diff options
Diffstat (limited to 'third_party/git/perl/Git/Packet.pm')
| -rw-r--r-- | third_party/git/perl/Git/Packet.pm | 173 |
1 files changed, 0 insertions, 173 deletions
diff --git a/third_party/git/perl/Git/Packet.pm b/third_party/git/perl/Git/Packet.pm deleted file mode 100644 index b75738bed4b5..000000000000 --- a/third_party/git/perl/Git/Packet.pm +++ /dev/null @@ -1,173 +0,0 @@ -package Git::Packet; -use 5.008; -use strict; -use warnings; -BEGIN { - require Exporter; - if ($] < 5.008003) { - *import = \&Exporter::import; - } else { - # Exporter 5.57 which supports this invocation was - # released with perl 5.8.3 - Exporter->import('import'); - } -} - -our @EXPORT = qw( - packet_compare_lists - packet_bin_read - packet_txt_read - packet_key_val_read - packet_bin_write - packet_txt_write - packet_flush - packet_initialize - packet_read_capabilities - packet_read_and_check_capabilities - packet_check_and_write_capabilities - ); -our @EXPORT_OK = @EXPORT; - -sub packet_compare_lists { - my ($expect, @result) = @_; - my $ix; - if (scalar @$expect != scalar @result) { - return undef; - } - for ($ix = 0; $ix < $#result; $ix++) { - if ($expect->[$ix] ne $result[$ix]) { - return undef; - } - } - return 1; -} - -sub packet_bin_read { - my $buffer; - my $bytes_read = read STDIN, $buffer, 4; - if ( $bytes_read == 0 ) { - # EOF - Git stopped talking to us! - return ( -1, "" ); - } elsif ( $bytes_read != 4 ) { - die "invalid packet: '$buffer'"; - } - my $pkt_size = hex($buffer); - if ( $pkt_size == 0 ) { - return ( 1, "" ); - } elsif ( $pkt_size > 4 ) { - my $content_size = $pkt_size - 4; - $bytes_read = read STDIN, $buffer, $content_size; - if ( $bytes_read != $content_size ) { - die "invalid packet ($content_size bytes expected; $bytes_read bytes read)"; - } - return ( 0, $buffer ); - } else { - die "invalid packet size: $pkt_size"; - } -} - -sub remove_final_lf_or_die { - my $buf = shift; - if ( $buf =~ s/\n$// ) { - return $buf; - } - die "A non-binary line MUST be terminated by an LF.\n" - . "Received: '$buf'"; -} - -sub packet_txt_read { - my ( $res, $buf ) = packet_bin_read(); - if ( $res != -1 and $buf ne '' ) { - $buf = remove_final_lf_or_die($buf); - } - return ( $res, $buf ); -} - -# Read a text packet, expecting that it is in the form "key=value" for -# the given $key. An EOF does not trigger any error and is reported -# back to the caller (like packet_txt_read() does). Die if the "key" -# part of "key=value" does not match the given $key, or the value part -# is empty. -sub packet_key_val_read { - my ( $key ) = @_; - my ( $res, $buf ) = packet_txt_read(); - if ( $res == -1 or ( $buf =~ s/^$key=// and $buf ne '' ) ) { - return ( $res, $buf ); - } - die "bad $key: '$buf'"; -} - -sub packet_bin_write { - my $buf = shift; - print STDOUT sprintf( "%04x", length($buf) + 4 ); - print STDOUT $buf; - STDOUT->flush(); -} - -sub packet_txt_write { - packet_bin_write( $_[0] . "\n" ); -} - -sub packet_flush { - print STDOUT sprintf( "%04x", 0 ); - STDOUT->flush(); -} - -sub packet_initialize { - my ($name, $version) = @_; - - packet_compare_lists([0, $name . "-client"], packet_txt_read()) || - die "bad initialize"; - packet_compare_lists([0, "version=" . $version], packet_txt_read()) || - die "bad version"; - packet_compare_lists([1, ""], packet_bin_read()) || - die "bad version end"; - - packet_txt_write( $name . "-server" ); - packet_txt_write( "version=" . $version ); - packet_flush(); -} - -sub packet_read_capabilities { - my @cap; - while (1) { - my ( $res, $buf ) = packet_bin_read(); - if ( $res == -1 ) { - die "unexpected EOF when reading capabilities"; - } - return ( $res, @cap ) if ( $res != 0 ); - $buf = remove_final_lf_or_die($buf); - unless ( $buf =~ s/capability=// ) { - die "bad capability buf: '$buf'"; - } - push @cap, $buf; - } -} - -# Read remote capabilities and check them against capabilities we require -sub packet_read_and_check_capabilities { - my @required_caps = @_; - my ($res, @remote_caps) = packet_read_capabilities(); - my %remote_caps = map { $_ => 1 } @remote_caps; - foreach (@required_caps) { - unless (exists($remote_caps{$_})) { - die "required '$_' capability not available from remote" ; - } - } - return %remote_caps; -} - -# Check our capabilities we want to advertise against the remote ones -# and then advertise our capabilities -sub packet_check_and_write_capabilities { - my ($remote_caps, @our_caps) = @_; - foreach (@our_caps) { - unless (exists($remote_caps->{$_})) { - die "our capability '$_' is not available from remote" - } - packet_txt_write( "capability=" . $_ ); - } - packet_flush(); -} - -1; |