f2b240595b
It's like strtou_(), but rejects negative input, instead of silently converting it to unsigned. Link: <https://softwareengineering.stackexchange.com/a/449060/332848> Signed-off-by: Alejandro Colomar <alx@kernel.org>
69 lines
1.5 KiB
C
69 lines
1.5 KiB
C
// SPDX-FileCopyrightText: 2023, Alejandro Colomar <alx@kernel.org>
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// SPDX-License-Identifier: BSD-3-Clause
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#ifndef SHADOW_INCLUDE_LIB_ATOI_STRTOU_NONEG_H_
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#define SHADOW_INCLUDE_LIB_ATOI_STRTOU_NONEG_H_
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#include <config.h>
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#include <errno.h>
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#include <stdint.h>
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#include <stdlib.h>
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#include "atoi/strtoi.h"
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#include "attr.h"
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ATTR_STRING(1) ATTR_ACCESS(write_only, 2) ATTR_ACCESS(write_only, 6)
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inline uintmax_t strtou_noneg(const char *s, char **restrict endp,
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int base, uintmax_t min, uintmax_t max, int *restrict status);
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ATTR_STRING(1) ATTR_ACCESS(write_only, 2)
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inline unsigned long strtoul_noneg(const char *s,
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char **restrict endp, int base);
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ATTR_STRING(1) ATTR_ACCESS(write_only, 2)
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inline unsigned long long strtoull_noneg(const char *s,
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char **restrict endp, int base);
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inline uintmax_t
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strtou_noneg(const char *s, char **restrict endp, int base,
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uintmax_t min, uintmax_t max, int *restrict status)
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{
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int st;
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if (status == NULL)
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status = &st;
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if (strtoi_(s, endp, base, 0, 1, status) == 0 && *status == ERANGE)
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return min;
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return strtou_(s, endp, base, min, max, status);
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}
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inline unsigned long
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strtoul_noneg(const char *s, char **restrict endp, int base)
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{
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if (strtol(s, endp, base) < 0) {
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errno = ERANGE;
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return 0;
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}
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return strtoul(s, endp, base);
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}
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inline unsigned long long
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strtoull_noneg(const char *s, char **restrict endp, int base)
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{
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if (strtol(s, endp, base) < 0) {
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errno = ERANGE;
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return 0;
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}
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return strtoull(s, endp, base);
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}
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#endif // include guard
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