FileIO.hpp

#include <unistd.h>
#include <sys/stat.h>
#include <dirent.h>
#include <cstdio>

//wrapper class for POSIX
namespace FileIO {
bool fileExists(const std::string& filename) {
    return access(filename.c_str(),F_OK) == 0;
}

bool canAccess(const std::string& directory) {
    return access(directory.c_str(),W_OK | R_OK) == 0;
}

bool directoryExists(const std::string& directory) {
    struct stat st;
    if(stat(directory.c_str(),&st) == 0)
        return true;
    else
        return false;
}
void createDirectory(const std::string& directory) {
    if(directory.length() > 0)
        mkdir(directory.c_str());
}

void clearFolder(const std::string& folder) {
    struct dirent* nextFile;
    DIR* dir = opendir(folder.c_str());
    char filepath[256];
    while((nextFile = readdir(dir))) {
        sprintf(filepath, "%s/%s",folder.c_str(),nextFile->d_name);
        remove(filepath);
    }
}

void deleteFolder(const std::string& folder) {
    clearFolder(folder);
    remove(folder.c_str());
}

std::vector<std::string> listDirectories(const std::string& directory) {
    std::vector<std::string> files;
    DIR* dir;
    struct dirent* ent;
    dir = opendir(directory.c_str());
    while((ent = readdir(dir)) != NULL) {
        const std::string fileName = ent->d_name;
        if(fileName[0] == '.')
            continue;
        files.push_back(fileName);
    }
    closedir(dir);
    return files;
}
}