Bwrite » History » Version 6
Per Amundsen, 02/06/2019 08:28 PM
1 | 1 | Per Amundsen | _Added in 1.9.0_ |
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3 | 4 | Per Amundsen | */bwrite [-tac] <filename> <S> [N] <text|%var|&binvar>* |
4 | 1 | Per Amundsen | |
5 | Writes [N] bytes from <text|%var|&binvar> to the file starting at byte position <S> or 0, any existing information at this position is overwritten. |
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6 | |||
7 | *Switches* |
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8 | |||
9 | -t - Treat <text|%var|&binvar> as plain text. |
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10 | 5 | Per Amundsen | -a - Disables UTF-8 encoding of characters in the range 0-255, as long as the text contains no characters > 255. |
11 | 4 | Per Amundsen | -c - Chops the file at the end of the copied bytes. |
12 | 1 | Per Amundsen | |
13 | *Parameters* |
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14 | |||
15 | <filename> - File to modify. |
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16 | 6 | Per Amundsen | <S> - Byte position in the file to start writing to. (zero based) |
17 | 1 | Per Amundsen | [N] - Byte count from <text|%var|&binvar> to write. |
18 | 2 | Per Amundsen | <text|%var|&binvar> - Text/%variable/&binvar to write to file. |
19 | 1 | Per Amundsen | |
20 | *Example* |
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22 | <pre> |
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23 | alias example { |
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24 | ;Write some text to a file at beginning of the file |
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25 | /bwrite file.txt 0 hello there! |
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26 | |||
27 | ;Read the binary data into binary variable &tempfile |
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28 | /bread $qt(file.txt) 0 $file(file.txt).size &tempfile |
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29 | |||
30 | ;Print the binary variable data as text, outputs 'Hello there!' |
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31 | echo -ag $bvar(&tempfile, 1-).text |
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33 | ;Replace "there!" with "world!" |
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34 | /bwrite file.txt 6 world! |
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36 | ;Read the binary data into binary variable &tempfile |
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37 | /bread $qt(file.txt) 0 $file(file.txt).size &tempfile |
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38 | |||
39 | ;Print the binary variable data as text, outputs 'Hello world!' |
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40 | echo -ag $bvar(&tempfile, 1-).text |
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41 | } |
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42 | </pre> |