fontconfig for Golang

This package is a port from the C fontconfig library.

Its main purpose is to fetch the metadata of the fonts installed in a system, and use that database to select the best font to use given some user-specified query (name, style, weight, etc...).

Differences from the original C library

While the main fonctionnality of the original library are preserved, some simplifications have been made (mainly to avoid complex logic of file system handling).

Caching

The package drops support for advanced caching: it is deferred to the users. They can use the provided Serialize and LoadFontset functions, but its up to them to specified what to cache, when and where.

Configuration build

The main way to specify complex configurations remains the XML fontconfig format. However, it is not possible to use <include> directives. Several config files are simply added one by one.

Font directories

The XML format does not support specifying font directories. Instead, scans are explicitely triggered by the user, which provide a file (ScanFontFile), an in-memory content (ScanFontRessource) or a list of directories (ScanFontDirectories).

Dependencies

This is a pure Go implementation, which rely on fonts as a substitute of FreeType to handle the scanning of a font file.