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Annotation of src/usr.bin/what/what.c, Revision 1.5

1.5     ! art         1: /*     $OpenBSD: what.c,v 1.4 1996/06/26 07:08:36 deraadt Exp $        */
1.1       deraadt     2: /*     $NetBSD: what.c,v 1.4 1994/12/20 16:01:03 jtc Exp $     */
                      3:
                      4: /*
                      5:  * Copyright (c) 1980, 1988, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *     This product includes software developed by the University of
                     19:  *     California, Berkeley and its contributors.
                     20:  * 4. Neither the name of the University nor the names of its contributors
                     21:  *    may be used to endorse or promote products derived from this software
                     22:  *    without specific prior written permission.
                     23:  *
                     24:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     25:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     26:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     27:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     28:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     29:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     30:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     31:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     32:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     33:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     34:  * SUCH DAMAGE.
                     35:  */
                     36:
                     37: #ifndef lint
                     38: static char copyright[] =
                     39: "@(#) Copyright (c) 1980, 1988, 1993\n\
                     40:        The Regents of the University of California.  All rights reserved.\n";
                     41: #endif /* not lint */
                     42:
                     43: #ifndef lint
                     44: #if 0
                     45: static char sccsid[] = "@(#)what.c     8.1 (Berkeley) 6/6/93";
                     46: #endif
1.5     ! art        47: static char rcsid[] = "$OpenBSD: what.c,v 1.4 1996/06/26 07:08:36 deraadt Exp $";
1.1       deraadt    48: #endif /* not lint */
                     49:
1.3       deraadt    50: #include <sys/types.h>
                     51: #include <sys/utsname.h>
1.1       deraadt    52: #include <stdio.h>
1.3       deraadt    53: #include <ctype.h>
1.5     ! art        54: #include <err.h>
        !            55: #include <string.h>
1.1       deraadt    56:
1.3       deraadt    57: void search __P((char *));
1.1       deraadt    58:
                     59: /*
                     60:  * what
                     61:  */
                     62: /* ARGSUSED */
                     63: int
                     64: main(argc, argv)
                     65:        int argc;
                     66:        char **argv;
                     67: {
1.3       deraadt    68:        struct utsname utsn;
                     69:        char match[256];
                     70:
                     71:        if (uname(&utsn) == -1)
                     72:                err(1, "uname");
                     73:        strncpy(match, utsn.sysname, sizeof match);
                     74:
1.1       deraadt    75:        if (!*++argv)
1.3       deraadt    76:                search(match);
1.1       deraadt    77:        else do {
                     78:                if (!freopen(*argv, "r", stdin)) {
                     79:                        perror(*argv);
                     80:                        exit(1);
                     81:                }
                     82:                printf("%s\n", *argv);
1.3       deraadt    83:                search(match);
1.1       deraadt    84:        } while(*++argv);
                     85:        exit(0);
                     86: }
                     87:
                     88: void
1.3       deraadt    89: search(match)
                     90:        char *match;
1.1       deraadt    91: {
                     92:        register int c;
1.3       deraadt    93:        int i;
1.1       deraadt    94:
                     95:        while ((c = getchar()) != EOF) {
1.3       deraadt    96: loop:          if (c == '$') {
                     97:                        for (i = 0; match[i]; i++)
                     98:                                if ((c = getchar()) != match[i])
                     99:                                        goto loop;
1.4       deraadt   100:                        printf("\t$%s", match);
1.3       deraadt   101:                        while (isprint(c = getchar()))
                    102:                                putchar(c);
                    103:                        putchar('\n');
                    104:                        goto loop;
                    105:                }
                    106:                if (c != '@')
1.1       deraadt   107:                        continue;
                    108:                if ((c = getchar()) != '(')
                    109:                        goto loop;
                    110:                if ((c = getchar()) != '#')
                    111:                        goto loop;
                    112:                if ((c = getchar()) != ')')
                    113:                        goto loop;
                    114:                putchar('\t');
                    115:                while ((c = getchar()) != EOF && c && c != '"' &&
                    116:                    c != '>' && c != '\n')
                    117:                        putchar(c);
                    118:                putchar('\n');
                    119:        }
                    120: }