74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
// vim:ts=8:expandtab
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ctype.h>
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#include <stdint.h>
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#include <sys/statvfs.h>
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#include <sys/types.h>
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#include "i3status.h"
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#define TERABYTE (1024ULL * 1024 * 1024 * 1024)
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#define GIGABYTE (1024ULL * 1024 * 1024)
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#define MEGABYTE (1024ULL * 1024)
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#define KILOBYTE (1024ULL)
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/*
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* Prints the given amount of bytes in a human readable manner.
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*
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*/
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static void print_bytes_human(uint64_t bytes) {
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if (bytes > TERABYTE)
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printf("%.02f TB", (double)bytes / TERABYTE);
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else if (bytes > GIGABYTE)
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printf("%.01f GB", (double)bytes / GIGABYTE);
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else if (bytes > MEGABYTE)
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printf("%.01f MB", (double)bytes / MEGABYTE);
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else if (bytes > KILOBYTE)
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printf("%.01f KB", (double)bytes / KILOBYTE);
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else {
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printf("%.01f B", (double)bytes);
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}
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}
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/*
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* Does a statvfs and prints either free, used or total amounts of bytes in a
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* human readable manner.
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*
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*/
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void print_disk_info(const char *path, const char *format) {
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const char *walk;
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struct statvfs buf;
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if (statvfs(path, &buf) == -1)
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return;
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for (walk = format; *walk != '\0'; walk++) {
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if (*walk != '%') {
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putchar(*walk);
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continue;
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}
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if (BEGINS_WITH(walk+1, "free")) {
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print_bytes_human((uint64_t)buf.f_bsize * (uint64_t)buf.f_bfree);
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walk += strlen("free");
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}
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if (BEGINS_WITH(walk+1, "used")) {
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print_bytes_human((uint64_t)buf.f_bsize * ((uint64_t)buf.f_blocks - (uint64_t)buf.f_bfree));
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walk += strlen("used");
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}
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if (BEGINS_WITH(walk+1, "total")) {
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print_bytes_human((uint64_t)buf.f_bsize * (uint64_t)buf.f_blocks);
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walk += strlen("total");
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}
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if (BEGINS_WITH(walk+1, "avail")) {
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print_bytes_human((uint64_t)buf.f_bsize * (uint64_t)buf.f_bavail);
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walk += strlen("avail");
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}
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}
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}
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