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Annotation of src/usr.bin/find/main.c, Revision 1.1

1.1     ! deraadt     1: /*-
        !             2:  * Copyright (c) 1990, 1993
        !             3:  *     The Regents of the University of California.  All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms, with or without
        !             6:  * modification, are permitted provided that the following conditions
        !             7:  * are met:
        !             8:  * 1. Redistributions of source code must retain the above copyright
        !             9:  *    notice, this list of conditions and the following disclaimer.
        !            10:  * 2. Redistributions in binary form must reproduce the above copyright
        !            11:  *    notice, this list of conditions and the following disclaimer in the
        !            12:  *    documentation and/or other materials provided with the distribution.
        !            13:  * 3. All advertising materials mentioning features or use of this software
        !            14:  *    must display the following acknowledgement:
        !            15:  *     This product includes software developed by the University of
        !            16:  *     California, Berkeley and its contributors.
        !            17:  * 4. Neither the name of the University nor the names of its contributors
        !            18:  *    may be used to endorse or promote products derived from this software
        !            19:  *    without specific prior written permission.
        !            20:  *
        !            21:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            22:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            23:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            24:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            25:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            26:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            27:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            28:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            29:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            30:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            31:  * SUCH DAMAGE.
        !            32:  */
        !            33:
        !            34: #ifndef lint
        !            35: /*static char sccsid[] = "@(#)main.c   8.1 (Berkeley) 6/6/93";*/
        !            36: static char rcsid[] = "$Id: main.c,v 1.5 1994/01/24 23:08:15 jtc Exp $";
        !            37: #endif /* not lint */
        !            38:
        !            39: #include <sys/types.h>
        !            40: #include <sys/stat.h>
        !            41:
        !            42: #include <err.h>
        !            43: #include <errno.h>
        !            44: #include <fcntl.h>
        !            45: #include <fts.h>
        !            46: #include <stdio.h>
        !            47: #include <stdlib.h>
        !            48: #include <time.h>
        !            49:
        !            50: #include "find.h"
        !            51:
        !            52: time_t now;                    /* time find was run */
        !            53: int dotfd;                     /* starting directory */
        !            54: int ftsoptions;                        /* options for the ftsopen(3) call */
        !            55: int isdeprecated;              /* using deprecated syntax */
        !            56: int isdepth;                   /* do directories on post-order visit */
        !            57: int isoutput;                  /* user specified output operator */
        !            58: int isxargs;                   /* don't permit xargs delimiting chars */
        !            59:
        !            60: static void usage __P((void));
        !            61:
        !            62: int
        !            63: main(argc, argv)
        !            64:        int argc;
        !            65:        char *argv[];
        !            66: {
        !            67:        register char **p, **start;
        !            68:        int ch;
        !            69:
        !            70:        (void)time(&now);       /* initialize the time-of-day */
        !            71:
        !            72:        p = start = argv;
        !            73:        ftsoptions = FTS_NOSTAT|FTS_PHYSICAL;
        !            74:        while ((ch = getopt(argc, argv, "Hdf:hXx")) != EOF)
        !            75:                switch(ch) {
        !            76:                case 'H':
        !            77:                        ftsoptions |= FTS_COMFOLLOW;
        !            78:                        break;
        !            79:                case 'd':
        !            80:                        isdepth = 1;
        !            81:                        break;
        !            82:                case 'f':
        !            83:                        *p++ = optarg;
        !            84:                        break;
        !            85:                case 'h':
        !            86:                        ftsoptions &= ~FTS_PHYSICAL;
        !            87:                        ftsoptions |= FTS_LOGICAL;
        !            88:                        break;
        !            89:                case 'X':
        !            90:                        isxargs = 1;
        !            91:                        break;
        !            92:                case 'x':
        !            93:                        ftsoptions &= ~FTS_NOSTAT;
        !            94:                        ftsoptions |= FTS_XDEV;
        !            95:                        break;
        !            96:                case '?':
        !            97:                default:
        !            98:                        break;
        !            99:                }
        !           100:
        !           101:        argc -= optind;
        !           102:        argv += optind;
        !           103:
        !           104:        /* The first argument that starts with a -, or is a ! or a (, and all
        !           105:         * subsequent arguments shall be interpreted as an expression ...
        !           106:         * (POSIX.2).
        !           107:         */
        !           108:        while (*argv) {
        !           109:                if (**argv == '-' ||
        !           110:                    ((**argv == '!' || **argv == '(') && (*argv)[1] == '\0'))
        !           111:                        break;
        !           112:                *p++ = *argv++;
        !           113:        }
        !           114:
        !           115:        if (p == start)
        !           116:                usage();
        !           117:        *p = NULL;
        !           118:
        !           119:        if ((dotfd = open(".", O_RDONLY, 0)) < 0)
        !           120:                err(1, ".:");
        !           121:
        !           122:        find_execute(find_formplan(argv), start);
        !           123:        exit(0);
        !           124: }
        !           125:
        !           126: static void
        !           127: usage()
        !           128: {
        !           129:        (void)fprintf(stderr,
        !           130:            "usage: find [-HdhXx] [-f file] [file ...] expression\n");
        !           131:        exit(1);
        !           132: }