708 lines
19 KiB
Perl
708 lines
19 KiB
Perl
package Git::SVN::Ra;
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use vars qw/@ISA $config_dir $_ignore_refs_regex $_log_window_size/;
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use strict;
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use warnings;
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use Memoize;
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use Git::SVN::Utils qw(
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canonicalize_url
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canonicalize_path
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add_path_to_url
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);
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use SVN::Ra;
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BEGIN {
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@ISA = qw(SVN::Ra);
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}
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my ($ra_invalid, $can_do_switch, %ignored_err, $RA);
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BEGIN {
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# enforce temporary pool usage for some simple functions
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no strict 'refs';
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for my $f (qw/rev_proplist get_latest_revnum get_uuid get_repos_root
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get_file/) {
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my $SUPER = "SUPER::$f";
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*$f = sub {
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my $self = shift;
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my $pool = SVN::Pool->new;
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my @ret = $self->$SUPER(@_,$pool);
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$pool->clear;
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wantarray ? @ret : $ret[0];
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};
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}
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}
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# serf has a bug that leads to a coredump upon termination if the
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# remote access object is left around (not fixed yet in serf 1.3.1).
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# Explicitly free it to work around the issue.
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END {
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$RA = undef;
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$ra_invalid = 1;
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}
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sub _auth_providers () {
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require SVN::Client;
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my @rv = (
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SVN::Client::get_simple_provider(),
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SVN::Client::get_ssl_server_trust_file_provider(),
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SVN::Client::get_simple_prompt_provider(
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\&Git::SVN::Prompt::simple, 2),
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SVN::Client::get_ssl_client_cert_file_provider(),
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SVN::Client::get_ssl_client_cert_prompt_provider(
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\&Git::SVN::Prompt::ssl_client_cert, 2),
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SVN::Client::get_ssl_client_cert_pw_file_provider(),
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SVN::Client::get_ssl_client_cert_pw_prompt_provider(
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\&Git::SVN::Prompt::ssl_client_cert_pw, 2),
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SVN::Client::get_username_provider(),
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SVN::Client::get_ssl_server_trust_prompt_provider(
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\&Git::SVN::Prompt::ssl_server_trust),
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SVN::Client::get_username_prompt_provider(
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\&Git::SVN::Prompt::username, 2)
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);
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# earlier 1.6.x versions would segfault, and <= 1.5.x didn't have
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# this function
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if (::compare_svn_version('1.6.15') >= 0) {
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my $config = SVN::Core::config_get_config($config_dir);
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my ($p, @a);
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# config_get_config returns all config files from
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# ~/.subversion, auth_get_platform_specific_client_providers
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# just wants the config "file".
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@a = ($config->{'config'}, undef);
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$p = SVN::Core::auth_get_platform_specific_client_providers(@a);
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# Insert the return value from
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# auth_get_platform_specific_providers
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unshift @rv, @$p;
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}
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\@rv;
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}
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sub prepare_config_once {
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SVN::_Core::svn_config_ensure($config_dir, undef);
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my ($baton, $callbacks) = SVN::Core::auth_open_helper(_auth_providers);
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my $config = SVN::Core::config_get_config($config_dir);
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my $conf_t = $config->{'config'};
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no warnings 'once';
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# The usage of $SVN::_Core::SVN_CONFIG_* variables
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# produces warnings that variables are used only once.
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# I had not found the better way to shut them up, so
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# the warnings of type 'once' are disabled in this block.
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if (SVN::_Core::svn_config_get_bool($conf_t,
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$SVN::_Core::SVN_CONFIG_SECTION_AUTH,
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$SVN::_Core::SVN_CONFIG_OPTION_STORE_PASSWORDS,
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1) == 0) {
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my $val = '1';
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if (::compare_svn_version('1.9.0') < 0) { # pre-SVN r1553823
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my $dont_store_passwords = 1;
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$val = bless \$dont_store_passwords, "_p_void";
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}
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SVN::_Core::svn_auth_set_parameter($baton,
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$SVN::_Core::SVN_AUTH_PARAM_DONT_STORE_PASSWORDS,
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$val);
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}
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if (SVN::_Core::svn_config_get_bool($conf_t,
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$SVN::_Core::SVN_CONFIG_SECTION_AUTH,
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$SVN::_Core::SVN_CONFIG_OPTION_STORE_AUTH_CREDS,
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1) == 0) {
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$Git::SVN::Prompt::_no_auth_cache = 1;
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}
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return ($config, $baton, $callbacks);
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} # no warnings 'once'
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INIT {
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Memoize::memoize '_auth_providers';
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Memoize::memoize 'prepare_config_once';
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}
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sub new {
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my ($class, $url) = @_;
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$url = canonicalize_url($url);
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return $RA if ($RA && $RA->url eq $url);
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::_req_svn();
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$RA = undef;
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my ($config, $baton, $callbacks) = prepare_config_once();
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my $self = SVN::Ra->new(url => $url, auth => $baton,
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config => $config,
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pool => SVN::Pool->new,
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auth_provider_callbacks => $callbacks);
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$RA = bless $self, $class;
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# Make sure its canonicalized
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$self->url($url);
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$self->{svn_path} = $url;
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$self->{repos_root} = $self->get_repos_root;
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$self->{svn_path} =~ s#^\Q$self->{repos_root}\E(/|$)##;
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$self->{cache} = { check_path => { r => 0, data => {} },
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get_dir => { r => 0, data => {} } };
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return $RA;
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}
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sub url {
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my $self = shift;
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if (@_) {
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my $url = shift;
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$self->{url} = canonicalize_url($url);
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return;
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}
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return $self->{url};
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}
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sub check_path {
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my ($self, $path, $r) = @_;
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my $cache = $self->{cache}->{check_path};
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if ($r == $cache->{r} && exists $cache->{data}->{$path}) {
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return $cache->{data}->{$path};
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}
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my $pool = SVN::Pool->new;
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my $t = $self->SUPER::check_path($path, $r, $pool);
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$pool->clear;
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if ($r != $cache->{r}) {
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%{$cache->{data}} = ();
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$cache->{r} = $r;
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}
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$cache->{data}->{$path} = $t;
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}
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sub get_dir {
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my ($self, $dir, $r) = @_;
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my $cache = $self->{cache}->{get_dir};
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if ($r == $cache->{r}) {
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if (my $x = $cache->{data}->{$dir}) {
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return wantarray ? @$x : $x->[0];
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}
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}
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my $pool = SVN::Pool->new;
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my ($d, undef, $props);
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if (::compare_svn_version('1.4.0') >= 0) {
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# n.b. in addition to being potentially more efficient,
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# this works around what appears to be a bug in some
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# SVN 1.8 versions
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my $kind = 1; # SVN_DIRENT_KIND
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($d, undef, $props) = $self->get_dir2($dir, $r, $kind, $pool);
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} else {
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($d, undef, $props) = $self->SUPER::get_dir($dir, $r, $pool);
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}
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my %dirents = map { $_ => { kind => $d->{$_}->kind } } keys %$d;
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$pool->clear;
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if ($r != $cache->{r}) {
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%{$cache->{data}} = ();
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$cache->{r} = $r;
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}
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$cache->{data}->{$dir} = [ \%dirents, $r, $props ];
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wantarray ? (\%dirents, $r, $props) : \%dirents;
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}
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# get_log(paths, start, end, limit,
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# discover_changed_paths, strict_node_history, receiver)
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sub get_log {
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my ($self, @args) = @_;
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my $pool = SVN::Pool->new;
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# svn_log_changed_path_t objects passed to get_log are likely to be
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# overwritten even if only the refs are copied to an external variable,
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# so we should dup the structures in their entirety. Using an
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# externally passed pool (instead of our temporary and quickly cleared
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# pool in Git::SVN::Ra) does not help matters at all...
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my $receiver = pop @args;
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my $prefix = "/".$self->{svn_path};
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$prefix =~ s#/+($)##;
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my $prefix_regex = qr#^\Q$prefix\E#;
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push(@args, sub {
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my ($paths) = $_[0];
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return &$receiver(@_) unless $paths;
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$_[0] = ();
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foreach my $p (keys %$paths) {
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my $i = $paths->{$p};
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# Make path relative to our url, not repos_root
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$p =~ s/$prefix_regex//;
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my %s = map { $_ => $i->$_; }
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qw/copyfrom_path copyfrom_rev action/;
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if ($s{'copyfrom_path'}) {
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$s{'copyfrom_path'} =~ s/$prefix_regex//;
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$s{'copyfrom_path'} = canonicalize_path($s{'copyfrom_path'});
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}
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$_[0]{$p} = \%s;
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}
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&$receiver(@_);
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});
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# the limit parameter was not supported in SVN 1.1.x, so we
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# drop it. Therefore, the receiver callback passed to it
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# is made aware of this limitation by being wrapped if
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# the limit passed to is being wrapped.
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if (::compare_svn_version('1.2.0') <= 0) {
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my $limit = splice(@args, 3, 1);
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if ($limit > 0) {
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my $receiver = pop @args;
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push(@args, sub { &$receiver(@_) if (--$limit >= 0) });
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}
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}
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my $ret = $self->SUPER::get_log(@args, $pool);
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$pool->clear;
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$ret;
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}
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# uncommon, only for ancient SVN (<= 1.4.2)
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sub trees_match {
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require IO::File;
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require SVN::Client;
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my ($self, $url1, $rev1, $url2, $rev2) = @_;
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my $ctx = SVN::Client->new(auth => _auth_providers);
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my $out = IO::File->new_tmpfile;
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# older SVN (1.1.x) doesn't take $pool as the last parameter for
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# $ctx->diff(), so we'll create a default one
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my $pool = SVN::Pool->new_default_sub;
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$ra_invalid = 1; # this will open a new SVN::Ra connection to $url1
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$ctx->diff([], $url1, $rev1, $url2, $rev2, 1, 1, 0, $out, $out);
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$out->flush;
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my $ret = (($out->stat)[7] == 0);
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close $out or croak $!;
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$ret;
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}
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sub get_commit_editor {
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my ($self, $log, $cb, $pool) = @_;
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my @lock = (::compare_svn_version('1.2.0') >= 0) ? (undef, 0) : ();
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$self->SUPER::get_commit_editor($log, $cb, @lock, $pool);
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}
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sub gs_do_update {
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my ($self, $rev_a, $rev_b, $gs, $editor) = @_;
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my $new = ($rev_a == $rev_b);
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my $path = $gs->path;
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if ($new && -e $gs->{index}) {
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unlink $gs->{index} or die
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"Couldn't unlink index: $gs->{index}: $!\n";
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}
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my $pool = SVN::Pool->new;
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$editor->set_path_strip($path);
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my (@pc) = split m#/#, $path;
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my $reporter = $self->do_update($rev_b, (@pc ? shift @pc : ''),
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1, $editor, $pool);
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my @lock = (::compare_svn_version('1.2.0') >= 0) ? (undef) : ();
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# Since we can't rely on svn_ra_reparent being available, we'll
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# just have to do some magic with set_path to make it so
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# we only want a partial path.
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my $sp = '';
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my $final = join('/', @pc);
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while (@pc) {
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$reporter->set_path($sp, $rev_b, 0, @lock, $pool);
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$sp .= '/' if length $sp;
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$sp .= shift @pc;
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}
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die "BUG: '$sp' != '$final'\n" if ($sp ne $final);
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$reporter->set_path($sp, $rev_a, $new, @lock, $pool);
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$reporter->finish_report($pool);
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$pool->clear;
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$editor->{git_commit_ok};
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}
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# this requires SVN 1.4.3 or later (do_switch didn't work before 1.4.3, and
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# svn_ra_reparent didn't work before 1.4)
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sub gs_do_switch {
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my ($self, $rev_a, $rev_b, $gs, $url_b, $editor) = @_;
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my $path = $gs->path;
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my $pool = SVN::Pool->new;
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my $old_url = $self->url;
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my $full_url = add_path_to_url( $self->url, $path );
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my ($ra, $reparented);
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if ($old_url =~ m#^svn(\+\w+)?://# ||
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($full_url =~ m#^https?://# &&
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canonicalize_url($full_url) ne $full_url)) {
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$_[0] = undef;
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$self = undef;
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$RA = undef;
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$ra = Git::SVN::Ra->new($full_url);
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$ra_invalid = 1;
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} elsif ($old_url ne $full_url) {
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SVN::_Ra::svn_ra_reparent(
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$self->{session},
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canonicalize_url($full_url),
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$pool
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);
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$self->url($full_url);
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$reparented = 1;
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}
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$ra ||= $self;
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$url_b = canonicalize_url($url_b);
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my $reporter = $ra->do_switch($rev_b, '', 1, $url_b, $editor, $pool);
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my @lock = (::compare_svn_version('1.2.0') >= 0) ? (undef) : ();
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$reporter->set_path('', $rev_a, 0, @lock, $pool);
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$reporter->finish_report($pool);
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if ($reparented) {
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SVN::_Ra::svn_ra_reparent($self->{session}, $old_url, $pool);
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$self->url($old_url);
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}
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$pool->clear;
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$editor->{git_commit_ok};
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}
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sub longest_common_path {
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my ($gsv, $globs) = @_;
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my %common;
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my $common_max = scalar @$gsv;
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foreach my $gs (@$gsv) {
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my @tmp = split m#/#, $gs->path;
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my $p = '';
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foreach (@tmp) {
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$p .= length($p) ? "/$_" : $_;
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$common{$p} ||= 0;
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$common{$p}++;
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}
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}
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$globs ||= [];
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$common_max += scalar @$globs;
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foreach my $glob (@$globs) {
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my @tmp = split m#/#, $glob->{path}->{left};
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my $p = '';
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foreach (@tmp) {
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$p .= length($p) ? "/$_" : $_;
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$common{$p} ||= 0;
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$common{$p}++;
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}
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}
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my $longest_path = '';
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foreach (sort {length $b <=> length $a} keys %common) {
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if ($common{$_} == $common_max) {
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$longest_path = $_;
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last;
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}
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}
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$longest_path;
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}
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sub gs_fetch_loop_common {
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my ($self, $base, $head, $gsv, $globs) = @_;
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return if ($base > $head);
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# Make sure the cat_blob open2 FileHandle is created before calling
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# SVN::Pool::new_default so that it does not incorrectly end up in the pool.
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$::_repository->_open_cat_blob_if_needed;
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my $gpool = SVN::Pool->new_default;
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my $ra_url = $self->url;
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my $reload_ra = sub {
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$_[0] = undef;
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$self = undef;
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$RA = undef;
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$gpool->clear;
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$self = Git::SVN::Ra->new($ra_url);
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$ra_invalid = undef;
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};
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my $inc = $_log_window_size;
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my ($min, $max) = ($base, $head < $base + $inc ? $head : $base + $inc);
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my $longest_path = longest_common_path($gsv, $globs);
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my $find_trailing_edge;
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while (1) {
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my %revs;
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my $err;
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my $err_handler = $SVN::Error::handler;
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$SVN::Error::handler = sub {
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($err) = @_;
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skip_unknown_revs($err);
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};
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sub _cb {
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my ($paths, $r, $author, $date, $log) = @_;
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[ $paths,
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{ author => $author, date => $date, log => $log } ];
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}
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$self->get_log([$longest_path], $min, $max, 0, 1, 1,
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sub { $revs{$_[1]} = _cb(@_) });
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if ($err) {
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print "Checked through r$max\r";
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} else {
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$find_trailing_edge = 1;
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}
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if ($err and $find_trailing_edge) {
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print STDERR "Path '$longest_path' ",
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"was probably deleted:\n",
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$err->expanded_message,
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"\nWill attempt to follow ",
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"revisions r$min .. r$max ",
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"committed before the deletion\n";
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my $hi = $max;
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while (--$hi >= $min) {
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my $ok;
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$self->get_log([$longest_path], $min, $hi,
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0, 1, 1, sub {
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$ok = $_[1];
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$revs{$_[1]} = _cb(@_) });
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if ($ok) {
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print STDERR "r$min .. r$ok OK\n";
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last;
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}
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}
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$find_trailing_edge = 0;
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}
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$SVN::Error::handler = $err_handler;
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my %exists = map { $_->path => $_ } @$gsv;
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foreach my $r (sort {$a <=> $b} keys %revs) {
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my ($paths, $logged) = @{delete $revs{$r}};
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foreach my $gs ($self->match_globs(\%exists, $paths,
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$globs, $r)) {
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if ($gs->rev_map_max >= $r) {
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next;
|
|
}
|
|
next unless $gs->match_paths($paths, $r);
|
|
$gs->{logged_rev_props} = $logged;
|
|
if (my $last_commit = $gs->last_commit) {
|
|
$gs->assert_index_clean($last_commit);
|
|
}
|
|
my $log_entry = $gs->do_fetch($paths, $r);
|
|
if ($log_entry) {
|
|
$gs->do_git_commit($log_entry);
|
|
}
|
|
$Git::SVN::INDEX_FILES{$gs->{index}} = 1;
|
|
}
|
|
foreach my $g (@$globs) {
|
|
my $k = "svn-remote.$g->{remote}." .
|
|
"$g->{t}-maxRev";
|
|
Git::SVN::tmp_config($k, $r);
|
|
}
|
|
$reload_ra->() if $ra_invalid;
|
|
}
|
|
# pre-fill the .rev_db since it'll eventually get filled in
|
|
# with '0' x40 if something new gets committed
|
|
foreach my $gs (@$gsv) {
|
|
next if $gs->rev_map_max >= $max;
|
|
next if defined $gs->rev_map_get($max);
|
|
$gs->rev_map_set($max, 0 x40);
|
|
}
|
|
foreach my $g (@$globs) {
|
|
my $k = "svn-remote.$g->{remote}.$g->{t}-maxRev";
|
|
Git::SVN::tmp_config($k, $max);
|
|
}
|
|
last if $max >= $head;
|
|
$min = $max + 1;
|
|
$max += $inc;
|
|
$max = $head if ($max > $head);
|
|
|
|
$reload_ra->();
|
|
}
|
|
Git::SVN::gc();
|
|
}
|
|
|
|
sub get_dir_globbed {
|
|
my ($self, $left, $depth, $r) = @_;
|
|
|
|
my @x = eval { $self->get_dir($left, $r) };
|
|
return unless scalar @x == 3;
|
|
my $dirents = $x[0];
|
|
my @finalents;
|
|
foreach my $de (keys %$dirents) {
|
|
next if $dirents->{$de}->{kind} != $SVN::Node::dir;
|
|
if ($depth > 1) {
|
|
my @args = ("$left/$de", $depth - 1, $r);
|
|
foreach my $dir ($self->get_dir_globbed(@args)) {
|
|
push @finalents, "$de/$dir";
|
|
}
|
|
} else {
|
|
push @finalents, $de;
|
|
}
|
|
}
|
|
@finalents;
|
|
}
|
|
|
|
# return value: 0 -- don't ignore, 1 -- ignore
|
|
sub is_ref_ignored {
|
|
my ($g, $p) = @_;
|
|
my $refname = $g->{ref}->full_path($p);
|
|
return 1 if defined($g->{ignore_refs_regex}) &&
|
|
$refname =~ m!$g->{ignore_refs_regex}!;
|
|
return 0 unless defined($_ignore_refs_regex);
|
|
return 1 if $refname =~ m!$_ignore_refs_regex!o;
|
|
return 0;
|
|
}
|
|
|
|
sub match_globs {
|
|
my ($self, $exists, $paths, $globs, $r) = @_;
|
|
|
|
sub get_dir_check {
|
|
my ($self, $exists, $g, $r) = @_;
|
|
|
|
my @dirs = $self->get_dir_globbed($g->{path}->{left},
|
|
$g->{path}->{depth},
|
|
$r);
|
|
|
|
foreach my $de (@dirs) {
|
|
my $p = $g->{path}->full_path($de);
|
|
next if $exists->{$p};
|
|
next if (length $g->{path}->{right} &&
|
|
($self->check_path($p, $r) !=
|
|
$SVN::Node::dir));
|
|
next unless $p =~ /$g->{path}->{regex}/;
|
|
$exists->{$p} = Git::SVN->init($self->url, $p, undef,
|
|
$g->{ref}->full_path($de), 1);
|
|
}
|
|
}
|
|
foreach my $g (@$globs) {
|
|
if (my $path = $paths->{"/$g->{path}->{left}"}) {
|
|
if ($path->{action} =~ /^[AR]$/) {
|
|
get_dir_check($self, $exists, $g, $r);
|
|
}
|
|
}
|
|
foreach (keys %$paths) {
|
|
if (/$g->{path}->{left_regex}/ &&
|
|
!/$g->{path}->{regex}/) {
|
|
next if $paths->{$_}->{action} !~ /^[AR]$/;
|
|
get_dir_check($self, $exists, $g, $r);
|
|
}
|
|
next unless /$g->{path}->{regex}/;
|
|
my $p = $1;
|
|
my $pathname = $g->{path}->full_path($p);
|
|
next if is_ref_ignored($g, $p);
|
|
next if $exists->{$pathname};
|
|
next if ($self->check_path($pathname, $r) !=
|
|
$SVN::Node::dir);
|
|
$exists->{$pathname} = Git::SVN->init(
|
|
$self->url, $pathname, undef,
|
|
$g->{ref}->full_path($p), 1);
|
|
}
|
|
my $c = '';
|
|
foreach (split m#/#, $g->{path}->{left}) {
|
|
$c .= "/$_";
|
|
next unless ($paths->{$c} &&
|
|
($paths->{$c}->{action} =~ /^[AR]$/));
|
|
get_dir_check($self, $exists, $g, $r);
|
|
}
|
|
}
|
|
values %$exists;
|
|
}
|
|
|
|
sub minimize_url {
|
|
my ($self) = @_;
|
|
return $self->url if ($self->url eq $self->{repos_root});
|
|
my $url = $self->{repos_root};
|
|
my @components = split(m!/!, $self->{svn_path});
|
|
my $c = '';
|
|
do {
|
|
$url = add_path_to_url($url, $c);
|
|
eval {
|
|
my $ra = (ref $self)->new($url);
|
|
my $latest = $ra->get_latest_revnum;
|
|
$ra->get_log("", $latest, 0, 1, 0, 1, sub {});
|
|
};
|
|
} while ($@ && defined($c = shift @components));
|
|
|
|
return canonicalize_url($url);
|
|
}
|
|
|
|
sub can_do_switch {
|
|
my $self = shift;
|
|
unless (defined $can_do_switch) {
|
|
my $pool = SVN::Pool->new;
|
|
my $rep = eval {
|
|
$self->do_switch(1, '', 0, $self->url,
|
|
SVN::Delta::Editor->new, $pool);
|
|
};
|
|
if ($@) {
|
|
$can_do_switch = 0;
|
|
} else {
|
|
$rep->abort_report($pool);
|
|
$can_do_switch = 1;
|
|
}
|
|
$pool->clear;
|
|
}
|
|
$can_do_switch;
|
|
}
|
|
|
|
sub skip_unknown_revs {
|
|
my ($err) = @_;
|
|
my $errno = $err->apr_err();
|
|
# Maybe the branch we're tracking didn't
|
|
# exist when the repo started, so it's
|
|
# not an error if it doesn't, just continue
|
|
#
|
|
# Wonderfully consistent library, eh?
|
|
# 160013 - svn:// and file://
|
|
# 175002 - http(s)://
|
|
# 175007 - http(s):// (this repo required authorization, too...)
|
|
# More codes may be discovered later...
|
|
if ($errno == 175007 || $errno == 175002 || $errno == 160013) {
|
|
my $err_key = $err->expanded_message;
|
|
# revision numbers change every time, filter them out
|
|
$err_key =~ s/\d+/\0/g;
|
|
$err_key = "$errno\0$err_key";
|
|
unless ($ignored_err{$err_key}) {
|
|
warn "W: Ignoring error from SVN, path probably ",
|
|
"does not exist: ($errno): ",
|
|
$err->expanded_message,"\n";
|
|
warn "W: Do not be alarmed at the above message ",
|
|
"git-svn is just searching aggressively for ",
|
|
"old history.\n",
|
|
"This may take a while on large repositories\n";
|
|
$ignored_err{$err_key} = 1;
|
|
}
|
|
return;
|
|
}
|
|
die "Error from SVN, ($errno): ", $err->expanded_message,"\n";
|
|
}
|
|
|
|
1;
|
|
__END__
|
|
|
|
=head1 NAME
|
|
|
|
Git::SVN::Ra - Subversion remote access functions for git-svn
|
|
|
|
=head1 SYNOPSIS
|
|
|
|
use Git::SVN::Ra;
|
|
|
|
my $ra = Git::SVN::Ra->new($branchurl);
|
|
my ($dirents, $fetched_revnum, $props) =
|
|
$ra->get_dir('.', $SVN::Core::INVALID_REVNUM);
|
|
|
|
=head1 DESCRIPTION
|
|
|
|
This is a wrapper around the L<SVN::Ra> module for use by B<git-svn>.
|
|
It fills in some default parameters (such as the authentication
|
|
scheme), smooths over incompatibilities between libsvn versions, adds
|
|
caching, and implements some functions specific to B<git-svn>.
|
|
|
|
Do not use it unless you are developing git-svn. The interface will
|
|
change as git-svn evolves.
|
|
|
|
=head1 DEPENDENCIES
|
|
|
|
Subversion perl bindings,
|
|
L<Git::SVN>.
|
|
|
|
C<Git::SVN::Ra> has not been tested using callers other than
|
|
B<git-svn> itself.
|
|
|
|
=head1 SEE ALSO
|
|
|
|
L<SVN::Ra>.
|
|
|
|
=head1 INCOMPATIBILITIES
|
|
|
|
None reported.
|
|
|
|
=head1 BUGS
|
|
|
|
None.
|