more improvements:

1. New optional flag to redirect print to stderr. THis can be useful on
host environemtns (e.g linux)
2. non-buffered mode if this flag is true: the preamble msut be printed
manually
2. Getter function for preamble for that case.
3. printChar function: specify whether to print to stderr or stdout
This commit is contained in:
Robin Müller 2020-06-03 23:14:17 +02:00
parent e5cea3ead0
commit 7259a13569
4 changed files with 131 additions and 62 deletions

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@ -3,9 +3,42 @@
#include <cstring>
// to be implemented by bsp
extern "C" void printChar(const char*);
extern "C" void printChar(const char*, bool errStream);
#ifndef UT699
ServiceInterfaceBuffer::ServiceInterfaceBuffer(std::string setMessage,
bool errStream, bool addCrToPreamble, uint16_t port):
isActive(true), logMessage(setMessage),
addCrToPreamble(addCrToPreamble), errStream(errStream) {
if(not errStream) {
// Set pointers if the stream is buffered.
setp( buf, buf + BUF_SIZE );
}
}
void ServiceInterfaceBuffer::putChars(char const* begin, char const* end) {
char array[BUF_SIZE];
uint32_t length = end - begin;
if (length > sizeof(array)) {
length = sizeof(array);
}
memcpy(array, begin, length);
for(; begin != end; begin++){
printChar(begin, false);
}
}
#endif
int ServiceInterfaceBuffer::overflow(int c) {
if(errStream and this->isActive) {
if (c != Traits::eof()) {
printChar(reinterpret_cast<const char*>(&c), true);
}
return 0;
}
// Handle output
putChars(pbase(), pptr());
if (c != Traits::eof()) {
@ -20,53 +53,38 @@ int ServiceInterfaceBuffer::overflow(int c) {
}
int ServiceInterfaceBuffer::sync(void) {
if (this->isActive) {
Clock::TimeOfDay_t loggerTime;
Clock::getDateAndTime(&loggerTime);
std::string preamble;
if(addCrToPreamble) {
preamble += "\r";
if(not this->isActive or errStream) {
if(not errStream) {
setp(buf, buf + BUF_SIZE - 1);
}
preamble += log_message + ": | " + zero_padded(loggerTime.hour, 2)
+ ":" + zero_padded(loggerTime.minute, 2) + ":"
+ zero_padded(loggerTime.second, 2) + "."
+ zero_padded(loggerTime.usecond/1000, 3) + " | ";
// Write log_message and time
return 0;
}
auto preamble = getPreamble();
// Write logMessage and time
this->putChars(preamble.c_str(), preamble.c_str() + preamble.size());
// Handle output
this->putChars(pbase(), pptr());
}
// This tells that buffer is empty again
setp(buf, buf + BUF_SIZE - 1);
return 0;
}
#ifndef UT699
ServiceInterfaceBuffer::ServiceInterfaceBuffer(std::string set_message,
uint16_t port, bool addCrToPreamble) {
this->addCrToPreamble = addCrToPreamble;
this->log_message = set_message;
this->isActive = true;
setp( buf, buf + BUF_SIZE );
std::string ServiceInterfaceBuffer::getPreamble() {
Clock::TimeOfDay_t loggerTime;
Clock::getDateAndTime(&loggerTime);
std::string preamble;
if(addCrToPreamble) {
preamble += "\r";
}
preamble += logMessage + ": | " + zero_padded(loggerTime.hour, 2)
+ ":" + zero_padded(loggerTime.minute, 2) + ":"
+ zero_padded(loggerTime.second, 2) + "."
+ zero_padded(loggerTime.usecond/1000, 3) + " | ";
return preamble;
}
void ServiceInterfaceBuffer::putChars(char const* begin, char const* end) {
char array[BUF_SIZE];
uint32_t length = end - begin;
if (length > sizeof(array)) {
length = sizeof(array);
}
memcpy(array, begin, length);
for(; begin != end; begin++){
printChar(begin);
}
}
#endif
#ifdef UT699

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@ -3,43 +3,64 @@
#include <iostream>
#include <sstream>
#include <cstdio>
#include <iomanip>
#ifndef UT699
/**
* @brief This is the underlying stream buffer which implements the
* streambuf class and overloads the overflow() and sync() methods
* @details
* This class is used to modify the output of the stream, for example by adding.
* It also calls the char printing function which is implemented in the
* board supply package (BSP).
*/
class ServiceInterfaceBuffer:
public std::basic_streambuf<char,std::char_traits<char>> {
public std::streambuf {
friend class ServiceInterfaceStream;
public:
ServiceInterfaceBuffer(std::string set_message, uint16_t port,
bool addCrToPreamble);
ServiceInterfaceBuffer(std::string setMessage, bool errStream,
bool addCrToPreamble, uint16_t port);
protected:
bool isActive;
// This is called when buffer becomes full. If
// buffer is not used, then this is called every
// time when characters are put to stream.
//! This is called when buffer becomes full. If
//! buffer is not used, then this is called every
//! time when characters are put to stream.
int overflow(int c = Traits::eof()) override;
// This function is called when stream is flushed,
// for example when std::endl is put to stream.
//! This function is called when stream is flushed,
//! for example when std::endl is put to stream.
int sync(void) override;
private:
// For additional message information
std::string log_message;
//! For additional message information
std::string logMessage;
// For EOF detection
typedef std::char_traits<char> Traits;
// This is useful for some terminal programs which do not have
// implicit carriage return with newline characters.
//! This is useful for some terminal programs which do not have
//! implicit carriage return with newline characters.
bool addCrToPreamble;
//! This specifies to print to stderr and work in unbuffered mode.
bool errStream;
// Work in buffer mode. It is also possible to work without buffer.
static size_t const BUF_SIZE = 128;
char buf[BUF_SIZE];
// In this function, the characters are parsed.
//! In this function, the characters are parsed.
void putChars(char const* begin, char const* end);
std::string getPreamble();
/**
* This helper function returns the zero padded string version of a number.
* The type is deduced automatically.
* @tparam T
* @param num
* @param width
* @return
*/
template<typename T>
std::string zero_padded(const T& num, uint8_t width) {
std::ostringstream string_to_pad;
@ -52,6 +73,7 @@ private:
return result;
}
};
#endif

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@ -1,11 +1,15 @@
#include <framework/serviceinterface/ServiceInterfaceStream.h>
ServiceInterfaceStream::ServiceInterfaceStream(std::string setMessage,
bool errStream, bool addCrToPreamble, uint16_t port) :
std::ostream(&buf),
buf(setMessage, errStream, addCrToPreamble, port) {
}
void ServiceInterfaceStream::setActive( bool myActive) {
this->buf.isActive = myActive;
}
ServiceInterfaceStream::ServiceInterfaceStream(std::string set_message,
bool addCrToPreamble, uint16_t port) :
std::basic_ostream<char, std::char_traits<char>>(&buf),
buf(set_message, port, addCrToPreamble) {
std::string ServiceInterfaceStream::getPreamble() {
return buf.getPreamble();
}

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@ -3,11 +3,9 @@
#include <framework/serviceinterface/ServiceInterfaceBuffer.h>
#include <iostream>
#include <iosfwd>
#include <sstream>
#include <cstdio>
// Unfortunately, there must be a forward declaration of log_fe
// Unfortunately, there must be a forward declaration of the log front end
// (MUST be defined in main), to let the system know where to write to.
namespace sif {
extern std::ostream debug;
@ -18,14 +16,41 @@ extern std::ostream error;
class ServiceInterfaceStream :
public std::basic_ostream<char, std::char_traits<char>> {
public std::ostream {
protected:
ServiceInterfaceBuffer buf;
public:
ServiceInterfaceStream( std::string set_message,
bool addCrToPreamble = false, uint16_t port = 1234);
/**
* 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 set_message
* @param errStream
* @param addCrToPreamble
* @param port
*/
ServiceInterfaceStream(std::string setMessage,
bool errStream = false, bool addCrToPreamble = false,
uint16_t port = 1234);
//! An inactive stream will not print anything.
void setActive( bool );
/**
* This can be used to retrieve the preamble in case it should be printed in
* the unbuffered mode.
* @return Preamle consisting of log message and timestamp.
*/
std::string getPreamble();
};
// Forward declaration of interface streams. These are needed so the public
// functions can be used by including this header
namespace sif {
extern ServiceInterfaceStream debugStream;
extern ServiceInterfaceStream infoStream;
extern ServiceInterfaceStream warningStream;
extern ServiceInterfaceStream errorStream;
}
#endif /* FRAMEWORK_SERVICEINTERFACE_SERVICEINTERFACESTREAM_H_ */