110 lines
2.5 KiB
C
110 lines
2.5 KiB
C
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/*-
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* Copyright (c) 2008-2010 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 <ctype.h>
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#include "defs.h"
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static char *
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strtrim(char *str)
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{
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char *pch = str;
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if (str == NULL || *str == '\0')
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return str;
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while (isspace((unsigned char)*pch))
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pch++;
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if (pch != str)
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memmove(str, pch, (strlen(pch) + 1));
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if (*str == '\0')
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return str;
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pch = (str + (strlen(str) - 1));
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while (isspace((unsigned char)*pch))
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pch--;
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*++pch = '\0';
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return str;
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}
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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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char response[32];
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vfprintf(stderr, fmt, ap);
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if (preset)
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fprintf(stderr, " %s ", "[YES/no]");
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else
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fprintf(stderr, " %s ", "[yes/NO]");
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if (fgets(response, 32, stdin)) {
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(void)strtrim(response);
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if (strlen(response) == 0)
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return preset;
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if (strcasecmp(response, "yes") == 0)
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return true;
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else if (strcasecmp(response, "no") == 0)
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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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xbps_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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xbps_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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