301 lines
		
	
	
	
		
			8.1 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
			
		
		
	
	
			301 lines
		
	
	
	
		
			8.1 KiB
		
	
	
	
		
			Elixir
		
	
	
	
	
	
| # Pleroma: A lightweight social networking server
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| # Copyright © 2017-2018 Pleroma Authors <https://pleroma.social/>
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| # SPDX-License-Identifier: AGPL-3.0-only
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| 
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| defmodule Mix.Tasks.Pleroma.Emoji do
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|   use Mix.Task
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| 
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|   @shortdoc "Manages emoji packs"
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|   @moduledoc """
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|   Manages emoji packs
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| 
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|   ## ls-packs
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| 
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|       mix pleroma.emoji ls-packs [OPTION...]
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| 
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|   Lists the emoji packs and metadata specified in the manifest.
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| 
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|   ### Options
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| 
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|   - `-m, --manifest PATH/URL` - path to a custom manifest, it can
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|     either be an URL starting with `http`, in that case the
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|     manifest will be fetched from that address, or a local path
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| 
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|   ## get-packs
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| 
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|       mix pleroma.emoji get-packs [OPTION...] PACKS
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| 
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|   Fetches, verifies and installs the specified PACKS from the
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|   manifest into the `STATIC-DIR/emoji/PACK-NAME`
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| 
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|   ### Options
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| 
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|   - `-m, --manifest PATH/URL` - same as ls-packs
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| 
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|   ## gen-pack
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| 
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|       mix pleroma.emoji gen-pack PACK-URL
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| 
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|   Creates a new manifest entry and a file list from the specified
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|   remote pack file. Currently, only .zip archives are recognized
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|   as remote pack files and packs are therefore assumed to be zip
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|   archives. This command is intended to run interactively and will
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|   first ask you some basic questions about the pack, then download
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|   the remote file and generate an SHA256 checksum for it, then
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|   generate an emoji file list for you.
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| 
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|   The manifest entry will either be written to a newly created
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|   `index.json` file or appended to the existing one, *replacing*
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|   the old pack with the same name if it was in the file previously.
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| 
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|   The file list will be written to the file specified previously,
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|   *replacing* that file. You _should_ check that the file list doesn't
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|   contain anything you don't need in the pack, that is, anything that is
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|   not an emoji (the whole pack is downloaded, but only emoji files
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|   are extracted).
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|   """
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| 
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|   def run(["ls-packs" | args]) do
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|     Application.ensure_all_started(:hackney)
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| 
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|     {options, [], []} = parse_global_opts(args)
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| 
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|     manifest =
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|       fetch_manifest(if options[:manifest], do: options[:manifest], else: default_manifest())
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| 
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|     Enum.each(manifest, fn {name, info} ->
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|       to_print = [
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|         {"Name", name},
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|         {"Homepage", info["homepage"]},
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|         {"Description", info["description"]},
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|         {"License", info["license"]},
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|         {"Source", info["src"]}
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|       ]
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| 
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|       for {param, value} <- to_print do
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|         IO.puts(IO.ANSI.format([:bright, param, :normal, ": ", value]))
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|       end
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| 
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|       # A newline
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|       IO.puts("")
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|     end)
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|   end
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| 
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|   def run(["get-packs" | args]) do
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|     Application.ensure_all_started(:hackney)
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| 
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|     {options, pack_names, []} = parse_global_opts(args)
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| 
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|     manifest_url = if options[:manifest], do: options[:manifest], else: default_manifest()
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| 
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|     manifest = fetch_manifest(manifest_url)
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| 
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|     for pack_name <- pack_names do
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|       if Map.has_key?(manifest, pack_name) do
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|         pack = manifest[pack_name]
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|         src_url = pack["src"]
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| 
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|         IO.puts(
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|           IO.ANSI.format([
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|             "Downloading ",
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|             :bright,
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|             pack_name,
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|             :normal,
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|             " from ",
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|             :underline,
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|             src_url
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|           ])
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|         )
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| 
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|         binary_archive = Tesla.get!(client(), src_url).body
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|         archive_sha = :crypto.hash(:sha256, binary_archive) |> Base.encode16()
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| 
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|         sha_status_text = ["SHA256 of ", :bright, pack_name, :normal, " source file is ", :bright]
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| 
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|         if archive_sha == String.upcase(pack["src_sha256"]) do
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|           IO.puts(IO.ANSI.format(sha_status_text ++ [:green, "OK"]))
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|         else
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|           IO.puts(IO.ANSI.format(sha_status_text ++ [:red, "BAD"]))
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| 
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|           raise "Bad SHA256 for #{pack_name}"
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|         end
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| 
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|         # The url specified in files should be in the same directory
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|         files_url = Path.join(Path.dirname(manifest_url), pack["files"])
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| 
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|         IO.puts(
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|           IO.ANSI.format([
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|             "Fetching the file list for ",
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|             :bright,
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|             pack_name,
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|             :normal,
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|             " from ",
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|             :underline,
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|             files_url
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|           ])
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|         )
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| 
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|         files = Tesla.get!(client(), files_url).body |> Jason.decode!()
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| 
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|         IO.puts(IO.ANSI.format(["Unpacking ", :bright, pack_name]))
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| 
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|         pack_path =
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|           Path.join([
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|             Pleroma.Config.get!([:instance, :static_dir]),
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|             "emoji",
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|             pack_name
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|           ])
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| 
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|         files_to_unzip =
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|           Enum.map(
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|             files,
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|             fn {_, f} -> to_charlist(f) end
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|           )
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| 
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|         {:ok, _} =
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|           :zip.unzip(binary_archive,
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|             cwd: pack_path,
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|             file_list: files_to_unzip
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|           )
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| 
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|         IO.puts(IO.ANSI.format(["Writing emoji.txt for ", :bright, pack_name]))
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| 
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|         emoji_txt_str =
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|           Enum.map(
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|             files,
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|             fn {shortcode, path} ->
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|               emojo_path = Path.join("/emoji/#{pack_name}", path)
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|               "#{shortcode}, #{emojo_path}"
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|             end
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|           )
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|           |> Enum.join("\n")
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| 
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|         File.write!(Path.join(pack_path, "emoji.txt"), emoji_txt_str)
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|       else
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|         IO.puts(IO.ANSI.format([:bright, :red, "No pack named \"#{pack_name}\" found"]))
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|       end
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|     end
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|   end
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| 
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|   def run(["gen-pack", src]) do
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|     Application.ensure_all_started(:hackney)
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| 
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|     proposed_name = Path.basename(src) |> Path.rootname()
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|     name = String.trim(IO.gets("Pack name [#{proposed_name}]: "))
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|     # If there's no name, use the default one
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|     name = if String.length(name) > 0, do: name, else: proposed_name
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| 
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|     license = String.trim(IO.gets("License: "))
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|     homepage = String.trim(IO.gets("Homepage: "))
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|     description = String.trim(IO.gets("Description: "))
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| 
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|     proposed_files_name = "#{name}.json"
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|     files_name = String.trim(IO.gets("Save file list to [#{proposed_files_name}]: "))
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|     files_name = if String.length(files_name) > 0, do: files_name, else: proposed_files_name
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| 
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|     default_exts = [".png", ".gif"]
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|     default_exts_str = Enum.join(default_exts, " ")
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| 
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|     exts =
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|       String.trim(
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|         IO.gets("Emoji file extensions (separated with spaces) [#{default_exts_str}]: ")
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|       )
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| 
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|     exts =
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|       if String.length(exts) > 0 do
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|         String.split(exts, " ")
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|         |> Enum.filter(fn e -> e |> String.trim() |> String.length() > 0 end)
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|       else
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|         default_exts
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|       end
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| 
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|     IO.puts("Downloading the pack and generating SHA256")
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| 
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|     binary_archive = Tesla.get!(client(), src).body
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|     archive_sha = :crypto.hash(:sha256, binary_archive) |> Base.encode16()
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| 
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|     IO.puts("SHA256 is #{archive_sha}")
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| 
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|     pack_json = %{
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|       name => %{
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|         license: license,
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|         homepage: homepage,
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|         description: description,
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|         src: src,
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|         src_sha256: archive_sha,
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|         files: files_name
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|       }
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|     }
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| 
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|     tmp_pack_dir = Path.join(System.tmp_dir!(), "emoji-pack-#{name}")
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| 
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|     {:ok, _} =
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|       :zip.unzip(
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|         binary_archive,
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|         cwd: tmp_pack_dir
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|       )
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| 
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|     emoji_map = Pleroma.Emoji.make_shortcode_to_file_map(tmp_pack_dir, exts)
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| 
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|     File.write!(files_name, Jason.encode!(emoji_map, pretty: true))
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| 
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|     IO.puts("""
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| 
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|     #{files_name} has been created and contains the list of all found emojis in the pack.
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|     Please review the files in the remove those not needed.
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|     """)
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| 
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|     if File.exists?("index.json") do
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|       existing_data = File.read!("index.json") |> Jason.decode!()
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| 
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|       File.write!(
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|         "index.json",
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|         Jason.encode!(
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|           Map.merge(
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|             existing_data,
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|             pack_json
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|           ),
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|           pretty: true
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|         )
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|       )
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| 
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|       IO.puts("index.json file has been update with the #{name} pack")
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|     else
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|       File.write!("index.json", Jason.encode!(pack_json, pretty: true))
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| 
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|       IO.puts("index.json has been created with the #{name} pack")
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|     end
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|   end
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| 
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|   defp fetch_manifest(from) do
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|     Jason.decode!(
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|       if String.starts_with?(from, "http") do
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|         Tesla.get!(client(), from).body
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|       else
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|         File.read!(from)
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|       end
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|     )
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|   end
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| 
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|   defp parse_global_opts(args) do
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|     OptionParser.parse(
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|       args,
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|       strict: [
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|         manifest: :string
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|       ],
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|       aliases: [
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|         m: :manifest
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|       ]
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|     )
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|   end
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| 
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|   defp client do
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|     middleware = [
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|       {Tesla.Middleware.FollowRedirects, [max_redirects: 3]}
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|     ]
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| 
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|     Tesla.client(middleware)
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|   end
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| 
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|   defp default_manifest, do: Pleroma.Config.get!([:emoji, :default_manifest])
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| end
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