kmx.io/kmxgit/lib/pygmentize.ex

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• Hash : b5e65900
  Author : Thomas de Grivel
  Date : 2022-03-18T17:53:10
  

  use port and size to pygmentize content

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• lib/pygmentize.ex

• defmodule Pygmentize do
  
    def random_string() do
      :crypto.strong_rand_bytes(16)
      |> Base.url_encode64()
    end
  
    def lexer(filename) do
      {out, status} = System.cmd("pygmentize", ["-N", filename |> String.replace(~r/ /, "_")])
      case status do
        0 -> out |> String.trim()
        _ -> ""
      end
    end
      
    def html(content, filename) do
      lexer = lexer(filename)
      cmd = "./size #{byte_size(content)} pygmentize -l #{lexer} -f html"
      IO.inspect(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}")
          content
        {^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 ->
          html_port(content, port, acc)
      end
    end
  end
  

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