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S_utf16_textfilter() was not returning EOF correctly in some situations.
[perl5.git] / t / comp / utf.t
CommitLineData
61ad1ccd 1#!./perl -w
7aa207d6 2
d2d1d4de 3print "1..4016\n";
61ad1ccd 4my $test = 0;
7aa207d6 5
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NC
6my %templates = (
7 utf8 => 'C0U',
8 utf16be => 'n',
9 utf16le => 'v',
10 );
11
12sub bytes_to_utf {
13 my ($enc, $content, $do_bom) = @_;
14 my $template = $templates{$enc};
15 die "Unsupported encoding $enc" unless $template;
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NC
16 my @chars = unpack "U*", $content;
17 if ($enc ne 'utf8') {
18 # Make surrogate pairs
19 my @remember_that_utf_16_is_variable_length;
20 foreach my $ord (@chars) {
21 if ($ord < 0x10000) {
22 push @remember_that_utf_16_is_variable_length,
23 $ord;
24 } else {
25 $ord -= 0x10000;
26 push @remember_that_utf_16_is_variable_length,
27 (0xD800 | ($ord >> 10)), (0xDC00 | ($ord & 0x3FF));
28 }
29 }
30 @chars = @remember_that_utf_16_is_variable_length;
31 }
32 return pack "$template*", ($do_bom ? 0xFEFF : ()), @chars;
5c7da53c 33}
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34
35sub test {
02512a66 36 my ($enc, $write, $expect, $bom, $nl, $name) = @_;
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37 open my $fh, ">", "utf$$.pl" or die "utf.pl: $!";
38 binmode $fh;
02512a66 39 print $fh bytes_to_utf($enc, $write . ($nl ? "\n" : ''), $bom);
5c7da53c 40 close $fh or die $!;
2d90ac95 41 my $got = do "./utf$$.pl";
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NC
42 $test = $test + 1;
43 if (!defined $got) {
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NC
44 print "not ok $test # $enc $bom $nl $name; got undef\n";
45 } elsif ($got ne $expect) {
46 print "not ok $test # $enc $bom $nl $name; got '$got'\n";
61ad1ccd 47 } else {
02512a66 48 print "ok $test # $enc $bom $nl $name\n";
61ad1ccd 49 }
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50}
51
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NC
52for my $bom (0, 1) {
53 for my $enc (qw(utf16le utf16be utf8)) {
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54 for my $nl (1, 0) {
55 for my $value (123, 1234, 12345) {
56 test($enc, $value, $value, $bom, $nl, $value);
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57 # This has the unfortunate side effect of causing an infinite
58 # loop without the bug fix it corresponds to:
59 test($enc, "($value)", $value, $bom, $nl, "($value)");
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NC
60 }
61 next if $enc eq 'utf8';
62 # Arguably a bug that currently string literals from UTF-8 file
63 # handles are not implicitly "use utf8", but don't FIXME that
64 # right now, as here we're testing the input filter itself.
65
66 for my $expect ("N", "\xFF", "\x{100}", "\x{010a}", "\x{0a23}",
b3766b12 67 "\x{10000}", "\x{64321}", "\x{10FFFD}",
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68 "\x{1000a}", # 0xD800 0xDC0A
69 "\x{12800}", # 0xD80A 0xDC00
02512a66 70 ) {
b3766b12 71 # A space so that the UTF-16 heuristic triggers - " '" gives two
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NC
72 # characters of ASCII.
73 my $write = " '$expect'";
74 my $name = 'chrs ' . join ', ', map {ord $_} split '', $expect;
75 test($enc, $write, $expect, $bom, $nl, $name);
c28d6105 76 }
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NC
77
78 # This is designed to try to trip over the end of the buffer,
79 # with similar results to U-1000A and U-12800 above.
80 for my $pad (2 .. 162) {
81 for my $chr ("\x{10000}", "\x{1000a}", "\x{12800}") {
82 my $padding = ' ' x $pad;
83 # Need 4 octets that were from 2 ASCII characters to trigger
84 # the heuristic that detects UTF-16 without a BOM. For
85 # UTF-16BE, one space and the newline will do, as the
86 # newline's high octet comes first. But for UTF-16LE, a
87 # newline is "\n\0", so it doesn't trigger it.
88 test($enc, " \n$padding'$chr'", $chr, $bom, $nl,
89 sprintf "'\\x{%x}' with $pad spaces before it", ord $chr);
90 }
91 }
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92 }
93 }
94}
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95
96END {
2d90ac95 97 1 while unlink "utf$$.pl";
7aa207d6 98}