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https://github.com/clearlinux/graphene.git
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Dmitrii Kuvaiskii
bd5d56b1a0
These functions are required by the TOML C source code, which will be embedded into Graphene in a future commit.
25 lines
607 B
C
25 lines
607 B
C
/* SPDX-License-Identifier: MIT */
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/* Adapted from musl v1.2.1. Copyright © 2005-2020 Rich Felker, et al. */
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#include "api.h"
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#define BITOP(a,b,op) \
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((a)[(size_t)(b)/(8*sizeof *(a))] op (size_t)1<<((size_t)(b)%(8*sizeof *(a))))
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size_t strspn(const char* s, const char* c) {
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const char* a = s;
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size_t byteset[32/sizeof(size_t)] = { 0 };
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if (!c[0])
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return 0;
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if (!c[1]) {
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for (; *s == *c; s++);
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return s - a;
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}
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for (; *c && BITOP(byteset, *(unsigned char*)c, |=); c++);
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for (; *s && BITOP(byteset, *(unsigned char*)s, &); s++);
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return s - a;
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}
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