Bcopy » History » Version 2
Per Amundsen, 02/08/2014 10:26 PM
1 | 1 | Per Amundsen | */bcopy [-zc] <&binvar> <N> <&binvar> <S> <M>* |
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2 | |||
3 | Copies <M> bytes from position <S> in the second &binvar to the first &binvar at position <N>. |
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4 | This can also be used to copy overlapping parts of a &binvar to itself. |
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5 | |||
6 | *Switches* |
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7 | |||
8 | -z - The bytes in the second &binvar that is copied are zero-filled after the copy. |
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9 | -c - The first &binvar is chopped to <N> + <M>. |
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10 | |||
11 | *Parameters* |
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12 | |||
13 | <&binvar> - Target &binvar to copy to. |
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14 | <N> - Target position in the first &binvar to copy to. |
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15 | <&binvar> - Source &binvar to copy from. |
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16 | <S> - Source position to copy from. |
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17 | <M> - Number of bytes to copy. |
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18 | |||
19 | *Example* |
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20 | |||
21 | 2 | Per Amundsen | <pre> |
22 | 1 | Per Amundsen | alias /example { |
23 | ;Create a binary variable and assign it some text |
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24 | bset -t &example 1 This is a test! |
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25 | |||
26 | ;Copy from 'example' from the 11th byte 10 bytes onward |
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27 | ;Zero-fill the part that was copied |
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28 | bcopy -z &example2 1 &example 11 10 |
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29 | |||
30 | ;Print out &example's content (up to the first null) |
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31 | echo -a $bvar(&example, 1-).text |
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32 | |||
33 | ;Print out &example2's content |
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34 | echo -a $bvar(&example2, 1-).text |
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35 | } |
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36 | 2 | Per Amundsen | </pre> |