Mercurial > hg > toybox
annotate toys/which.c @ 20:3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
functions in main.c with USE() macros so --gc-sections can strip them.
author | Rob Landley <rob@landley.net> |
---|---|
date | Fri, 03 Nov 2006 00:05:52 -0500 |
parents | |
children | eb46bb5626cb |
rev | line source |
---|---|
20
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
1 /* vi: set sw=4 ts=4: */ |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
2 /* |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
3 * which.c - |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
4 * |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
5 * Copyright 2006 Rob landley <rob@landley.net> |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
6 */ |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
7 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
8 #include "toys.h" |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
9 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
10 #define OPTIONS "a" |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
11 #define OPT_a 1 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
12 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
13 // Find an exectuable file either at a path with a slash in it (absolute or |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
14 // relative to current directory), or in $PATH. Returns absolute path to file, |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
15 // or NULL if not found. |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
16 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
17 static int which_in_path(char *filename) |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
18 { |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
19 struct string_list *list; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
20 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
21 // If they gave us a path, don't worry about $PATH or -a |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
22 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
23 if (index(filename, '/')) { |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
24 // Confirm it has the executable bit set, and it's not a directory. |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
25 if (!access(filename, X_OK)) { |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
26 struct stat st; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
27 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
28 if (!stat(filename, &st) && S_ISREG(st.st_mode)) { |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
29 puts(filename); |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
30 return 0; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
31 } |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
32 return 1; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
33 } |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
34 } |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
35 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
36 // Search $PATH for matches. |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
37 list = find_in_path(getenv("PATH"), filename); |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
38 if (!list) return 1; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
39 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
40 // Print out matches |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
41 while (list) { |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
42 if (!access(list->str, X_OK)) { |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
43 puts(list->str); |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
44 // If we should stop at one match, do so |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
45 if (toys.optflags & OPT_a) { |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
46 llist_free(list, NULL); |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
47 break; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
48 } |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
49 } |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
50 free(llist_pop(&list)); |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
51 } |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
52 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
53 return 0; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
54 } |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
55 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
56 int which_main(void) |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
57 { |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
58 char **argv; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
59 int rc = 0; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
60 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
61 // get_optflags(OPTIONS); |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
62 argv = toys.argv+1; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
63 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
64 if (!*argv) rc++; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
65 else { |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
66 int i; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
67 for (i=0; argv[i]; i++) rc |= which_in_path(argv[i]); |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
68 } |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
69 // if (CFG_TOYS_FREE) free(argv); |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
70 |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
71 return rc; |
3981c96f9285
Implement which. Add hello world to menuconfig. Wrap the various applet main
Rob Landley <rob@landley.net>
parents:
diff
changeset
|
72 } |