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/* nbdkit
* Copyright Red Hat
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* * Neither the name of Red Hat nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY RED HAT AND CONTRIBUTORS ''AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
* PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL RED HAT OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef NBDKIT_PARSE_BOOL_H
#define NBDKIT_PARSE_BOOL_H
#include <string.h>
#include "ascii-string.h"
/* Parse a boolean-like string. Returns:
* 1 => string is true
* 0 => string is false
* -1 => string could not be parsed as a boolean
*/
static inline int
parse_bool (const char *str)
{
if (!strcmp (str, "1") ||
!ascii_strcasecmp (str, "true") ||
!ascii_strcasecmp (str, "t") ||
!ascii_strcasecmp (str, "yes") ||
!ascii_strcasecmp (str, "y") ||
!ascii_strcasecmp (str, "on"))
return 1;
if (!strcmp (str, "0") ||
!ascii_strcasecmp (str, "false") ||
!ascii_strcasecmp (str, "f") ||
!ascii_strcasecmp (str, "no") ||
!ascii_strcasecmp (str, "n") ||
!ascii_strcasecmp (str, "off"))
return 0;
return -1;
}
#endif /* NBDKIT_PARSE_BOOL_H */
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