tdf#101077 make double->str conv. locale-agnostic

Change-Id: Ibb87f4a14fda6957149ca52083387760ff6e60a3

external/libodfgen/0001-tdf-101077-make-double-string-conversion-locale-agno.patch.1

+From 68e0c8e4c834df57bc9a0e8da72151f69ff5e7a6 Mon Sep 17 00:00:00 2001
+From: David Tardon <dtardon@redhat.com>
+Date: Fri, 12 Aug 2016 12:50:39 +0200
+Subject: [PATCH] tdf#101077 make double->string conversion locale-agnostic
+
+---
+ src/OdsGenerator.cxx | 19 +++++++++++++++++--
+ 1 file changed, 17 insertions(+), 2 deletions(-)
+
+diff --git a/src/OdsGenerator.cxx b/src/OdsGenerator.cxx
+index 52e135e..8cb7203 100644
+--- a/src/OdsGenerator.cxx
++++ b/src/OdsGenerator.cxx
+@@ -26,6 +26,8 @@
+ 
+ #include <librevenge/librevenge.h>
+ 
++#include <iomanip>
++#include <locale>
+ #include <map>
+ #include <stack>
+ #include <sstream>
+@@ -46,6 +48,19 @@
+ #include "OdcGenerator.hxx"
+ #include "OdfGenerator.hxx"
+ 
++namespace
++{
++
++librevenge::RVNGString makePreciseStr(const double value)
++{
++	std::ostringstream os;
++	os.imbue(std::locale::classic());
++	os << std::fixed << std::setprecision(8) << value;
++	return os.str().c_str();
++}
++
++}
++
+ class OdsGeneratorPrivate : public OdfGenerator
+ {
+ public:
+@@ -968,10 +983,10 @@ void OdsGenerator::openSheetCell(const librevenge::RVNGPropertyList &propList)
+ 					// we need the maximum precision here, so we must avoid getStr() when possible
+ 					librevenge::RVNGString value;
+ 					if (propList["librevenge:value"]->getUnit()==librevenge::RVNG_GENERIC)
+-						value.sprintf("%.8f", propList["librevenge:value"]->getDouble());
++						value = makePreciseStr(propList["librevenge:value"]->getDouble());
+ 					else if (propList["librevenge:value"]->getUnit()==librevenge::RVNG_PERCENT)
+ 					{
+-						value.sprintf("%.8f", propList["librevenge:value"]->getDouble()*100.);
++						value = makePreciseStr(propList["librevenge:value"]->getDouble()*100.);
+ 						value.append('%');
+ 					}
+ 					else
+-- 
+2.7.4
+

external/libodfgen/UnpackedTarball_libodfgen.mk

@@ -35,5 +35,8 @@ $(eval $(call gb_UnpackedTarball_add_patches,libodfgen, \
 endif
 endif
 
+$(eval $(call gb_UnpackedTarball_add_patches,libodfgen, \
+	external/libodfgen/0001-tdf-101077-make-double-string-conversion-locale-agno.patch.1 \
+))
 
 # vim: set noet sw=4 ts=4: