From 8462c9cfaf61b7d4318b6f7655a2858b9fabdf63 Mon Sep 17 00:00:00 2001
From: Artem Zhidkov <Artem.Zhidkov@opencascade.com>
Date: Sun, 28 Jun 2020 15:51:58 +0300
Subject: [PATCH] Task #3237: Allow usage of accented characters in
 ObjectBrowser

Fix compilation on Linux with -std=c++0x
---
 src/Events/Events_InfoMessage.cpp | 21 ++++++++++++++++++++
 src/ModelAPI/ModelAPI_Tools.cpp   | 32 +++++++++++++++++++++++++++++++
 2 files changed, 53 insertions(+)

diff --git a/src/Events/Events_InfoMessage.cpp b/src/Events/Events_InfoMessage.cpp
index 50f41d121..ba26c145f 100644
--- a/src/Events/Events_InfoMessage.cpp
+++ b/src/Events/Events_InfoMessage.cpp
@@ -19,7 +19,19 @@
 
 #include "Events_InfoMessage.h"
 #include <sstream>
+
+// To support old types of GCC (less than 5.0), check the wide-string conversion is working
+#if (__cplusplus >= 201103L || _MSVC_LANG >= 201103L)  && \
+    (__cplusplus >= 201402L || !defined(__GLIBCXX__)   || \
+    (defined(_GLIBCXX_RELEASE) && _GLIBCXX_RELEASE > 4))
+#define HAVE_WORKING_WIDESTRING 1
+#else
+#define HAVE_WORKING_WIDESTRING 0
+#endif
+
+#if HAVE_WORKING_WIDESTRING
 #include <codecvt>
+#endif
 
 void Events_InfoMessage::addParameter(double theParam)
 {
@@ -43,7 +55,16 @@ void Events_InfoMessage::send()
 
 Events_InfoMessage& Events_InfoMessage::arg(const std::wstring& theParam)
 {
+#if HAVE_WORKING_WIDESTRING
   static std::wstring_convert<std::codecvt_utf8<wchar_t> > aConvertor;
   addParameter(aConvertor.to_bytes(theParam));
+#else
+  char* aBuf = new char[2 * (theParam.size() + 1)];
+  size_t aNbChars = std::wcstombs(aBuf, theParam.c_str(), theParam.size());
+  if (aNbChars != (size_t)-1)
+    aBuf[aNbChars] = '\0';
+  addParameter(aBuf);
+  delete[] aBuf;
+#endif
   return *this;
 }
diff --git a/src/ModelAPI/ModelAPI_Tools.cpp b/src/ModelAPI/ModelAPI_Tools.cpp
index 7cbdd8089..e0da11a2f 100644
--- a/src/ModelAPI/ModelAPI_Tools.cpp
+++ b/src/ModelAPI/ModelAPI_Tools.cpp
@@ -37,7 +37,19 @@
 #include <map>
 #include <iostream>
 #include <sstream>
+
+// To support old types of GCC (less than 5.0), check the wide-string conversion is working
+#if (__cplusplus >= 201103L || _MSVC_LANG >= 201103L)  && \
+    (__cplusplus >= 201402L || !defined(__GLIBCXX__)   || \
+    (defined(_GLIBCXX_RELEASE) && _GLIBCXX_RELEASE > 4))
+#define HAVE_WORKING_WIDESTRING 1
+#else
+#define HAVE_WORKING_WIDESTRING 0
+#endif
+
+#if HAVE_WORKING_WIDESTRING
 #include <codecvt>
+#endif
 
 #include <Events_Loop.h>
 #include <ModelAPI_Events.h>
@@ -1107,8 +1119,18 @@ std::list<FeaturePtr> referencedFeatures(
 // LCOV_EXCL_STOP
 std::string toString(const std::wstring& theWStr)
 {
+#if HAVE_WORKING_WIDESTRING
   static std::wstring_convert<std::codecvt_utf8<wchar_t> > aConvertor;
   return aConvertor.to_bytes(theWStr);
+#else
+  char* aBuf = new char[2 * (theWStr.size() + 1)];
+  size_t aNbChars = std::wcstombs(aBuf, theWStr.c_str(), theWStr.size());
+  if (aNbChars != (size_t)-1)
+    aBuf[aNbChars] = '\0';
+  std::string aStr(aBuf);
+  delete[] aBuf;
+  return aStr;
+#endif
 }
 
 /*! Converts a byte string to an extended string
@@ -1116,8 +1138,18 @@ std::string toString(const std::wstring& theWStr)
 */
 std::wstring toWString(const std::string& theStr)
 {
+#if HAVE_WORKING_WIDESTRING
   static std::wstring_convert<std::codecvt_utf8<wchar_t> > aConvertor;
   return aConvertor.from_bytes(theStr);
+#else
+  wchar_t* aBuf = new wchar_t[theStr.size()];
+  size_t aNbWChars = std::mbstowcs(aBuf, theStr.c_str(), theStr.size());
+  if (aNbWChars != (size_t)-1)
+    aBuf[aNbWChars] = '\0';
+  std::wstring aWStr(aBuf);
+  delete[] aBuf;
+  return aWStr;
+#endif
 }
 
 
-- 
2.39.2