[FL-1371] New LF-RFID app. Second encounter. (#547)

* File worker: file operations helper.
* Notification app: removed yield
* File worker: write operations, calls to system file widgets
* App ibutton: use file worker
* Lfrfid: generic key loading, add path helper and hex conversion to lib
* FileWorker: plain C verison
* FileWorker: add to lib.mk
* FileWorker: add to C sources, instead of CPP
* Lfrfid: save scene
* App lfrfid: add key scene, saved key menu
* App lfrfid: saved key info scene
* App lfrfid: delete key scene

applications/lfrfid/helpers/rfid-key.cpp

@@ -1,12 +1,9 @@
 #include "rfid-key.h"
 #include <furi/check.h>
+#include <string.h>
 
 RfidKey::RfidKey() {
-    data.fill(0);
-
-    for(uint8_t i = 0; i < (LFRFID_KEY_NAME_SIZE + 1); i++) {
-        name[i] = 0;
-    }
+    clear();
 }
 
 RfidKey::~RfidKey() {
@@ -16,18 +13,22 @@ void RfidKey::set_type(LfrfidKeyType _type) {
     type = _type;
 }
 
-void RfidKey::set_data(uint8_t* _data, const uint8_t _data_size) {
+void RfidKey::set_data(const uint8_t* _data, const uint8_t _data_size) {
     furi_assert(_data_size <= data.size());
     for(uint8_t i = 0; i < _data_size; i++) {
         data[i] = _data[i];
     }
 }
 
+void RfidKey::set_name(const char* _name) {
+    strlcpy(name, _name, get_name_length());
+}
+
 LfrfidKeyType RfidKey::get_type() {
     return type;
 }
 
-uint8_t* RfidKey::get_data() {
+const uint8_t* RfidKey::get_data() {
     return &data[0];
 }
 
@@ -42,3 +43,23 @@ const uint8_t RfidKey::get_type_data_count() {
 char* RfidKey::get_name() {
     return name;
 }
+
+uint8_t RfidKey::get_name_length() {
+    return LFRFID_KEY_NAME_SIZE;
+}
+
+void RfidKey::clear() {
+    set_name("");
+    set_type(LfrfidKeyType::KeyEM4100);
+    data.fill(0);
+}
+
+RfidKey& RfidKey::operator=(const RfidKey& rhs) {
+    if(this == &rhs) return *this;
+
+    set_type(rhs.type);
+    set_name(rhs.name);
+    set_data(&rhs.data[0], get_type_data_count());
+
+    return *this;
+}