// Configuring tasks.json for C/C++ debugging
// author: huihut
// repo: https://gist.github.com/huihut/9548fe7e1084cf8e844120c5668b8177

// Available variables which can be used inside of strings.
// ${workspaceRoot}: the root folder of the team        
// ${file}: the current opened file                     
// ${fileBasename}: the current opened file's basename 
// ${fileDirname}: the current opened file's dirname    
// ${fileExtname}: the current opened file's extension  
// ${cwd}: the current working directory of the spawned process

{
    "version": "0.2.0",
    "configurations": [
        {
            "name": "(gdb) Launch",
            "preLaunchTask": "build",
            "type": "cppdbg",
            "request": "launch",
            "program": "${fileDirname}/${fileBasenameNoExtension}.exe",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${workspaceFolder}",
            "environment": [],
            "externalConsole": true,
            "MIMode": "gdb",
            "miDebuggerPath": "gdb.exe",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ]
        }]
}

// C++ call Python module 
// author: huihut
// repo: https://gist.github.com/huihut/b4597d097123a8c8388c71b3f0ff21e5

#include <iostream>
#include <Python.h>

// C++ call Python module
bool CppCallPython()
{
    // Python initialize
    Py_Initialize();
    if (!Py_IsInitialized())
    {
        std::cout << "Python initialization failed!\n";
        return false;
    }

    // If my MyPython.py file is in "/Users/xx/code", set the working path to "/Users/xx/code"
    std::string path = "/Users/xx/code";
    PySys_SetPath(&path[0u]);

    // Import MyPython.py module
    PyObject* pModule = PyImport_ImportModule("MyPython");
    if (!pModule)
    {
        std::cout <<"Cannot open Python file!\n";
        return false;
    }

    // Get the HelloPython() function in the module
    PyObject* pFunhello = PyObject_GetAttrString(pModule, "HelloPython");
    if (!pFunhello)
    {
        std::cout << "Failed to get this function!";
        return false;
    }

    // Call HelloPython()
    PyObject_CallFunction(pFunhello, NULL);

    // Finalize
    Py_Finalize();

    return true;
}

// C++ 使用 Qt 生成 CSV 文件
// 以下函数实现生成特定类型的 CSV 文件，可用于生成带标签的数据集 CSV 文件，标签为图片上一级的文件夹名字。
// 作者：huihut
// 仓库：https://gist.github.com/huihut/c9f43e276ef7652f0471725482a1e4f6

/*

目录结构（使用 tree 命令查看）：

xx@xxs-MacBook-Pro:~/code/dataset$ tree
.
├── README
├── dataset_csv.txt
├── s01
│   ├── 01.pgm
│   ├── ...
│   └── 10.pgm
├── s02
│   ├── 01.pgm
│   ├── ...
│   └── 10.pgm
...
└── s10
    ├── 01.pgm
    ├── ...
    └── 10.pgm

-----------------------------------------------------------

生成的 CSV 文件内容（使用 cat 命令查看 dataset_csv.txt 文件内容）：

xx@xxs-MacBook-Pro:~/code/dataset$ cat dataset_csv.txt
/Users/xx/code/dataset/s01/01.pgm,s01
/Users/xx/code/dataset/s01/02.pgm,s01
...
/Users/xx/code/dataset/s01/10.pgm,s01
/Users/xx/code/dataset/s02/01.pgm,s02
/Users/xx/code/dataset/s02/02.pgm,s02
...
/Users/xx/code/dataset/s10/01.pgm,s10
/Users/xx/code/dataset/s10/02.pgm,s10
...
/Users/xx/code/dataset/s10/10.pgm,s10

*/


#include <QDir>
#include <QDebug>
#include <QDirIterator>

bool CreateCSV()
{
    // 数据集的基础路径
    QString datasetdir = "/Users/xx/code/dataset";

    // 生成的 CSV 文件的名字
    QString csvName = "dataset_csv.txt";

    // 数据集路径与数据集名字的分隔符
    char separator = ',';
    
    // 数据集路径、数据集名字
    QString datasetPath, datasetName;

    // 文件迭代器：获取指定类型（以下是 pgm、png、jpg 三种类型）的数据集文件
    QDirIterator it(datasetdir, QStringList() << "*.pgm" << "*.png" << "*.jpg", QDir::Files, QDirIterator::Subdirectories);
    if(!it.hasNext())
    {
        qDebug() << "当前路径下数据集为空！\n";
        return false;
    }

    // 创建及打开 CSV 文件
    QFile file(datasetdir + QDir::toNativeSeparators("/") + csvName);
    if (!file.open(QIODevice::WriteOnly | QIODevice::Text))
    {
        qDebug() << "打开 CSV 文件失败！\n";
        return false;
    }
    // 文件写的文本流
    QTextStream csv_ts(&file);

    // 文件迭代器中有指定数据集文件则依次迭代
    while (it.hasNext())
    {
        // 数据集路径
        datasetPath = it.next();
        // 数据集名字
        datasetName = datasetPath.section(QDir::toNativeSeparators("/"), -2, -2);
        // 写入文本流
        csv_ts << datasetPath << separator << datasetName << "\n";
    }
    // 关闭文本流
    file.close();

    return true;
}