Mercurial > hg > toybox
view toys/other/tac.c @ 754:06c32155cb95
Minor cleanups.
author | Rob Landley <rob@landley.net> |
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date | Wed, 19 Dec 2012 09:16:27 -0600 |
parents | f7eaff0c8d0c |
children | 54d248b907ed |
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/* tac.c - output lines in reverse order * * Copyright 2012 Rob Landley <rob@landley.net> USE_TAC(NEWTOY(tac, NULL, TOYFLAG_USR|TOYFLAG_BIN)) config TAC bool "tac" default y help usage: tac [FILE...] Output lines in reverse order. */ #include "toys.h" void do_tac(int fd, char *name) { struct arg_list *list = NULL; char *c; // Read in lines for (;;) { struct arg_list *temp; if (!(c = get_line(fd))) break; temp = xmalloc(sizeof(struct arg_list)); temp->next = list; temp->arg = c; list = temp; } // Play them back. while (list) { struct arg_list *temp = list->next; xputs(list->arg); free(list->arg); free(list); list = temp; } } void tac_main(void) { loopfiles(toys.optargs, do_tac); }