[Imgcif-l] CBF adds new lines to character data
Michael Blum
blum at rayonix.com
Thu Oct 16 00:52:58 BST 2008
Thanks Herb - I'll switch to using _widefile - that should solve my
problem.
But why doesn't cbflib "unfold" the lines again when it reads them?
Isn't the point of
escaping the extra newlines so they can be recognized and removed?
Michael
On Oct 15, 2008, at 6:32 PM, Herbert J. Bernstein wrote:
> There are two flavors of CIF -- the original 80 character line
> length CIFs that can be read by all parsers, and the newer 2048
> character line length CIFS that can be read by most newer parsers.
> CBFlib can handle either line length, but, if you are in the 80
> character mode and give it longer lines, it folds them with the
> backslash escape. To avoid this, you need to tell it you want
> to use the longer line length, using cbf_write_widefile rather
> than cbf_write_file, and cbf_read_widefile instead of cbf_read_file.
>
> =====================================================
> Herbert J. Bernstein, Professor of Computer Science
> Dowling College, Kramer Science Center, KSC 121
> Idle Hour Blvd, Oakdale, NY, 11769
>
> +1-631-244-3035
> yaya at dowling.edu
> =====================================================
>
> On Wed, 15 Oct 2008, Michael Blum wrote:
>
>> 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\"
>>
>> --------------------------------
>>
>>
>>
>> Note NEW Company name and email address!
>> _______________
>> Michael L. Blum Toll Free: 877-627-XRAY (627-9729)
>> Rayonix, LLC Tel: 847-869-1548
>> 1880 Oak Avenue Fax: 847-869-1587
>> Evanston, IL 60201 Email: blum at rayonix.com
>> USA WWW: www.rayonix.com
>>
>>
>>
>>
>>
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Note NEW Company name and email address!
_______________
Michael L. Blum Toll Free: 877-627-XRAY (627-9729)
Rayonix, LLC Tel: 847-869-1548
1880 Oak Avenue Fax: 847-869-1587
Evanston, IL 60201 Email: blum at rayonix.com
USA WWW: www.rayonix.com
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