jargon

Tim Keal's "token" function

Sep 13th, 2020
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  1. function token(subject as string,sep() as string=",",index as string="1") as string
  2.     dim as string buffer,Ln
  3.     dim as long o,t,i
  4.     dim as long s(lbound(sep,1) to ubound(sep,1))
  5.    
  6.     buffer=subject
  7.     t=0
  8.     i=val(index)
  9.    
  10.     if val(index)>0 then
  11.    
  12.         do
  13.             t=t+1
  14.            
  15.             for n=lbound(sep,1) to ubound(sep,1)
  16.                 s(n)=instr(1,buffer,sep(n))
  17.                 Ln=mid(buffer,o+len(sep(n)))
  18.                 buffer=mid(buffer,o+len(sep(n)))
  19.             next n
  20.            
  21.             for n=lbound(sep,1) to ubound(sep,1)
  22.                 if s(n)<o then
  23.                     o=s(n)
  24.                     d=n
  25.                 end if
  26.             next n
  27.            
  28.             Ln=mid(buffer,o+len(sep(d)))
  29.             buffer=mid(buffer,o+len(sep(d)))
  30.        
  31.         loop until t=val(index)
  32.        
  33.         token=Ln
  34.        
  35.     elseif index="ct" then
  36.        
  37.         do
  38.             t=t+1
  39.            
  40.             for n=lbound(sep,1) to ubound(sep,1)
  41.                 s(n)=instr(1,buffer,sep(n))
  42.             next n
  43.            
  44.             for n=lbound(sep,1) to ubound(sep,1)
  45.                 if s(n)<o then
  46.                     o=s(n)
  47.                     d=n
  48.                 end if
  49.             next n
  50.            
  51.             Ln=mid(buffer,o+len(s(d)))
  52.             buffer=mid(buffer,o+len(s(d)))
  53.  
  54.         loop until o=0
  55.        
  56.         token=str(t)
  57.    
  58.     end if
  59.    
  60. end function
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