Mercurial > hg > toybox
annotate toys/echo.c @ 156:1e8f4b05cb65
Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
tweaks.
author | Rob Landley <rob@landley.net> |
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date | Thu, 15 Nov 2007 18:30:30 -0600 |
parents | 116405f248cb |
children | 25447caf1b4b |
rev | line source |
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71
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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changeset
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1 /* vi: set sw=4 ts=4: */ |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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2 /* |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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3 * echo.c - echo supporting -n and -e. |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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4 */ |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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5 |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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6 #include "toys.h" |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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7 |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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8 int echo_main(void) |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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9 { |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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10 int i = 0; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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changeset
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11 char *arg, *from = "\\abfnrtv", *to = "\\\a\b\f\n\r\t\v"; |
156
1e8f4b05cb65
Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
Rob Landley <rob@landley.net>
parents:
72
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12 |
71
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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changeset
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13 for (;;) { |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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14 arg = toys.optargs[i]; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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changeset
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15 if (!arg) break; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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16 if (i++) xputc(' '); |
72
116405f248cb
Comment and whitespace cleanups
Rob Landley <rob@landley.net>
parents:
71
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17 |
116405f248cb
Comment and whitespace cleanups
Rob Landley <rob@landley.net>
parents:
71
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18 // Handle -e |
156
1e8f4b05cb65
Remove trailing whitespace (thanks to Charlie Shepherd), and a couple comment
Rob Landley <rob@landley.net>
parents:
72
diff
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19 |
71
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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20 if (toys.optflags&2) { |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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changeset
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21 int c, j = 0; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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22 for (;;) { |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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23 c = arg[j++]; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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24 if (!c) break; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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25 if (c == '\\') { |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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26 char *found; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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27 int d = arg[j++]; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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28 |
72
116405f248cb
Comment and whitespace cleanups
Rob Landley <rob@landley.net>
parents:
71
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29 // handle \escapes |
71
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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30 |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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31 if (d) { |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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32 found = strchr(from, d); |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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changeset
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33 if (found) c = to[found-from]; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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changeset
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34 else if (d == 'c') goto done; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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35 else if (d == '0') { |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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36 c = 0; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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37 while (arg[j]>='0' && arg[j]<='7') |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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38 c = (c*8)+arg[j++]-'0'; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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39 } |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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40 } |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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41 } |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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42 xputc(c); |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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43 } |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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44 } else xprintf("%s", arg); |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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45 } |
72
116405f248cb
Comment and whitespace cleanups
Rob Landley <rob@landley.net>
parents:
71
diff
changeset
|
46 |
71
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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47 // Output "\n" if no -n |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
diff
changeset
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48 if (!(toys.optflags&1)) xputc('\n'); |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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49 done: |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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50 xflush(); |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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51 return 0; |
40103a3ddcb0
Helps to "hg add" echo.c. Also, implement \0123 escapes for -e.
Rob Landley <rob@landley.net>
parents:
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52 } |