libmawk

libmawk is a fork of mawk, designed for embedding in C programs. Compare and contrast with awka.

The following is from the project's homepage:

Libmawk has the following main features:

• load and run multiple awk scripts independently, in parallel
• scripts do not read stdin but a memory buffer the embedding process can fill from time to time
• running scripts in (mostly) non-blocking manner - that is, the script will not block if the process can not provide new input
• all these without threads or fork()
• call awk functions from C, using vararg for smooth integration
• call C functions from awk scripts
• resolve existing awk variables from C - read or write variables
• language extensions (both in the lib and executable version)
  • dynamic function calls (call functions by name using call() and acall())
  • dynamic variable value fetch (valueof() returns the value of a variable by name)
  • include "source.awk" allows an awk source to include another awk source

Since mawk is licensed under the GNU GPL v2 and libmawk is a fork of mawk, libmawk is licensed under the GNU GPL v2 too.