mirror of
https://gitlab.freedesktop.org/NetworkManager/NetworkManager.git
synced 2025-12-30 00:20:11 +01:00
71 lines
2.9 KiB
C
71 lines
2.9 KiB
C
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/* SPDX-License-Identifier: LGPL-2.1+ */
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#include <stdio.h>
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#include "format-util.h"
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#include "memory-util.h"
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char *format_ifname(int ifindex, char buf[static IF_NAMESIZE + 1]) {
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/* Buffer is always cleared */
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memzero(buf, IF_NAMESIZE + 1);
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return if_indextoname(ifindex, buf);
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}
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char *format_bytes_full(char *buf, size_t l, uint64_t t, FormatBytesFlag flag) {
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typedef struct {
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const char *suffix;
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uint64_t factor;
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} suffix_table;
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static const suffix_table table_iec[] = {
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{ "E", UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024) },
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{ "P", UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024) },
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{ "T", UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024) },
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{ "G", UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024) },
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{ "M", UINT64_C(1024)*UINT64_C(1024) },
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{ "K", UINT64_C(1024) },
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}, table_si[] = {
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{ "E", UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000) },
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{ "P", UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000) },
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{ "T", UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000) },
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{ "G", UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000) },
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{ "M", UINT64_C(1000)*UINT64_C(1000) },
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{ "K", UINT64_C(1000) },
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};
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const suffix_table *table;
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size_t n, i;
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assert_cc(ELEMENTSOF(table_iec) == ELEMENTSOF(table_si));
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if (t == (uint64_t) -1)
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return NULL;
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table = flag & FORMAT_BYTES_USE_IEC ? table_iec : table_si;
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n = ELEMENTSOF(table_iec);
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for (i = 0; i < n; i++)
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if (t >= table[i].factor) {
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if (flag & FORMAT_BYTES_BELOW_POINT) {
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snprintf(buf, l,
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"%" PRIu64 ".%" PRIu64 "%s",
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t / table[i].factor,
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i != n - 1 ?
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(t / table[i + 1].factor * UINT64_C(10) / table[n - 1].factor) % UINT64_C(10):
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(t * UINT64_C(10) / table[i].factor) % UINT64_C(10),
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table[i].suffix);
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} else
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snprintf(buf, l,
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"%" PRIu64 "%s",
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t / table[i].factor,
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table[i].suffix);
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goto finish;
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}
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snprintf(buf, l, "%" PRIu64 "%s", t, flag & FORMAT_BYTES_TRAILING_B ? "B" : "");
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finish:
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buf[l-1] = 0;
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return buf;
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}
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