On Monday, 23 October 2023 at 17:36:09 BST, Werner LEMBERG <w...@gnu.org> 
wrote:
 
> > I recently had to extract a TrueType font from a TTC font collection
> > as part of fixing bugs in the podofo library[1].

> In general, FreeType is not the right tool for such operations.
> FreeType is a *rendering* library that provides a thin API for
> extracting SFNT tables, mainly the ones FreeType isn't parsing by
> itself.  As Behdad mentioned, the `fonttools` package should help you
> with your task.
Besides fonttools, this isn't heavily advertised, but Font Validator's 
ironpython scripting interface has an example script called "ttc-splitter.py" 
for doing exactly that. And a "ttc-merger.py" script too, as well as a 
"ttx-l.py" script, which does what fonttools "ttx -l" does, ie listing font 
tables. They are located in Font-Validator/bin/scripting-examples/ .
FontVal contains very little font-modification/writing related code as it is a 
font checking tool, but somehow Microsoft had included some font-writing code 
in there, for unknown purposes. The scripting interface uses Ironpython (an 
implementation of python interpreter running on microsoft Dot Net / xamarin 
mono) and we bundle the iron python interpreter, actually. But AFAIK I am the 
only person who uses that part of FontVal as part of the bulk half-yearly-ish 
testing on all fedora-shipped fonts.

  

Reply via email to