FBB::lm(3bobcat) OFoldStream manipulator FBB::lm(3bobcat)

FBB::lm - Manipulator setting left margins of OFoldStream objects

#include <bobcat/ofoldstream> or
#include <bobcat/ofoldbuf>
Linking option: -lbobcat

The lm class implements a manipulator that can be inserted into OFoldStream objects to set the stream’s left margin to a requested value.

Depending on the tab-setting of the OFoldStream the inserted value represents the number of blank space characters or the number of tab-characters that will be used for the left margin.

The request will be processed at the next newline character or std::flush or std::endl manipulator that is inserted into the stream. If a line is still once an lm object and a flush manipulator are inserted into the stream then the new left margin will be effective at the next word inserted into that line (cf., the example section below).

A bad_cast exception is thrown when the manipulator is inserted into an ostream that is not using a OFoldBuf buffer.

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


lm(size_t newValue):

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

std::ostream &modify(std::ostream &out) const:
This member is normally not directly called from user-programs. Instead, it is called by the insertion operator when inserting the lm manipulator.

#include <iostream>
#include <bobcat/ofoldstream>
using namespace std;
using namespace FBB;
int main()
OFoldStream out(cout, 0, 80);
out << "hello world (left margin is 0)" << lm(4) << "\n"
"this uses a 4 character wide left margin\n" <<
lm(0) << flush << "at column 0 again\n";

bobcat/lm - defines the class interface

bobcat(7), manipulators(3bobcat), mlm(3bobcat), ofoldstream(3bobcat)

None Reported.

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

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

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

2005-2022 libbobcat-dev_6.02.02