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more improvements:

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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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37
serviceinterface/ServiceInterfaceStream.h
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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_ */