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Annotation of 43BSDTahoe/usr.bin/basename.c, revision 1.1.1.1

1.1       root        1: /*
                      2:  * Copyright (c) 1987 Regents of the University of California.
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms are permitted
                      6:  * provided that the above copyright notice and this paragraph are
                      7:  * duplicated in all such forms and that any documentation,
                      8:  * advertising materials, and other materials related to such
                      9:  * distribution and use acknowledge that the software was developed
                     10:  * by the University of California, Berkeley.  The name of the
                     11:  * University may not be used to endorse or promote products derived
                     12:  * from this software without specific prior written permission.
                     13:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     14:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     15:  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     16:  */
                     17: 
                     18: #ifndef lint
                     19: char copyright[] =
                     20: "@(#) Copyright (c) 1987 Regents of the University of California.\n\
                     21:  All rights reserved.\n";
                     22: #endif /* not lint */
                     23: 
                     24: #ifndef lint
                     25: static char sccsid[] = "@(#)basename.c 4.5 (Berkeley) 6/29/88";
                     26: #endif /* not lint */
                     27: 
                     28: main(argc, argv)
                     29:        int argc;
                     30:        char **argv;
                     31: {
                     32:        register char *p, *t;
                     33:        char *base;
                     34: 
                     35:        if (argc <= 1) {        /* backward compatible */
                     36:                putchar('\n');
                     37:                exit(1);
                     38:        }
                     39:        for (p = base = *++argv; *p;)
                     40:                if (*p++ == '/')
                     41:                        base = p;
                     42:        if (argc > 2) {         /* original version allows any # of args */
                     43:                for (t = *++argv; *t; ++t);
                     44:                do {
                     45:                        if (t == *argv) {
                     46:                                *p = '\0';
                     47:                                break;
                     48:                        }
                     49:                } while (p >= base && *--t == *--p);
                     50:        }
                     51:        puts(base);
                     52:        exit(0);
                     53: }

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