ACPI Battery meter

contributed by Ian Hands

BatteryMeter.c

+/*
+  htop
+  (C) 2004-2006 Hisham H. Muhammad
+  Released under the GNU GPL, see the COPYING file
+  in the source distribution for its full text.
+
+  This "Meter" written by Ian P. Hands (iphands@gmail.com).
+*/
+
+#include "BatteryMeter.h"
+#include "Meter.h"
+#include "ProcessList.h"
+#include "CRT.h"
+#include "String.h"
+#include "debug.h"
+
+int BatteryMeter_attributes[] = {
+   BATTERY
+};
+
+static unsigned long int parseBatInfo(const char * fileName, const unsigned short int lineNum, const unsigned short int wordNum) {
+   const DIR *batteryDir;
+   const struct dirent *pDirEnt;
+  
+   const char batteryPath[] = PROCDIR "/acpi/battery/";
+   batteryDir = opendir(batteryPath);
+  
+   if (batteryDir == NULL) {
+      return 0;
+   }
+  
+   char * string;
+   typedef struct listLbl { char* content; struct listLbl* next; } list;
+  
+   list *myList = NULL;
+   list *newEntry;
+  
+   /*
+   Some of this is based off of code found in kismet (they claim it came from gkrellm).
+   Written for multi battery use...
+   */
+   for (pDirEnt= readdir((DIR*)batteryDir); pDirEnt; pDirEnt = readdir((DIR*)batteryDir)) {
+      string = (char*)pDirEnt->d_name;
+      if(!strcmp(string, ".") || !strcmp(string, ".."))
+         continue;
+    
+      newEntry = calloc(1, sizeof(list));
+      newEntry->next = myList;
+      newEntry->content = string;
+      myList = newEntry;
+   }
+
+   unsigned long int total = 0;
+   for (newEntry = myList; newEntry; newEntry = newEntry->next) {
+      const char infoPath[30];
+      const FILE * file;
+      char line[50];  
+    
+      sprintf((char*)infoPath, "%s%s/%s", batteryPath, newEntry->content, fileName);
+    
+      if ((file = fopen(infoPath, "r")) == NULL) {
+         return 0;
+      }
+
+      for (unsigned short int i = 0; i < lineNum; i++){
+         fgets(line, sizeof line, (FILE*)file);
+      }
+    
+      fclose((FILE*)file);
+    
+      const char * foundNumTmp = String_getToken(line, wordNum);
+      const unsigned long int foundNum = atoi(foundNumTmp);
+      free((char*)foundNumTmp);
+
+      total += foundNum;
+   }
+
+   free(myList);
+   free(newEntry);
+   closedir((DIR*)batteryDir);
+   return total;
+}
+
+static void BatteryMeter_setValues(Meter* this, char* buffer, int len) {
+   FILE* file = fopen(PROCDIR "/acpi/ac_adapter/AC/state", "r");
+   if (!file)
+      file = fopen(PROCDIR "/acpi/ac_adapter/ADP1/state", "r");
+   if (!file) {
+      snprintf(buffer, len, "n/a");
+      return;
+   }  
+
+   char line [100];
+   fgets(line, sizeof line, file);
+   line[sizeof(line) - 1] = '\0';
+   fclose(file);
+
+   const unsigned long int totalFull = parseBatInfo("info", 3, 4);
+   const unsigned long int totalRemain = parseBatInfo("state", 5, 3);
+   const double percent = totalFull > 0 ? ((double)totalRemain * 100) / (double)totalFull : 0;
+   
+   if (totalFull == 0) {
+      snprintf(buffer, len, "n/a");
+      return;
+   }
+   
+   this->values[0] = percent;
+
+   const char* isOnline = String_getToken(line, 2);
+   
+   char *onAcText, *onBatteryText;
+   
+   if (this->mode == TEXT_METERMODE) {
+      onAcText = "%.1f%% (Running on A/C)";
+      onBatteryText = "%.1f%% (Running on battery)";
+   } else {
+      onAcText = "%.1f%%(A/C)";
+      onBatteryText = "%.1f%%(bat)";
+   }
+
+   if (strcmp(String_getToken(line, 2),"on-line") == 0) {
+      snprintf(buffer, len, onAcText, percent);
+   } else {
+      snprintf(buffer, len, onBatteryText, percent); 
+   }
+
+   free((char*)isOnline);
+   return;
+}
+
+MeterType BatteryMeter = {
+   .setValues = BatteryMeter_setValues, 
+   .display = NULL,
+   .mode = TEXT_METERMODE,
+   .items = 1,
+   .total = 100.0,
+   .attributes = BatteryMeter_attributes,
+   .name = "Battery",
+   .uiName = "Battery",
+   .caption = "Battery: "
+};

CRT.c

@@ -56,6 +56,7 @@ typedef enum ColorElements_ {
    METER_VALUE,
    LED_COLOR,
    UPTIME,
+   BATTERY,
    TASKS_TOTAL,
    TASKS_RUNNING,
    SWAP,
@@ -216,6 +217,7 @@ void CRT_setColors(int colorScheme) {
       CRT_colors[PANEL_HIGHLIGHT_UNFOCUS] = A_BOLD;
       CRT_colors[FAILED_SEARCH] = A_REVERSE | A_BOLD;
       CRT_colors[UPTIME] = A_BOLD;
+      CRT_colors[BATTERY] = A_BOLD;
       CRT_colors[LARGE_NUMBER] = A_BOLD;
       CRT_colors[METER_TEXT] = A_NORMAL;
       CRT_colors[METER_VALUE] = A_BOLD;
@@ -273,6 +275,7 @@ void CRT_setColors(int colorScheme) {
       CRT_colors[PANEL_HIGHLIGHT_UNFOCUS] = ColorPair(Blue,White);
       CRT_colors[FAILED_SEARCH] = ColorPair(Red,Cyan);
       CRT_colors[UPTIME] = ColorPair(Yellow,White);
+      CRT_colors[BATTERY] = ColorPair(Yellow,White);
       CRT_colors[LARGE_NUMBER] = ColorPair(Red,White);
       CRT_colors[METER_TEXT] = ColorPair(Blue,White);
       CRT_colors[METER_VALUE] = ColorPair(Black,White);
@@ -330,6 +333,7 @@ void CRT_setColors(int colorScheme) {
       CRT_colors[PANEL_HIGHLIGHT_UNFOCUS] = ColorPair(Blue,Black);
       CRT_colors[FAILED_SEARCH] = ColorPair(Red,Cyan);
       CRT_colors[UPTIME] = ColorPair(Yellow,Black);
+      CRT_colors[BATTERY] = ColorPair(Yellow,Black);
       CRT_colors[LARGE_NUMBER] = ColorPair(Red,Black);
       CRT_colors[METER_TEXT] = ColorPair(Blue,Black);
       CRT_colors[METER_VALUE] = ColorPair(Black,Black);
@@ -387,6 +391,7 @@ void CRT_setColors(int colorScheme) {
       CRT_colors[PANEL_HIGHLIGHT_UNFOCUS] = A_BOLD | ColorPair(Yellow,Blue);
       CRT_colors[FAILED_SEARCH] = ColorPair(Red,Cyan);
       CRT_colors[UPTIME] = A_BOLD | ColorPair(Yellow,Blue);
+      CRT_colors[BATTERY] = A_BOLD | ColorPair(Yellow,Blue);
       CRT_colors[LARGE_NUMBER] = A_BOLD | ColorPair(Red,Blue);
       CRT_colors[METER_TEXT] = ColorPair(Cyan,Blue);
       CRT_colors[METER_VALUE] = A_BOLD | ColorPair(Cyan,Blue);
@@ -444,6 +449,7 @@ void CRT_setColors(int colorScheme) {
       CRT_colors[PANEL_HIGHLIGHT_UNFOCUS] = ColorPair(Black,White);
       CRT_colors[FAILED_SEARCH] = ColorPair(Red,Cyan);
       CRT_colors[UPTIME] = ColorPair(Green,Black);
+      CRT_colors[BATTERY] = ColorPair(Green,Black);
       CRT_colors[LARGE_NUMBER] = A_BOLD | ColorPair(Red,Black);
       CRT_colors[METER_TEXT] = ColorPair(Cyan,Black);
       CRT_colors[METER_VALUE] = ColorPair(Green,Black);
@@ -502,6 +508,7 @@ void CRT_setColors(int colorScheme) {
       CRT_colors[PANEL_HIGHLIGHT_UNFOCUS] = ColorPair(Black,White);
       CRT_colors[FAILED_SEARCH] = ColorPair(Red,Cyan);
       CRT_colors[UPTIME] = A_BOLD | ColorPair(Cyan,Black);
+      CRT_colors[BATTERY] = A_BOLD | ColorPair(Cyan,Black);
       CRT_colors[LARGE_NUMBER] = A_BOLD | ColorPair(Red,Black);
       CRT_colors[METER_TEXT] = ColorPair(Cyan,Black);
       CRT_colors[METER_VALUE] = A_BOLD | ColorPair(Cyan,Black);

CRT.h

@@ -58,6 +58,7 @@ typedef enum ColorElements_ {
    METER_VALUE,
    LED_COLOR,
    UPTIME,
+   BATTERY,
    TASKS_TOTAL,
    TASKS_RUNNING,
    SWAP,

ChangeLog

@@ -2,7 +2,11 @@
 What's new in version 0.8.1
 
 * Linux-VServer support
- (thanks to Jonathan Sambrook and Benedikt Bohm)
+  (thanks to Jonathan Sambrook and Benedikt Bohm)
+* Battery meter
+  (thanks to Ian Page Hands)
+* BUGFIX: Fix collection of IO stats in multithreaded processes
+  (thanks to Gerhard Heift)
 
 What's new in version 0.8
 

Makefile.am

@@ -17,7 +17,7 @@ myhtopsources = AvailableMetersPanel.c CategoriesPanel.c CheckItem.c \
 ClockMeter.c ColorsPanel.c ColumnsPanel.c CPUMeter.c CRT.c DebugMemory.c \
 DisplayOptionsPanel.c FunctionBar.c Hashtable.c Header.c htop.c ListItem.c \
 LoadAverageMeter.c MemoryMeter.c Meter.c MetersPanel.c Object.c Panel.c \
-Process.c ProcessList.c RichString.c ScreenManager.c Settings.c \
+BatteryMeter.c Process.c ProcessList.c RichString.c ScreenManager.c Settings.c \
 SignalItem.c SignalsPanel.c String.c SwapMeter.c TasksMeter.c TraceScreen.c \
 UptimeMeter.c UsersTable.c Vector.c AvailableColumnsPanel.c AffinityPanel.c
 
@@ -25,7 +25,7 @@ myhtopheaders = AvailableColumnsPanel.h AvailableMetersPanel.h \
 CategoriesPanel.h CheckItem.h ClockMeter.h ColorsPanel.h ColumnsPanel.h \
 CPUMeter.h CRT.h DebugMemory.h DisplayOptionsPanel.h FunctionBar.h \
 Hashtable.h Header.h htop.h ListItem.h LoadAverageMeter.h MemoryMeter.h \
-Meter.h MetersPanel.h Object.h Panel.h ProcessList.h RichString.h \
+BatteryMeter.h Meter.h MetersPanel.h Object.h Panel.h ProcessList.h RichString.h \
 ScreenManager.h Settings.h SignalItem.h SignalsPanel.h String.h \
 SwapMeter.h TasksMeter.h TraceScreen.h UptimeMeter.h UsersTable.h Vector.h \
 Process.h AffinityPanel.h

Meter.c

@@ -96,8 +96,10 @@ typedef enum {
 #include "TasksMeter.h"
 #include "LoadAverageMeter.h"
 #include "UptimeMeter.h"
+#include "BatteryMeter.h"
 #include "ClockMeter.h"
 
+
 #ifndef MIN
 #define MIN(a,b) ((a)<(b)?(a):(b))
 #endif
@@ -120,6 +122,7 @@ MeterType* Meter_types[] = {
    &SwapMeter,
    &TasksMeter,
    &UptimeMeter,
+   &BatteryMeter,
    &AllCPUsMeter,
    NULL
 };
@@ -242,8 +245,8 @@ static void BarMeterMode_draw(Meter* this, int x, int y, int w) {
 
    w -= 2;
    attrset(CRT_colors[METER_TEXT]);
-   mvaddstr(y, x, this->caption);
-   int captionLen = strlen(this->caption);
+   int captionLen = 3;
+   mvaddnstr(y, x, this->caption, captionLen);
    x += captionLen;
    w -= captionLen;
    attrset(CRT_colors[BAR_BORDER]);

Meter.h

@@ -97,8 +97,10 @@ typedef enum {
 #include "TasksMeter.h"
 #include "LoadAverageMeter.h"
 #include "UptimeMeter.h"
+#include "BatteryMeter.h"
 #include "ClockMeter.h"
 
+
 #ifndef MIN
 #define MIN(a,b) ((a)<(b)?(a):(b))
 #endif

String.c

@@ -103,3 +103,30 @@ int String_contains_i(char* s, char* match) {
    }
    return 0;
 }
+
+char* String_getToken(const char* line, const unsigned short int numMatch) {
+   const unsigned short int len = strlen(line);
+   char inWord = 0;
+   unsigned short int count = 0;
+   char match[50];
+
+   unsigned short int foundCount = 0;
+
+   for (unsigned short int i = 0; i < len; i++) {
+      char lastState = inWord;
+      inWord = line[i] == ' ' ? 0:1;
+
+      if (lastState == 0 && inWord == 1)
+         count++;
+    
+      if(inWord == 1){
+         if (count == numMatch && line[i] != ' ' && line[i] != '\0' && line[i] != '\n' && line[i] != EOF) {
+            match[foundCount] = line[i];
+            foundCount++;
+         }
+      }
+   }
+
+   match[foundCount] = '\0';
+   return((char*)strdup(match));
+}

String.h

@@ -33,4 +33,6 @@ void String_freeArray(char** s);
 
 int String_contains_i(char* s, char* match);
 
+char* String_getToken(const char* line, const unsigned short int numMatch);
+
 #endif

configure.ac

@@ -2,7 +2,7 @@
 # Process this file with autoconf to produce a configure script.
 
 AC_PREREQ(2.57)
-AC_INIT([htop],[0.8],[loderunner@users.sourceforge.net])
+AC_INIT([htop],[0.8.1],[loderunner@users.sourceforge.net])
 AM_INIT_AUTOMAKE
 AC_CONFIG_SRCDIR([htop.c])
 AC_CONFIG_HEADER([config.h])