Add API function Perl_langinfo()

This is designed to generally replace nl_langinfo() in XS code.  It is
thread-safer, hides the quirks of perl's LC_NUMERIC handling, and can be
used on systems lacking nl_langinfo.

3 files changed, 111 insertions, 4 deletions

diff --git a/ext/XS-APItest/APItest.pm b/ext/XS-APItest/APItest.pm
index 796605f7c0..d4edcac51a 100644
--- a/ext/XS-APItest/APItest.pm
+++ b/ext/XS-APItest/APItest.pm
@@ -5,7 +5,7 @@ use strict;
 use warnings;
 use Carp;
 
-our $VERSION = '0.91';
+our $VERSION = '0.92';
 
 require XSLoader;
 
diff --git a/ext/XS-APItest/APItest.xs b/ext/XS-APItest/APItest.xs
index 7a18bbf291..e9a55b4030 100644
--- a/ext/XS-APItest/APItest.xs
+++ b/ext/XS-APItest/APItest.xs
@@ -6544,6 +6544,13 @@ test_Gconvert(SV * number, SV * num_digits)
     OUTPUT:
         RETVAL
 
+SV *
+test_Perl_langinfo(SV * item)
+    CODE:
+        RETVAL = newSVpv(Perl_langinfo(SvIV(item)), 0);
+    OUTPUT:
+        RETVAL
+
 MODULE = XS::APItest		PACKAGE = XS::APItest::Backrefs
 
 void
diff --git a/ext/XS-APItest/t/locale.t b/ext/XS-APItest/t/locale.t
index be594b0804..08c16a8499 100644
--- a/ext/XS-APItest/t/locale.t
+++ b/ext/XS-APItest/t/locale.t
@@ -22,9 +22,6 @@ for (@locales) {
     }
 }
 
-skip_all("no non-dot radix locales available") unless $non_dot_locale;
-
-plan tests => 2;
 
 SKIP: {
       if ($Config{usequadmath}) {
@@ -34,3 +31,106 @@ SKIP: {
       use locale;
       is(test_Gconvert(4.179, 2), "4.2", "Gconvert doesn't recognize underlying locale inside 'use locale'");
 }
+
+my %correct_C_responses = (
+        # Commented out entries are ones which there is room for variation
+                            ABDAY_1 => 'Sun',
+                            ABDAY_2 => 'Mon',
+                            ABDAY_3 => 'Tue',
+                            ABDAY_4 => 'Wed',
+                            ABDAY_5 => 'Thu',
+                            ABDAY_6 => 'Fri',
+                            ABDAY_7 => 'Sat',
+                            ABMON_1 => 'Jan',
+                            ABMON_10 => 'Oct',
+                            ABMON_11 => 'Nov',
+                            ABMON_12 => 'Dec',
+                            ABMON_2 => 'Feb',
+                            ABMON_3 => 'Mar',
+                            ABMON_4 => 'Apr',
+                            ABMON_5 => 'May',
+                            ABMON_6 => 'Jun',
+                            ABMON_7 => 'Jul',
+                            ABMON_8 => 'Aug',
+                            ABMON_9 => 'Sep',
+                            ALT_DIGITS => '',
+                            AM_STR => 'AM',
+                            #CODESET => 'ANSI_X3.4-1968',
+                            #CRNCYSTR => '-',
+                            DAY_1 => 'Sunday',
+                            DAY_2 => 'Monday',
+                            DAY_3 => 'Tuesday',
+                            DAY_4 => 'Wednesday',
+                            DAY_5 => 'Thursday',
+                            DAY_6 => 'Friday',
+                            DAY_7 => 'Saturday',
+                            #D_FMT => '%m/%d/%y',
+                            #D_T_FMT => '%a %b %e %H:%M:%S %Y',
+                            ERA => '',
+                            #ERA_D_FMT => '',
+                            #ERA_D_T_FMT => '',
+                            #ERA_T_FMT => '',
+                            MON_1 => 'January',
+                            MON_10 => 'October',
+                            MON_11 => 'November',
+                            MON_12 => 'December',
+                            MON_2 => 'February',
+                            MON_3 => 'March',
+                            MON_4 => 'April',
+                            MON_5 => 'May',
+                            MON_6 => 'June',
+                            MON_7 => 'July',
+                            MON_8 => 'August',
+                            MON_9 => 'September',
+                            #NOEXPR => '^[nN]',
+                            PM_STR => 'PM',
+                            RADIXCHAR => '.',
+                            THOUSEP => '',
+                            #T_FMT => '%H:%M:%S',
+                            #T_FMT_AMPM => '%I:%M:%S %p',
+                            #YESEXPR => '^[yY]',
+                        );
+
+my $hdr = "../../perl_langinfo.h";
+open my $fh, "<", $hdr;
+$|=1;
+
+SKIP: {
+    skip "No LC_ALL", 1 unless find_locales( &LC_ALL );
+
+    use POSIX;
+    setlocale(LC_ALL, "C");
+    eval "use I18N::Langinfo qw(langinfo RADIXCHAR); langinfo(RADIXCHAR)";
+    my $has_nl_langinfo = $@ eq "";
+
+    skip "Can't open $hdr for reading: $!", 1 unless $fh;
+
+    my %items;
+
+    # Find all the current items from the header, and their values.
+    # For non-nl_langinfo systems, those values are arbitrary negative numbers
+    # set in the header.  Otherwise they are the nl_langinfo approved values,
+    # which for the moment is the item name.
+    while (<$fh>) {
+        chomp;
+        next unless / - \d+ $ /x;
+        s/ ^ .* PERL_//x;
+        m/ (.*) \  (.*) /x;
+        $items{$1} = ($has_nl_langinfo)
+                     ? $1
+                     : $2;
+    }
+
+    # Get the translation from item name to numeric value.
+    I18N::Langinfo->import(keys %items) if $has_nl_langinfo;
+
+    foreach my $item (sort keys %items) {
+        my $result = test_Perl_langinfo(eval $items{$item});
+        if (exists $correct_C_responses{$item}) {
+            is ($result, $correct_C_responses{$item},
+                "Returns expected value for $item");
+        }
+    }
+}
+
+done_testing();