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std::string_view 的使用

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种太阳的热带美短
2026-06-29 09:40:55 +08:00
parent cd446b7ca8
commit 8daf67aa5d
52 changed files with 1420 additions and 1367 deletions
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module/dll_source_lzy/ecap/lib/hulc/Bit.cpp
+8 -7
View File
@@ -4,6 +4,7 @@
#include <regex>
#include <sstream>
#include <stdexcept>
#include <string_view>
// 2025-01-02 05:01:50 [info] 1a480118 9607f81e f020 3a24 67761dbd 1a9ecbf8
// 5655c75b 00601307
#include <algorithm>
@@ -95,8 +96,8 @@ const bool is_big_endian = []() {
auto *p = reinterpret_cast<uint8_t *>(&x);
return p[0] == 0x01; // 如果 p[0] 为 0x01，说明是大端字节序
}();
std::vector<std::string> split(const std::string &str,
const std::string &delimiter) {
std::vector<std::string> split(std::string_view str,
std::string_view delimiter) {
std::vector<std::string> tokens;
size_t start = 0;
size_t end = str.find(delimiter);
@@ -110,7 +111,7 @@ std::vector<std::string> split(const std::string &str,
tokens.push_back(str.substr(start)); // Add the last token
return tokens;
}
std::string bin2mem(const std::string &bin) {
std::string bin2mem(std::string_view bin) {
const size_t len = bin.size();
if (len % 8 != 0) {
throw std::invalid_argument("binary string length must be a multiple of 8");
@@ -395,7 +396,7 @@ TEST(Bi222, xor_hex_Ex) {
#endif
// 将字节序从大端转换到当前平台字节序，并复制到目标内存中
void big_endian_2_platform(const std::string &big_endian, char *dest) {
void big_endian_2_platform(std::string_view big_endian, char *dest) {
// 先复制原始数据
std::string result = big_endian;
// 如果当前平台是小端，反转数据
@@ -405,14 +406,14 @@ void big_endian_2_platform(const std::string &big_endian, char *dest) {
// 将转换后的数据拷贝到目标内存中
std::memcpy(dest, result.data(), result.size());
}
std::string big_endian_2_platform(const std::string &big_endian) {
std::string big_endian_2_platform(std::string_view big_endian) {
std::string result;
result.resize(big_endian.size());
big_endian_2_platform(big_endian, result.data());
return result;
}
// 将字节序从小端转换到当前平台字节序，并复制到目标内存中
void little_endian_2_platform(const std::string &little_endian, char *dest) {
void little_endian_2_platform(std::string_view little_endian, char *dest) {
// 先复制原始数据
std::string result = little_endian;
// 如果当前平台是大端，反转数据
@@ -422,7 +423,7 @@ void little_endian_2_platform(const std::string &little_endian, char *dest) {
// 将转换后的数据拷贝到目标内存中
std::memcpy(dest, result.data(), result.size());
}
std::string little_endian_2_platform(const std::string &little_endian) {
std::string little_endian_2_platform(std::string_view little_endian) {
std::string result;
result.resize(little_endian.size());
big_endian_2_platform(little_endian, result.data());
module/dll_source_lzy/ecap/lib/hulc/Bit.h
+11 -10
View File
@@ -1,6 +1,7 @@
#ifndef BitSet_H
#define BitSet_H
#include <bitset>
#include <string_view>
#ifdef __linux__
#include <cstring>
#endif
@@ -70,11 +71,11 @@ extern const bool is_big_endian;
void big_endian_2_platform(void *dest, const char *d, size_t size);
void little_endian_2_platform(void *dest, const char *d, size_t size);
void big_endian_2_platform(const std::string &big_endian, char *dest);
void little_endian_2_platform(const std::string &little_endian, char *dest);
void big_endian_2_platform(std::string_view big_endian, char *dest);
void little_endian_2_platform(std::string_view little_endian, char *dest);
std::string big_endian_2_platform(const std::string &big_endian);
std::string little_endian_2_platform(const std::string &little_endian);
std::string big_endian_2_platform(std::string_view big_endian);
std::string little_endian_2_platform(std::string_view little_endian);
std::string platform_2_big_endian(void *memory, int size);
std::string platform_2_little_endian(void *memory, int size);
@@ -180,7 +181,7 @@ void mem2hex_Ex2(void *dest, void *mem, size_t num, bool uppercase,
const char *middle,
size_t middle_len = std::numeric_limits<size_t>::max());
Base STR_Type mem2hex(const STR_Type &mem, bool uppercase = true,
const std::string &middle = "",
std::string_view middle = "",
std::pmr::memory_resource *resource = nullptr) {
auto size = cacl_type<STR_Type>::size(mem);
auto ret =
@@ -209,7 +210,7 @@ template <int start, int len, typename Enum> Enum get_bin(std::string &msg) {
return static_cast<Enum>(
std::bitset<len>(msg.substr(start, len)).to_ullong());
}
template <int start, int len> int get_bin(const std::string &msg) {
template <int start, int len> int get_bin(std::string_view msg) {
return std::bitset<len>(msg.substr(start, len)).to_ullong();
}
template <int start, int len>
@@ -217,7 +218,7 @@ void set_bin(std::string &msg, unsigned long long n) {
msg.replace(start, len, std::bitset<len>(n).to_string());
}
template <int start, int len>
void set_bin(std::string &msg, const std::string &value) {
void set_bin(std::string &msg, std::string_view value) {
if (value.size() != len) {
std::cout << "len == " << len << " bits.size() == " << value.size()
<< std::endl;
@@ -231,13 +232,13 @@ template <int len> std::string to_bin(unsigned long long n) {
template <int num> std::string to_bin(double n) {
return std::bitset<num>(static_cast<unsigned long long>(n)).to_string();
}
template <typename T> T bin2(const std::string &binstr) {
template <typename T> T bin2(std::string_view binstr) {
return std::stoull(binstr, nullptr, 2);
}
template <typename T> unsigned long long hex2(const std::string &hexstr) {
template <typename T> unsigned long long hex2(std::string_view hexstr) {
return std::stoull(hexstr, nullptr, 16);
}
template <> inline int bin2<int>(const std::string &binstr) {
template <> inline int bin2<int>(std::string_view binstr) {
int bit_limit = sizeof(int) * 8;
if (binstr.size() > bit_limit) {
std::cout << "Bitset.h inline int bin2<int> error! Binary string exceeds "
module/dll_source_lzy/ecap/lib/hulc/DataOutputFormats.cpp
+5 -4
View File
@@ -2,6 +2,7 @@
#include <cassert>
#include <chrono>
#include <string_view>
using namespace yC;
@@ -22,7 +23,7 @@ MLAT_timestamp::MLAT_timestamp() {
parse_hhmmss();
}
MLAT_timestamp::MLAT_timestamp(const std::string &memory_6) : memory(memory_6) {
MLAT_timestamp::MLAT_timestamp(std::string_view memory_6) : memory(memory_6) {
assert(memory_6.size() == 6);
auto msg_bin = hex2bin(mem2hex(memory));
daysec = std::bitset<18>(msg_bin.substr(0, 18)).to_ulong();
@@ -55,7 +56,7 @@ void MLAT_timestamp::parse_hhmmss() {
mm = (daysec / 60) % 60;
ss = daysec % 60;
}
std::string packet_to_escape_format(std::string t) {
std::string packet_to_escape_format(std::string_view t) {
std::string result = "\x1a";
for (size_t i = 1; i < t.size(); ++i) {
result.push_back(t[i]); // 插入当前字符
@@ -66,7 +67,7 @@ std::string packet_to_escape_format(std::string t) {
return result;
}
void Binary_Format_handle_buffer(
std::string &buffer, const std::string &data,
std::string &buffer, std::string_view data,
const std::function<void(std::string &)> &callback) {
size_t i = 0;
while (i < data.size()) {
@@ -99,7 +100,7 @@ void Binary_Format_handle_buffer(
// 9 + 7
// 9 + 14
std::string mode_s_msg_packet_to_server_packet(std::uint32_t id,
std::string packet) {
std::string_view packet) {
std::string id_code = yC::platform_2_big_endian((char *)&id, sizeof(id));
// assert(id_code.size() == 4, "id.size != 4");
packet.insert(1, id_code.c_str(), 4);
module/dll_source_lzy/ecap/lib/hulc/DataOutputFormats.h
+16 -15
View File
@@ -1,13 +1,14 @@
#ifndef DATAOUTPUTFORMATS_H
#define DATAOUTPUTFORMATS_H
#include "base_format.h"
#include <string_view>
using namespace yC;
// AVR format
// *02E99619FACDAE;
// *8D3C5EE69901BD9540078D37335F;
// *7700;
inline std::string create_AVR_format(const std::string &msg_hex) {
inline std::string create_AVR_format(std::string_view msg_hex) {
return "*" + msg_hex + ";";
}
@@ -16,7 +17,7 @@ inline std::string create_AVR_format(const std::string &msg_hex) {
// @016CE3671C747700;
// @5500068BA46CB402c18d34fc8000;
inline std::string create_MLAT_AVR_format(const std::string &msg_hex,
inline std::string create_MLAT_AVR_format(std::string_view msg_hex,
MLAT_timestamp *timestamp) {
// std::string signal_level_str =
// bin2hex(std::bitset<8>(signal_level).to_string()); std::cout << "signal:"
@@ -32,7 +33,7 @@ inline std::string create_MLAT_AVR_format(const std::string &msg_hex,
// configuration settings, time stamp error ticks as int8_t (1 tick is 15ns)
// (message "4" not on Mode-S Beast classic) <esc><esc>: true 0x1a <esc> is
// 0x1a, and "1", "2" and "3" are 0x31, 0x32 and 0x33
inline std::string create_Binary_Format_memory(const std::string &msg_hex,
inline std::string create_Binary_Format_memory(std::string_view msg_hex,
char signal_level,
MLAT_timestamp *timestamp) {
std::string type;
@@ -72,9 +73,9 @@ inline std::string create_Binary_Format_memory(const std::string &msg_hex,
}
// 把要传递的信息转化成转义字符 二进制==>转义二进制
std::string packet_to_escape_format(std::string t);
std::string packet_to_escape_format(std::string_view t);
inline std::string unescape_packet(std::string t) {
inline std::string unescape_packet(std::string_view t) {
std::string result;
for (size_t i = 0; i < t.size(); ++i) {
if (t[i] == '\x1a' && i + 1 < t.size() && t[i + 1] == '\x1a') {
@@ -117,7 +118,7 @@ inline std::string create_Binary_Format_4(MLAT_timestamp timestamp,
struct TCXO_Clock {
unsigned long long times;
explicit TCXO_Clock(const std::string &hex) {
explicit TCXO_Clock(std::string_view hex) {
times = std::bitset<48>(hex2bin(hex)).to_ullong();
}
@@ -325,7 +326,7 @@ struct HULC_Status_Message : HULC_Message {
return ret;
}
static double decodeLatitudeFromBAM(const std::string &bigdian4) {
static double decodeLatitudeFromBAM(std::string_view bigdian4) {
std::uint32_t value;
yC::big_endian_2_platform(bigdian4, (char *)&value);
// BAM 格式解码公式
@@ -349,18 +350,18 @@ struct HULC_Status_Message : HULC_Message {
}
};
static void hulc_big_endian_set(const std::string &msg, void *field, int start,
static void hulc_big_endian_set(std::string_view msg, void *field, int start,
int len) {
auto str = msg.substr(start, len);
yC::big_endian_2_platform(str, (char *)field);
}
static void hulc_set2(const std::string &msg, void *field, int start, int len) {
static void hulc_set2(std::string_view msg, void *field, int start, int len) {
auto it = msg.substr(start, len);
std::memcpy(field, it.data(), len);
}
// msg 是文本二进制字符串 转义后的 1a34
static HULC_Status_Message create_HULC_Status_Message(const std::string &msg) {
static HULC_Status_Message create_HULC_Status_Message(std::string_view msg) {
HULC_Status_Message ret{};
hulc_big_endian_set(msg, &ret.SerNum, 4, 4);
hulc_big_endian_set(msg, &ret.Flags, 8, 2);
@@ -380,9 +381,9 @@ struct HULC_Reply_to_command : HULC_Message {
};
// 0x1A 0x48 0x01 0x18 SerNum Flags I.U. xTime Lat Lon Alt Sat HDOP
inline std::uint8_t get_id(const std::string &msg) { return msg[2]; }
inline std::uint8_t get_id(std::string_view msg) { return msg[2]; }
inline std::uint8_t get_len(const std::string &msg) { return msg[3]; }
inline std::uint8_t get_len(std::string_view msg) { return msg[3]; }
// Type Payload Size Description
// 0x31 4 bytes Mode-A/C raw data
@@ -400,7 +401,7 @@ inline std::uint8_t get_len(const std::string &msg) { return msg[3]; }
// During Transmission: 1A 32 27 1A 1A E8 57 F0 1A 1A 6C
// After Un-Escaping: 1A 32 27 1A E8 57 F0 1A 6C
void Binary_Format_handle_buffer(
std::string &buffer, const std::string &data,
std::string &buffer, std::string_view data,
const std::function<void(std::string &)> &callback);
/* Command Message (Host ==> Device)
The command-message has a simple ASCII based structure. Each message starts with
@@ -414,7 +415,7 @@ in the respective protocol section.
*/
std::string mode_s_msg_packet_to_server_packet(std::uint32_t id,
std::string packet);
std::string_view packet);
// 1a34 radarcape 状态帧消息
// https://wiki.jetvision.de/wiki/Radarcape:Version_History#Status_Frame_0x34_contents_were_extended_with_GPS_and_UTC_information
@@ -532,7 +533,7 @@ struct Radarcape_STATUS_Message {
// 消息5字节
//
static Radarcape_STATUS_Message
create_Radarcape_STATUS_Message(const std::string &msg_5) {
create_Radarcape_STATUS_Message(std::string_view msg_5) {
std::string msg = yC::big_endian_2_platform(msg_5.substr(2));
Radarcape_STATUS_Message ret{};
std::memcpy(&ret, (void *)(msg.data()), 3);
module/dll_source_lzy/ecap/lib/hulc/base_format.h
+2 -1
View File
@@ -22,11 +22,12 @@
#include <unordered_map>
#include <utility>
#include <vector>
#include <string_view>
// 1纳秒是 10 -9次方秒
struct MLAT_timestamp {
explicit MLAT_timestamp();
explicit MLAT_timestamp(const std::string &memory_6);
explicit MLAT_timestamp(std::string_view memory_6);
MLAT_timestamp(std::uint32_t daysec, std::uint32_t nanosec);
std::uint32_t daysec{}; // 当天的秒数 高18位
std::uint32_t nanosec{}; // 当天的纳秒数 低30位
module/dll_source_lzy/ecap/lib/hulc/magic_enum/export.h
+4 -3
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@@ -3,8 +3,9 @@
#include "magic_enum/magic_enum.hpp"
#include <iostream>
#include <sstream>
#include <string_view>
template <typename EnumType> EnumType to_enum(const std::string &str) {
template <typename EnumType> EnumType to_enum(std::string_view str) {
auto opt = magic_enum::enum_cast<EnumType>(str);
if (opt.has_value()) {
return opt.value(); // 返回枚举值
@@ -15,7 +16,7 @@ template <typename EnumType> EnumType to_enum(const std::string &str) {
}
template <typename EnumType>
std::optional<EnumType> to_enum2(const std::string &str) {
std::optional<EnumType> to_enum2(std::string_view str) {
auto opt = magic_enum::enum_cast<EnumType>(str);
if (opt.has_value()) {
return opt.value(); // 返回枚举值
@@ -65,7 +66,7 @@ template <typename Enum> std::vector<Enum> split_flags(Enum flags) {
inline std::string to_string(const char *val) { return std::string(val); }
template <> inline std::string to_string(std::string val) { return val; }
template <> inline std::string to_string(std::string_view val) { return val; }
template <> inline std::string to_string(bool val) {
return val ? "true" : "false";
}
module/dll_source_lzy/ecap/lib/hulc/magic_enum/magic_enum/magic_enum_format.hpp
+1
View File
@@ -34,6 +34,7 @@
#include "magic_enum.hpp"
#include "magic_enum_flags.hpp"
#include <string_view>
#if !defined(MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT)
#define MAGIC_ENUM_DEFAULT_ENABLE_ENUM_FORMAT 1