Fork into gluhncheckHEAD1.0master

Signed-off-by: Mattias Andrée <m@maandree.se>

1 files changed, 0 insertions, 81 deletions

diff --git a/luhncheck.c b/luhncheck.c
deleted file mode 100644
index 51f04ab..0000000
--- a/luhncheck.c
+++ /dev/null
@@ -1,81 +0,0 @@
-/* See LICENSE file for copyright and license details. */
-#include <libsimple-arg.h>
-#include <errno.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-
-NUSAGE(2, "number ...");
-
-
-static int
-check_luhn(const char *s)
-{
-	unsigned sum = 0;
-
-	switch (strlen(s) & 1U) {
-		for (;;) {
-		case 0:
-			if ('0' <= *s && *s <= '4')
-				sum += 2U * (unsigned)(*s - '0');
-			else if ('5' <= *s && *s <= '9')
-				sum += 2U * (unsigned)(*s - '0') - 9U;
-			else if (*s)
-				return 0;
-			else
-				break;
-			s++;
-
-		case 1:
-			if ('0' <= *s && *s <= '9')
-				sum += (unsigned)(*s - '0');
-			else if (*s)
-				return 0;
-			else
-				break;
-			s++;
-
-			sum %= 10U;
-		}
-	}
-
-	return (sum % 10U) == 0U;
-}
-
-
-int
-main(int argc, char *argv[])
-{
-	int use_colour;
-	int ret = 0;
-	int r, ok;
-
-	ARGBEGIN {
-	default:
-		usage();
-	} ARGEND;
-
-	if (!argc)
-		usage();
-
-	use_colour = isatty(STDOUT_FILENO);
-
-	for (; *argv; argv++) {
-		ok = check_luhn(*argv);
-		ret |= !ok;
-		r = printf("%s%s %s%s\n", use_colour ? ok ? "\033[1;32m" : "\033[1;31m" : "",
-		           *argv, ok ? "is OK" : "is invalid", use_colour ? "\033[m" : "");
-		if (r < 0) {
-			fprintf(stderr, "%s: printf: %s\n", argv0, strerror(errno));
-			exit(2);
-		}
-	}
-
-	if (fflush(stdout) || fclose(stdout)) {
-		fprintf(stderr, "%s: printf: %s\n", argv0, strerror(errno));
-		exit(2);
-	}
-
-	return ret;
-}