Class: Esvg::Svgs

Inherits:
Object
  • Object
show all
Includes:
Utils
Defined in:
lib/esvg/svgs.rb

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from Utils

#attributes, #compress, #dasherize, #sort, #sub_path

Constructor Details

#initialize(options = {}) ⇒ Svgs

Returns a new instance of Svgs.



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# File 'lib/esvg/svgs.rb', line 14

def initialize(options={})
  @config = options
  @symbols = []
  @svgs = []
  @last_read = 0
  read_cache

  load_files
end

Instance Attribute Details

#config ⇒ Object (readonly)

Returns the value of attribute config.



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# File 'lib/esvg/svgs.rb', line 12

def config
  @config
end

#symbols ⇒ Object (readonly)

Returns the value of attribute symbols.



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# File 'lib/esvg/svgs.rb', line 11

def symbols
  @symbols
end

Instance Method Details

#build ⇒ Object 



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# File 'lib/esvg/svgs.rb', line 55

def build

  paths = []

  if config[:core]
    path = File.join config[:assets], "_esvg.js"
    write_file path, js_core
    paths << path
  end

  @svgs.each do |file|
    write_file file.path, js(file.embed)

    puts "Writing #{file.path}" if config[:print]
    paths << file.path

    if !file.asset && config[:gzip] && gz = compress(file.path)
      puts "Writing #{gz}" if config[:print]
      paths << gz
    end
  end

  write_cache
  paths
end

#build_paths(names = nil) ⇒ Object 



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# File 'lib/esvg/svgs.rb', line 112

def build_paths(names=nil)
  buildable_svgs(names).map{ |f| File.basename(f.path) }
end

#buildable_svgs(names = nil) ⇒ Object 



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# File 'lib/esvg/svgs.rb', line 135

def buildable_svgs(names=nil)
  find_svgs(names).reject(&:asset)
end

#cache_stale? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/esvg/svgs.rb', line 105

def cache_stale?
  path = File.join(config[:temp], config[:cache_file])

  # No cache file exists or cache file is older than a new symbol
  !File.exist?(path) || File.mtime(path).to_i < @symbols.map(&:mtime).sort.last
end

#embed_script(names = nil) ⇒ Object

Embed only build scripts



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# File 'lib/esvg/svgs.rb', line 94

def embed_script(names=nil)
  embeds = buildable_svgs(names).map(&:embed)

  write_cache if cache_stale?

  if !embeds.empty?
    "<script>#{js(embeds.join("\n"))}</script>"
  end

end

#find_svgs(names = nil) ⇒ Object 



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# File 'lib/esvg/svgs.rb', line 129

def find_svgs(names=nil)
  return @svgs if names.nil? || names.empty?

  @svgs.select { |svg| svg.named?(names) }
end

#find_symbol(name, fallback = nil) ⇒ Object 



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# File 'lib/esvg/svgs.rb', line 116

def find_symbol(name, fallback=nil)
  # Ensure that file changes are picked up in development
  load_files unless Esvg.rails? && Rails.env.production?

  name = get_alias dasherize(name)

  if svg = @symbols.find { |s| s.name == name }
    svg
  elsif fallback
    find_symbol(fallback)
  end
end

#load_files ⇒ Object 



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# File 'lib/esvg/svgs.rb', line 24

def load_files
  return if (Time.now.to_i - @last_read) < config[:throttle_read]

  files = Dir[File.join(config[:source], '**/*.svg')].uniq.sort

  if files.empty? && config[:print]
    puts "No svgs found at #{config[:source]}"
    return
  end

  # Remove deleted files
  @symbols.reject(&:read).each { |s| @symbols.delete(s) }

  files.each do |path|
    unless @symbols.find { |s| s.path == path }
      @symbols << Symbol.new(path, config)
    end
  end

  @svgs.clear

  sort(@symbols.group_by(&:group)).each do |name, symbols|
    @svgs << Svg.new(name, symbols, config)
  end

  @last_read = Time.now.to_i

  puts "Read #{@symbols.size} files from #{config[:source]}" if config[:print]

end

#read_cache ⇒ Object 



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# File 'lib/esvg/svgs.rb', line 86

def read_cache
  (YAML.load(read_tmp config[:cache_file]) || []).each do |c|
    config[:cache] = c
    @symbols << Symbol.new(c[:path], config)
  end
end

#write_cache ⇒ Object 



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# File 'lib/esvg/svgs.rb', line 81

def write_cache
  puts "Writing cache" if config[:print]
  write_tmp config[:cache_file], @symbols.map(&:data).to_yaml
end