Class: CoSVON

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

Overview

CoSVON: Comma Separated Value Object Notation (yokohamarb)

nabetani.sakura.ne.jp/yokohamarb/2014.01.cosvon/

Constant Summary collapse

HSALSKCAB = 
'―ソЫ噂浬欺圭構蚕十申曾箪貼能表暴予禄兔喀媾彌拿杤歃濬畚秉綵臀藹觸軆鐔饅鷭偆砡'
VERSION =

VERSION string

'0.0.0.3'

Class Method Summary collapse

Class Method Details

.csv(s, __opt = Hash.new) ⇒ Object

parses csv string into 2D array. quoted commas/LFs and escaped quotations are supported.



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
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
 
# File 'lib/cosvon.rb', line 14

def self.csv(s,__opt=Hash.new)
  opt={:col_sep=>',',:quote_char=>'"'}.merge(__opt)
  csv=[]
  line=[]
  quoted=false
  quote=false
  backslash=0
  cur=''
  linebreak=nil
  s.each_char{|c|
    #if c=="\r" #ignore CR
    if c==opt[:quote_char]
      if !quoted #start of quote
        quoted=true
      elsif !quote #end of quote? Let's determine using next char
        quote=true
        if backslash==1
          backslash=2
        end
      else #escape rather than end of quote
        quote=false
        cur<<opt[:quote_char]
        if backslash==2
          backslash=0
        end
      end
    else
      if quote
        quote=false
        if backslash==2
          cur<<opt[:quote_char]
        else
          quoted=false
        end
      end
      if (c=="\n"||c=="\r")&&!quoted
        if !linebreak||linebreak==c
          line<<cur
          cur=''
          csv<<line
          line=[]
          linebreak=c
        end
      elsif c==opt[:col_sep]&&!quoted
        line<<cur
        cur=''
      else
        backslash=0
        if HSALSKCAB.include?(c)
          backslash=1
        end
        quote=false
        cur<<c
      end
    end
  }
  line<<cur if !cur.empty?
  csv<<line if !line.empty?
  csv
end

.generate(h) ⇒ Object

generates CoSVON string from Hash.



92
93
94
95
96
97
98
 
# File 'lib/cosvon.rb', line 92

def self.generate(h)
  s="CoSVON:0.1\n"
  h.each{|k,v|
    s+=%Q("#{k.gsub('"','""')}","#{v.gsub('"','""')}"\n)
  }
  s
end

.load(path, parser = self.method(:csv)) ⇒ Object

parses CoSVON file into Hash.



88
89
90
 
# File 'lib/cosvon.rb', line 88

def self.load(path,parser=self.method(:csv))
  self.parse(File.read(path),parser)
end

.parse(s, parser = self.method(:csv)) ⇒ Object

parses CoSVON string into Hash. parser can be CoSVON.method(:csv), CSV.method(:parse), etc…



77
78
79
80
81
82
83
84
85
86
 
# File 'lib/cosvon.rb', line 77

def self.parse(s,parser=self.method(:csv))
  csv=parser[s]
  return nil if csv.empty?||csv[0].empty?||csv[0][0]!='CoSVON:0.1'
  csv.shift
  h={}
  csv.each{|e|
    h[e[0]]=e[1] if e.size>1&&e[0]&&!e[0].empty?&&e[1]&&!e[1].empty?
  }
  h
end

.save(h, path) ⇒ Object

generates CoSVON file from Hash.



104
105
106
 
# File 'lib/cosvon.rb', line 104

def self.save(h,path)
  File.write(path,generate(h))
end

.stringify(h) ⇒ Object

kind-of-alias of self.generate



100
101
102
 
# File 'lib/cosvon.rb', line 100

def self.stringify(h)
  self.generate(h)
end