no run-time dyn memory allocation now

serviceinterface/ServiceInterfaceBuffer.cpp

@@ -68,12 +68,15 @@ int ServiceInterfaceBuffer::overflow(int c) {
 }
 
 int ServiceInterfaceBuffer::sync(void) {
-	if(not this->isActive) {
+	if(not this->isActive and not buffered) {
 		if(not buffered) {
 			setp(buf, buf + BUF_SIZE - 1);
 		}
 		return 0;
 	}
+	if(not buffered) {
+		return 0;
+	}
 
 	size_t preambleSize  = 0;
 	auto preamble = getPreamble(&preambleSize);
@@ -88,6 +91,9 @@ int ServiceInterfaceBuffer::sync(void) {
 	return 0;
 }
 
+bool ServiceInterfaceBuffer::isBuffered() const {
+	return buffered;
+}
 
 std::string ServiceInterfaceBuffer::getPreamble(size_t * preambleSize) {
 	Clock::TimeOfDay_t loggerTime;

serviceinterface/ServiceInterfaceBuffer.h

@@ -34,6 +34,7 @@ protected:
 	//! for example when std::endl is put to stream.
 	int sync(void) override;
 
+	bool isBuffered() const;
 private:
 	//! For additional message information
 	std::string logMessage;
@@ -43,10 +44,10 @@ private:
 	//! This is useful for some terminal programs which do not have
 	//! implicit carriage return with newline characters.
 	bool addCrToPreamble;
-	bool buffered;
+
 	//! This specifies to print to stderr and work in unbuffered mode.
 	bool errStream;
-
+	bool buffered;
 	// Work in buffer mode. It is also possible to work without buffer.
 	static size_t const BUF_SIZE = 128;
 	char buf[BUF_SIZE];
@@ -55,29 +56,6 @@ private:
 	void putChars(char const* begin, char const* end);
 
 	std::string getPreamble(size_t * preambleSize = nullptr);
-
-	/**
-	 * This helper function returns the zero padded string version of a number.
-	 * The type is deduced automatically.
-	 * TODO: This uses dynamic memory allocation, so we should provide
-	 * a custom streambuf class to use it (which takes maxSize as argument)
-	 * Then we would propably
-	 * @tparam T
-	 * @param num
-	 * @param width
-	 * @return
-	 */
-	template<typename T>
-	ReturnValue_t zeroPadded(std::string stringToFill, const T& num,
-			uint8_t width) {
-		auto numString = std::to_string(num);
-		uint8_t i = 0;
-		for(i = 0; i < width; i++) {
-			stringToFill[i] = '0';
-		}
-		numString.copy(stringToFill.data() + i, numString.size());
-		return HasReturnvaluesIF::RETURN_OK;
-	}
 };
 
 #endif

serviceinterface/ServiceInterfaceStream.cpp

@@ -2,21 +2,20 @@
 
 ServiceInterfaceStream::ServiceInterfaceStream(std::string setMessage,
 		bool addCrToPreamble, bool buffered, bool errStream, uint16_t port) :
-		std::ostream(&buf),
-		buf(setMessage, addCrToPreamble, buffered, errStream,  port) {
-}
+		std::ostream(&streambuf),
+		streambuf(setMessage, addCrToPreamble, buffered, errStream, port) {}
 
 void ServiceInterfaceStream::setActive( bool myActive) {
-	this->buf.isActive = myActive;
+	this->streambuf.isActive = myActive;
 }
 
 std::string ServiceInterfaceStream::getPreamble() {
-	return buf.getPreamble();
+	return streambuf.getPreamble();
 }
 
 void ServiceInterfaceStream::print(std::string error,
 		bool withPreamble, bool withNewline, bool flush) {
-	if(not buffered and withPreamble) {
+	if(not streambuf.isBuffered() and withPreamble) {
 		*this << getPreamble() << error;
 	}
 	else {
@@ -27,7 +26,7 @@ void ServiceInterfaceStream::print(std::string error,
 		*this << "\n";
 	}
 	// if mode is non-buffered, no need to flush.
-	if(flush and buffered) {
+	if(flush and streambuf.isBuffered()) {
 		this->flush();
 	}
 }

serviceinterface/ServiceInterfaceStream.h

@@ -10,25 +10,22 @@
  * std::cerr but has additional capability. Add preamble and timestamp
  * to output. Can be run in buffered or unbuffered mode.
  */
-class ServiceInterfaceStream :
-        public std::ostream {
-protected:
-    ServiceInterfaceBuffer buf;
+class ServiceInterfaceStream : public std::ostream {
 public:
-    /**
-     * This constructor is used by specifying the preamble message.
-     * Optionally, the output can be directed to stderr and a CR character
-     * can be prepended to the preamble.
-     * @param setMessage message of preamble.
-     * @param addCrToPreamble Useful for applications like Puttty.
-     * @param buffered specify whether to use buffered mode.
-     * @param errStream specify which output stream to use (stderr or stdout).
-     */
-    ServiceInterfaceStream(std::string setMessage,
-    		bool addCrToPreamble = false, bool buffered = true,
+	/**
+	 * This constructor is used by specifying the preamble message.
+	 * Optionally, the output can be directed to stderr and a CR character
+	 * can be prepended to the preamble.
+	 * @param setMessage message of preamble.
+	 * @param addCrToPreamble Useful for applications like Puttty.
+	 * @param buffered specify whether to use buffered mode.
+	 * @param errStream specify which output stream to use (stderr or stdout).
+	 */
+	ServiceInterfaceStream(std::string setMessage,
+			bool addCrToPreamble = false, bool buffered = true,
 			bool errStream = false, uint16_t port = 1234);
 
-    //! An inactive stream will not print anything.
+	//! An inactive stream will not print anything.
 	void setActive( bool );
 
 	/**
@@ -45,7 +42,8 @@ public:
 	void print(std::string error, bool withPreamble = true,
 			bool withNewline = true, bool flush = true);
 
-	bool buffered = false;
+protected:
+	ServiceInterfaceBuffer streambuf;
 };
 
 // Forward declaration of interface streams. These should be instantiated in