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Terminal emulator library for the BEAM — libghostty-vt NIFs with OTP integration.

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ghostty examples html_recorder.exs
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examples/html_recorder.exs 

# Record command output as a styled HTML file.

# Preserves all colors, bold, italic, underline, 24-bit color, etc.

#

#   mix run examples/html_recorder.exs "ls -la --color=always"

#   mix run examples/html_recorder.exs "mix test --color"

#   open output.html



[cmd | _] = System.argv()



{:ok, term} = Ghostty.Terminal.start_link(cols: 120, rows: 50)



{output, _status} = System.cmd("bash", ["-c", cmd], stderr_to_stdout: true, env: [{"TERM", "xterm-256color"}])

Ghostty.Terminal.write(term, output)



{:ok, html_body} = Ghostty.Terminal.snapshot(term, :html)



html = """

<!DOCTYPE html>

<html>

<head>

  <meta charset="utf-8">

  <title>#{cmd}</title>

  <style>

    body {

      background: #1e1e2e;

      padding: 20px;

      margin: 0;

    }

    pre {

      font-family: 'JetBrains Mono', 'SF Mono', 'Fira Code', monospace;

      font-size: 14px;

      line-height: 1.4;

      color: #cdd6f4;

    }

  </style>

</head>

<body>

  <pre>#{html_body}</pre>

</body>

</html>

"""



File.write!("output.html", html)

IO.puts("Wrote output.html (#{byte_size(html)} bytes)")