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Generic parser that is used to register keywords and a corresponding function that will be executed when that keyword is encountered in the command stream (either from plugins or via streaming)

To use a parser do the following:

  1. Define a structure that will be used to share user state across calls (user defined void *user)
  2. Initialize the parser using parser_init
  3. Register keywords with their associated callback function using parser_add_keyword
  4. Start a loop for as long there is input (or parser_action returns error)
    1. Fetch the next line using parser_next (if needed)
    2. Process the line using parser_action
  5. Release the parser using parser_destroy
  6. Release the user structure

See examples in receiver.c / pluginsd_parser.c

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