update little fs lib to last version

lib/LITTLEFS/examples/LittleFS_test/LittleFS_test.ino

@@ -2,9 +2,10 @@
 #include "FS.h"
 #include <LITTLEFS.h>
 
-/* You only need to format SPIFFS the first time you run a
+/* You only need to format LITTLEFS the first time you run a
    test or else use the LITTLEFS plugin to create a partition
-   https://github.com/me-no-dev/arduino-esp32fs-plugin */
+   https://github.com/lorol/arduino-esp32littlefs-plugin */
+   
 #define FORMAT_LITTLEFS_IF_FAILED true
 
 void listDir(fs::FS &fs, const char * dirname, uint8_t levels){
@@ -38,6 +39,24 @@ void listDir(fs::FS &fs, const char * dirname, uint8_t levels){
     }
 }
 
+void createDir(fs::FS &fs, const char * path){
+    Serial.printf("Creating Dir: %s\n", path);
+    if(fs.mkdir(path)){
+        Serial.println("Dir created");
+    } else {
+        Serial.println("mkdir failed");
+    }
+}
+
+void removeDir(fs::FS &fs, const char * path){
+    Serial.printf("Removing Dir: %s\n", path);
+    if(fs.rmdir(path)){
+        Serial.println("Dir removed");
+    } else {
+        Serial.println("rmdir failed");
+    }
+}
+
 void readFile(fs::FS &fs, const char * path){
     Serial.printf("Reading file: %s\r\n", path);
 
@@ -104,6 +123,66 @@ void deleteFile(fs::FS &fs, const char * path){
     }
 }
 
+// SPIFFS-like write and delete file
+
+// See: https://github.com/esp8266/Arduino/blob/master/libraries/LittleFS/src/LittleFS.cpp#L60
+void writeFile2(fs::FS &fs, const char * path, const char * message){
+    if(!fs.exists(path)){
+		if (strchr(path, '/')) {
+            Serial.printf("Create missing folders of: %s\r\n", path);
+			char *pathStr = strdup(path);
+			if (pathStr) {
+				char *ptr = strchr(pathStr, '/');
+				while (ptr) {
+					*ptr = 0;
+					fs.mkdir(pathStr);
+					*ptr = '/';
+					ptr = strchr(ptr+1, '/');
+				}
+			}
+			free(pathStr);
+		}
+    }
+
+    Serial.printf("Writing file to: %s\r\n", path);
+    File file = fs.open(path, FILE_WRITE);
+    if(!file){
+        Serial.println("- failed to open file for writing");
+        return;
+    }
+    if(file.print(message)){
+        Serial.println("- file written");
+    } else {
+        Serial.println("- write failed");
+    }
+    file.close();
+}
+
+// See:  https://github.com/esp8266/Arduino/blob/master/libraries/LittleFS/src/LittleFS.h#L149
+void deleteFile2(fs::FS &fs, const char * path){
+    Serial.printf("Deleting file and empty folders on path: %s\r\n", path);
+
+    if(fs.remove(path)){
+        Serial.println("- file deleted");
+    } else {
+        Serial.println("- delete failed");
+    }
+
+    char *pathStr = strdup(path);
+    if (pathStr) {
+        char *ptr = strrchr(pathStr, '/');
+        if (ptr) {
+            Serial.printf("Removing all empty folders on path: %s\r\n", path);
+        }
+        while (ptr) {
+            *ptr = 0;
+            fs.rmdir(pathStr);
+            ptr = strrchr(pathStr, '/');
+        }
+        free(pathStr);
+    }
+}
+
 void testFileIO(fs::FS &fs, const char * path){
     Serial.printf("Testing file I/O with %s\r\n", path);
 
@@ -164,8 +243,18 @@ void setup(){
         Serial.println("LITTLEFS Mount Failed");
         return;
     }
+    Serial.println( "SPIFFS-like write file to new path and delete it w/folders" );
+    writeFile2(LITTLEFS, "/new1/new2/new3/hello3.txt", "Hello3");
+    listDir(LITTLEFS, "/", 3);
+    deleteFile2(LITTLEFS, "/new1/new2/new3/hello3.txt");
     
-    listDir(LITTLEFS, "/", 0);
+    listDir(LITTLEFS, "/", 3);
+	createDir(LITTLEFS, "/mydir");
+	writeFile(LITTLEFS, "/mydir/hello2.txt", "Hello2");
+	listDir(LITTLEFS, "/", 1);
+	deleteFile(LITTLEFS, "/mydir/hello2.txt");
+	removeDir(LITTLEFS, "/mydir");
+	listDir(LITTLEFS, "/", 1);
     writeFile(LITTLEFS, "/hello.txt", "Hello ");
     appendFile(LITTLEFS, "/hello.txt", "World!\r\n");
     readFile(LITTLEFS, "/hello.txt");
@@ -174,6 +263,7 @@ void setup(){
     deleteFile(LITTLEFS, "/foo.txt");
     testFileIO(LITTLEFS, "/test.txt");
     deleteFile(LITTLEFS, "/test.txt");
+	
     Serial.println( "Test complete" );
 }