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Annotation of 43BSDReno/usr.bin/find/misc.c, revision 1.1

1.1     ! root        1: /*-
        !             2:  * Copyright (c) 1990 The Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * This code is derived from software contributed to Berkeley by
        !             6:  * Cimarron D. Taylor of the University of California, Berkeley.
        !             7:  *
        !             8:  * Redistribution and use in source and binary forms are permitted provided
        !             9:  * that: (1) source distributions retain this entire copyright notice and
        !            10:  * comment, and (2) distributions including binaries display the following
        !            11:  * acknowledgement:  ``This product includes software developed by the
        !            12:  * University of California, Berkeley and its contributors'' in the
        !            13:  * documentation or other materials provided with the distribution and in
        !            14:  * all advertising materials mentioning features or use of this software.
        !            15:  * Neither the name of the University nor the names of its contributors may
        !            16:  * be used to endorse or promote products derived from this software without
        !            17:  * specific prior written permission.
        !            18:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            19:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            20:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            21:  */
        !            22: 
        !            23: #ifndef lint
        !            24: static char sccsid[] = "@(#)misc.c     5.2 (Berkeley) 5/12/90";
        !            25: #endif /* not lint */
        !            26: 
        !            27: #include <sys/types.h>
        !            28: #include <sys/stat.h>
        !            29: #include <stdio.h>
        !            30: #include "find.h"
        !            31:  
        !            32: /*
        !            33:  * find_subst --
        !            34:  *     Replace occurrences of {} in s1 with s2 and return the result string.
        !            35:  */
        !            36: find_subst(orig, store, path, len)
        !            37:        char *orig, **store, *path;
        !            38:        int len;
        !            39: {
        !            40:        register int plen;
        !            41:        register char ch, *p;
        !            42:        char *realloc(), *strerror();
        !            43: 
        !            44:        plen = strlen(path);
        !            45:        for (p = *store; ch = *orig; ++orig)
        !            46:                if (ch == '{' && orig[1] == '}') {
        !            47:                        while ((p - *store) + plen > len)
        !            48:                                if (!(*store = realloc(*store, len *= 2))) {
        !            49:                                        (void)fprintf(stderr,
        !            50:                                            "find: %s.\n", strerror(errno));
        !            51:                                        exit(1);
        !            52:                                }
        !            53:                        bcopy(path, p, plen);
        !            54:                        p += plen;
        !            55:                        ++orig;
        !            56:                } else
        !            57:                        *p++ = ch;
        !            58:        *p = '\0';
        !            59: }
        !            60: 
        !            61: /*
        !            62:  * find_queryuser --
        !            63:  *     print a message to standard error and then read input from standard
        !            64:  *     input. If the input is 'y' then 1 is returned.
        !            65:  */
        !            66: find_queryuser(argv)
        !            67:        register char **argv;
        !            68: {
        !            69:        char buf[10];
        !            70: 
        !            71:        (void)fprintf(stderr, "\"%s", *argv);
        !            72:        while (*++argv)
        !            73:                (void)fprintf(stderr, " %s", *argv);
        !            74:        (void)fprintf(stderr, "\"? ");
        !            75:        (void)fflush(stderr);
        !            76:        return(!fgets(buf, sizeof(buf), stdin) || buf[0] != 'y' ? 0 : 1);
        !            77: }
        !            78:  
        !            79: /*
        !            80:  * bad_arg --
        !            81:  *     print out a bad argument message.
        !            82:  */
        !            83: void
        !            84: bad_arg(option, error)
        !            85:        char *option, *error;
        !            86: {
        !            87:        (void)fprintf(stderr, "find: %s: %s.\n", option, error);
        !            88:        exit(1);
        !            89: }
        !            90:  
        !            91: /*
        !            92:  * emalloc --
        !            93:  *     malloc with error checking.
        !            94:  */
        !            95: char *
        !            96: emalloc(len)
        !            97:        u_int len;
        !            98: {
        !            99:        char *p, *malloc(), *strerror();
        !           100: 
        !           101:        if (!(p = malloc(len))) {
        !           102:                (void)fprintf(stderr, "find: %s.\n", strerror(errno));
        !           103:                exit(1);
        !           104:        }
        !           105:        return(p);
        !           106: }
        !           107: 
        !           108: usage()
        !           109: {
        !           110:        extern int deprecated;
        !           111: 
        !           112:        if (deprecated)
        !           113:                (void)fprintf(stderr, "usage: find path-list expression\n");
        !           114:        else
        !           115:                (void)fprintf(stderr,
        !           116:                    "usage: find [-dsx] -f path ... expression\n");
        !           117:        exit(1);
        !           118: }

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