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APItest:t/utf8_setup.pl: Display printables as themselves
[perl5.git] / ext / XS-APItest / t / utf8_setup.pl
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1# Common subroutines and constants, called by .t files in this directory that
2# deal with UTF-8
3
4# The test files can't use byte_utf8a_to_utf8n() from t/charset_tools.pl
5# because that uses the same functions we are testing here. So UTF-EBCDIC
6# strings are hard-coded as I8 strings in this file instead, and we use the
7# translation functions to/from I8 from that file instead.
8
9sub isASCII { ord "A" == 65 }
10
e86447a3 11sub display_bytes_no_quotes {
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12 use bytes;
13 my $string = shift;
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14 return join("", map {
15 ($_ =~ /[[:print:]]/)
16 ? $_
17 : sprintf("\\x%02x", ord $_)
18 } split "", $string)
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19}
20
21sub display_bytes {
22 return '"' . display_bytes_no_quotes(shift) . '"';
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23}
24
25sub output_warnings(@) {
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26 my @list = @_;
27 if (@list) {
28 diag "The warnings were:\n" . join "\n", map { chomp; $_ } @list;
29 }
30 else {
31 diag "No warnings were raised";
32 }
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33}
34
35sub start_byte_to_cont($) {
36
37 # Extract the code point information from the input UTF-8 start byte, and
38 # return a continuation byte containing the same information. This is
39 # used in constructing an overlong malformation from valid input.
40
41 my $byte = shift;
42 my $len = test_UTF8_SKIP($byte);
43 if ($len < 2) {
44 die "start_byte_to_cont() is expecting a UTF-8 variant";
45 }
46
47 $byte = ord native_to_I8($byte);
48
49 # Copied from utf8.h. This gets rid of the leading 1 bits.
50 $byte &= ((($len) >= 7) ? 0x00 : (0x1F >> (($len)-2)));
51
52 $byte |= (isASCII) ? 0x80 : 0xA0;
53 return I8_to_native(chr $byte);
54}
55
56$::is64bit = length sprintf("%x", ~0) > 8;
57
dbb8d798 58$::lowest_continuation = (isASCII) ? 0x80 : 0xA0;
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59
60$::I8c = (isASCII) ? "\x80" : "\xa0"; # A continuation byte
61
62
63$::max_bytes = (isASCII) ? 13 : 14; # Max number of bytes in a UTF-8 sequence
64 # representing a single code point
65
66# Copied from utf8.h
67$::UTF8_ALLOW_EMPTY = 0x0001;
68$::UTF8_GOT_EMPTY = $UTF8_ALLOW_EMPTY;
69$::UTF8_ALLOW_CONTINUATION = 0x0002;
70$::UTF8_GOT_CONTINUATION = $UTF8_ALLOW_CONTINUATION;
71$::UTF8_ALLOW_NON_CONTINUATION = 0x0004;
72$::UTF8_GOT_NON_CONTINUATION = $UTF8_ALLOW_NON_CONTINUATION;
73$::UTF8_ALLOW_SHORT = 0x0008;
74$::UTF8_GOT_SHORT = $UTF8_ALLOW_SHORT;
75$::UTF8_ALLOW_LONG = 0x0010;
76$::UTF8_ALLOW_LONG_AND_ITS_VALUE = $UTF8_ALLOW_LONG|0x0020;
77$::UTF8_GOT_LONG = $UTF8_ALLOW_LONG;
78$::UTF8_ALLOW_OVERFLOW = 0x0080;
79$::UTF8_GOT_OVERFLOW = $UTF8_ALLOW_OVERFLOW;
80$::UTF8_DISALLOW_SURROGATE = 0x0100;
81$::UTF8_GOT_SURROGATE = $UTF8_DISALLOW_SURROGATE;
82$::UTF8_WARN_SURROGATE = 0x0200;
83$::UTF8_DISALLOW_NONCHAR = 0x0400;
84$::UTF8_GOT_NONCHAR = $UTF8_DISALLOW_NONCHAR;
85$::UTF8_WARN_NONCHAR = 0x0800;
86$::UTF8_DISALLOW_SUPER = 0x1000;
87$::UTF8_GOT_SUPER = $UTF8_DISALLOW_SUPER;
88$::UTF8_WARN_SUPER = 0x2000;
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89$::UTF8_DISALLOW_PERL_EXTENDED = 0x4000;
90$::UTF8_GOT_PERL_EXTENDED = $UTF8_DISALLOW_PERL_EXTENDED;
91$::UTF8_WARN_PERL_EXTENDED = 0x8000;
6aa905cf 92$::UTF8_CHECK_ONLY = 0x10000;
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93$::UTF8_NO_CONFIDENCE_IN_CURLEN_ = 0x20000;
94
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95$::UTF8_DISALLOW_ILLEGAL_C9_INTERCHANGE
96 = $UTF8_DISALLOW_SUPER|$UTF8_DISALLOW_SURROGATE;
97$::UTF8_DISALLOW_ILLEGAL_INTERCHANGE
98 = $UTF8_DISALLOW_ILLEGAL_C9_INTERCHANGE|$UTF8_DISALLOW_NONCHAR;
99$::UTF8_WARN_ILLEGAL_C9_INTERCHANGE
100 = $UTF8_WARN_SUPER|$UTF8_WARN_SURROGATE;
101$::UTF8_WARN_ILLEGAL_INTERCHANGE
102 = $UTF8_WARN_ILLEGAL_C9_INTERCHANGE|$UTF8_WARN_NONCHAR;
103
104# Test uvchr_to_utf8().
105$::UNICODE_WARN_SURROGATE = 0x0001;
106$::UNICODE_WARN_NONCHAR = 0x0002;
107$::UNICODE_WARN_SUPER = 0x0004;
d044b7a7 108$::UNICODE_WARN_PERL_EXTENDED = 0x0008;
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109$::UNICODE_DISALLOW_SURROGATE = 0x0010;
110$::UNICODE_DISALLOW_NONCHAR = 0x0020;
111$::UNICODE_DISALLOW_SUPER = 0x0040;
d044b7a7 112$::UNICODE_DISALLOW_PERL_EXTENDED = 0x0080;