131   std::ostringstream data_stream;  in CreateStandardSectionXmpString()  local
132   data_stream.write(XmpConst::Header(), strlen(XmpConst::Header()));  in CreateStandardSectionXmpString()
133   data_stream.write(kCEmptyString, 1);  in CreateStandardSectionXmpString()
134   data_stream.write(buffer.c_str(), buffer.length());  in CreateStandardSectionXmpString()
135   *value = data_stream.str();  in CreateStandardSectionXmpString()
156     std::ostringstream data_stream;  in CreateExtendedSections()  local
157     data_stream.write(XmpConst::ExtensionHeader(),  in CreateExtendedSections()
159     data_stream.write(kCEmptyString, 1);  in CreateExtendedSections()
160     data_stream.write(guid.c_str(), guid.length());  in CreateExtendedSections()
163     WriteIntTo4Bytes(buffer_length, &data_stream);  in CreateExtendedSections()
165     WriteIntTo4Bytes(position, &data_stream);  in CreateExtendedSections()
167     data_stream.write(&buffer[position], bytes_from_buffer);  in CreateExtendedSections()
170     extended_sections->push_back(Section(data_stream.str()));  in CreateExtendedSections()