当我std::string通过调用字符串将 a 发送到输出流时，ostream << string.c_str();该字符串未正确终止。为什么是这样？
class Application {
public:
bool print() {
out << "Content-Type: text/html; charset=utf-8\r\n\r\n";
std::ifstream inFileStream;
inFileStream.open("./test.html");
if(!inFileStream.is_open()) {
out << "Error Opening File";
return true;
}
boost::uintmax_t templateSize = boost::filesystem::file_size("./test.html");
std::string output;
char* templateData = new char[templateSize];
char* bytePtr = templateData;
inFileStream.read(templateData, templateSize);
std::ofstream logFile;
logFile.open("/tmp/test.log");
while(*bytePtr != EOF) {
if(*bytePtr == '{')
readVar(&bytePtr, &output);
else
output.push_back(*bytePtr);
bytePtr++;
}
delete[] templateData;
output.push_back(0);
logFile << output.c_str();
return true;
}
private:
void readVar(char** bytePtrPtr, std::string* output) {
while(**bytePtrPtr != EOF) {
if(**bytePtrPtr == '}')
return;
output->push_back('*');
(*bytePtrPtr)++;
}
}
};
这个（在日志文件中）的输出包括正确解析的test.html，但也包括一些额外的字节垃圾。