User Manual
Advanced Topics
Lua Filter

Lua Filter / Preprocessing

Sometimes you need to transform data before creating the PDF – convert CSV to XML, validate input, or run an XSLT transformation. XTS supports Lua scripts that run before the publishing process.

Running a Lua script

Via command line:

xts --filter myfile.lua

Or via configuration file:

filter = "myfile.lua"

The script executes before PDF generation. It must be within the XTS search path.

Available modules

  • runtime – Project settings, file lookup, external commands
  • xml – Create, read, and transform XML files
  • csv – Read CSV files
  • xlsx – Read Excel spreadsheets
  • http – HTTP requests