Annotation of 43BSDReno/usr.bin/basename/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: (1) source distributions retain this entire copyright
                      7:  * notice and comment, and (2) distributions including binaries display
                      8:  * the following acknowledgement:  ``This product includes software
                      9:  * developed by the University of California, Berkeley and its contributors''
                     10:  * in the documentation or other materials provided with the distribution
                     11:  * and in all advertising materials mentioning features or use of this
                     12:  * software. Neither the name of the University nor the names of its
                     13:  * contributors may be used to endorse or promote products derived
                     14:  * from this software without specific prior written permission.
                     15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
                     16:  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
                     17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
                     18:  */
                     19: 
                     20: #ifndef lint
                     21: char copyright[] =
                     22: "@(#) Copyright (c) 1987 Regents of the University of California.\n\
                     23:  All rights reserved.\n";
                     24: #endif /* not lint */
                     25: 
                     26: #ifndef lint
                     27: static char sccsid[] = "@(#)basename.c 4.7 (Berkeley) 6/1/90";
                     28: #endif /* not lint */
                     29: 
                     30: #include <stdio.h>
                     31: 
                     32: main(argc, argv)
                     33:        int argc;
                     34:        char **argv;
                     35: {
                     36:        register char *p, *t;
                     37:        char *base;
                     38: 
                     39:        if (argc < 2 || argc > 3) {
                     40:                fprintf(stderr, "usage: basename string [suffix]\n");
                     41:                exit(1);
                     42:        }
                     43:        for (p = base = *++argv; *p;)
                     44:                if (*p++ == '/')
                     45:                        base = p;
                     46:        if (argc == 3) {
                     47:                for (t = *++argv; *t; ++t);
                     48:                do {
                     49:                        if (t == *argv) {
                     50:                                *p = '\0';
                     51:                                break;
                     52:                        }
                     53:                } while (p >= base && *--t == *--p);
                     54:        }
                     55:        printf("%s\n", base);
                     56:        exit(0);
                     57: }

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