No text string defined issue

Comments

• Matthias

  November 2009 edited November 2009

  Hi Chung,

  Your file is probably correct - that is a weakness of the OASIS reader.
  Basically the problem is that text strings can be associated with integer ID's which save bytes in the OASIS stream.

  The OASIS specification permits ID's being associated with strings after the ID's are used. Usually however, the strings are known for a given ID because the string to ID association happens in the file before the text objects are specified. KLayout relies on this fact altough there is no guarantee by the OASIS specification. In your case this assumption seems not to be valid. Frankly, I have not heard of such a case before.

  I'll try to fix that in the next release. However right now, there is no easy workaround. If you are not interested in text objects, you could replace these lines in dbOASISReader.cc (around line 1490):

  if (tid == m_textstrings.end ()) {
    error (tl::sprintf (tl::translate ("No text string defined for id %ld (must be declared before text is used)").c_str (), id));
  }
  mm_text_string = tid->second;
  

  by:

  if (tid != m_textstrings.end ()) {
    mm_text_string = tid->second;
  }
  

  You should then disable reading of texts in the reader options because the text strings will not be valid.

  Matthias
• phlion

  November 2009 edited November 2009

  Hi Matthias
  
  We tried to modify the code of dbOASISReader.cc to avoid the "No text string" error, and another issue appeared:
  
  Modal variable accessed before being defined: text-string (position=4125,cell=$130)
  
  We found the error printing statement in the dbOASIS.h file, and edit the code from:
  
  if (mp_diag) {
  mp_diag->error (tl::translate ("Modal variable accessed before being defined: ") + m_name);
  } else {
  tl_assert (false);
  }
  
  to:
  
  if (! mp_diag) {
  tl_assert (false);
  }
  
  Finally we were able to open this OASIS file, however all the text items disappeared and only could be found as a null string text item.
  
  --
  chhung
• Matthias

  November 2009 edited November 2009

  Hi Chhung (really with two 'h'?),

  I fixed the problem and provided a new release 0.18.2 (see download page).
  This version should fix your problem without the need of patching anything.

  Best regards,

  Matthias
• phlion

  November 2009 edited November -1

  Hi Matthias
  
  I compiled the new release v0.18.2 and it really fixed the text reading issue, thank you so much~ (Y)
  
  The chhung means a Chinese name (Chi-Hsian-Hung) from Taiwan. :)
  
  Best Regards,