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annotate toys/other/tac.c @ 1369:5ec6582aac50 draft

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Make fallocate depend on probe for libc support.
author Rob Landley <rob@landley.net>
date Sat, 28 Jun 2014 22:17:00 -0500
parents 54d248b907ed
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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parents: 656
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1 /* tac.c - output lines in reverse order
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2 *
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3 * Copyright 2012 Rob Landley <rob@landley.net>
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4
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5 USE_TAC(NEWTOY(tac, NULL, TOYFLAG_USR|TOYFLAG_BIN))
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6
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7 config TAC
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8 bool "tac"
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9 default y
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parents: 656
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10 help
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11 usage: tac [FILE...]
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12
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parents: 656
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13 Output lines in reverse order.
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14 */
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15
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16 #include "toys.h"
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17
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18 void do_tac(int fd, char *name)
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19 {
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20 struct arg_list *list = NULL;
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21 char *c;
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22
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23 // Read in lines
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24 for (;;) {
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25 struct arg_list *temp;
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26 long len;
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27
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28 if (!(c = get_rawline(fd, &len, '\n'))) break;
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30 temp = xmalloc(sizeof(struct arg_list));
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31 temp->next = list;
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32 temp->arg = c;
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33 list = temp;
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34 }
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35
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parents: 656
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36 // Play them back.
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37 while (list) {
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38 struct arg_list *temp = list->next;
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39 xprintf("%s", list->arg);
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40 free(list->arg);
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41 free(list);
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parents: 656
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42 list = temp;
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parents: 656
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43 }
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44 }
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45
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46 void tac_main(void)
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47 {
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48 loopfiles(toys.optargs, do_tac);
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49 }