feat: Initial commit to the new structure

.github/workflows/build_dev.yml

@@ -0,0 +1,19 @@
+name: Build master
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  build_dev:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Build
+        uses: oleksiikutuzov/flipperzero-ufbt-action@v1
+        with:
+          channel: dev

README.md

@@ -1,2 +1,7 @@
 # flipper-zero-hex-viewer
+
 Hex Viewer application for Flipper Zero!
+
+https://habrastorage.org/r/w1560/getpro/habr/upload_files/46e/28a/d97/46e28ad973d144b123a4ce513c895d18.png
+
+[Link to FAP](https://nightly.link/QtRoS/flipper-zero-hex-viewer/workflows/build_dev/master/hex_viewer.fap.zip)

application.fam

@@ -0,0 +1,16 @@
+App(
+    appid="hex_viewer",
+    name="Hex Viewer",
+    apptype=FlipperAppType.EXTERNAL,
+    entry_point="hex_viewer_app",
+    cdefines=["APP_HEX_VIEWER"],
+    requires=[
+        "gui",
+        "dialogs",
+    ],
+    stack_size=2 * 1024,
+    order=20,
+    fap_icon="icons/hex_10px.png",
+    fap_category="Misc",
+    fap_icon_assets="icons",
+)

hex_viewer.c

@@ -0,0 +1,285 @@
+#include <furi.h>
+#include <furi_hal.h>
+
+#include <hex_viewer_icons.h>
+#include <gui/gui.h>
+#include <gui/elements.h>
+#include <dialogs/dialogs.h>
+
+#include <storage/storage.h>
+#include <stream/stream.h>
+#include <stream/buffered_file_stream.h>
+#include <toolbox/stream/file_stream.h>
+
+#define TAG "HexViewer"
+
+#define HEX_VIEWER_APP_PATH_FOLDER "/any"
+#define HEX_VIEWER_APP_EXTENSION "*"
+
+#define HEX_VIEWER_BYTES_PER_ROW 4
+#define HEX_VIEWER_ROW_COUNT 4
+#define HEX_VIEWER_BUF_SIZE (HEX_VIEWER_BYTES_PER_ROW * HEX_VIEWER_ROW_COUNT)
+
+typedef struct {
+    uint8_t file_bytes[HEX_VIEWER_ROW_COUNT][HEX_VIEWER_ROW_COUNT];
+    uint32_t line;
+    uint32_t read_bytes;
+    uint32_t file_size;
+    Stream* stream;
+    bool mode; // Print address or content
+} HexViewerModel;
+
+typedef struct {
+    HexViewerModel* model;
+    FuriMutex** mutex;
+
+    FuriMessageQueue* input_queue;
+
+    ViewPort* view_port;
+    Gui* gui;
+    Storage* storage;
+} HexViewer;
+
+static void render_callback(Canvas* canvas, void* ctx) {
+    HexViewer* hex_viewer = ctx;
+    furi_check(furi_mutex_acquire(hex_viewer->mutex, FuriWaitForever) == FuriStatusOk);
+
+    canvas_clear(canvas);
+    canvas_set_color(canvas, ColorBlack);
+
+    elements_button_left(canvas, hex_viewer->model->mode ? "Addr" : "Text");
+    elements_button_right(canvas, "Info");
+
+    int ROW_HEIGHT = 12;
+    int TOP_OFFSET = 10;
+    int LEFT_OFFSET = 3;
+
+    uint32_t line_count = hex_viewer->model->file_size / HEX_VIEWER_BYTES_PER_ROW;
+    if(hex_viewer->model->file_size % HEX_VIEWER_BYTES_PER_ROW != 0) line_count += 1;
+    if(line_count > HEX_VIEWER_ROW_COUNT) {
+        uint8_t width = canvas_width(canvas);
+        elements_scrollbar_pos(
+            canvas,
+            width,
+            0,
+            ROW_HEIGHT * HEX_VIEWER_ROW_COUNT,
+            hex_viewer->model->line,
+            line_count - (HEX_VIEWER_ROW_COUNT - 1));
+    }
+
+    char temp_buf[32];
+    uint32_t row_iters = hex_viewer->model->read_bytes / HEX_VIEWER_BYTES_PER_ROW;
+    if(hex_viewer->model->read_bytes % HEX_VIEWER_BYTES_PER_ROW != 0) row_iters += 1;
+
+    for(uint32_t i = 0; i < row_iters; ++i) {
+        uint32_t bytes_left_per_row = hex_viewer->model->read_bytes - i * HEX_VIEWER_BYTES_PER_ROW;
+        if(bytes_left_per_row > HEX_VIEWER_BYTES_PER_ROW)
+            bytes_left_per_row = HEX_VIEWER_BYTES_PER_ROW;
+
+        if(hex_viewer->model->mode) {
+            memcpy(temp_buf, hex_viewer->model->file_bytes[i], bytes_left_per_row);
+            temp_buf[bytes_left_per_row] = '\0';
+            for(uint32_t j = 0; j < bytes_left_per_row; ++j)
+                if(!isprint((int)temp_buf[j])) temp_buf[j] = '.';
+
+            canvas_set_font(canvas, FontKeyboard);
+            canvas_draw_str(canvas, LEFT_OFFSET, TOP_OFFSET + i * ROW_HEIGHT, temp_buf);
+        } else {
+            int addr = (i + hex_viewer->model->line) * HEX_VIEWER_BYTES_PER_ROW;
+            snprintf(temp_buf, 32, "%04X", addr);
+
+            canvas_set_font(canvas, FontKeyboard);
+            canvas_draw_str(canvas, LEFT_OFFSET, TOP_OFFSET + i * ROW_HEIGHT, temp_buf);
+        }
+
+        char* p = temp_buf;
+        for(uint32_t j = 0; j < bytes_left_per_row; ++j)
+            p += snprintf(p, 32, "%02X ", hex_viewer->model->file_bytes[i][j]);
+
+        canvas_set_font(canvas, FontKeyboard);
+        canvas_draw_str(canvas, LEFT_OFFSET + 41, TOP_OFFSET + i * ROW_HEIGHT, temp_buf);
+    }
+
+    furi_mutex_release(hex_viewer->mutex);
+}
+
+static void input_callback(InputEvent* input_event, void* ctx) {
+    HexViewer* hex_viewer = ctx;
+    if(input_event->type == InputTypeShort) {
+        furi_message_queue_put(hex_viewer->input_queue, input_event, 0);
+    }
+}
+
+static HexViewer* hex_viewer_alloc() {
+    HexViewer* instance = malloc(sizeof(HexViewer));
+
+    instance->model = malloc(sizeof(HexViewerModel));
+    memset(instance->model, 0x0, sizeof(HexViewerModel));
+
+    instance->mutex = furi_mutex_alloc(FuriMutexTypeNormal);
+
+    instance->input_queue = furi_message_queue_alloc(8, sizeof(InputEvent));
+
+    instance->view_port = view_port_alloc();
+    view_port_draw_callback_set(instance->view_port, render_callback, instance);
+    view_port_input_callback_set(instance->view_port, input_callback, instance);
+
+    instance->gui = furi_record_open(RECORD_GUI);
+    gui_add_view_port(instance->gui, instance->view_port, GuiLayerFullscreen);
+
+    instance->storage = furi_record_open(RECORD_STORAGE);
+
+    return instance;
+}
+
+static void hex_viewer_free(HexViewer* instance) {
+    furi_record_close(RECORD_STORAGE);
+
+    gui_remove_view_port(instance->gui, instance->view_port);
+    furi_record_close(RECORD_GUI);
+    view_port_free(instance->view_port);
+
+    furi_message_queue_free(instance->input_queue);
+
+    furi_mutex_free(instance->mutex);
+
+    if(instance->model->stream) buffered_file_stream_close(instance->model->stream);
+
+    free(instance->model);
+    free(instance);
+}
+
+static bool hex_viewer_open_file(HexViewer* hex_viewer, const char* file_path) {
+    furi_assert(hex_viewer);
+    furi_assert(file_path);
+
+    hex_viewer->model->stream = buffered_file_stream_alloc(hex_viewer->storage);
+    bool isOk = true;
+
+    do {
+        if(!buffered_file_stream_open(
+               hex_viewer->model->stream, file_path, FSAM_READ, FSOM_OPEN_EXISTING)) {
+            FURI_LOG_E(TAG, "Unable to open stream: %s", file_path);
+            isOk = false;
+            break;
+        };
+
+        hex_viewer->model->file_size = stream_size(hex_viewer->model->stream);
+    } while(false);
+
+    return isOk;
+}
+
+static bool hex_viewer_read_file(HexViewer* hex_viewer) {
+    furi_assert(hex_viewer);
+    furi_assert(hex_viewer->model->stream);
+
+    memset(hex_viewer->model->file_bytes, 0x0, HEX_VIEWER_BUF_SIZE);
+    bool isOk = true;
+
+    do {
+        uint32_t offset = hex_viewer->model->line * HEX_VIEWER_BYTES_PER_ROW;
+        if(!stream_seek(hex_viewer->model->stream, offset, true)) {
+            FURI_LOG_E(TAG, "Unable to seek stream");
+            isOk = false;
+            break;
+        }
+
+        hex_viewer->model->read_bytes = stream_read(
+            hex_viewer->model->stream,
+            (uint8_t*)hex_viewer->model->file_bytes,
+            HEX_VIEWER_BUF_SIZE);
+    } while(false);
+
+    return isOk;
+}
+
+int32_t hex_viewer_app(void* p) {
+    HexViewer* hex_viewer = hex_viewer_alloc();
+
+    FuriString* file_path;
+    file_path = furi_string_alloc();
+
+    do {
+        if(p && strlen(p)) {
+            furi_string_set(file_path, (const char*)p);
+        } else {
+            furi_string_set(file_path, HEX_VIEWER_APP_PATH_FOLDER);
+
+            DialogsFileBrowserOptions browser_options;
+            dialog_file_browser_set_basic_options(
+                &browser_options, HEX_VIEWER_APP_EXTENSION, &I_hex_10px);
+            browser_options.hide_ext = false;
+
+            DialogsApp* dialogs = furi_record_open(RECORD_DIALOGS);
+            bool res = dialog_file_browser_show(dialogs, file_path, file_path, &browser_options);
+
+            furi_record_close(RECORD_DIALOGS);
+            if(!res) {
+                FURI_LOG_I(TAG, "No file selected");
+                break;
+            }
+        }
+
+        if(!hex_viewer_open_file(hex_viewer, furi_string_get_cstr(file_path))) break;
+        hex_viewer_read_file(hex_viewer);
+
+        InputEvent input;
+        while(furi_message_queue_get(hex_viewer->input_queue, &input, FuriWaitForever) ==
+              FuriStatusOk) {
+            if(input.key == InputKeyBack) {
+                break;
+            } else if(input.key == InputKeyUp) {
+                furi_check(furi_mutex_acquire(hex_viewer->mutex, FuriWaitForever) == FuriStatusOk);
+                if(hex_viewer->model->line > 0) {
+                    hex_viewer->model->line--;
+
+                    if(!hex_viewer_read_file(hex_viewer)) break;
+                }
+                furi_mutex_release(hex_viewer->mutex);
+            } else if(input.key == InputKeyDown) {
+                furi_check(furi_mutex_acquire(hex_viewer->mutex, FuriWaitForever) == FuriStatusOk);
+                uint32_t cur_pos = hex_viewer->model->line * HEX_VIEWER_BYTES_PER_ROW +
+                                   hex_viewer->model->read_bytes;
+
+                if(hex_viewer->model->file_size > cur_pos) {
+                    hex_viewer->model->line++;
+                    if(!hex_viewer_read_file(hex_viewer)) break;
+                }
+                furi_mutex_release(hex_viewer->mutex);
+            } else if(input.key == InputKeyLeft) {
+                furi_check(furi_mutex_acquire(hex_viewer->mutex, FuriWaitForever) == FuriStatusOk);
+                hex_viewer->model->mode = !hex_viewer->model->mode;
+                furi_mutex_release(hex_viewer->mutex);
+            } else if(input.key == InputKeyRight) {
+                FuriString* buffer;
+                buffer = furi_string_alloc();
+                furi_string_printf(
+                    buffer,
+                    "File path: %s\nFile size: %lu bytes",
+                    furi_string_get_cstr(file_path),
+                    hex_viewer->model->file_size);
+
+                DialogsApp* dialogs = furi_record_open(RECORD_DIALOGS);
+                DialogMessage* message = dialog_message_alloc();
+                dialog_message_set_header(message, "Hex Viewer", 16, 2, AlignLeft, AlignTop);
+                dialog_message_set_icon(message, &I_hex_10px, 3, 2);
+                dialog_message_set_text(
+                    message, furi_string_get_cstr(buffer), 3, 16, AlignLeft, AlignTop);
+                dialog_message_set_buttons(message, NULL, NULL, "Back");
+                dialog_message_show(dialogs, message);
+
+                furi_string_free(buffer);
+                dialog_message_free(message);
+                furi_record_close(RECORD_DIALOGS);
+            }
+
+            view_port_update(hex_viewer->view_port);
+        }
+    } while(false);
+
+    furi_string_free(file_path);
+    hex_viewer_free(hex_viewer);
+
+    return 0;
+}