[File] [PATCH] of Magdir/archive for newer Corel Draw; *.cdr *.cdt *.cdrt

[Christos Zoulas]

On Aug 10,  3:14am, joerg.jen.der.ek at gmx.net (=?UTF-8?Q?J=c3=b6rg_Jenderek?=) wrote:
-- Subject: [File] [PATCH] of Magdir/archive for newer Corel Draw; *.cdr *.cd

| Hello,
| some weeks ago i handled some newer Corel Drawings. I run file command
| version 5.37 on such Corel Drawings with name extension cdr, cdt and
| cdrt for template. With -k -m Magdir/archive options i get an output
| like:
| 
| 14-CMYKpages2VorschauUmriss.cdr: Zip data (MIME type
| 		"application/x-vnd.corel.draw.document+zip"?)
| 15-CMYKpages2VorschauUmriss.cdr: Zip data (MIME type
| 		"application/x-vnd.corel.draw.document+zip"?)
| 16-DentistEmbedFontsCMX.cdr:     Zip data (MIME type
| 		"application/x-vnd.corel.draw.document+zip"?)
| 17-spray_flowers.cdr:            Zip data (MIME type
| 		"application/x-vnd.corel.zcf.draw.document+zip"?)
| coreldraw2019-v14.cdrt:          Zip data (MIME type
| 		"application/x-vnd.corel.draw.template+zip"?)
| coreldraw2019-v15.cdrt:          Zip data (MIME type
| 		"application/x-vnd.corel.draw.template+zip"?)
| coreldraw2019-v16.3.cdrt:        Zip data (MIME type
| 		"application/x-vnd.corel.draw.template+zip"?)
| coreldraw2019-v17.cdrt:          Zip data (MIME type
| 		"application/x-vnd.corel.zcf.draw.template+zip"?)
| coreldraw2019-v19_2017.cdr:      Zip data (MIME type
| 		"application/x-vnd.corel.zcf.draw.document+zip"?)
| coreldraw2019-v20_2018.cdr:      Zip data (MIME type
| 		"application/x-vnd.corel.zcf.draw.document+zip"?)
| coreldraw2019-v21.cdr:           Zip data (MIME type
| 		"application/x-vnd.corel.zcf.draw.document+zip"?)
| coreldraw2019-v21.cdrt:          Zip data (MIME type
| 		"application/x-vnd.corel.zcf.draw.template+zip"?)
| drawX8.cdr:                      Zip data (MIME type
| 		"application/x-vnd.corel.zcf.draw.document+zip"?)
| 
| Such samples are only recognized as generic ZIP archive with
| unrecognized MIME type starting with application/ .
| 
| Furthermore with --extension option only ??? is displayed. And with -i
| option only application/zip is displayed.
| 
| Most information can be found on CorelDraw page on Wikipedia. So i add
| a comment line:
|  # URL:	http://en.wikipedia.org/wiki/CorelDRAW
| 
| According to Wikipedia there exist 3 different file formats for Corel
| CDR files. Til version 2 proprietary file format is used that is
| recognizable by the first two bytes of the file being "WL" and is not
| detected by file command. From Version 3 til 13 the file format
| changed to a Resource Interchange File Format (RIFF) container and
| partly detected by file command. From version X4 (14) on, the CDR file
| is a ZIP-compressed directory of several files, which are handled here
| .
| 
| So i add in Magdir/archive after EPUB document entry lines for
| inspected Corel Draw samples. The mime type start with
| "application/x-vnd.corel". This is now detected by magic line
|  >>50	string	x-vnd.corel.	 Corel
| 
| Afterwards add remaining mime type parts, which are different
| depending on version and file type by code segment
|  >>>62	string	draw.document+zip	Draw drawing, version 14-16
|  !:mime	application/x-vnd.corel.draw.document+zip
|  !:ext	cdr
|  >>>62	string	draw.template+zip	Draw template, version 14-16
|  !:mime	application/x-vnd.corel.draw.template+zip
|  !:ext	cdrt
|  >>>62	string	zcf.draw.document+zip	Draw drawing, version 17-21
|  !:mime	application/x-vnd.corel.zcf.draw.document+zip
|  !:ext	cdr
|  >>>62	string	zcf.draw.template+zip	Draw template, version 17-21
|  !:mime	application/x-vnd.corel.zcf.draw.template+zip
|  !:ext	cdt/cdrt
| 
| At this point the message starting with phrase "Zip data (MIME type"
| still appears, because the branch to handle remaining unrecognized ZIP
| archives with mime type starting with "application/" are done in a
| specific way. That is is to exclude all ZIP archives with known mime
| type and then displaying mentioned phrase part. This looks like:
|  >>50		string	!epub+zip
|  >>>50		string	!vnd.oasis.opendocument.
|  >>>>50		string	!vnd.sun.xml.
|  >>>>>50	string	!vnd.kde.
|  >>>>>>38	regex	[!-OQ-~]+	Zip data (MIME type "%s"?)
| 
| Of course i can add an additional line before regex expression to
| exclude Corel Draw like
|  >>>>>>50	string	!x-vnd.corel.
| 
| Instead i use another way. After handling ZIP archives with known
| mime types match the remaining unrecognized by "default" test. This
| now looks:
|  >>50		default	x			Zip data
|  >>>38		regex	[!-OQ-~]+		(MIME type "%s"?)
| 
| After applying the above mentioned modifications by patch
| file-5.37-archive-coreldraw.diff then i get a more precise output like
| :
| 14-CMYKpages2VorschauUmriss.cdr: Corel Draw drawing, version 14-16
| 15-CMYKpages2VorschauUmriss.cdr: Corel Draw drawing, version 14-16
| 16-DentistEmbedFontsCMX.cdr:     Corel Draw drawing, version 14-16
| 17-spray_flowers.cdr:            Corel Draw drawing, version 17-21
| coreldraw2019-v14.cdrt:          Corel Draw template,
| 				 version 14-16
| coreldraw2019-v15.cdrt:          Corel Draw template,
| 				 version 14-16
| coreldraw2019-v16.3.cdrt:        Corel Draw template,
| 				 version 14-16
| coreldraw2019-v17.cdrt:          Corel Draw template,
| 				 version 17-21
| coreldraw2019-v19_2017.cdr:      Corel Draw drawing, version 17-21
| coreldraw2019-v20_2018.cdr:      Corel Draw drawing, version 17-21
| coreldraw2019-v21.cdr:           Corel Draw drawing, version 17-21
| coreldraw2019-v21.cdrt:          Corel Draw template,
| 				 version 17-21
| drawX8.cdr:                      Corel Draw drawing, version 17-21
| 
| 
| 
| I hope my diff file can be applied in future version of
| file utility.

Applied, thanks!

christos