xref: /openbsd/gnu/usr.bin/perl/t/io/layers.t (revision 3bef86f7) 
1#!./perl
2
3my $PERLIO;
4
5BEGIN {
6    chdir 't' if -d 't';
7    require './test.pl';
8    set_up_inc('../lib');
9    skip_all_without_perlio();
10    # FIXME - more of these could be tested without Encode or full perl
11    skip_all_without_dynamic_extension('Encode');
12
13    # Makes testing easier.
14    $ENV{PERLIO} = 'stdio' if exists $ENV{PERLIO} && $ENV{PERLIO} eq '';
15    skip_all("PERLIO='$ENV{PERLIO}' unknown")
16	if exists $ENV{PERLIO} && $ENV{PERLIO} !~ /^(stdio|perlio|mmap)$/;
17    $PERLIO = exists $ENV{PERLIO} ? $ENV{PERLIO} : "(undef)";
18}
19
20use Config;
21
22my $DOSISH    = $^O =~ /^(?:MSWin32|os2)$/ ? 1 : 0;
23my $NONSTDIO  = exists $ENV{PERLIO} && $ENV{PERLIO} ne 'stdio'     ? 1 : 0;
24my $FASTSTDIO = $Config{d_faststdio} && $Config{usefaststdio}      ? 1 : 0;
25my $UTF8_STDIN;
26if (${^UNICODE} & 1) {
27    if (${^UNICODE} & 64) {
28	# Conditional on the locale
29	$UTF8_STDIN = ${^UTF8LOCALE};
30    } else {
31	# Unconditional
32	$UTF8_STDIN = 1;
33    }
34} else {
35    $UTF8_STDIN = 0;
36}
37my $NTEST = 60 - (($DOSISH || !$FASTSTDIO) ? 7 : 0) - ($DOSISH ? 7 : 0)
38    + $UTF8_STDIN;
39
40sub PerlIO::F_UTF8 () { 0x00008000 } # from perliol.h
41
42plan tests => $NTEST;
43
44print <<__EOH__;
45# PERLIO        = $PERLIO
46# DOSISH        = $DOSISH
47# NONSTDIO      = $NONSTDIO
48# FASTSTDIO     = $FASTSTDIO
49# UNICODE       = ${^UNICODE}
50# UTF8LOCALE    = ${^UTF8LOCALE}
51# UTF8_STDIN = $UTF8_STDIN
52__EOH__
53
54{
55    sub check {
56	my ($result, $expected, $id) = @_;
57	# An interesting dance follows where we try to make the following
58	# IO layer stack setups to compare equal:
59	#
60	# PERLIO     UNIX-like                   DOS-like
61	#
62	# unset / "" unix perlio / stdio [1]     unix crlf
63	# stdio      unix perlio / stdio [1]     stdio
64	# perlio     unix perlio                 unix perlio
65	# mmap       unix mmap                   unix mmap
66	#
67	# [1] "stdio" if Configure found out how to do "fast stdio" (depends
68	# on the stdio implementation) and in Perl 5.8, otherwise "unix perlio"
69	#
70	if ($NONSTDIO) {
71	    # Get rid of "unix".
72	    shift @$result if $result->[0] eq "unix";
73	    # Change expectations.
74	    if ($FASTSTDIO) {
75		$expected->[0] = $ENV{PERLIO};
76	    } else {
77		$expected->[0] = $ENV{PERLIO} if $expected->[0] eq "stdio";
78	    }
79	} elsif (!$FASTSTDIO && !$DOSISH) {
80	    splice(@$result, 0, 2, "stdio")
81		if @$result >= 2 &&
82		   $result->[0] eq "unix" &&
83		   $result->[1] eq "perlio";
84	} elsif ($DOSISH) {
85	    splice(@$result, 0, 2, "stdio")
86		if @$result >= 2 &&
87		   $result->[0] eq "unix" &&
88		   $result->[1] eq "crlf";
89	}
90	if ($DOSISH && grep { $_ eq 'crlf' } @$expected) {
91	    # 5 tests potentially skipped because
92	    # DOSISH systems already have a CRLF layer
93	    # which will make new ones not stick.
94	    splice @$expected, 1, 1 if $expected->[1] eq 'crlf';
95	}
96	my $n = scalar @$expected;
97	is(scalar @$result, $n, "$id - layers == $n");
98	for (my $i = 0; $i < $n; $i++) {
99	    my $j = $expected->[$i];
100	    if (ref $j eq 'CODE') {
101		ok($j->($result->[$i]), "$id - $i is ok");
102	    } else {
103		is($result->[$i], $j,
104		   sprintf("$id - $i is %s",
105			   defined $j ? $j : "undef"));
106	    }
107	}
108    }
109
110    check([ PerlIO::get_layers(STDIN) ],
111	  $UTF8_STDIN ? [ "stdio", "utf8" ] : [ "stdio" ],
112	  "STDIN");
113
114    my $afile = tempfile();
115    open(F, ">:crlf", $afile);
116
117    check([ PerlIO::get_layers(F) ],
118	  [ qw(stdio crlf) ],
119	  "open :crlf");
120
121    binmode(F, ":crlf");
122
123    check([ PerlIO::get_layers(F) ],
124	  [ qw(stdio crlf) ],
125	  "binmode :crlf");
126
127    binmode(F, ":encoding(cp1047)");
128
129    check([ PerlIO::get_layers(F) ],
130	  [ qw[stdio crlf encoding(cp1047) utf8] ],
131	  ":encoding(cp1047)");
132
133    binmode(F, ":crlf");
134
135    check([ PerlIO::get_layers(F) ],
136	  [ qw[stdio crlf encoding(cp1047) utf8 crlf utf8] ],
137	  ":encoding(cp1047):crlf");
138
139    binmode(F, ":pop:pop");
140
141    check([ PerlIO::get_layers(F) ],
142	  [ qw(stdio crlf) ],
143	  ":pop");
144
145    binmode(F, ":raw");
146
147    check([ PerlIO::get_layers(F) ],
148	  [ "stdio" ],
149	  ":raw");
150
151    binmode(F, ":utf8");
152
153    check([ PerlIO::get_layers(F) ],
154	  [ qw(stdio utf8) ],
155	  ":utf8");
156
157    binmode(F, ":bytes");
158
159    check([ PerlIO::get_layers(F) ],
160	  [ "stdio" ],
161	  ":bytes");
162
163    binmode(F, ":encoding(utf8)");
164
165    check([ PerlIO::get_layers(F) ],
166	    [ qw[stdio encoding(utf8) utf8] ],
167	    ":encoding(utf8)");
168
169    binmode(F, ":raw :crlf");
170
171    check([ PerlIO::get_layers(F) ],
172	  [ qw(stdio crlf) ],
173	  ":raw:crlf");
174
175    binmode(F, ":raw :encoding(latin1)"); # "latin1" will be canonized
176
177    # 7 tests potentially skipped.
178    unless ($DOSISH || !$FASTSTDIO) {
179	my @results = PerlIO::get_layers(F, details => 1);
180
181	# Get rid of the args and the flags.
182	splice(@results, 1, 2) if $NONSTDIO;
183
184	check([ @results ],
185	      [ "stdio",    undef,        sub { $_[0] > 0 },
186		"encoding", "iso-8859-1", sub { $_[0] & PerlIO::F_UTF8() } ],
187	      ":raw:encoding(latin1)");
188    }
189
190    binmode(F);
191
192    check([ PerlIO::get_layers(F) ],
193	  [ "stdio" ],
194	  "binmode");
195
196    # RT78844
197    {
198        local $@ = "foo";
199        binmode(F, ":encoding(utf8)");
200        is( $@, "foo", '$@ not clobbered by binmode and :encoding');
201    }
202
203    close F;
204
205    {
206	use open(IN => ":crlf", OUT => ":encoding(cp1252)");
207
208	open F, '<', $afile;
209	open G, '>', $afile;
210
211	check([ PerlIO::get_layers(F, input  => 1) ],
212	      [ qw(stdio crlf) ],
213	      "use open IN");
214
215	check([ PerlIO::get_layers(G, output => 1) ],
216	      [ qw[stdio encoding(cp1252) utf8] ],
217	      "use open OUT");
218
219	close F;
220	close G;
221    }
222
223    # Check that PL_sigwarn's reference count is correct, and that
224    # &PerlIO::Layer::NoWarnings isn't prematurely freed.
225    fresh_perl_like (<<"EOT", qr/^CODE/, {}, "Check PL_sigwarn's reference count");
226open(UTF, "<:raw:encoding(utf8)", '$afile') or die \$!;
227print ref *PerlIO::Layer::NoWarnings{CODE};
228EOT
229
230    # [perl #97956] Not calling FETCH all the time on tied variables
231    my $f;
232    sub TIESCALAR { bless [] }
233    sub FETCH { ++$f; $_[0][0] = $_[1] }
234    sub STORE { $_[0][0] }
235    tie my $t, "";
236    $t = *f;
237    $f = 0; PerlIO::get_layers $t;
238    is $f, 1, '1 fetch on tied glob';
239    $t = \*f;
240    $f = 0; PerlIO::get_layers $t;
241    is $f, 1, '1 fetch on tied globref';
242    $t = *f;
243    $f = 0; PerlIO::get_layers \$t;
244    is $f, 1, '1 fetch on referenced tied glob';
245    $t = '';
246    $f = 0; PerlIO::get_layers $t;
247    is $f, 1, '1 fetch on tied string';
248
249    # No distinction between nums and strings
250    open "12", "<:crlf", "test.pl" or die "$0 cannot open test.pl: $!";
251    ok PerlIO::get_layers(12), 'str/num arguments are treated identically';
252}
253