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Merge pull request #1 from mveytsman/mv/caching
Return to compile-time generation
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defmodule Heroicons.Generator do | ||
defmacro __using__(icon_dir: icon_dir) do | ||
icon_paths = | ||
Path.absname(icon_dir, :code.priv_dir(:heroicons)) | ||
|> Path.join("*.svg") | ||
|> Path.wildcard() | ||
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require Phoenix.Component | ||
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if function_exported?(Phoenix.Component, :assigns_to_attributes, 2) do | ||
Module.put_attribute(__CALLER__.module, :assign_mod, Phoenix.Component) | ||
Module.put_attribute(__CALLER__.module, :assigns_to_attrs_mod, Phoenix.Component) | ||
else | ||
Module.put_attribute(__CALLER__.module, :assign_mod, Phoenix.LiveView) | ||
Module.put_attribute(__CALLER__.module, :assigns_to_attrs_mod, Phoenix.LiveView.Helpers) | ||
end | ||
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for path <- icon_paths do | ||
generate(path) | ||
end | ||
end | ||
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@doc false | ||
def generate(path) do | ||
name = | ||
Path.basename(path, ".svg") | ||
|> String.replace("-", "_") | ||
|> String.to_atom() | ||
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doc = """ | ||
![](assets/#{Path.relative_to(path, :code.priv_dir(:heroicons))}) {: width=24px} | ||
## Examples | ||
Use as a `Phoenix.Component` | ||
<.#{name} /> | ||
<.#{name} class="h-6 w-6 text-gray-500" /> | ||
or as a function | ||
<%= #{name}() %> | ||
<%= #{name}(class: "h-6 w-6 text-gray-500") %> | ||
""" | ||
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quote do | ||
@doc unquote(doc) | ||
def unquote(name)(assigns_or_opts \\ []) | ||
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def unquote(name)(var!(assigns)) when is_map(var!(assigns)) do | ||
var!(attrs) = @assigns_to_attrs_mod.assigns_to_attributes(var!(assigns)) | ||
var!(assigns) = @assign_mod.assign(var!(assigns), :attrs, var!(attrs)) | ||
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EEx.compile_string("<svg {@attrs}" <> Heroicons.IconCache.icon_body(unquote(path)), | ||
engine: Phoenix.LiveView.HTMLEngine, | ||
file: __ENV__.file, | ||
line: __ENV__.line + 1, | ||
module: __ENV__.module, | ||
indentation: 0, | ||
assigns: var!(assigns) | ||
) | ||
end | ||
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def unquote(name)(opts) when is_list(opts) do | ||
attrs = | ||
for {k, v} <- opts do | ||
safe_k = | ||
k |> Atom.to_string() |> String.replace("_", "-") |> Phoenix.HTML.Safe.to_iodata() | ||
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safe_v = v |> Phoenix.HTML.Safe.to_iodata() | ||
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{:safe, [?\s, safe_k, ?=, ?", safe_v, ?"]} | ||
end | ||
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{:safe, | ||
[ | ||
"<svg", | ||
Phoenix.HTML.Safe.to_iodata(attrs), | ||
" ", | ||
Heroicons.IconCache.icon_body(unquote(path)) | ||
]} | ||
end | ||
end | ||
end | ||
end |
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Original file line number | Diff line number | Diff line change |
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defmodule Heroicons.IconCache do | ||
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@doc "Get's an icon's body from the filesystem" | ||
# TODO implement ETS-based caching & benchmark | ||
def icon_body(path) do | ||
icon = File.read!(path) | ||
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<<"<svg ", body::binary>> = icon | ||
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body | ||
end | ||
end |
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