Add I18N::Langinfo, which is basically a wrapper around

nl_langinfo(), which is an additional way to query locale
specific information.

p4raw-id: //depot/perl@11207

4 files changed, 1078 insertions, 0 deletions

diff --git a/ext/I18N/Langinfo/Langinfo.pm b/ext/I18N/Langinfo/Langinfo.pm
new file mode 100644
index 0000000000..79f8a14e01
--- /dev/null
+++ b/ext/I18N/Langinfo/Langinfo.pm
@@ -0,0 +1,194 @@
+package I18N::Langinfo;
+
+use 5.006;
+use strict;
+use warnings;
+use Carp;
+
+require Exporter;
+require DynaLoader;
+use AutoLoader;
+
+our @ISA = qw(Exporter DynaLoader);
+
+our @EXPORT_OK = qw(
+        langinfo
+	ABDAY_1
+	ABDAY_2
+	ABDAY_3
+	ABDAY_4
+	ABDAY_5
+	ABDAY_6
+	ABDAY_7
+	ABMON_1
+	ABMON_10
+	ABMON_11
+	ABMON_12
+	ABMON_2
+	ABMON_3
+	ABMON_4
+	ABMON_5
+	ABMON_6
+	ABMON_7
+	ABMON_8
+	ABMON_9
+	ALT_DIGITS
+	AM_STR
+	CODESET
+	CRNCYSTR
+	DAY_1
+	DAY_2
+	DAY_3
+	DAY_4
+	DAY_5
+	DAY_6
+	DAY_7
+	D_FMT
+	D_T_FMT
+	ERA
+	ERA_D_FMT
+	ERA_D_T_FMT
+	ERA_T_FMT
+	MON_1
+	MON_10
+	MON_11
+	MON_12
+	MON_2
+	MON_3
+	MON_4
+	MON_5
+	MON_6
+	MON_7
+	MON_8
+	MON_9
+	NOEXPR
+	NOSTR
+	PM_STR
+	RADIXCHAR
+	THOUSEP
+	T_FMT
+	T_FMT_AMPM
+	YESEXPR
+	YESSTR
+);
+
+our $VERSION = '0.01';
+
+sub AUTOLOAD {
+    # This AUTOLOAD is used to 'autoload' constants from the constant()
+    # XS function.
+
+    my $constname;
+    our $AUTOLOAD;
+    ($constname = $AUTOLOAD) =~ s/.*:://;
+    croak "&I18N::Langinfo::constant not defined" if $constname eq 'constant';
+    my ($error, $val) = constant($constname);
+    if ($error) { croak $error; }
+    {
+	no strict 'refs';
+	# Fixed between 5.005_53 and 5.005_61
+#XXX	if ($] >= 5.00561) {
+#XXX	    *$AUTOLOAD = sub () { $val };
+#XXX	}
+#XXX	else {
+	    *$AUTOLOAD = sub { $val };
+#XXX	}
+    }
+    goto &$AUTOLOAD;
+}
+
+bootstrap I18N::Langinfo $VERSION;
+
+1;
+__END__
+
+=head1 NAME
+
+I18N::Langinfo - query locale information
+
+=head1 SYNOPSIS
+
+  use I18N::Langinfo;
+
+=head1 DESCRIPTION
+
+The langinfo() function queries various locale information that
+can be used to localize output and user interfaces.
+
+The following example will import the langinfo() function itself
+(implicitly) and (explicitly) three constants to be used as arguments
+to langinfo(): a constant for the abbreviated first day of the week (the
+numbering starts from Sunday 1) and two more constant for the affirmative
+and negative answers for a yes/no question in the current locale.
+
+    use I18N::Langinfo qw(langinfo ABDAY_1 YESSTR NOSTR);
+
+    my ($abday_1, $yesstr, $nostr) = map { langinfo } qw(ABDAY_1 YESSTR NOSTR);
+
+    print "$abday_1? [$yesstr/$nostr] ";
+
+In other words, in the "C" (or English) locale the above will probably print:
+
+    Sun? [y/n] 
+
+The usually available constants are
+
+    ABDAY_1 ABDAY_2 ABDAY_3 ABDAY_4 ABDAY_5 ABDAY_6 ABDAY_7
+    ABMON_1 ABMON_2 ABMON_3 ABMON_4 ABMON_5 ABMON_6
+    ABMON_7 ABMON_8 ABMON_9 ABMON_10 ABMON_11 ABMON_12
+    DAY_1 DAY_2 DAY_3 DAY_4 DAY_5 DAY_6 DAY_7
+    MON_1 MON_2 MON_3 MON_4 MON_5 MON_6
+    MON_7 MON_8 MON_9 MON_10 MON_11 MON_12
+
+for abbreviated and full length days of the week and months of the year,
+
+    D_T_FMT D_FMT T_FMT
+
+for the date-time, date, and time formats used by the strftime() function
+(see L<POSIX>, and also L<Time::Piece>),
+
+    AM_STR PM_STR T_FMT_AMPM
+
+for the locales for which it makes sense to have ante meridiem and post
+meridiem time formats,
+
+    CODESET CRNCYSTR RADIXCHAR
+
+for the character code set being used (such as "ISO8859-1", "cp850",
+"koi8-r", "sjis", "utf8", etc.), for the currency string, for the
+radix character (yes, this is redundant with POSIX::localeconv())
+
+    YESSTR YESEXPR NOSTR NOEXPR
+
+for the affirmative and negative responses and expressions, and
+
+    ERA ERA_D_FMT ERA_D_T_FMT ETA_T_FMT
+
+for the Japanese Emperor eras (naturally only defined under Japanese locales).
+
+See your L<langinfo(3)> for more information about the available
+constants.  (Often this means having to look directly at the
+F<langinfo.h> C header file.)
+
+=head2 EXPORT
+
+Nothing is exported by default.
+
+=head1 SEE ALSO
+
+L<perllocale>, L<POSIX/localeconv>, L<POSIX/setlocale>, L<nl_langinfo(3)>.
+
+The langinfo() is just a wrapper for the C nl_langinfo() interface.
+
+=head1 AUTHOR
+
+Jarkko Hietaniemi, E<lt>jhi@hut.fiE<gt>
+
+=head1 COPYRIGHT AND LICENSE
+
+Copyright 2001 by Jarkko Hietaniemi
+
+This library is free software; you can redistribute it and/or modify
+it under the same terms as Perl itself. 
+
+=cut
diff --git a/ext/I18N/Langinfo/Langinfo.t b/ext/I18N/Langinfo/Langinfo.t
new file mode 100644
index 0000000000..bb74f36030
--- /dev/null
+++ b/ext/I18N/Langinfo/Langinfo.t
@@ -0,0 +1,35 @@
+#!./perl
+
+BEGIN {
+    chdir 't' if -d 't';
+    require Config; import Config;
+    if ($Config{'extensions'} !~ m!\bI18N/Langinfo\b!) {
+	print "1..0\n";
+	exit 0;
+    }
+}
+
+
+use I18N::Langinfo qw(langinfo ABDAY_1 DAY_1 ABMON_1 MON_1 RADIXCHAR);
+
+# use the "C" locale
+
+print "1..5\n";
+
+print "not " unless langinfo(ABDAY_1)   eq "Sun";
+print "ok 1\n";
+
+print "not " unless langinfo(DAY_1)     eq "Sunday";
+print "ok 2\n";
+
+print "not " unless langinfo(ABMON_1)   eq "Jan";
+print "ok 3\n";
+
+print "not " unless langinfo(MON_1)     eq "January";
+print "ok 4\n";
+
+print "not " unless langinfo(RADIXCHAR) eq ".";
+print "ok 5\n";
+
+
+
diff --git a/ext/I18N/Langinfo/Langinfo.xs b/ext/I18N/Langinfo/Langinfo.xs
new file mode 100644
index 0000000000..3422eed83c
--- /dev/null
+++ b/ext/I18N/Langinfo/Langinfo.xs
@@ -0,0 +1,832 @@
+#include "EXTERN.h"
+#include "perl.h"
+#include "XSUB.h"
+
+#ifdef I_LANGINFO
+#   include <langinfo.h>
+#endif
+
+#define PERL_constant_NOTFOUND	1
+#define PERL_constant_NOTDEF	2
+#define PERL_constant_ISIV	3
+#define PERL_constant_ISNO	4
+#define PERL_constant_ISNV	5
+#define PERL_constant_ISPV	6
+#define PERL_constant_ISPVN	7
+#define PERL_constant_ISSV	8
+#define PERL_constant_ISUNDEF	9
+#define PERL_constant_ISUV	10
+#define PERL_constant_ISYES	11
+
+#ifndef NVTYPE
+typedef double NV; /* 5.6 and later define NVTYPE, and typedef NV to it.  */
+#endif
+static int
+constant_5 (pTHX_ const char *name, IV *iv_return) {
+  /* When generated this function returned values for the list of names given
+     here.  However, subsequent manual editing may have added or removed some.
+     DAY_1 DAY_2 DAY_3 DAY_4 DAY_5 DAY_6 DAY_7 D_FMT MON_1 MON_2 MON_3 MON_4
+     MON_5 MON_6 MON_7 MON_8 MON_9 NOSTR T_FMT */
+  /* Offset 4 gives the best switch position.  */
+  switch (name[4]) {
+  case '1':
+    if (memEQ(name, "DAY_1", 5)) {
+    /*                   ^      */
+#ifdef DAY_1
+      *iv_return = DAY_1;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "MON_1", 5)) {
+    /*                   ^      */
+#ifdef MON_1
+      *iv_return = MON_1;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '2':
+    if (memEQ(name, "DAY_2", 5)) {
+    /*                   ^      */
+#ifdef DAY_2
+      *iv_return = DAY_2;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "MON_2", 5)) {
+    /*                   ^      */
+#ifdef MON_2
+      *iv_return = MON_2;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '3':
+    if (memEQ(name, "DAY_3", 5)) {
+    /*                   ^      */
+#ifdef DAY_3
+      *iv_return = DAY_3;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "MON_3", 5)) {
+    /*                   ^      */
+#ifdef MON_3
+      *iv_return = MON_3;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '4':
+    if (memEQ(name, "DAY_4", 5)) {
+    /*                   ^      */
+#ifdef DAY_4
+      *iv_return = DAY_4;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "MON_4", 5)) {
+    /*                   ^      */
+#ifdef MON_4
+      *iv_return = MON_4;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '5':
+    if (memEQ(name, "DAY_5", 5)) {
+    /*                   ^      */
+#ifdef DAY_5
+      *iv_return = DAY_5;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "MON_5", 5)) {
+    /*                   ^      */
+#ifdef MON_5
+      *iv_return = MON_5;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '6':
+    if (memEQ(name, "DAY_6", 5)) {
+    /*                   ^      */
+#ifdef DAY_6
+      *iv_return = DAY_6;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "MON_6", 5)) {
+    /*                   ^      */
+#ifdef MON_6
+      *iv_return = MON_6;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '7':
+    if (memEQ(name, "DAY_7", 5)) {
+    /*                   ^      */
+#ifdef DAY_7
+      *iv_return = DAY_7;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "MON_7", 5)) {
+    /*                   ^      */
+#ifdef MON_7
+      *iv_return = MON_7;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '8':
+    if (memEQ(name, "MON_8", 5)) {
+    /*                   ^      */
+#ifdef MON_8
+      *iv_return = MON_8;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '9':
+    if (memEQ(name, "MON_9", 5)) {
+    /*                   ^      */
+#ifdef MON_9
+      *iv_return = MON_9;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'R':
+    if (memEQ(name, "NOSTR", 5)) {
+    /*                   ^      */
+#ifdef NOSTR
+      *iv_return = NOSTR;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'T':
+    if (memEQ(name, "D_FMT", 5)) {
+    /*                   ^      */
+#ifdef D_FMT
+      *iv_return = D_FMT;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "T_FMT", 5)) {
+    /*                   ^      */
+#ifdef T_FMT
+      *iv_return = T_FMT;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  }
+  return PERL_constant_NOTFOUND;
+}
+
+static int
+constant_6 (pTHX_ const char *name, IV *iv_return) {
+  /* When generated this function returned values for the list of names given
+     here.  However, subsequent manual editing may have added or removed some.
+     AM_STR MON_10 MON_11 MON_12 NOEXPR PM_STR YESSTR */
+  /* Offset 0 gives the best switch position.  */
+  switch (name[0]) {
+  case 'A':
+    if (memEQ(name, "AM_STR", 6)) {
+    /*               ^           */
+#ifdef AM_STR
+      *iv_return = AM_STR;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'M':
+    if (memEQ(name, "MON_10", 6)) {
+    /*               ^           */
+#ifdef MON_10
+      *iv_return = MON_10;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "MON_11", 6)) {
+    /*               ^           */
+#ifdef MON_11
+      *iv_return = MON_11;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "MON_12", 6)) {
+    /*               ^           */
+#ifdef MON_12
+      *iv_return = MON_12;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'N':
+    if (memEQ(name, "NOEXPR", 6)) {
+    /*               ^           */
+#ifdef NOEXPR
+      *iv_return = NOEXPR;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'P':
+    if (memEQ(name, "PM_STR", 6)) {
+    /*               ^           */
+#ifdef PM_STR
+      *iv_return = PM_STR;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'Y':
+    if (memEQ(name, "YESSTR", 6)) {
+    /*               ^           */
+#ifdef YESSTR
+      *iv_return = YESSTR;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  }
+  return PERL_constant_NOTFOUND;
+}
+
+static int
+constant_7 (pTHX_ const char *name, IV *iv_return) {
+  /* When generated this function returned values for the list of names given
+     here.  However, subsequent manual editing may have added or removed some.
+     ABDAY_1 ABDAY_2 ABDAY_3 ABDAY_4 ABDAY_5 ABDAY_6 ABDAY_7 ABMON_1 ABMON_2
+     ABMON_3 ABMON_4 ABMON_5 ABMON_6 ABMON_7 ABMON_8 ABMON_9 CODESET D_T_FMT
+     THOUSEP YESEXPR */
+  /* Offset 6 gives the best switch position.  */
+  switch (name[6]) {
+  case '1':
+    if (memEQ(name, "ABDAY_1", 7)) {
+    /*                     ^      */
+#ifdef ABDAY_1
+      *iv_return = ABDAY_1;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "ABMON_1", 7)) {
+    /*                     ^      */
+#ifdef ABMON_1
+      *iv_return = ABMON_1;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '2':
+    if (memEQ(name, "ABDAY_2", 7)) {
+    /*                     ^      */
+#ifdef ABDAY_2
+      *iv_return = ABDAY_2;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "ABMON_2", 7)) {
+    /*                     ^      */
+#ifdef ABMON_2
+      *iv_return = ABMON_2;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '3':
+    if (memEQ(name, "ABDAY_3", 7)) {
+    /*                     ^      */
+#ifdef ABDAY_3
+      *iv_return = ABDAY_3;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "ABMON_3", 7)) {
+    /*                     ^      */
+#ifdef ABMON_3
+      *iv_return = ABMON_3;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '4':
+    if (memEQ(name, "ABDAY_4", 7)) {
+    /*                     ^      */
+#ifdef ABDAY_4
+      *iv_return = ABDAY_4;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "ABMON_4", 7)) {
+    /*                     ^      */
+#ifdef ABMON_4
+      *iv_return = ABMON_4;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '5':
+    if (memEQ(name, "ABDAY_5", 7)) {
+    /*                     ^      */
+#ifdef ABDAY_5
+      *iv_return = ABDAY_5;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "ABMON_5", 7)) {
+    /*                     ^      */
+#ifdef ABMON_5
+      *iv_return = ABMON_5;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '6':
+    if (memEQ(name, "ABDAY_6", 7)) {
+    /*                     ^      */
+#ifdef ABDAY_6
+      *iv_return = ABDAY_6;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "ABMON_6", 7)) {
+    /*                     ^      */
+#ifdef ABMON_6
+      *iv_return = ABMON_6;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '7':
+    if (memEQ(name, "ABDAY_7", 7)) {
+    /*                     ^      */
+#ifdef ABDAY_7
+      *iv_return = ABDAY_7;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "ABMON_7", 7)) {
+    /*                     ^      */
+#ifdef ABMON_7
+      *iv_return = ABMON_7;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '8':
+    if (memEQ(name, "ABMON_8", 7)) {
+    /*                     ^      */
+#ifdef ABMON_8
+      *iv_return = ABMON_8;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '9':
+    if (memEQ(name, "ABMON_9", 7)) {
+    /*                     ^      */
+#ifdef ABMON_9
+      *iv_return = ABMON_9;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'P':
+    if (memEQ(name, "THOUSEP", 7)) {
+    /*                     ^      */
+#ifdef THOUSEP
+      *iv_return = THOUSEP;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'R':
+    if (memEQ(name, "YESEXPR", 7)) {
+    /*                     ^      */
+#ifdef YESEXPR
+      *iv_return = YESEXPR;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'T':
+    if (memEQ(name, "CODESET", 7)) {
+    /*                     ^      */
+#ifdef CODESET
+      *iv_return = CODESET;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    if (memEQ(name, "D_T_FMT", 7)) {
+    /*                     ^      */
+#ifdef D_T_FMT
+      *iv_return = D_T_FMT;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  }
+  return PERL_constant_NOTFOUND;
+}
+
+static int
+constant_8 (pTHX_ const char *name, IV *iv_return) {
+  /* When generated this function returned values for the list of names given
+     here.  However, subsequent manual editing may have added or removed some.
+     ABMON_10 ABMON_11 ABMON_12 CRNCYSTR */
+  /* Offset 7 gives the best switch position.  */
+  switch (name[7]) {
+  case '0':
+    if (memEQ(name, "ABMON_10", 8)) {
+    /*                      ^      */
+#ifdef ABMON_10
+      *iv_return = ABMON_10;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '1':
+    if (memEQ(name, "ABMON_11", 8)) {
+    /*                      ^      */
+#ifdef ABMON_11
+      *iv_return = ABMON_11;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case '2':
+    if (memEQ(name, "ABMON_12", 8)) {
+    /*                      ^      */
+#ifdef ABMON_12
+      *iv_return = ABMON_12;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'R':
+    if (memEQ(name, "CRNCYSTR", 8)) {
+    /*                      ^      */
+#ifdef CRNCYSTR
+      *iv_return = CRNCYSTR;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  }
+  return PERL_constant_NOTFOUND;
+}
+
+static int
+constant_9 (pTHX_ const char *name, IV *iv_return) {
+  /* When generated this function returned values for the list of names given
+     here.  However, subsequent manual editing may have added or removed some.
+     ERA_D_FMT ERA_T_FMT RADIXCHAR */
+  /* Offset 4 gives the best switch position.  */
+  switch (name[4]) {
+  case 'D':
+    if (memEQ(name, "ERA_D_FMT", 9)) {
+    /*                   ^          */
+#ifdef ERA_D_FMT
+      *iv_return = ERA_D_FMT;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'T':
+    if (memEQ(name, "ERA_T_FMT", 9)) {
+    /*                   ^          */
+#ifdef ERA_T_FMT
+      *iv_return = ERA_T_FMT;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 'X':
+    if (memEQ(name, "RADIXCHAR", 9)) {
+    /*                   ^          */
+#ifdef RADIXCHAR
+      *iv_return = RADIXCHAR;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  }
+  return PERL_constant_NOTFOUND;
+}
+
+static int
+constant (pTHX_ const char *name, STRLEN len, IV *iv_return) {
+  /* Initially switch on the length of the name.  */
+  /* When generated this function returned values for the list of names given
+     in this section of perl code.  Rather than manually editing these functions
+     to add or remove constants, which would result in this comment and section
+     of code becoming inaccurate, we recommend that you edit this section of
+     code, and use it to regenerate a new set of constant functions which you
+     then use to replace the originals.
+
+     Regenerate these constant functions by feeding this entire source file to
+     perl -x
+
+#!../../../perl -w
+use ExtUtils::Constant qw (constant_types C_constant XS_constant);
+
+my $types = {map {($_, 1)} qw(IV)};
+my @names = (qw(ABDAY_1 ABDAY_2 ABDAY_3 ABDAY_4 ABDAY_5 ABDAY_6 ABDAY_7 ABMON_1
+	       ABMON_10 ABMON_11 ABMON_12 ABMON_2 ABMON_3 ABMON_4 ABMON_5
+	       ABMON_6 ABMON_7 ABMON_8 ABMON_9 ALT_DIGITS AM_STR CODESET
+	       CRNCYSTR DAY_1 DAY_2 DAY_3 DAY_4 DAY_5 DAY_6 DAY_7 D_FMT D_T_FMT
+	       ERA ERA_D_FMT ERA_D_T_FMT ERA_T_FMT MON_1 MON_10 MON_11 MON_12
+	       MON_2 MON_3 MON_4 MON_5 MON_6 MON_7 MON_8 MON_9 NOEXPR NOSTR
+	       PM_STR RADIXCHAR THOUSEP T_FMT T_FMT_AMPM YESEXPR YESSTR));
+
+print constant_types(); # macro defs
+foreach (C_constant ("I18N::Langinfo", 'constant', 'IV', $types, undef, 3, @names) ) {
+    print $_, "\n"; # C constant subs
+}
+print "#### XS Section:\n";
+print XS_constant ("I18N::Langinfo", $types);
+__END__
+   */
+
+  switch (len) {
+  case 3:
+    if (memEQ(name, "ERA", 3)) {
+#ifdef ERA
+      *iv_return = ERA;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  case 5:
+    return constant_5 (aTHX_ name, iv_return);
+    break;
+  case 6:
+    return constant_6 (aTHX_ name, iv_return);
+    break;
+  case 7:
+    return constant_7 (aTHX_ name, iv_return);
+    break;
+  case 8:
+    return constant_8 (aTHX_ name, iv_return);
+    break;
+  case 9:
+    return constant_9 (aTHX_ name, iv_return);
+    break;
+  case 10:
+    /* Names all of length 10.  */
+    /* ALT_DIGITS T_FMT_AMPM */
+    /* Offset 7 gives the best switch position.  */
+    switch (name[7]) {
+    case 'I':
+      if (memEQ(name, "ALT_DIGITS", 10)) {
+      /*                      ^         */
+#ifdef ALT_DIGITS
+        *iv_return = ALT_DIGITS;
+        return PERL_constant_ISIV;
+#else
+        return PERL_constant_NOTDEF;
+#endif
+      }
+      break;
+    case 'M':
+      if (memEQ(name, "T_FMT_AMPM", 10)) {
+      /*                      ^         */
+#ifdef T_FMT_AMPM
+        *iv_return = T_FMT_AMPM;
+        return PERL_constant_ISIV;
+#else
+        return PERL_constant_NOTDEF;
+#endif
+      }
+      break;
+    }
+    break;
+  case 11:
+    if (memEQ(name, "ERA_D_T_FMT", 11)) {
+#ifdef ERA_D_T_FMT
+      *iv_return = ERA_D_T_FMT;
+      return PERL_constant_ISIV;
+#else
+      return PERL_constant_NOTDEF;
+#endif
+    }
+    break;
+  }
+  return PERL_constant_NOTFOUND;
+}
+
+MODULE = I18N::Langinfo	PACKAGE = I18N::Langinfo
+
+PROTOTYPES: ENABLE
+
+void
+constant(sv)
+    PREINIT:
+#ifdef dXSTARG
+	dXSTARG; /* Faster if we have it.  */
+#else
+	dTARGET;
+#endif
+	STRLEN		len;
+        int		type;
+	IV		iv;
+	/* NV		nv;	Uncomment this if you need to return NVs */
+	/* const char	*pv;	Uncomment this if you need to return PVs */
+    INPUT:
+	SV *		sv;
+        const char *	s = SvPV(sv, len);
+    PPCODE:
+        /* Change this to constant(aTHX_ s, len, &iv, &nv);
+           if you need to return both NVs and IVs */
+	type = constant(aTHX_ s, len, &iv);
+      /* Return 1 or 2 items. First is error message, or undef if no error.
+           Second, if present, is found value */
+        switch (type) {
+        case PERL_constant_NOTFOUND:
+          sv = sv_2mortal(newSVpvf("%s is not a valid I18N::Langinfo macro", s));
+          PUSHs(sv);
+          break;
+        case PERL_constant_NOTDEF:
+          sv = sv_2mortal(newSVpvf(
+	    "Your vendor has not defined I18N::Langinfo macro %s, used", s));
+          PUSHs(sv);
+          break;
+        case PERL_constant_ISIV:
+          EXTEND(SP, 1);
+          PUSHs(&PL_sv_undef);
+          PUSHi(iv);
+          break;
+	/* Uncomment this if you need to return NOs
+        case PERL_constant_ISNO:
+          EXTEND(SP, 1);
+          PUSHs(&PL_sv_undef);
+          PUSHs(&PL_sv_no);
+          break; */
+	/* Uncomment this if you need to return NVs
+        case PERL_constant_ISNV:
+          EXTEND(SP, 1);
+          PUSHs(&PL_sv_undef);
+          PUSHn(nv);
+          break; */
+	/* Uncomment this if you need to return PVs
+        case PERL_constant_ISPV:
+          EXTEND(SP, 1);
+          PUSHs(&PL_sv_undef);
+          PUSHp(pv, strlen(pv));
+          break; */
+	/* Uncomment this if you need to return PVNs
+        case PERL_constant_ISPVN:
+          EXTEND(SP, 1);
+          PUSHs(&PL_sv_undef);
+          PUSHp(pv, iv);
+          break; */
+	/* Uncomment this if you need to return SVs
+        case PERL_constant_ISSV:
+          EXTEND(SP, 1);
+          PUSHs(&PL_sv_undef);
+          PUSHs(sv);
+          break; */
+	/* Uncomment this if you need to return UNDEFs
+        case PERL_constant_ISUNDEF:
+          break; */
+	/* Uncomment this if you need to return UVs
+        case PERL_constant_ISUV:
+          EXTEND(SP, 1);
+          PUSHs(&PL_sv_undef);
+          PUSHu((UV)iv);
+          break; */
+	/* Uncomment this if you need to return YESs
+        case PERL_constant_ISYES:
+          EXTEND(SP, 1);
+          PUSHs(&PL_sv_undef);
+          PUSHs(&PL_sv_yes);
+          break; */
+        default:
+          sv = sv_2mortal(newSVpvf(
+	    "Unexpected return type %d while processing I18N::Langinfo macro %s, used",
+               type, s));
+          PUSHs(sv);
+        }
+
+SV*
+langinfo(code)
+	int	code
+  CODE:
+	char *s = nl_langinfo(code);
+	RETVAL = newSVpvn(s, strlen(s));
+  OUTPUT:
+	RETVAL
diff --git a/ext/I18N/Langinfo/Makefile.PL b/ext/I18N/Langinfo/Makefile.PL
new file mode 100644
index 0000000000..aff6f87107
--- /dev/null
+++ b/ext/I18N/Langinfo/Makefile.PL
@@ -0,0 +1,17 @@
+use ExtUtils::MakeMaker;
+# See lib/ExtUtils/MakeMaker.pm for details of how to influence
+# the contents of the Makefile that is written.
+WriteMakefile(
+    'NAME'		=> 'I18N::Langinfo',
+    'VERSION_FROM'	=> 'Langinfo.pm', # finds $VERSION
+    'PREREQ_PM'		=> {}, # e.g., Module::Name => 1.1
+    ($] >= 5.005 ?    ## Add these new keywords supported since 5.005
+      (ABSTRACT_FROM => 'Langinfo.pm', # retrieve abstract from module
+       AUTHOR     => 'Jarkko Hietaniemi <jhi@hut.fi>') : ()),
+    'LIBS'		=> [''], # e.g., '-lm'
+    'DEFINE'		=> '', # e.g., '-DHAVE_SOMETHING'
+	# Insert -I. if you add *.h files later:
+    'INC'		=> '', # e.g., '-I/usr/include/other'
+	# Un-comment this if you add C files to link with later:
+    # 'OBJECT'		=> '$(O_FILES)', # link all the C files too
+);