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Duskmoon UI component library for Phoenix LiveView
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lib/mix/tasks/icons.bundle.ex
defmodule Mix.Tasks.Icons.Bundle do
@moduledoc """
Bundles individual SVG icon files into compressed ETF files for Hex publishing.
This reduces thousands of individual SVG files (which blow up Hex metadata)
into two compact files: `priv/static/mdi_icons.etf.gz` and `priv/static/bsi_icons.etf.gz`.
## Usage
mix icons.bundle
Run this before `mix hex.publish`. It is included in the `prepublish` alias.
"""
use Mix.Task
@shortdoc "Bundle SVG icons into compressed ETF files"
@impl Mix.Task
def run(_args) do
app_dir = Application.app_dir(:phoenix_duskmoon)
# Source priv/static (used by hex.build for packaging)
src_static = Path.join(File.cwd!(), "priv/static")
# Build priv/static (used by Application.app_dir at runtime)
build_static = Path.join(app_dir, "priv/static")
for {svg_subdir, filename} <- [
{"mdi/svg", "mdi_icons.etf.gz"},
{"bsi/svg", "bsi_icons.etf.gz"}
] do
bundle_icons(
Path.join(app_dir, "priv/#{svg_subdir}"),
Path.join(src_static, filename),
Path.join(build_static, filename)
)
end
end
defp bundle_icons(svg_dir, src_path, build_path) do
icon_map =
svg_dir
|> File.ls!()
|> Enum.filter(&String.ends_with?(&1, ".svg"))
|> Map.new(fn filename ->
name = String.trim_trailing(filename, ".svg")
content = File.read!(Path.join(svg_dir, filename))
inner =
content
|> String.replace(~r/<svg[^>]+>/, "")
|> String.replace("</svg>", "")
{name, String.trim(inner)}
end)
data = :erlang.term_to_binary(icon_map)
compressed = :zlib.gzip(data)
for path <- [src_path, build_path] do
path |> Path.dirname() |> File.mkdir_p!()
File.write!(path, compressed)
end
Mix.shell().info(
"Bundled #{map_size(icon_map)} icons into #{src_path} (#{byte_size(compressed)} bytes)"
)
end
end