outputstreammanip.h

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/*
 | Author: Michael Schmidt;
 |         Gunnar Jehl 
 |
 | ************************* SOFTWARE LICENSE AGREEMENT ***********************
 | This source code is published under the BSD License.
 |
 | See file 'LICENSE.txt' that comes with this distribution or
 | http://dbis.informatik.uni-freiburg.de/index.php?project=GCX/license.php
 | for the full license agreement.
 |
 | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 | AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 | IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 | ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 | LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 | CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 | SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 | INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 | CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 | ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 | POSSIBILITY OF SUCH DAMAGE.
 | ****************************************************************************
*/

#ifndef OUTPUTSTREAMMANIP_H
#define OUTPUTSTREAMMANIP_H

#include "outputstream.h"

class DecIndents {
  public:
  DecIndents(int _n = INDENT_SINGLE):n(_n) {
    } void operator     () (OutputStream & out) const {
        out.decrementIndents(n);
  } private:
    int n;
};

inline DecIndents decrementIndents(int n = INDENT_SINGLE) {
    return DecIndents(n);
}

inline OutputStream & operator<<(OutputStream & out, const DecIndents & dec) {
    dec(out);
    return (out);
}

class IncIndents {
  public:
  IncIndents(int _n = INDENT_SINGLE):n(_n) {
    } void operator     () (OutputStream & out) const {
        out.incrementIndents(n);
  } private:
    int n;
};

inline IncIndents incrementIndents(int n = INDENT_SINGLE) {
    return IncIndents(n);
}

inline OutputStream & operator<<(OutputStream & out, const IncIndents & inc) {
    inc(out);
    return (out);
}

class ResIndents {
  public:
    ResIndents() {
    } void operator     () (OutputStream & out) const {
        out.resetIndents();
}};

inline ResIndents resetIndents() {
    return ResIndents();
}

inline OutputStream & operator<<(OutputStream & out, const ResIndents & res) {
    res(out);
    return (out);
}

class WriIndents {
  public:
    WriIndents() {
    } void operator     () (OutputStream & out) const {
        out.writeIndents();
}};

inline WriIndents writeIndents() {
    return WriIndents();
}

inline OutputStream & operator<<(OutputStream & out, const WriIndents & write) {
    write(out);
    return (out);
}

#endif // OUTPUTSTREAMMANIP_H

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