[Imgcif-l] CBF adds new lines to character data

[Michael Blum]

Hi Herb et al,

For testing our production of CBF files, I am converting our marccd  
frames to CBF,  converting the CBF back to marccd, and
then doing a "diff" between the original and final marccd frame  
files.  All interactions with the CBF file and data are done using
CBFlib.

I am having trouble getting some string values  back intact.

Long comments  (strings) that are written to the CBF using  
set_value()  get newlines  (or carriage returns) added to them in the  
CBF file.
When the text is extracted again, using cbf_get_value(),  it has the  
extra newlines it.  The original strings may or may not have their own  
newlines.  The added newlines seem to be "escaped', using '\', but  
neither the escapes nor the  escaped newlines  get removed from the  
string.

This a little more than just a cosmetic issue, as sometimes we have  
formatted text in the comments, with columns that line up and
we would like to get the text back in a readable format.


two real examples using CBFlib v0.7.9 on a redhat 5.2 linux box.
( BTW, CBFlib 0.7.9 writes "0.7.8" into the header prologue! )

--------------------------------
This is OK:

C-string input:
"file comments for a blank image on the marMosaic simulator with dummy  
values"

CBF result:  (with cbf_set_value() )
_diffrn_data_frame.details^M
  'file comments for a blank image on the marMosaic simulator with  
dummy values'^M
^M

C-string result of reading CBF:  (with cbf_get_value())
"file comments for a blank image on the marMosaic simulator with dummy  
values"
--------------------------------
--------------------------------
This is NOT OK:

C-string input:
"dataset comments for a blank image on the marMosaic simulator with  
dummy values"

CBF result:  ( of cbf_set_value() )
_diffrn_measurement.details^M
;\
dataset comments for a blank image on the marMosaic simulator with\
  dummy values\
;

C-string result of parsing CBF:  (with cbf_get_value())
"\
dataset comments for a blank image on the marMosaic simulator with\
  dummy values\"

--------------------------------



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Michael L. Blum                    Toll Free: 877-627-XRAY (627-9729)
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