# Test the /a, /d, etc regex modifiers
BEGIN {
chdir 't' if -d 't';
@INC = qw '../lib ../dist/if';
require './test.pl';
require './loc_tools.pl';
}
use strict;
use warnings;
no warnings 'locale'; # Some /l tests use above-latin1 chars to make sure
# they work, even though they warn.
use Config;
plan('no_plan');
# Each case is a valid element of its hash key. Choose, where available, an
# ASCII-range, Latin-1 non-ASCII range, and above Latin1 range code point.
my %testcases = (
'\w' => [ ord("A"), utf8::unicode_to_native(0xE2), 0x16B ], # Below expects these to all be alpha
'\d' => [ ord("0"), 0x0662 ],
'\s' => [ ord("\t"), utf8::unicode_to_native(0xA0), 0x1680 ], # Below expects these to be [:blank:]
'[:cntrl:]' => [ utf8::unicode_to_native(0x00), utf8::unicode_to_native(0x88) ],
'[:graph:]' => [ ord("&"), utf8::unicode_to_native(0xF7), 0x02C7 ], # Below expects these to be
# [:print:]
'[:lower:]' => [ ord("g"), utf8::unicode_to_native(0xE3), 0x0127 ],
'[:punct:]' => [ ord('`'), ord('^'), ord('~'), ord('<'), ord('='), ord('>'), ord('|'), ord('-'), ord(','), ord(';'), ord(':'), ord('!'), ord('?'), ord('/'), ord('.'), ord('"'), ord('('), ord(')'), ord('['), ord(']'), ord('{'), ord('}'), ord('@'), ord('$'), ord('*'), ord('\\'), ord('&'), ord('#'), ord('%'), ord('+'), ord("'"), utf8::unicode_to_native(0xBF), 0x055C ],
'[:upper:]' => [ ord("G"), utf8::unicode_to_native(0xC3), 0x0126 ],
'[:xdigit:]' => [ ord("4"), 0xFF15 ],
);
$testcases{'[:digit:]'} = $testcases{'\d'};
$testcases{'[:alnum:]'} = $testcases{'\w'};
$testcases{'[:alpha:]'} = $testcases{'\w'};
$testcases{'[:blank:]'} = $testcases{'\s'};
$testcases{'[:print:]'} = $testcases{'[:graph:]'};
$testcases{'[:space:]'} = $testcases{'\s'};
$testcases{'[:word:]'} = $testcases{'\w'};
my $utf8_locale;
my @charsets = qw(a d u aa);
if (! is_miniperl() && locales_enabled('LC_CTYPE')) {
require POSIX;
my $current_locale = POSIX::setlocale( &POSIX::LC_ALL, "C") // "";
if ($current_locale eq 'C') {
# test for d_setlocale is repeated here because this one is compile
# time, and the one above is run time
use if $Config{d_setlocale}, 'locale';
# Some implementations don't have the 128-255 range characters all
# mean nothing under the C locale (an example being VMS). This is
# legal, but since we don't know what the right answers should be,
# skip the locale tests in that situation.
for my $i (128 .. 255) {
goto skip_adding_C_locale
if chr(utf8::unicode_to_native($i)) =~ /[[:print:]]/;
}
push @charsets, 'l';
skip_adding_C_locale:
# Use a pseudo-modifier 'L' to indicate to use /l with a UTF-8 locale
$utf8_locale = find_utf8_ctype_locale();
push @charsets, 'L' if defined $utf8_locale;
}
}
# For each possible character set...
foreach my $charset (@charsets) {
my $locale;
my $charset_mod = lc $charset;
my $charset_display;
if ($charset_mod eq 'l') {
$locale = POSIX::setlocale(&POSIX::LC_ALL, ($charset eq 'l')
? "C"
: $utf8_locale
);
die "Couldn't change locale" unless $locale;
$charset_display = $charset_mod . " ($locale)";
}
else {
$charset_display = $charset_mod;
}
# And in utf8 or not
foreach my $upgrade ("", 'utf8::upgrade($a); ') {
# reverse gets the, \w, \s, \d first.
for my $class (reverse sort keys %testcases) {
# The complement of \w is \W; of [:posix:] is [:^posix:]
my $complement = $class;
if ($complement !~ s/ ( \[: ) /$1^/x) {
$complement = uc($class);
}
# For each test case
foreach my $ord (@{$testcases{$class}}) {
my $char = chr($ord);
$char = ($char eq '$') ? '\$' : display($char);
# > 255 already implies upgraded. Skip the ones that don't
# have an explicit upgrade. This shows more clearly in the
# output which tests are in utf8, or not.
next if $ord > 255 && ! $upgrade;
my $reason = ""; # Explanation output with each test
my $neg_reason = "";
my $match = 1; # Calculated whether test regex should
# match or not
# Everything always matches in ASCII, or under /u, or under /l
# with a UTF-8 locale
if (utf8::native_to_unicode($ord) < 128
|| $charset eq 'u'
|| $charset eq 'L')
{
$reason = "\"$char\" is a $class under /$charset_display";
$neg_reason = "\"$char\" is not a $complement under /$charset_display";
}
elsif ($charset eq "a" || $charset eq "aa") {
$match = 0;
$reason = "\"$char\" is non-ASCII, which can't be a $class under /$charset_display";
$neg_reason = "\"$char\" is non-ASCII, which is a $complement under /$charset_display";
}
elsif ($ord > 255) {
$reason = "\"$char\" is a $class under /$charset_display";
$neg_reason = "\"$char\" is not a $complement under /$charset_display";
}
elsif ($charset eq 'l') {
# We are using the C locale, which is essentially ASCII,
# but under utf8, the above-latin1 chars are treated as
# Unicode)
$reason = "\"$char\" is not a $class in the C locale under /$charset_mod";
$neg_reason = "\"$char\" is a $complement in the C locale under /$charset_mod";
$match = 0;
}
elsif ($upgrade) {
$reason = "\"$char\" is a $class in utf8 under /$charset_display";
$neg_reason = "\"$char\" is not a $complement in utf8 under /$charset_display";
}
else {
$reason = "\"$char\" is above-ASCII latin1, which requires utf8 to be a $class under /$charset_display";
$neg_reason = "\"$char\" is above-ASCII latin1, which is a $complement under /$charset_display (unless in utf8)";
$match = 0;
}
$reason = "; $reason" if $reason;
$neg_reason = "; $neg_reason" if $neg_reason;
my $op;
my $neg_op;
if ($match) {
$op = '=~';
$neg_op = '!~';
}
else {
$op = '!~';
$neg_op = '=~';
}
# In [...] or not
foreach my $bracketed (0, 1) {
my $lb = "";
my $rb = "";
if ($bracketed) {
# Adds an extra char to the character class to make sure
# that the class doesn't get optimized away.
$lb = ($bracketed) ? '[_' : "";
$rb = ($bracketed) ? ']' : "";
}
else { # [:posix:] must be inside outer [ ]
next if $class =~ /\[/;
}
my $length = 10; # For regexec.c regrepeat() cases by
# matching more than one item
# Test both class and its complement, and with one or more
# than one item to match.
foreach my $eval (
qq[my \$a = "$char"; $upgrade\$a $op qr/ (?$charset_mod: $lb$class$rb ) /x],
qq[my \$a = "$char" x $length; $upgrade\$a $op qr/ (?$charset_mod: $lb$class$rb\{$length} ) /x],
) {
ok (eval $eval, $eval . $reason);
}
foreach my $eval (
qq[my \$a = "$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: $lb$complement$rb ) /x],
qq[my \$a = "$char" x $length; $upgrade\$a $neg_op qr/ (?$charset_mod: $lb$complement$rb\{$length} ) /x],
) {
ok (eval $eval, $eval . $neg_reason);
}
}
next if $class ne '\w';
# Test \b, \B at beginning and end of string
foreach my $eval (
qq[my \$a = "$char"; $upgrade\$a $op qr/ (?$charset_mod: ^ \\b . ) /x],
qq[my \$a = "$char"; $upgrade\$a $op qr/ (?$charset_mod: . \\b \$) /x],
) {
ok (eval $eval, $eval . $reason);
}
foreach my $eval (
qq[my \$a = "$char"; $upgrade\$a $neg_op qr/(?$charset_mod: ^ \\B . ) /x],
qq[my \$a = "$char"; $upgrade\$a $neg_op qr/(?$charset_mod: . \\B \$ ) /x],
) {
ok (eval $eval, $eval . $neg_reason);
}
# Test \b, \B adjacent to a non-word char, both before it and
# after. We test with ASCII, Latin1 and Unicode non-word chars
foreach my $space_ord (@{$testcases{'\s'}}) {
# Useless to try to test non-utf8 when the ord itself
# forces utf8
next if $space_ord > 255 && ! $upgrade;
my $space = display(chr $space_ord);
foreach my $eval (
qq[my \$a = "$space$char"; $upgrade\$a $op qr/ (?$charset_mod: . \\b . ) /x],
qq[my \$a = "$char$space"; $upgrade\$a $op qr/ (?$charset_mod: . \\b . ) /x],
) {
ok (eval $eval, $eval . $reason . "; \"$space\" is not a \\w");
}
foreach my $eval (
qq[my \$a = "$space$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: . \\B . ) /x],
qq[my \$a = "$char$space"; $upgrade\$a $neg_op qr/ (?$charset_mod: . \\B . ) /x],
) {
ok (eval $eval, $eval . $neg_reason . "; \"$space\" is not a \\w");
}
}
# Test \b, \B in the middle of two nominally word chars, but
# one or both may be considered non-word depending on range
# and charset.
foreach my $other_ord (@{$testcases{'\w'}}) {
next if $other_ord > 255 && ! $upgrade;
my $other = display(chr $other_ord);
# Determine if the other char is a word char in current
# circumstances
my $other_is_word = 1;
my $other_reason = "\"$other\" is a $class under /$charset_display";
my $other_neg_reason = "\"$other\" is not a $complement under /$charset_display";
if (utf8::native_to_unicode($other_ord) > 127
&& $charset ne 'u' && $charset ne 'L'
&& (($charset eq "a" || $charset eq "aa")
|| ($other_ord < 256 && ($charset eq 'l' || ! $upgrade))))
{
$other_is_word = 0;
$other_reason = "\"$other\" is not a $class under /$charset_display";
$other_neg_reason = "\"$other\" is a $complement under /$charset_display";
}
my $both_reason = $reason;
$both_reason .= "; $other_reason" if $other_ord != $ord;
my $both_neg_reason = $neg_reason;
$both_neg_reason .= "; $other_neg_reason" if $other_ord != $ord;
# If both are the same wordness, then \b will fail; \B
# succeed
if ($match == $other_is_word) {
$op = '!~';
$neg_op = '=~';
}
else {
$op = '=~';
$neg_op = '!~';
}
foreach my $eval (
qq[my \$a = "$other$char"; $upgrade\$a $op qr/ (?$charset_mod: $other \\b $char ) /x],
qq[my \$a = "$char$other"; $upgrade\$a $op qr/ (?$charset_mod: $char \\b $other ) /x],
) {
ok (eval $eval, $eval . $both_reason);
}
foreach my $eval (
qq[my \$a = "$other$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: $other \\B $char ) /x],
qq[my \$a = "$char$other"; $upgrade\$a $neg_op qr/ (?$charset_mod: $char \\B $other ) /x],
) {
ok (eval $eval, $eval . $both_neg_reason);
}
next if $other_ord == $ord;
# These start with the \b or \B. They are included, based
# on source code analysis, to force the testing of the FBC
# (find_by_class) portions of regexec.c.
foreach my $eval (
qq[my \$a = "$other$char"; $upgrade\$a $op qr/ (?$charset_mod: \\b $char ) /x],
qq[my \$a = "$char$other"; $upgrade\$a $op qr/ (?$charset_mod: \\b $other ) /x],
) {
ok (eval $eval, $eval . $both_reason);
}
foreach my $eval (
qq[my \$a = "$other$char"; $upgrade\$a $neg_op qr/ (?$charset_mod: \\B $char ) /x],
qq[my \$a = "$char$other"; $upgrade\$a $neg_op qr/ (?$charset_mod: \\B $other ) /x],
) {
ok (eval $eval, $eval . $both_neg_reason);
}
}
} # End of each test case in a class
} # End of \w, \s, ...
} # End of utf8 upgraded or not
}
plan(curr_test() - 1);