Bcopy » History » Version 7
Per Amundsen, 02/14/2023 05:10 PM
1 | 5 | Per Amundsen | _Added in 1.9.0_ |
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2 | |||
3 | 4 | Per Amundsen | */bcopy [-zc] <&binvar> <N> <&binvar> <S> <M>* |
4 | 1 | Per Amundsen | |
5 | Copies <M> bytes from position <S> in the second &binvar to the first &binvar at position <N>. |
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6 | This can also be used to copy overlapping parts of a &binvar to itself. |
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7 | |||
8 | *Switches* |
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9 | |||
10 | 7 | Per Amundsen | table(ktable). |
11 | |*Switch*|*Description*| |
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12 | | -z | The bytes in the second &binvar that is copied are zero-filled after the copy. | |
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13 | | -c | The first &binvar is chopped to <N> + <M>. | |
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14 | 1 | Per Amundsen | |
15 | *Parameters* |
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17 | 7 | Per Amundsen | table(ktable). |
18 | |*Parameter*|*Description*| |
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19 | | <&binvar> | Target &binvar to copy to. | |
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20 | | <N> | Target position in the first &binvar to copy to. (If N = -1, bytes are appended to the destination &binvar) | |
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21 | | <&binvar> | Source &binvar to copy from. | |
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22 | | <S> | Source position to copy from. | |
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23 | | <M> | Number of bytes to copy. | |
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24 | 1 | Per Amundsen | |
25 | *Example* |
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26 | |||
27 | 2 | Per Amundsen | <pre> |
28 | 1 | Per Amundsen | alias /example { |
29 | ;Create a binary variable and assign it some text |
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30 | bset -t &example 1 This is a test! |
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31 | |||
32 | ;Copy from 'example' from the 11th byte 10 bytes onward |
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33 | ;Zero-fill the part that was copied |
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34 | bcopy -z &example2 1 &example 11 10 |
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35 | |||
36 | ;Print out &example's content (up to the first null) |
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37 | echo -a $bvar(&example, 1-).text |
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38 | |||
39 | ;Print out &example2's content |
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40 | echo -a $bvar(&example2, 1-).text |
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41 | } |
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42 | 2 | Per Amundsen | </pre> |