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/* title.c - fprintf that underlines
Copyright 1988-2017 Free Software Foundation, Inc.
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 3, 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, write to the Free Software
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA
02110-1301, USA. */
/*
* Note:
* very strong inspiration was taken in error.[ch] by
* David MacKenzie <djm@gnu.ai.mit.edu>
*/
/* Get prototypes for the functions defined here. */
#include <config.h>
#include <stdio.h>
#include <string.h>
#include <stdarg.h>
#include "title.h"
#include "printlen.h"
/* Print the message FORMAT, which is a printf-style
format string*/
void
title (FILE * stream, char c, int center_p, const char *format, ...)
{
int len;
int padding;
va_list args;
va_start (args, format);
len = vprintflen (format, args);
va_end (args);
if (format [strlen (format) - 1] == '\n')
len --;
if (center_p)
for (padding = 0 ; padding < 79 - len ; padding += 2)
putc (' ', stream);
va_start (args, format);
vfprintf (stream, format, args);
va_end (args);
/* We suppose that \n can only be met at the end of format, not
* of one of its arguments */
if (format [strlen (format) - 1] != '\n')
putc ('\n', stream);
/* Draw the line */
if (center_p)
for (padding = 0 ; padding < 79 - len ; padding += 2)
putc (' ', stream);
for (/* nothing */ ; len ; len --)
putc (c, stream);
putc ('\n', stream);
fflush (stream);
}
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