This will make it possible to reuse packet reading and writing
functions in other test scripts.
Signed-off-by: Christian Couder <chrisc...@tuxfamily.org>
---
perl/Git/Packet.pm | 71 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 71 insertions(+)
create mode 100644 perl/Git/Packet.pm
diff --git a/perl/Git/Packet.pm b/perl/Git/Packet.pm
new file mode 100644
index 0000000000..aaffecbe2a
--- /dev/null
+++ b/perl/Git/Packet.pm
@@ -0,0 +1,71 @@
+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_bin_read
+ packet_txt_read
+ packet_bin_write
+ packet_txt_write
+ packet_flush
+ );
+our @EXPORT_OK = @EXPORT;
+
+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 packet_txt_read {
+ my ( $res, $buf ) = packet_bin_read();
+ unless ( $res == -1 || $buf =~ s/\n$// ) {
+ die "A non-binary line MUST be terminated by an LF.";
+ }
+ return ( $res, $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();
+}
--
2.13.1.565.gbfcd7a9048
