annotate toys/catv.c @ 562:4d802d438983

Match uint64_t with PRIu64 to avoid warnings on 64 bit builds.
author Rob Landley <rob@landley.net>
date Sat, 14 Apr 2012 21:27:00 -0500
parents 163498bf547b
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of
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1 /* vi: set sw=4 ts=4:
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2 *
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3 * cat -v implementation for toybox
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4 *
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30a6db5a95c2 Add comments about SUSv3 specs (or lack thereof).
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5 * Copyright (C) 2006, 2007 Rob Landley <rob@landley.net>
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6 *
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7 * Not in SUSv3, but see "Cat -v considered harmful" at
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8 * http://cm.bell-labs.com/cm/cs/doc/84/kp.ps.gz
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9
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163498bf547b Move NEWTOY() list from end of toylist.h to generated/newtoys.h.
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10 USE_CATV(NEWTOY(catv, "vte", TOYFLAG_USR|TOYFLAG_BIN))
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11
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12 config CATV
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13 bool "catv"
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14 default y
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15 help
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16 usage: catv [-evt] [filename...]
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17
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18 Display nonprinting characters as escape sequences. Use M-x for
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19 high ascii characters (>127), and ^x for other nonprinting chars.
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20
d4176f3f3835 Zap toys/Config.in and instead create generated/Config.in from contents of
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21 -e Mark each newline with $
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22 -t Show tabs as ^I
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23 -v Don't use ^x or M-x escapes.
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24 */
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25
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26 #include "toys.h"
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27
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28 // Callback function for loopfiles()
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29
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c983a0af6d4e Add sha1sum. (No -c mode yet.) Slight tweaks to loopfiles() too.
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30 static void do_catv(int fd, char *name)
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31 {
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32 for(;;) {
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33 int i, len;
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34
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35 len = read(fd, toybuf, sizeof(toybuf));
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36 if (len < 0) toys.exitval = EXIT_FAILURE;
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37 if (len < 1) break;
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38 for (i=0; i<len; i++) {
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39 char c=toybuf[i];
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41 if (c > 126 && (toys.optflags & 4)) {
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42 if (c == 127) {
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43 printf("^?");
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44 continue;
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45 } else {
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46 printf("M-");
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47 c -= 128;
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48 }
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49 }
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50 if (c < 32) {
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51 if (c == 10) {
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52 if (toys.optflags & 1) xputc('$');
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53 } else if (toys.optflags & (c==9 ? 2 : 4)) {
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54 printf("^%c", c+'@');
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55 continue;
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56 }
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57 }
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58 xputc(c);
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59 }
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60 }
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61 }
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62
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63 void catv_main(void)
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64 {
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65 toys.optflags^=4;
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66 loopfiles(toys.optargs, do_catv);
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67 }