Module: Lorentz::Glob

Included in:
Keys
Defined in:
lib/lorentz/glob.rb

Class Method Summary collapse

Class Method Details

.compile(source, case_sensitive = false) ⇒ Object

jacked from github.com/karottenreibe/joker & specifically karottenreibe.github.com/2009/12/03/inside-the-joker/



4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
 
# File 'lib/lorentz/glob.rb', line 4

def compile(source, case_sensitive=false)
  ptr = 0
  compiled = '^'
  while ptr < source.length
    snip = source[ptr..ptr]
    case snip
    when '\\'
      lookahead = source[ptr+1..ptr+1]
      case snip
      when '\\\\', '\\?', '\\*'
        compiled << snip << lookahead
      else
        compiled << Regexp.quote(lookahead)
      end
      ptr += 1
    when '?' then compiled << '.'
    when '*' then compiled << '.*'
    when '[' then compiled << '['
    when ']' then compiled << ']'
    else          compiled << Regexp.quote(snip)
    end
    ptr += 1
  end
  compiled << '$'
  Regexp.compile(compiled, case_sensitive)
end