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Bcopy » History » Revision 4

Revision 3 (Per Amundsen, 02/08/2014 11:32 PM) → Revision 4/7 (Per Amundsen, 02/08/2014 11:33 PM)

*/bcopy [-zc] -zc <&binvar> <N> <&binvar> <S> <M>* 

 Copies <M> bytes from position <S> in the second &binvar to the first &binvar at position <N>. 
 This can also be used to copy overlapping parts of a &binvar to itself. 

 *Switches* 

 -z - The bytes in the second &binvar that is copied are zero-filled after the copy. 
 -c - The first &binvar is chopped to <N> + <M>. 

 *Parameters* 

 <&binvar> - Target &binvar to copy to. 
 <N> - Target position in the first &binvar to copy to. 
 <&binvar> - Source &binvar to copy from. 
 <S> - Source position to copy from. 
 <M> - Number of bytes to copy. 

 *Example* 

 <pre> 
 alias /example { 
   ;Create a binary variable and assign it some text 
   bset -t &example 1 This is a test! 
 
   ;Copy from 'example' from the 11th byte 10 bytes onward 
   ;Zero-fill the part that was copied 
   bcopy -z &example2 1 &example 11 10 
 
   ;Print out &example's content (up to the first null) 
   echo -a $bvar(&example, 1-).text 
 
   ;Print out &example2's content 
   echo -a $bvar(&example2, 1-).text  
 } 
 </pre>