add ByteReader::remaining()

src/coders/byte_utils.cpp

@@ -9,7 +9,7 @@ void ByteBuilder::put(ubyte b) {
 }
 
 void ByteBuilder::putCStr(const char* str) {
-    size_t size = strlen(str) + 1;
+    size_t size = std::strlen(str) + 1;
     buffer.reserve(buffer.size() + size);
     for (size_t i = 0; i < size; i++) {
         buffer.push_back(str[i]);
@@ -188,7 +188,7 @@ const char* ByteReader::getCString() {
 }
 
 std::string ByteReader::getString() {
-    uint32_t length = (uint32_t)getInt32();
+    uint32_t length = static_cast<uint32_t>(getInt32());
     if (pos + length > size) {
         throw std::runtime_error("buffer underflow");
     }
@@ -202,6 +202,10 @@ bool ByteReader::hasNext() const {
     return pos < size;
 }
 
+size_t ByteReader::remaining() const {
+    return size - pos;
+}
+
 const ubyte* ByteReader::pointer() const {
     return data + pos;
 }

src/coders/byte_utils.hpp

@@ -74,6 +74,8 @@ public:
     std::string getString();
     /// @return true if there is at least one byte remains
     bool hasNext() const;
+    /// @return Number of remaining bytes in buffer
+    size_t remaining() const;
 
     const ubyte* pointer() const;
     void skip(size_t n);