Module: TagComparer

Extended by:
TagComparer
Included in:
TagComparer
Defined in:
lib/tag_comparer.rb

Overview

A comparison class that can be used to compare version numbers for software projects

Constant Summary collapse

VERSION_PREFIXES =

These are the allowed version prefixes at this time

{
  'rc' => 100, 
  'beta' => 99, 
  'b' => 99,
  'alpha' => 98,
  'a' => 98,
  'v' => 1 # makes processing easier
}

Instance Method Summary collapse

Instance Method Details

#get_latest(*args) ⇒ Object

Compares a list of version numbers and returns the latest one based on logical version numbering systems. Arguments can be arrays of strings or just strings.

Examples

get_latest(‘v1,’v2’) # returns ‘v2’ get_latest(‘v1.3.beta1’, ‘v1.3.beta2’) # returns ‘v1.3.beta2’ get_latest([‘v1.3.beta1’, ‘v1.3.rc1’, ‘v1.3.alpha1’]) # returns ‘v1.3.rc1’



25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/tag_comparer.rb', line 25

def get_latest(*args)
  tags = []
  args.each do |a|
    if a.kind_of?(Array)
      tags.push(a)
    else
      tags.push(a)
    end
  end

  tags.flatten!

  latest_tag = tags.first

  tags.each do |tag|
      latest_tag = compare_items(latest_tag, tag) >= 0 ? latest_tag : tag
  end

  latest_tag
end