From 51996c07fc2b308ad29dcbaa93e4d5d3d21b3331 Mon Sep 17 00:00:00 2001
From: John Darrington <john@darrington.wattle.id.au>
Date: Wed, 15 Oct 2008 11:02:01 +0800
Subject: [PATCH] Set the DECIMAL point character from the LC_NUMERIC component
 of the current locale.

---
 doc/utilities.texi  |  7 +++++--
 src/data/settings.c |  2 ++
 src/libpspp/i18n.c  | 33 +++++++++++++++++++++++++++++++++
 src/libpspp/i18n.h  |  3 +++
 tests/automake.mk   |  2 ++
 5 files changed, 45 insertions(+), 2 deletions(-)

diff --git a/doc/utilities.texi b/doc/utilities.texi
index 35ea20e2..d825b9ab 100644
--- a/doc/utilities.texi
+++ b/doc/utilities.texi
@@ -414,10 +414,13 @@ default.  Any real value may be assigned.
 
 @item DECIMAL
 @anchor{SET DECIMAL}
-The default DOT setting causes the decimal point character to be
-@samp{.} and the grouping character to be @samp{,}.  A setting of COMMA
+This value may be set to DOT or COMMA.
+Setting it to DOT causes the decimal point character to be
+@samp{.} and the grouping character to be @samp{,}.
+Setting it to COMMA
 causes the decimal point character to be @samp{,} and the grouping
 character to be @samp{.}.
+The default value is determined from the system locale.
 
 @item FORMAT
 Allows the default numeric input/output format to be specified.  The
diff --git a/src/data/settings.c b/src/data/settings.c
index a87e3eff..ad509fb0 100644
--- a/src/data/settings.c
+++ b/src/data/settings.c
@@ -149,6 +149,8 @@ settings_init (int *width, int *length)
   settings_set_epoch (-1);
   i18n_init ();
   the_settings.styles = fmt_create ();
+
+  settings_set_decimal_char (get_system_decimal ());
 }
 
 void
diff --git a/src/libpspp/i18n.c b/src/libpspp/i18n.c
index 70780eff..bda2676c 100644
--- a/src/libpspp/i18n.c
+++ b/src/libpspp/i18n.c
@@ -30,6 +30,10 @@
 #include <localcharset.h>
 #include "xstrndup.h"
 
+#if HAVE_NL_LANGINFO
+#include <langinfo.h>
+#endif
+
 
 static char *locale = 0;
 static const char *charset;
@@ -213,3 +217,32 @@ i18n_done (void)
     }
 }
 
+
+
+
+/* Return the system local's idea of the
+   decimal seperator character */
+char
+get_system_decimal (void)
+{
+  char *radix_char = NULL;
+
+  char *ol = setlocale (LC_NUMERIC, NULL);
+  setlocale (LC_NUMERIC, "");
+
+#if HAVE_NL_LANGINFO
+  radix_char = nl_langinfo (RADIXCHAR);
+#else
+  {
+    char *buf = xmalloc (10);
+    snprintf (buf, 10, "%f", 2.5);
+    radix_char = &buf[1];
+  }
+#endif
+
+  /* We MUST leave LC_NUMERIC untouched, since it would
+     otherwise interfere with data_{in,out} */
+  setlocale (LC_NUMERIC, ol);
+  return *radix_char;
+}
+
diff --git a/src/libpspp/i18n.h b/src/libpspp/i18n.h
index 0633ebc8..db15bad8 100644
--- a/src/libpspp/i18n.h
+++ b/src/libpspp/i18n.h
@@ -36,5 +36,8 @@ enum conv_id
 char * recode_string (enum conv_id how,  const char *text, int len);
 
 
+/* Return the decimal separator according to the
+   system locale */
+char get_system_decimal (void);
 
 #endif /* i18n.h */
diff --git a/tests/automake.mk b/tests/automake.mk
index d8dd300e..082889cd 100644
--- a/tests/automake.mk
+++ b/tests/automake.mk
@@ -6,6 +6,8 @@ TESTS_ENVIRONMENT += PERL='@PERL@' PG_CONFIG='@PG_CONFIG@'
 # Allow locale_charset to find charset.alias before running "make install".
 TESTS_ENVIRONMENT += CHARSETALIASDIR='$(abs_top_builddir)/gl'
 
+TESTS_ENVIRONMENT += LC_ALL=C
+
 dist_TESTS = \
 	tests/command/aggregate.sh \
 	tests/command/attributes.sh \
-- 
2.30.2