Bwrite » History » Version 6
  Per Amundsen, 02/06/2019 08:28 PM 
  
| 1 | 1 | Per Amundsen | _Added in 1.9.0_ | 
|---|---|---|---|
| 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. | ||
| 6 | |||
| 7 | *Switches* | ||
| 8 | |||
| 9 | -t - Treat <text|%var|&binvar> as plain text. | ||
| 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* | ||
| 14 | |||
| 15 | <filename> - File to modify. | ||
| 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* | ||
| 21 | |||
| 22 | <pre> | ||
| 23 | alias example { | ||
| 24 | ;Write some text to a file at beginning of the file | ||
| 25 | /bwrite file.txt 0 hello there! | ||
| 26 | |||
| 27 | ;Read the binary data into binary variable &tempfile | ||
| 28 | /bread $qt(file.txt) 0 $file(file.txt).size &tempfile | ||
| 29 | |||
| 30 | ;Print the binary variable data as text, outputs 'Hello there!' | ||
| 31 | echo -ag $bvar(&tempfile, 1-).text | ||
| 32 | |||
| 33 | ;Replace "there!" with "world!" | ||
| 34 | /bwrite file.txt 6 world! | ||
| 35 | |||
| 36 | ;Read the binary data into binary variable &tempfile | ||
| 37 | /bread $qt(file.txt) 0 $file(file.txt).size &tempfile | ||
| 38 | |||
| 39 | ;Print the binary variable data as text, outputs 'Hello world!' | ||
| 40 | echo -ag $bvar(&tempfile, 1-).text | ||
| 41 | } | ||
| 42 | </pre> |