M5Stack_Linux_Libs/components/utilities/include/run_util.hpp

/*
 * SPDX-FileCopyrightText: 2024 M5Stack Technology CO LTD
 *
 * SPDX-License-Identifier: MIT
 */
#ifndef _RUN_UTIL_H_
#define _RUN_UTIL_H_
#include <string>
#include <vector>
#include <fstream>
#include <cstdint>
namespace dutilities {

std::string formatString(const char* fmt, ...)
{
    va_list args;
    va_start(args, fmt);
    size_t sz = vsnprintf(nullptr, 0U, fmt, args);  // calculate length
    va_end(args);
    char buf[sz + 1];
    va_start(args, fmt);  // Reinitiaize args (args cannot reuse because
                          // indefinite value after vsnprintf)
    vsnprintf(buf, sizeof(buf), fmt, args);
    va_end(args);
    // String don't has constructor(const char*, const size_t);
    buf[sz] = '\0';
    return std::string(buf);
}

std::vector<std::string> split_string(const std::string& content, const std::string& delimiter)
{
    std::vector<std::string> result;
    std::string::size_type pos1 = 0;
    std::string::size_type pos2 = content.find(delimiter);
    while (std::string::npos != pos2) {
        result.push_back(content.substr(pos1, pos2 - pos1));
        pos1 = pos2 + delimiter.size();
        pos2 = content.find(delimiter, pos1);
    }
    if (pos1 != content.length()) {
        result.push_back(content.substr(pos1));
    }
    return result;
}

std::vector<std::string> split_each_utf8_char(const std::string& text)
{
    std::vector<std::string> words;
    std::string input(text);
    int len = input.length();
    int i   = 0;
    while (i < len) {
        int next = 1;
        if ((input[i] & 0x80) == 0x00) {
        } else if ((input[i] & 0xE0) == 0xC0) {
            next = 2;
        } else if ((input[i] & 0xF0) == 0xE0) {
            next = 3;
        } else if ((input[i] & 0xF8) == 0xF0) {
            next = 4;
        }
        words.push_back(input.substr(i, next));
        i += next;
    }
    return words;
}

bool file_exist(const std::string& path)
{
    auto flag = false;
    std::fstream fs(path, std::ios::in | std::ios::binary);
    flag = fs.is_open();
    fs.close();
    return flag;
}

template <typename T>
bool read_file(const std::string& path, T& data)
{
    FILE* file = fopen(path.c_str(), "rb");
    if (file == nullptr) {
        return false;
    }
    if (fseek(file, 0, SEEK_END) != 0) {
        fclose(file);
        return false;
    }
    long size = ftell(file);
    if (size < 0) {
        fclose(file);
        return false;
    }
    rewind(file);
    try {
        data.resize(size);
    } catch (const std::bad_alloc&) {
        fclose(file);
        return false;
    }
    size_t read_size = fread(data.data(), 1, size, file);
    fclose(file);
    return read_size == static_cast<size_t>(size);
}

template <typename T>
bool dump_file(const std::string& path, const T& data)
{
    FILE* file = fopen(path.c_str(), "wb");
    fwrite((void*)data.data(), 1, data.size(), file);
    fclose(file);
    return true;
}

bool dump_file(const std::string& path, char* data, int size)
{
    FILE* file = fopen(path.c_str(), "wb");
    fwrite(data, 1, size, file);
    fclose(file);
    return true;
}
};  // namespace dutilities
#endif /* _STRING_UTIL_H_ */