1 files changed, 113 insertions, 0 deletions
diff --git a/contrib/replxx/src/conversion.cxx b/contrib/replxx/src/conversion.cxx
new file mode 100644
index 000000000..0b4c5fa48
--- /dev/null
+++ b/contrib/replxx/src/conversion.cxx
@@ -0,0 +1,113 @@
+#include <algorithm>
+#include <string>
+#include <cstring>
+#include <cctype>
+#include <locale.h>
+
+#include "conversion.hxx"
+
+#ifdef _WIN32
+#define strdup _strdup
+#endif
+
+using namespace std;
+
+namespace replxx {
+
+namespace locale {
+
+void to_lower( std::string& s_ ) {
+	transform( s_.begin(), s_.end(), s_.begin(), static_cast<int(*)(int)>( &tolower ) );
+}
+
+bool is_8bit_encoding( void ) {
+	bool is8BitEncoding( false );
+	string origLC( setlocale( LC_CTYPE, nullptr ) );
+	string lc( origLC );
+	to_lower( lc );
+	if ( lc == "c" ) {
+		setlocale( LC_CTYPE, "" );
+	}
+	lc = setlocale( LC_CTYPE, nullptr );
+	setlocale( LC_CTYPE, origLC.c_str() );
+	to_lower( lc );
+	if ( lc.find( "8859" ) != std::string::npos ) {
+		is8BitEncoding = true;
+	}
+	return ( is8BitEncoding );
+}
+
+bool is8BitEncoding( is_8bit_encoding() );
+
+}
+
+ConversionResult copyString8to32(char32_t* dst, int dstSize, int& dstCount, const char* src) {
+	ConversionResult res = ConversionResult::conversionOK;
+	if ( ! locale::is8BitEncoding ) {
+		const UTF8* sourceStart = reinterpret_cast<const UTF8*>(src);
+		const UTF8* sourceEnd = sourceStart + strlen(src);
+		UTF32* targetStart = reinterpret_cast<UTF32*>(dst);
+		UTF32* targetEnd = targetStart + dstSize;
+
+		res = ConvertUTF8toUTF32(
+				&sourceStart, sourceEnd, &targetStart, targetEnd, lenientConversion);
+
+		if (res == conversionOK) {
+			dstCount = targetStart - reinterpret_cast<UTF32*>(dst);
+
+			if (dstCount < dstSize) {
+				*targetStart = 0;
+			}
+		}
+	} else {
+		for ( dstCount = 0; ( dstCount < dstSize ) && src[dstCount]; ++ dstCount ) {
+			dst[dstCount] = src[dstCount];
+		}
+	}
+	return res;
+}
+
+ConversionResult copyString8to32(char32_t* dst, int dstSize, int& dstCount, const char8_t* src) {
+	return copyString8to32(
+		dst, dstSize, dstCount, reinterpret_cast<const char*>(src)
+	);
+}
+
+void copyString32to8(
+	char* dst, int dstSize, const char32_t* src, int srcSize, int* dstCount
+) {
+	if ( ! locale::is8BitEncoding ) {
+		const UTF32* sourceStart = reinterpret_cast<const UTF32*>(src);
+		const UTF32* sourceEnd = sourceStart + srcSize;
+		UTF8* targetStart = reinterpret_cast<UTF8*>(dst);
+		UTF8* targetEnd = targetStart + dstSize;
+
+		ConversionResult res = ConvertUTF32toUTF8(
+				&sourceStart, sourceEnd, &targetStart, targetEnd, lenientConversion);
+
+		if (res == conversionOK) {
+			int resCount( targetStart - reinterpret_cast<UTF8*>( dst ) );
+
+			if ( resCount < dstSize ) {
+				*targetStart = 0;
+			}
+			if ( dstCount ) {
+				*dstCount = resCount;
+			}
+		}
+	} else {
+		int i( 0 );
+		for ( i = 0; ( i < dstSize ) && ( i < srcSize ) && src[i]; ++ i ) {
+			dst[i] = static_cast<char>( src[i] );
+		}
+		if ( dstCount ) {
+			*dstCount = i;
+		}
+		if ( i < dstSize ) {
+			dst[i] = 0;
+		}
+	}
+}
+
+}
+