6346d454f4a08fcdad7c1a6d45eb908016ebe2f2
[oweals/busybox.git] / find.c
1 /* vi: set sw=4 ts=4: */
2 /*
3  * Mini find implementation for busybox
4  *
5  *
6  * Copyright (C) 1999 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\n\t\tDereference symbolic links.\n"
41         "\t-name PATTERN\n\t\tFile name (with leading directories removed) matches PATTERN.\n"
42         "\t-print\n\t\tprint the full file name followed by a newline to stdout.\n\n"
43 #if defined BB_REGEXP
44         "This version of find matches full regular expresions.\n";
45 #else
46         "This version of find matches strings (not regular expresions).\n";
47 #endif
48
49
50
51 static int fileAction(const char *fileName, struct stat *statbuf)
52 {
53         if (pattern == NULL)
54                 fprintf(stdout, "%s\n", fileName);
55         else {
56                 char *tmp = strrchr(fileName, '/');
57
58                 if (tmp == NULL)
59                         tmp = (char *) fileName;
60                 else
61                         tmp++;
62                 if (check_wildcard_match(tmp, pattern) == TRUE)
63                         fprintf(stdout, "%s\n", fileName);
64         }
65         return (TRUE);
66 }
67
68 int find_main(int argc, char **argv)
69 {
70         /* peel off the "find" */
71         argc--;
72         argv++;
73
74         if (argc > 0 && **argv != '-') {
75                 directory = *argv;
76                 argc--;
77                 argv++;
78         }
79
80         /* Parse any options */
81         while (argc > 0 && **argv == '-') {
82                 int stopit = FALSE;
83
84                 while (*++(*argv) && stopit == FALSE)
85                         switch (**argv) {
86                         case 'f':
87                                 if (strcmp(*argv, "follow") == 0) {
88                                         argc--;
89                                         argv++;
90                                         dereferenceFlag = TRUE;
91                                 }
92                                 break;
93                         case 'n':
94                                 if (strcmp(*argv, "name") == 0) {
95                                         if (argc-- > 1) {
96                                                 pattern = *(++argv);
97                                                 stopit = TRUE;
98                                         } else {
99                                                 usage(find_usage);
100                                         }
101                                 }
102                                 break;
103                         case '-':
104                                 /* Ignore all long options */
105                                 break;
106                         default:
107                                 usage(find_usage);
108                         }
109                 if (argc-- > 1)
110                         argv++;
111                 if (**argv != '-')
112                         break;
113                 else
114                         break;
115         }
116
117         if (recursiveAction(directory, TRUE, FALSE, FALSE,
118                                                 fileAction, fileAction) == FALSE) {
119                 exit(FALSE);
120         }
121
122         exit(TRUE);
123 }