rename utils to posix

[pdutils] / utils / cksum / cksum.c

diff --git a/utils/cksum/cksum.c b/utils/cksum/cksum.c
deleted file mode 100644 (file)
index daba540..0000000
--- a/utils/cksum/cksum.c
+++ /dev/null
@@ -1,115 +0,0 @@
-/*
- * cksum - report checksum and octet count of file(s)
- *
- * Version: 2008-1.01
- * Build:   c89 -o cksum cksum.c
- * Source:  <http://pdcore.sourceforge.net/>
- * Spec:    <http://www.opengroup.org/onlinepubs/9699919799/utilities/cksum.html>
- *
- * This is free and unencumbered software released into the public domain,
- * provided "as is", without warranty of any kind, express or implied. See the
- * file UNLICENSE and the website <http://unlicense.org> for further details.
- */
-
-
-#define _POSIX_SOURCE
-
-#include <errno.h>
-#include <fcntl.h>
-#include <inttypes.h>
-#include <locale.h>
-#include <stdio.h>
-#include <string.h>
-#include <sys/types.h>
-#include <unistd.h>
-
-#define BUFSIZE 4096
-
-static void cksumfile(int fd, char *fn);
-static void error(char *s);
-
-static int exitstatus;
-
-
-int main(int argc, char **argv)
-{
-    int i, fd, hasrun = 0;
-    char *fn;
-
-    setlocale(LC_ALL, "");
-
-    for (i = 1; i < argc; i++)
-    {
-        fn = argv[i];
-
-        if (strcmp(fn, "--") == 0)
-            continue;
-        else
-        {
-            hasrun = 1;
-
-            if (strcmp(fn, "-") == 0)
-                cksumfile(STDIN_FILENO, "stdin");
-            else
-                if ((fd = open(fn, O_RDONLY)) == -1)
-                    error(fn);
-                else
-                {
-                    cksumfile(fd, fn);
-                    if (close(fd) == -1)
-                        error(fn);
-                }
-        }
-    }
-
-    if (! hasrun)
-        cksumfile(STDIN_FILENO, "stdin");
-
-    return(exitstatus);
-}
-
-
-void cksumfile(int fd, char *fn)
-{
-    unsigned char buf[BUFSIZE];
-    ssize_t cnt, n;
-    uint32_t crctab[256], crc, i;
-    int j;
-
-    for (i = 0; i < 256; ++i)
-    {
-        for (crc = i << 24, j = 0; j < 8; j++)
-            crc = (crc << 1) ^ (crc & 0x80000000 ? 0x04c11db7 : 0);
-        crctab[i] = crc;
-    }
-
-    cnt = crc = 0;
-
-    while ((n = read(fd, buf, BUFSIZE)) > 0)
-    {
-        cnt += n;
-
-        for (i = 0; i < (size_t)n; i++)
-            crc = crctab[((crc >> 24) ^ buf[i]) & 0xFF] ^ (crc << 8);
-    }
-
-    if (n < 0)
-        error(fn);
-    else
-    {
-        for (i = cnt; i != 0; i >>= 8)
-            crc = crctab[((crc >> 24) ^ i) & 0xFF] ^ (crc << 8);
-
-        printf("%lu %lu", (unsigned long)~crc, (unsigned long)cnt);
-        if (fd != STDIN_FILENO)
-            printf(" %s", fn);
-        printf("\n");
-    }
-}
-
-
-void error(char *s)
-{
-    fprintf(stderr, "cksum: %s: %s\n", s, strerror(errno));
-    exitstatus = 1;
-}