Class: Unicoder::Builder::Emoji

Inherits:
Object
  • Object
show all
Includes:
Unicoder::Builder
Defined in:
lib/unicoder/builders/emoji.rb

Constant Summary collapse

REVERSE_PROPERTY_NAMES = 
{
  "Emoji" => :E,
  "Emoji_Modifier_Base" => :B,
  "Emoji_Modifier" => :M,
  "Emoji_Component" => :C,
  "Emoji_Presentation" => :P,
  "Extended_Pictographic" => :X,
}

Instance Attribute Summary

Attributes included from Unicoder::Builder

#formats, #index, #option

Instance Method Summary collapse

Methods included from Unicoder::Builder

#assign, #assign_codepoint, build, #export, #initialize, #meta, #parse_file

Instance Method Details

#initialize_index ⇒ Object 



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# File 'lib/unicoder/builders/emoji.rb', line 15

def initialize_index
  @index = {
    PROPERTIES: {},
    FLAGS: [],
    TAGS: [],
    KEYCAPS: [],
    ZWJ: [],
    SD: [],
    LIST: {},
  }
end

#parse! ⇒ Object 



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# File 'lib/unicoder/builders/emoji.rb', line 27

def parse!
  parse_file :emoji_data, :line, regex: /^(?<codepoints>\S+?) +; (?<property>\S+) *#/ do |line|
    if line["codepoints"]['..']
      codepoints = Range.new(*line["codepoints"].split('..').map{ |codepoint|
        codepoint.to_i(16)
      })
    else
      codepoints = [line["codepoints"].to_i(16)]
    end

    codepoints.each{ |codepoint|
      @index[:PROPERTIES][codepoint] ||= []
      @index[:PROPERTIES][codepoint] << (REVERSE_PROPERTY_NAMES[line["property"]] || line["property"])
    }
  end

  parse_file :emoji_sequences, :line, regex: /^(?<codepoints>.+?)\s*; RGI_Emoji_Flag_Sequence/ do |line|
    codepoints = line["codepoints"].split
    @index[:FLAGS] << codepoints.map{|e| e.to_i(16)}
  end

  parse_file :emoji_sequences, :line, regex: /^(?<codepoints>.+?)\s*; RGI_Emoji_Tag_Sequence/ do |line|
    codepoints = line["codepoints"].split
    @index[:TAGS] << codepoints.map{|e| e.to_i(16)}
  end

  parse_file :emoji_sequences, :line, regex: /^(?<codepoints>.+?)\s*; Emoji_Keycap_Sequence/ do |line|
    @index[:KEYCAPS] << line["codepoints"].split[0].to_i(16)
  end

  parse_file :emoji_zwj_sequences, :line, regex: /^(?!#)(?<codepoints>.+?)\s*;/ do |line|
    codepoints = line["codepoints"].split
    @index[:ZWJ] << codepoints.map{|e| e.to_i(16)}
  end

  parse_file :valid_subdivisions, :xml do |xml|
    subdivisions = []
    xml.css('[idStatus="regular"], [idStatus="deprecated"]').each{ |id|
      subdivisions += id.text.split
    }
    @index[:SD] = subdivisions.uniq
  end

  parse_file :emoji_test, :line, regex: /^(?:# (?<sub>sub)?group: (?<group_name>.*)$)|(?:(?<codepoints>.+?)\s*; fully-qualified )/ do |line|
    if line["group_name"]
      if !line["sub"]
        @current_group_name = line["group_name"]
        @index[:LIST][@current_group_name] = {}
      else
        @current_subgroup_name = line["group_name"]
        @index[:LIST][@current_group_name][@current_subgroup_name] = []
      end
    else
      codepoints = line["codepoints"].split
      @index[:LIST][@current_group_name][@current_subgroup_name] << codepoints.map{|e| e.to_i(16)}.pack("U*")
    end
  end
end