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README

GObject Introspection
=====================
The goal of the project is to describe the APIs and  collect them in
a uniform, machine readable format.

GIR XML format
==============

There's an XML format called GIR used by GObjectIntrospection.
The purpose of it is to provide a common structure to access the complete
available API that a library or other unit of code exports.
It is meant to be language agnostic using namespaces to separate
core, language or library specific functionality.
There are currently only C based tools that work on the format, but it's
meant to be usable to use in other situations, for instance to/from another
set of languages.

Typelib
=======

The typelib is a to disk version of the GIR designed to be fast, memory
efficient and complete enough so that language bindings can be written
on top of it without other sources of information.
It is normally compiled from a GIR when a library/program is installed and
accessed from the language binding or another application who wishes to
use the information.

Tools
=====

Three tools are shipped with GObject Introspection:
- g-ir-compile, a typelib compiler. It converts one or more GIR files
  into one or more typelib blobs. It can either emit the raw typelib
  blob or C code (--code).
- g-ir-generate, an GIR generator, using the repository API. It generates
  GIR files from binary typelib which can be in a shared object, or a raw
  typelib blob.
- g-ir-scanner, a tool which generates GIR XML files by parsing headers
  and introspecting GObject based libraries.
- g-ir-doc-tool, generates Mallard files that can be viewed with yelp or
  rendered to HTML with yelp-build from yelp-tools.

API library
===========

There's also a C based library called libgirepository which provides
an API to access to the typelib metadata. It also contains an API to
invoke functions, given the function info object. The implementation is
based on libffi (3.0 or higher of libffi required, can be found at
http://sourceware.org/libffi).

There are a number of GIR test files in tests/, and a script to do
roundtrip tests (GIR -> typelib -> GIR).

Helping out
===========
The introspection framework needs a lot more work, see TODO.

Homepage
========
http://live.gnome.org/GObjectIntrospection

Reporting bugs
==============
Bugs should be reported in http://bugzilla.gnome.org/, the glib product and
the introspection component.

Contact
=======
Mail: gtk-devel-list@gnome.org
IRC: #introspection@irc.gnome.org
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