qw( - command - command_oneline - command_noisy - command_output_pipe - command_close_pipe - get_tz_offset -); -use Git::SVN::Utils qw( - fatal - can_compress - join_paths - canonicalize_path - canonicalize_url - add_path_to_url -); - -my $memo_backend; -our $_follow_parent = 1; -our $_minimize_url = 'unset'; -our $default_repo_id = 'svn'; -our $default_ref_id = $ENV{GIT_SVN_ID} || 'git-svn'; - -my ($_gc_nr, $_gc_period); - -# properties that we do not log: -my %SKIP_PROP; -BEGIN { - %SKIP_PROP = map { $_ => 1 } qw/svn:wc:ra_dav:version-url - svn:special svn:executable - svn:entry:committed-rev - svn:entry:last-author - svn:entry:uuid - svn:entry:committed-date/; - - # some options are read globally, but can be overridden locally - # per [svn-remote "..."] section. Command-line options will *NOT* - # override options set in an [svn-remote "..."] section - no strict 'refs'; - for my $option (qw/follow_parent no_metadata use_svm_props - use_svnsync_props/) { - my $key = $option; - $key =~ tr/_//d; - my $prop = "-$option"; - *$option = sub { - my ($self) = @_; - return $self->{$prop} if exists $self->{$prop}; - my $k = "svn-remote.$self->{repo_id}.$key"; - eval { command_oneline(qw/config --get/, $k) }; - if ($@) { - $self->{$prop} = ${"Git::SVN::_$option"}; - } else { - my $v = command_oneline(qw/config --bool/,$k); - $self->{$prop} = $v eq 'false' ? 0 : 1; - } - return $self->{$prop}; - } - } -} - - -my (%LOCKFILES, %INDEX_FILES); -END { - unlink keys %LOCKFILES if %LOCKFILES; - unlink keys %INDEX_FILES if %INDEX_FILES; -} - -sub resolve_local_globs { - my ($url, $fetch, $glob_spec) = @_; - return unless defined $glob_spec; - my $ref = $glob_spec->{ref}; - my $path = $glob_spec->{path}; - foreach (command(qw#for-each-ref --format=%(refname) refs/#)) { - next unless m#^$ref->{regex}$#; - my $p = $1; - my $pathname = desanitize_refname($path->full_path($p)); - my $refname = desanitize_refname($ref->full_path($p)); - if (my $existing = $fetch->{$pathname}) { - if ($existing ne $refname) { - die "Refspec conflict:\n", - "existing: $existing\n", - " globbed: $refname\n"; - } - my $u = (::cmt_metadata("$refname"))[0]; - if (!defined($u)) { - warn -"W: $refname: no associated commit metadata from SVN, skipping\n"; - next; - } - $u =~ s!^\Q$url\E(/|$)!! or die - "$refname: '$url' not found in '$u'\n"; - if ($pathname ne $u) { - warn "W: Refspec glob conflict ", - "(ref: $refname):\n", - "expected path: $pathname\n", - " real path: $u\n", - "Continuing ahead with $u\n"; - next; - } - } else { - $fetch->{$pathname} = $refname; - } - } -} - -sub parse_revision_argument { - my ($base, $head) = @_; - if (!defined $::_revision || $::_revision eq 'BASE:HEAD') { - return ($base, $head); - } - return ($1, $2) if ($::_revision =~ /^(\d+):(\d+)$/); - return ($::_revision, $::_revision) if ($::_revision =~ /^\d+$/); - return ($head, $head) if ($::_revision eq 'HEAD'); - return ($base, $1) if ($::_revision =~ /^BASE:(\d+)$/); - return ($1, $head) if ($::_revision =~ /^(\d+):HEAD$/); - die "revision argument: $::_revision not understood by git-svn\n"; -} - -sub fetch_all { - my ($repo_id, $remotes) = @_; - if (ref $repo_id) { - my $gs = $repo_id; - $repo_id = undef; - $repo_id = $gs->{repo_id}; - } - $remotes ||= read_all_remotes(); - my $remote = $remotes->{$repo_id} or - die "[svn-remote \"$repo_id\"] unknown\n"; - my $fetch = $remote->{fetch}; - my $url = $remote->{url} or die "svn-remote.$repo_id.url not defined\n"; - my (@gs, @globs); - my $ra = Git::SVN::Ra->new($url); - my $uuid = $ra->get_uuid; - my $head = $ra->get_latest_revnum; - - # ignore errors, $head revision may not even exist anymore - eval { $ra->get_log("", $head, 0, 1, 0, 1, sub { $head = $_[1] }) }; - warn "W: $@\n" if $@; - - my $base = defined $fetch ? $head : 0; - - # read the max revs for wildcard expansion (branches/*, tags/*) - foreach my $t (qw/branches tags/) { - defined $remote->{$t} or next; - push @globs, @{$remote->{$t}}; - - my $max_rev = eval { tmp_config(qw/--int --get/, - "svn-remote.$repo_id.${t}-maxRev") }; - if (defined $max_rev && ($max_rev < $base)) { - $base = $max_rev; - } elsif (!defined $max_rev) { - $base = 0; - } - } - - if ($fetch) { - foreach my $p (sort keys %$fetch) { - my $gs = Git::SVN->new($fetch->{$p}, $repo_id, $p); - my $lr = $gs->rev_map_max; - if (defined $lr) { - $base = $lr if ($lr < $base); - } - push @gs, $gs; - } - } - - ($base, $head) = parse_revision_argument($base, $head); - $ra->gs_fetch_loop_common($base, $head, \@gs, \@globs); -} - -sub read_all_remotes { - my $r = {}; - my $use_svm_props = eval { command_oneline(qw/config --bool - svn.useSvmProps/) }; - $use_svm_props = $use_svm_props eq 'true' if $use_svm_props; - my $svn_refspec = qr{\s*(.*?)\s*:\s*(.+?)\s*}; - foreach (grep { s/^svn-remote\.// } command(qw/config -l/)) { - if (m!^(.+)\.fetch=$svn_refspec$!) { - my ($remote, $local_ref, $remote_ref) = ($1, $2, $3); - die("svn-remote.$remote: remote ref '$remote_ref' " - . "must start with 'refs/'\n") - unless $remote_ref =~ m{^refs/}; - $local_ref = uri_decode($local_ref); - $r->{$remote}->{fetch}->{$local_ref} = $remote_ref; - $r->{$remote}->{svm} = {} if $use_svm_props; - } elsif (m!^(.+)\.usesvmprops=\s*(.*)\s*$!) { - $r->{$1}->{svm} = {}; - } elsif (m!^(.+)\.url=\s*(.*)\s*$!) { - $r->{$1}->{url} = canonicalize_url($2); - } elsif (m!^(.+)\.pushurl=\s*(.*)\s*$!) { - $r->{$1}->{pushurl} = canonicalize_url($2); - } elsif (m!^(.+)\.ignore-refs=\s*(.*)\s*$!) { - $r->{$1}->{ignore_refs_regex} = $2; - } elsif (m!^(.+)\.(branches|tags)=$svn_refspec$!) { - my ($remote, $t, $local_ref, $remote_ref) = - ($1, $2, $3, $4); - die("svn-remote.$remote: remote ref '$remote_ref' ($t) " - . "must start with 'refs/'\n") - unless $remote_ref =~ m{^refs/}; - $local_ref = uri_decode($local_ref); - - require Git::SVN::GlobSpec; - my $rs = { - t => $t, - remote => $remote, - path => Git::SVN::GlobSpec->new($local_ref, 1), - ref => Git::SVN::GlobSpec->new($remote_ref, 0) }; - if (length($rs->{ref}->{right}) != 0) { - die "The '*' glob character must be the last ", - "character of '$remote_ref'\n"; - } - push @{ $r->{$remote}->{$t} }, $rs; - } - } - - map { - if (defined $r->{$_}->{svm}) { - my $svm; - eval { - my $section = "svn-remote.$_"; - $svm = { - source => tmp_config('--get', - "$section.svm-source"), - replace => tmp_config('--get', - "$section.svm-replace"), - } - }; - $r->{$_}->{svm} = $svm; - } - } keys %$r; - - foreach my $remote (keys %$r) { - foreach ( grep { defined $_ } - map { $r->{$remote}->{$_} } qw(branches tags) ) { - foreach my $rs ( @$_ ) { - $rs->{ignore_refs_regex} = - $r->{$remote}->{ignore_refs_regex}; - } - } - } - - $r; -} - -sub init_vars { - $_gc_nr = $_gc_period = 1000; - if (defined $_repack || defined $_repack_flags) { - warn "Repack options are obsolete; they have no effect.\n"; - } -} - -sub verify_remotes_sanity { - return unless -d $ENV{GIT_DIR}; - my %seen; - foreach (command(qw/config -l/)) { - if (m!^svn-remote\.(?:.+)\.fetch=.*:refs/remotes/(\S+)\s*$!) { - if ($seen{$1}) { - die "Remote ref refs/remote/$1 is tracked by", - "\n \"$_\"\nand\n \"$seen{$1}\"\n", - "Please resolve this ambiguity in ", - "your git configuration file before ", - "continuing\n"; - } - $seen{$1} = $_; - } - } -} - -sub find_existing_remote { - my ($url, $remotes) = @_; - return undef if $no_reuse_existing; - my $existing; - foreach my $repo_id (keys %$remotes) { - my $u = $remotes->{$repo_id}->{url} or next; - next if $u ne $url; - $existing = $repo_id; - last; - } - $existing; -} - -sub init_remote_config { - my ($self, $url, $no_write) = @_; - $url = canonicalize_url($url); - my $r = read_all_remotes(); - my $existing = find_existing_remote($url, $r); - if ($existing) { - unless ($no_write) { - print STDERR "Using existing ", - "[svn-remote \"$existing\"]\n"; - } - $self->{repo_id} = $existing; - } elsif ($_minimize_url) { - my $min_url = Git::SVN::Ra->new($url)->minimize_url; - $existing = find_existing_remote($min_url, $r); - if ($existing) { - unless ($no_write) { - print STDERR "Using existing ", - "[svn-remote \"$existing\"]\n"; - } - $self->{repo_id} = $existing; - } - if ($min_url ne $url) { - unless ($no_write) { - print STDERR "Using higher level of URL: ", - "$url => $min_url\n"; - } - my $old_path = $self->path; - $url =~ s!^\Q$min_url\E(/|$)!!; - $url = join_paths($url, $old_path); - $self->path($url); - $url = $min_url; - } - } - my $orig_url; - if (!$existing) { - # verify that we aren't overwriting anything: - $orig_url = eval { - command_oneline('config', '--get', - "svn-remote.$self->{repo_id}.url") - }; - if ($orig_url && ($orig_url ne $url)) { - die "svn-remote.$self->{repo_id}.url already set: ", - "$orig_url\nwanted to set to: $url\n"; - } - } - my ($xrepo_id, $xpath) = find_ref($self->refname); - if (!$no_write && defined $xpath) { - die "svn-remote.$xrepo_id.fetch already set to track ", - "$xpath:", $self->refname, "\n"; - } - unless ($no_write) { - command_noisy('config', - "svn-remote.$self->{repo_id}.url", $url); - my $path = $self->path; - $path =~ s{^/}{}; - $path =~ s{%([0-9A-F]{2})}{chr hex($1)}ieg; - $self->path($path); - command_noisy('config', '--add', - "svn-remote.$self->{repo_id}.fetch", - $self->path.":".$self->refname); - } - $self->url($url); -} - -sub find_by_url { # repos_root and, path are optional - my ($class, $full_url, $repos_root, $path) = @_; - - $full_url = canonicalize_url($full_url); - - return undef unless defined $full_url; - remove_username($full_url); - remove_username($repos_root) if defined $repos_root; - my $remotes = read_all_remotes(); - if (defined $full_url && defined $repos_root && !defined $path) { - $path = $full_url; - $path =~ s#^\Q$repos_root\E(?:/|$)##; - } - foreach my $repo_id (keys %$remotes) { - my $u = $remotes->{$repo_id}->{url} or next; - remove_username($u); - next if defined $repos_root && $repos_root ne $u; - - my $fetch = $remotes->{$repo_id}->{fetch} || {}; - foreach my $t (qw/branches tags/) { - foreach my $globspec (@{$remotes->{$repo_id}->{$t}}) { - resolve_local_globs($u, $fetch, $globspec); - } - } - my $p = $path; - my $rwr = rewrite_root({repo_id => $repo_id}); - my $svm = $remotes->{$repo_id}->{svm} - if defined $remotes->{$repo_id}->{svm}; - unless (defined $p) { - $p = $full_url; - my $z = $u; - my $prefix = ''; - if ($rwr) { - $z = $rwr; - remove_username($z); - } elsif (defined $svm) { - $z = $svm->{source}; - $prefix = $svm->{replace}; - $prefix =~ s#^\Q$u\E(?:/|$)##; - $prefix =~ s#/$##; - } - $p =~ s#^\Q$z\E(?:/|$)#$prefix# or next; - } - - # remote fetch paths are not URI escaped. Decode ours - # so they match - $p = uri_decode($p); - - foreach my $f (keys %$fetch) { - next if $f ne $p; - return Git::SVN->new($fetch->{$f}, $repo_id, $f); - } - } - undef; -} - -sub init { - my ($class, $url, $path, $repo_id, $ref_id, $no_write) = @_; - my $self = _new($class, $repo_id, $ref_id, $path); - if (defined $url) { - $self->init_remote_config($url, $no_write); - } - $self; -} - -sub find_ref { - my ($ref_id) = @_; - foreach (command(qw/config -l/)) { - next unless m!^svn-remote\.(.+)\.fetch= - \s*(.*?)\s*:\s*(.+?)\s*$!x; - my ($repo_id, $path, $ref) = ($1, $2, $3); - if ($ref eq $ref_id) { - $path = '' if ($path =~ m#^\./?#); - return ($repo_id, $path); - } - } - (undef, undef, undef); -} - -sub new { - my ($class, $ref_id, $repo_id, $path) = @_; - if (defined $ref_id && !defined $repo_id && !defined $path) { - ($repo_id, $path) = find_ref($ref_id); - if (!defined $repo_id) { - die "Could not find a \"svn-remote.*.fetch\" key ", - "in the repository configuration matching: ", - "$ref_id\n"; - } - } - my $self = _new($class, $repo_id, $ref_id, $path); - if (!defined $self->path || !length $self->path) { - my $fetch = command_oneline('config', '--get', - "svn-remote.$repo_id.fetch", - ":$ref_id\$") or - die "Failed to read \"svn-remote.$repo_id.fetch\" ", - "\":$ref_id\$\" in config\n"; - my($path) = split(/\s*:\s*/, $fetch); - $self->path($path); - } - { - my $path = $self->path; - $path =~ s{\A/}{}; - $path =~ s{/\z}{}; - $self->path($path); - } - my $url = command_oneline('config', '--get', - "svn-remote.$repo_id.url") or - die "Failed to read \"svn-remote.$repo_id.url\" in config\n"; - $self->url($url); - $self->{pushurl} = eval { command_oneline('config', '--get', - "svn-remote.$repo_id.pushurl") }; - $self->rebuild; - $self; -} - -sub refname { - my ($refname) = $_[0]->{ref_id} ; - - # It cannot end with a slash /, we'll throw up on this because - # SVN can't have directories with a slash in their name, either: - if ($refname =~ m{/$}) { - die "ref: '$refname' ends with a trailing slash; this is ", - "not permitted by git or Subversion\n"; - } - - # It cannot have ASCII control character space, tilde ~, caret ^, - # colon :, question-mark ?, asterisk *, space, or open bracket [ - # anywhere. - # - # Additionally, % must be escaped because it is used for escaping - # and we want our escaped refname to be reversible - $refname =~ s{([ \%~\^:\?\*\[\t\\])}{sprintf('%%%02X',ord($1))}eg; - - # no slash-separated component can begin with a dot . - # /.* becomes /%2E* - $refname =~ s{/\.}{/%2E}g; - - # It cannot have two consecutive dots .. anywhere - # .. becomes %2E%2E - $refname =~ s{\.\.}{%2E%2E}g; - - # trailing dots and .lock are not allowed - # .$ becomes %2E and .lock becomes %2Elock - $refname =~ s{\.(?=$|lock$)}{%2E}; - - # the sequence @{ is used to access the reflog - # @{ becomes %40{ - $refname =~ s{\@\{}{%40\{}g; - - return $refname; -} - -sub desanitize_refname { - my ($refname) = @_; - $refname =~ s{%(?:([0-9A-F]{2}))}{chr hex($1)}eg; - return $refname; -} - -sub svm_uuid { - my ($self) = @_; - return $self->{svm}->{uuid} if $self->svm; - $self->ra; - unless ($self->{svm}) { - die "SVM UUID not cached, and reading remotely failed\n"; - } - $self->{svm}->{uuid}; -} - -sub svm { - my ($self) = @_; - return $self->{svm} if $self->{svm}; - my $svm; - # see if we have it in our config, first: - eval { - my $section = "svn-remote.$self->{repo_id}"; - $svm = { - source => tmp_config('--get', "$section.svm-source"), - uuid => tmp_config('--get', "$section.svm-uuid"), - replace => tmp_config('--get', "$section.svm-replace"), - } - }; - if ($svm && $svm->{source} && $svm->{uuid} && $svm->{replace}) { - $self->{svm} = $svm; - } - $self->{svm}; -} - -sub _set_svm_vars { - my ($self, $ra) = @_; - return $ra if $self->svm; - - my @err = ( "useSvmProps set, but failed to read SVM properties\n", - "(svm:source, svm:uuid) ", - "from the following URLs:\n" ); - sub read_svm_props { - my ($self, $ra, $path, $r) = @_; - my $props = ($ra->get_dir($path, $r))[2]; - my $src = $props->{'svm:source'}; - my $uuid = $props->{'svm:uuid'}; - return undef if (!$src || !$uuid); - - chomp($src, $uuid); - - $uuid =~ m{^[0-9a-f\-]{30,}$}i - or die "doesn't look right - svm:uuid is '$uuid'\n"; - - # the '!' is used to mark the repos_root!/relative/path - $src =~ s{/?!/?}{/}; - $src =~ s{/+$}{}; # no trailing slashes please - # username is of no interest - $src =~ s{(^[a-z\+]*://)[^/@]*@}{$1}; - - my $replace = add_path_to_url($ra->url, $path); - - my $section = "svn-remote.$self->{repo_id}"; - tmp_config("$section.svm-source", $src); - tmp_config("$section.svm-replace", $replace); - tmp_config("$section.svm-uuid", $uuid); - $self->{svm} = { - source => $src, - uuid => $uuid, - replace => $replace - }; - } - - my $r = $ra->get_latest_revnum; - my $path = $self->path; - my %tried; - while (length $path) { - my $try = add_path_to_url($self->url, $path); - unless ($tried{$try}) { - return $ra if $self->read_svm_props($ra, $path, $r); - $tried{$try} = 1; - } - $path =~ s#/?[^/]+$##; - } - die "Path: '$path' should be ''\n" if $path ne ''; - return $ra if $self->read_svm_props($ra, $path, $r); - $tried{ add_path_to_url($self->url, $path) } = 1; - - if ($ra->{repos_root} eq $self->url) { - die @err, (map { " $_\n" } keys %tried), "\n"; - } - - # nope, make sure we're connected to the repository root: - my $ok; - my @tried_b; - $path = $ra->{svn_path}; - $ra = Git::SVN::Ra->new($ra->{repos_root}); - while (length $path) { - my $try = add_path_to_url($ra->url, $path); - unless ($tried{$try}) { - $ok = $self->read_svm_props($ra, $path, $r); - last if $ok; - $tried{$try} = 1; - } - $path =~ s#/?[^/]+$##; - } - die "Path: '$path' should be ''\n" if $path ne ''; - $ok ||= $self->read_svm_props($ra, $path, $r); - $tried{ add_path_to_url($ra->url, $path) } = 1; - if (!$ok) { - die @err, (map { " $_\n" } keys %tried), "\n"; - } - Git::SVN::Ra->new($self->url); -} - -sub svnsync { - my ($self) = @_; - return $self->{svnsync} if $self->{svnsync}; - - if ($self->no_metadata) { - die "Can't have both 'noMetadata' and ", - "'useSvnsyncProps' options set!\n"; - } - if ($self->rewrite_root) { - die "Can't have both 'useSvnsyncProps' and 'rewriteRoot' ", - "options set!\n"; - } - if ($self->rewrite_uuid) { - die "Can't have both 'useSvnsyncProps' and 'rewriteUUID' ", - "options set!\n"; - } - - my $svnsync; - # see if we have it in our config, first: - eval { - my $section = "svn-remote.$self->{repo_id}"; - - my $url = tmp_config('--get', "$section.svnsync-url"); - ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or - die "doesn't look right - svn:sync-from-url is '$url'\n"; - - my $uuid = tmp_config('--get', "$section.svnsync-uuid"); - ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}i) or - die "doesn't look right - svn:sync-from-uuid is '$uuid'\n"; - - $svnsync = { url => $url, uuid => $uuid } - }; - if ($svnsync && $svnsync->{url} && $svnsync->{uuid}) { - return $self->{svnsync} = $svnsync; - } - - my $err = "useSvnsyncProps set, but failed to read " . - "svnsync property: svn:sync-from-"; - my $rp = $self->ra->rev_proplist(0); - - my $url = $rp->{'svn:sync-from-url'} or die $err . "url\n"; - ($url) = ($url =~ m{^([a-z\+]+://\S+)$}) or - die "doesn't look right - svn:sync-from-url is '$url'\n"; - - my $uuid = $rp->{'svn:sync-from-uuid'} or die $err . "uuid\n"; - ($uuid) = ($uuid =~ m{^([0-9a-f\-]{30,})$}i) or - die "doesn't look right - svn:sync-from-uuid is '$uuid'\n"; - - my $section = "svn-remote.$self->{repo_id}"; - tmp_config('--add', "$section.svnsync-uuid", $uuid); - tmp_config('--add', "$section.svnsync-url", $url); - return $self->{svnsync} = { url => $url, uuid => $uuid }; -} - -# this allows us to memoize our SVN::Ra UUID locally and avoid a -# remote lookup (useful for 'git svn log'). -sub ra_uuid { - my ($self) = @_; - unless ($self->{ra_uuid}) { - my $key = "svn-remote.$self->{repo_id}.uuid"; - my $uuid = eval { tmp_config('--get', $key) }; - if (!$@ && $uuid && $uuid =~ /^([a-f\d\-]{30,})$/i) { - $self->{ra_uuid} = $uuid; - } else { - die "ra_uuid called without URL\n" unless $self->url; - $self->{ra_uuid} = $self->ra->get_uuid; - tmp_config('--add', $key, $self->{ra_uuid}); - } - } - $self->{ra_uuid}; -} - -sub _set_repos_root { - my ($self, $repos_root) = @_; - my $k = "svn-remote.$self->{repo_id}.reposRoot"; - $repos_root ||= $self->ra->{repos_root}; - tmp_config($k, $repos_root); - $repos_root; -} - -sub repos_root { - my ($self) = @_; - my $k = "svn-remote.$self->{repo_id}.reposRoot"; - eval { tmp_config('--get', $k) } || $self->_set_repos_root; -} - -sub ra { - my ($self) = shift; - my $ra = Git::SVN::Ra->new($self->url); - $self->_set_repos_root($ra->{repos_root}); - if ($self->use_svm_props && !$self->{svm}) { - if ($self->no_metadata) { - die "Can't have both 'noMetadata' and ", - "'useSvmProps' options set!\n"; - } elsif ($self->use_svnsync_props) { - die "Can't have both 'useSvnsyncProps' and ", - "'useSvmProps' options set!\n"; - } - $ra = $self->_set_svm_vars($ra); - $self->{-want_revprops} = 1; - } - $ra; -} - -# prop_walk(PATH, REV, SUB) -# ------------------------- -# Recursively traverse PATH at revision REV and invoke SUB for each -# directory that contains a SVN property. SUB will be invoked as -# follows: &SUB(gs, path, props); where `gs' is this instance of -# Git::SVN, `path' the path to the directory where the properties -# `props' were found. The `path' will be relative to point of checkout, -# that is, if url://repo/trunk is the current Git branch, and that -# directory contains a sub-directory `d', SUB will be invoked with `/d/' -# as `path' (note the trailing `/'). -sub prop_walk { - my ($self, $path, $rev, $sub) = @_; - - $path =~ s#^/##; - my ($dirent, undef, $props) = $self->ra->get_dir($path, $rev); - $path =~ s#^/*#/#g; - my $p = $path; - # Strip the irrelevant part of the path. - $p =~ s#^/+\Q@{[$self->path]}\E(/|$)#/#; - # Ensure the path is terminated by a `/'. - $p =~ s#/*$#/#; - - # The properties contain all the internal SVN stuff nobody - # (usually) cares about. - my $interesting_props = 0; - foreach (keys %{$props}) { - # If it doesn't start with `svn:', it must be a - # user-defined property. - ++$interesting_props and next if $_ !~ /^svn:/; - # FIXME: Fragile, if SVN adds new public properties, - # this needs to be updated. - ++$interesting_props if /^svn:(?:ignore|keywords|executable - |eol-style|mime-type - |externals|needs-lock)$/x; - } - &$sub($self, $p, $props) if $interesting_props; - - foreach (sort keys %$dirent) { - next if $dirent->{$_}->{kind} != $SVN::Node::dir; - $self->prop_walk($self->path . $p . $_, $rev, $sub); - } -} - -sub last_rev { ($_[0]->last_rev_commit)[0] } -sub last_commit { ($_[0]->last_rev_commit)[1] } - -# returns the newest SVN revision number and newest commit SHA1 -sub last_rev_commit { - my ($self) = @_; - if (defined $self->{last_rev} && defined $self->{last_commit}) { - return ($self->{last_rev}, $self->{last_commit}); - } - my $c = ::verify_ref($self->refname.'^0'); - if ($c && !$self->use_svm_props && !$self->no_metadata) { - my $rev = (::cmt_metadata($c))[1]; - if (defined $rev) { - ($self->{last_rev}, $self->{last_commit}) = ($rev, $c); - return ($rev, $c); - } - } - my $map_path = $self->map_path; - unless (-e $map_path) { - ($self->{last_rev}, $self->{last_commit}) = (undef, undef); - return (undef, undef); - } - my ($rev, $commit) = $self->rev_map_max(1); - ($self->{last_rev}, $self->{last_commit}) = ($rev, $commit); - return ($rev, $commit); -} - -sub get_fetch_range { - my ($self, $min, $max) = @_; - $max ||= $self->ra->get_latest_revnum; - $min ||= $self->rev_map_max; - (++$min, $max); -} - -sub svn_dir { - command_oneline(qw(rev-parse --git-path svn)); -} - -sub tmp_config { - my (@args) = @_; - my $svn_dir = svn_dir(); - my $old_def_config = "$svn_dir/config"; - my $config = "$svn_dir/.metadata"; - if (! -f $config && -f $old_def_config) { - rename $old_def_config, $config or - die "Failed rename $old_def_config => $config: $!\n"; - } - my $old_config = $ENV{GIT_CONFIG}; - $ENV{GIT_CONFIG} = $config; - $@ = undef; - my @ret = eval { - unless (-f $config) { - mkfile($config); - open my $fh, '>', $config or - die "Can't open $config: $!\n"; - print $fh "; This file is used internally by ", - "git-svn\n" or die - "Couldn't write to $config: $!\n"; - print $fh "; You should not have to edit it\n" or - die "Couldn't write to $config: $!\n"; - close $fh or die "Couldn't close $config: $!\n"; - } - command('config', @args); - }; - my $err = $@; - if (defined $old_config) { - $ENV{GIT_CONFIG} = $old_config; - } else { - delete $ENV{GIT_CONFIG}; - } - die $err if $err; - wantarray ? @ret : $ret[0]; -} - -sub tmp_index_do { - my ($self, $sub) = @_; - my $old_index = $ENV{GIT_INDEX_FILE}; - $ENV{GIT_INDEX_FILE} = $self->{index}; - $@ = undef; - my @ret = eval { - my ($dir, $base) = ($self->{index} =~ m#^(.*?)/?([^/]+)$#); - mkpath([$dir]) unless -d $dir; - &$sub; - }; - my $err = $@; - if (defined $old_index) { - $ENV{GIT_INDEX_FILE} = $old_index; - } else { - delete $ENV{GIT_INDEX_FILE}; - } - die $err if $err; - wantarray ? @ret : $ret[0]; -} - -sub assert_index_clean { - my ($self, $treeish) = @_; - - $self->tmp_index_do(sub { - command_noisy('read-tree', $treeish) unless -e $self->{index}; - my $x = command_oneline('write-tree'); - my ($y) = (command(qw/cat-file commit/, $treeish) =~ - /^tree ($::sha1)/mo); - return if $y eq $x; - - warn "Index mismatch: $y != $x\nrereading $treeish\n"; - unlink $self->{index} or die "unlink $self->{index}: $!\n"; - command_noisy('read-tree', $treeish); - $x = command_oneline('write-tree'); - if ($y ne $x) { - fatal "trees ($treeish) $y != $x\n", - "Something is seriously wrong..."; - } - }); -} - -sub get_commit_parents { - my ($self, $log_entry) = @_; - my (%seen, @ret, @tmp); - # legacy support for 'set-tree'; this is only used by set_tree_cb: - if (my $ip = $self->{inject_parents}) { - if (my $commit = delete $ip->{$log_entry->{revision}}) { - push @tmp, $commit; - } - } - if (my $cur = ::verify_ref($self->refname.'^0')) { - push @tmp, $cur; - } - if (my $ipd = $self->{inject_parents_dcommit}) { - if (my $commit = delete $ipd->{$log_entry->{revision}}) { - push @tmp, @$commit; - } - } - push @tmp, $_ foreach (@{$log_entry->{parents}}, @tmp); - while (my $p = shift @tmp) { - next if $seen{$p}; - $seen{$p} = 1; - push @ret, $p; - } - @ret; -} - -sub rewrite_root { - my ($self) = @_; - return $self->{-rewrite_root} if exists $self->{-rewrite_root}; - my $k = "svn-remote.$self->{repo_id}.rewriteRoot"; - my $rwr = eval { command_oneline(qw/config --get/, $k) }; - if ($rwr) { - $rwr =~ s#/+$##; - if ($rwr !~ m#^[a-z\+]+://#) { - die "$rwr is not a valid URL (key: $k)\n"; - } - } - $self->{-rewrite_root} = $rwr; -} - -sub rewrite_uuid { - my ($self) = @_; - return $self->{-rewrite_uuid} if exists $self->{-rewrite_uuid}; - my $k = "svn-remote.$self->{repo_id}.rewriteUUID"; - my $rwid = eval { command_oneline(qw/config --get/, $k) }; - if ($rwid) { - $rwid =~ s#/+$##; - if ($rwid !~ m#^[a-f0-9]{8}-(?:[a-f0-9]{4}-){3}[a-f0-9]{12}$#) { - die "$rwid is not a valid UUID (key: $k)\n"; - } - } - $self->{-rewrite_uuid} = $rwid; -} - -sub metadata_url { - my ($self) = @_; - my $url = $self->rewrite_root || $self->url; - return canonicalize_url( add_path_to_url( $url, $self->path ) ); -} - -sub full_url { - my ($self) = @_; - return canonicalize_url( add_path_to_url( $self->url, $self->path ) ); -} - -sub full_pushurl { - my ($self) = @_; - if ($self->{pushurl}) { - return canonicalize_url( add_path_to_url( $self->{pushurl}, $self->path ) ); - } else { - return $self->full_url; - } -} - -sub set_commit_header_env { - my ($log_entry) = @_; - my %env; - foreach my $ned (qw/NAME EMAIL DATE/) { - foreach my $ac (qw/AUTHOR COMMITTER/) { - $env{"GIT_${ac}_${ned}"} = $ENV{"GIT_${ac}_${ned}"}; - } - } - - $ENV{GIT_AUTHOR_NAME} = $log_entry->{name}; - $ENV{GIT_AUTHOR_EMAIL} = $log_entry->{email}; - $ENV{GIT_AUTHOR_DATE} = $ENV{GIT_COMMITTER_DATE} = $log_entry->{date}; - - $ENV{GIT_COMMITTER_NAME} = (defined $log_entry->{commit_name}) - ? $log_entry->{commit_name} - : $log_entry->{name}; - $ENV{GIT_COMMITTER_EMAIL} = (defined $log_entry->{commit_email}) - ? $log_entry->{commit_email} - : $log_entry->{email}; - \%env; -} - -sub restore_commit_header_env { - my ($env) = @_; - foreach my $ned (qw/NAME EMAIL DATE/) { - foreach my $ac (qw/AUTHOR COMMITTER/) { - my $k = "GIT_${ac}_${ned}"; - if (defined $env->{$k}) { - $ENV{$k} = $env->{$k}; - } else { - delete $ENV{$k}; - } - } - } -} - -sub gc { - command_noisy('gc', '--auto'); -}; - -sub do_git_commit { - my ($self, $log_entry) = @_; - my $lr = $self->last_rev; - if (defined $lr && $lr >= $log_entry->{revision}) { - die "Last fetched revision of ", $self->refname, - " was r$lr, but we are about to fetch: ", - "r$log_entry->{revision}!\n"; - } - if (my $c = $self->rev_map_get($log_entry->{revision})) { - croak "$log_entry->{revision} = $c already exists! ", - "Why are we refetching it?\n"; - } - my $old_env = set_commit_header_env($log_entry); - my $tree = $log_entry->{tree}; - if (!defined $tree) { - $tree = $self->tmp_index_do(sub { - command_oneline('write-tree') }); - } - die "Tree is not a valid sha1: $tree\n" if $tree !~ /^$::sha1$/o; - - my @exec = ('git', 'commit-tree', $tree); - foreach ($self->get_commit_parents($log_entry)) { - push @exec, '-p', $_; - } - defined(my $pid = open3(my $msg_fh, my $out_fh, '>&STDERR', @exec)) - or croak $!; - binmode $msg_fh; - - # we always get UTF-8 from SVN, but we may want our commits in - # a different encoding. - if (my $enc = Git::config('i18n.commitencoding')) { - require Encode; - Encode::from_to($log_entry->{log}, 'UTF-8', $enc); - } - print $msg_fh $log_entry->{log} or croak $!; - restore_commit_header_env($old_env); - unless ($self->no_metadata) { - print $msg_fh "\ngit-svn-id: $log_entry->{metadata}\n" - or croak $!; - } - $msg_fh->flush == 0 or croak $!; - close $msg_fh or croak $!; - chomp(my $commit = do { local $/; <$out_fh> }); - close $out_fh or croak $!; - waitpid $pid, 0; - croak $? if $?; - if ($commit !~ /^$::sha1$/o) { - die "Failed to commit, invalid sha1: $commit\n"; - } - - $self->rev_map_set($log_entry->{revision}, $commit, 1); - - $self->{last_rev} = $log_entry->{revision}; - $self->{last_commit} = $commit; - print "r$log_entry->{revision}" unless $::_q > 1; - if (defined $log_entry->{svm_revision}) { - print " (\@$log_entry->{svm_revision})" unless $::_q > 1; - $self->rev_map_set($log_entry->{svm_revision}, $commit, - 0, $self->svm_uuid); - } - print " = $commit ($self->{ref_id})\n" unless $::_q > 1; - if (--$_gc_nr == 0) { - $_gc_nr = $_gc_period; - gc(); - } - return $commit; -} - -sub match_paths { - my ($self, $paths, $r) = @_; - return 1 if $self->path eq ''; - if (my $path = $paths->{"/".$self->path}) { - return ($path->{action} eq 'D') ? 0 : 1; - } - $self->{path_regex} ||= qr{^/\Q@{[$self->path]}\E/}; - if (grep /$self->{path_regex}/, keys %$paths) { - return 1; - } - my $c = ''; - foreach (split m#/#, $self->path) { - $c .= "/$_"; - next unless ($paths->{$c} && - ($paths->{$c}->{action} =~ /^[AR]$/)); - if ($self->ra->check_path($self->path, $r) == - $SVN::Node::dir) { - return 1; - } - } - return 0; -} - -sub find_parent_branch { - my ($self, $paths, $rev) = @_; - return undef unless $self->follow_parent; - unless (defined $paths) { - my $err_handler = $SVN::Error::handler; - $SVN::Error::handler = \&Git::SVN::Ra::skip_unknown_revs; - $self->ra->get_log([$self->path], $rev, $rev, 0, 1, 1, - sub { $paths = $_[0] }); - $SVN::Error::handler = $err_handler; - } - return undef unless defined $paths; - - # look for a parent from another branch: - my @b_path_components = split m#/#, $self->path; - my @a_path_components; - my $i; - while (@b_path_components) { - $i = $paths->{'/'.join('/', @b_path_components)}; - last if $i && defined $i->{copyfrom_path}; - unshift(@a_path_components, pop(@b_path_components)); - } - return undef unless defined $i && defined $i->{copyfrom_path}; - my $branch_from = $i->{copyfrom_path}; - if (@a_path_components) { - print STDERR "branch_from: $branch_from => "; - $branch_from .= '/'.join('/', @a_path_components); - print STDERR $branch_from, "\n"; - } - my $r = $i->{copyfrom_rev}; - my $repos_root = $self->ra->{repos_root}; - my $url = $self->ra->url; - my $new_url = canonicalize_url( add_path_to_url( $url, $branch_from ) ); - print STDERR "Found possible branch point: ", - "$new_url => ", $self->full_url, ", $r\n" - unless $::_q > 1; - $branch_from =~ s#^/##; - my $gs = $self->other_gs($new_url, $url, - $branch_from, $r, $self->{ref_id}); - my ($r0, $parent) = $gs->find_rev_before($r, 1); - { - my ($base, $head); - if (!defined $r0 || !defined $parent) { - ($base, $head) = parse_revision_argument(0, $r); - } else { - if ($r0 < $r) { - $gs->ra->get_log([$gs->path], $r0 + 1, $r, 1, - 0, 1, sub { $base = $_[1] - 1 }); - } - } - if (defined $base && $base <= $r) { - $gs->fetch($base, $r); - } - ($r0, $parent) = $gs->find_rev_before($r, 1); - } - if (defined $r0 && defined $parent) { - print STDERR "Found branch parent: ($self->{ref_id}) $parent\n" - unless $::_q > 1; - my $ed; - if ($self->ra->can_do_switch) { - $self->assert_index_clean($parent); - print STDERR "Following parent with do_switch\n" - unless $::_q > 1; - # do_switch works with svn/trunk >= r22312, but that - # is not included with SVN 1.4.3 (the latest version - # at the moment), so we can't rely on it - $self->{last_rev} = $r0; - $self->{last_commit} = $parent; - $ed = Git::SVN::Fetcher->new($self, $gs->path); - $gs->ra->gs_do_switch($r0, $rev, $gs, - $self->full_url, $ed) - or die "SVN connection failed somewhere...\n"; - } elsif ($self->ra->trees_match($new_url, $r0, - $self->full_url, $rev)) { - print STDERR "Trees match:\n", - " $new_url\@$r0\n", - " ${\$self->full_url}\@$rev\n", - "Following parent with no changes\n" - unless $::_q > 1; - $self->tmp_index_do(sub { - command_noisy('read-tree', $parent); - }); - $self->{last_commit} = $parent; - } else { - print STDERR "Following parent with do_update\n" - unless $::_q > 1; - $ed = Git::SVN::Fetcher->new($self); - $self->ra->gs_do_update($rev, $rev, $self, $ed) - or die "SVN connection failed somewhere...\n"; - } - print STDERR "Successfully followed parent\n" unless $::_q > 1; - return $self->make_log_entry($rev, [$parent], $ed, $r0, $branch_from); - } - return undef; -} - -sub do_fetch { - my ($self, $paths, $rev) = @_; - my $ed; - my ($last_rev, @parents); - if (my $lc = $self->last_commit) { - # we can have a branch that was deleted, then re-added - # under the same name but copied from another path, in - # which case we'll have multiple parents (we don't - # want to break the original ref or lose copypath info): - if (my $log_entry = $self->find_parent_branch($paths, $rev)) { - push @{$log_entry->{parents}}, $lc; - return $log_entry; - } - $ed = Git::SVN::Fetcher->new($self); - $last_rev = $self->{last_rev}; - $ed->{c} = $lc; - @parents = ($lc); - } else { - $last_rev = $rev; - if (my $log_entry = $self->find_parent_branch($paths, $rev)) { - return $log_entry; - } - $ed = Git::SVN::Fetcher->new($self); - } - unless ($self->ra->gs_do_update($last_rev, $rev, $self, $ed)) { - die "SVN connection failed somewhere...\n"; - } - $self->make_log_entry($rev, \@parents, $ed, $last_rev, $self->path); -} - -sub mkemptydirs { - my ($self, $r) = @_; - - # add/remove/collect a paths table - # - # Paths are split into a tree of nodes, stored as a hash of hashes. - # - # Each node contains a 'path' entry for the path (if any) associated - # with that node and a 'children' entry for any nodes under that - # location. - # - # Removing a path requires a hash lookup for each component then - # dropping that node (and anything under it), which is substantially - # faster than a grep slice into a single hash of paths for large - # numbers of paths. - # - # For a large (200K) number of empty_dir directives this reduces - # scanning time to 3 seconds vs 10 minutes for grep+delete on a single - # hash of paths. - sub add_path { - my ($paths_table, $path) = @_; - my $node_ref; - - foreach my $x (split('/', $path)) { - if (!exists($paths_table->{$x})) { - $paths_table->{$x} = { children => {} }; - } - - $node_ref = $paths_table->{$x}; - $paths_table = $paths_table->{$x}->{children}; - } - - $node_ref->{path} = $path; - } - - sub remove_path { - my ($paths_table, $path) = @_; - my $nodes_ref; - my $node_name; - - foreach my $x (split('/', $path)) { - if (!exists($paths_table->{$x})) { - return; - } - - $nodes_ref = $paths_table; - $node_name = $x; - - $paths_table = $paths_table->{$x}->{children}; - } - - delete($nodes_ref->{$node_name}); - } - - sub collect_paths { - my ($paths_table, $paths_ref) = @_; - - foreach my $v (values %$paths_table) { - my $p = $v->{path}; - my $c = $v->{children}; - - collect_paths($c, $paths_ref); - - if (defined($p)) { - push(@$paths_ref, $p); - } - } - } - - sub scan { - my ($r, $paths_table, $line) = @_; - if (defined $r && $line =~ /^r(\d+)$/) { - return 0 if $1 > $r; - } elsif ($line =~ /^ \+empty_dir: (.+)$/) { - add_path($paths_table, $1); - } elsif ($line =~ /^ \-empty_dir: (.+)$/) { - remove_path($paths_table, $1); - } - 1; # continue - }; - - my @empty_dirs; - my %paths_table; - - my $gz_file = "$self->{dir}/unhandled.log.gz"; - if (-f $gz_file) { - if (!can_compress()) { - warn "Compress::Zlib could not be found; ", - "empty directories in $gz_file will not be read\n"; - } else { - my $gz = Compress::Zlib::gzopen($gz_file, "rb") or - die "Unable to open $gz_file: $!\n"; - my $line; - while ($gz->gzreadline($line) > 0) { - scan($r, \%paths_table, $line) or last; - } - $gz->gzclose; - } - } - - if (open my $fh, '<', "$self->{dir}/unhandled.log") { - binmode $fh or croak "binmode: $!"; - while (<$fh>) { - scan($r, \%paths_table, $_) or last; - } - close $fh; - } - - collect_paths(\%paths_table, \@empty_dirs); - my $strip = qr/\A\Q@{[$self->path]}\E(?:\/|$)/; - foreach my $d (sort @empty_dirs) { - $d = uri_decode($d); - $d =~ s/$strip//; - next unless length($d); - next if -d $d; - if (-e $d) { - warn "$d exists but is not a directory\n"; - } else { - print "creating empty directory: $d\n"; - mkpath([$d]); - } - } -} - -sub get_untracked { - my ($self, $ed) = @_; - my @out; - my $h = $ed->{empty}; - foreach (sort keys %$h) { - my $act = $h->{$_} ? '+empty_dir' : '-empty_dir'; - push @out, " $act: " . uri_encode($_); - warn "W: $act: $_\n"; - } - foreach my $t (qw/dir_prop file_prop/) { - $h = $ed->{$t} or next; - foreach my $path (sort keys %$h) { - my $ppath = $path eq '' ? '.' : $path; - foreach my $prop (sort keys %{$h->{$path}}) { - next if $SKIP_PROP{$prop}; - my $v = $h->{$path}->{$prop}; - my $t_ppath_prop = "$t: " . - uri_encode($ppath) . ' ' . - uri_encode($prop); - if (defined $v) { - push @out, " +$t_ppath_prop " . - uri_encode($v); - } else { - push @out, " -$t_ppath_prop"; - } - } - } - } - foreach my $t (qw/absent_file absent_directory/) { - $h = $ed->{$t} or next; - foreach my $parent (sort keys %$h) { - foreach my $path (sort @{$h->{$parent}}) { - push @out, " $t: " . - uri_encode("$parent/$path"); - warn "W: $t: $parent/$path ", - "Insufficient permissions?\n"; - } - } - } - \@out; -} - -# parse_svn_date(DATE) -# -------------------- -# Given a date (in UTC) from Subversion, return a string in the format -# "<TZ Offset> <local date/time>" that Git will use. -# -# By default the parsed date will be in UTC; if $Git::SVN::_localtime -# is true we'll convert it to the local timezone instead. -sub parse_svn_date { - my $date = shift || return '+0000 1970-01-01 00:00:00'; - my ($Y,$m,$d,$H,$M,$S) = ($date =~ /^(\d{4})\-(\d\d)\-(\d\d)T - (\d\d?)\:(\d\d)\:(\d\d)\.\d*Z$/x) or - croak "Unable to parse date: $date\n"; - my $parsed_date; # Set next. - - if ($Git::SVN::_localtime) { - # Translate the Subversion datetime to an epoch time. - # Begin by switching ourselves to $date's timezone, UTC. - my $old_env_TZ = $ENV{TZ}; - $ENV{TZ} = 'UTC'; - - my $epoch_in_UTC = - Time::Local::timelocal($S, $M, $H, $d, $m - 1, $Y); - - # Determine our local timezone (including DST) at the - # time of $epoch_in_UTC. $Git::SVN::Log::TZ stored the - # value of TZ, if any, at the time we were run. - if (defined $Git::SVN::Log::TZ) { - $ENV{TZ} = $Git::SVN::Log::TZ; - } else { - delete $ENV{TZ}; - } - - my $our_TZ = get_tz_offset($epoch_in_UTC); - - # This converts $epoch_in_UTC into our local timezone. - my ($sec, $min, $hour, $mday, $mon, $year, - $wday, $yday, $isdst) = localtime($epoch_in_UTC); - - $parsed_date = sprintf('%s %04d-%02d-%02d %02d:%02d:%02d', - $our_TZ, $year + 1900, $mon + 1, - $mday, $hour, $min, $sec); - - # Reset us to the timezone in effect when we entered - # this routine. - if (defined $old_env_TZ) { - $ENV{TZ} = $old_env_TZ; - } else { - delete $ENV{TZ}; - } - } else { - $parsed_date = "+0000 $Y-$m-$d $H:$M:$S"; - } - - return $parsed_date; -} - -sub other_gs { - my ($self, $new_url, $url, - $branch_from, $r, $old_ref_id) = @_; - my $gs = Git::SVN->find_by_url($new_url, $url, $branch_from); - unless ($gs) { - my $ref_id = $old_ref_id; - $ref_id =~ s/\@\d+-*$//; - $ref_id .= "\@$r"; - # just grow a tail if we're not unique enough :x - $ref_id .= '-' while find_ref($ref_id); - my ($u, $p, $repo_id) = ($new_url, '', $ref_id); - if ($u =~ s#^\Q$url\E(/|$)##) { - $p = $u; - $u = $url; - $repo_id = $self->{repo_id}; - } - while (1) { - # It is possible to tag two different subdirectories at - # the same revision. If the url for an existing ref - # does not match, we must either find a ref with a - # matching url or create a new ref by growing a tail. - $gs = Git::SVN->init($u, $p, $repo_id, $ref_id, 1); - my (undef, $max_commit) = $gs->rev_map_max(1); - last if (!$max_commit); - my ($url) = ::cmt_metadata($max_commit); - last if ($url eq $gs->metadata_url); - $ref_id .= '-'; - } - print STDERR "Initializing parent: $ref_id\n" unless $::_q > 1; - } - $gs -} - -sub call_authors_prog { - my ($orig_author) = @_; - $orig_author = command_oneline('rev-parse', '--sq-quote', $orig_author); - my $author = `$::_authors_prog $orig_author`; - if ($? != 0) { - die "$::_authors_prog failed with exit code $?\n" - } - if ($author =~ /^\s*(.+?)\s*<(.*)>\s*$/) { - my ($name, $email) = ($1, $2); - return [$name, $email]; - } else { - die "Author: $orig_author: $::_authors_prog returned " - . "invalid author format: $author\n"; - } -} - -sub check_author { - my ($author) = @_; - if (!defined $author || length $author == 0) { - $author = '(no author)'; - } - if (!defined $::users{$author}) { - if (defined $::_authors_prog) { - $::users{$author} = call_authors_prog($author); - } elsif (defined $::_authors) { - die "Author: $author not defined in $::_authors file\n"; - } - } - $author; -} - -sub find_extra_svk_parents { - my ($self, $tickets, $parents) = @_; - # aha! svk:merge property changed... - my @tickets = split "\n", $tickets; - my @known_parents; - for my $ticket ( @tickets ) { - my ($uuid, $path, $rev) = split /:/, $ticket; - if ( $uuid eq $self->ra_uuid ) { - my $repos_root = $self->url; - my $branch_from = $path; - $branch_from =~ s{^/}{}; - my $gs = $self->other_gs(add_path_to_url( $repos_root, $branch_from ), - $repos_root, - $branch_from, - $rev, - $self->{ref_id}); - if ( my $commit = $gs->rev_map_get($rev, $uuid) ) { - # wahey! we found it, but it might be - # an old one (!) - push @known_parents, [ $rev, $commit ]; - } - } - } - # Ordering matters; highest-numbered commit merge tickets - # first, as they may account for later merge ticket additions - # or changes. - @known_parents = map {$_->[1]} sort {$b->[0] <=> $a->[0]} @known_parents; - for my $parent ( @known_parents ) { - my @cmd = ('rev-list', $parent, map { "^$_" } @$parents ); - my ($msg_fh, $ctx) = command_output_pipe(@cmd); - my $new; - while ( <$msg_fh> ) { - $new=1;last; - } - command_close_pipe($msg_fh, $ctx); - if ( $new ) { - print STDERR - "Found merge parent (svk:merge ticket): $parent\n"; - push @$parents, $parent; - } - } -} - -sub lookup_svn_merge { - my $uuid = shift; - my $url = shift; - my $source = shift; - my $revs = shift; - - my $path = $source; - $path =~ s{^/}{}; - my $gs = Git::SVN->find_by_url($url.$source, $url, $path); - if ( !$gs ) { - warn "Couldn't find revmap for $url$source\n"; - return; - } - my @ranges = split ",", $revs; - my ($tip, $tip_commit); - my @merged_commit_ranges; - # find the tip - for my $range ( @ranges ) { - if ($range =~ /[*]$/) { - warn "W: Ignoring partial merge in svn:mergeinfo " - ."dirprop: $source:$range\n"; - next; - } - my ($bottom, $top) = split "-", $range; - $top ||= $bottom; - my $bottom_commit = $gs->find_rev_after( $bottom, 1, $top ); - my $top_commit = $gs->find_rev_before( $top, 1, $bottom ); - - unless ($top_commit and $bottom_commit) { - warn "W: unknown path/rev in svn:mergeinfo " - ."dirprop: $source:$range\n"; - next; - } - - if (scalar(command('rev-parse', "$bottom_commit^@"))) { - push @merged_commit_ranges, - "$bottom_commit^..$top_commit"; - } else { - push @merged_commit_ranges, "$top_commit"; - } - - if ( !defined $tip or $top > $tip ) { - $tip = $top; - $tip_commit = $top_commit; - } - } - return ($tip_commit, @merged_commit_ranges); -} - -sub _rev_list { - my ($msg_fh, $ctx) = command_output_pipe( - "rev-list", @_, - ); - my @rv; - while ( <$msg_fh> ) { - chomp; - push @rv, $_; - } - command_close_pipe($msg_fh, $ctx); - @rv; -} - -sub check_cherry_pick2 { - my $base = shift; - my $tip = shift; - my $parents = shift; - my @ranges = @_; - my %commits = map { $_ => 1 } - _rev_list("--no-merges", $tip, "--not", $base, @$parents, "--"); - for my $range ( @ranges ) { - delete @commits{_rev_list($range, "--")}; - } - for my $commit (keys %commits) { - if (has_no_changes($commit)) { - delete $commits{$commit}; - } - } - my @k = (keys %commits); - return (scalar @k, $k[0]); -} - -sub has_no_changes { - my $commit = shift; - - my @revs = split / /, command_oneline( - qw(rev-list --parents -1 -m), $commit); - - # Commits with no parents, e.g. the start of a partial branch, - # have changes by definition. - return 1 if (@revs < 2); - - # Commits with multiple parents, e.g a merge, have no changes - # by definition. - return 0 if (@revs > 2); - - return (command_oneline("rev-parse", "$commit^{tree}") eq - command_oneline("rev-parse", "$commit~1^{tree}")); -} - -sub tie_for_persistent_memoization { - my $hash = shift; - my $path = shift; - - unless ($memo_backend) { - if (eval { require Git::SVN::Memoize::YAML; 1}) { - $memo_backend = 1; - } else { - require Memoize::Storable; - $memo_backend = -1; - } - } - - if ($memo_backend > 0) { - tie %$hash => 'Git::SVN::Memoize::YAML', "$path.yaml"; - } else { - # first verify that any existing file can actually be loaded - # (it may have been saved by an incompatible version) - my $db = "$path.db"; - if (-e $db) { - use Storable qw(retrieve); - - if (!eval { retrieve($db); 1 }) { - unlink $db or die "unlink $db failed: $!"; - } - } - tie %$hash => 'Memoize::Storable', $db, 'nstore'; - } -} - -# The GIT_DIR environment variable is not always set until after the command -# line arguments are processed, so we can't memoize in a BEGIN block. -{ - my $memoized = 0; - - sub memoize_svn_mergeinfo_functions { - return if $memoized; - $memoized = 1; - - my $cache_path = svn_dir() . '/.caches/'; - mkpath([$cache_path]) unless -d $cache_path; - - my %lookup_svn_merge_cache; - my %check_cherry_pick2_cache; - my %has_no_changes_cache; - - tie_for_persistent_memoization(\%lookup_svn_merge_cache, - "$cache_path/lookup_svn_merge"); - memoize 'lookup_svn_merge', - SCALAR_CACHE => 'FAULT', - LIST_CACHE => ['HASH' => \%lookup_svn_merge_cache], - ; - - tie_for_persistent_memoization(\%check_cherry_pick2_cache, - "$cache_path/check_cherry_pick2"); - memoize 'check_cherry_pick2', - SCALAR_CACHE => 'FAULT', - LIST_CACHE => ['HASH' => \%check_cherry_pick2_cache], - ; - - tie_for_persistent_memoization(\%has_no_changes_cache, - "$cache_path/has_no_changes"); - memoize 'has_no_changes', - SCALAR_CACHE => ['HASH' => \%has_no_changes_cache], - LIST_CACHE => 'FAULT', - ; - } - - sub unmemoize_svn_mergeinfo_functions { - return if not $memoized; - $memoized = 0; - - Memoize::unmemoize 'lookup_svn_merge'; - Memoize::unmemoize 'check_cherry_pick2'; - Memoize::unmemoize 'has_no_changes'; - } - - sub clear_memoized_mergeinfo_caches { - die "Only call this method in non-memoized context" if ($memoized); - - my $cache_path = svn_dir() . '/.caches/'; - return unless -d $cache_path; - - for my $cache_file (("$cache_path/lookup_svn_merge", - "$cache_path/check_cherry_pick", # old - "$cache_path/check_cherry_pick2", - "$cache_path/has_no_changes")) { - for my $suffix (qw(yaml db)) { - my $file = "$cache_file.$suffix"; - next unless -e $file; - unlink($file) or die "unlink($file) failed: $!\n"; - } - } - } - - - Memoize::memoize 'Git::SVN::repos_root'; -} - -END { - # Force cache writeout explicitly instead of waiting for - # global destruction to avoid segfault in Storable: - # http://rt.cpan.org/Public/Bug/Display.html?id=36087 - unmemoize_svn_mergeinfo_functions(); -} - -sub parents_exclude { - my $parents = shift; - my @commits = @_; - return unless @commits; - - my @excluded; - my $excluded; - do { - my @cmd = ('rev-list', "-1", @commits, "--not", @$parents ); - $excluded = command_oneline(@cmd); - if ( $excluded ) { - my @new; - my $found; - for my $commit ( @commits ) { - if ( $commit eq $excluded ) { - push @excluded, $commit; - $found++; - } - else { - push @new, $commit; - } - } - die "saw commit '$excluded' in rev-list output, " - ."but we didn't ask for that commit (wanted: @commits --not @$parents)" - unless $found; - @commits = @new; - } - } - while ($excluded and @commits); - - return @excluded; -} - -# Compute what's new in svn:mergeinfo. -sub mergeinfo_changes { - my ($self, $old_path, $old_rev, $path, $rev, $mergeinfo_prop) = @_; - my %minfo = map {split ":", $_ } split "\n", $mergeinfo_prop; - my $old_minfo = {}; - - my $ra = $self->ra; - # Give up if $old_path isn't in the repo. - # This is probably a merge on a subtree. - if ($ra->check_path($old_path, $old_rev) != $SVN::Node::dir) { - warn "W: ignoring svn:mergeinfo on $old_path, ", - "directory didn't exist in r$old_rev\n"; - return {}; - } - my (undef, undef, $props) = $ra->get_dir($old_path, $old_rev); - if (defined $props->{"svn:mergeinfo"}) { - my %omi = map {split ":", $_ } split "\n", - $props->{"svn:mergeinfo"}; - $old_minfo = \%omi; - } - - my %changes = (); - foreach my $p (keys %minfo) { - my $a = $old_minfo->{$p} || ""; - my $b = $minfo{$p}; - # Omit merged branches whose ranges lists are unchanged. - next if $a eq $b; - # Remove any common range list prefix. - ($a ^ $b) =~ /^[\0]*/; - my $common_prefix = rindex $b, ",", $+[0] - 1; - $changes{$p} = substr $b, $common_prefix + 1; - } - print STDERR "Checking svn:mergeinfo changes since r$old_rev: ", - scalar(keys %minfo), " sources, ", - scalar(keys %changes), " changed\n"; - - return \%changes; -} - -# note: this function should only be called if the various dirprops -# have actually changed -sub find_extra_svn_parents { - my ($self, $mergeinfo, $parents) = @_; - # aha! svk:merge property changed... - - memoize_svn_mergeinfo_functions(); - - # We first search for merged tips which are not in our - # history. Then, we figure out which git revisions are in - # that tip, but not this revision. If all of those revisions - # are now marked as merge, we can add the tip as a parent. - my @merges = sort keys %$mergeinfo; - my @merge_tips; - my $url = $self->url; - my $uuid = $self->ra_uuid; - my @all_ranges; - for my $merge ( @merges ) { - my ($tip_commit, @ranges) = - lookup_svn_merge( $uuid, $url, - $merge, $mergeinfo->{$merge} ); - unless (!$tip_commit or - grep { $_ eq $tip_commit } @$parents ) { - push @merge_tips, $tip_commit; - push @all_ranges, @ranges; - } else { - push @merge_tips, undef; - } - } - - my %excluded = map { $_ => 1 } - parents_exclude($parents, grep { defined } @merge_tips); - - # check merge tips for new parents - my @new_parents; - for my $merge_tip ( @merge_tips ) { - my $merge = shift @merges; - next unless $merge_tip and $excluded{$merge_tip}; - my $spec = "$merge:$mergeinfo->{$merge}"; - - # check out 'new' tips - my $merge_base; - eval { - $merge_base = command_oneline( - "merge-base", - @$parents, $merge_tip, - ); - }; - if ($@) { - die "An error occurred during merge-base" - unless $@->isa("Git::Error::Command"); - - warn "W: Cannot find common ancestor between ". - "@$parents and $merge_tip. Ignoring merge info.\n"; - next; - } - - # double check that there are no missing non-merge commits - my ($ninc, $ifirst) = check_cherry_pick2( - $merge_base, $merge_tip, - $parents, - @all_ranges, - ); - - if ($ninc) { - warn "W: svn cherry-pick ignored ($spec) - missing " . - "$ninc commit(s) (eg $ifirst)\n"; - } else { - warn "Found merge parent ($spec): ", $merge_tip, "\n"; - push @new_parents, $merge_tip; - } - } - - # cater for merges which merge commits from multiple branches - if ( @new_parents > 1 ) { - for ( my $i = 0; $i <= $#new_parents; $i++ ) { - for ( my $j = 0; $j <= $#new_parents; $j++ ) { - next if $i == $j; - next unless $new_parents[$i]; - next unless $new_parents[$j]; - my $revs = command_oneline( - "rev-list", "-1", - "$new_parents[$i]..$new_parents[$j]", - ); - if ( !$revs ) { - undef($new_parents[$j]); - } - } - } - } - push @$parents, grep { defined } @new_parents; -} - -sub make_log_entry { - my ($self, $rev, $parents, $ed, $parent_rev, $parent_path) = @_; - my $untracked = $self->get_untracked($ed); - - my @parents = @$parents; - my $props = $ed->{dir_prop}{$self->path}; - if ($self->follow_parent) { - my $tickets = $props->{"svk:merge"}; - if ($tickets) { - $self->find_extra_svk_parents($tickets, \@parents); - } - - my $mergeinfo_prop = $props->{"svn:mergeinfo"}; - if ($mergeinfo_prop) { - my $mi_changes = $self->mergeinfo_changes( - $parent_path, - $parent_rev, - $self->path, - $rev, - $mergeinfo_prop); - $self->find_extra_svn_parents($mi_changes, \@parents); - } - } - - open my $un, '>>', "$self->{dir}/unhandled.log" or croak $!; - print $un "r$rev\n" or croak $!; - print $un $_, "\n" foreach @$untracked; - my %log_entry = ( parents => \@parents, revision => $rev, - log => ''); - - my $headrev; - my $logged = delete $self->{logged_rev_props}; - if (!$logged || $self->{-want_revprops}) { - my $rp = $self->ra->rev_proplist($rev); - foreach (sort keys %$rp) { - my $v = $rp->{$_}; - if (/^svn:(author|date|log)$/) { - $log_entry{$1} = $v; - } elsif ($_ eq 'svm:headrev') { - $headrev = $v; - } else { - print $un " rev_prop: ", uri_encode($_), ' ', - uri_encode($v), "\n"; - } - } - } else { - map { $log_entry{$_} = $logged->{$_} } keys %$logged; - } - close $un or croak $!; - - $log_entry{date} = parse_svn_date($log_entry{date}); - $log_entry{log} .= "\n"; - my $author = $log_entry{author} = check_author($log_entry{author}); - my ($name, $email) = defined $::users{$author} ? @{$::users{$author}} - : ($author, undef); - - my ($commit_name, $commit_email) = ($name, $email); - if ($_use_log_author) { - my $name_field; - if ($log_entry{log} =~ /From:\s+(.*\S)\s*\n/i) { - $name_field = $1; - } elsif ($log_entry{log} =~ /Signed-off-by:\s+(.*\S)\s*\n/i) { - $name_field = $1; - } - if (!defined $name_field) { - if (!defined $email) { - $email = $name; - } - } elsif ($name_field =~ /(.*?)\s+<(.*)>/) { - ($name, $email) = ($1, $2); - } elsif ($name_field =~ /(.*)@/) { - ($name, $email) = ($1, $name_field); - } else { - ($name, $email) = ($name_field, $name_field); - } - } - if (defined $headrev && $self->use_svm_props) { - if ($self->rewrite_root) { - die "Can't have both 'useSvmProps' and 'rewriteRoot' ", - "options set!\n"; - } - if ($self->rewrite_uuid) { - die "Can't have both 'useSvmProps' and 'rewriteUUID' ", - "options set!\n"; - } - my ($uuid, $r) = $headrev =~ m{^([a-f\d\-]{30,}):(\d+)$}i; - # we don't want "SVM: initializing mirror for junk" ... - return undef if $r == 0; - my $svm = $self->svm; - if ($uuid ne $svm->{uuid}) { - die "UUID mismatch on SVM path:\n", - "expected: $svm->{uuid}\n", - " got: $uuid\n"; - } - my $full_url = $self->full_url; - $full_url =~ s#^\Q$svm->{replace}\E(/|$)#$svm->{source}$1# or - die "Failed to replace '$svm->{replace}' with ", - "'$svm->{source}' in $full_url\n"; - # throw away username for storing in records - remove_username($full_url); - $log_entry{metadata} = "$full_url\@$r $uuid"; - $log_entry{svm_revision} = $r; - $email = "$author\@$uuid" unless defined $email; - $commit_email = "$author\@$uuid" unless defined $commit_email; - } elsif ($self->use_svnsync_props) { - my $full_url = canonicalize_url( - add_path_to_url( $self->svnsync->{url}, $self->path ) - ); - remove_username($full_url); - my $uuid = $self->svnsync->{uuid}; - $log_entry{metadata} = "$full_url\@$rev $uuid"; - $email = "$author\@$uuid" unless defined $email; - $commit_email = "$author\@$uuid" unless defined $commit_email; - } else { - my $url = $self->metadata_url; - remove_username($url); - my $uuid = $self->rewrite_uuid || $self->ra->get_uuid; - $log_entry{metadata} = "$url\@$rev " . $uuid; - $email = "$author\@$uuid" unless defined $email; - $commit_email = "$author\@$uuid" unless defined $commit_email; - } - $log_entry{name} = $name; - $log_entry{email} = $email; - $log_entry{commit_name} = $commit_name; - $log_entry{commit_email} = $commit_email; - \%log_entry; -} - -sub fetch { - my ($self, $min_rev, $max_rev, @parents) = @_; - my ($last_rev, $last_commit) = $self->last_rev_commit; - my ($base, $head) = $self->get_fetch_range($min_rev, $max_rev); - $self->ra->gs_fetch_loop_common($base, $head, [$self]); -} - -sub set_tree_cb { - my ($self, $log_entry, $tree, $rev, $date, $author) = @_; - $self->{inject_parents} = { $rev => $tree }; - $self->fetch(undef, undef); -} - -sub set_tree { - my ($self, $tree) = (shift, shift); - my $log_entry = ::get_commit_entry($tree); - unless ($self->{last_rev}) { - fatal("Must have an existing revision to commit"); - } - my %ed_opts = ( r => $self->{last_rev}, - log => $log_entry->{log}, - ra => $self->ra, - tree_a => $self->{last_commit}, - tree_b => $tree, - editor_cb => sub { - $self->set_tree_cb($log_entry, $tree, @_) }, - svn_path => $self->path ); - if (!Git::SVN::Editor->new(\%ed_opts)->apply_diff) { - print "No changes\nr$self->{last_rev} = $tree\n"; - } -} - -sub rebuild_from_rev_db { - my ($self, $path) = @_; - my $r = -1; - open my $fh, '<', $path or croak "open: $!"; - binmode $fh or croak "binmode: $!"; - while (<$fh>) { - length($_) == 41 or croak "inconsistent size in ($_) != 41"; - chomp($_); - ++$r; - next if $_ eq ('0' x 40); - $self->rev_map_set($r, $_); - print "r$r = $_\n"; - } - close $fh or croak "close: $!"; - unlink $path or croak "unlink: $!"; -} - -#define a global associate map to record rebuild status -my %rebuild_status; -#define a global associate map to record rebuild verify status -my %rebuild_verify_status; - -sub rebuild { - my ($self) = @_; - my $map_path = $self->map_path; - my $partial = (-e $map_path && ! -z $map_path); - my $verify_key = $self->refname.'^0'; - if (!$rebuild_verify_status{$verify_key}) { - my $verify_result = ::verify_ref($verify_key); - if ($verify_result) { - $rebuild_verify_status{$verify_key} = 1; - } - } - if (!$rebuild_verify_status{$verify_key}) { - return; - } - if (!$partial && ($self->use_svm_props || $self->no_metadata)) { - my $rev_db = $self->rev_db_path; - $self->rebuild_from_rev_db($rev_db); - if ($self->use_svm_props) { - my $svm_rev_db = $self->rev_db_path($self->svm_uuid); - $self->rebuild_from_rev_db($svm_rev_db); - } - $self->unlink_rev_db_symlink; - return; - } - print "Rebuilding $map_path ...\n" if (!$partial); - my ($base_rev, $head) = ($partial ? $self->rev_map_max_norebuild(1) : - (undef, undef)); - my $key_value = ($head ? "$head.." : "") . $self->refname; - if (exists $rebuild_status{$key_value}) { - print "Done rebuilding $map_path\n" if (!$partial || !$head); - my $rev_db_path = $self->rev_db_path; - if (-f $self->rev_db_path) { - unlink $self->rev_db_path or croak "unlink: $!"; - } - $self->unlink_rev_db_symlink; - return; - } - my ($log, $ctx) = - command_output_pipe(qw/rev-list --pretty=raw --reverse/, - $key_value, - '--'); - $rebuild_status{$key_value} = 1; - my $metadata_url = $self->metadata_url; - remove_username($metadata_url); - my $svn_uuid = $self->rewrite_uuid || $self->ra_uuid; - my $c; - while (<$log>) { - if ( m{^commit ($::sha1)$} ) { - $c = $1; - next; - } - next unless s{^\s*(git-svn-id:)}{$1}; - my ($url, $rev, $uuid) = ::extract_metadata($_); - remove_username($url); - - # ignore merges (from set-tree) - next if (!defined $rev || !$uuid); - - # if we merged or otherwise started elsewhere, this is - # how we break out of it - if (($uuid ne $svn_uuid) || - ($metadata_url && $url && ($url ne $metadata_url))) { - next; - } - if ($partial && $head) { - print "Partial-rebuilding $map_path ...\n"; - print "Currently at $base_rev = $head\n"; - $head = undef; - } - - $self->rev_map_set($rev, $c); - print "r$rev = $c\n"; - } - command_close_pipe($log, $ctx); - print "Done rebuilding $map_path\n" if (!$partial || !$head); - my $rev_db_path = $self->rev_db_path; - if (-f $self->rev_db_path) { - unlink $self->rev_db_path or croak "unlink: $!"; - } - $self->unlink_rev_db_symlink; -} - -# rev_map: -# Tie::File seems to be prone to offset errors if revisions get sparse, -# it's not that fast, either. Tie::File is also not in Perl 5.6. So -# one of my favorite modules is out :< Next up would be one of the DBM -# modules, but I'm not sure which is most portable... -# -# This is the replacement for the rev_db format, which was too big -# and inefficient for large repositories with a lot of sparse history -# (mainly tags) -# -# The format is this: -# - 24 bytes for every record, -# * 4 bytes for the integer representing an SVN revision number -# * 20 bytes representing the sha1 of a git commit -# - No empty padding records like the old format -# (except the last record, which can be overwritten) -# - new records are written append-only since SVN revision numbers -# increase monotonically -# - lookups on SVN revision number are done via a binary search -# - Piping the file to xxd -c24 is a good way of dumping it for -# viewing or editing (piped back through xxd -r), should the need -# ever arise. -# - The last record can be padding revision with an all-zero sha1 -# This is used to optimize fetch performance when using multiple -# "fetch" directives in .git/config -# -# These files are disposable unless noMetadata or useSvmProps is set - -sub _rev_map_set { - my ($fh, $rev, $commit) = @_; - - binmode $fh or croak "binmode: $!"; - my $size = (stat($fh))[7]; - ($size % 24) == 0 or croak "inconsistent size: $size"; - - my $wr_offset = 0; - if ($size > 0) { - sysseek($fh, -24, SEEK_END) or croak "seek: $!"; - my $read = sysread($fh, my $buf, 24) or croak "read: $!"; - $read == 24 or croak "read only $read bytes (!= 24)"; - my ($last_rev, $last_commit) = unpack(rev_map_fmt, $buf); - if ($last_commit eq ('0' x40)) { - if ($size >= 48) { - sysseek($fh, -48, SEEK_END) or croak "seek: $!"; - $read = sysread($fh, $buf, 24) or - croak "read: $!"; - $read == 24 or - croak "read only $read bytes (!= 24)"; - ($last_rev, $last_commit) = - unpack(rev_map_fmt, $buf); - if ($last_commit eq ('0' x40)) { - croak "inconsistent .rev_map\n"; - } - } - if ($last_rev >= $rev) { - croak "last_rev is higher!: $last_rev >= $rev"; - } - $wr_offset = -24; - } - } - sysseek($fh, $wr_offset, SEEK_END) or croak "seek: $!"; - syswrite($fh, pack(rev_map_fmt, $rev, $commit), 24) == 24 or - croak "write: $!"; -} - -sub _rev_map_reset { - my ($fh, $rev, $commit) = @_; - my $c = _rev_map_get($fh, $rev); - $c eq $commit or die "_rev_map_reset(@_) commit $c does not match!\n"; - my $offset = sysseek($fh, 0, SEEK_CUR) or croak "seek: $!"; - truncate $fh, $offset or croak "truncate: $!"; -} - -sub mkfile { - my ($path) = @_; - unless (-e $path) { - my ($dir, $base) = ($path =~ m#^(.*?)/?([^/]+)$#); - mkpath([$dir]) unless -d $dir; - open my $fh, '>>', $path or die "Couldn't create $path: $!\n"; - close $fh or die "Couldn't close (create) $path: $!\n"; - } -} - -sub rev_map_set { - my ($self, $rev, $commit, $update_ref, $uuid) = @_; - defined $commit or die "missing arg3\n"; - length $commit == 40 or die "arg3 must be a full SHA1 hexsum\n"; - my $db = $self->map_path($uuid); - my $db_lock = "$db.lock"; - my $sigmask; - $update_ref ||= 0; - if ($update_ref) { - $sigmask = POSIX::SigSet->new(); - my $signew = POSIX::SigSet->new(SIGINT, SIGHUP, SIGTERM, - SIGALRM, SIGUSR1, SIGUSR2); - sigprocmask(SIG_BLOCK, $signew, $sigmask) or - croak "Can't block signals: $!"; - } - mkfile($db); - - $LOCKFILES{$db_lock} = 1; - my $sync; - # both of these options make our .rev_db file very, very important - # and we can't afford to lose it because rebuild() won't work - if ($self->use_svm_props || $self->no_metadata) { - require File::Copy; - $sync = 1; - File::Copy::copy($db, $db_lock) or die "rev_map_set(@_): ", - "Failed to copy: ", - "$db => $db_lock ($!)\n"; - } else { - rename $db, $db_lock or die "rev_map_set(@_): ", - "Failed to rename: ", - "$db => $db_lock ($!)\n"; - } - - sysopen(my $fh, $db_lock, O_RDWR | O_CREAT) - or croak "Couldn't open $db_lock: $!\n"; - if ($update_ref eq 'reset') { - clear_memoized_mergeinfo_caches(); - _rev_map_reset($fh, $rev, $commit); - } else { - _rev_map_set($fh, $rev, $commit); - } - - if ($sync) { - $fh->flush or die "Couldn't flush $db_lock: $!\n"; - $fh->sync or die "Couldn't sync $db_lock: $!\n"; - } - close $fh or croak $!; - if ($update_ref) { - $_head = $self; - my $note = ""; - $note = " ($update_ref)" if ($update_ref !~ /^\d*$/); - command_noisy('update-ref', '-m', "r$rev$note", - $self->refname, $commit); - } - rename $db_lock, $db or die "rev_map_set(@_): ", "Failed to rename: ", - "$db_lock => $db ($!)\n"; - delete $LOCKFILES{$db_lock}; - if ($update_ref) { - sigprocmask(SIG_SETMASK, $sigmask) or - croak "Can't restore signal mask: $!"; - } -} - -# If want_commit, this will return an array of (rev, commit) where -# commit _must_ be a valid commit in the archive. -# Otherwise, it'll return the max revision (whether or not the -# commit is valid or just a 0x40 placeholder). -sub rev_map_max { - my ($self, $want_commit) = @_; - $self->rebuild; - my ($r, $c) = $self->rev_map_max_norebuild($want_commit); - $want_commit ? ($r, $c) : $r; -} - -sub rev_map_max_norebuild { - my ($self, $want_commit) = @_; - my $map_path = $self->map_path; - stat $map_path or return $want_commit ? (0, undef) : 0; - sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!"; - binmode $fh or croak "binmode: $!"; - my $size = (stat($fh))[7]; - ($size % 24) == 0 or croak "inconsistent size: $size"; - - if ($size == 0) { - close $fh or croak "close: $!"; - return $want_commit ? (0, undef) : 0; - } - - sysseek($fh, -24, SEEK_END) or croak "seek: $!"; - sysread($fh, my $buf, 24) == 24 or croak "read: $!"; - my ($r, $c) = unpack(rev_map_fmt, $buf); - if ($want_commit && $c eq ('0' x40)) { - if ($size < 48) { - return $want_commit ? (0, undef) : 0; - } - sysseek($fh, -48, SEEK_END) or croak "seek: $!"; - sysread($fh, $buf, 24) == 24 or croak "read: $!"; - ($r, $c) = unpack(rev_map_fmt, $buf); - if ($c eq ('0'x40)) { - croak "Penultimate record is all-zeroes in $map_path"; - } - } - close $fh or croak "close: $!"; - $want_commit ? ($r, $c) : $r; -} - -sub rev_map_get { - my ($self, $rev, $uuid) = @_; - my $map_path = $self->map_path($uuid); - return undef unless -e $map_path; - - sysopen(my $fh, $map_path, O_RDONLY) or croak "open: $!"; - my $c = _rev_map_get($fh, $rev); - close($fh) or croak "close: $!"; - $c -} - -sub _rev_map_get { - my ($fh, $rev) = @_; - - binmode $fh or croak "binmode: $!"; - my $size = (stat($fh))[7]; - ($size % 24) == 0 or croak "inconsistent size: $size"; - - if ($size == 0) { - return undef; - } - - my ($l, $u) = (0, $size - 24); - my ($r, $c, $buf); - - while ($l <= $u) { - my $i = int(($l/24 + $u/24) / 2) * 24; - sysseek($fh, $i, SEEK_SET) or croak "seek: $!"; - sysread($fh, my $buf, 24) == 24 or croak "read: $!"; - my ($r, $c) = unpack(rev_map_fmt, $buf); - - if ($r < $rev) { - $l = $i + 24; - } elsif ($r > $rev) { - $u = $i - 24; - } else { # $r == $rev - return $c eq ('0' x 40) ? undef : $c; - } - } - undef; -} - -# Finds the first svn revision that exists on (if $eq_ok is true) or -# before $rev for the current branch. It will not search any lower -# than $min_rev. Returns the git commit hash and svn revision number -# if found, else (undef, undef). -sub find_rev_before { - my ($self, $rev, $eq_ok, $min_rev) = @_; - --$rev unless $eq_ok; - $min_rev ||= 1; - my $max_rev = $self->rev_map_max; - $rev = $max_rev if ($rev > $max_rev); - while ($rev >= $min_rev) { - if (my $c = $self->rev_map_get($rev)) { - return ($rev, $c); - } - --$rev; - } - return (undef, undef); -} - -# Finds the first svn revision that exists on (if $eq_ok is true) or -# after $rev for the current branch. It will not search any higher -# than $max_rev. Returns the git commit hash and svn revision number -# if found, else (undef, undef). -sub find_rev_after { - my ($self, $rev, $eq_ok, $max_rev) = @_; - ++$rev unless $eq_ok; - $max_rev ||= $self->rev_map_max; - while ($rev <= $max_rev) { - if (my $c = $self->rev_map_get($rev)) { - return ($rev, $c); - } - ++$rev; - } - return (undef, undef); -} - -sub _new { - my ($class, $repo_id, $ref_id, $path) = @_; - unless (defined $repo_id && length $repo_id) { - $repo_id = $default_repo_id; - } - unless (defined $ref_id && length $ref_id) { - # Access the prefix option from the git-svn main program if it's loaded. - my $prefix = defined &::opt_prefix ? ::opt_prefix() : ""; - $_[2] = $ref_id = - "refs/remotes/$prefix$default_ref_id"; - } - $_[1] = $repo_id; - my $svn_dir = svn_dir(); - my $dir = "$svn_dir/$ref_id"; - - # Older repos imported by us used $svn_dir/foo instead of - # $svn_dir/refs/remotes/foo when tracking refs/remotes/foo - if ($ref_id =~ m{^refs/remotes/(.+)}) { - my $old_dir = "$svn_dir/$1"; - if (-d $old_dir && ! -d $dir) { - $dir = $old_dir; - } - } - - $_[3] = $path = '' unless (defined $path); - mkpath([$dir]); - my $obj = bless { - ref_id => $ref_id, dir => $dir, index => "$dir/index", - config => "$svn_dir/config", - map_root => "$dir/.rev_map", repo_id => $repo_id }, $class; - - # Ensure it gets canonicalized - $obj->path($path); - - return $obj; -} - -sub path { - my $self = shift; - - if (@_) { - my $path = shift; - $self->{_path} = canonicalize_path($path); - return; - } - - return $self->{_path}; -} - -sub url { - my $self = shift; - - if (@_) { - my $url = shift; - $self->{url} = canonicalize_url($url); - return; - } - - return $self->{url}; -} - -# for read-only access of old .rev_db formats -sub unlink_rev_db_symlink { - my ($self) = @_; - my $link = $self->rev_db_path; - $link =~ s/\.[\w-]+$// or croak "missing UUID at the end of $link"; - if (-l $link) { - unlink $link or croak "unlink: $link failed!"; - } -} - -sub rev_db_path { - my ($self, $uuid) = @_; - my $db_path = $self->map_path($uuid); - $db_path =~ s{/\.rev_map\.}{/\.rev_db\.} - or croak "map_path: $db_path does not contain '/.rev_map.' !"; - $db_path; -} - -# the new replacement for .rev_db -sub map_path { - my ($self, $uuid) = @_; - $uuid ||= $self->ra_uuid; - "$self->{map_root}.$uuid"; -} - -sub uri_encode { - my ($f) = @_; - $f =~ s#([^a-zA-Z0-9\*!\:_\./\-])#sprintf("%%%02X",ord($1))#eg; - $f -} - -sub uri_decode { - my ($f) = @_; - $f =~ s#%([0-9a-fA-F]{2})#chr(hex($1))#eg; - $f -} - -sub remove_username { - $_[0] =~ s{^([^:]*://)[^@]+@}{$1}; -} - -1; |