landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 1 | /* vi: set ts=4 :*/ |
| 2 | /* Toybox infrastructure. |
| 3 | * |
| 4 | * Copyright 2006 Rob Landley <rob@landley.net> |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 5 | */ |
| 6 | |
landley | c562150 | 2006-09-28 17:18:51 -0400 | [diff] [blame] | 7 | #include "toys.h" |
| 8 | |
Rob Landley | f2311a4 | 2006-11-04 17:45:18 -0500 | [diff] [blame] | 9 | // Populate toy_list[]. |
landley | c562150 | 2006-09-28 17:18:51 -0400 | [diff] [blame] | 10 | |
| 11 | struct toy_list toy_list[] = { |
Rob Landley | f2311a4 | 2006-11-04 17:45:18 -0500 | [diff] [blame] | 12 | #define FROM_MAIN |
| 13 | #include "toys/toylist.h" |
landley | c562150 | 2006-09-28 17:18:51 -0400 | [diff] [blame] | 14 | }; |
| 15 | |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 16 | #define TOY_LIST_LEN (sizeof(toy_list)/sizeof(struct toy_list)) |
| 17 | |
landley | c562150 | 2006-09-28 17:18:51 -0400 | [diff] [blame] | 18 | // global context for this applet. |
| 19 | |
| 20 | struct toy_context toys; |
| 21 | |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 22 | struct toy_list *toy_find(char *name) |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 23 | { |
| 24 | int top, bottom, middle; |
| 25 | |
| 26 | // If the name starts with "toybox", accept that as a match. Otherwise |
| 27 | // skip the first entry, which is out of order. |
| 28 | |
| 29 | if (!strncmp(name,"toybox",6)) return toy_list; |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 30 | bottom = 1; |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 31 | |
| 32 | // Binary search to find this applet. |
| 33 | |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 34 | top = TOY_LIST_LEN-1; |
| 35 | for (;;) { |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 36 | int result; |
| 37 | |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 38 | middle = (top+bottom)/2; |
| 39 | if (middle<bottom || middle>top) return NULL; |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 40 | result = strcmp(name,toy_list[middle].name); |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 41 | if (!result) return toy_list+middle; |
| 42 | if (result<0) top=--middle; |
| 43 | else bottom = ++middle; |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 44 | } |
| 45 | } |
| 46 | |
landley | cd9dfc3 | 2006-10-18 18:38:16 -0400 | [diff] [blame] | 47 | void toy_init(struct toy_list *which, char *argv[]) |
| 48 | { |
| 49 | // Free old toys contents here? |
| 50 | |
| 51 | toys.which = which; |
| 52 | toys.argv = argv; |
landley | cd9dfc3 | 2006-10-18 18:38:16 -0400 | [diff] [blame] | 53 | toys.exitval = 1; |
Rob Landley | 8324b89 | 2006-11-19 02:49:22 -0500 | [diff] [blame^] | 54 | if (which->options) get_optflags(); |
landley | cd9dfc3 | 2006-10-18 18:38:16 -0400 | [diff] [blame] | 55 | } |
| 56 | |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 57 | // Run a toy. |
| 58 | void toy_exec(char *argv[]) |
| 59 | { |
| 60 | struct toy_list *which; |
| 61 | |
| 62 | which = toy_find(argv[0]); |
| 63 | if (!which) return; |
| 64 | |
landley | cd9dfc3 | 2006-10-18 18:38:16 -0400 | [diff] [blame] | 65 | toy_init(which, argv); |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 66 | |
| 67 | exit(toys.which->toy_main()); |
| 68 | } |
| 69 | |
| 70 | int toybox_main(void) |
| 71 | { |
| 72 | static char *toy_paths[]={"usr/","bin/","sbin/",0}; |
| 73 | int i, len = 0; |
| 74 | |
| 75 | if (toys.argv[1]) { |
| 76 | if (toys.argv[1][0]!='-') { |
| 77 | toy_exec(toys.argv+1); |
| 78 | error_exit("No behavior for %s\n",toys.argv[1]); |
| 79 | } |
| 80 | } |
| 81 | |
| 82 | // Output list of applets. |
| 83 | for (i=1; i<TOY_LIST_LEN; i++) { |
| 84 | int fl = toy_list[i].flags; |
| 85 | if (fl & TOYMASK_LOCATION) { |
| 86 | if (toys.argv[1]) { |
| 87 | int j; |
| 88 | for (j=0; toy_paths[j]; j++) |
| 89 | if (fl & (1<<j)) len += printf("%s", toy_paths[j]); |
| 90 | } |
| 91 | len += printf("%s ",toy_list[i].name); |
| 92 | if (len>65) { |
| 93 | putchar('\n'); |
| 94 | len=0; |
| 95 | } |
| 96 | } |
| 97 | } |
| 98 | putchar('\n'); |
| 99 | return 0; |
| 100 | } |
| 101 | |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 102 | int main(int argc, char *argv[]) |
| 103 | { |
| 104 | char *name; |
| 105 | |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 106 | // Figure out which applet to call. |
| 107 | name = rindex(argv[0], '/'); |
| 108 | if (!name) name=argv[0]; |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 109 | else name++; |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 110 | argv[0] = name; |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 111 | |
landley | 4f344e3 | 2006-10-05 16:18:03 -0400 | [diff] [blame] | 112 | toys.argv = argv-1; |
| 113 | return toybox_main(); |
landley | 13bab2f | 2006-09-27 00:45:05 -0400 | [diff] [blame] | 114 | } |