Validators.hpp
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#pragma once
// Distributed under the LGPL version 3.0 license. See accompanying
// file LICENSE or https://github.com/henryiii/CLI11 for details.
#include <string>
// C standard library
// Only needed for existence checking
// Could be swapped for filesystem in C++17
#include <sys/types.h>
#include <sys/stat.h>
namespace CLI {
/// Check for an existing file
bool ExistingFile(std::string filename) {
// std::fstream f(name.c_str());
// return f.good();
// Fastest way according to http://stackoverflow.com/questions/12774207/fastest-way-to-check-if-a-file-exist-using-standard-c-c11-c
struct stat buffer;
return (stat(filename.c_str(), &buffer) == 0);
}
/// Check for an existing directory
bool ExistingDirectory(std::string filename) {
struct stat buffer;
if(stat(filename.c_str(), &buffer) == 0 && (buffer.st_mode & S_IFDIR) )
return true;
return false;
}
/// Check for a non-existing path
bool NonexistentPath(std::string filename) {
struct stat buffer;
return stat(filename.c_str(), &buffer) != 0;
}
}