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 File::Copy qw/copy/; use IPC::Open3; use Memoize; # core since 5.8.0, Jul 2002 use Memoize::Storable; use POSIX qw(:signal_h); 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 $can_use_yaml; BEGIN { $can_use_yaml = eval { require Git::SVN::Memoize::YAML; 1}; } 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]; $u =~ s!^\Q$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 nor 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])}{uc 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 tmp_config { my (@args) = @_; my $old_def_config = "$ENV{GIT_DIR}/svn/config"; my $config = "$ENV{GIT_DIR}/svn/.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], $ed); } return undef; } sub do_fetch { my ($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, nor 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, $ed); } sub mkemptydirs { my ($self, $r) = @_; sub scan { my ($r, $empty_dirs, $line) = @_; if (defined $r && $line =~ /^r(\d+)$/) { return 0 if $1 > $r; } elsif ($line =~ /^ \+empty_dir: (.+)$/) { $empty_dirs->{$1} = 1; } elsif ($line =~ /^ \-empty_dir: (.+)$/) { my @d = grep {m[^\Q$1\E(/|$)]} (keys %$empty_dirs); delete @$empty_dirs{@d}; } 1; # continue }; my %empty_dirs = (); 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, \%empty_dirs, $line) or last; } $gz->gzclose; } } if (open my $fh, '<', "$self->{dir}/unhandled.log") { binmode $fh or croak "binmode: $!"; while (<$fh>) { scan($r, \%empty_dirs, $_) or last; } close $fh; } my $strip = qr/\A\Q@{[$self->path]}\E(?:\/|$)/; foreach my $d (sort keys %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 = POSIX::strftime('%s', $S, $M, $H, $d, $m - 1, $Y - 1900); # 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(); # 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); $email = undef if length $2 == 0; return [$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, $ed, $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 $merge = shift; my ($source, $revs) = split ":", $merge; 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 $range ( @ranges ) { my ($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_pick { 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}; } } return (keys %commits); } 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 $path = shift; if ($can_use_yaml) { tie %$hash => 'Git::SVN::Memoize::YAML', "$path.yaml"; } else { tie %$hash => 'Memoize::Storable', "$path.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 $cache_path = "$ENV{GIT_DIR}/svn/.caches/"; mkpath([$cache_path]) unless -d $cache_path; my %lookup_svn_merge_cache; my %check_cherry_pick_cache; my %has_no_changes_cache; tie_for_persistent_memoization(\%lookup_svn_merge_cache, "$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_pick_cache, "$cache_path/check_cherry_pick"); memoize 'check_cherry_pick', SCALAR_CACHE => 'FAULT', LIST_CACHE => ['HASH' => \%check_cherry_pick_cache], ; tie_for_persistent_memoization(\%has_no_changes_cache, "$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; $memoized = 0; Memoize::unmemoize 'lookup_svn_merge'; Memoize::unmemoize 'check_cherry_pick'; Memoize::unmemoize 'has_no_changes'; } sub clear_memoized_mergeinfo_caches { die "Only call this method in non-memoized context" if ($memoized); my $cache_path = "$ENV{GIT_DIR}/svn/.caches/"; return unless -d $cache_path; for my $cache_file (("$cache_path/lookup_svn_merge", "$cache_path/check_cherry_pick", "$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; } # note: this function should only be called if the various dirprops # have actually changed sub find_extra_svn_parents { my ($self, $ed, $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 = split "\n", $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, $merge ); unless (!$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 $spec = shift @merges; next unless $merge_tip and $excluded{$merge_tip}; # 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 (@incomplete) = check_cherry_pick( $merge_base, $merge_tip, $parents, @all_ranges, ); if ( @incomplete ) { warn "W:svn cherry-pick ignored ($spec) - missing " .@incomplete." commit(s) (eg $incomplete[0])\n"; } else { warn "Found merge parent (svn:mergeinfo prop): ", $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) = @_; my $untracked = $self->get_untracked($ed); my @parents = @$parents; my $ps = $ed->{path_strip} || ""; for my $path ( grep { m/$ps/ } %{$ed->{dir_prop}} ) { my $props = $ed->{dir_prop}{$path}; if ( $props->{"svk:merge"} ) { $self->find_extra_svk_parents ($ed, $props->{"svk:merge"}, \@parents); } if ( $props->{"svn:mergeinfo"} ) { $self->find_extra_svn_parents ($ed, $props->{"svn:mergeinfo"}, \@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"; $commit_email ||= "$author\@$uuid"; } elsif ($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"; $commit_email ||= "$author\@$uuid"; } 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; $commit_email ||= "$author\@" . $uuid; } $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: $!"; } sub rebuild { my ($self) = @_; my $map_path = $self->map_path; my $partial = (-e $map_path && ! -z $map_path); return unless ::verify_ref($self->refname.'^0'); 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 ? $self->rev_map_max_norebuild(1) : (undef, undef)); my ($log, $ctx) = command_output_pipe(qw/rev-list --pretty=raw --reverse/, ($head ? "$head.." : "") . $self->refname, '--'); 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) { $sync = 1; copy($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 $dir = "$ENV{GIT_DIR}/svn/$ref_id"; # Older repos imported by us used $GIT_DIR/svn/foo instead of # $GIT_DIR/svn/refs/remotes/foo when tracking refs/remotes/foo if ($ref_id =~ m{^refs/remotes/(.*)}) { my $old_dir = "$ENV{GIT_DIR}/svn/$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 => "$ENV{GIT_DIR}/svn/config", map_root => "$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\*!\:_\./\-])#uc 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;