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Werner Koch 1997-11-18 14:06:00 +00:00
parent ada086d0ce
commit 5393dd53c5
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g10/overwrite.c Normal file
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/* overwrite.c
* Copyright (c) 1997 by Werner Koch (dd9jn)
*
* This file is part of G10.
*
* G10 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.
*
* G10 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include <unistd.h>
#include "util.h"
#include "memory.h"
#include "ttyio.h"
#include "options.h"
#include "main.h"
/****************
* Check wether FNAME exists and ask if it's okay to overwrite an
* existing one.
* Returns: -1 : Do not overwrite
* 0 : it's okay to overwrite or the file does not exist
* >0 : other error
*/
int
overwrite_filep( const char *fname )
{
if( !access( fname, F_OK ) ) {
char *p;
int okay;
int first = 1;
if( opt.answer_yes )
okay = 1;
else if( opt.answer_no || opt.batch )
okay = 2;
else
okay = 0;
while( !okay ) {
if( !okay )
if( first ) {
tty_printf("File '%s' exists. ", fname);
first = 0;
}
p = tty_get("Overwrite (y/N)? ");
tty_kill_prompt();
if( (*p == 'y' || *p == 'Y') && !p[1] )
okay = 1;
else if( !*p || ((*p == 'n' || *p == 'N') && !p[1]) )
okay = 2;
else
okay = 0;
m_free(p);
}
if( okay == 2 )
return -1;
/* fixme: add some backup stuff */
}
return 0;
}