Class: TextInterpolator

Inherits:
Object
  • Object
show all
Defined in:
lib/text_interpolator/version.rb,
lib/text_interpolator/text_interpolator.rb

Constant Summary collapse

VERSION = 
"1.1.6"

Instance Method Summary collapse

Instance Method Details

#clear_errors ⇒ Object 



9
10
11
 
# File 'lib/text_interpolator/text_interpolator.rb', line 9

def clear_errors
  errors.clear
end

#errors ⇒ Object 



5
6
7
 
# File 'lib/text_interpolator/text_interpolator.rb', line 5

def errors
  @errors ||= []
end

#interpolate(object, env = {}) ⇒ Object 



13
14
15
16
17
18
19
20
21
22
23
 
# File 'lib/text_interpolator/text_interpolator.rb', line 13

def interpolate object, env={}
  if object.kind_of? String
    interpolate_string object, env
  elsif object.kind_of? Hash
    interpolate_hash object
  elsif object.kind_of? IO
    interpolate_io object, env
  else
    object
  end
end

#interpolate_hash(hash) ⇒ Object 



44
45
46
47
48
49
50
51
52
 
# File 'lib/text_interpolator/text_interpolator.rb', line 44

def interpolate_hash hash
  clear_errors

  content = interpolate_system_variables(hash)

  var_table = build_variables_table(content)  # one-dimensional collection of variables

  interpolate_variables(content, var_table)
end

#interpolate_io(io, env = {}) ⇒ Object 



54
55
56
57
58
59
60
61
62
63
 
# File 'lib/text_interpolator/text_interpolator.rb', line 54

def interpolate_io io, env={}
  result = ''

  io.each do |line|
    result += interpolate_string(line, env)
    result += '\n' unless io.eof?
  end

  result
end

#interpolate_string(string, env = {}) ⇒ Object 



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

def interpolate_string string, env={}
  clear_errors

  env = symbolize_keys env

  value = interpolate_system_variable string

  var_table = build_variables_table(env)  # one-dimensional collection of variables

  begin
    new_value = interpolate_variable value, var_table
  rescue KeyError => e
    new_value = string
    errors << e.message
  end

  new_value
end