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:
1.1 KB
|
Line | |
---|
1 | #
|
---|
2 | # delete_at.rb
|
---|
3 | #
|
---|
4 |
|
---|
5 | module Puppet::Parser::Functions
|
---|
6 | newfunction(:delete_at, :type => :rvalue, :doc => <<-EOS
|
---|
7 | Deletes a determined indexed value from an array.
|
---|
8 |
|
---|
9 | *Examples:*
|
---|
10 |
|
---|
11 | delete_at(['a','b','c'], 1)
|
---|
12 |
|
---|
13 | Would return: ['a','c']
|
---|
14 | EOS
|
---|
15 | ) do |arguments|
|
---|
16 |
|
---|
17 | raise(Puppet::ParseError, "delete_at(): Wrong number of arguments " +
|
---|
18 | "given (#{arguments.size} for 2)") if arguments.size < 2
|
---|
19 |
|
---|
20 | array = arguments[0]
|
---|
21 |
|
---|
22 | unless array.is_a?(Array)
|
---|
23 | raise(Puppet::ParseError, 'delete_at(): Requires array to work with')
|
---|
24 | end
|
---|
25 |
|
---|
26 | index = arguments[1]
|
---|
27 |
|
---|
28 | if index.is_a?(String) and not index.match(/^\d+$/)
|
---|
29 | raise(Puppet::ParseError, 'delete_at(): You must provide ' +
|
---|
30 | 'non-negative numeric index')
|
---|
31 | end
|
---|
32 |
|
---|
33 | result = array.clone
|
---|
34 |
|
---|
35 | # Numbers in Puppet are often string-encoded which is troublesome ...
|
---|
36 | index = index.to_i
|
---|
37 |
|
---|
38 | if index > result.size - 1 # First element is at index 0 is it not?
|
---|
39 | raise(Puppet::ParseError, 'delete_at(): Given index ' +
|
---|
40 | 'exceeds size of array given')
|
---|
41 | end
|
---|
42 |
|
---|
43 | result.delete_at(index) # We ignore the element that got deleted ...
|
---|
44 |
|
---|
45 | return result
|
---|
46 | end
|
---|
47 | end
|
---|
48 |
|
---|
49 | # vim: set ts=2 sw=2 et :
|
---|
Note:
See
TracBrowser
for help on using the repository browser.