Awk script to extract class decls from pp files

puppet-node-extract.awk

#!/usr/bin/env gawk
#
# Only print stuff inside the puppet class:
#$0 ~ /^[ \t]*$/ {on = 0}
#

BEGIN {
    cls_name="";
}

# Match closing bracket for class
$0 ~ /^}[ \t]*$/ {
    on = 0
}

on {
    print cls_name, $0
}

# Capture class name and set on = 1 so we print
match($0, /^class[ \t]*([a-z:_]+)[ \t]*{[ \t]*$/, a) { 
    cls_name = a[1]
    print "#", cls_name
    on = 1
}

run.sh

#!/bin/bash
#
# On OSX you need to brew install coreutils because BSD's awk is lacking
#
gawk -f puppet-node-extract.awk test.pp

test.pp

#
# Sample puppet class
#
class aws::qa_env_conf {

    case $::hostname {
        /^qa-(\w+)-\d+$/: {
            $game = $1
        }
    }

    file { '/root/.bashrc':
        path   => '/root/.bashrc',
        source => [
            "puppet:///modules/aws/root/qa_${game}_bashrc",
            'puppet:///modules/aws/root/qa_bashrc',
        ],
        owner  => root,
        group  => root,
        mode   => '0644',
    }

    file { '/root/.bash_profile':
        path   => '/root/.bash_profile',
        source => [
            "puppet:///modules/aws/root/${::hostname}_bash_profile",
            "puppet:///modules/aws/root/qa_${game}_bash_profile",
            'puppet:///modules/aws/root/qa_bash_profile',
        ],
        owner  => root,
        group  => root,
        mode   => '0744',
    }

    file { '/root/.bash_alias':
        path   => '/root/.bash_alias',
        source => 'puppet:///modules/aws/root/bash_alias',
        owner  => root,
        group  => root,
        mode   => '0744',
    }
}