[FL-2744] SPI Mem Manager C port (#1860)

Co-authored-by: あく <alleteam@gmail.com>

applications/plugins/spi_mem_manager/spi_mem_files.c

@@ -0,0 +1,74 @@
+#include "spi_mem_app_i.h"
+
+void spi_mem_file_create_folder(SPIMemApp* app) {
+    if(!storage_simply_mkdir(app->storage, SPI_MEM_FILE_FOLDER)) {
+        dialog_message_show_storage_error(app->dialogs, "Cannot create\napp folder");
+    }
+}
+
+bool spi_mem_file_delete(SPIMemApp* app) {
+    return (storage_simply_remove(app->storage, furi_string_get_cstr(app->file_path)));
+}
+
+bool spi_mem_file_select(SPIMemApp* app) {
+    DialogsFileBrowserOptions browser_options;
+    dialog_file_browser_set_basic_options(&browser_options, SPI_MEM_FILE_EXTENSION, &I_Dip8_10px);
+    browser_options.base_path = SPI_MEM_FILE_FOLDER;
+    bool success =
+        dialog_file_browser_show(app->dialogs, app->file_path, app->file_path, &browser_options);
+    return success;
+}
+
+bool spi_mem_file_create_open(SPIMemApp* app) {
+    bool success = false;
+    app->file = storage_file_alloc(app->storage);
+    do {
+        if(furi_string_end_with(app->file_path, SPI_MEM_FILE_EXTENSION)) {
+            if(!spi_mem_file_delete(app)) break;
+            size_t filename_start = furi_string_search_rchar(app->file_path, '/');
+            furi_string_left(app->file_path, filename_start);
+        }
+        furi_string_cat_printf(app->file_path, "/%s%s", app->text_buffer, SPI_MEM_FILE_EXTENSION);
+        if(!storage_file_open(
+               app->file, furi_string_get_cstr(app->file_path), FSAM_WRITE, FSOM_CREATE_NEW))
+            break;
+        success = true;
+    } while(0);
+    if(!success) { //-V547
+        dialog_message_show_storage_error(app->dialogs, "Cannot save\nfile");
+    }
+    return success;
+}
+
+bool spi_mem_file_open(SPIMemApp* app) {
+    app->file = storage_file_alloc(app->storage);
+    if(!storage_file_open(
+           app->file, furi_string_get_cstr(app->file_path), FSAM_READ_WRITE, FSOM_OPEN_EXISTING)) {
+        dialog_message_show_storage_error(app->dialogs, "Cannot save\nfile");
+        return false;
+    }
+    return true;
+}
+
+bool spi_mem_file_write_block(SPIMemApp* app, uint8_t* data, size_t size) {
+    if(storage_file_write(app->file, data, size) != size) return false;
+    return true;
+}
+
+bool spi_mem_file_read_block(SPIMemApp* app, uint8_t* data, size_t size) {
+    if(storage_file_read(app->file, data, size) != size) return false;
+    return true;
+}
+
+void spi_mem_file_close(SPIMemApp* app) {
+    storage_file_close(app->file);
+    storage_file_free(app->file);
+}
+
+size_t spi_mem_file_get_size(SPIMemApp* app) {
+    FileInfo file_info;
+    if(storage_common_stat(app->storage, furi_string_get_cstr(app->file_path), &file_info) !=
+       FSE_OK)
+        return 0;
+    return file_info.size;
+}