EXT-8318 ADDITIONAL FIXED ensure that thousands separator is in utf8 format (on Windows) before converting it to LLWString.

Problem on Windows:
==================

LLPanelMainInventory::updateItemcountText() formats number using viewer locale.
non-break space is detected as unknown symbols while converting utf8str_to_wstring when formatted text is set to LLTextBox.

FIX:
===

Added converting of string to multi-byte string and then to utf8 string while formatting on Windows.
  created opposite to "ll_convert_wide_to_string" function "ll_convert_string_to_wide" and helper function to call both of them.
  It is used now to convert result of formatted string while formatting integer number in locale.

Fix affects Windows only.

Reviewed by Richard Nelson at https://codereview.productengine.com/secondlife/r/775/

--HG--
branch : product-engine

4 files changed, 74 insertions, 8 deletions

diff --git a/indra/llcommon/llformat.cpp b/indra/llcommon/llformat.cpp
index cf509bee14..689f649d0a 100644
--- a/indra/llcommon/llformat.cpp
+++ b/indra/llcommon/llformat.cpp
@@ -37,16 +37,40 @@
 
 #include <cstdarg>
 
-std::string llformat(const char *fmt, ...)
+// common used function with va_list argument
+// wrapper for vsnprintf to be called from llformatXXX functions.
+static void va_format(std::string& out, const char *fmt, va_list va)
 {
 	char tstr[1024];	/* Flawfinder: ignore */
-	va_list va;
-	va_start(va, fmt);
 #if LL_WINDOWS
 	_vsnprintf(tstr, 1024, fmt, va);
 #else
 	vsnprintf(tstr, 1024, fmt, va);	/* Flawfinder: ignore */
 #endif
+	out.assign(tstr);
+}
+
+std::string llformat(const char *fmt, ...)
+{
+	std::string res;
+	va_list va;
+	va_start(va, fmt);
+	va_format(res, fmt, va);
 	va_end(va);
-	return std::string(tstr);
+	return res;
+}
+
+std::string llformat_to_utf8(const char *fmt, ...)
+{
+	std::string res;
+	va_list va;
+	va_start(va, fmt);
+	va_format(res, fmt, va);
+	va_end(va);
+
+#if LL_WINDOWS
+	// made converting to utf8. See EXT-8318.
+	res = ll_convert_string_to_utf8_string(res);
+#endif
+	return res;
 }
diff --git a/indra/llcommon/llformat.h b/indra/llcommon/llformat.h
index dc64edb26d..17d8b4a8ad 100644
--- a/indra/llcommon/llformat.h
+++ b/indra/llcommon/llformat.h
@@ -42,4 +42,8 @@
 
 std::string LL_COMMON_API llformat(const char *fmt, ...);
 
+// the same version as above but ensures that returned string is in utf8 on windows
+// to enable correct converting utf8_to_wstring.
+std::string LL_COMMON_API llformat_to_utf8(const char *fmt, ...);
+
 #endif // LL_LLFORMAT_H
diff --git a/indra/llcommon/llstring.cpp b/indra/llcommon/llstring.cpp
index 1561bda201..804c00fd60 100644
--- a/indra/llcommon/llstring.cpp
+++ b/indra/llcommon/llstring.cpp
@@ -633,14 +633,14 @@ namespace snprintf_hack
 	}
 }
 
-std::string ll_convert_wide_to_string(const wchar_t* in)
+std::string ll_convert_wide_to_string(const wchar_t* in, unsigned int code_page)
 {
 	std::string out;
 	if(in)
 	{
 		int len_in = wcslen(in);
 		int len_out = WideCharToMultiByte(
-			CP_ACP,
+			code_page,
 			0,
 			in,
 			len_in,
@@ -655,7 +655,7 @@ std::string ll_convert_wide_to_string(const wchar_t* in)
 		if(pout)
 		{
 			WideCharToMultiByte(
-				CP_ACP,
+				code_page,
 				0,
 				in,
 				len_in,
@@ -669,6 +669,31 @@ std::string ll_convert_wide_to_string(const wchar_t* in)
 	}
 	return out;
 }
+
+wchar_t* ll_convert_string_to_wide(const std::string& in, unsigned int code_page)
+{
+	int output_str_len = MultiByteToWideChar(code_page, 0, in.c_str(), in.length(), NULL, 0);
+
+	// reserve place to NULL terminator
+	wchar_t* w_out = new wchar_t[output_str_len + 1];
+
+	memset(w_out, 0, output_str_len + 1);
+	MultiByteToWideChar (code_page, 0, in.c_str(), in.length(), w_out, output_str_len);
+
+	//looks like MultiByteToWideChar didn't add null terminator to converted string, see EXT-4858.
+	w_out[output_str_len] = 0;
+
+	return w_out;
+}
+
+std::string ll_convert_string_to_utf8_string(const std::string& in)
+{
+	wchar_t* w_mesg = ll_convert_string_to_wide(in, CP_ACP);
+	std::string out_utf8 = ll_convert_wide_to_string(w_mesg, CP_UTF8);
+	delete[] w_mesg;
+
+	return out_utf8;
+}
 #endif // LL_WINDOWS
 
 long LLStringOps::sPacificTimeOffset = 0;
diff --git a/indra/llcommon/llstring.h b/indra/llcommon/llstring.h
index 8071c8aa2d..41fac0f8cc 100644
--- a/indra/llcommon/llstring.h
+++ b/indra/llcommon/llstring.h
@@ -564,7 +564,20 @@ using snprintf_hack::snprintf;
  *
  * This replaces the unsafe W2A macro from ATL.
  */
-LL_COMMON_API std::string ll_convert_wide_to_string(const wchar_t* in);
+LL_COMMON_API std::string ll_convert_wide_to_string(const wchar_t* in, unsigned int code_page);
+
+/**
+ * Converts a string to wide string.
+ *
+ * It will allocate memory for result string with "new []". Don't forget to release it with "delete []".
+ */
+LL_COMMON_API wchar_t* ll_convert_string_to_wide(const std::string& in, unsigned int code_page);
+
+/**
+ * Converts incoming string into urf8 string
+ *
+ */
+LL_COMMON_API std::string ll_convert_string_to_utf8_string(const std::string& in);
 
 //@}
 #endif // LL_WINDOWS