mirror of
https://github.com/git/git
synced 2024-10-30 14:03:28 +00:00
c6b0831c9c
A pathname value in a clean/smudge filter process "key=value" pair can
contain the '=' character (introduced in edcc858). Make the user aware
of this issue in the docs, add a corresponding test case, and fix the
issue in filter process value parser of the example implementation in
contrib.
Signed-off-by: Lars Schneider <larsxschneider@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
132 lines
3 KiB
Perl
Executable file
132 lines
3 KiB
Perl
Executable file
#!/usr/bin/perl
|
|
#
|
|
# Example implementation for the Git filter protocol version 2
|
|
# See Documentation/gitattributes.txt, section "Filter Protocol"
|
|
#
|
|
# Please note, this pass-thru filter is a minimal skeleton. No proper
|
|
# error handling was implemented.
|
|
#
|
|
|
|
use strict;
|
|
use warnings;
|
|
|
|
my $MAX_PACKET_CONTENT_SIZE = 65516;
|
|
|
|
sub packet_bin_read {
|
|
my $buffer;
|
|
my $bytes_read = read STDIN, $buffer, 4;
|
|
if ( $bytes_read == 0 ) {
|
|
|
|
# EOF - Git stopped talking to us!
|
|
exit();
|
|
}
|
|
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 ( $buf =~ s/\n$// ) {
|
|
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( $_[0] . "\n" );
|
|
}
|
|
|
|
sub packet_flush {
|
|
print STDOUT sprintf( "%04x", 0 );
|
|
STDOUT->flush();
|
|
}
|
|
|
|
( packet_txt_read() eq ( 0, "git-filter-client" ) ) || die "bad initialize";
|
|
( packet_txt_read() eq ( 0, "version=2" ) ) || die "bad version";
|
|
( packet_bin_read() eq ( 1, "" ) ) || die "bad version end";
|
|
|
|
packet_txt_write("git-filter-server");
|
|
packet_txt_write("version=2");
|
|
packet_flush();
|
|
|
|
( packet_txt_read() eq ( 0, "capability=clean" ) ) || die "bad capability";
|
|
( packet_txt_read() eq ( 0, "capability=smudge" ) ) || die "bad capability";
|
|
( packet_bin_read() eq ( 1, "" ) ) || die "bad capability end";
|
|
|
|
packet_txt_write("capability=clean");
|
|
packet_txt_write("capability=smudge");
|
|
packet_flush();
|
|
|
|
while (1) {
|
|
my ($command) = packet_txt_read() =~ /^command=(.+)$/;
|
|
my ($pathname) = packet_txt_read() =~ /^pathname=(.+)$/;
|
|
|
|
if ( $pathname eq "" ) {
|
|
die "bad pathname '$pathname'";
|
|
}
|
|
|
|
packet_bin_read();
|
|
|
|
my $input = "";
|
|
{
|
|
binmode(STDIN);
|
|
my $buffer;
|
|
my $done = 0;
|
|
while ( !$done ) {
|
|
( $done, $buffer ) = packet_bin_read();
|
|
$input .= $buffer;
|
|
}
|
|
}
|
|
|
|
my $output;
|
|
if ( $command eq "clean" ) {
|
|
### Perform clean here ###
|
|
$output = $input;
|
|
}
|
|
elsif ( $command eq "smudge" ) {
|
|
### Perform smudge here ###
|
|
$output = $input;
|
|
}
|
|
else {
|
|
die "bad command '$command'";
|
|
}
|
|
|
|
packet_txt_write("status=success");
|
|
packet_flush();
|
|
while ( length($output) > 0 ) {
|
|
my $packet = substr( $output, 0, $MAX_PACKET_CONTENT_SIZE );
|
|
packet_bin_write($packet);
|
|
if ( length($output) > $MAX_PACKET_CONTENT_SIZE ) {
|
|
$output = substr( $output, $MAX_PACKET_CONTENT_SIZE );
|
|
}
|
|
else {
|
|
$output = "";
|
|
}
|
|
}
|
|
packet_flush(); # flush content!
|
|
packet_flush(); # empty list, keep "status=success" unchanged!
|
|
|
|
}
|