This is a live mirror of the Perl 5 development currently hosted at https://github.com/perl/perl5
As using -C to turn on utf8 IO is equivalent to the open pragma,
[perl5.git] / t / io / layers.t
CommitLineData
39f7a870
JH
1#!./perl
2
046e4a6a
JH
3my $PERLIO;
4
39f7a870
JH
5BEGIN {
6 chdir 't' if -d 't';
7 @INC = '../lib';
8 require './test.pl';
491abfa0
JH
9 unless (find PerlIO::Layer 'perlio') {
10 print "1..0 # Skip: not perlio\n";
11 exit 0;
12 }
51dc4578
JH
13 eval 'use Encode';
14 if ($@ =~ /dynamic loading not available/) {
15 print "1..0 # miniperl cannot load Encode\n";
16 exit 0;
17 }
3b0db4f9
JH
18 # Makes testing easier.
19 $ENV{PERLIO} = 'stdio' if exists $ENV{PERLIO} && $ENV{PERLIO} eq '';
8d3a61d9 20 if (exists $ENV{PERLIO} && $ENV{PERLIO} !~ /^(stdio|perlio|mmap)$/) {
3b0db4f9 21 # We are not prepared for anything else.
8d3a61d9
JH
22 print "1..0 # PERLIO='$ENV{PERLIO}' unknown\n";
23 exit 0;
24 }
046e4a6a 25 $PERLIO = exists $ENV{PERLIO} ? $ENV{PERLIO} : "(undef)";
39f7a870
JH
26}
27
39f7a870
JH
28use Config;
29
538204d5 30my $DOSISH = $^O =~ /^(?:MSWin32|os2|dos|NetWare|mint)$/ ? 1 : 0;
cebd85e6 31 $DOSISH = 1 if !$DOSISH and $^O =~ /^uwin/;
15b61c98
JH
32my $NONSTDIO = exists $ENV{PERLIO} && $ENV{PERLIO} ne 'stdio' ? 1 : 0;
33my $FASTSTDIO = $Config{d_faststdio} && $Config{usefaststdio} ? 1 : 0;
7a403565
NC
34my $UNICODE_STDIN;
35if (${^UNICODE} & 1) {
36 if (${^UNICODE} & 64) {
37 # Conditional on the locale
38 $UNICODE_STDIN = ${^UTF8LOCALE};
39 } else {
40 # Unconditional
41 $UNICODE_STDIN = 1;
42 }
1031ca5c
SP
43} else {
44 $UNICODE_STDIN = 0;
7a403565 45}
9cfa90c0 46my $NTEST = 44 - (($DOSISH || !$FASTSTDIO) ? 7 : 0) - ($DOSISH ? 5 : 0)
aa451714 47 + $UNICODE_STDIN;
8229d19f 48
7c0e976d
JH
49sub PerlIO::F_UTF8 () { 0x00008000 } # from perliol.h
50
8229d19f
JH
51plan tests => $NTEST;
52
046e4a6a 53print <<__EOH__;
7a403565
NC
54# PERLIO = $PERLIO
55# DOSISH = $DOSISH
56# NONSTDIO = $NONSTDIO
57# FASTSTDIO = $FASTSTDIO
58# UNICODE = ${^UNICODE}
59# UTF8LOCALE = ${^UTF8LOCALE}
aa451714 60# UNICODE_STDIN = $UNICODE_STDIN
046e4a6a 61__EOH__
52f03692 62
491abfa0 63SKIP: {
43651d81 64 # FIXME - more of these could be tested without Encode or full perl
8229d19f 65 skip("This perl does not have Encode", $NTEST)
491abfa0 66 unless " $Config{extensions} " =~ / Encode /;
43651d81 67 skip("miniperl does not have Encode", $NTEST) if $ENV{PERL_CORE_MINITEST};
39f7a870
JH
68
69 sub check {
70 my ($result, $expected, $id) = @_;
3b0db4f9
JH
71 # An interesting dance follows where we try to make the following
72 # IO layer stack setups to compare equal:
73 #
f0fd62e2 74 # PERLIO UNIX-like DOS-like
3b0db4f9 75 #
f0fd62e2
JH
76 # unset / "" unix perlio / stdio [1] unix crlf
77 # stdio unix perlio / stdio [1] stdio
78 # perlio unix perlio unix perlio
79 # mmap unix mmap unix mmap
3b0db4f9 80 #
f0fd62e2
JH
81 # [1] "stdio" if Configure found out how to do "fast stdio" (depends
82 # on the stdio implementation) and in Perl 5.8, otherwise "unix perlio"
046e4a6a 83 #
52f03692 84 if ($NONSTDIO) {
79d9a4d7
JH
85 # Get rid of "unix".
86 shift @$result if $result->[0] eq "unix";
fb189484 87 # Change expectations.
046e4a6a
JH
88 if ($FASTSTDIO) {
89 $expected->[0] = $ENV{PERLIO};
90 } else {
91 $expected->[0] = $ENV{PERLIO} if $expected->[0] eq "stdio";
92 }
e29b014f 93 } elsif (!$FASTSTDIO && !$DOSISH) {
046e4a6a
JH
94 splice(@$result, 0, 2, "stdio")
95 if @$result >= 2 &&
96 $result->[0] eq "unix" &&
97 $result->[1] eq "perlio";
79d9a4d7
JH
98 } elsif ($DOSISH) {
99 splice(@$result, 0, 2, "stdio")
046e4a6a
JH
100 if @$result >= 2 &&
101 $result->[0] eq "unix" &&
79d9a4d7 102 $result->[1] eq "crlf";
fb189484 103 }
8229d19f
JH
104 if ($DOSISH && grep { $_ eq 'crlf' } @$expected) {
105 # 5 tests potentially skipped because
106 # DOSISH systems already have a CRLF layer
107 # which will make new ones not stick.
108 @$expected = grep { $_ ne 'crlf' } @$expected;
109 }
79d9a4d7 110 my $n = scalar @$expected;
e662ed2b 111 is(scalar @$result, $n, "$id - layers == $n");
39f7a870
JH
112 for (my $i = 0; $i < $n; $i++) {
113 my $j = $expected->[$i];
114 if (ref $j eq 'CODE') {
fb189484 115 ok($j->($result->[$i]), "$id - $i is ok");
39f7a870
JH
116 } else {
117 is($result->[$i], $j,
8d3a61d9
JH
118 sprintf("$id - $i is %s",
119 defined $j ? $j : "undef"));
39f7a870
JH
120 }
121 }
122 }
123
124 check([ PerlIO::get_layers(STDIN) ],
aa451714 125 $UNICODE_STDIN ? [ "stdio", "utf8" ] : [ "stdio" ],
39f7a870
JH
126 "STDIN");
127
128 open(F, ">:crlf", "afile");
129
130 check([ PerlIO::get_layers(F) ],
131 [ qw(stdio crlf) ],
132 "open :crlf");
133
134 binmode(F, ":encoding(sjis)"); # "sjis" will be canonized to "shiftjis"
135
136 check([ PerlIO::get_layers(F) ],
137 [ qw[stdio crlf encoding(shiftjis) utf8] ],
138 ":encoding(sjis)");
139
140 binmode(F, ":pop");
141
142 check([ PerlIO::get_layers(F) ],
143 [ qw(stdio crlf) ],
144 ":pop");
145
146 binmode(F, ":raw");
147
148 check([ PerlIO::get_layers(F) ],
149 [ "stdio" ],
150 ":raw");
151
152 binmode(F, ":utf8");
153
154 check([ PerlIO::get_layers(F) ],
155 [ qw(stdio utf8) ],
156 ":utf8");
157
158 binmode(F, ":bytes");
159
160 check([ PerlIO::get_layers(F) ],
161 [ "stdio" ],
162 ":bytes");
163
164 binmode(F, ":encoding(utf8)");
165
166 check([ PerlIO::get_layers(F) ],
167 [ qw[stdio encoding(utf8) utf8] ],
168 ":encoding(utf8)");
169
170 binmode(F, ":raw :crlf");
171
172 check([ PerlIO::get_layers(F) ],
173 [ qw(stdio crlf) ],
174 ":raw:crlf");
175
176 binmode(F, ":raw :encoding(latin1)"); # "latin1" will be canonized
177
8229d19f
JH
178 # 7 tests potentially skipped.
179 unless ($DOSISH || !$FASTSTDIO) {
fb189484
JH
180 my @results = PerlIO::get_layers(F, details => 1);
181
79d9a4d7
JH
182 # Get rid of the args and the flags.
183 splice(@results, 1, 2) if $NONSTDIO;
fb189484
JH
184
185 check([ @results ],
186 [ "stdio", undef, sub { $_[0] > 0 },
187 "encoding", "iso-8859-1", sub { $_[0] & PerlIO::F_UTF8() } ],
188 ":raw:encoding(latin1)");
189 }
39f7a870
JH
190
191 binmode(F);
192
193 check([ PerlIO::get_layers(F) ],
194 [ "stdio" ],
195 "binmode");
196
197 close F;
198
199 {
200 use open(IN => ":crlf", OUT => ":encoding(cp1252)");
491abfa0 201
39f7a870
JH
202 open F, "<afile";
203 open G, ">afile";
204
205 check([ PerlIO::get_layers(F, input => 1) ],
206 [ qw(stdio crlf) ],
207 "use open IN");
208
209 check([ PerlIO::get_layers(G, output => 1) ],
210 [ qw[stdio encoding(cp1252) utf8] ],
211 "use open OUT");
212
213 close F;
214 close G;
215 }
216
9cfa90c0
NC
217 # Check that PL_sigwarn's reference count is correct, and that
218 # &PerlIO::Layer::NoWarnings isn't prematurely freed.
219 fresh_perl_like (<<'EOT', qr/^CODE/);
8958c744 220open(UTF, "<:raw:encoding(utf8)", "afile") or die $!;
9cfa90c0
NC
221print ref *PerlIO::Layer::NoWarnings{CODE};
222EOT
223
39f7a870
JH
224 1 while unlink "afile";
225}