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Annotation of src/usr.bin/find/misc.c, Revision 1.2

1.2     ! deraadt     1: /*     $OpenBSD$       */
        !             2:
1.1       deraadt     3: /*-
                      4:  * Copyright (c) 1990, 1993
                      5:  *     The Regents of the University of California.  All rights reserved.
                      6:  *
                      7:  * This code is derived from software contributed to Berkeley by
                      8:  * Cimarron D. Taylor of the University of California, Berkeley.
                      9:  *
                     10:  * Redistribution and use in source and binary forms, with or without
                     11:  * modification, are permitted provided that the following conditions
                     12:  * are met:
                     13:  * 1. Redistributions of source code must retain the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer.
                     15:  * 2. Redistributions in binary form must reproduce the above copyright
                     16:  *    notice, this list of conditions and the following disclaimer in the
                     17:  *    documentation and/or other materials provided with the distribution.
                     18:  * 3. All advertising materials mentioning features or use of this software
                     19:  *    must display the following acknowledgement:
                     20:  *     This product includes software developed by the University of
                     21:  *     California, Berkeley and its contributors.
                     22:  * 4. Neither the name of the University nor the names of its contributors
                     23:  *    may be used to endorse or promote products derived from this software
                     24:  *    without specific prior written permission.
                     25:  *
                     26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     36:  * SUCH DAMAGE.
                     37:  */
                     38:
                     39: #ifndef lint
                     40: /*static char sccsid[] = "from: @(#)misc.c     8.1 (Berkeley) 6/6/93";*/
1.2     ! deraadt    41: static char rcsid[] = "$OpenBSD: misc.c,v 1.1.1.1 1995/10/18 08:45:14 deraadt Exp $";
1.1       deraadt    42: #endif /* not lint */
                     43:
                     44: #include <sys/types.h>
                     45: #include <sys/stat.h>
                     46:
                     47: #include <err.h>
                     48: #include <errno.h>
                     49: #include <fts.h>
                     50: #include <stdio.h>
                     51: #include <stdlib.h>
                     52: #include <string.h>
                     53:
                     54: #include "find.h"
                     55:
                     56: /*
                     57:  * brace_subst --
                     58:  *     Replace occurrences of {} in s1 with s2 and return the result string.
                     59:  */
                     60: void
                     61: brace_subst(orig, store, path, len)
                     62:        char *orig, **store, *path;
                     63:        int len;
                     64: {
                     65:        register int plen;
                     66:        register char ch, *p;
                     67:
                     68:        plen = strlen(path);
                     69:        for (p = *store; ch = *orig; ++orig)
                     70:                if (ch == '{' && orig[1] == '}') {
                     71:                        while ((p - *store) + plen > len)
                     72:                                if (!(*store = realloc(*store, len *= 2)))
                     73:                                        err(1, NULL);
                     74:                        memmove(p, path, plen);
                     75:                        p += plen;
                     76:                        ++orig;
                     77:                } else
                     78:                        *p++ = ch;
                     79:        *p = '\0';
                     80: }
                     81:
                     82: /*
                     83:  * queryuser --
                     84:  *     print a message to standard error and then read input from standard
                     85:  *     input. If the input is 'y' then 1 is returned.
                     86:  */
                     87: int
                     88: queryuser(argv)
                     89:        register char **argv;
                     90: {
                     91:        int ch, first, nl;
                     92:
                     93:        (void)fprintf(stderr, "\"%s", *argv);
                     94:        while (*++argv)
                     95:                (void)fprintf(stderr, " %s", *argv);
                     96:        (void)fprintf(stderr, "\"? ");
                     97:        (void)fflush(stderr);
                     98:
                     99:        first = ch = getchar();
                    100:        for (nl = 0;;) {
                    101:                if (ch == '\n') {
                    102:                        nl = 1;
                    103:                        break;
                    104:                }
                    105:                if (ch == EOF)
                    106:                        break;
                    107:                ch = getchar();
                    108:        }
                    109:
                    110:        if (!nl) {
                    111:                (void)fprintf(stderr, "\n");
                    112:                (void)fflush(stderr);
                    113:        }
                    114:         return (first == 'y');
                    115: }
                    116:
                    117: /*
                    118:  * emalloc --
                    119:  *     malloc with error checking.
                    120:  */
                    121: void *
                    122: emalloc(len)
                    123:        u_int len;
                    124: {
                    125:        void *p;
                    126:
                    127:        if (p = malloc(len))
                    128:                return (p);
                    129:        err(1, NULL);
                    130: }