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// vim:ts=8:expandtab
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdint.h>
#include <sys/statvfs.h>
#include <sys/types.h>
#include "i3status.h"
#define TERABYTE (1024ULL * 1024 * 1024 * 1024)
#define GIGABYTE (1024ULL * 1024 * 1024)
#define MEGABYTE (1024ULL * 1024)
#define KILOBYTE (1024ULL)
/*
* Prints the given amount of bytes in a human readable manner.
*
*/
static void print_bytes_human(uint64_t bytes) {
if (bytes > TERABYTE)
printf("%f TB", (double)bytes / TERABYTE);
else if (bytes > GIGABYTE)
printf("%.01f GB", (double)bytes / GIGABYTE);
else if (bytes > MEGABYTE)
printf("%.01f MB", (double)bytes / MEGABYTE);
else if (bytes > KILOBYTE)
printf("%.01f KB", (double)bytes / KILOBYTE);
else {
printf("%.01f B", (double)bytes);
}
}
/*
* Does a statvfs and prints either free, used or total amounts of bytes in a
* human readable manner.
*
*/
void print_disk_info(const char *path, const char *format) {
const char *walk;
struct statvfs buf;
if (statvfs(path, &buf) == -1)
return;
for (walk = format; *walk != '\0'; walk++) {
if (*walk != '%') {
putchar(*walk);
continue;
}
if (BEGINS_WITH(walk+1, "free")) {
print_bytes_human((uint64_t)buf.f_bsize * (uint64_t)buf.f_bfree);
walk += strlen("free");
}
if (BEGINS_WITH(walk+1, "used")) {
print_bytes_human((uint64_t)buf.f_bsize * ((uint64_t)buf.f_blocks - (uint64_t)buf.f_bfree));
walk += strlen("used");
}
if (BEGINS_WITH(walk+1, "total")) {
print_bytes_human((uint64_t)buf.f_bsize * (uint64_t)buf.f_blocks);
walk += strlen("total");
}
}
}
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