# This example illustrates the use of inherit_from to inherit body attribute
# values from another body.
###############################################################################
#+begin_src cfengine3
bundle agent __main__
{
  files:
      "$(this.promise_filename).txt"
        content => "Hello World$(const.n)2$(const.n)3$(const.n)4$(const.n)half-way
6$(const.n)7$(const.n)8$(const.n)9$(const.n)Byeeeeeee",
        create => "true";

  reports:
      "The first 3 lines of this file are:"
        printfile => head_n( "$(this.promise_filename).txt", "3" );

      "The whole file contains:"
        printfile => cat( "$(this.promise_filename).txt" );
}

body printfile head_n(file, lines)
{
      # Sets file_to_print the same as cat
        inherit_from => cat( $(file) );

      # Overrides number_of_lines from cat
        number_of_lines => "$(lines)";
}
body printfile cat(file)
{
        file_to_print   => "$(file)";
        number_of_lines => "inf";
}
###############################################################################
#+begin_src example_output
#@ ```
#@ R: The first 3 lines of this file are:
#@ R: Hello World
#@ R: 2
#@ R: 3
#@ R: The whole file contains:
#@ R: Hello World
#@ R: 2
#@ R: 3
#@ R: 4
#@ R: half-way
#@ R: 6
#@ R: 7
#@ R: 8
#@ R: 9
#@ R: Byeeeeeee
#@ ```
#+end_src