iio_widget: Reenable reading all device attributes

Signed-off-by: Dan <[email protected]>

Author: dNechita

iio_utils.c

@@ -5,6 +5,8 @@
 #include <gtk/gtk.h>
 #include <errno.h>
 
+#define ARRAY_SIZE(x) (!sizeof(x) ?: sizeof(x) / sizeof((x)[0]))
+
 static gint iio_chn_cmp_by_name(gconstpointer ptr_a, gconstpointer ptr_b)
 {
 	struct iio_channel *ch_a = *(struct iio_channel **)ptr_a;
@@ -303,3 +305,24 @@ int chn_attr_write_longlong(struct iio_channel *chn, const char *attr_name, long
 	else
 		return -ENOENT;
 }
+
+void dev_attr_read_all(struct iio_device *dev,
+    int (*cb)(struct iio_device *dev, const char *attr, const char *value, size_t len, void *d),
+    void *data)
+{
+	unsigned int i, attr_cnt = iio_device_get_attrs_count(dev);
+	const struct iio_attr *attr;
+	char local_value[8192];
+	int ret;
+
+	for (i = 0; i < attr_cnt; ++i) {
+		attr = iio_device_get_attr(dev, i);
+		ret = iio_attr_read_raw(attr, local_value, ARRAY_SIZE(local_value));
+		if (ret < 0) {
+			fprintf(stderr, "Failed to read attribute: %s\n", iio_attr_get_name(attr));
+			continue;
+		} else {
+			cb(dev, iio_attr_get_name(attr), local_value, strlen(local_value), data);
+		}
+	}
+}

iio_utils.h

@@ -48,4 +48,9 @@ inline int chn_attr_write_bool(struct iio_channel *chn, const char *attr_name, b
 inline int chn_attr_write_double(struct iio_channel *chn, const char *attr_name, double value);
 inline int chn_attr_write_longlong(struct iio_channel *chn, const char *attr_name, long long value);
 
+/* Helpers to iterate through all attributes */
+inline void dev_attr_read_all(struct iio_device *dev,
+    int (*cb)(struct iio_device *dev, const char *attr, const char *value, size_t len, void *d),
+    void *data);
+
 #endif  /* __IIO_UTILS__ */

iio_widget.c

@@ -14,6 +14,7 @@
 #include <math.h>
 
 #include "iio_widget.h"
+#include "iio_utils.h"
 
 struct update_widgets_params {
 	struct iio_widget *widgets;
@@ -696,7 +697,7 @@ void iio_update_widgets_of_device(struct iio_widget *widgets,
 	};
 
 	// !!!!!!!!
-//	iio_device_attr_read_all(dev, __cb_dev_update, &params);
+	dev_attr_read_all(dev, __cb_dev_update, &params);
 
 //	for (i = 0; i < iio_device_get_channels_count(dev); i++)
 //		iio_channel_attr_read_all(iio_device_get_channel(dev, i),