kmx.io/kmxgit/lib/pygmentize.ex

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• Hash : 15ff463c
  Author : Thomas de Grivel
  Date : 2022-05-26T13:19:02
  

  use prismjs for syntactic coloration

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• lib/pygmentize.ex

• defmodule Pygmentize do
  
    require Logger
  
    def random_string() do
      :crypto.strong_rand_bytes(16)
      |> Base.url_encode64()
    end
  
    def lexer(filename) do
      cmd = "pygmentize"
      args = ["-N", filename |> String.replace(~r/ /, "_")]
      Logger.info(inspect([cmd | args]))
      {out, status} = System.cmd(cmd, args)
      case status do
        0 -> out |> String.trim()
        _ -> ""
      end
    end
  
    @deprecated "use prismjs"
    def html(content, filename) do
      lexer = lexer(filename)
      cmd = "./bin/size #{byte_size(content)} pygmentize -l #{lexer} -f html"
      Logger.info("EXEC #{cmd}")
      port = Port.open({:spawn, cmd}, [:binary, :use_stdio, :exit_status, :stderr_to_stdout])
      Port.monitor(port)
      send(port, {self(), {:command, content}})
      html_port(content, port, [])
    end
  
    def html_port(content, port, acc) do
      receive do
        {^port, {:exit_status, 0}} ->
          acc |> Enum.reverse() |> Enum.join()
        {^port, {:exit_status, _status}} ->
          #IO.inspect("pygmentize exited with status #{status}")
          nil
        {^port, {:data, data}} ->
          html_port(content, port, [data | acc])
        {:DOWN, _, :port, ^port, _reason} ->
          #IO.inspect({:down, reason})
          acc |> Enum.reverse() |> Enum.join()
        _x ->
          #IO.inspect(x)
          html_port(content, port, acc)
      after 1000 ->
          result = acc |> Enum.reverse() |> Enum.join()
          if result == "" do
            nil
          else
            result
          end
      end
    end
  end
  

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