feat(esp_linenoise): Add getters for out and in FD config members

Author: SoucheSouche

esp_linenoise/include/esp_linenoise.h

@@ -307,6 +307,26 @@ esp_err_t esp_linenoise_set_max_cmd_line_length(esp_linenoise_handle_t handle, s
  */
 esp_err_t esp_linenoise_get_max_cmd_line_length(esp_linenoise_handle_t handle, size_t *max_cmd_line_length);
 
+/**
+ * @brief Return the output file descriptor used by esp_linenoise
+ *
+ * @param handle The esp_linenoise handle from which to get
+ * the file descriptor
+ * @param fd Return value containing the output file descriptor
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG otherwise
+ */
+esp_err_t esp_linenoise_get_out_fd(esp_linenoise_handle_t handle, int *fd);
+
+/**
+ * @brief Return the input file descriptor used by esp_linenoise
+ *
+ * @param handle The esp_linenoise handle from which to get
+ * the file descriptor
+ * @param fd Return value containing the input file descriptor
+ * @return ESP_OK on success, ESP_ERR_INVALID_ARG otherwise
+ */
+esp_err_t esp_linenoise_get_in_fd(esp_linenoise_handle_t handle, int *fd);
+
 #ifdef __cplusplus
 }
 #endif

esp_linenoise/src/esp_linenoise.c

@@ -1544,3 +1544,29 @@ esp_err_t esp_linenoise_get_max_cmd_line_length(esp_linenoise_handle_t handle, s
     *max_cmd_line_length = ((esp_linenoise_instance_t *)handle)->config.max_cmd_line_length;
     return ESP_OK;
 }
+
+inline __attribute__((always_inline))
+esp_err_t esp_linenoise_get_out_fd(esp_linenoise_handle_t handle, int *fd)
+{
+    ESP_LINENOISE_CHECK_INSTANCE(handle);
+
+    if (fd == NULL) {
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    *fd = handle->config.out_fd;
+    return ESP_OK;
+}
+
+inline __attribute__((always_inline))
+esp_err_t esp_linenoise_get_in_fd(esp_linenoise_handle_t handle, int *fd)
+{
+    ESP_LINENOISE_CHECK_INSTANCE(handle);
+
+    if (fd == NULL) {
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    *fd = handle->config.in_fd;
+    return ESP_OK;
+}

esp_linenoise/test_apps/main/test_esp_linenoise_get_set.c

@@ -121,3 +121,26 @@ TEST_CASE("save and load history to file", "[linenoise]")
 
     TEST_ASSERT_EQUAL(ESP_OK, esp_linenoise_delete_instance(h));
 }
+
+TEST_CASE("get out_fd and in_fd", "[linenoise]")
+{
+    const int test_out_fd = 5;
+    const int test_in_fd = 6;
+    esp_linenoise_config_t config;
+    esp_linenoise_get_instance_config_default(&config);
+    config.out_fd = test_out_fd;
+    config.in_fd = test_in_fd;
+
+    esp_linenoise_handle_t h;
+    TEST_ASSERT_EQUAL(ESP_OK, esp_linenoise_create_instance(&config, &h));
+    TEST_ASSERT_NOT_NULL(h);
+
+    int in_fd = -1;
+    TEST_ASSERT_EQUAL(ESP_OK, esp_linenoise_get_in_fd(h, &in_fd));
+    TEST_ASSERT_EQUAL(test_in_fd, in_fd);
+    int out_fd = -1;
+    TEST_ASSERT_EQUAL(ESP_OK, esp_linenoise_get_out_fd(h, &out_fd));
+    TEST_ASSERT_EQUAL(test_out_fd, out_fd);
+
+    TEST_ASSERT_EQUAL(ESP_OK, esp_linenoise_delete_instance(h));
+}