NAME

       FBB::level - Manipulator setting the log-level of FBB::Log objects

SYNOPSIS

       #include <bobcat/level>
       Linking option: -lbobcat

DESCRIPTION

       An FBB::level object is used to specify insertion `forces’ of information that is inserted
       into FBB::Log objects. When inserted into Log objects it defines the `force’ of subsequent
       insertions (or write calls) into those Log objects.

       Conversely,  Log  objects  may  specify  insertion  `resistances’  through  their setLevel
       members. If the level’s `force’ is equal to or exceeds the Log object’s `resistance’  then
       the  insertion  is  performed,  otherwise  the  insertion  is  ignored. A single insertion
       statement may contain multiple level calls. If  so,  then  each  level  call  updates  the
       `force’ of insertions following the level call.

       By default insertions into Log objects not preceded by level insertions are completed.

       When  a level object is inserted into another kind of std::ostream object the level object
       performs no actions.

NAMESPACE

       FBB
       All constructors, members, operators and manipulators, mentioned  in  this  man-page,  are
       defined in the namespace FBB.

INHERITS FROM

       -

CONSTRUCTORS

       o      level(size_t force):
              This constructor is used in insertion statements, usually inserting it as anonymous
              object into an FBB::Log object.

       Copy and move constructors (and assignment operators) are available.

OVERLOADED OPERATOR

       o      std::ostream &::operator<<(std::ostream &ostr, FBB::level const &force):
              If the ostr can be downcasted to an FBB::Log object then subsequent insertions  are
              performed  if  force  exceeds  the  Log  object’s  `resistance’ as specified by its
              setLevel member.  If ostr does not actually refer to a  Log  object  then  ostr  is
              returned  without any further action, and ostr handles subsequent insertions in its
              default way.

EXAMPLE

       #include <iostream>
       #include <iomanip>

       //#include <bobcat/log>
       #include "../log"

       #include <bobcat/level>

       using namespace std;
       using namespace FBB;

       int main()
       {
       //    Log &log = Log::initialize("&1"); // uses the static Log object
           Log log;                        // explicitly defining a Log object
       //    log.open("/tmp/out");           // or at once: Log log{ "/tmp/out" }

           log << "This message is written to cout" << nl <<
                  setw(16) << ’ ’ << "occupying multiple lines\n";

           log.off();
           log << "This message is not shown\n";
           log << "This message is not shown\n";
           log << fnl;
           log << "This message is not shown\n";

           log.on(2);
           log << "This message is shown\n";

           log << level(0) << "not shown" << level(2) << "shown at level 2\n";
           log << level(3) << "at level(3)" << level(1) << "not shown" << fnl;

           log << "separate new line\n";

           log << level(2) << "in business again\n";
           log << "final line\n";

           log.str("ab");

           log(’a’) << "hello a!" << endl;
           log(’b’) << "hello b!" << nl <<
                       setw(16) << ’ ’ << "so far, so good" << endl;

           log << "not shown" << endl;

           log(’c’) << "not shown\n";
           log << "not shown\n";

           log.setLevel(2);
           log << level(2) << "in business again\n";
       }

FILES

       bobcat/level - defines the class interface.

SEE ALSO

       bobcat(7), log(3bobcat)

BUGS

       None Reported.

BOBCAT PROJECT FILES

       o      https://fbb-git.gitlab.io/bobcat/: gitlab project page;

       o      bobcat_6.04.00-x.dsc: detached signature;

       o      bobcat_6.04.00-x.tar.gz: source archive;

       o      bobcat_6.04.00-x_i386.changes: change log;

       o      libbobcat1_6.04.00-x_*.deb: debian package containing the libraries;

       o      libbobcat1-dev_6.04.00-x_*.deb: debian package containing  the  libraries,  headers
              and manual pages;

BOBCAT

       Bobcat is an acronym of `Brokken’s Own Base Classes And Templates’.

COPYRIGHT

       This  is  free  software,  distributed  under  the terms of the GNU General Public License
       (GPL).

AUTHOR

       Frank B. Brokken (f.b.brokken@rug.nl).