文章目录
😏1. 项目介绍
项目Github地址：https://github.com/jmcnamara/libxlsxwriter
Wiki地址：https://libxlsxwriter.github.io/
libxlsxwriter 是一个用于创建 Microsoft Excel XLSX 文件的C库。它提供了一系列功能，可以让您通过编程方式生成包含单元格、图表、格式化等内容的 Excel 文件。下面是 libxlsxwriter 的一些特点和功能：
但是要注意，libxlsxwriter 只能用于创建 XLSX 文件，不支持读取或修改现有的 Excel 文件。（可以通过c++自带的文件处理来读取，处理后的数据再手动导入到最后的表中）
😊2. 环境配置
下面进行环境配置：
# 安装依赖
sudo apt-get install libxslt-dev
# 下载源码
git clone https://github.com/jmcnamara/libxlsxwriter
# 编译
cd libxlsxwriter
make
sudo cp lib/libxlsxwriter.so.5 /usr/lib/libxlsxwriter.so.5
cd cmake
cmake ..
make
sudo make install
编译运行：
g++ -o main main.cpp -lxlsxwriter && ./main
😆3. 使用说明
下面进行使用分析：
创建excel并写入示例：
#include "xlsxwriter.h"
int main() {
/* Create a new workbook and add a worksheet. */
lxw_workbook *workbook = workbook_new("demo.xlsx");
lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
/* Add a format. */
lxw_format *format = workbook_add_format(workbook);
/* Set the bold property for the format */
format_set_bold(format);
/* Change the column width for clarity. */
worksheet_set_column(worksheet, 0, 0, 20, NULL);
/* Write some simple text. */
worksheet_write_string(worksheet, 0, 0, "Hello", NULL);
/* Text with formatting. */
worksheet_write_string(worksheet, 1, 0, "World", format);
/* Write some numbers. */
worksheet_write_number(worksheet, 2, 0, 123, NULL);
worksheet_write_number(worksheet, 3, 0, 123.456, NULL);
/* Insert an image. */
worksheet_insert_image(worksheet, 1, 2, "logo.png");
workbook_close(workbook);
return 0;
}
参考某博主，生成指定个数的uuid示例：
#include <chrono>
#include <condition_variable>
#include <ctime>
#include <curl/curl.h>
#include <curl/easy.h>
#include <fstream>
#include <functional>
#include <future>
#include <iostream>
#include <iomanip>
#include <map>
#include <memory>
#include <mutex>
#include <random>
#include <stdio.h>
#include <string>
#include <uuid/uuid.h>
#include <vector>
#include "xlsxwriter.h"
// ref: https://www.cnblogs.com/Fred1987/p/17442487.html
// 编译： g++ -o main main.cpp -lxlsxwriter -luuid -lpthread && ./main
std::string get_time_now(bool is_exact = false)
{
std::chrono::time_point<std::chrono::high_resolution_clock> now = std::chrono::high_resolution_clock::now();
time_t raw_time = std::chrono::high_resolution_clock::to_time_t(now);
struct tm tm_info = *localtime(&raw_time);
std::stringstream ss;
ss << std::put_time(&tm_info, "%Y%m%d%H%M%S");
if (is_exact)
{
std::chrono::seconds seconds = std::chrono::duration_cast<std::chrono::seconds>(now.time_since_epoch());
std::chrono::milliseconds mills = std::chrono::duration_cast<std::chrono::milliseconds>(now.time_since_epoch());
std::chrono::microseconds micros = std::chrono::duration_cast<std::chrono::microseconds>(now.time_since_epoch());
std::chrono::nanoseconds nanos = std::chrono::duration_cast<std::chrono::nanoseconds>(now.time_since_epoch());
std::uint64_t mills_count = mills.count() - seconds.count() * 1000;
std::uint64_t micros_count = micros.count() - mills.count() * 1000;
std::uint64_t nanos_count = nanos.count() - micros.count() * 1000;
ss << "_" << std::setw(3) << std::setfill('0') << std::to_string(mills_count)
<< std::setw(3) << std::setfill('0') << std::to_string(micros_count)
<< std::setw(3) << std::setfill('0') << std::to_string(nanos_count);
}
return ss.str();
}
// generate uuid
char *uuid_value = (char *)malloc(40);
char *get_uuid_value()
{
uuid_t new_uuid;
uuid_generate(new_uuid);
uuid_unparse(new_uuid, uuid_value);
return uuid_value;
}
void xlsxwriter_excel(const int &len)
{
lxw_workbook *workbook = workbook_new("uuid.xlsx");
lxw_worksheet *worksheet = workbook_add_worksheet(workbook, NULL);
worksheet_set_column(worksheet,0,0,50,NULL); // 设置列宽
// write header
worksheet_write_string(worksheet, 0, 0, "Header", NULL);
worksheet_write_string(worksheet, 0, 1, "Number", NULL);
for (int row = 1; row <= len; row++)
{
worksheet_write_string(worksheet, row, 0, get_uuid_value(), NULL);
worksheet_write_number(worksheet, row, 1, row, NULL);
}
workbook_close(workbook);
std::cout << get_time_now(true) << ",finish in " << __FUNCTION__ << std::endl;
}
int main(int agrs,char **argv)
{
xlsxwriter_excel(atoi(argv[1])); // 读取命令行，生成几个uuid
return 0;
}
结合CGAL计算几何库对txt点集进行处理，并处理后的数据写入xlsx，示例：
#include <iostream>
#include <fstream>
#include <vector>
#include "xlsxwriter.h"
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <CGAL/Alpha_shape_2.h>
typedef CGAL::Exact_predicates_inexact_constructions_kernel K;
typedef K::Point_2 Point_2;
// 编译： g++ -o main main.cpp -lxlsxwriter -lCGAL -lgmp && ./main
int main() {
// 1. 从文本文件中读取 XY 点集
std::ifstream inputFile("input.txt");
if (!inputFile) {
std::cout << "Failed to open input file." << std::endl;
return 1;
}
std::vector<Point_2> points;
double x, y;
while (inputFile >> x >> y) {
points.push_back(Point_2(x, y));
}
inputFile.close();
// ...
// 2. 将处理后的点集写入 xlsx 文件中
lxw_workbook* workbook = workbook_new("output.xlsx");
lxw_worksheet* worksheet = workbook_add_worksheet(workbook, NULL);
int row = 0;
for (const Point_2& point : points) {
int col = 0;
worksheet_write_number(worksheet, row, col++, CGAL::to_double(point.x()), NULL);
worksheet_write_number(worksheet, row, col, CGAL::to_double(point.y()), NULL);
row++;
}
workbook_close(workbook);
std::cout << "Output file has been generated." << std::endl;
return 0;
}
以上。
