Module: JsonMinify

Defined in:
lib/json_minify.rb,
lib/json_minify/version.rb

Constant Summary collapse

VERSION = 
"0.1.0"

Instance Method Summary collapse

Instance Method Details

#minify(str) ⇒ Object 



6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
 
# File 'lib/json_minify.rb', line 6

def minify(str)
  ss, buf = StringScanner.new(str), ''

  until ss.eos?
    # Remove whitespace
    if s = ss.scan(/\s+/)

    # Scan punctuation
    elsif s = ss.scan(/[{},:\]\[]/)
      buf << s

    # Scan strings
    elsif s = ss.scan(/"(.*?[^\\])?"/)
      buf << s

    # Scan reserved words
    elsif s = ss.scan(/(true|false|null)/)
      buf << s

    # Scan numbers
    elsif s = ss.scan(/-?\d+([.]\d+)?([eE][-+]?[0-9]+)?/)
      buf << s

    # Remove C++ style comments
    elsif s = ss.scan(%r<//>)
      ss.scan_until(/(\r?\n|$)/)

    # Remove C style comments
    elsif s = ss.scan(%r'/[*]')
      ss.scan_until(%r'[*]/') or raise SyntaxError, "Unterminated /*...*/ comment - #{ss.rest}"

    # Anything else is invalid JSON
    else
      raise SyntaxError, "Unable to pre-scan string: #{ss.rest}"
    end
  end
  buf
end

#minify_parse(buf) ⇒ Object 



45
46
47
 
# File 'lib/json_minify.rb', line 45

def minify_parse(buf)
  MultiJson.load(minify(buf))
end

#minify_pretty(buf) ⇒ Object 



49
50
51
 
# File 'lib/json_minify.rb', line 49

def minify_pretty(buf)
  MultiJson.dump(minify_parse(buf), pretty: true)
end