From 6a27a2a4032e88fa9154ef0f0741edc584f7a701 Mon Sep 17 00:00:00 2001 From: Dominick Allen Date: Sun, 20 Oct 2024 10:48:19 -0500 Subject: Lots of work. --- include/fud_c_string.hpp | 55 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 55 insertions(+) create mode 100644 include/fud_c_string.hpp (limited to 'include/fud_c_string.hpp') diff --git a/include/fud_c_string.hpp b/include/fud_c_string.hpp new file mode 100644 index 0000000..44e0dc8 --- /dev/null +++ b/include/fud_c_string.hpp @@ -0,0 +1,55 @@ +/* + * libfud + * Copyright 2024 Dominick Allen + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#ifndef FUD_C_STRING_HPP +#define FUD_C_STRING_HPP + +#include +#include +#include + + +namespace fud { + +constexpr ssize_t cStringLength(const char* str, size_t maxLength) +{ + if (str == nullptr || maxLength > (SSIZE_MAX - 1)) { + return -1; + } + + ssize_t size = 0; + + while (str[size] != 0 && static_cast(size) < maxLength) { + size++; + } + + if (str[size] != 0 && static_cast(size) == maxLength) { + return static_cast(maxLength) + 1; + } + + return size; +} + +constexpr ssize_t cStringLength(const char* str) +{ + constexpr auto maxLength = SSIZE_MAX - 1; + return cStringLength(str, maxLength); +} + +} // namespace fud + +#endif -- cgit v1.2.3