1 /*-
2  * SPDX-License-Identifier: BSD-3-Clause
55 static struct cset *setup(char *, STR *, int, int);
70 	if (caph_limit_stdio() == -1)  in main()
77 	while ((ch = getopt(argc, argv, "Ccdsu")) != -1)  in main()
100 	argc -= optind;  in main()
117 	 * tr -ds [-Cc] string1 string2  in main()
125 		delete = setup(argv[0], &s1, cflag, Cflag);  in main()
126 		squeeze = setup(argv[1], &s2, 0, 0);  in main()
140 	 * tr -d [-Cc] string1  in main()
147 		delete = setup(argv[0], &s1, cflag, Cflag);  in main()
158 	 * tr -s [-Cc] string1  in main()
162 		squeeze = setup(argv[0], &s1, cflag, Cflag);  in main()
175 	 * tr [-Ccs] string1 string2  in main()
177 	 * the character in the same position in string2.  If the -s option is  in main()
203 	 * For -s result will contain only those characters defined  in main()
262 		 * for non-characters with the -C option; those are simulated  in main()
290 		n = p - carray;  in main()
333 setup(char *arg, STR *str, int cflag, int Cflag)  in setup()  function
335 	struct cset *cs;  in setup()  local
337 	cs = cset_alloc();  in setup()
338 	if (cs == NULL)  in setup()
340 	str->str = arg;  in setup()
342 		cset_add(cs, str->lastch);  in setup()
344 		cset_addclass(cs, wctype("rune"), true);  in setup()
346 		cset_invert(cs);  in setup()
347 	cset_cache(cs);  in setup()
348 	return (cs);  in setup()
365 		"usage: tr [-Ccsu] string1 string2",  in usage()
366 		"       tr [-Ccu] -d string1",  in usage()
367 		"       tr [-Ccu] -s string1",  in usage()
368 		"       tr [-Ccu] -ds string1 string2");  in usage()