aboutsummaryrefslogtreecommitdiff
path: root/source/_helpers.rb
blob: 7c3fcc1f6ca7426553672449d1923908ef43dc0d (plain)
1
2
3
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
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
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
gem 'activesupport', "2.3.5"
require 'active_support'
require 'rubypants'

module Helpers
  module EscapeHelper
    HTML_ESCAPE = { '&' => '&amp; ',  '>' => '&gt;',   '<' => '&lt;', '"' => '&quot;' }
    JSON_ESCAPE = { '&' => '\u0026 ', '>' => '\u003E', '<' => '\u003C' }

    # A utility method for escaping HTML tag characters.
    # This method is also aliased as <tt>h</tt>.
    #
    # In your ERb templates, use this method to escape any unsafe content. For example:
    #   <%=h @person.name %>
    #
    # ==== Example:
    #   puts html_escape("is a > 0 & a < 10?")
    #   # => is a &gt; 0 &amp; a &lt; 10?
    def html_escape(html)
      html.to_s.gsub(/[&"><]/) { |special| HTML_ESCAPE[special] }
    end
    def escape_once(html)
      html.to_s.gsub(/[\"><]|&(?!([a-zA-Z]+|(#\d+));)/) { |special| HTML_ESCAPE[special] }
    end
    alias h escape_once

    # A utility method for escaping HTML entities in JSON strings.
    # This method is also aliased as <tt>j</tt>.
    #
    # In your ERb templates, use this method to escape any HTML entities:
    #   <%=j @person.to_json %>
    #
    # ==== Example:
    #   puts json_escape("is a > 0 & a < 10?")
    #   # => is a \u003E 0 \u0026 a \u003C 10?
    def json_escape(s)
      s.to_s.gsub(/[&"><]/) { |special| JSON_ESCAPE[special] }
    end

    alias j json_escape
  end
  include EscapeHelper

  module ParamsHelper
    def params
      @params ||= begin
        q = request.query.dup
        q.each { |(k,v)| q[k.to_s.intern] = v }
        q
      end
    end
  end
  include ParamsHelper

  module TagHelper
    def content_tag(name, content, html_options={})
      %{<#{name}#{html_attributes(html_options)}>#{content}</#{name}>}
    end

    def tag(name, html_options={})
      %{<#{name}#{html_attributes(html_options)} />}
    end

    def image_tag(src, html_options = {})
      tag(:img, html_options.merge({:src=>src}))
    end

    def javascript_tag(content = nil, html_options = {})
      content_tag(:script, javascript_cdata_section(content), html_options.merge(:type => "text/javascript"))
    end

    def link_to(name, href, html_options = {})
      html_options = html_options.stringify_keys
      confirm = html_options.delete("confirm")
      onclick = "if (!confirm('#{html_escape(confirm)}')) return false;" if confirm
      content_tag(:a, name, html_options.merge(:href => href, :onclick=>onclick))
    end

    def link_to_function(name, *args, &block)
      html_options = {}
      html_options = args.pop if args.last.is_a? Hash
      function = args[0] || ''
      onclick = "#{"#{html_options[:onclick]}; " if html_options[:onclick]}#{function}; return false;"
      href = html_options[:href] || '#'
      content_tag(:a, name, html_options.merge(:href => href, :onclick => onclick))
    end

    private

      def cdata_section(content)
        "<![CDATA[#{content}]]>"
      end

      def javascript_cdata_section(content) #:nodoc:
        "\n//#{cdata_section("\n#{content}\n//")}\n"
      end

      def html_attributes(options)
        unless options.blank?
          attrs = []
          options.each_pair do |key, value|
            if value == true
              attrs << %(#{key}="#{key}") if value
            else
              attrs << %(#{key}="#{value}") unless value.nil?
            end
          end
          " #{attrs.sort * ' '}" unless attrs.empty?
        end
      end
  end
  include TagHelper

  def to_html_email(address)
    email = string_to_html(address)
    "<a href=\"#{string_to_html('mailto:')}#{email}\">#{email}</a>"
  end

  def string_to_html(s)
    s.strip.unpack("C*").map{|ch| "&#" + ch.to_s + ";" }.to_s
  end

  def show_part (file)
    data = ''
    f = File.open(Dir.pwd+"/source/"+file)
    f.each_line do |line|
      data += line
    end
    data
  end

  def shorten_words (string, word_limit = 25)
    words = string.split(/\s/)
    if words.size >= word_limit
      words[0,(word_limit-1)].join(" ") + '&hellip;'
    else
      string
    end
  end

  def shorten (string, char_limit = 55)
    chars = string.scan(/.{1,1}/)
    if chars.size >= char_limit
      chars[0,(char_limit-1)].join + '&hellip;'
    else
      "blah2"
    end
  end

  def absolute_url(input, url)
    input.gsub(/(href|src)(\s*=\s*)(["'])(\/.*?)\3/) { $1 + $2 + $3 + url + $4 + $3 }
  end

  def rp(input)
    RubyPants.new(input).to_html
  end
  def style_amp(input)
    input.gsub(" & "," <span class='amp'>&</span> ")
  end

  module PartialsHelper

    # A very hackish way to handle partials.  We'll go with it till it breaks...
    def include(partial_name)
      file_ext = partial_name[(partial_name.index('.') + 1)..partial_name.length]
      contents = IO.read("source/_includes/#{partial_name}")
      case file_ext
      when 'haml'
        Haml::Engine.new(contents).render(binding)
      when 'textile'
        RedCloth.new(contents).to_html
      when 'markdown'
        RDiscount.new(contents).to_html
      else
        contents
      end
    end
  end

  include PartialsHelper

end

class String
  def titlecase
    small_words = %w(a an and as at but by en for if in of on or the to v v. via vs vs.)

    x = split(" ").map do |word|
      # note: word could contain non-word characters!
      # downcase all small_words, capitalize the rest
      small_words.include?(word.gsub(/\W/, "").downcase) ? word.downcase! : word.smart_capitalize!
      word
    end
    # capitalize first and last words
    x.first.to_s.smart_capitalize!
    x.last.to_s.smart_capitalize!
    # small words after colons are capitalized
    x.join(" ").gsub(/:\s?(\W*#{small_words.join("|")}\W*)\s/) { ": #{$1.smart_capitalize} " }
  end

  def titlecase!
    replace(titlecase)
  end

  def smart_capitalize
    # ignore any leading crazy characters and capitalize the first real character
    if self =~ /^['"\(\[']*([a-z])/
      i = index($1)
      x = self[i,self.length]
      # word with capitals and periods mid-word are left alone
      self[i,1] = self[i,1].upcase unless x =~ /[A-Z]/ or x =~ /\.\w+/
    end
    self
  end

  def smart_capitalize!
    replace(smart_capitalize)
  end
end