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

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