Automatically reload image on exec

Resets cache and reloads the current image after executing external
command.

Signed-off-by: Artem Senichev <artemsen@gmail.com>

src/imagelist.c

@@ -461,7 +461,7 @@ struct image_entry image_list_current(const struct image_list* ctx)
     return entry;
 }
 
-int image_list_cur_exec(const struct image_list* ctx)
+int image_list_exec(const struct image_list* ctx)
 {
     const char* template = ctx->config->exec_cmd;
     const char* path = ctx->current->file_path;
@@ -511,14 +511,30 @@ int image_list_cur_exec(const struct image_list* ctx)
     return rc;
 }
 
-bool image_list_cur_reload(struct image_list* ctx)
+bool image_list_reset(struct image_list* ctx)
 {
-    struct image* image = image_from_file(ctx->current->file_path);
-    if (image) {
-        image_free(ctx->current);
-        ctx->current = image;
+    // reset cache
+    preloader_ctl(ctx, false);
+    if (ctx->prev) {
+        image_free(ctx->prev);
+        ctx->prev = NULL;
+    }
+    if (ctx->next) {
+        image_free(ctx->next);
+        ctx->next = NULL;
+    }
+
+    // reload current image
+    image_free(ctx->current);
+    ctx->current = image_from_file(ctx->entries[ctx->index]->path);
+    if (ctx->current) {
+        preloader_ctl(ctx, true);
+        return true;
     }
-    return !!image;
+
+    // open nearest image
+    return image_list_jump(ctx, jump_next_file) ||
+        image_list_jump(ctx, jump_prev_file);
 }
 
 bool image_list_jump(struct image_list* ctx, enum list_jump jump)

src/imagelist.h

@@ -63,14 +63,14 @@ struct image_entry image_list_current(const struct image_list* ctx);
  * @param ctx image list context
  * @return error code from the system call
  */
-int image_list_cur_exec(const struct image_list* ctx);
+int image_list_exec(const struct image_list* ctx);
 
 /**
- * Reload the current image.
+ * Reset cache and reload current image.
  * @param ctx image list context
- * @return false if reload failed
+ * @return false if reset failed (no more images)
  */
-bool image_list_cur_reload(struct image_list* ctx);
+bool image_list_reset(struct image_list* ctx);
 
 /**
  * Move through image list.

src/viewer.c

@@ -444,24 +444,31 @@ bool viewer_on_keyboard(void* data, struct ui* ui, xkb_keysym_t key)
                         ctx->config->antialiasing ? "on" : "off");
             return true;
         case cfgact_reload:
-            if (image_list_cur_reload(ctx->list)) {
+            if (image_list_reset(ctx->list)) {
                 reset_state(ctx, ui);
                 set_message(ctx, "Image reloaded");
                 return true;
             } else {
-                set_message(ctx, "Reload failed");
+                printf("No more images, exit\n");
+                ui_stop(ui);
                 return false;
             }
         case cfgact_info:
             ctx->config->show_info = !ctx->config->show_info;
             return true;
         case cfgact_exec: {
-            const int rc = image_list_cur_exec(ctx->list);
+            const int rc = image_list_exec(ctx->list);
             if (rc) {
                 set_message(ctx, "Execute failed: code %d", rc);
             } else {
                 set_message(ctx, "Execute success");
             }
+            if (!image_list_reset(ctx->list)) {
+                printf("No more images, exit\n");
+                ui_stop(ui);
+                return false;
+            }
+            reset_state(ctx, ui);
             return true;
         }
         case cfgact_quit: