Module: KuaiJieQian::Utils

Defined in:
lib/kuai_jie_qian/utils.rb

Class Method Summary collapse

Class Method Details

.html_to_pdf(html_file_stream) ⇒ Object 



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# File 'lib/kuai_jie_qian/utils.rb', line 19

def self.html_to_pdf(html_file_stream)
  kit = PDFKit.new(html_file_stream)
  kit.to_pdf
end

.pdf_to_png(pdf_file_path, png_path_dir, png_name) ⇒ Object 



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# File 'lib/kuai_jie_qian/utils.rb', line 24

def self.pdf_to_png(pdf_file_path, png_path_dir, png_name)
  pngs = []

  pdf = Magick::ImageList.new(pdf_file_path){self.background_color = 'white'}

  pdf.each_with_index{ |obj, i|
    png_file_fullname ="#{png_path_dir}/#{png_name}_#{i+1}.png"
    res = obj.write(png_file_fullname)
    pngs << {fullname: png_file_fullname, successd: !res.nil?}
  }

  # pdf = Grim.reap(pdf_file_path)

  # KuaiJieQian.logger.info pdf_file_path
  # KuaiJieQian.logger.info pdf

  # count = pdf.count

  # KuaiJieQian.logger.info count

  # (0..count-1).each{ |i|
  #   png_file_fullname ="#{png_path_dir}/#{png_name}_#{i+1}.png"
  #   KuaiJieQian.logger.info i
  #   successd = pdf[i].save(png_file_fullname,
  #                         {:quality => 90, :alpha => "remove", :colorspace => "RGB"})
  #   pngs << {fullname: png_file_fullname, successd: successd}
  # }

  pngs
end

.symbolize_keys(hash) ⇒ Hash

把 hash 中的 key，都转化为 symbol 类型

Parameters:

  • hash (Hash) —

    需要更改的 hash

Returns:

  • (Hash) —

    更改后的 hash



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# File 'lib/kuai_jie_qian/utils.rb', line 11

def self.symbolize_keys(hash)
  new_hash = {}
  hash.each do |key, value|
    new_hash[(key.to_sym rescue key) || key] = value
  end
  new_hash
end