56 lines
922 B
C
56 lines
922 B
C
char *
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readfile(char *base, char *file)
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{
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char *path, line[513];
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FILE *fd;
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memset(line, 0, sizeof(line));
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path = smprintf("%s/%s", base, file);
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fd = fopen(path, "r");
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if (fd == NULL) {
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perror("fopen");
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exit(1);
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}
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free(path);
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if (fgets(line, sizeof(line)-1, fd) == NULL) {
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perror("fgets");
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exit(1);
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}
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fclose(fd);
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return smprintf("%s", line);
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}
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char *
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getbattery(char *base)
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{
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char *co;
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int descap, remcap;
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descap = -1;
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remcap = -1;
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co = readfile(base, "present");
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if (co[0] != '1') {
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free(co);
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return smprintf("not present");
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}
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free(co);
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co = readfile(base, "charge_full_design");
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sscanf(co, "%d", &descap);
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free(co);
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co = readfile(base, "charge_now");
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sscanf(co, "%d", &remcap);
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free(co);
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if (remcap < 0 || descap < 0)
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return smprintf("invalid");
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return smprintf("%.0f", ((float)remcap / (float)descap) * 100);
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}
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