Escrito is (will be) an interpeter for the PostScript language written in pure lua code. Its default output device generates Portable Document Format (PDF) operators, making it ideally suitable for handling PostScript code within LuaTeX.
Using a little bit of lua glue code, it will become possible to do the following things in LuaTeX that were previously only doable via complex workarounds:
Not yet, the project is still in the embryonic stage. The brave of heart can download the source from the repository, though.
My presentation for BachoTeX 2010 is online.
The repository does contain both a lua and a ConTeXt test file (in tests/) that should give an idea of the planned interface, but no formal documentation has been written yet.
The current Escrito code can fetched from the SCM tab of the supelec project. If you want to help out, just use the supelec 'Request to join project' button.
There is a joint developers / users mailing list running at supelec also. Subscription page
The luatex tracker keeps track of escrito bug and feature request reports.
Escrito will be released under the Simplified BSD license:
Copyright 2010 Taco Hoekwater Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. THIS SOFTWARE IS PROVIDED BY
``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Please use the Escrito mailing list for contacting me (or fetch my email address via my supelec account profile).