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CrunchBang Linux Pastebin

Posted by 1esproc on Tue 20th Jan 06:22 (modification of post by 1esproc view diff)
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  1. // Based on http://crunchbanglinux.org/pastebin/98
  2. // Converted by 1esproc
  3. // i'm tired (that's my excuse for the prev. vers) :P
  4.  
  5. #include <stdio.h>
  6. #include <string.h>
  7. #include <malloc.h>
  8.  
  9. int main(int argc, char *argv[]) {
  10.  
  11.   FILE *fp;
  12.  
  13.   float rate, voltage, wdrawn, adrawn;
  14.   char *battery, *path, *substr, *substr_e;
  15.   char line[256];
  16.   int blen;
  17.  
  18.   rate = voltage = wdrawn = adrawn = 0.0;
  19.   bzero(line, 256);
  20.  
  21.   if (argc < 2) {
  22.     battery = malloc(5);
  23.     strncpy(battery, "BAT0", 5);
  24.     blen = 5;
  25.   } else {
  26.     if ((blen = strlen(argv[1])) > 8) {
  27.       printf("Bad Name");
  28.       return -1;
  29.     } else {
  30.       battery = malloc(blen+1);
  31.       strncpy(battery, argv[1], blen+1);
  32.     }
  33.   }
  34.  
  35.   path = malloc(26 + blen);
  36.   strncpy(path, "/proc/acpi/battery/", 20);
  37.   strncat(path, battery, blen);
  38.   strncat(path, "/state", 6);
  39.  
  40.   if ((fp = fopen(path, "r")) == NULL) {
  41.       printf("No Data");
  42.       return -1;
  43.   } else {
  44.     while (!feof(fp)) {
  45.       if (fgets(line, 256, fp)) {
  46.         if (strstr(line, "charging state") != NULL) {
  47.           if (strstr(line, "discharging") == NULL) {
  48.             printf("No Data");
  49.             return -1;
  50.           }
  51.         } else if ((substr = strstr(line, "present voltage")) != NULL) {
  52.           substr += 17;
  53.           substr_e = strchr(substr, ' ');
  54.           *substr_e = '\0';
  55.           voltage = atoi(substr) / 1000;
  56.         } else if ((substr = strstr(line, "present rate")) != NULL) {
  57.           substr += 14;
  58.           substr_e = strchr(substr, ' ');
  59.           if (strstr(line, "mW") != NULL) {
  60.             *substr_e = '\0';
  61.             wdrawn = atoi(substr) / 1000;
  62.           } else if (strstr(line, "mA") != NULL) {
  63.             *substr_e = '\0';
  64.             adrawn = atoi(substr) / 1000;
  65.           }
  66.         }
  67.       }
  68.     }
  69.     fclose(fp);
  70.     rate = wdrawn + voltage * adrawn;
  71.     printf("%.2f", rate);
  72.   }
  73.  
  74.   return 0;
  75. }

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