10f66f451Sopenharmony_ci/* tac.c - output lines in reverse order 20f66f451Sopenharmony_ci * 30f66f451Sopenharmony_ci * Copyright 2012 Rob Landley <rob@landley.net> 40f66f451Sopenharmony_ci 50f66f451Sopenharmony_ciUSE_TAC(NEWTOY(tac, NULL, TOYFLAG_USR|TOYFLAG_BIN)) 60f66f451Sopenharmony_ci 70f66f451Sopenharmony_ciconfig TAC 80f66f451Sopenharmony_ci bool "tac" 90f66f451Sopenharmony_ci default y 100f66f451Sopenharmony_ci help 110f66f451Sopenharmony_ci usage: tac [FILE...] 120f66f451Sopenharmony_ci 130f66f451Sopenharmony_ci Output lines in reverse order. 140f66f451Sopenharmony_ci*/ 150f66f451Sopenharmony_ci 160f66f451Sopenharmony_ci#define FOR_tac 170f66f451Sopenharmony_ci#include "toys.h" 180f66f451Sopenharmony_ci 190f66f451Sopenharmony_ciGLOBALS( 200f66f451Sopenharmony_ci struct double_list *dl; 210f66f451Sopenharmony_ci) 220f66f451Sopenharmony_ci 230f66f451Sopenharmony_cistatic void do_tac(char **pline, long len) 240f66f451Sopenharmony_ci{ 250f66f451Sopenharmony_ci if (pline) { 260f66f451Sopenharmony_ci dlist_add(&TT.dl, *pline); 270f66f451Sopenharmony_ci *pline = 0; 280f66f451Sopenharmony_ci } else while (TT.dl) { 290f66f451Sopenharmony_ci struct double_list *dl = dlist_lpop(&TT.dl); 300f66f451Sopenharmony_ci 310f66f451Sopenharmony_ci xprintf("%s", dl->data); 320f66f451Sopenharmony_ci free(dl->data); 330f66f451Sopenharmony_ci free(dl); 340f66f451Sopenharmony_ci } 350f66f451Sopenharmony_ci} 360f66f451Sopenharmony_ci 370f66f451Sopenharmony_civoid tac_main(void) 380f66f451Sopenharmony_ci{ 390f66f451Sopenharmony_ci loopfiles_lines(toys.optargs, do_tac); 400f66f451Sopenharmony_ci} 41