Class: NameSort::Sorter

Inherits:
Object
  • Object
show all
Defined in:
lib/name_sort.rb

Constant Summary collapse

HDR = 
%w(last_name first_name gender date_of_birth favorite_color)

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Sorter

Returns a new instance of Sorter.



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

def initialize
  @names = []
end

Instance Attribute Details

#names ⇒ Object (readonly)

Returns the value of attribute names.



8
9
10
 
# File 'lib/name_sort.rb', line 8

def names
  @names
end

#parsed ⇒ Object (readonly)

Returns the value of attribute parsed.



8
9
10
 
# File 'lib/name_sort.rb', line 8

def parsed
  @parsed
end

Instance Method Details

#format_date(value) ⇒ Object 



43
44
45
46
47
48
49
 
# File 'lib/name_sort.rb', line 43

def format_date(value)
  if value.count('-') == 2
    Date.strptime(value, "%m-%d-%Y")
  elsif value.count('/') == 2
    Date.strptime(value, "%m/%d/%Y")
  end
end

#format_fields(record) ⇒ Object 



73
74
75
76
77
 
# File 'lib/name_sort.rb', line 73

def format_fields(record)
  record.map.with_index do |field,idx|
    HDR.index("date_of_birth") == idx ? field.strftime('%-m/%d/%Y') : field
  end
end

#format_for(field, value) ⇒ Object 



24
25
26
27
28
29
30
31
32
33
 
# File 'lib/name_sort.rb', line 24

def format_for(field,value)
  case field.strip()
  when 'gender'
    format_gender(value.strip())
  when 'date_of_birth'
    format_date(value.strip())
  else
    value.strip()
  end
end

#format_gender(value) ⇒ Object 



35
36
37
38
39
40
41
 
# File 'lib/name_sort.rb', line 35

def format_gender(value)
  if value.match(/^(m|male)$/i)
    "Male"
  elsif value.match(/^(f|female)$/i)
    "Female"
  end
end

#header(delimiter) ⇒ Object 



51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
 
# File 'lib/name_sort.rb', line 51

def header(delimiter)
  unless [' ','|',','].include?(delimiter)
    raise InvalidDeliminatorError
  end
  hdr = %w(last_name first_name)
  case delimiter
  when '|'
    hdr += %w(middle_initial gender favorite_color date_of_birth)
  when ' '
    hdr +=  %w(middle_initial gender date_of_birth favorite_color)
  when ','
    hdr += %w(gender favorite_color date_of_birth)
  else
    hdr
  end
end

#input(delimiter, file) ⇒ Object 



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

def input(delimiter,file)
  header_fields = header(delimiter)
  parsed = CSV.read(file, col_sep: delimiter, headers: header_fields)
  parsed.delete('middle_initial')
  data = []
  parsed.each do |line|
    data << HDR.map{|field| line[field].nil? ? nil : format_for(field,line[field]) }.compact
  end
  @names += data
end

#print_names(sort_by) ⇒ Object 



79
80
81
82
83
 
# File 'lib/name_sort.rb', line 79

def print_names(sort_by)
  sort_for(sort_by).each do |record|
    puts format_fields(record).join(" ")
  end
end

#sort_for(field) ⇒ Object 



68
69
70
71
 
# File 'lib/name_sort.rb', line 68

def sort_for(field)
  field_index = HDR.index(field)
  @names.sort_by{|n|n[field_index]}
end