0dcdc0347c
Add strlen() and strnlen() to commonlib/bsd by rewriting them from scratch, and remove the same functions from coreboot and libpayload. Note that in the existing libpayload implementation, these functions return 0 for NULL strings. Given that POSIX doesn't require the NULL check and that other major libc implementations (e.g. glibc [1]) don't seem to do that, the new functions also don't perform the NULL check. [1] https://github.com/bminor/glibc/blob/master/sysdeps/i386/strlen.c Change-Id: I1203ec9affabe493bd14b46662d212b08240cced Signed-off-by: Yu-Ping Wu <yupingso@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/83830 Reviewed-by: Maximilian Brune <maximilian.brune@9elements.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Julius Werner <jwerner@chromium.org>
35 lines
583 B
C
35 lines
583 B
C
/* SPDX-License-Identifier: BSD-3-Clause */
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#include <commonlib/bsd/string.h>
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#include <ctype.h>
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#include <stddef.h>
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size_t strlen(const char *str)
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{
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const char *ptr = str;
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while (*ptr++)
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;
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return ptr - str - 1;
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}
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size_t strnlen(const char *str, size_t maxlen)
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{
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const char *ptr = str;
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const char *end = str + maxlen + 1;
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while (*ptr++ && ptr < end)
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;
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return ptr - str - 1;
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}
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unsigned int skip_atoi(char **ptr)
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{
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unsigned int result = 0;
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char *str;
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for (str = *ptr; isdigit(str[0]); str++)
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result = result * 10 + (str[0] - '0');
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*ptr = str;
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return result;
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}
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