Muldersoft/CRC-64
Muldersoft/CRC-64
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Added support for the "--append-length" option.

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This commit is contained in:
LoRd_MuldeR 2022-09-19 21:41:32 +02:00
parent 70132c3ac1
commit 06ae68eaea
1 changed files with 38 additions and 14 deletions
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52
crc64.c
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@ -29,20 +29,21 @@
static const int VERSION_MAJOR = 1;
static const int VERSION_MINOR = 0;
static const int VERSION_PATCH = 2;
static const int VERSION_PATCH = 3;
#define OPT_HELPSC 0x001
#define OPT_VERSNO 0x002
#define OPT_BINARY 0x004
#define OPT_UPPERC 0x008
#define OPT_DECIML 0x010
#define OPT_NOPADD 0x020
#define OPT_IGNERR 0x040
#define OPT_SILENT 0x080
#define OPT_NOFLSH 0x100
#define OPT_ZEROIN 0x200
#define OPT_NEGATE 0x400
#define OPT_SLFTST 0x800
#define OPT_HELPSC 0x0001
#define OPT_VERSNO 0x0002
#define OPT_BINARY 0x0004
#define OPT_UPPERC 0x0008
#define OPT_DECIML 0x0010
#define OPT_NOPADD 0x0020
#define OPT_IGNERR 0x0040
#define OPT_SILENT 0x0080
#define OPT_NOFLSH 0x0100
#define OPT_ZEROIN 0x0200
#define OPT_NEGATE 0x0400
#define OPT_LENGTH 0x0800
#define OPT_SLFTST 0x1000
/* ======================================================================== */
/* Compiler */
@ -238,6 +239,20 @@ static int is_directory(FILE *const file)
return 0;
}
/* ======================================================================== */
/* Store 64-Bit value (LE) */
/* ======================================================================== */
static size_t store_uint64(uint64_t value, uint8_t *const buffer)
{
size_t count = 0U;
for (; value; value >>= 8)
{
buffer[count++] = value & 0xFF;
}
return count;
}
/* ======================================================================== */
/* Process File */
/* ======================================================================== */
@ -306,6 +321,12 @@ static int process_file(const CHAR *const file_name, const int options)
}
}
if (total_size && (options & OPT_LENGTH))
{
const size_t count = store_uint64(total_size, buffer);
crc = crc64_update(crc, buffer, count);
}
if (options & OPT_NEGATE)
{
crc = ~crc;
@ -388,6 +409,7 @@ static const struct
CRC64_TESTCASE[] =
{
{ { 0xffffffffffffffffULL, 0x0000000000000000ULL }, 0x0000001, "" },
{ { 0x9d13a61c0e5b0ff5ULL, 0x6c40df5f0b497347ULL }, 0x0000001, "123456789" },
{ { 0xfb747ec5060b68fdULL, 0x66501a349a0e0855ULL }, 0x0000001, "abc" },
{ { 0xe48092e3bf0112faULL, 0x29d18301fe33ca5dULL }, 0x0000001, "abcdbcdecdefdefgefghfghighijhijkijkljklmklmnlmnomnopnopq" },
{ { 0x763e5273763ec641ULL, 0x86751df1edd9a621ULL }, 0x0000001, "abcdefghbcdefghicdefghijdefghijkefghijklfghijklmghijklmnhijklmnoijklmnopjklmnopqklmnopqrlmnopqrsmnopqrstnopqrstu" },
@ -452,6 +474,7 @@ CLI_OPTION_NAMES[] =
{ T('f'), T("no-flush"), OPT_NOFLSH },
{ T('z'), T("init-with-zero"), OPT_ZEROIN },
{ T('n'), T("negate-final"), OPT_NEGATE },
{ T('l'), T("append-length"), OPT_LENGTH },
{ T('t'), T("self-test"), OPT_SLFTST }
};
@ -543,10 +566,11 @@ print_help:
FPUTS(T(" -u --upper-case Print digest as upper-case (default is lower-case)\n"), stderr);
FPUTS(T(" -p --no-padding Print digest *without* any leading zeros\n"), stderr);
FPUTS(T(" -s --silent Suppress error messages\n"), stderr);
FPUTS(T(" -e --ignore-errors Ignore I/O errors and proceeed with the next file\n"), stderr);
FPUTS(T(" -e --ignore-errors Ignore I/O errors and proceed with the next file\n"), stderr);
FPUTS(T(" -f --no-flush Do *not* flush output stream after each file\n"), stderr);
FPUTS(T(" -z --init-with-zero Initialize CRC with 0x000..000 (default is 0xFFF..FFF)\n"), stderr);
FPUTS(T(" -n --negate-final Negate the final CRC result\n"), stderr);
FPUTS(T(" -l --append-length Append to the input its length for CRC computation\n"), stderr);
FPUTS(T(" -t --self-test Run integrated self-test and exit program\n\n"), stderr);
}
return EXIT_SUCCESS;