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//===-- wchar utils ---------------------------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_LIBC_SRC_WCHAR_WCHAR_UTILS_H
#define LLVM_LIBC_SRC_WCHAR_WCHAR_UTILS_H
#include "hdr/types/size_t.h"
#include "hdr/types/wchar_t.h"
#include "src/__support/common.h"
#include "src/__support/macros/attributes.h" // LIBC_INLINE
namespace LIBC_NAMESPACE_DECL {
namespace internal {
// returns true if the character exists in the string
LIBC_INLINE static bool wcschr(wchar_t c, const wchar_t *str) {
for (int n = 0; str[n]; ++n) {
if (str[n] == c)
return true;
}
return false;
}
// bool should be true for wcscspn for complimentary span
// should be false for wcsspn since we want it to span
LIBC_INLINE static size_t wcsspn(const wchar_t *s1, const wchar_t *s2,
bool not_match_set) {
size_t i = 0;
for (; s1[i]; ++i) {
bool in_set = wcschr(s1[i], s2);
if (in_set == not_match_set)
return i;
}
return i;
}
} // namespace internal
} // namespace LIBC_NAMESPACE_DECL
#endif // LLVM_LIBC_SRC_WCHAR_WCHAR_UTILS_H
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