Fixed Multi-byte conversions

- Make sure the locale is set correctly (Linux doesn't default set it)
- And send correct size during w_char->char conversion
This means alternate languages with "emphasis" characters now work on
linux

sources/impl/LowLevelSystemSDL.cpp

@@ -51,6 +51,8 @@
 
 #include "system/String.h"
 
+#include <clocale>
+
 extern int hplMain(const hpl::tString &asCommandLine);
 
 #ifdef WIN32
@@ -62,6 +64,12 @@ int WINAPI WinMain(	HINSTANCE hInstance,  HINSTANCE hPrevInstance,LPSTR	lpCmdLin
 #else
 int main(int argc, char *argv[])
 {
+	if(!std::setlocale(LC_CTYPE, "")) {
+		fprintf(stderr, "Can't set the specified locale! Check LANG, LC_CTYPE, LC_ALL.\n");
+		return 1;
+	}
+
+
 	hpl::tString cmdline = "";
 	for (int i=1; i < argc; i++) {
 		if (cmdline.length()>0) {

sources/system/String.cpp

@@ -33,9 +33,9 @@ namespace hpl {
 	tWString cString::To16Char(const tString &asString)
 	{
 		tWString wsTemp;
-		size_t needed = mbstowcs(NULL,&asString[0],asString.length());
+		size_t needed = mbstowcs(NULL,&asString[0],0);
 		wsTemp.resize(needed);
-		mbstowcs(&wsTemp[0],&asString[0],asString.length());
+		mbstowcs(&wsTemp[0],&asString[0],needed);
 
 		return wsTemp;
 	}
@@ -45,9 +45,9 @@ namespace hpl {
 	tString cString::To8Char(const tWString &awsString)
 	{
 		tString sTemp;
-		size_t needed = wcstombs(NULL,&awsString[0],awsString.length());
+		size_t needed = wcstombs(NULL,&awsString[0],0);
 		sTemp.resize(needed);
-		wcstombs(&sTemp[0],&awsString[0],awsString.length());
+		wcstombs(&sTemp[0],&awsString[0],needed);
 
 		return sTemp;
 	}