toke.c: Make sure things are initialized

[perl5.git] / t / io / crlf.t

diff --git a/t/io/crlf.t b/t/io/crlf.t
index 08ab4fe..7fb4c1e 100644 (file)
--- a/t/io/crlf.t
+++ b/t/io/crlf.t
@@ -2,43 +2,96 @@
 
 BEGIN {
     chdir 't' if -d 't';
-    @INC = qw(. ../lib);
+    require "./test.pl";
+    set_up_inc('../lib');
+    require "./charset_tools.pl";
+    skip_all_without_perlio();
 }
 
 use Config;
 
-require "test.pl";
 
-my $file = "crlf$$.dat";
-END {
- unlink($file);
-}
+my $file = tempfile();
+my $crlf = uni_to_native("\015\012");
+my $crcr = uni_to_native("\x0d\x0d");
 
-if (find PerlIO::Layer 'perlio') {
- plan(tests => 7);
- ok(open(FOO,">:crlf",$file));
- ok(print FOO 'a'.((('a' x 14).qq{\n}) x 2000) || close(FOO));
- ok(open(FOO,"<:crlf",$file));
+my $ungetc_count = 8200;    # Somewhat over the likely buffer size
 
- my $text;
- { local $/; $text = <FOO> }
- is(count_chars($text, "\015\012"), 0);
- is(count_chars($text, "\n"), 2000);
+{
+    plan(tests => 16 + 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));
 
- binmode(FOO);
- seek(FOO,0,0);
- { local $/; $text = <FOO> }
- is(count_chars($text, "\015\012"), 2000);
+    my $text;
+    { local $/; $text = <FOO> }
+    is(count_chars($text, $crlf), 0);
+    is(count_chars($text, "\n"), 2000);
 
- ok(close(FOO));
-}
-else {
- skip_all("No perlio, so no :crlf");
+    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/);
+       }
+    }
 }
 
 sub count_chars {
-  my($text, $chars) = @_;
-  my $seen = 0;
-  $seen++ while $text =~ /$chars/g;
-  return $seen;
+    my($text, $chars) = @_;
+    my $seen = 0;
+    $seen++ while $text =~ /$chars/g;
+    return $seen;
 }