Hello trid users,
some days ago i run TrID on riff based Corel examples with name name
extension csl. Such files are only identified by riff.trid.xml as "Generic
RIFF container" ( see appended output/trid-old.txt).
According to Coreldraw X3 program this file type is "Corel Symbol Library".
So i run tridscan on samples and delete null patterns and get definition
file csl-corel.trid.xml. Some information about such graphic is found on
corel.com website inside Corel Draw product help. This is expressed by line:
<RefURL>
http://product.corel.com/help/CorelDRAW/540223850/Main/EN/Documentation/CorelDRAW-Corel-Symbol-Library-CSL.html</RefURL>
Characteristic is the second riff chunk CSL followed by 1 character in range
from '1' til '4' which indicates version.
The version is also stored by the 2 byte sized version tag vrsn. This is
expressed by XML construct:
<Bytes>7672736E02000000</Bytes>
<ASCII> v r s n</ASCII>
<Pos>12</Pos>
The used riff file format is well known, but the inner details (the data
chunk of the RIFF tags) remain proprietary and no complete or official
documentation exist. So i do not know how to distinguish exactly between
Corel Symbol Library, Drawing, Design graphics and Patterns.
So i keep no null constant byte sequences expressed by XML constructs like:
<Bytes>0000C30E0000C30E0000</Bytes>
<Pos>56</Pos>
I also keep in global string sections strings, which seems to appear in all
mentioned Corel file types by:
<String>LIST4'''CMPR</String>
<String>INFOIKEY</String>
<String>CPNG</String>
<String>ICMT</String>
<String>SUMI</String>
With the new definition files the undetected Corel CSL samples are now
recognized ( see appended output/trid-new-v.txt). TrID definitions, some
examples and output are stored in archive csl.zip. I hope that my XML file
can be used in future version of triddefs.
With best wishes
Jörg Jenderek
