Last change
on this file since 30903 was 30903, checked in by davidb, 8 years ago |
Vagrant provisioning files for a 4-node Hadoop cluster. See README.txt for more details
|
File size:
1.0 KB
|
Line | |
---|
1 | #
|
---|
2 | # unique.rb
|
---|
3 | #
|
---|
4 |
|
---|
5 | module Puppet::Parser::Functions
|
---|
6 | newfunction(:unique, :type => :rvalue, :doc => <<-EOS
|
---|
7 | This function will remove duplicates from strings and arrays.
|
---|
8 |
|
---|
9 | *Examples:*
|
---|
10 |
|
---|
11 | unique("aabbcc")
|
---|
12 |
|
---|
13 | Will return:
|
---|
14 |
|
---|
15 | abc
|
---|
16 |
|
---|
17 | You can also use this with arrays:
|
---|
18 |
|
---|
19 | unique(["a","a","b","b","c","c"])
|
---|
20 |
|
---|
21 | This returns:
|
---|
22 |
|
---|
23 | ["a","b","c"]
|
---|
24 | EOS
|
---|
25 | ) do |arguments|
|
---|
26 |
|
---|
27 | raise(Puppet::ParseError, "unique(): Wrong number of arguments " +
|
---|
28 | "given (#{arguments.size} for 1)") if arguments.size < 1
|
---|
29 |
|
---|
30 | value = arguments[0]
|
---|
31 |
|
---|
32 | unless value.is_a?(Array) || value.is_a?(String)
|
---|
33 | raise(Puppet::ParseError, 'unique(): Requires either ' +
|
---|
34 | 'array or string to work with')
|
---|
35 | end
|
---|
36 |
|
---|
37 | result = value.clone
|
---|
38 |
|
---|
39 | string = value.is_a?(String) ? true : false
|
---|
40 |
|
---|
41 | # We turn any string value into an array to be able to shuffle ...
|
---|
42 | result = string ? result.split('') : result
|
---|
43 | result = result.uniq # Remove duplicates ...
|
---|
44 | result = string ? result.join : result
|
---|
45 |
|
---|
46 | return result
|
---|
47 | end
|
---|
48 | end
|
---|
49 |
|
---|
50 | # vim: set ts=2 sw=2 et :
|
---|
Note:
See
TracBrowser
for help on using the repository browser.