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#!/usr/bin/perl
# Copyright (C) 2006, Eric Wong <normalperson@yhbt.net>
# License: GPL v2 or later
use 5.008;
use warnings;
use strict;
use vars qw/ $AUTHOR $VERSION
$sha1 $sha1_short $_revision $_repository
$_q $_authors $_authors_prog %users/;
$AUTHOR = 'Eric Wong <normalperson@yhbt.net>';
$VERSION = '@@GIT_VERSION@@';

# From which subdir have we been invoked?
my $cmd_dir_prefix = eval {
command_oneline([qw/rev-parse --show-prefix/], STDERR => 0)
} || '';

my $git_dir_user_set = 1 if defined $ENV{GIT_DIR};
$ENV{GIT_DIR} ||= '.git';
$Git::SVN::default_repo_id = 'svn';
$Git::SVN::default_ref_id = $ENV{GIT_SVN_ID} || 'git-svn';
$Git::SVN::Ra::_log_window_size = 100;
$Git::SVN::_minimize_url = 'unset';

if (! exists $ENV{SVN_SSH} && exists $ENV{GIT_SSH}) {
$ENV{SVN_SSH} = $ENV{GIT_SSH};
}

if (exists $ENV{SVN_SSH} && $^O eq 'msys') {
$ENV{SVN_SSH} =~ s/\\/\\\\/g;
$ENV{SVN_SSH} =~ s/(.*)/"$1"/;
}

$Git::SVN::Log::TZ = $ENV{TZ};
$ENV{TZ} = 'UTC';
$| = 1; # unbuffer STDOUT

sub fatal (@) { print STDERR "@_\n"; exit 1 }

# All SVN commands do it. Otherwise we may die on SIGPIPE when the remote
# repository decides to close the connection which we expect to be kept alive.
$SIG{PIPE} = 'IGNORE';

# Given a dot separated version number, "subtract" it from
# the SVN::Core::VERSION; non-negaitive return means the SVN::Core
# is at least at the version the caller asked for.
sub compare_svn_version {
my (@ours) = split(/\./, $SVN::Core::VERSION);
my (@theirs) = split(/\./, $_[0]);
my ($i, $diff);

for ($i = 0; $i < @ours && $i < @theirs; $i++) {
$diff = $ours[$i] - $theirs[$i];
return $diff if ($diff);
}
return 1 if ($i < @ours);
return -1 if ($i < @theirs);
return 0;
}

sub _req_svn {
require SVN::Core; # use()-ing this causes segfaults for me... *shrug*
require SVN::Ra;
require SVN::Delta;
if (::compare_svn_version('1.1.0') < 0) {
fatal "Need SVN::Core 1.1.0 or better (got $SVN::Core::VERSION)";
}
}
my $can_compress = eval { require Compress::Zlib; 1};
use Carp qw/croak/;
use Digest::MD5;
use IO::File qw//;
use File::Basename qw/dirname basename/;
use File::Path qw/mkpath/;
use File::Spec;
use File::Find;
use Getopt::Long qw/:config gnu_getopt no_ignore_case auto_abbrev/;
use IPC::Open3;
use Git;
use Git::SVN::Editor qw//;
use Git::SVN::Fetcher qw//;
use Git::SVN::Ra qw//;
use Git::SVN::Prompt qw//;
use Memoize; # core since 5.8.0, Jul 2002

BEGIN {
# import functions from Git into our packages, en masse
no strict 'refs';
foreach (qw/command command_oneline command_noisy command_output_pipe
command_input_pipe command_close_pipe
command_bidi_pipe command_close_bidi_pipe/) {
for my $package ( qw(Git::SVN::Migration Git::SVN::Log Git::SVN),
__PACKAGE__) {
*{"${package}::$_"} = \&{"Git::$_"};
}
}
Memoize::memoize 'Git::config';
Memoize::memoize 'Git::config_bool';
}

my ($SVN);

$sha1 = qr/[a-f\d]{40}/;
$sha1_short = qr/[a-f\d]{4,40}/;
my ($_stdin, $_help, $_edit,
$_message, $_file, $_branch_dest,
$_template, $_shared,
$_version, $_fetch_all, $_no_rebase, $_fetch_parent,
$_merge, $_strategy, $_preserve_merges, $_dry_run, $_local,
$_prefix, $_no_checkout, $_url, $_verbose,
$_git_format, $_commit_url, $_tag, $_merge_info, $_interactive);
$Git::SVN::_follow_parent = 1;
$Git::SVN::Fetcher::_placeholder_filename = ".gitignore";
$_q ||= 0;
my %remote_opts = ( 'username=s' => \$Git::SVN::Prompt::_username,
                    'config-dir=s' => \$Git::SVN::Ra::config_dir,
                    'no-auth-cache' => \$Git::SVN::Prompt::_no_auth_cache,
                    'ignore-paths=s' => \$Git::SVN::Fetcher::_ignore_regex,
                    'ignore-refs=s' => \$Git::SVN::Ra::_ignore_refs_regex );
my %fc_opts = ( 'follow-parent|follow!' => \$Git::SVN::_follow_parent,
'authors-file|A=s' => \$_authors,
'authors-prog=s' => \$_authors_prog,
'repack:i' => \$Git::SVN::_repack,
'noMetadata' => \$Git::SVN::_no_metadata,
'useSvmProps' => \$Git::SVN::_use_svm_props,
'useSvnsyncProps' => \$Git::SVN::_use_svnsync_props,
'log-window-size=i' => \$Git::SVN::Ra::_log_window_size,
'no-checkout' => \$_no_checkout,
'quiet|q+' => \$_q,
'repack-flags|repack-args|repack-opts=s' =>
\$Git::SVN::_repack_flags,
'use-log-author' => \$Git::SVN::_use_log_author,
'add-author-from' => \$Git::SVN::_add_author_from,
'localtime' => \$Git::SVN::_localtime,
%remote_opts );

my ($_trunk, @_tags, @_branches, $_stdlayout);
my %icv;
my %init_opts = ( 'template=s' => \$_template, 'shared:s' => \$_shared,
                  'trunk|T=s' => \$_trunk, 'tags|t=s@' => \@_tags,
                  'branches|b=s@' => \@_branches, 'prefix=s' => \$_prefix,
                  'stdlayout|s' => \$_stdlayout,
                  'minimize-url|m!' => \$Git::SVN::_minimize_url,
'no-metadata' => sub { $icv{noMetadata} = 1 },
'use-svm-props' => sub { $icv{useSvmProps} = 1 },
'use-svnsync-props' => sub { $icv{useSvnsyncProps} = 1 },
'rewrite-root=s' => sub { $icv{rewriteRoot} = $_[1] },
'rewrite-uuid=s' => sub { $icv{rewriteUUID} = $_[1] },
                  %remote_opts );
my %cmt_opts = ( 'edit|e' => \$_edit,
'rmdir' => \$Git::SVN::Editor::_rmdir,
'find-copies-harder' => \$Git::SVN::Editor::_find_copies_harder,
'l=i' => \$Git::SVN::Editor::_rename_limit,
'copy-similarity|C=i'=> \$Git::SVN::Editor::_cp_similarity
);

my %cmd = (
fetch => [ \&cmd_fetch, "Download new revisions from SVN",
{ 'revision|r=s' => \$_revision,
'fetch-all|all' => \$_fetch_all,
'parent|p' => \$_fetch_parent,
%fc_opts } ],
clone => [ \&cmd_clone, "Initialize and fetch revisions",
{ 'revision|r=s' => \$_revision,
'preserve-empty-dirs' =>
\$Git::SVN::Fetcher::_preserve_empty_dirs,
'placeholder-filename=s' =>
\$Git::SVN::Fetcher::_placeholder_filename,
%fc_opts, %init_opts } ],
init => [ \&cmd_init, "Initialize a repo for tracking" .
" (requires URL argument)",
\%init_opts ],
'multi-init' => [ \&cmd_multi_init,
"Deprecated alias for ".
"'$0 init -T<trunk> -b<branches> -t<tags>'",
\%init_opts ],
dcommit => [ \&cmd_dcommit,
'Commit several diffs to merge with upstream',
{ 'merge|m|M' => \$_merge,
'strategy|s=s' => \$_strategy,
'verbose|v' => \$_verbose,
'dry-run|n' => \$_dry_run,
'fetch-all|all' => \$_fetch_all,
'commit-url=s' => \$_commit_url,
'revision|r=i' => \$_revision,
'no-rebase' => \$_no_rebase,
'mergeinfo=s' => \$_merge_info,
'interactive|i' => \$_interactive,
%cmt_opts, %fc_opts } ],
branch => [ \&cmd_branch,
'Create a branch in the SVN repository',
{ 'message|m=s' => \$_message,
'destination|d=s' => \$_branch_dest,
'dry-run|n' => \$_dry_run,
'tag|t' => \$_tag,
'username=s' => \$Git::SVN::Prompt::_username,
'commit-url=s' => \$_commit_url } ],
tag => [ sub { $_tag = 1; cmd_branch(@_) },
'Create a tag in the SVN repository',
{ 'message|m=s' => \$_message,
'destination|d=s' => \$_branch_dest,
'dry-run|n' => \$_dry_run,
'username=s' => \$Git::SVN::Prompt::_username,
'commit-url=s' => \$_commit_url } ],
'set-tree' => [ \&cmd_set_tree,
"Set an SVN repository to a git tree-ish",
{ 'stdin' => \$_stdin, %cmt_opts, %fc_opts, } ],
'create-ignore' => [ \&cmd_create_ignore,
'Create a .gitignore per svn:ignore',
{ 'revision|r=i' => \$_revision
} ],
'mkdirs' => [ \&cmd_mkdirs ,
"recreate empty directories after a checkout",
{ 'revision|r=i' => \$_revision } ],
        'propget' => [ \&cmd_propget,
'Print the value of a property on a file or directory',
{ 'revision|r=i' => \$_revision } ],
        'proplist' => [ \&cmd_proplist,
'List all properties of a file or directory',
{ 'revision|r=i' => \$_revision } ],
'show-ignore' => [ \&cmd_show_ignore, "Show svn:ignore listings",
{ 'revision|r=i' => \$_revision
} ],
'show-externals' => [ \&cmd_show_externals, "Show svn:externals listings",
{ 'revision|r=i' => \$_revision
} ],
'multi-fetch' => [ \&cmd_multi_fetch,
"Deprecated alias for $0 fetch --all",
{ 'revision|r=s' => \$_revision, %fc_opts } ],
'migrate' => [ sub { },
# no-op, we automatically run this anyways,
'Migrate configuration/metadata/layout from
previous versions of git-svn',
                       { 'minimize' => \$Git::SVN::Migration::_minimize,
%remote_opts } ],
'log' => [ \&Git::SVN::Log::cmd_show_log, 'Show commit logs',
{ 'limit=i' => \$Git::SVN::Log::limit,
'revision|r=s' => \$_revision,
'verbose|v' => \$Git::SVN::Log::verbose,
'incremental' => \$Git::SVN::Log::incremental,
'oneline' => \$Git::SVN::Log::oneline,
'show-commit' => \$Git::SVN::Log::show_commit,
'non-recursive' => \$Git::SVN::Log::non_recursive,
'authors-file|A=s' => \$_authors,
'color' => \$Git::SVN::Log::color,
'pager=s' => \$Git::SVN::Log::pager
} ],
'find-rev' => [ \&cmd_find_rev,
"Translate between SVN revision numbers and tree-ish",
{} ],
'rebase' => [ \&cmd_rebase, "Fetch and rebase your working directory",
{ 'merge|m|M' => \$_merge,
'verbose|v' => \$_verbose,
'strategy|s=s' => \$_strategy,
'local|l' => \$_local,
'fetch-all|all' => \$_fetch_all,
'dry-run|n' => \$_dry_run,
'preserve-merges|p' => \$_preserve_merges,
%fc_opts } ],
'commit-diff' => [ \&cmd_commit_diff,
'Commit a diff between two trees',
{ 'message|m=s' => \$_message,
'file|F=s' => \$_file,
'revision|r=s' => \$_revision,
%cmt_opts } ],
'info' => [ \&cmd_info,
"Show info about the latest SVN revision
on the current branch",
{ 'url' => \$_url, } ],
'blame' => [ \&Git::SVN::Log::cmd_blame,
"Show what revision and author last modified each line of a file",
{ 'git-format' => \$_git_format } ],
'reset' => [ \&cmd_reset,
"Undo fetches back to the specified SVN revision",
{ 'revision|r=s' => \$_revision,
'parent|p' => \$_fetch_parent } ],
'gc' => [ \&cmd_gc,
"Compress unhandled.log files in .git/svn and remove " .
"index files in .git/svn",
{} ],
);

use Term::ReadLine;
package FakeTerm;
sub new {
my ($class, $reason) = @_;
return bless \$reason, shift;
}
sub readline {
my $self = shift;
die "Cannot use readline on FakeTerm: $$self";
}
package main;

my $term = eval {
$ENV{"GIT_SVN_NOTTY"}
? new Term::ReadLine 'git-svn', \*STDIN, \*STDOUT
: new Term::ReadLine 'git-svn';
};
if ($@) {
$term = new FakeTerm "$@: going non-interactive";
}

my $cmd;
for (my $i = 0; $i < @ARGV; $i++) {
if (defined $cmd{$ARGV[$i]}) {
$cmd = $ARGV[$i];
splice @ARGV, $i, 1;
last;
} elsif ($ARGV[$i] eq 'help') {
$cmd = $ARGV[$i+1];
usage(0);
}
};

# make sure we're always running at the top-level working directory
unless ($cmd && $cmd =~ /(?:clone|init|multi-init)$/) {
unless (-d $ENV{GIT_DIR}) {
if ($git_dir_user_set) {
die "GIT_DIR=$ENV{GIT_DIR} explicitly set, ",
"but it is not a directory\n";
}
my $git_dir = delete $ENV{GIT_DIR};
my $cdup = undef;
git_cmd_try {
$cdup = command_oneline(qw/rev-parse --show-cdup/);
$git_dir = '.' unless ($cdup);
chomp $cdup if ($cdup);
$cdup = "." unless ($cdup && length $cdup);
} "Already at toplevel, but $git_dir not found\n";
chdir $cdup or die "Unable to chdir up to '$cdup'\n";
unless (-d $git_dir) {
die "$git_dir still not found after going to ",
"'$cdup'\n";
}
$ENV{GIT_DIR} = $git_dir;
}
$_repository = Git->repository(Repository => $ENV{GIT_DIR});
}

my %opts = %{$cmd{$cmd}->[2]} if (defined $cmd);

read_git_config(\%opts);
if ($cmd && ($cmd eq 'log' || $cmd eq 'blame')) {
Getopt::Long::Configure('pass_through');
}
my $rv = GetOptions(%opts, 'h|H' => \$_help, 'version|V' => \$_version,
                    'minimize-connections' => \$Git::SVN::Migration::_minimize,
                    'id|i=s' => \$Git::SVN::default_ref_id,
                    'svn-remote|remote|R=s' => sub {
                       $Git::SVN::no_reuse_existing = 1;
                       $Git::SVN::default_repo_id = $_[1] });
exit 1 if (!$rv && $cmd && $cmd ne 'log');

usage(0) if $_help;
version() if $_version;
usage(1) unless defined $cmd;
load_authors() if $_authors;
if (defined $_authors_prog) {
$_authors_prog = "'" . File::Spec->rel2abs($_authors_prog) . "'";
}

unless ($cmd =~ /^(?:clone|init|multi-init|commit-diff)$/) {
Git::SVN::Migration::migration_check();
}
Git::SVN::init_vars();
eval {
Git::SVN::verify_remotes_sanity();
$cmd{$cmd}->[0]->(@ARGV);
};
fatal $@ if $@;
post_fetch_checkout();
exit 0;

####################### primary functions ######################
sub usage {
my $exit = shift || 0;
my $fd = $exit ? \*STDERR : \*STDOUT;
print $fd <<"";
git-svn - bidirectional operations between a single Subversion tree and git
Usage: git svn <command> [options] [arguments]\n

print $fd "Available commands:\n" unless $cmd;

foreach (sort keys %cmd) {
next if $cmd && $cmd ne $_;
next if /^multi-/; # don't show deprecated commands
print $fd ' ',pack('A17',$_),$cmd{$_}->[1],"\n";
foreach (sort keys %{$cmd{$_}->[2]}) {
# mixed-case options are for .git/config only
next if /[A-Z]/ && /^[a-z]+$/i;
# prints out arguments as they should be passed:
my $x = s#[:=]s$## ? '<arg>' : s#[:=]i$## ? '<num>' : '';
print $fd ' ' x 21, join(', ', map { length $_ > 1 ?
"--$_" : "-$_" }
split /\|/,$_)," $x\n";
}
}
print $fd <<"";
\nGIT_SVN_ID may be set in the environment or via the --id/-i switch to an
arbitrary identifier if you're tracking multiple SVN branches/repositories in
one git repository and want to keep them separate. See git-svn(1) for more
information.

exit $exit;
}

sub version {
::_req_svn();
print "git-svn version $VERSION (svn $SVN::Core::VERSION)\n";
exit 0;
}

sub ask {
my ($prompt, %arg) = @_;
my $valid_re = $arg{valid_re};
my $default = $arg{default};
my $resp;
my $i = 0;

if ( !( defined($term->IN)
&& defined( fileno($term->IN) )
&& defined( $term->OUT )
&& defined( fileno($term->OUT) ) ) ){
return defined($default) ? $default : undef;
}

while ($i++ < 10) {
$resp = $term->readline($prompt);
if (!defined $resp) { # EOF
print "\n";
return defined $default ? $default : undef;
}
if ($resp eq '' and defined $default) {
return $default;
}
if (!defined $valid_re or $resp =~ /$valid_re/) {
return $resp;
}
}
return undef;
}

sub do_git_init_db {
unless (-d $ENV{GIT_DIR}) {
my @init_db = ('init');
push @init_db, "--template=$_template" if defined $_template;
if (defined $_shared) {
if ($_shared =~ /[a-z]/) {
push @init_db, "--shared=$_shared";
} else {
push @init_db, "--shared";
}
}
command_noisy(@init_db);
$_repository = Git->repository(Repository => ".git");
}
my $set;
my $pfx = "svn-remote.$Git::SVN::default_repo_id";
foreach my $i (keys %icv) {
die "'$set' and '$i' cannot both be set\n" if $set;
next unless defined $icv{$i};
command_noisy('config', "$pfx.$i", $icv{$i});
$set = $i;
}
my $ignore_paths_regex = \$Git::SVN::Fetcher::_ignore_regex;
command_noisy('config', "$pfx.ignore-paths", $$ignore_paths_regex)
if defined $$ignore_paths_regex;
my $ignore_refs_regex = \$Git::SVN::Ra::_ignore_refs_regex;
command_noisy('config', "$pfx.ignore-refs", $$ignore_refs_regex)
if defined $$ignore_refs_regex;

if (defined $Git::SVN::Fetcher::_preserve_empty_dirs) {
my $fname = \$Git::SVN::Fetcher::_placeholder_filename;
command_noisy('config', "$pfx.preserve-empty-dirs", 'true');
command_noisy('config', "$pfx.placeholder-filename", $$fname);
}
}

sub init_subdir {
my $repo_path = shift or return;
mkpath([$repo_path]) unless -d $repo_path;
chdir $repo_path or die "Couldn't chdir to $repo_path: $!\n";
$ENV{GIT_DIR} = '.git';
$_repository = Git->repository(Repository => $ENV{GIT_DIR});
}

sub cmd_clone {
my ($url, $path) = @_;
if (!defined $path &&
(defined $_trunk || @_branches || @_tags ||
defined $_stdlayout) &&
$url !~ m#^[a-z\+]+://#) {
$path = $url;
}
$path = basename($url) if !defined $path || !length $path;
my $authors_absolute = $_authors ? File::Spec->rel2abs($_authors) : "";
cmd_init($url, $path);
command_oneline('config', 'svn.authorsfile', $authors_absolute)
if $_authors;
Git::SVN::fetch_all($Git::SVN::default_repo_id);
}

sub cmd_init {
if (defined $_stdlayout) {
$_trunk = 'trunk' if (!defined $_trunk);
@_tags = 'tags' if (! @_tags);
@_branches = 'branches' if (! @_branches);
}
if (defined $_trunk || @_branches || @_tags) {
return cmd_multi_init(@_);
}
my $url = shift or die "SVN repository location required ",
"as a command-line argument\n";
$url = canonicalize_url($url);
init_subdir(@_);
do_git_init_db();

if ($Git::SVN::_minimize_url eq 'unset') {
$Git::SVN::_minimize_url = 0;
}

Git::SVN->init($url);
}

sub cmd_fetch {
if (grep /^\d+=./, @_) {
die "'<rev>=<commit>' fetch arguments are ",
"no longer supported.\n";
}
my ($remote) = @_;
if (@_ > 1) {
die "Usage: $0 fetch [--all] [--parent] [svn-remote]\n";
}
$Git::SVN::no_reuse_existing = undef;
if ($_fetch_parent) {
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
unless ($gs) {
die "Unable to determine upstream SVN information from ",
"working tree history\n";
}
# just fetch, don't checkout.
$_no_checkout = 'true';
$_fetch_all ? $gs->fetch_all : $gs->fetch;
} elsif ($_fetch_all) {
cmd_multi_fetch();
} else {
$remote ||= $Git::SVN::default_repo_id;
Git::SVN::fetch_all($remote, Git::SVN::read_all_remotes());
}
}

sub cmd_set_tree {
my (@commits) = @_;
if ($_stdin || !@commits) {
print "Reading from stdin...\n";
@commits = ();
while (<STDIN>) {
if (/\b($sha1_short)\b/o) {
unshift @commits, $1;
}
}
}
my @revs;
foreach my $c (@commits) {
my @tmp = command('rev-parse',$c);
if (scalar @tmp == 1) {
push @revs, $tmp[0];
} elsif (scalar @tmp > 1) {
push @revs, reverse(command('rev-list',@tmp));
} else {
fatal "Failed to rev-parse $c";
}
}
my $gs = Git::SVN->new;
my ($r_last, $cmt_last) = $gs->last_rev_commit;
$gs->fetch;
if (defined $gs->{last_rev} && $r_last != $gs->{last_rev}) {
fatal "There are new revisions that were fetched ",
"and need to be merged (or acknowledged) ",
"before committing.\nlast rev: $r_last\n",
" current: $gs->{last_rev}";
}
$gs->set_tree($_) foreach @revs;
print "Done committing ",scalar @revs," revisions to SVN\n";
unlink $gs->{index};
}

sub split_merge_info_range {
my ($range) = @_;
if ($range =~ /(\d+)-(\d+)/) {
return (int($1), int($2));
} else {
return (int($range), int($range));
}
}

sub combine_ranges {
my ($in) = @_;

my @fnums = ();
my @arr = split(/,/, $in);
for my $element (@arr) {
my ($start, $end) = split_merge_info_range($element);
push @fnums, $start;
}

my @sorted = @arr [ sort {
$fnums[$a] <=> $fnums[$b]
} 0..$#arr ];

my @return = ();
my $last = -1;
my $first = -1;
for my $element (@sorted) {
my ($start, $end) = split_merge_info_range($element);

if ($last == -1) {
$first = $start;
$last = $end;
next;
}
if ($start <= $last+1) {
if ($end > $last) {
$last = $end;
}
next;
}
if ($first == $last) {
push @return, "$first";
} else {
push @return, "$first-$last";
}
$first = $start;
$last = $end;
}

if ($first != -1) {
if ($first == $last) {
push @return, "$first";
} else {
push @return, "$first-$last";
}
}

return join(',', @return);
}

sub merge_revs_into_hash {
my ($hash, $minfo) = @_;
my @lines = split(' ', $minfo);

for my $line (@lines) {
my ($branchpath, $revs) = split(/:/, $line);

if (exists($hash->{$branchpath})) {
# Merge the two revision sets
my $combined = "$hash->{$branchpath},$revs";
$hash->{$branchpath} = combine_ranges($combined);
} else {
# Just do range combining for consolidation
$hash->{$branchpath} = combine_ranges($revs);
}
}
}

sub merge_merge_info {
my ($mergeinfo_one, $mergeinfo_two) = @_;
my %result_hash = ();

merge_revs_into_hash(\%result_hash, $mergeinfo_one);
merge_revs_into_hash(\%result_hash, $mergeinfo_two);

my $result = '';
# Sort below is for consistency's sake
for my $branchname (sort keys(%result_hash)) {
my $revlist = $result_hash{$branchname};
$result .= "$branchname:$revlist\n"
}
return $result;
}

sub populate_merge_info {
my ($d, $gs, $uuid, $linear_refs, $rewritten_parent) = @_;

my %parentshash;
read_commit_parents(\%parentshash, $d);
my @parents = @{$parentshash{$d}};
if ($#parents > 0) {
# Merge commit
my $all_parents_ok = 1;
my $aggregate_mergeinfo = '';
my $rooturl = $gs->repos_root;

if (defined($rewritten_parent)) {
# Replace first parent with newly-rewritten version
shift @parents;
unshift @parents, $rewritten_parent;
}

foreach my $parent (@parents) {
my ($branchurl, $svnrev, $paruuid) =
cmt_metadata($parent);

unless (defined($svnrev)) {
# Should have been caught be preflight check
fatal "merge commit $d has ancestor $parent, but that change "
."does not have git-svn metadata!";
}
unless ($branchurl =~ /^\Q$rooturl\E(.*)/) {
fatal "commit $parent git-svn metadata changed mid-run!";
}
my $branchpath = $1;

my $ra = Git::SVN::Ra->new($branchurl);
my (undef, undef, $props) =
$ra->get_dir(canonicalize_path("."), $svnrev);
my $par_mergeinfo = $props->{'svn:mergeinfo'};
unless (defined $par_mergeinfo) {
$par_mergeinfo = '';
}
# Merge previous mergeinfo values
$aggregate_mergeinfo =
merge_merge_info($aggregate_mergeinfo,
$par_mergeinfo, 0);

next if $parent eq $parents[0]; # Skip first parent
# Add new changes being placed in tree by merge
my @cmd = (qw/rev-list --reverse/,
$parent, qw/--not/);
foreach my $par (@parents) {
unless ($par eq $parent) {
push @cmd, $par;
}
}
my @revsin = ();
my ($revlist, $ctx) = command_output_pipe(@cmd);
while (<$revlist>) {
my $irev = $_;
chomp $irev;
my (undef, $csvnrev, undef) =
cmt_metadata($irev);
unless (defined $csvnrev) {
# A child is missing SVN annotations...
# this might be OK, or might not be.
warn "W:child $irev is merged into revision "
."$d but does not have git-svn metadata. "
."This means git-svn cannot determine the "
."svn revision numbers to place into the "
."svn:mergeinfo property. You must ensure "
."a branch is entirely committed to "
."SVN before merging it in order for "
."svn:mergeinfo population to function "
."properly";
}
push @revsin, $csvnrev;
}
command_close_pipe($revlist, $ctx);

last unless $all_parents_ok;

# We now have a list of all SVN revnos which are
# merged by this particular parent. Integrate them.
next if $#revsin == -1;
my $newmergeinfo = "$branchpath:" . join(',', @revsin);
$aggregate_mergeinfo =
merge_merge_info($aggregate_mergeinfo,
$newmergeinfo, 1);
}
if ($all_parents_ok and $aggregate_mergeinfo) {
return $aggregate_mergeinfo;
}
}

return undef;
}

sub cmd_dcommit {
my $head = shift;
command_noisy(qw/update-index --refresh/);
git_cmd_try { command_oneline(qw/diff-index --quiet HEAD/) }
'Cannot dcommit with a dirty index. Commit your changes first, '
. "or stash them with `git stash'.\n";
$head ||= 'HEAD';

my $old_head;
if ($head ne 'HEAD') {
$old_head = eval {
command_oneline([qw/symbolic-ref -q HEAD/])
};
if ($old_head) {
$old_head =~ s{^refs/heads/}{};
} else {
$old_head = eval { command_oneline(qw/rev-parse HEAD/) };
}
command(['checkout', $head], STDERR => 0);
}

my @refs;
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD', \@refs);
unless ($gs) {
die "Unable to determine upstream SVN information from ",
"$head history.\nPerhaps the repository is empty.";
}

if (defined $_commit_url) {
$url = $_commit_url;
} else {
$url = eval { command_oneline('config', '--get',
"svn-remote.$gs->{repo_id}.commiturl") };
if (!$url) {
$url = $gs->full_pushurl
}
}

my $last_rev = $_revision if defined $_revision;
if ($url) {
print "Committing to $url ...\n";
}
my ($linear_refs, $parents) = linearize_history($gs, \@refs);
if ($_no_rebase && scalar(@$linear_refs) > 1) {
warn "Attempting to commit more than one change while ",
"--no-rebase is enabled.\n",
"If these changes depend on each other, re-running ",
"without --no-rebase may be required."
}

if (defined $_interactive){
my $ask_default = "y";
foreach my $d (@$linear_refs){
my ($fh, $ctx) = command_output_pipe(qw(show --summary), "$d");
while (<$fh>){
print $_;
}
command_close_pipe($fh, $ctx);
$_ = ask("Commit this patch to SVN? ([y]es (default)|[n]o|[q]uit|[a]ll): ",
valid_re => qr/^(?:yes|y|no|n|quit|q|all|a)/i,
default => $ask_default);
die "Commit this patch reply required" unless defined $_;
if (/^[nq]/i) {
exit(0);
} elsif (/^a/i) {
last;
}
}
}

my $expect_url = $url;

my $push_merge_info = eval {
command_oneline(qw/config --get svn.pushmergeinfo/)
};
if (not defined($push_merge_info)
or $push_merge_info eq "false"
or $push_merge_info eq "no"
or $push_merge_info eq "never") {
$push_merge_info = 0;
}

unless (defined($_merge_info) || ! $push_merge_info) {
# Preflight check of changes to ensure no issues with mergeinfo
# This includes check for uncommitted-to-SVN parents
# (other than the first parent, which we will handle),
# information from different SVN repos, and paths
# which are not underneath this repository root.
my $rooturl = $gs->repos_root;
foreach my $d (@$linear_refs) {
my %parentshash;
read_commit_parents(\%parentshash, $d);
my @realparents = @{$parentshash{$d}};
if ($#realparents > 0) {
# Merge commit
shift @realparents; # Remove/ignore first parent
foreach my $parent (@realparents) {
my ($branchurl, $svnrev, $paruuid) = cmt_metadata($parent);
unless (defined $paruuid) {
# A parent is missing SVN annotations...
# abort the whole operation.
fatal "$parent is merged into revision $d, "
."but does not have git-svn metadata. "
."Either dcommit the branch or use a "
."local cherry-pick, FF merge, or rebase "
."instead of an explicit merge commit.";
}

unless ($paruuid eq $uuid) {
# Parent has SVN metadata from different repository
fatal "merge parent $parent for change $d has "
."git-svn uuid $paruuid, while current change "
."has uuid $uuid!";
}

unless ($branchurl =~ /^\Q$rooturl\E(.*)/) {
# This branch is very strange indeed.
fatal "merge parent $parent for $d is on branch "
."$branchurl, which is not under the "
."git-svn root $rooturl!";
}
}
}
}
}

my $rewritten_parent;
Git::SVN::remove_username($expect_url);
if (defined($_merge_info)) {
$_merge_info =~ tr{ }{\n};
}
while (1) {
my $d = shift @$linear_refs or last;
unless (defined $last_rev) {
(undef, $last_rev, undef) = cmt_metadata("$d~1");
unless (defined $last_rev) {
fatal "Unable to extract revision information ",
"from commit $d~1";
}
}
if ($_dry_run) {
print "diff-tree $d~1 $d\n";
} else {
my $cmt_rev;

unless (defined($_merge_info) || ! $push_merge_info) {
$_merge_info = populate_merge_info($d, $gs,
$uuid,
$linear_refs,
$rewritten_parent);
}

my %ed_opts = ( r => $last_rev,
log => get_commit_entry($d)->{log},
ra => Git::SVN::Ra->new($url),
config => SVN::Core::config_get_config(
$Git::SVN::Ra::config_dir
),
tree_a => "$d~1",
tree_b => $d,
editor_cb => sub {
print "Committed r$_[0]\n";
$cmt_rev = $_[0];
},
mergeinfo => $_merge_info,
svn_path => '');
if (!Git::SVN::Editor->new(\%ed_opts)->apply_diff) {
print "No changes\n$d~1 == $d\n";
} elsif ($parents->{$d} && @{$parents->{$d}}) {
$gs->{inject_parents_dcommit}->{$cmt_rev} =
$parents->{$d};
}
$_fetch_all ? $gs->fetch_all : $gs->fetch;
$last_rev = $cmt_rev;
next if $_no_rebase;

# we always want to rebase against the current HEAD,
# not any head that was passed to us
my @diff = command('diff-tree', $d,
$gs->refname, '--');
my @finish;
if (@diff) {
@finish = rebase_cmd();
print STDERR "W: $d and ", $gs->refname,
" differ, using @finish:\n",
join("\n", @diff), "\n";
} else {
print "No changes between current HEAD and ",
$gs->refname,
"\nResetting to the latest ",
$gs->refname, "\n";
@finish = qw/reset --mixed/;
}
command_noisy(@finish, $gs->refname);

$rewritten_parent = command_oneline(qw/rev-parse HEAD/);

if (@diff) {
@refs = ();
my ($url_, $rev_, $uuid_, $gs_) =
working_head_info('HEAD', \@refs);
my ($linear_refs_, $parents_) =
linearize_history($gs_, \@refs);
if (scalar(@$linear_refs) !=
scalar(@$linear_refs_)) {
fatal "# of revisions changed ",
"\nbefore:\n",
join("\n", @$linear_refs),
"\n\nafter:\n",
join("\n", @$linear_refs_), "\n",
'If you are attempting to commit ',
"merges, try running:\n\t",
'git rebase --interactive',
'--preserve-merges ',
$gs->refname,
"\nBefore dcommitting";
}
if ($url_ ne $expect_url) {
if ($url_ eq $gs->metadata_url) {
print
"Accepting rewritten URL:",
" $url_\n";
} else {
fatal
"URL mismatch after rebase:",
" $url_ != $expect_url";
}
}
if ($uuid_ ne $uuid) {
fatal "uuid mismatch after rebase: ",
"$uuid_ != $uuid";
}
# remap parents
my (%p, @l, $i);
for ($i = 0; $i < scalar @$linear_refs; $i++) {
my $new = $linear_refs_->[$i] or next;
$p{$new} =
$parents->{$linear_refs->[$i]};
push @l, $new;
}
$parents = \%p;
$linear_refs = \@l;
}
}
}

if ($old_head) {
my $new_head = command_oneline(qw/rev-parse HEAD/);
my $new_is_symbolic = eval {
command_oneline(qw/symbolic-ref -q HEAD/);
};
if ($new_is_symbolic) {
print "dcommitted the branch ", $head, "\n";
} else {
print "dcommitted on a detached HEAD because you gave ",
"a revision argument.\n",
"The rewritten commit is: ", $new_head, "\n";
}
command(['checkout', $old_head], STDERR => 0);
}

unlink $gs->{index};
}

sub cmd_branch {
my ($branch_name, $head) = @_;

unless (defined $branch_name && length $branch_name) {
die(($_tag ? "tag" : "branch") . " name required\n");
}
$head ||= 'HEAD';

my (undef, $rev, undef, $gs) = working_head_info($head);
my $src = $gs->full_pushurl;

my $remote = Git::SVN::read_all_remotes()->{$gs->{repo_id}};
my $allglobs = $remote->{ $_tag ? 'tags' : 'branches' };
my $glob;
if ($#{$allglobs} == 0) {
$glob = $allglobs->[0];
} else {
unless(defined $_branch_dest) {
die "Multiple ",
$_tag ? "tag" : "branch",
" paths defined for Subversion repository.\n",
"You must specify where you want to create the ",
$_tag ? "tag" : "branch",
" with the --destination argument.\n";
}
foreach my $g (@{$allglobs}) {
my $re = Git::SVN::Editor::glob2pat($g->{path}->{left});
if ($_branch_dest =~ /$re/) {
$glob = $g;
last;
}
}
unless (defined $glob) {
my $dest_re = qr/\b\Q$_branch_dest\E\b/;
foreach my $g (@{$allglobs}) {
$g->{path}->{left} =~ /$dest_re/ or next;
if (defined $glob) {
die "Ambiguous destination: ",
$_branch_dest, "\nmatches both '",
$glob->{path}->{left}, "' and '",
$g->{path}->{left}, "'\n";
}
$glob = $g;
}
unless (defined $glob) {
die "Unknown ",
$_tag ? "tag" : "branch",
" destination $_branch_dest\n";
}
}
}
my ($lft, $rgt) = @{ $glob->{path} }{qw/left right/};
my $url;
if (defined $_commit_url) {
$url = $_commit_url;
} else {
$url = eval { command_oneline('config', '--get',
"svn-remote.$gs->{repo_id}.commiturl") };
if (!$url) {
$url = $remote->{pushurl} || $remote->{url};
}
}
my $dst = join '/', $url, $lft, $branch_name, ($rgt || ());

if ($dst =~ /^https:/ && $src =~ /^http:/) {
$src=~s/^http:/https:/;
}

::_req_svn();

my $ctx = SVN::Client->new(
auth => Git::SVN::Ra::_auth_providers(),
log_msg => sub {
${ $_[0] } = defined $_message
? $_message
: 'Create ' . ($_tag ? 'tag ' : 'branch ' )
. $branch_name;
},
);

eval {
$ctx->ls($dst, 'HEAD', 0);
} and die "branch ${branch_name} already exists\n";

print "Copying ${src} at r${rev} to ${dst}...\n";
$ctx->copy($src, $rev, $dst)
unless $_dry_run;

$gs->fetch_all;
}

sub cmd_find_rev {
my $revision_or_hash = shift or die "SVN or git revision required ",
"as a command-line argument\n";
my $result;
if ($revision_or_hash =~ /^r\d+$/) {
my $head = shift;
$head ||= 'HEAD';
my @refs;
my (undef, undef, $uuid, $gs) = working_head_info($head, \@refs);
unless ($gs) {
die "Unable to determine upstream SVN information from ",
"$head history\n";
}
my $desired_revision = substr($revision_or_hash, 1);
$result = $gs->rev_map_get($desired_revision, $uuid);
} else {
my (undef, $rev, undef) = cmt_metadata($revision_or_hash);
$result = $rev;
}
print "$result\n" if $result;
}

sub auto_create_empty_directories {
my ($gs) = @_;
my $var = eval { command_oneline('config', '--get', '--bool',
"svn-remote.$gs->{repo_id}.automkdirs") };
# By default, create empty directories by consulting the unhandled log,
# but allow setting it to 'false' to skip it.
return !($var && $var eq 'false');
}

sub cmd_rebase {
command_noisy(qw/update-index --refresh/);
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
unless ($gs) {
die "Unable to determine upstream SVN information from ",
"working tree history\n";
}
if ($_dry_run) {
print "Remote Branch: " . $gs->refname . "\n";
print "SVN URL: " . $url . "\n";
return;
}
if (command(qw/diff-index HEAD --/)) {
print STDERR "Cannot rebase with uncommited changes:\n";
command_noisy('status');
exit 1;
}
unless ($_local) {
# rebase will checkout for us, so no need to do it explicitly
$_no_checkout = 'true';
$_fetch_all ? $gs->fetch_all : $gs->fetch;
}
command_noisy(rebase_cmd(), $gs->refname);
if (auto_create_empty_directories($gs)) {
$gs->mkemptydirs;
}
}

sub cmd_show_ignore {
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
$gs ||= Git::SVN->new;
my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
$gs->prop_walk($gs->{path}, $r, sub {
my ($gs, $path, $props) = @_;
print STDOUT "\n# $path\n";
my $s = $props->{'svn:ignore'} or return;
$s =~ s/[\r\n]+/\n/g;
$s =~ s/^\n+//;
chomp $s;
$s =~ s#^#$path#gm;
print STDOUT "$s\n";
});
}

sub cmd_show_externals {
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
$gs ||= Git::SVN->new;
my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
$gs->prop_walk($gs->{path}, $r, sub {
my ($gs, $path, $props) = @_;
print STDOUT "\n# $path\n";
my $s = $props->{'svn:externals'} or return;
$s =~ s/[\r\n]+/\n/g;
chomp $s;
$s =~ s#^#$path#gm;
print STDOUT "$s\n";
});
}

sub cmd_create_ignore {
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
$gs ||= Git::SVN->new;
my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
$gs->prop_walk($gs->{path}, $r, sub {
my ($gs, $path, $props) = @_;
# $path is of the form /path/to/dir/
$path = '.' . $path;
# SVN can have attributes on empty directories,
# which git won't track
mkpath([$path]) unless -d $path;
my $ignore = $path . '.gitignore';
my $s = $props->{'svn:ignore'} or return;
open(GITIGNORE, '>', $ignore)
or fatal("Failed to open `$ignore' for writing: $!");
$s =~ s/[\r\n]+/\n/g;
$s =~ s/^\n+//;
chomp $s;
# Prefix all patterns so that the ignore doesn't apply
# to sub-directories.
$s =~ s#^#/#gm;
print GITIGNORE "$s\n";
close(GITIGNORE)
or fatal("Failed to close `$ignore': $!");
command_noisy('add', '-f', $ignore);
});
}

sub cmd_mkdirs {
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
$gs ||= Git::SVN->new;
$gs->mkemptydirs($_revision);
}

sub canonicalize_path {
my ($path) = @_;
my $dot_slash_added = 0;
if (substr($path, 0, 1) ne "/") {
$path = "./" . $path;
$dot_slash_added = 1;
}
# File::Spec->canonpath doesn't collapse x/../y into y (for a
# good reason), so let's do this manually.
$path =~ s#/+#/#g;
$path =~ s#/\.(?:/|$)#/#g;
$path =~ s#/[^/]+/\.\.##g;
$path =~ s#/$##g;
$path =~ s#^\./## if $dot_slash_added;
$path =~ s#^/##;
$path =~ s#^\.$##;
return $path;
}

sub canonicalize_url {
my ($url) = @_;
$url =~ s#^([^:]+://[^/]*/)(.*)$#$1 . canonicalize_path($2)#e;
return $url;
}

# get_svnprops(PATH)
# ------------------
# Helper for cmd_propget and cmd_proplist below.
sub get_svnprops {
my $path = shift;
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
$gs ||= Git::SVN->new;

# prefix THE PATH by the sub-directory from which the user
# invoked us.
$path = $cmd_dir_prefix . $path;
fatal("No such file or directory: $path") unless -e $path;
my $is_dir = -d $path ? 1 : 0;
$path = $gs->{path} . '/' . $path;

# canonicalize the path (otherwise libsvn will abort or fail to
# find the file)
$path = canonicalize_path($path);

my $r = (defined $_revision ? $_revision : $gs->ra->get_latest_revnum);
my $props;
if ($is_dir) {
(undef, undef, $props) = $gs->ra->get_dir($path, $r);
}
else {
(undef, $props) = $gs->ra->get_file($path, $r, undef);
}
return $props;
}

# cmd_propget (PROP, PATH)
# ------------------------
# Print the SVN property PROP for PATH.
sub cmd_propget {
my ($prop, $path) = @_;
$path = '.' if not defined $path;
usage(1) if not defined $prop;
my $props = get_svnprops($path);
if (not defined $props->{$prop}) {
fatal("`$path' does not have a `$prop' SVN property.");
}
print $props->{$prop} . "\n";
}

# cmd_proplist (PATH)
# -------------------
# Print the list of SVN properties for PATH.
sub cmd_proplist {
my $path = shift;
$path = '.' if not defined $path;
my $props = get_svnprops($path);
print "Properties on '$path':\n";
foreach (sort keys %{$props}) {
print " $_\n";
}
}

sub cmd_multi_init {
my $url = shift;
unless (defined $_trunk || @_branches || @_tags) {
usage(1);
}

$_prefix = '' unless defined $_prefix;
if (defined $url) {
$url = canonicalize_url($url);
init_subdir(@_);
}
do_git_init_db();
if (defined $_trunk) {
$_trunk =~ s#^/+##;
my $trunk_ref = 'refs/remotes/' . $_prefix . 'trunk';
# try both old-style and new-style lookups:
my $gs_trunk = eval { Git::SVN->new($trunk_ref) };
unless ($gs_trunk) {
my ($trunk_url, $trunk_path) =
complete_svn_url($url, $_trunk);
$gs_trunk = Git::SVN->init($trunk_url, $trunk_path,
undef, $trunk_ref);
}
}
return unless @_branches || @_tags;
my $ra = $url ? Git::SVN::Ra->new($url) : undef;
foreach my $path (@_branches) {
complete_url_ls_init($ra, $path, '--branches/-b', $_prefix);
}
foreach my $path (@_tags) {
complete_url_ls_init($ra, $path, '--tags/-t', $_prefix.'tags/');
}
}

sub cmd_multi_fetch {
$Git::SVN::no_reuse_existing = undef;
my $remotes = Git::SVN::read_all_remotes();
foreach my $repo_id (sort keys %$remotes) {
if ($remotes->{$repo_id}->{url}) {
Git::SVN::fetch_all($repo_id, $remotes);
}
}
}

# this command is special because it requires no metadata
sub cmd_commit_diff {
my ($ta, $tb, $url) = @_;
my $usage = "Usage: $0 commit-diff -r<revision> ".
"<tree-ish> <tree-ish> [<URL>]";
fatal($usage) if (!defined $ta || !defined $tb);
my $svn_path = '';
if (!defined $url) {
my $gs = eval { Git::SVN->new };
if (!$gs) {
fatal("Needed URL or usable git-svn --id in ",
"the command-line\n", $usage);
}
$url = $gs->{url};
$svn_path = $gs->{path};
}
unless (defined $_revision) {
fatal("-r|--revision is a required argument\n", $usage);
}
if (defined $_message && defined $_file) {
fatal("Both --message/-m and --file/-F specified ",
"for the commit message.\n",
"I have no idea what you mean");
}
if (defined $_file) {
$_message = file_to_s($_file);
} else {
$_message ||= get_commit_entry($tb)->{log};
}
my $ra ||= Git::SVN::Ra->new($url);
my $r = $_revision;
if ($r eq 'HEAD') {
$r = $ra->get_latest_revnum;
} elsif ($r !~ /^\d+$/) {
die "revision argument: $r not understood by git-svn\n";
}
my %ed_opts = ( r => $r,
log => $_message,
ra => $ra,
tree_a => $ta,
tree_b => $tb,
editor_cb => sub { print "Committed r$_[0]\n" },
svn_path => $svn_path );
if (!Git::SVN::Editor->new(\%ed_opts)->apply_diff) {
print "No changes\n$ta == $tb\n";
}
}

sub escape_uri_only {
my ($uri) = @_;
my @tmp;
foreach (split m{/}, $uri) {
s/([^~\w.%+-]|%(?![a-fA-F0-9]{2}))/sprintf("%%%02X",ord($1))/eg;
push @tmp, $_;
}
join('/', @tmp);
}

sub escape_url {
my ($url) = @_;
if ($url =~ m#^([^:]+)://([^/]*)(.*)$#) {
my ($scheme, $domain, $uri) = ($1, $2, escape_uri_only($3));
$url = "$scheme://$domain$uri";
}
$url;
}

sub cmd_info {
my $path = canonicalize_path(defined($_[0]) ? $_[0] : ".");
my $fullpath = canonicalize_path($cmd_dir_prefix . $path);
if (exists $_[1]) {
die "Too many arguments specified\n";
}

my ($file_type, $diff_status) = find_file_type_and_diff_status($path);

if (!$file_type && !$diff_status) {
print STDERR "svn: '$path' is not under version control\n";
exit 1;
}

my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
unless ($gs) {
die "Unable to determine upstream SVN information from ",
"working tree history\n";
}

# canonicalize_path() will return "" to make libsvn 1.5.x happy,
$path = "." if $path eq "";

my $full_url = $url . ($fullpath eq "" ? "" : "/$fullpath");

if ($_url) {
print escape_url($full_url), "\n";
return;
}

my $result = "Path: $path\n";
$result .= "Name: " . basename($path) . "\n" if $file_type ne "dir";
$result .= "URL: " . escape_url($full_url) . "\n";

eval {
my $repos_root = $gs->repos_root;
Git::SVN::remove_username($repos_root);
$result .= "Repository Root: " . escape_url($repos_root) . "\n";
};
if ($@) {
$result .= "Repository Root: (offline)\n";
}
::_req_svn();
$result .= "Repository UUID: $uuid\n" unless $diff_status eq "A" &&
(::compare_svn_version('1.5.4') <= 0 || $file_type ne "dir");
$result .= "Revision: " . ($diff_status eq "A" ? 0 : $rev) . "\n";

$result .= "Node Kind: " .
($file_type eq "dir" ? "directory" : "file") . "\n";

my $schedule = $diff_status eq "A"
? "add"
: ($diff_status eq "D" ? "delete" : "normal");
$result .= "Schedule: $schedule\n";

if ($diff_status eq "A") {
print $result, "\n";
return;
}

my ($lc_author, $lc_rev, $lc_date_utc);
my @args = Git::SVN::Log::git_svn_log_cmd($rev, $rev, "--", $fullpath);
my $log = command_output_pipe(@args);
my $esc_color = qr/(?:\033\[(?:(?:\d+;)*\d*)?m)*/;
while (<$log>) {
if (/^${esc_color}author (.+) <[^>]+> (\d+) ([\-\+]?\d+)$/o) {
$lc_author = $1;
$lc_date_utc = Git::SVN::Log::parse_git_date($2, $3);
} elsif (/^${esc_color} (git-svn-id:.+)$/o) {
(undef, $lc_rev, undef) = ::extract_metadata($1);
}
}
close $log;

Git::SVN::Log::set_local_timezone();

$result .= "Last Changed Author: $lc_author\n";
$result .= "Last Changed Rev: $lc_rev\n";
$result .= "Last Changed Date: " .
Git::SVN::Log::format_svn_date($lc_date_utc) . "\n";

if ($file_type ne "dir") {
my $text_last_updated_date =
($diff_status eq "D" ? $lc_date_utc : (stat $path)[9]);
$result .=
"Text Last Updated: " .
Git::SVN::Log::format_svn_date($text_last_updated_date) .
"\n";
my $checksum;
if ($diff_status eq "D") {
my ($fh, $ctx) =
command_output_pipe(qw(cat-file blob), "HEAD:$path");
if ($file_type eq "link") {
my $file_name = <$fh>;
$checksum = md5sum("link $file_name");
} else {
$checksum = md5sum($fh);
}
command_close_pipe($fh, $ctx);
} elsif ($file_type eq "link") {
my $file_name =
command(qw(cat-file blob), "HEAD:$path");
$checksum =
md5sum("link " . $file_name);
} else {
open FILE, "<", $path or die $!;
$checksum = md5sum(\*FILE);
close FILE or die $!;
}
$result .= "Checksum: " . $checksum . "\n";
}

print $result, "\n";
}

sub cmd_reset {
my $target = shift || $_revision or die "SVN revision required\n";
$target = $1 if $target =~ /^r(\d+)$/;
$target =~ /^\d+$/ or die "Numeric SVN revision expected\n";
my ($url, $rev, $uuid, $gs) = working_head_info('HEAD');
unless ($gs) {
die "Unable to determine upstream SVN information from ".
"history\n";
}
my ($r, $c) = $gs->find_rev_before($target, not $_fetch_parent);
die "Cannot find SVN revision $target\n" unless defined($c);
$gs->rev_map_set($r, $c, 'reset', $uuid);
print "r$r = $c ($gs->{ref_id})\n";
}

sub cmd_gc {
if (!$can_compress) {
warn "Compress::Zlib could not be found; unhandled.log " .
"files will not be compressed.\n";
}
find({ wanted => \&gc_directory, no_chdir => 1}, "$ENV{GIT_DIR}/svn");
}

########################### utility functions #########################

sub rebase_cmd {
my @cmd = qw/rebase/;
push @cmd, '-v' if $_verbose;
push @cmd, qw/--merge/ if $_merge;
push @cmd, "--strategy=$_strategy" if $_strategy;
push @cmd, "--preserve-merges" if $_preserve_merges;
@cmd;
}

sub post_fetch_checkout {
return if $_no_checkout;
my $gs = $Git::SVN::_head or return;
return if verify_ref('refs/heads/master^0');

# look for "trunk" ref if it exists
my $remote = Git::SVN::read_all_remotes()->{$gs->{repo_id}};
my $fetch = $remote->{fetch};
if ($fetch) {
foreach my $p (keys %$fetch) {
basename($fetch->{$p}) eq 'trunk' or next;
$gs = Git::SVN->new($fetch->{$p}, $gs->{repo_id}, $p);
last;
}
}

my $valid_head = verify_ref('HEAD^0');
command_noisy(qw(update-ref refs/heads/master), $gs->refname);
return if ($valid_head || !verify_ref('HEAD^0'));

return if $ENV{GIT_DIR} !~ m#^(?:.*/)?\.git$#;
my $index = $ENV{GIT_INDEX_FILE} || "$ENV{GIT_DIR}/index";
return if -f $index;

return if command_oneline(qw/rev-parse --is-inside-work-tree/) eq 'false';
return if command_oneline(qw/rev-parse --is-inside-git-dir/) eq 'true';
command_noisy(qw/read-tree -m -u -v HEAD HEAD/);
print STDERR "Checked out HEAD:\n ",
$gs->full_url, " r", $gs->last_rev, "\n";
if (auto_create_empty_directories($gs)) {
$gs->mkemptydirs($gs->last_rev);
}
}

sub complete_svn_url {
my ($url, $path) = @_;
$path =~ s#/+$##;
if ($path !~ m#^[a-z\+]+://#) {
if (!defined $url || $url !~ m#^[a-z\+]+://#) {
fatal("E: '$path' is not a complete URL ",
"and a separate URL is not specified");
}
return ($url, $path);
}
return ($path, '');
}

sub complete_url_ls_init {
my ($ra, $repo_path, $switch, $pfx) = @_;
unless ($repo_path) {
print STDERR "W: $switch not specified\n";
return;
}
$repo_path =~ s#/+$##;
if ($repo_path =~ m#^[a-z\+]+://#) {
$ra = Git::SVN::Ra->new($repo_path);
$repo_path = '';
} else {
$repo_path =~ s#^/+##;
unless ($ra) {
fatal("E: '$repo_path' is not a complete URL ",
"and a separate URL is not specified");
}
}
my $url = $ra->{url};
my $gs = Git::SVN->init($url, undef, undef, undef, 1);
my $k = "svn-remote.$gs->{repo_id}.url";
my $orig_url = eval { command_oneline(qw/config --get/, $k) };
if ($orig_url && ($orig_url ne $gs->{url})) {
die "$k already set: $orig_url\n",
"wanted to set to: $gs->{url}\n";
}
command_oneline('config', $k, $gs->{url}) unless $orig_url;
my $remote_path = "$gs->{path}/$repo_path";
$remote_path =~ s{%([0-9A-F]{2})}{chr hex($1)}ieg;
$remote_path =~ s#/+#/#g;
$remote_path =~ s#^/##g;
$remote_path .= "/*" if $remote_path !~ /\*/;
my ($n) = ($switch =~ /^--(\w+)/);
if (length $pfx && $pfx !~ m#/$#) {
die "--prefix='$pfx' must have a trailing slash '/'\n";
}
command_noisy('config',
'--add',
"svn-remote.$gs->{repo_id}.$n",
"$remote_path:refs/remotes/$pfx*" .
('/*' x (($remote_path =~ tr/*/*/) - 1)) );
}

sub verify_ref {
my ($ref) = @_;
eval { command_oneline([ 'rev-parse', '--verify', $ref ],
{ STDERR => 0 }); };
}

sub get_tree_from_treeish {
my ($treeish) = @_;
# $treeish can be a symbolic ref, too:
my $type = command_oneline(qw/cat-file -t/, $treeish);
my $expected;
while ($type eq 'tag') {
($treeish, $type) = command(qw/cat-file tag/, $treeish);
}
if ($type eq 'commit') {
$expected = (grep /^tree /, command(qw/cat-file commit/,
$treeish))[0];
($expected) = ($expected =~ /^tree ($sha1)$/o);
die "Unable to get tree from $treeish\n" unless $expected;
} elsif ($type eq 'tree') {
$expected = $treeish;
} else {
die "$treeish is a $type, expected tree, tag or commit\n";
}
return $expected;
}

sub get_commit_entry {
my ($treeish) = shift;
my %log_entry = ( log => '', tree => get_tree_from_treeish($treeish) );
my $commit_editmsg = "$ENV{GIT_DIR}/COMMIT_EDITMSG";
my $commit_msg = "$ENV{GIT_DIR}/COMMIT_MSG";
open my $log_fh, '>', $commit_editmsg or croak $!;

my $type = command_oneline(qw/cat-file -t/, $treeish);
if ($type eq 'commit' || $type eq 'tag') {
my ($msg_fh, $ctx) = command_output_pipe('cat-file',
$type, $treeish);
my $in_msg = 0;
my $author;
my $saw_from = 0;
my $msgbuf = "";
while (<$msg_fh>) {
if (!$in_msg) {
$in_msg = 1 if (/^\s*$/);
$author = $1 if (/^author (.*>)/);
} elsif (/^git-svn-id: /) {
# skip this for now, we regenerate the
# correct one on re-fetch anyways
# TODO: set *:merge properties or like...
} else {
if (/^From:/ || /^Signed-off-by:/) {
$saw_from = 1;
}
$msgbuf .= $_;
}
}
$msgbuf =~ s/\s+$//s;
if ($Git::SVN::_add_author_from && defined($author)
&& !$saw_from) {
$msgbuf .= "\n\nFrom: $author";
}
print $log_fh $msgbuf or croak $!;
command_close_pipe($msg_fh, $ctx);
}
close $log_fh or croak $!;

if ($_edit || ($type eq 'tree')) {
chomp(my $editor = command_oneline(qw(var GIT_EDITOR)));
system('sh', '-c', $editor.' "$@"', $editor, $commit_editmsg);
}
rename $commit_editmsg, $commit_msg or croak $!;
{
require Encode;
# SVN requires messages to be UTF-8 when entering the repo
local $/;
open $log_fh, '<', $commit_msg or croak $!;
binmode $log_fh;
chomp($log_entry{log} = <$log_fh>);

my $enc = Git::config('i18n.commitencoding') || 'UTF-8';
my $msg = $log_entry{log};

eval { $msg = Encode::decode($enc, $msg, 1) };
if ($@) {
die "Could not decode as $enc:\n", $msg,
"\nPerhaps you need to set i18n.commitencoding\n";
}

eval { $msg = Encode::encode('UTF-8', $msg, 1) };
die "Could not encode as UTF-8:\n$msg\n" if $@;

$log_entry{log} = $msg;

close $log_fh or croak $!;
}
unlink $commit_msg;
\%log_entry;
}

sub s_to_file {
my ($str, $file, $mode) = @_;
open my $fd,'>',$file or croak $!;
print $fd $str,"\n" or croak $!;
close $fd or croak $!;
chmod ($mode &~ umask, $file) if (defined $mode);
}

sub file_to_s {
my $file = shift;
open my $fd,'<',$file or croak "$!: file: $file\n";
local $/;
my $ret = <$fd>;
close $fd or croak $!;
$ret =~ s/\s*$//s;
return $ret;
}

# '<svn username> = real-name <email address>' mapping based on git-svnimport:
sub load_authors {
open my $authors, '<', $_authors or die "Can't open $_authors $!\n";
my $log = $cmd eq 'log';
while (<$authors>) {
chomp;
next unless /^(.+?|\(no author\))\s*=\s*(.+?)\s*<(.+)>\s*$/;
my ($user, $name, $email) = ($1, $2, $3);
if ($log) {
$Git::SVN::Log::rusers{"$name <$email>"} = $user;
} else {
$users{$user} = [$name, $email];
}
}
close $authors or croak $!;
}

# convert GetOpt::Long specs for use by git-config
sub read_git_config {
my $opts = shift;
my @config_only;
foreach my $o (keys %$opts) {
# if we have mixedCase and a long option-only, then
# it's a config-only variable that we don't need for
# the command-line.
push @config_only, $o if ($o =~ /[A-Z]/ && $o =~ /^[a-z]+$/i);
my $v = $opts->{$o};
my ($key) = ($o =~ /^([a-zA-Z\-]+)/);
$key =~ s/-//g;
my $arg = 'git config';
$arg .= ' --int' if ($o =~ /[:=]i$/);
$arg .= ' --bool' if ($o !~ /[:=][sfi]$/);
if (ref $v eq 'ARRAY') {
chomp(my @tmp = `$arg --get-all svn.$key`);
@$v = @tmp if @tmp;
} else {
chomp(my $tmp = `$arg --get svn.$key`);
if ($tmp && !($arg =~ / --bool/ && $tmp eq 'false')) {
$$v = $tmp;
}
}
}
delete @$opts{@config_only} if @config_only;
}

sub extract_metadata {
my $id = shift or return (undef, undef, undef);
my ($url, $rev, $uuid) = ($id =~ /^\s*git-svn-id:\s+(.*)\@(\d+)
\s([a-f\d\-]+)$/ix);
if (!defined $rev || !$uuid || !$url) {
# some of the original repositories I made had
# identifiers like this:
($rev, $uuid) = ($id =~/^\s*git-svn-id:\s(\d+)\@([a-f\d\-]+)/i);
}
return ($url, $rev, $uuid);
}

sub cmt_metadata {
return extract_metadata((grep(/^git-svn-id: /,
command(qw/cat-file commit/, shift)))[-1]);
}

sub cmt_sha2rev_batch {
my %s2r;
my ($pid, $in, $out, $ctx) = command_bidi_pipe(qw/cat-file --batch/);
my $list = shift;

foreach my $sha (@{$list}) {
my $first = 1;
my $size = 0;
print $out $sha, "\n";

while (my $line = <$in>) {
if ($first && $line =~ /^[[:xdigit:]]{40}\smissing$/) {
last;
} elsif ($first &&
$line =~ /^[[:xdigit:]]{40}\scommit\s(\d+)$/) {
$first = 0;
$size = $1;
next;
} elsif ($line =~ /^(git-svn-id: )/) {
my (undef, $rev, undef) =
extract_metadata($line);
$s2r{$sha} = $rev;
}

$size -= length($line);
last if ($size == 0);
}
}

command_close_bidi_pipe($pid, $in, $out, $ctx);

return \%s2r;
}

sub working_head_info {
my ($head, $refs) = @_;
my @args = qw/rev-list --first-parent --pretty=medium/;
my ($fh, $ctx) = command_output_pipe(@args, $head);
my $hash;
my %max;
while (<$fh>) {
if ( m{^commit ($::sha1)$} ) {
unshift @$refs, $hash if $hash and $refs;
$hash = $1;
next;
}
next unless s{^\s*(git-svn-id:)}{$1};
my ($url, $rev, $uuid) = extract_metadata($_);
if (defined $url && defined $rev) {
next if $max{$url} and $max{$url} < $rev;
if (my $gs = Git::SVN->find_by_url($url)) {
my $c = $gs->rev_map_get($rev, $uuid);
if ($c && $c eq $hash) {
close $fh; # break the pipe
return ($url, $rev, $uuid, $gs);
} else {
$max{$url} ||= $gs->rev_map_max;
}
}
}
}
command_close_pipe($fh, $ctx);
(undef, undef, undef, undef);
}

sub read_commit_parents {
my ($parents, $c) = @_;
chomp(my $p = command_oneline(qw/rev-list --parents -1/, $c));
$p =~ s/^($c)\s*// or die "rev-list --parents -1 $c failed!\n";
@{$parents->{$c}} = split(/ /, $p);
}

sub linearize_history {
my ($gs, $refs) = @_;
my %parents;
foreach my $c (@$refs) {
read_commit_parents(\%parents, $c);
}

my @linear_refs;
my %skip = ();
my $last_svn_commit = $gs->last_commit;
foreach my $c (reverse @$refs) {
next if $c eq $last_svn_commit;
last if $skip{$c};

unshift @linear_refs, $c;
$skip{$c} = 1;

# we only want the first parent to diff against for linear
# history, we save the rest to inject when we finalize the
# svn commit
my $fp_a = verify_ref("$c~1");
my $fp_b = shift @{$parents{$c}} if $parents{$c};
if (!$fp_a || !$fp_b) {
die "Commit $c\n",
"has no parent commit, and therefore ",
"nothing to diff against.\n",
"You should be working from a repository ",
"originally created by git-svn\n";
}
if ($fp_a ne $fp_b) {
die "$c~1 = $fp_a, however parsing commit $c ",
"revealed that:\n$c~1 = $fp_b\nBUG!\n";
}

foreach my $p (@{$parents{$c}}) {
$skip{$p} = 1;
}
}
(\@linear_refs, \%parents);
}

sub find_file_type_and_diff_status {
my ($path) = @_;
return ('dir', '') if $path eq '';

my $diff_output =
command_oneline(qw(diff --cached --name-status --), $path) || "";
my $diff_status = (split(' ', $diff_output))[0] || "";

my $ls_tree = command_oneline(qw(ls-tree HEAD), $path) || "";

return (undef, undef) if !$diff_status && !$ls_tree;

if ($diff_status eq "A") {
return ("link", $diff_status) if -l $path;
return ("dir", $diff_status) if -d $path;
return ("file", $diff_status);
}

my $mode = (split(' ', $ls_tree))[0] || "";

return ("link", $diff_status) if $mode eq "120000";
return ("dir", $diff_status) if $mode eq "040000";
return ("file", $diff_status);
}

sub md5sum {
my $arg = shift;
my $ref = ref $arg;
my $md5 = Digest::MD5->new();
        if ($ref eq 'GLOB' || $ref eq 'IO::File' || $ref eq 'File::Temp') {
$md5->addfile($arg) or croak $!;
} elsif ($ref eq 'SCALAR') {
$md5->add($$arg) or croak $!;
} elsif (!$ref) {
$md5->add($arg) or croak $!;
} else {
::fatal "Can't provide MD5 hash for unknown ref type: '", $ref, "'";
}
return $md5->hexdigest();
}

sub gc_directory {
if ($can_compress && -f $_ && basename($_) eq "unhandled.log") {
my $out_filename = $_ . ".gz";
open my $in_fh, "<", $_ or die "Unable to open $_: $!\n";
binmode $in_fh;
my $gz = Compress::Zlib::gzopen($out_filename, "ab") or
die "Unable to open $out_filename: $!\n";

my $res;
while ($res = sysread($in_fh, my $str, 1024)) {
$gz->gzwrite($str) or
die "Unable to write: ".$gz->gzerror()."!\n";
}
unlink $_ or die "unlink $File::Find::name: $!\n";
} elsif (-f $_ && basename($_) eq "index") {
unlink $_ or die "unlink $_: $!\n";
}
}

package Git::SVN;
use strict;
use warnings;
use Fcntl qw/:DEFAULT :seek/;
use constant rev_map_fmt => 'NH40';
use vars qw/$default_repo_id $default_ref_id $_no_metadata $_follow_parent
$_repack $_repack_flags $_use_svm_props $_head
$_use_svnsync_props $no_reuse_existing $_minimize_url
$_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 Time::Local;
use Memoize; # core since 5.8.0, Jul 2002
use Memoize::Storable;
use POSIX qw(:signal_h);
my $can_use_yaml;
BEGIN {
$can_use_yaml = eval { require Git::SVN::Memoize::YAML; 1};
}

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} = $2;
} elsif (m!^(.+)\.pushurl=\s*(.*)\s*$!) {
$r->{$1}->{pushurl} = $2;
} elsif (m!^(.+)\.ignore-refs=\s*(.*)\s*$!) {
$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);
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) = @_;
$url =~ s!/+$!!; # strip trailing slash
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};
$self->{path} = $url;
$self->{path} =~ s!^\Q$min_url\E(/|$)!!;
if (length $old_path) {
$self->{path} .= "/$old_path";
}
$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);
$self->{path} =~ s{^/}{};
$self->{path} =~ s{%([0-9A-F]{2})}{chr hex($1)}ieg;
command_noisy('config', '--add',
"svn-remote.$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) = @_;

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;
}
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\" ",
"\":$ref_id\$\" in config\n";
($self->{path}, undef) = split(/\s*:\s*/, $fetch);
}
$self->{path} =~ s{/+}{/}g;
$self->{path} =~ s{\A/}{};
$self->{path} =~ s{/\z}{};
$self->{url} = command_oneline('config', '--get',
"svn-remote.$repo_id.url") or
                  die "Failed to read \"svn-remote.$repo_id.url\" in config\n";
$self->{pushurl} = eval { command_oneline('config', '--get',
"svn-remote.$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 = $ra->{url};
$replace .= "/$path" if length $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 $path) {
unless ($tried{"$self->{url}/$path"}) {
return $ra if $self->read_svm_props($ra, $path, $r);
$tried{"$self->{url}/$path"} = 1;
}
$path =~ s#/?[^/]+$##;
}
die "Path: '$path' should be ''\n" if $path ne '';
return $ra if $self->read_svm_props($ra, $path, $r);
$tried{"$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 $path) {
unless ($tried{"$ra->{url}/$path"}) {
$ok = $self->read_svm_props($ra, $path, $r);
last if $ok;
$tried{"$ra->{url}/$path"} = 1;
}
$path =~ s#/?[^/]+$##;
}
die "Path: '$path' should be ''\n" if $path ne '';
$ok ||= $self->read_svm_props($ra, $path, $r);
$tried{"$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 ($self) = @_;
($self->rewrite_root || $self->{url}) .
(length $self->{path} ? '/' . $self->{path} : '');
}

sub full_url {
my ($self) = @_;
$self->{url} . (length $self->{path} ? '/' . $self->{path} : '');
}

sub full_pushurl {
my ($self) = @_;
if ($self->{pushurl}) {
return $self->{pushurl} . (length $self->{path} ? '/' .
$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 = $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;
}

sub get_tz {
# some systmes don't handle or mishandle %z, so be creative.
my $t = shift || time;
my $gm = timelocal(gmtime($t));
my $sign = qw( + + - )[ $t <=> $gm ];
return sprintf("%s%02d%02d", $sign, (gmtime(abs($t - $gm)))[2,1]);
}

# 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 o