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#!/usr/bin/perl
# Exercise expr with multibyte input
# Copyright (C) 2017-2023 Free Software Foundation, Inc.
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
use strict;
(my $ME = $0) =~ s|.*/||;
my $limits = getlimits ();
my $UINTMAX_OFLOW = $limits->{UINTMAX_OFLOW};
(my $program_name = $0) =~ s|.*/||;
my $prog = 'expr';
my $locale = $ENV{LOCALE_FR_UTF8};
! defined $locale || $locale eq 'none'
and CuSkip::skip "$ME: this test requires FR-UTF8 locale\n";
=pod
ἔκφρασις (ekphrasis) - "expression" in Ancient Greek.
=cut
my $expression = "\x{1F14}\x{3BA}\x{3C6}\x{3C1}\x{3B1}\x{3C3}\x{3B9}\x{3C2}";
## NOTE about tests locales:
## Tests starting with 'mb' will have {ENV=>"LC_ALL=$locale"}
## added to them automatically - results are multibyte-aware.
## Tests starting with 'sb' have the same input but will be
## run under C locale and will be treated as single-bytes.
## This enables interleaving C/UTF8 tests
## (for easier comparison of expected results).
my @Tests =
(
### length expressions ###
# sanity check
['mb-l1', 'length abcdef', {OUT=>"6"}],
['st-l1', 'length abcdef', {OUT=>"6"}],
# A single multibyte character in the beginning of the string
# \xCE\xB1 is UTF-8 for "U+03B1 GREEK SMALL LETTER ALPHA"
['mb-l2', "length \xCE\xB1bcdef", {OUT=>"6"}],
['st-l2', "length \xCE\xB1bcdef", {OUT=>"7"}],
# A single multibyte character in the middle of the string
# \xCE\xB4 is UTF-8 for "U+03B4 GREEK SMALL LETTER DELTA"
['mb-l3', "length abc\xCE\xB4ef", {OUT=>"6"}],
['st-l3', "length abc\xCE\xB4ef", {OUT=>"7"}],
# A single multibyte character in the end of the string
['mb-l4', "length fedcb\xCE\xB1", {OUT=>"6"}],
['st-l4', "length fedcb\xCE\xB1", {OUT=>"7"}],
# A invalid multibyte sequence
['mb-l5', "length \xB1aaa", {OUT=>"4"}],
['st-l5', "length \xB1aaa", {OUT=>"4"}],
# An incomplete multibyte sequence at the end of the string
['mb-l6', "length aaa\xCE", {OUT=>"4"}],
['st-l6', "length aaa\xCE", {OUT=>"4"}],
# An incomplete multibyte sequence at the end of the string
['mb-l7', "length $expression", {OUT=>"8"}],
['st-l7', "length $expression", {OUT=>"17"}],
### index expressions ###
# sanity check
['mb-i1', 'index abcdef fb', {OUT=>"2"}],
['st-i1', 'index abcdef fb', {OUT=>"2"}],
# Search for a single-octet
['mb-i2', "index \xCE\xB1bc\xCE\xB4ef b", {OUT=>"2"}],
['st-i2', "index \xCE\xB1bc\xCE\xB4ef b", {OUT=>"3"}],
['mb-i3', "index \xCE\xB1bc\xCE\xB4ef f", {OUT=>"6"}],
['st-i3', "index \xCE\xB1bc\xCE\xB4ef f", {OUT=>"8"}],
# Search for multibyte character.
# In the C locale, the search string is treated as two octets.
# the first of them (\xCE) matches the first octet of the input string.
['mb-i4', "index \xCE\xB1bc\xCE\xB4ef \xCE\xB4", {OUT=>"4"}],
['st-i4', "index \xCE\xB1bc\xCE\xB4ef \xCE\xB4", {OUT=>"1"}],
# Invalid multibyte sequence in the input string, treated as a single octet.
['mb-i5', "index \xCEbc\xCE\xB4ef \xCE\xB4", {OUT=>"4"}],
['st-i5', "index \xCEbc\xCE\xB4ef \xCE\xB4", {OUT=>"1"}],
# Invalid multibyte sequence in the search string, treated as a single octet.
# In multibyte locale, there should be no match, expr returns and prints
# zero, and terminates with exit-code 1 (as per POSIX).
['mb-i6', "index \xCE\xB1bc\xCE\xB4ef \xB4", {OUT=>"0"}, {EXIT=>1}],
['st-i6', "index \xCE\xB1bc\xCE\xB4ef \xB4", {OUT=>"6"}],
# Edge-case: invalid multibyte sequence BOTH in the input string
# and in the search string: expr should find a match.
['mb-i7', "index \xCE\xB1bc\xB4ef \xB4", {OUT=>"4"}],
### substr expressions ###
# sanity check
['mb-s1', 'substr abcdef 2 3', {OUT=>"bcd"}],
['st-s1', 'substr abcdef 2 3', {OUT=>"bcd"}],
['mb-s2', "substr \xCE\xB1bc\xCE\xB4ef 1 1", {OUT=>"\xCE\xB1"}],
['st-s2', "substr \xCE\xB1bc\xCE\xB4ef 1 1", {OUT=>"\xCE"}],
['mb-s3', "substr \xCE\xB1bc\xCE\xB4ef 3 2", {OUT=>"c\xCE\xB4"}],
['st-s3', "substr \xCE\xB1bc\xCE\xB4ef 3 2", {OUT=>"bc"}],
['mb-s4', "substr \xCE\xB1bc\xCE\xB4ef 4 1", {OUT=>"\xCE\xB4"}],
['st-s4', "substr \xCE\xB1bc\xCE\xB4ef 4 1", {OUT=>"c"}],
['mb-s5', "substr \xCE\xB1bc\xCE\xB4ef 4 2", {OUT=>"\xCE\xB4e"}],
['st-s5', "substr \xCE\xB1bc\xCE\xB4ef 4 2", {OUT=>"c\xCE"}],
['mb-s6', "substr \xCE\xB1bc\xCE\xB4ef 6 1", {OUT=>"f"}],
['st-s6', "substr \xCE\xB1bc\xCE\xB4ef 6 1", {OUT=>"\xB4"}],
['mb-s7', "substr \xCE\xB1bc\xCE\xB4ef 7 1", {OUT=>""}, {EXIT=>1}],
['st-s7', "substr \xCE\xB1bc\xCE\xB4ef 7 1", {OUT=>"e"}],
# Invalid multibyte sequences
['mb-s8', "substr \xCE\xB1bc\xB4ef 3 3", {OUT=>"c\xB4e"}],
['st-s8', "substr \xCE\xB1bc\xB4ef 3 3", {OUT=>"bc\xB4"}],
### match expressions ###
# sanity check
['mb-m1', 'match abcdef ab', {OUT=>"2"}],
['st-m1', 'match abcdef ab', {OUT=>"2"}],
['mb-m2', 'match abcdef "\(ab\)"', {OUT=>"ab"}],
['st-m2', 'match abcdef "\(ab\)"', {OUT=>"ab"}],
# The regex engine should match the '.' to the first multibyte character.
['mb-m3', "match \xCE\xB1bc\xCE\xB4ef .bc", {OUT=>"3"}],
['st-m3', "match \xCE\xB1bc\xCE\xB4ef .bc", {OUT=>"0"}, {EXIT=>1}],
# The opposite of the previous test: two dots should only match
# the two octets in single-byte locale.
['mb-m4', "match \xCE\xB1bc\xCE\xB4ef ..bc", {OUT=>"0"}, {EXIT=>1}],
['st-m4', "match \xCE\xB1bc\xCE\xB4ef ..bc", {OUT=>"4"}],
# Match with grouping - a single dot should return the two octets
['mb-m5', "match \xCE\xB1bc\xCE\xB4ef '\\(.b\\)c'", {OUT=>"\xCE\xB1b"}],
['st-m5', "match \xCE\xB1bc\xCE\xB4ef '\\(.b\\)c'", {OUT=>""}, {EXIT=>1}],
# Invalid multibyte sequences - regex should not match in multibyte locale
# (POSIX requirement)
['mb-m6', "match \xCEbc\xCE\xB4ef '\\(.\\)'", {OUT=>""}, {EXIT=>1}],
['st-m6', "match \xCEbc\xCE\xB4ef '\\(.\\)'", {OUT=>"\xCE"}],
# Character classes: in the multibyte case, the regex engine understands
# there is a single multibyte character in the brackets.
# In the single byte case, the regex engine sees two octets in the character
# class ('\xCE' and '\xB1') - and it matches the first one.
['mb-m7', "match \xCE\xB1bc\xCE\xB4e '\\([\xCE\xB1]\\)'", {OUT=>"\xCE\xB1"}],
['st-m7', "match \xCE\xB1bc\xCE\xB4e '\\([\xCE\xB1]\\)'", {OUT=>"\xCE"}],
);
# Append a newline to end of each expected 'OUT' string.
my $t;
foreach $t (@Tests)
{
my $arg1 = $t->[1];
my $e;
foreach $e (@$t)
{
$e->{OUT} .= "\n"
if ref $e eq 'HASH' and exists $e->{OUT};
}
}
# Force multibyte locale in all tests.
#
# NOTE about the ERR_SUBST:
# The error tests above (e1/e2/e3/e4) expect error messages in C locale
# having single-quote character (ASCII 0x27).
# In UTF-8 locale, the error messages will use:
# 'LEFT SINGLE QUOTATION MARK' (U+2018) (UTF8: 0xE2 0x80 0x98)
# 'RIGHT SINGLE QUOTATION MARK' (U+2019) (UTF8: 0xE2 0x80 0x99)
# So we replace them with ascii single-quote and the results will
# match the expected error string.
if ($locale ne 'C')
{
my @new;
foreach my $t (@Tests)
{
my ($tname) = @$t;
if ($tname =~ /^mb/)
{
push @$t, ({ENV => "LC_ALL=$locale"},
{ERR_SUBST => "s/\xe2\x80[\x98\x99]/'/g"});
}
}
}
my $save_temps = $ENV{DEBUG};
my $verbose = $ENV{VERBOSE};
my $fail = run_tests ($program_name, $prog, \@Tests, $save_temps, $verbose);
exit $fail;
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