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#!./perl -w
BEGIN {
chdir 't' if -d 't';
require "./test.pl";
set_up_inc('../lib');
require "./charset_tools.pl";
skip_all_without_perlio();
}
use Config;
my $file = tempfile();
my $crlf = uni_to_native("\015\012");
my $crcr = uni_to_native("\x0d\x0d");
my $ungetc_count = 8200; # Somewhat over the likely buffer size
{
plan(tests => 21 + 2 * $ungetc_count);
ok(open(FOO,">:crlf",$file));
ok(print FOO 'a'.((('a' x 14).qq{\n}) x 2000) || close(FOO));
ok(open(FOO,"<:crlf",$file));
my $text;
{ local $/; $text = <FOO> }
is(count_chars($text, $crlf), 0);
is(count_chars($text, "\n"), 2000);
binmode(FOO);
seek(FOO,0,0);
{ local $/; $text = <FOO> }
is(count_chars($text, $crlf), 2000);
SKIP:
{
skip_if_miniperl("miniperl can't rely on loading PerlIO::scalar",
2 * $ungetc_count + 1);
skip("no PerlIO::scalar", 2 * $ungetc_count + 1)
unless $Config{extensions} =~ m!\bPerlIO/scalar\b!;
require PerlIO::scalar;
my $fcontents = join "", map {"$_$crlf"} "a".."zzz";
open my $fh, "<:crlf", \$fcontents;
local $/ = "xxx";
local $_ = <$fh>;
my $pos = tell $fh; # pos must be behind "xxx", before "\nxxy\n"
seek $fh, $pos, 0;
$/ = "\n";
$s = <$fh>.<$fh>;
is($s, "\nxxy\n");
for my $i (0 .. $ungetc_count - 1) {
my $j = $i % 256;
is($fh->ungetc($j), $j, "ungetc of $j returns itself");
}
for (my $i = $ungetc_count - 1; $i >= 0; $i--) {
my $j = $i % 256;
is(ord($fh->getc()), $j, "getc gets back $j");
}
}
ok(close(FOO));
# binmode :crlf should not cumulate.
# Try it first once and then twice so that even UNIXy boxes
# get to exercise this, for DOSish boxes even once is enough.
# Try also pushing :utf8 first so that there are other layers
# in between (this should not matter: CRLF layers still should
# not accumulate).
for my $utf8 ('', ':utf8') {
for my $binmode (1..2) {
open(FOO, ">$file");
# require PerlIO; print PerlIO::get_layers(FOO), "\n";
binmode(FOO, "$utf8:crlf") for 1..$binmode;
# require PerlIO; print PerlIO::get_layers(FOO), "\n";
print FOO "Hello\n";
close FOO;
open(FOO, "<$file");
binmode(FOO);
my $foo = scalar <FOO>;
close FOO;
print join(" ", "#", map { sprintf("%02x", $_) } unpack("C*", $foo)),
"\n";
like($foo, qr/$crlf$/);
unlike($foo, qr/$crcr/);
}
}
{
# check binmode removes :utf8
# 133604 - on Win32 :crlf is the base buffer layer, so
# binmode doesn't remove it, but the binmode handler didn't
# remove :utf8 either
ok(open(my $fh, ">", $file), "open a file");
ok(binmode($fh, ":utf8"), "add :utf8");
ok((() = grep($_ eq "utf8", PerlIO::get_layers($fh))),
"check :utf8 set");
ok(binmode($fh), "remove :utf8");
ok(!(() = grep($_ eq "utf8", PerlIO::get_layers($fh))),
"check :utf8 removed");
close $fh;
}
}
sub count_chars {
my($text, $chars) = @_;
my $seen = 0;
$seen++ while $text =~ /$chars/g;
return $seen;
}
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