# anyway later during the scanning process (and besides, some clueless
# vendor might have them capitalized erroneously anyway).
-sub _trylocale { # Adds the locale given by the first parameter to the list
- # given by the 3rd iff the platform supports the locale in
- # each of the categories given by the 2nd parameter, which
- # is either a single category or a reference to a list of
- # categories
+# Functions whose names begin with underscore are internal helper functions
+# for this file, and are not to be used by outside callers.
+
+eval { require POSIX; import POSIX 'locale_h'; };
+$has_locale_h = ! $@;
+
+sub _trylocale ($$$$) { # For use only by other functions in this file!
+
+ # Adds the locale given by the first parameter to the list given by the
+ # 3rd iff the platform supports the locale in each of the categories given
+ # by the 2nd parameter, which is either a single category or a reference
+ # to a list of categories The 4th parameter is true if to reject locales
+ # that aren't apparently fully compatible with Perl.
+
my $locale = shift;
my $categories = shift;
my $list = shift;
- return if grep { $locale eq $_ } @$list;
+ my $only_plays_well = shift;
+
+ return if ! $locale || grep { $locale eq $_ } @$list;
$categories = [ $categories ] unless ref $categories;
+ my $badutf8 = 0;
+ my $plays_well = 1;
+
+ use warnings 'locale';
+
+ local $SIG{__WARN__} = sub {
+ $badutf8 = 1 if $_[0] =~ /Malformed UTF-8/;
+ $plays_well = 0 if $_[0] =~ /Locale .* may not work well/i
+ };
+
foreach my $category (@$categories) {
return unless setlocale($category, $locale);
- }
-
- my $badutf8;
- {
- local $SIG{__WARN__} = sub {
- $badutf8 = $_[0] =~ /Malformed UTF-8/;
- };
+ return if $only_plays_well && ! $plays_well;
}
if ($badutf8) {
push @$list, $locale;
}
-sub _decode_encodings {
+sub _decode_encodings { # For use only by other functions in this file!
my @enc;
foreach (split(/ /, shift)) {
push @enc, "$_.65001"; # Windows UTF-8
push @enc, "$_.ACP"; # Windows ANSI code page
push @enc, "$_.OCP"; # Windows OEM code page
+ push @enc, "$_.1252"; # Windows
}
}
if ($^O eq 'os390') {
return @enc;
}
-sub find_locales ($) { # Returns an array of all the locales we found on the
- # system. The parameter is either a single locale
- # category or a reference to a list of categories to
- # find valid locales for it (or in the case of
- # multiple) for all of them
+# LC_ALL can be -1 on some platforms. And, in fact the implementors could
+# legally use any integer to represent any category. But it makes the most
+# sense for them to have used small integers. Below, we create new locale
+# numbers for ones missing from this machine. We make them very negative,
+# hopefully more negative than anything likely to be a valid category on the
+# platform, but also below is a check to be sure that our guess is valid.
+my $max_bad_category_number = -1000000;
+
+# Initialize this hash so that it looks like e.g.,
+# 6 => 'CTYPE',
+# where 6 is the value of &POSIX::LC_CTYPE
+my %category_name;
+unless ($@) {
+ my $number_for_missing_category = $max_bad_category_number;
+ foreach my $name (qw(ALL COLLATE CTYPE MESSAGES MONETARY NUMERIC TIME)) {
+ my $number = eval "&POSIX::LC_$name";
+
+ if ($@) {
+ # Use a negative number (smaller than any legitimate category
+ # number) if the platform doesn't support this category, so we
+ # have an entry for all the ones that might be specified in calls
+ # to us.
+ $number = $number_for_missing_category-- if $@;
+ }
+ elsif ( $number !~ / ^ -? \d+ $ /x
+ || $number <= $max_bad_category_number)
+ {
+ # We think this should be an int. And it has to be larger than
+ # any of our synthetic numbers.
+ die "Unexpected locale category number '$number' for LC_$name"
+ }
+
+ $category_name{$number} = "$name";
+ }
+}
+
+sub locales_enabled(;$) {
+ # Returns 0 if no locale handling is available on this platform; otherwise
+ # 1.
+ #
+ # The optional parameter is a reference to a list of individual POSIX
+ # locale categories. If present, this function also returns 0 if any of
+ # them are individually not available on this platform; otherwise 1.
+ # Actually, it is acceptable for the list to be just a simple scalar
+ # denoting a single category.
+ #
+ # If any of the individual categories specified by the optional parameter
+ # is all digits (and an optional leading minus), it is taken to be the C
+ # enum for the category (e.g., &POSIX::LC_CTYPE). Otherwise it should be
+ # a string name of the category, like 'LC_TIME'. The initial 'LC_' is
+ # optional. It is a fatal error to call this with something that isn't a
+ # known category
+
+ use Config;
+
+ return 0 unless $Config{d_setlocale}
+ # I (khw) cargo-culted the '?' in the pattern on the
+ # next line.
+ && $Config{ccflags} !~ /\bD?NO_LOCALE\b/
+ && $has_locale_h;
+
+ # Done with the global possibilities. Now check if any passed in category
+ # is disabled.
+ my $categories_ref = shift;
+ if (defined $categories_ref) {
+ $categories_ref = [ $categories_ref ] if ! ref $categories_ref;
+ my @local_categories_copy = @$categories_ref;
+ for my $category_name_or_number (@local_categories_copy) {
+ my $name;
+ my $number;
+ if ($category_name_or_number =~ / ^ -? \d+ $ /x) {
+ $number = $category_name_or_number;
+ die "Invalid locale category number '$number'"
+ unless grep { $number == $_ } keys %category_name;
+ $name = $category_name{$number};
+ }
+ else {
+ $name = $category_name_or_number;
+ $name =~ s/ ^ LC_ //x;
+ foreach my $trial (keys %category_name) {
+ if ($category_name{$trial} eq $name) {
+ $number = $trial;
+ last;
+ }
+ }
+ die "Invalid locale category name '$name'"
+ unless defined $number;
+ }
+
+ return 0 if $number <= $max_bad_category_number
+ || $Config{ccflags} =~ /\bD?NO_LOCALE_$name\b/;
+
+ eval "defined &POSIX::LC_$name";
+ return 0 if $@;
+ }
+ }
+
+ return 1;
+}
+
+
+sub find_locales ($;$) { # Returns an array of all the locales we found on the
+ # system. If the optional 2nd parameter is
+ # non-zero, the list is restricted to those locales
+ # that play well with Perl.
+ # The first parameter is either a single locale
+ # category or a reference to a list of categories to
+ # find valid locales for it (or in the case of
+ # multiple) for all of them.
my $categories = shift;
+ my $only_plays_well = shift // 0;
- use Config;;
- my $have_setlocale = $Config{d_setlocale};
+ return unless locales_enabled($categories);
# Visual C's CRT goes silly on strings of the form "en_US.ISO8859-1"
# and mingw32 uses said silly CRT
# so re-enable the tests for Windows XP onwards.
my $winxp = ($^O eq 'MSWin32' && defined &Win32::GetOSVersion &&
join('.', (Win32::GetOSVersion())[1..2]) >= 5.1);
- $have_setlocale = 0 if ((($^O eq 'MSWin32' && !$winxp) || $^O eq 'NetWare') &&
- $Config{cc} =~ /^(cl|gcc|g\+\+|ici)/i);
+ return if ((($^O eq 'MSWin32' && !$winxp) || $^O eq 'NetWare')
+ && $Config{cc} =~ /^(cl|gcc|g\+\+|ici)/i);
# UWIN seems to loop after taint tests, just skip for now
- $have_setlocale = 0 if ($^O =~ /^uwin/);
-
- return unless $have_setlocale;
+ return if ($^O =~ /^uwin/);
- # Done this way in case this is 'required' in the caller before seeing if
- # this is miniperl.
- require POSIX; import POSIX 'locale_h';
-
- _trylocale("C", $categories, \@Locale);
- _trylocale("POSIX", $categories, \@Locale);
+ _trylocale("C", $categories, \@Locale, $only_plays_well);
+ _trylocale("POSIX", $categories, \@Locale, $only_plays_well);
foreach (0..15) {
- _trylocale("ISO8859-$_", $categories, \@Locale);
- _trylocale("iso8859$_", $categories, \@Locale);
- _trylocale("iso8859-$_", $categories, \@Locale);
- _trylocale("iso_8859_$_", $categories, \@Locale);
- _trylocale("isolatin$_", $categories, \@Locale);
- _trylocale("isolatin-$_", $categories, \@Locale);
- _trylocale("iso_latin_$_", $categories, \@Locale);
+ _trylocale("ISO8859-$_", $categories, \@Locale, $only_plays_well);
+ _trylocale("iso8859$_", $categories, \@Locale, $only_plays_well);
+ _trylocale("iso8859-$_", $categories, \@Locale, $only_plays_well);
+ _trylocale("iso_8859_$_", $categories, \@Locale, $only_plays_well);
+ _trylocale("isolatin$_", $categories, \@Locale, $only_plays_well);
+ _trylocale("isolatin-$_", $categories, \@Locale, $only_plays_well);
+ _trylocale("iso_latin_$_", $categories, \@Locale, $only_plays_well);
}
# Sanitize the environment so that we can run the external 'locale'
# locales will cause all IO hadles to default to (assume) utf8
next unless utf8::valid($_);
chomp;
- _trylocale($_, $categories, \@Locale);
+ _trylocale($_, $categories, \@Locale, $only_plays_well);
}
close(LOCALES);
} elsif ($^O eq 'VMS'
opendir(LOCALES, "SYS\$I18N_LOCALE:");
while ($_ = readdir(LOCALES)) {
chomp;
- _trylocale($_, $categories, \@Locale);
+ _trylocale($_, $categories, \@Locale, $only_plays_well);
}
close(LOCALES);
} elsif (($^O eq 'openbsd' || $^O eq 'bitrig' ) && -e '/usr/share/locale') {
- # OpenBSD doesn't have a locale executable, so reading /usr/share/locale
- # is much easier and faster than the last resort method.
+ # OpenBSD doesn't have a locale executable, so reading
+ # /usr/share/locale is much easier and faster than the last resort
+ # method.
opendir(LOCALES, '/usr/share/locale');
while ($_ = readdir(LOCALES)) {
chomp;
- _trylocale($_, $categories, \@Locale);
+ _trylocale($_, $categories, \@Locale, $only_plays_well);
}
close(LOCALES);
} else { # Final fallback. Try our list of locales hard-coded here
# This is going to be slow.
my @Data;
-
# Locales whose name differs if the utf8 bit is on are stored in these two
# files with appropriate encodings.
if ($^H & 0x08 || (${^OPEN} || "") =~ /:utf8/) {
split /:/, $line;
my @enc = _decode_encodings($encodings);
foreach my $loc (split(/ /, $locale_name)) {
- _trylocale($loc, $categories, \@Locale);
+ _trylocale($loc, $categories, \@Locale, $only_plays_well);
foreach my $enc (@enc) {
- _trylocale("$loc.$enc", $categories, \@Locale);
+ _trylocale("$loc.$enc", $categories, \@Locale,
+ $only_plays_well);
}
$loc = lc $loc;
foreach my $enc (@enc) {
- _trylocale("$loc.$enc", $categories, \@Locale);
+ _trylocale("$loc.$enc", $categories, \@Locale,
+ $only_plays_well);
}
}
foreach my $lang (split(/ /, $language_codes)) {
- _trylocale($lang, $categories, \@Locale);
+ _trylocale($lang, $categories, \@Locale, $only_plays_well);
foreach my $country (split(/ /, $country_codes)) {
my $lc = "${lang}_${country}";
- _trylocale($lc, $categories, \@Locale);
+ _trylocale($lc, $categories, \@Locale, $only_plays_well);
foreach my $enc (@enc) {
- _trylocale("$lc.$enc", $categories, \@Locale);
+ _trylocale("$lc.$enc", $categories, \@Locale,
+ $only_plays_well);
}
my $lC = "${lang}_\U${country}";
- _trylocale($lC, $categories, \@Locale);
+ _trylocale($lC, $categories, \@Locale, $only_plays_well);
foreach my $enc (@enc) {
- _trylocale("$lC.$enc", $categories, \@Locale);
+ _trylocale("$lC.$enc", $categories, \@Locale,
+ $only_plays_well);
}
}
}
@Locale = sort @Locale;
return @Locale;
-
-
}
sub is_locale_utf8 ($) { # Return a boolean as to if core Perl thinks the input
# is a UTF-8 locale
+
+ # On z/OS, even locales marked as UTF-8 aren't.
+ return 0 if ord "A" != 65;
+
+ return 0 unless locales_enabled('LC_CTYPE');
+
my $locale = shift;
use locale;
+ no warnings 'locale'; # We may be trying out a weird locale
my $save_locale = setlocale(&POSIX::LC_CTYPE());
if (! $save_locale) {
return $ret;
}
-sub find_utf8_ctype_locale (;$) { # Return the name of locale that core Perl
+sub find_utf8_ctype_locale (;$) { # Return the name of a locale that core Perl
# thinks is a UTF-8 LC_CTYPE locale.
# Optional parameter is a reference to a
# list of locales to try; if omitted, this
# tries all locales it can find on the
# platform
+ return unless locales_enabled('LC_CTYPE');
+
my $locales_ref = shift;
- return if !defined &POSIX::LC_CTYPE;
+
if (! defined $locales_ref) {
- my @locales = find_locales(&POSIX::LC_CTYPE());
+
+ my @locales = find_locales(&POSIX::LC_CTYPE(),
+ 1 # Reject iffy locales.
+ );
$locales_ref = \@locales;
}
https://perl5.git.perl.org / perl5.git / blobdiff