inline strcmp(s, "-") [actually macro-ize it for now - gcc is too stupid]

coreutils/cut.c

@@ -168,6 +168,8 @@ int cut_main(int argc, char **argv)
 
 	opt_complementary = "b--bcf:c--bcf:f--bcf";
 	getopt32(argc, argv, optstring, &sopt, &sopt, &sopt, &ltok);
+//	argc -= optind;
+	argv += optind;
 	if (!(option_mask32 & (CUT_OPT_BYTE_FLGS | CUT_OPT_CHAR_FLGS | CUT_OPT_FIELDS_FLGS)))
 		bb_error_msg_and_die("expected a list of bytes, characters, or fields");
 	if (option_mask32 & BB_GETOPT_ERROR)
@@ -262,22 +264,21 @@ int cut_main(int argc, char **argv)
 		qsort(cut_lists, nlists, sizeof(struct cut_list), cmpfunc);
 	}
 
-	/* argv[(optind)..(argc-1)] should be names of file to process. If no
+	/* argv[0..argc-1] should be names of file to process. If no
 	 * files were specified or '-' was specified, take input from stdin.
 	 * Otherwise, we process all the files specified. */
-	if (argv[optind] == NULL
-		|| (argv[optind][0] == '-' && argv[optind][1] == '\0')) {
+	if (argv[0] == NULL || LONE_DASH(argv[0])) {
 		cut_file(stdin);
 	} else {
 		FILE *file;
 
-		for (; optind < argc; optind++) {
-			file = fopen_or_warn(argv[optind], "r");
+		do {
+			file = fopen_or_warn(argv[0], "r");
 			if (file) {
 				cut_file(file);
 				fclose(file);
 			}
-		}
+		} while (*++argv);
 	}
 	if (ENABLE_FEATURE_CLEAN_UP)
 		free(cut_lists);

coreutils/diff.c

@@ -904,19 +904,19 @@ static int diffreg(char *ofile1, char *ofile2, int flags)
 
 	if (S_ISDIR(stb1.st_mode) != S_ISDIR(stb2.st_mode))
 		return (S_ISDIR(stb1.st_mode) ? D_MISMATCH1 : D_MISMATCH2);
-	if (strcmp(file1, "-") == 0 && strcmp(file2, "-") == 0)
+	if (LONE_DASH(file1) && LONE_DASH(file2))
 		goto closem;
 
 	f1 = stdin;
 	if (flags & D_EMPTY1)
 		f1 = xfopen(bb_dev_null, "r");
-	else if (file1[0] != '-' || file1[1]) /* not "-" */
+	else if (NOT_LONE_DASH(file1))
 		f1 = xfopen(file1, "r");
 
 	f2 = stdin;
 	if (flags & D_EMPTY2)
 		f2 = xfopen(bb_dev_null, "r");
-	else if (file2[0] != '-' || file2[1]) /* not "-" */
+	else if (NOT_LONE_DASH(file2))
 		f2 = xfopen(file2, "r");
 
 	i = files_differ(f1, f2, flags);
@@ -1212,12 +1212,12 @@ int diff_main(int argc, char **argv)
 		bb_error_msg("missing filename");
 		bb_show_usage();
 	}
-	if (argv[0][0] == '-' && !argv[0][1]) { /* "-" */
+	if (LONE_DASH(argv[0])) {
 		fstat(STDIN_FILENO, &stb1);
 		gotstdin = 1;
 	} else
 		xstat(argv[0], &stb1);
-	if (argv[1][0] == '-' && !argv[1][1]) { /* "-" */
+	if (LONE_DASH(argv[1])) {
 		fstat(STDIN_FILENO, &stb2);
 		gotstdin = 1;
 	} else

coreutils/env.c

@@ -58,7 +58,7 @@ int env_main(int argc, char** argv)
 	opt = getopt32(argc, argv, "+iu:", &unset_env);
 
 	argv += optind;
-	if (*argv && (argv[0][0] == '-') && !argv[0][1]) {
+	if (*argv && LONE_DASH(argv[0])) {
 		opt |= 1;
 		++argv;
 	}

coreutils/md5_sha1_sum.c

@@ -39,7 +39,7 @@ static uint8_t *hash_file(const char *filename, hash_algo_t hash_algo)
 	void (*final)(void*, void*);
 
 	src_fd = STDIN_FILENO;
-	if (filename[0] != '-' || filename[1]) { /* not "-" */
+	if (NOT_LONE_DASH(filename)) {
 		src_fd = open(filename, O_RDONLY);
 		if (src_fd < 0) {
 			bb_perror_msg("%s", filename);
@@ -120,7 +120,7 @@ int md5_sha1_sum_main(int argc, char **argv)
 		}
 
 		pre_computed_stream = stdin;
-		if (file_ptr[0] != '-' || file_ptr[1]) { /* not "-" */
+		if (NOT_LONE_DASH(file_ptr)) {
 			pre_computed_stream = xfopen(file_ptr, "r");
 		}
 

coreutils/sort.c

@@ -310,7 +310,7 @@ int sort_main(int argc, char **argv)
 	/* Open input files and read data */
 	for (i = argv[optind] ? optind : optind-1; argv[i]; i++) {
 		fp = stdin;
-		if (i >= optind && (argv[i][0] != '-' || argv[i][1]))
+		if (i >= optind && NOT_LONE_DASH(argv[i]))
 			fp = xfopen(argv[i], "r");
 		for (;;) {
 			line = GET_LINE(fp);

coreutils/sum.c

@@ -18,9 +18,6 @@
 /* 1 if any of the files read were the standard input */
 static int have_read_stdin;
 
-/* make a little more readable and avoid using strcmp for just 2 bytes */
-#define IS_STDIN(s) (s[0] == '-' && s[1] == '\0')
-
 /* Calculate and print the rotated checksum and the size in 1K blocks
    of file FILE, or of the standard input if FILE is "-".
    If PRINT_NAME is >1, print FILE next to the checksum and size.
@@ -34,7 +31,7 @@ static int bsd_sum_file(const char *file, int print_name)
 	int ch;                    /* Each character read. */
 	int ret = 0;
 
-	if (IS_STDIN(file)) {
+	if (LONE_DASH(file)) {
 		fp = stdin;
 		have_read_stdin++;
 	} else {
@@ -84,7 +81,7 @@ static int sysv_sum_file(const char *file, int print_name)
 	/* The sum of all the input bytes, modulo (UINT_MAX + 1).  */
 	unsigned int s = 0;
 
-	if (IS_STDIN(file)) {
+	if (LONE_DASH(file)) {
 		fd = 0;
 		have_read_stdin = 1;
 	} else {
@@ -103,7 +100,7 @@ static int sysv_sum_file(const char *file, int print_name)
 release_and_ret:
 			bb_perror_msg(file);
 			RELEASE_CONFIG_BUFFER(buf);
-			if (!IS_STDIN(file))
+			if (NOT_LONE_DASH(file))
 				close(fd);
 			return 0;
 		}
@@ -113,7 +110,7 @@ release_and_ret:
 			s += buf[bytes_read];
 	}
 
-	if (!IS_STDIN(file) && close(fd) == -1)
+	if (NOT_LONE_DASH(file) && close(fd) == -1)
 		goto release_and_ret;
 	else
 		RELEASE_CONFIG_BUFFER(buf);

coreutils/tail.c

@@ -176,8 +176,8 @@ int tail_main(int argc, char **argv)
 	}
 
 	do {
-		if ((argv[i][0] == '-') && !argv[i][1]) {
-		DO_STDIN:
+		if (LONE_DASH(argv[i])) {
+ DO_STDIN:
 			fds[nfiles] = STDIN_FILENO;
 		} else if ((fds[nfiles] = open(argv[i], O_RDONLY)) < 0) {
 			bb_perror_msg("%s", argv[i]);

coreutils/uudecode.c

@@ -166,7 +166,7 @@ int uudecode_main(int argc, char **argv)
 			}
 			outname++;
 		}
-		if (strcmp(outname, "-") == 0) {
+		if (LONE_DASH(outname)) {
 			dst_stream = stdout;
 		} else {
 			dst_stream = xfopen(outname, "w");