1#!./perl -w 2 3BEGIN { 4 chdir 't' if -d 't'; 5 require "./test.pl"; 6 set_up_inc('../lib'); 7 require "./charset_tools.pl"; 8 skip_all_without_perlio(); 9} 10 11use Config; 12 13 14my $file = tempfile(); 15my $crlf = uni_to_native("\015\012"); 16my $crcr = uni_to_native("\x0d\x0d"); 17 18my $ungetc_count = 8200; # Somewhat over the likely buffer size 19 20{ 21 plan(tests => 21 + 2 * $ungetc_count); 22 ok(open(FOO,">:crlf",$file)); 23 ok(print FOO 'a'.((('a' x 14).qq{\n}) x 2000) || close(FOO)); 24 ok(open(FOO,"<:crlf",$file)); 25 26 my $text; 27 { local $/; $text = <FOO> } 28 is(count_chars($text, $crlf), 0); 29 is(count_chars($text, "\n"), 2000); 30 31 binmode(FOO); 32 seek(FOO,0,0); 33 { local $/; $text = <FOO> } 34 is(count_chars($text, $crlf), 2000); 35 36 SKIP: 37 { 38 skip_if_miniperl("miniperl can't rely on loading PerlIO::scalar", 39 2 * $ungetc_count + 1); 40 skip("no PerlIO::scalar", 2 * $ungetc_count + 1) 41 unless $Config{extensions} =~ m!\bPerlIO/scalar\b!; 42 require PerlIO::scalar; 43 my $fcontents = join "", map {"$_$crlf"} "a".."zzz"; 44 open my $fh, "<:crlf", \$fcontents; 45 local $/ = "xxx"; 46 local $_ = <$fh>; 47 my $pos = tell $fh; # pos must be behind "xxx", before "\nxxy\n" 48 seek $fh, $pos, 0; 49 $/ = "\n"; 50 $s = <$fh>.<$fh>; 51 is($s, "\nxxy\n"); 52 53 for my $i (0 .. $ungetc_count - 1) { 54 my $j = $i % 256; 55 is($fh->ungetc($j), $j, "ungetc of $j returns itself"); 56 } 57 58 for (my $i = $ungetc_count - 1; $i >= 0; $i--) { 59 my $j = $i % 256; 60 is(ord($fh->getc()), $j, "getc gets back $j"); 61 } 62 } 63 64 ok(close(FOO)); 65 66 # binmode :crlf should not cumulate. 67 # Try it first once and then twice so that even UNIXy boxes 68 # get to exercise this, for DOSish boxes even once is enough. 69 # Try also pushing :utf8 first so that there are other layers 70 # in between (this should not matter: CRLF layers still should 71 # not accumulate). 72 for my $utf8 ('', ':utf8') { 73 for my $binmode (1..2) { 74 open(FOO, ">$file"); 75 # require PerlIO; print PerlIO::get_layers(FOO), "\n"; 76 binmode(FOO, "$utf8:crlf") for 1..$binmode; 77 # require PerlIO; print PerlIO::get_layers(FOO), "\n"; 78 print FOO "Hello\n"; 79 close FOO; 80 open(FOO, "<$file"); 81 binmode(FOO); 82 my $foo = scalar <FOO>; 83 close FOO; 84 print join(" ", "#", map { sprintf("%02x", $_) } unpack("C*", $foo)), 85 "\n"; 86 like($foo, qr/$crlf$/); 87 unlike($foo, qr/$crcr/); 88 } 89 } 90 91 { 92 # check binmode removes :utf8 93 # 133604 - on Win32 :crlf is the base buffer layer, so 94 # binmode doesn't remove it, but the binmode handler didn't 95 # remove :utf8 either 96 ok(open(my $fh, ">", $file), "open a file"); 97 ok(binmode($fh, ":utf8"), "add :utf8"); 98 ok((() = grep($_ eq "utf8", PerlIO::get_layers($fh))), 99 "check :utf8 set"); 100 ok(binmode($fh), "remove :utf8"); 101 ok(!(() = grep($_ eq "utf8", PerlIO::get_layers($fh))), 102 "check :utf8 removed"); 103 close $fh; 104 } 105} 106 107sub count_chars { 108 my($text, $chars) = @_; 109 my $seen = 0; 110 $seen++ while $text =~ /$chars/g; 111 return $seen; 112} 113