/* vi: set ts=4 :*/ /* Toybox infrastructure. * * Copyright 2006 Rob Landley <rob@landley.net> */ #include "toys.h" // Populate toy_list[]. #undef NEWTOY #undef OLDTOY #define NEWTOY(name, opts, flags) {#name, name##_main, opts, flags}, #define OLDTOY(name, oldname, opts, flags) {#name, oldname##_main, opts, flags}, struct toy_list toy_list[] = { #include "toys/toylist.h" }; #define TOY_LIST_LEN (sizeof(toy_list)/sizeof(struct toy_list)) // global context for this applet. struct toy_context toys; union toy_union toy; char toybuf[4096]; struct toy_list *toy_find(char *name) { int top, bottom, middle; // If the name starts with "toybox", accept that as a match. Otherwise // skip the first entry, which is out of order. if (!strncmp(name,"toybox",6)) return toy_list; bottom = 1; // Binary search to find this applet. top = TOY_LIST_LEN-1; for (;;) { int result; middle = (top+bottom)/2; if (middle<bottom || middle>top) return NULL; result = strcmp(name,toy_list[middle].name); if (!result) return toy_list+middle; if (result<0) top=--middle; else bottom = ++middle; } } // Figure out whether or not anything is using the option parsing logic, // because the compiler can't figure out whether or not to optimize it away // on its' own. #undef NEWTOY #undef OLDTOY #define NEWTOY(name, opts, flags) opts || #define OLDTOY(name, oldname, opts, flags) opts || static const int NEED_OPTIONS = #include "toys/toylist.h" 0; // Ends the opts || opts || opts... void toy_init(struct toy_list *which, char *argv[]) { // Free old toys contents here? toys.which = which; toys.argv = argv; toys.exitval = 1; if (NEED_OPTIONS && which->options) get_optflags(); else toys.optargs = argv+1; } // Run a toy. void toy_exec(char *argv[]) { struct toy_list *which; which = toy_find(argv[0]); if (!which) return; toy_init(which, argv); toys.which->toy_main(); exit(toys.exitval); } void toybox_main(void) { static char *toy_paths[]={"usr/","bin/","sbin/",0}; int i, len = 0; if (toys.argv[1]) { if (toys.argv[1][0]!='-') { toy_exec(toys.argv+1); error_exit("Unknown command %s",toys.argv[1]); } } // Output list of applets. for (i=1; i<TOY_LIST_LEN; i++) { int fl = toy_list[i].flags; if (fl & TOYMASK_LOCATION) { if (toys.argv[1]) { int j; for (j=0; toy_paths[j]; j++) if (fl & (1<<j)) len += printf("%s", toy_paths[j]); } len += printf("%s ",toy_list[i].name); if (len>65) { putchar('\n'); len=0; } } } putchar('\n'); } int main(int argc, char *argv[]) { // Artificial scope to eat less stack for things we call { char *name; // Figure out which applet to call. name = rindex(argv[0], '/'); if (!name) name=argv[0]; else name++; argv[0] = name; } toys.argv = argv-1; toybox_main(); return 0; }