| 1 | char * |
| 2 | readfile(char *base, char *file) |
| 3 | { |
| 4 | char *path, line[513]; |
| 5 | FILE *fd; |
| 6 | |
| 7 | memset(line, 0, sizeof(line)); |
| 8 | |
| 9 | path = smprintf("%s/%s", base, file); |
| 10 | fd = fopen(path, "r"); |
| 11 | if (fd == NULL) { |
| 12 | perror("fopen"); |
| 13 | exit(1); |
| 14 | } |
| 15 | free(path); |
| 16 | |
| 17 | if (fgets(line, sizeof(line)-1, fd) == NULL) { |
| 18 | perror("fgets"); |
| 19 | exit(1); |
| 20 | } |
| 21 | fclose(fd); |
| 22 | |
| 23 | return smprintf("%s", line); |
| 24 | } |
| 25 | |
| 26 | char * |
| 27 | getbattery(char *base) |
| 28 | { |
| 29 | char *co; |
| 30 | int descap, remcap; |
| 31 | |
| 32 | descap = -1; |
| 33 | remcap = -1; |
| 34 | |
| 35 | co = readfile(base, "present"); |
| 36 | if (co[0] != '1') { |
| 37 | free(co); |
| 38 | return smprintf("not present"); |
| 39 | } |
| 40 | free(co); |
| 41 | |
| 42 | co = readfile(base, "charge_full_design"); |
| 43 | sscanf(co, "%d", &descap); |
| 44 | free(co); |
| 45 | |
| 46 | co = readfile(base, "charge_now"); |
| 47 | sscanf(co, "%d", &remcap); |
| 48 | free(co); |
| 49 | |
| 50 | if (remcap < 0 || descap < 0) |
| 51 | return smprintf("invalid"); |
| 52 | |
| 53 | return smprintf("%.0f", ((float)remcap / (float)descap) * 100); |
| 54 | } |
| 55 | |