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annotate toys/other/tac.c @ 694:786841fdb1e0

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Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style. The actual code should be the same afterward, this is just cosmetic refactoring.
author Rob Landley <rob@landley.net>
date Tue, 13 Nov 2012 17:14:08 -0600
parents 6df4ccc0acbe
children f7eaff0c8d0c
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
Rob Landley <rob@landley.net>
parents: 656
diff changeset
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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parents: 656
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8 bool "tac"
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parents: 656
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9 default y
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
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parents: 656
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10 help
786841fdb1e0 Reindent to two spaces per level. Remove vi: directives that haven't worked right in years (ubuntu broke its' vim implementation). Remove trailing spaces. Add/remove blank lines. Re-wordwrap in places. Update documentation with new coding style.
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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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parents: 656
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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 int len;
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28 if (!(c = get_line(fd))) break;
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30 len = strlen(c);
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31 if (len && c[len-1]=='\n') c[len-1] = 0;
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parents: 656
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32 temp = xmalloc(sizeof(struct arg_list));
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parents: 656
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33 temp->next = list;
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parents: 656
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34 temp->arg = c;
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parents: 656
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35 list = temp;
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parents: 656
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36 }
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37
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parents: 656
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38 // Play them back.
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parents: 656
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39 while (list) {
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parents: 656
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40 struct arg_list *temp = list->next;
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41 xputs(list->arg);
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parents: 656
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42 free(list->arg);
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parents: 656
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43 free(list);
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parents: 656
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44 list = temp;
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45 }
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46 }
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47
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48 void tac_main(void)
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49 {
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50 loopfiles(toys.optargs, do_tac);
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51 }