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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 13:00:47 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 13:00:47 +0000 |
commit | 2cb7e0aaedad73b076ea18c6900b0e86c5760d79 (patch) | |
tree | da68ca54bb79f4080079bf0828acda937593a4e1 /src/basic/format-util.c | |
parent | Initial commit. (diff) | |
download | systemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.tar.xz systemd-2cb7e0aaedad73b076ea18c6900b0e86c5760d79.zip |
Adding upstream version 247.3.upstream/247.3upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r-- | src/basic/format-util.c | 81 |
1 files changed, 81 insertions, 0 deletions
diff --git a/src/basic/format-util.c b/src/basic/format-util.c new file mode 100644 index 0000000..bf23037 --- /dev/null +++ b/src/basic/format-util.c @@ -0,0 +1,81 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "format-util.h" +#include "memory-util.h" +#include "stdio-util.h" + +assert_cc(DECIMAL_STR_MAX(int) + 1 <= IF_NAMESIZE + 1); +char *format_ifname_full(int ifindex, char buf[static IF_NAMESIZE + 1], FormatIfnameFlag flag) { + /* Buffer is always cleared */ + memzero(buf, IF_NAMESIZE + 1); + if (if_indextoname(ifindex, buf)) + return buf; + + if (!FLAGS_SET(flag, FORMAT_IFNAME_IFINDEX)) + return NULL; + + if (FLAGS_SET(flag, FORMAT_IFNAME_IFINDEX_WITH_PERCENT)) + snprintf(buf, IF_NAMESIZE + 1, "%%%d", ifindex); + else + snprintf(buf, IF_NAMESIZE + 1, "%d", ifindex); + + return buf; +} + +char *format_bytes_full(char *buf, size_t l, uint64_t t, FormatBytesFlag flag) { + typedef struct { + const char *suffix; + uint64_t factor; + } suffix_table; + static const suffix_table table_iec[] = { + { "E", UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024) }, + { "P", UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024) }, + { "T", UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024) }, + { "G", UINT64_C(1024)*UINT64_C(1024)*UINT64_C(1024) }, + { "M", UINT64_C(1024)*UINT64_C(1024) }, + { "K", UINT64_C(1024) }, + }, table_si[] = { + { "E", UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000) }, + { "P", UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000) }, + { "T", UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000) }, + { "G", UINT64_C(1000)*UINT64_C(1000)*UINT64_C(1000) }, + { "M", UINT64_C(1000)*UINT64_C(1000) }, + { "K", UINT64_C(1000) }, + }; + const suffix_table *table; + size_t n, i; + + assert_cc(ELEMENTSOF(table_iec) == ELEMENTSOF(table_si)); + + if (t == (uint64_t) -1) + return NULL; + + table = flag & FORMAT_BYTES_USE_IEC ? table_iec : table_si; + n = ELEMENTSOF(table_iec); + + for (i = 0; i < n; i++) + if (t >= table[i].factor) { + if (flag & FORMAT_BYTES_BELOW_POINT) { + snprintf(buf, l, + "%" PRIu64 ".%" PRIu64 "%s", + t / table[i].factor, + i != n - 1 ? + (t / table[i + 1].factor * UINT64_C(10) / table[n - 1].factor) % UINT64_C(10): + (t * UINT64_C(10) / table[i].factor) % UINT64_C(10), + table[i].suffix); + } else + snprintf(buf, l, + "%" PRIu64 "%s", + t / table[i].factor, + table[i].suffix); + + goto finish; + } + + snprintf(buf, l, "%" PRIu64 "%s", t, flag & FORMAT_BYTES_TRAILING_B ? "B" : ""); + +finish: + buf[l-1] = 0; + return buf; + +} |