- better parse of /proc/meminfo

- delete useless variable declaration

2 files changed, 47 insertions, 24 deletions

diff --git a/noncore/settings/sysinfo/memory.cpp b/noncore/settings/sysinfo/memory.cpp
index 23dd8bd..05349e4 100644
--- a/noncore/settings/sysinfo/memory.cpp
+++ b/noncore/settings/sysinfo/memory.cpp
@@ -19,123 +19,147 @@
 **********************************************************************/
 
 #include <qlabel.h>
 #include <qtimer.h>
 #include <qfile.h>
 #include <qtextstream.h>
 #include <qlayout.h>
 #include <qwhatsthis.h>
 #include "graph.h"
 #include "memory.h"
 
 MemoryInfo::MemoryInfo( QWidget *parent, const char *name, WFlags f )
     : QWidget( parent, name, f )
 {
     QVBoxLayout *vb = new QVBoxLayout( this, 5 );
 
     totalMem = new QLabel( this );
     vb->addWidget( totalMem );
 
     data = new GraphData();
     graph = new BarGraph( this );
     graph->setFrameStyle( QFrame::Panel | QFrame::Sunken );
     vb->addWidget( graph, 1 );
     graph->setData( data );
 
     legend = new GraphLegend( this );
     vb->addWidget( legend );
     legend->setData( data );
 
     swapMem = new QLabel( this );
     vb->addWidget( swapMem );
 
     swapdata = new GraphData();
     swapgraph = new BarGraph( this );
     swapgraph->setFrameStyle( QFrame::Panel | QFrame::Sunken );
     vb->addWidget( swapgraph, 1 );
     swapgraph->setData( swapdata );
 
     swaplegend = new GraphLegend( this );
     vb->addWidget( swaplegend );
     swaplegend->setData( swapdata );
 
     vb->addStretch( 1 );
     updateData();
 
     QTimer *t = new QTimer( this );
     connect( t, SIGNAL( timeout() ), this, SLOT( updateData() ) );
     t->start( 5000 );
 
     QWhatsThis::add( this, tr( "This page shows how memory (i.e. RAM) is being allocated on your device.\nMemory is categorized as follows:\n\n1. Used - memory used to by Opie and any running applications.\n2. Buffers - temporary storage used to improve performance\n3. Cached - information that has recently been used, but has not been freed yet.\n4. Free - memory not currently used by Opie or any running applications." ) );
 
 }
 
 MemoryInfo::~MemoryInfo()
 {
     delete data;
 }
 
 void MemoryInfo::updateData()
 {
     QFile file( "/proc/meminfo" );
 
     if ( file.open( IO_ReadOnly ) )
     {
+        // local variables
+        QString line;
+        QString identifier;
+        QString value;
+        int position;
         QTextStream t( &file );
-        QString dummy = t.readLine();   // title
-        t >> dummy;
-        t >> total;
-        total /= 1000;
-        t >> used;
-        used /= 1000;
-        t >> memfree;
-        memfree /= 1000;
-        t >> shared;
-        shared /= 1000;
-        t >> buffers;
-        buffers /= 1000;
-        t >> cached;
-        cached /= 1000;
+
+        while ( !t.atEnd() )
+        {
+            // read a line
+            line = t.readLine();
+
+            // extract identifier and value from line
+            position = line.find( ":" );
+            identifier = line.left( position );
+            value = line.mid( position + 1, line.length() - position - 3 );
+            value = value.stripWhiteSpace();
+
+            // copy values in variables
+            if ( identifier == "MemTotal" )
+            {
+                total = value.toULong();
+            } else if ( identifier == "MemFree" )
+            {
+                memfree = value.toULong();
+            } else if ( identifier == "Buffers" )
+            {
+                buffers = value.toULong();
+            } else if ( identifier == "Cached" )
+            {
+                cached = value.toULong();
+            } else if ( identifier == "SwapCached" )
+            {
+            } else if ( identifier == "SwapTotal" )
+            {
+                swaptotal = value.toULong();
+            } else if ( identifier == "SwapFree" )
+            {
+                swapfree = value.toULong();
+            }
+        }
+
+        file.close();
+
+        // calculate values
+        used = total - memfree;
+        swapused = swaptotal - swapfree;
         realUsed = total - ( buffers + cached + memfree );
 
+        // visualize values
         totalMem->setText( tr( "Total Memory: %1 kB" ).arg( total ) );
         data->clear();
         data->addItem( tr("Used (%1 kB)").arg(realUsed), realUsed );
         data->addItem( tr("Buffers (%1 kB)").arg(buffers), buffers );
         data->addItem( tr("Cached (%1 kB)").arg(cached), cached );
         data->addItem( tr("Free (%1 kB)").arg(memfree), memfree );
 
         graph->hide();
         graph->show();
         legend->update();
 
-        // swapfile
-        t >> dummy;
-        t >> swaptotal;
-        swaptotal /= 1000;
-        t >> swapused;
-        swapused /= 1000;
-        t >> swapfree;
-        swapfree /= 1000;
-
         if (swaptotal > 0)
         {
             swapMem->setText( tr( "Total Swap: %1 kB" ).arg( swaptotal ) );
             swapdata->clear();
             swapdata->addItem( tr("Used (%1 kB)").arg(swapused), swapused );
             swapdata->addItem( tr("Free (%1 kB)").arg(swapfree), swapfree );
 
             swapMem->show();
             swapgraph->show();
             swaplegend->show();
 
             swapgraph->repaint( FALSE );
             swaplegend->update();
         }
         else
         {
             swapMem->hide();
             swapgraph->hide();
             swaplegend->hide();
         }
     }
 }
diff --git a/noncore/settings/sysinfo/memory.h b/noncore/settings/sysinfo/memory.h
index c2af948..f655604 100644
--- a/noncore/settings/sysinfo/memory.h
+++ b/noncore/settings/sysinfo/memory.h
@@ -1,64 +1,63 @@
 /**********************************************************************
 ** Copyright (C) 2000 Trolltech AS.  All rights reserved.
 **
 ** This file is part of Qtopia Environment.
 **
 ** This file may be distributed and/or modified under the terms of the
 ** GNU General Public License version 2 as published by the Free Software
 ** Foundation and appearing in the file LICENSE.GPL included in the
 ** packaging of this file.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ** See http://www.trolltech.com/gpl/ for GPL licensing information.
 **
 ** Contact info@trolltech.com if any conditions of this licensing are
 ** not clear to you.
 **
 **********************************************************************/
 
 #ifndef MEMORY_H
 #define MEMORY_H
 
 #include <qwidget.h>
 
 class GraphData;
 class Graph;
 class GraphLegend;
 class QLabel;
 
 class MemoryInfo : public QWidget
 {
     Q_OBJECT
 public:
     MemoryInfo( QWidget *parent = 0, const char *name = 0, WFlags f = 0 );
     ~MemoryInfo();
 
     unsigned long total;
     unsigned long used;
     unsigned long memfree;
-    unsigned long shared;
     unsigned long buffers;
     unsigned long cached;
     unsigned long realUsed;
     unsigned long swaptotal;
     unsigned long swapused;
     unsigned long swapfree;
 
 private slots:
     void updateData();
 
 private:
     QLabel *totalMem;
     GraphData *data;
     Graph *graph;
     GraphLegend *legend;
 
     QLabel* swapMem;
     GraphData *swapdata;
     Graph *swapgraph;
     GraphLegend *swaplegend;
 };
 
 #endif