Bwrite » History » Version 7
Per Amundsen, 02/15/2023 11:15 AM
| 1 | 1 | Per Amundsen | _Added in 1.9.0_ |
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| 2 | |||
| 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 | 7 | Per Amundsen | table(ktable). |
| 10 | |*Switch*|*Description*| |
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| 11 | | -t | <notextile>Treat <text|%var|&binvar> as plain text.</notextile> | |
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| 12 | | -a | Disables UTF-8 encoding of characters in the range 0-255, as long as the text contains no characters > 255. | |
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| 13 | | -c | Chops the file at the end of the copied bytes. | |
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| 14 | 1 | Per Amundsen | |
| 15 | *Parameters* |
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| 16 | |||
| 17 | 7 | Per Amundsen | table(ktable). |
| 18 | |*Parameter*|*Description*| |
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| 19 | | <filename> | File to modify. | |
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| 20 | | <S> | Byte position in the file to start writing to. (zero based) | |
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| 21 | | [N] | <notextile>Byte count from <text|%var|&binvar> to write.</notextile> | |
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| 22 | | <notextile><text|%var|&binvar></notextile> | Text/%variable/&binvar to write to file. | |
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| 23 | 1 | Per Amundsen | |
| 24 | *Example* |
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| 25 | |||
| 26 | <pre> |
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| 27 | alias example { |
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| 28 | ;Write some text to a file at beginning of the file |
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| 29 | /bwrite file.txt 0 hello there! |
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| 30 | |||
| 31 | ;Read the binary data into binary variable &tempfile |
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| 32 | /bread $qt(file.txt) 0 $file(file.txt).size &tempfile |
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| 33 | |||
| 34 | ;Print the binary variable data as text, outputs 'Hello there!' |
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| 35 | echo -ag $bvar(&tempfile, 1-).text |
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| 36 | |||
| 37 | ;Replace "there!" with "world!" |
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| 38 | /bwrite file.txt 6 world! |
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| 39 | |||
| 40 | ;Read the binary data into binary variable &tempfile |
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| 41 | /bread $qt(file.txt) 0 $file(file.txt).size &tempfile |
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| 42 | |||
| 43 | ;Print the binary variable data as text, outputs 'Hello world!' |
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| 44 | echo -ag $bvar(&tempfile, 1-).text |
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| 45 | } |
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| 46 | </pre> |