lib/output/file.cc

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//
// nis-util - NIS Administration Utilities
// Copyright (C) 2012 Peter Miller
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or (at
// your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this program. If not, see <http://www.gnu.org/licenses/>.
//

#include <lib/ac/assert.h>
#include <libexplain/fclose.h>
#include <libexplain/fflush.h>
#include <libexplain/fopen.h>
#include <libexplain/putc.h>

#include <lib/output/file.h>


output_file::~output_file()
{
    assert(fp);
    if (fp == stdout)
        explain_fflush_or_die(fp);
    else
        explain_fclose_or_die(fp);
    fp = 0;
}


static bool
isdflt(const rcstring &filename)
{
    return (filename.empty() || filename == "-");
}


output_file::output_file(const rcstring &filename) :
    fp(isdflt(filename) ? stdout : explain_fopen_or_die(filename.c_str(), "w")),
    column(0)
{
}


output_file::pointer
output_file::create(const rcstring &filename)
{
    return pointer(new output_file(filename));
}


void
output_file::put(char c)
{
    explain_putc_or_die(c, fp);
    switch (c)
    {
    case '\n':
        column = 0;
        break;

    case '\t':
        column = (column + 8) & ~7;
        break;

    default:
        ++column;
        break;
    }
}


int
output_file::get_column(void)
    const
{
    return column;
}


int
output_file::get_line_width(void)
    const
{
    return 80;
}


// vim: set ts=8 sw=4 et :