87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
/*-
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* Copyright (c) 2008-2015 Juan Romero Pardines.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <stdio.h>
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#include <stdbool.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <string.h>
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#include <strings.h>
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#include <ctype.h>
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#include "defs.h"
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#ifdef __clang__
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#pragma clang diagnostic ignored "-Wformat-nonliteral"
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#endif
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static bool
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question(bool preset, const char *fmt, va_list ap)
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{
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int response;
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vfprintf(stderr, fmt, ap);
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if(preset)
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fputs(" [Y/n] ", stderr);
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else
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fputs(" [y/N] ", stderr);
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if ((response = fgetc(stdin)) != EOF) {
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if (response == '\n')
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return preset;
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if (response == 'y' || response == 'Y')
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return true;
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if (response == 'n' || response == 'N')
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return false;
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}
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return false;
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}
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bool
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yesno(const char *fmt, ...)
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{
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va_list ap;
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bool res;
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va_start(ap, fmt);
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res = question(1, fmt, ap);
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va_end(ap);
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return res;
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}
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bool
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noyes(const char *fmt, ...)
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{
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va_list ap;
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bool res;
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va_start(ap, fmt);
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res = question(0, fmt, ap);
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va_end(ap);
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return res;
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}
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