Fixes a compilation error in Reader when using encoded stream.

Added unit test for parsing EncodedStream to Document.

include/rapidjson/encodedstream.h

@@ -30,7 +30,7 @@ public:
 	size_t Tell() const { return is_.Tell(); }
 
 	// Not implemented
-	void Put(Ch c) { RAPIDJSON_ASSERT(false); }
+	void Put(Ch) { RAPIDJSON_ASSERT(false); }
 	void Flush() { RAPIDJSON_ASSERT(false); } 
 	Ch* PutBegin() { RAPIDJSON_ASSERT(false); return 0; }
 	size_t PutEnd(Ch*) { RAPIDJSON_ASSERT(false); return 0; }

include/rapidjson/reader.h

@@ -491,7 +491,7 @@ private:
 		InputStream& s(copy.s);
 
 		if (parseFlags & kParseInsituFlag) {
-			Ch *head = s.PutBegin();
+			typename InputStream::Ch *head = s.PutBegin();
 			ParseStringToStream<parseFlags, SourceEncoding, SourceEncoding>(s, s);
 			if (HasParseError())
 				return;

test/unittest/documenttest.cpp

@@ -1,6 +1,9 @@
 #include "unittest.h"
 #include "rapidjson/document.h"
 #include "rapidjson/writer.h"
+#include "rapidjson/filereadstream.h"
+#include "rapidjson/encodedstream.h"
+#include "rapidjson/stringbuffer.h"
 #include <sstream>
 
 using namespace rapidjson;
@@ -47,6 +50,57 @@ TEST(Document, Parse) {
 		EXPECT_EQ(i + 1, a[i].GetUint());
 }
 
+static FILE* OpenEncodedFile(const char* filename) {
+	char buffer[1024];
+	sprintf(buffer, "encodings/%s", filename);
+	FILE *fp = fopen(buffer, "rb");
+	if (!fp) {
+		sprintf(buffer, "../../bin/encodings/%s", filename);
+		fp = fopen(buffer, "rb");
+	}
+	return fp;
+}
+
+TEST(Document, ParseStream_EncodedInputStream) {
+	// UTF8 -> UTF16
+	FILE* fp = OpenEncodedFile("utf8.json");
+	char buffer[256];
+	FileReadStream bis(fp, buffer, sizeof(buffer));
+	EncodedInputStream<UTF8<>, FileReadStream> eis(bis);
+
+	GenericDocument<UTF16<> > d;
+	d.ParseStream<0, UTF8<> >(eis);
+	EXPECT_FALSE(d.HasParseError());
+
+	fclose(fp);
+
+	wchar_t expected[] = L"I can eat glass and it doesn't hurt me.";
+	GenericValue<UTF16<> >& v = d[L"en"];
+	EXPECT_TRUE(v.IsString());
+	EXPECT_EQ(sizeof(expected) / sizeof(wchar_t) - 1, v.GetStringLength());
+	EXPECT_EQ(0, StrCmp(expected, v.GetString()));
+
+	// UTF16 -> UTF8 in memory
+	StringBuffer bos;
+	typedef EncodedOutputStream<UTF8<>, StringBuffer> OutputStream;
+	OutputStream eos(bos, false);	// Not writing BOM
+	Writer<OutputStream, UTF16<>, UTF8<> > writer(eos);
+	d.Accept(writer);
+
+	{
+		// Condense the original file and compare.
+		FILE *fp = OpenEncodedFile("utf8.json");
+		FileReadStream is(fp, buffer, sizeof(buffer));
+		Reader reader;
+		StringBuffer bos2;
+		Writer<StringBuffer> writer(bos2);
+		reader.Parse(is, writer);
+
+		EXPECT_EQ(bos.GetSize(), bos2.GetSize());
+		EXPECT_EQ(0, memcmp(bos.GetString(), bos2.GetString(), bos2.GetSize()));
+	}
+}
+
 TEST(Document, Swap) {
 	Document d1;
 	Document::AllocatorType& a = d1.GetAllocator();