From 69ecddf1317e71f35b1c1de00392dc76f8f1701c Mon Sep 17 00:00:00 2001
From: Stefano Karapetsas <stefano@karapetsas.com>
Date: Mon, 21 Nov 2011 23:44:15 +0100
Subject: Initial release bases on sensors-applet

---
 plugins/acpi/acpi-plugin.c | 137 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 plugins/acpi/acpi-plugin.c

(limited to 'plugins/acpi/acpi-plugin.c')

diff --git a/plugins/acpi/acpi-plugin.c b/plugins/acpi/acpi-plugin.c
new file mode 100644
index 0000000..4c0189f
--- /dev/null
+++ b/plugins/acpi/acpi-plugin.c
@@ -0,0 +1,137 @@
+/*
+ * Copyright (C) 2005-2009 Alex Murray <murray.alex@gmail.com>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif /* HAVE_CONFIG_H */
+
+#ifdef HAVE_STDIO_H
+#include <stdio.h>
+#endif /* HAVE_STDIO_H */
+
+#include <glib.h>
+#include <glib/gi18n.h>
+#include "acpi-plugin.h"
+
+const gchar *plugin_name = "acpi";
+
+#define ACPI_THERMAL_ZONE_BASE_DIR "/proc/acpi/thermal_zone"
+#define ACPI_THERMAL_BASE_DIR "/proc/acpi/thermal"
+
+enum {
+	ACPI_DEVICE_FILE_OPEN_ERROR,
+	ACPI_DEVICE_FILE_READ_ERROR
+};
+
+static void acpi_plugin_add_sensor(GList **sensors, const gchar *path) {
+	gchar *dirname;
+	gchar *id;
+        gchar *label;
+        
+        
+	dirname = g_path_get_dirname(path);
+	id = g_path_get_basename(dirname);
+	g_free(dirname);
+	
+        sensors_applet_plugin_add_sensor(sensors,
+                                         path,
+                                         id,
+                                         _("CPU"),
+                                         TEMP_SENSOR,
+                                         TRUE,
+                                         CPU_ICON,
+                                         DEFAULT_GRAPH_COLOR);
+        g_free(id);
+}	
+
+static void acpi_plugin_test_sensor(GList **sensors,
+                                    const gchar *path) {
+        gchar *filename;
+        
+        filename = g_path_get_basename(path);
+
+        if (g_ascii_strcasecmp(filename, "temperature") == 0 || 
+            g_ascii_strcasecmp(filename, "status") == 0) {
+                acpi_plugin_add_sensor(sensors, path);
+                
+        }
+        g_free(filename);
+
+}
+
+
+
+/* to be called to setup for acpi sensors and returns the list of found
+ * sensors */
+static GList *acpi_plugin_init(void) {
+        GList *sensors = NULL;
+        
+        /* call function to recursively look for sensors
+           starting at the defined base directory */
+        sensors_applet_plugin_find_sensors(&sensors, ACPI_THERMAL_ZONE_BASE_DIR, acpi_plugin_test_sensor);
+        sensors_applet_plugin_find_sensors(&sensors, ACPI_THERMAL_BASE_DIR, acpi_plugin_test_sensor);
+        return sensors;
+}
+
+
+static gdouble acpi_plugin_get_sensor_value(const gchar *path, 
+                                            const gchar *id, 
+                                            SensorType type,
+                                            GError **error) {
+        
+	/* to open and access the value of each sensor */
+	FILE *fp;
+	gfloat sensor_value = -1.0f;
+	gchar units[32];
+
+	if (NULL == (fp = fopen(path, "r"))) {
+		g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, ACPI_DEVICE_FILE_OPEN_ERROR, "Error opening sensor device file %s", path);
+		return sensor_value;
+	}
+
+	if (fscanf(fp, "temperature: %f %31s", &sensor_value, units) < 1) {
+		g_set_error(error, SENSORS_APPLET_PLUGIN_ERROR, ACPI_DEVICE_FILE_READ_ERROR, "Error reading from sensor device file %s", path);
+		fclose(fp);
+		return sensor_value;
+	}
+	fclose(fp);
+
+	/* need to convert if units are deciKelvin */
+	if (g_ascii_strcasecmp(units, "dK") == 0) {
+		sensor_value = (sensor_value / 10.0) - 273.0;
+	}
+
+	return (gdouble)sensor_value;
+}
+
+const gchar *sensors_applet_plugin_name(void) 
+{
+        return plugin_name;
+}
+
+GList *sensors_applet_plugin_init(void) 
+{
+        return acpi_plugin_init();
+}
+
+gdouble sensors_applet_plugin_get_sensor_value(const gchar *path, 
+                                                const gchar *id, 
+                                                SensorType type,
+                                                GError **error) {
+        return acpi_plugin_get_sensor_value(path, id, type, error);
+}
-- 
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