libmawk

If you are interested in the project, you may want to download the sources.

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() - leaving the choice to the application to implement async main loop, threads or multiple processes with IPC
• 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
• virtual arrays: the application may create "builtin" arrays which with hooks (C function callbacks) on set/get/etc.; this allows the application to implement arrays with side effects
• save/load precompiled (binary) scripts
• accounting of memory allocation, optional limitation of memory allocation, per script
• 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 (for modular scripts and awk libraries)
  • compile-time configuration for avoiding floating point - in which case all numerics are integers (default setting is floating point with doubles, this is only an option)
  • compile-time option to avoid any code that would fork() or exec()
• language fixes and unified operation on POSIX unspecified behavior:
  • ENVIRON[] is inherited by children processes (both system() and getline-style calls); ENVIRON[] is a per script instance array
  • floating point: support for NaN on all platforms; on some exotic platforms (some 80's and 90's UNIX systems) this is achieved by wrappers around match calls

License

Contact