98 lines
3.0 KiB
C
98 lines
3.0 KiB
C
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/*
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* Copyright 2018 Rockchip Electronics Co. LTD
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* author: martin.cheng@rock-chips.com
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* date: 20181126
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*/
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#ifndef SRC_RT_BASE_INCLUDE_RT_STRING_UTILS_H_
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#define SRC_RT_BASE_INCLUDE_RT_STRING_UTILS_H_
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#include "rt_header.h" // NOLINT
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#include <stdio.h> // NOLINT
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#include <stdarg.h> // NOLINT
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#include <string> // NOLINT
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#include <string.h> // NOLINT strerror/strstr/strcmp
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#ifdef __cplusplus
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extern "C" {
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#endif
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INT32 util_vsnprintf(char* buffer, size_t max_len, const char* format, va_list args);
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INT32 util_snprintf(char* buffer, size_t max_len, const char* format, ...);
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std::string util_vsprintf(const char* format, va_list args);
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std::string util_sprintf(const char* format, ...);
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std::string util_to_string(int num);
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const char* util_to_char(const std::string buf);
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char* util_stristr(const char* str1, const char* str2);
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char* util_strsepstr(const char* str1, const char* str2, const char* delim);
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INT32 util_strcasecmp(const char* str1, const char* str2);
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INT32 util_strncasecmp(const char* str1, const char* str2, size_t n);
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INT32 util_strtolower(char* dst, const char* src, INT32 length);
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INT32 util_strtoupper(char* dst, const char* src, INT32 length);
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INT32 util_strlcpy(char *dst, const char *src, INT32 size);
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INT32 util_strlcat(char *dst, const char *src, INT32 size);
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INT32 util_dump_str(INT32 fd, const char* args);
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/**
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* Locale-independent conversion of ASCII characters to uppercase.
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*/
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static inline const int rt_toupper(int c) {
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if (c >= 'a' && c <= 'z')
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c ^= 0x20;
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return c;
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}
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/**
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* Locale-independent conversion of ASCII characters to lowercase.
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*/
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static inline const int rt_tolower(int c) {
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if (c >= 'A' && c <= 'Z')
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c ^= 0x20;
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return c;
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}
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#define RT_HASH_SEED 131
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constexpr UINT64 func_hash_bkdr_constexpr(const char *str, UINT64 last_value = 0) {
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return *str ? func_hash_bkdr_constexpr(str + 1, last_value * RT_HASH_SEED + *str) : last_value;
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}
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// BKDR Hash Function
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static inline UINT64 func_hash_bkdr(const char *str) {
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UINT32 seed = RT_HASH_SEED; // 31 131 1313 13131 131313 etc..
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UINT64 hash = 0;
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while (*str) {
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hash = hash * RT_HASH_SEED + (*str);
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*str++; // NOLINT
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}
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return hash;
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}
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#define RTSTRING_SWITCH(string) switch (func_hash_bkdr_constexpr(string))
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#define RTSTRING_CASE(string) case func_hash_bkdr_constexpr(string)
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#ifdef __cplusplus
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}
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#endif
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#endif // SRC_RT_BASE_INCLUDE_RT_STRING_UTILS_H_
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