[File] [PATCH] of Magdir/fonts for OpenType Font data *.otf

[Jörg Jenderek]

Hello,

some days ago i handled some OpenDocument Formula Template with file
name extension otf. That extension is also used for OpenType Font data.
When running file command version 5.38 on such fonts i get an output
like:
cmunbmr.otf:               OpenType font data
FiraSansOT-Bold.otf:       OpenType font data
Montserrat-Regular.otf:    OpenType font data
NotoSansCJKjp-Regular.otf: OpenType font data
NotoSansCJKkr-Regular.otf: OpenType font data
NotoSansCJKsc-Regular.otf: OpenType font data

No further information about fonts are shown.
Furthermore with --extension option ??? is shown. With --apple option
UNKNUNKN is displayed and with -i option a non official mime type
application/vnd.ms-opentype is shown.

On Wikipedia i found a page about OpenType Font. So i add that page
inside Magdir/fonts as reference by comment line like:
 # URL: https://en.wikipedia.org/wiki/OpenType

The current magic lines look like
0	string		OTTO		OpenType font data
!:mime application/vnd.ms-opentype

The OpenType Font is similar to TrueType font (*.ttf). So the
functions used for TTF files can also be used for OTF samples. So
description, apple and mime type and file name extension are now
shown by calling subroutine sfnt-font. This now becomes
 0	string		OTTO
 >0	use		sfnt-font
 >0	use		sfnt-names
At the end additional informations like copyright notes and font name
are printed by calling sub routine sfnt-names.

After applying the above mentioned modifications by patch
file-5.38-fonts-otf.diff then i get an output with more information like:

cmunbmr.otf:               OpenType Font data,
	17 tables, 1st "BDF ", 20 names, Macintosh
FiraSansOT-Bold.otf:       OpenType Font data,
	11 tables, 1st "CFF ", 28 names, Macintosh,
	Digitized data copyright (c) 2012-2013,
	The Mozilla Foundation and Telefonica S.A.Fira Sans OTB
Montserrat-Regular.otf:    OpenType Font data,
	12 tables, 1st "CFF ", 26 names, Macintosh,
	Copyright © 2014 by Julieta Ulanovsky. All rights reserved.
	MontserratRegular1.000;UKWN;Montserr
NotoSansCJKjp-Regular.otf: OpenType Font data, digitally signed,
	16 tables, 1st "BASE", 32 names, Macintosh,
	Copyright © 2014, 2015 Adobe Systems Incorporated
	(http://www.adobe.com/).
	Noto Sans CJK JP Regu
NotoSansCJKkr-Regular.otf: OpenType Font data, digitally signed,
	16 tables, 1st "BASE", 32 names, Macintosh,
	Copyright © 2014, 2015 Adobe Systems Incorporated
	(http://www.adobe.com/).
	Noto Sans CJK KR Regu
NotoSansCJKsc-Regular.otf: OpenType Font data, digitally signed,
	16 tables, 1st "BASE", 32 names, Macintosh,
	Copyright © 2014, 2015 Adobe Systems Incorporated
	(http://www.adobe.com/).
	Noto Sans CJK SC Regu

I hope my diff file can be applied in future version of
file utility.

With best wishes
Jörg Jenderek
--
Jörg Jenderek


-------------- next part --------------
--- file-5.38/magic/Magdir/fonts.old	2019-07-16 12:11:31 +0000
+++ file-5.38/magic/Magdir/fonts	2020-03-15 01:00:10 +0000
@@ -346,4 +346,7 @@
 # Opentype font data from Avi Bercovich
-0	string		OTTO		OpenType font data
-!:mime application/vnd.ms-opentype
+# URL: https://en.wikipedia.org/wiki/OpenType
+0	string		OTTO
+#!:mime application/vnd.ms-opentype
+>0	use		sfnt-font
+>0	use		sfnt-names