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|
#!/usr/local/bin/perl -w
use strict ;
use File::Slurp ;
use Carp ;
use POSIX qw( :fcntl_h ) ;
use Socket ;
use Symbol ;
use Test::More ;
# in case SEEK_SET isn't defined in older perls. it seems to always be 0
BEGIN {
*SEEK_SET = sub() { 0 } unless defined \&SEEK_SET ;
}
my @pipe_data = (
'',
'abc',
'abc' x 100_000,
'abc' x 1_000_000,
) ;
plan( tests => scalar @pipe_data ) ;
#test_data_slurp() ;
#test_fork_pipe_slurp() ;
SKIP: {
eval { test_socketpair_slurp() } ;
skip "socketpair not found in this Perl", scalar( @pipe_data ) if $@ ;
}
sub test_socketpair_slurp {
foreach my $data ( @pipe_data ) {
my $size = length( $data ) ;
my $read_fh = gensym ;
my $write_fh = gensym ;
socketpair( $read_fh, $write_fh,
AF_UNIX, SOCK_STREAM, PF_UNSPEC);
if ( fork() ) {
#warn "PARENT SOCKET\n" ;
close( $write_fh ) ;
my $read_buf = read_file( $read_fh ) ;
is( $read_buf, $data,
"socket slurp/spew of $size bytes" ) ;
}
else {
#child
#warn "CHILD SOCKET\n" ;
close( $read_fh ) ;
eval { write_file( $write_fh, $data ) } ;
exit() ;
}
}
}
sub test_data_slurp {
my $data_seek = tell( \*DATA );
# first slurp in the lines
my @slurp_lines = read_file( \*DATA ) ;
# now seek back and read all the lines with the <> op and we make
# golden data sets
seek( \*DATA, $data_seek, SEEK_SET ) || die "seek $!" ;
my @data_lines = <DATA> ;
my $data_text = join( '', @data_lines ) ;
# now slurp in as one string and test
sysseek( \*DATA, $data_seek, SEEK_SET ) || die "seek $!" ;
my $slurp_text = read_file( \*DATA ) ;
is( $slurp_text, $data_text, 'scalar slurp DATA' ) ;
# test the array slurp
ok( eq_array( \@data_lines, \@slurp_lines ), 'list slurp of DATA' ) ;
}
sub test_fork_pipe_slurp {
foreach my $data ( @pipe_data ) {
test_to_pipe( $data ) ;
test_from_pipe( $data ) ;
}
}
sub test_from_pipe {
my( $data ) = @_ ;
my $size = length( $data ) ;
if ( pipe_from_fork( \*READ_FH ) ) {
# parent
my $read_buf = read_file( \*READ_FH ) ;
warn "PARENT read\n" ;
is( $read_buf, $data, "pipe slurp/spew of $size bytes" ) ;
close \*READ_FH ;
# return ;
}
else {
# child
warn "CHILD write\n" ;
# write_file( \*STDOUT, $data ) ;
syswrite( \*STDOUT, $data, length( $data ) ) ;
close \*STDOUT;
exit(0);
}
}
sub pipe_from_fork {
my ( $parent_fh ) = @_ ;
my $child = gensym ;
pipe( $parent_fh, $child ) or die;
my $pid = fork();
die "fork() failed: $!" unless defined $pid;
if ($pid) {
warn "PARENT\n" ;
close $child;
return $pid ;
}
warn "CHILD FILENO ", fileno($child), "\n" ;
close $parent_fh ;
open(STDOUT, ">&=" . fileno($child)) or die "no fileno" ;
return ;
}
sub test_to_pipe {
my( $data ) = @_ ;
my $size = length( $data ) ;
if ( pipe_to_fork( \*WRITE_FH ) ) {
# parent
syswrite( \*WRITE_FH, $data, length( $data ) ) ;
# write_file( \*WRITE_FH, $data ) ;
warn "PARENT write\n" ;
# is( $read_buf, $data, "pipe slurp/spew of $size bytes" ) ;
close \*WRITE_FH ;
# return ;
}
else {
# child
warn "CHILD read FILENO ", fileno(\*STDIN), "\n" ;
my $read_buf = read_file( \*STDIN ) ;
is( $read_buf, $data, "pipe slurp/spew of $size bytes" ) ;
close \*STDIN;
exit(0);
}
}
sub pipe_to_fork {
my ( $parent_fh ) = @_ ;
my $child = gensym ;
pipe( $child, $parent_fh ) or die ;
my $pid = fork();
die "fork() failed: $!" unless defined $pid;
if ( $pid ) {
close $child;
return $pid ;
}
close $parent_fh ;
open(STDIN, "<&=" . fileno($child)) or die;
return ;
}
__DATA__
line one
second line
more lines
still more
enough lines
we don't test long handle slurps from DATA since i would have to type
too much stuff :-)
so we will stop here
|
