Merge pull request #54 from mohanex/master

New example program

examples/extension_lookup.cpp

@@ -0,0 +1,80 @@
+/*
+*This example code is written by AFASSI Mohamed
+*
+*It uses the Dirent library to search for files with specific extension in a directory
+*In this example I just print out the files found but instead you could manipulate them.
+*For i.e. I used this script in a project to find csv files and format them into Binary files
+*
+*
+* Compile this file with Visual Studio and run the produced command in
+* console with an extension name and directory name argument.
+*
+*
+* Copyright (C) 1998-2019 Toni Ronkko
+* This file is part of dirent.  Dirent may be freely distributed
+* under the MIT license.  For all details and documentation, see
+* https://github.com/tronkko/dirent
+ */
+
+#define _CRT_SECURE_NO_WARNINGS
+#include <iostream>
+#include <fstream>
+#include <sstream>
+#include <vector>
+#include <dirent.h>
+#include <stdio.h>
+#include <cstring>
+#include <string.h>
+
+using namespace std;
+
+int main(int argc, char *argv[]) 
+{
+    string directory, extension;
+    string csvFiles[50];
+    string csvFiles_output[50];
+    int i = 0;
+    string csv_extension = ".csv";
+    string bin_extension = ".bin";
+
+    DIR* di;
+    char* ptr1, * ptr2;
+    int retn;
+    struct dirent* dir;
+
+    cout << "What extension you search for? ";
+    cin >> extension;
+
+    cout << "Directory where you want to search for " + extension + " extension : ";
+    cin >> directory;
+
+    int length = directory.length();
+    char* char_array = new char[length + 1];
+    strcpy(char_array, directory.c_str());
+
+    int length2 = extension.length();
+    char* char_array2 = new char[length2 + 1];
+    strcpy(char_array2, extension.c_str());
+
+    di = opendir(char_array); //specify the directory name
+    if (di)
+    {
+        while ((dir = readdir(di)) != NULL)
+        {
+            ptr1 = strtok(dir->d_name, ".");
+            ptr2 = strtok(NULL, ".");
+            if (ptr2 != NULL)
+            {
+                retn = strcmp(ptr2, char_array2);
+                if (retn == 0)
+                {
+                    cout << ptr1 << "\n";
+                }
+            }
+            i++;
+        }
+        closedir(di);
+    }
+
+    return 0;
+}