FBB::level(3bobcat)

Log-manipulator
(libbobcat-dev_6.02.02)

2005-2022

NAME

SYNOPSIS

DESCRIPTION

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

INHERITS FROM

CONSTRUCTORS

• 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

• 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 <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";
}

FILES

SEE ALSO

BUGS

BOBCAT PROJECT FILES

• https://fbb-git.gitlab.io/bobcat/: gitlab project page;
• bobcat_6.02.02-x.dsc: detached signature;
• bobcat_6.02.02-x.tar.gz: source archive;
• bobcat_6.02.02-x_i386.changes: change log;
• libbobcat1_6.02.02-x_*.deb: debian package containing the libraries;
• libbobcat1-dev_6.02.02-x_*.deb: debian package containing the libraries, headers and manual pages;

BOBCAT

COPYRIGHT

AUTHOR