findutils/find.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Mini find implementation for busybox
   4  *
   5  *
   6  * Copyright (C) 1999,2000 by Lineo, inc.
   7  * Written by Erik Andersen <andersen@lineo.com>, <andersee@debian.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  17  * General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License
  20  * along with this program; if not, write to the Free Software
  21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22  *
  23  */
  24
  25 #include "internal.h"
  26 #include "regexp.h"
  27 #include <stdio.h>
  28 #include <unistd.h>
  29 #include <dirent.h>
  30
  31
  32 static char *pattern = NULL;
  33 static char *directory = ".";
  34 static int dereferenceFlag = FALSE;
  35
  36 static const char find_usage[] = "find [PATH...] [EXPRESSION]\n\n"
  37         "Search for files in a directory hierarchy.  The default PATH is\n"
  38         "the current directory; default EXPRESSION is '-print'\n\n"
  39         "\nEXPRESSION may consist of:\n"
  40         "\t-follow\t\tDereference symbolic links.\n"
  41         "\t-name PATTERN\tFile name (leading directories removed) matches PATTERN.\n"
  42         "\t-print\t\tprint the full file name followed by a newline to stdout.\n";
  43
  44
  45 static int fileAction(const char *fileName, struct stat *statbuf, void* junk)
  46 {
  47         if (pattern == NULL)
  48                 fprintf(stdout, "%s\n", fileName);
  49         else {
  50                 char *tmp = strrchr(fileName, '/');
  51
  52                 if (tmp == NULL)
  53                         tmp = (char *) fileName;
  54                 else
  55                         tmp++;
  56                 if (check_wildcard_match(tmp, pattern) == TRUE)
  57                         fprintf(stdout, "%s\n", fileName);
  58         }
  59         return (TRUE);
  60 }
  61
  62 int find_main(int argc, char **argv)
  63 {
  64         /* peel off the "find" */
  65         argc--;
  66         argv++;
  67
  68         if (argc > 0 && **argv != '-') {
  69                 directory = *argv;
  70                 argc--;
  71                 argv++;
  72         }
  73
  74         /* Parse any options */
  75         while (argc > 0 && **argv == '-') {
  76                 int stopit = FALSE;
  77
  78                 while (*++(*argv) && stopit == FALSE)
  79                         switch (**argv) {
  80                         case 'f':
  81                                 if (strcmp(*argv, "follow") == 0) {
  82                                         argc--;
  83                                         argv++;
  84                                         dereferenceFlag = TRUE;
  85                                 }
  86                                 break;
  87                         case 'n':
  88                                 if (strcmp(*argv, "name") == 0) {
  89                                         if (argc-- > 1) {
  90                                                 pattern = *(++argv);
  91                                                 stopit = TRUE;
  92                                         } else {
  93                                                 usage(find_usage);
  94                                         }
  95                                 }
  96                                 break;
  97                         case '-':
  98                                 /* Ignore all long options */
  99                                 break;
 100                         default:
 101                                 usage(find_usage);
 102                         }
 103                 if (argc-- > 1)
 104                         argv++;
 105                 if (**argv != '-')
 106                         break;
 107                 else
 108                         break;
 109         }
 110
 111         if (recursiveAction(directory, TRUE, FALSE, FALSE,
 112                                                 fileAction, fileAction, NULL) == FALSE) {
 113                 exit(FALSE);
 114         }
 115
 116         exit(TRUE);
 117 }