RosettaCodeData/Task/Align-columns/Amazing-Hopper/align-columns.hopper

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#define IGet(__N__,__X__) [__N__]SGet(__X__)
#include <hbasic.h>
#define MAX_LINE 1000
Begin
Option Stack 15
Declare as Numeric ( fd, i, index, max token )
as Numeric ( num tokens, size Column, tCells )
as Alpha ( line )
as Numeric ( display Left, display Right, display Center )
GetParam(script, file to edit, separator)
// get statistics of file: #lines, #total chars, line more long, and num tokens from first line.
Token Sep( separator )
Stat( file to edit, dats )
// declare arrays to work:
Dim ( IGet(1,dats), Add(IGet(4,dats),10) ) for Fill Array("",cells)
Clear(dats)
MStore ( cells, display Left, display Right, display Center )
// read each line as array, get # of elements, and put into array cells:
Open(OPEN_READ, file to edit ) (fd)
When( File Error ){ Stop }
index=1
While Not Eof(fd)
ReadRow(MAX_LINE)(fd) and Copy to (line); get Length, and Move to (num tokens)
Set Interval [index, 1:num tokens]; Take( line ) and SPut(cells)
When ( var( max token) Is Lt (num tokens) ) { max token = num tokens }
++index
Wend
Close(fd)
// formatting...
For Up( i:=1, max token, 1 )
Set Interval [1:end,i], and Let ( size Column := MaxValue( Len(Get(cells)) ) Plus(1) )
Let ( tCells := Get(cells) )
LPad$( " ", size Column, tCells ), and Put(display Left)
RPad$( " ", size Column, tCells ), and Put(display Right)
CPad$( " ", size Column, tCells ), and Put(display Center)
Next
// display:
Token Sep ("")
Print("Left Pad:\n", display Left, Newl, "Right Pad:\n", display Right, Newl, "Center Pad:\n", display Center,Newl)
End