Import

.gitignore

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+/doc/reference/
+/.yardoc/
+/pkg/
+/Gemfile.lock

.travis.yml

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+notifications:
+  email:
+    recipients:
+      - [email protected]
+rvm:
+  - 2.2
+  - 2.3.3
+  - 2.4.0

.yardopts

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+--output-dir doc/reference/en
+--markup markdown
+--markup-provider kramdown
+-
+doc/text/*

Gemfile

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+# -*- ruby -*-
+#
+# Copyright (C) 2017  Kouhei Sutou <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+source "https://rubygems.org/"
+
+gemspec
+
+base_dir = File.dirname(__FILE__)
+local_chupa_text_dir = File.join(base_dir, "..", "chupa-text")
+if File.exist?(local_chupa_text_dir)
+  gem "chupa-text", :path => local_chupa_text_dir
+end

README.md

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+# README
+
+## Name
+
+chupa-text-decomposer-mail
+
+## Description
+
+This is a ChupaText decomposer plugin for to extract text and
+meta-data from RFC 2822 formatted e-mail.
+
+You can use `mail` decomposer.
+
+## Install
+
+Install chupa-text-decomposer-mail gem:
+
+```
+% gem install chupa-text-decomposer-mail
+```
+
+Now, you can extract text and meta-data from e-mail:
+
+```
+% chupa-text document.eml
+```
+
+## Author
+
+  * Kouhei Sutou `<[email protected]>`
+
+## License
+
+LGPL 2.1 or later.
+
+(Kouhei Sutou has a right to change the license including contributed
+patches.)

Rakefile

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+# -*- ruby -*-
+#
+# Copyright (C) 2017  Kouhei Sutou <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+task :default => :test
+
+require "pathname"
+
+require "rubygems"
+require "bundler/gem_helper"
+require "packnga"
+
+base_dir = Pathname(__FILE__).dirname
+
+helper = Bundler::GemHelper.new(base_dir.to_s)
+def helper.version_tag
+  version
+end
+
+helper.install
+spec = helper.gemspec
+
+Packnga::DocumentTask.new(spec) do
+end
+
+Packnga::ReleaseTask.new(spec) do
+end
+
+desc "Run tests"
+task :test do
+  ruby("test/run-test.rb")
+end

chupa-text-decomposer-mail.gemspec

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+# -*- ruby -*-
+#
+# Copyright (C) 2017  Kouhei Sutou <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+clean_white_space = lambda do |entry|
+  entry.gsub(/(\A\n+|\n+\z)/, '') + "\n"
+end
+
+Gem::Specification.new do |spec|
+  spec.name = "chupa-text-decomposer-mail"
+  spec.version = "1.0.0"
+  spec.homepage = "https://github.com/ranguba/chupa-text-decomposer-mail"
+  spec.authors = ["Kouhei Sutou"]
+  spec.email = ["[email protected]"]
+  readme = File.read("README.md", :encoding => "UTF-8")
+  entries = readme.split(/^\#\#\s(.*)$/)
+  description = clean_white_space.call(entries[entries.index("Description") + 1])
+  spec.summary = description.split(/\n\n+/, 2).first
+  spec.description = description
+  spec.license = "LGPL-2.1+"
+  spec.files = ["#{spec.name}.gemspec"]
+  spec.files += ["README.md", "LICENSE.txt", "Rakefile", "Gemfile"]
+  spec.files += [".yardopts"]
+  spec.files += Dir.glob("lib/**/*.rb")
+  spec.files += Dir.glob("doc/text/*")
+  spec.files += Dir.glob("test/**/*")
+
+  spec.add_runtime_dependency("chupa-text")
+  spec.add_runtime_dependency("mail")
+
+  spec.add_development_dependency("bundler")
+  spec.add_development_dependency("rake")
+  spec.add_development_dependency("test-unit")
+  spec.add_development_dependency("packnga")
+  spec.add_development_dependency("kramdown")
+end

doc/text/news.md

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+# News
+
+## 1.0.0: 2017-XX-XX
+
+The first release!!!

lib/chupa-text/decomposers/mail.rb

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+# Copyright (C) 2017  Kouhei Sutou <[email protected]>
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License, or (at your option) any later version.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+require "time"
+
+require "mail"
+
+module ChupaText
+  module Decomposers
+    class Mail < Decomposer
+      registry.register("mail", self)
+
+      TARGET_EXTENSIONS = ["eml", "mew"]
+      TARGET_MIME_TYPES = ["message/rfc822"]
+      def target?(data)
+        return true if TARGET_MIME_TYPES.include?(data.mime_type)
+        return false unless TARGET_EXTENSIONS.include?(data.extension)
+
+        data.uri.fragment.nil?
+      end
+
+      def decompose(data)
+        mail = ::Mail.new(data.body)
+        mail.body.parts.each_with_index do |part, i|
+          body = part.body.decoded
+          body.force_encoding(part.charset)
+
+          part_data = TextData.new(body)
+          part_data.uri = "#{data.uri}\##{i}"
+          part_data.mime_type = part.mime_type
+          data.attributes.each do |name, value|
+            part_data[name] = value
+          end
+          part_data[:encoding] = body.encoding.to_s
+          part_data[:subject] = mail.subject
+          part_data[:author] = mail[:from].formatted | mail[:from].addresses
+          yield(part_data)
+        end
+      end
+    end
+  end
+end