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Re: Binary file: SAT

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From Alessandro Barracco <bomastudio@gmail.com>
Newsgroups comp.lang.ruby
Subject Re: Binary file: SAT
Date Fri, 22 Apr 2011 04:51:28 -0500
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> Do not think of binary files as containing lines.  A binary file is a
> long continuous sequence of integers contained in a varying number of
> bytes.

That's OK. but the file I need to parse is a special txt file (DXF 
format) that consist of couple-of-line: the 1st is a code, that specify 
an objectt-property (the colour of a line, the center of a circle, the 
hieght of a text, etc), the 2nd is the value associated with it.
Well, there is a special object, the 3dsolid, that have 4 or 5 copules 
like above, and a long series of couple that have the 1st line always 1 
and the 2nd one as binary data.

Group code         Description
8                  Layer name
70                 Modeler format version number (currently = 1)
..                ....
1                  Proprietary data (multiple lines < 255 characters 
each)
3                  Additional lines of proprietary data (if previous 
group 1 string is greater than 255 characters)(optional)

For exanple, the following draws a line, in the layer "Walls", from the 
point (16.5, 12.5,0.0) to (46.5,12.5,0.0).

 0
LINE
  8
Walls
 10
16.5
 20
12.5
 30
0.0
 11
46.5
 21
12.5
 31
0.0


My task is to "understand" the object "3dsolid" that have also the 
"Proprietary data", ie the binary data. Searching in Google I found that 
this data are set according to the ACIS *.sab standard (the link in the 
first post), so I think I can read that binary..... isn't it?

-- 
Posted via http://www.ruby-forum.com/.

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Thread

Binary file: SAT Alessandro Barracco <bomastudio@gmail.com> - 2011-04-20 17:00 -0500
  Re: Binary file: SAT 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-20 19:02 -0500
    Re: Binary file: SAT 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-20 19:45 -0500
      Re: Binary file: SAT Roger Braun <roger@rogerbraun.net> - 2011-04-20 21:53 -0500
        Re: Binary file: SAT Alessandro Barracco <bomastudio@gmail.com> - 2011-04-21 03:06 -0500
          Re: Binary file: SAT 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-21 12:25 -0500
            Re: Binary file: SAT Alessandro Barracco <bomastudio@gmail.com> - 2011-04-22 04:51 -0500
              Re: Binary file: SAT 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-22 13:49 -0500
                Re: Binary file: SAT William Rutiser <wruyahoo05@comcast.net> - 2011-04-23 13:20 -0500
  Re: Binary file: SAT 7stud -- <bbxx789_05ss@yahoo.com> - 2011-04-21 12:53 -0500

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