diff options
Diffstat (limited to 'toys/posix/cksum.c')
| -rw-r--r-- | toys/posix/cksum.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/toys/posix/cksum.c b/toys/posix/cksum.c index 9f6aa42b..60edc091 100644 --- a/toys/posix/cksum.c +++ b/toys/posix/cksum.c @@ -4,7 +4,7 @@ * * See http://opengroup.org/onlinepubs/9699919799/utilities/cksum.html -USE_CKSUM(NEWTOY(cksum, "IPLN", TOYFLAG_BIN)) +USE_CKSUM(NEWTOY(cksum, "HIPLN", TOYFLAG_BIN)) config CKSUM bool "cksum" @@ -15,6 +15,7 @@ config CKSUM For each file, output crc32 checksum value, length and name of file. If no files listed, copy from stdin. Filename "-" is a synonym for stdin. + -H Hexadecimal checksum (defaults to decimal) -L Little endian (defaults to big endian) -P Pre-inversion -I Skip post-inversion @@ -40,11 +41,11 @@ static unsigned cksum_le(unsigned crc, unsigned char c) static void do_cksum(int fd, char *name) { - unsigned crc = (toys.optflags&4) ? 0xffffffff : 0; + unsigned crc = (toys.optflags & FLAG_P) ? 0xffffffff : 0; uint64_t llen = 0, llen2; unsigned (*cksum)(unsigned crc, unsigned char c); - cksum = (toys.optflags&2) ? cksum_le : cksum_be; + cksum = (toys.optflags & FLAG_L) ? cksum_le : cksum_be; // CRC the data for (;;) { @@ -61,20 +62,22 @@ static void do_cksum(int fd, char *name) // CRC the length llen2 = llen; - if (!(toys.optflags&1)) { + if (!(toys.optflags & FLAG_N)) { while (llen) { crc = cksum(crc, llen); llen >>= 8; } } - printf("%u %"PRIu64, (toys.optflags&8) ? crc : ~crc, llen2); + printf((toys.optflags & FLAG_H) ? "%x" : "%u", + (toys.optflags & FLAG_I) ? crc : ~crc); + printf(" %"PRIu64, llen2); if (strcmp("-", name)) printf(" %s", name); xputc('\n'); } void cksum_main(void) { - crc_init(TT.crc_table, toys.optflags&2); + crc_init(TT.crc_table, toys.optflags & FLAG_L); loopfiles(toys.optargs, do_cksum); } |