DotClear importer (#414)

* Add dotclear importer

docs/_importers/dotclear.md

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+---
+layout: docs
+title: Dotclear
+prev_section: csv
+link_source: dotclear
+next_section: drupal6
+permalink: /docs/dotclear/
+---
+
+To import your posts from a dotclear file, run:
+
+{% highlight bash %}
+$ ruby -r rubygems -e 'require "jekyll-import";
+    JekyllImport::Importers::Dotclear.run({
+      "datafile" => "2019-....-backup.txt",
+      "mediafolder" => "path/to/the/media (media.zip inflated)"
+    })'
+{% endhighlight %}

lib/jekyll-import/importers/dotclear.rb

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+# frozen_string_literal: true
+
+# Tested with dotClear 2.1.5
+module JekyllImport
+  module Importers
+    class Dotclear < Importer
+      def self.specify_options(c)
+        c.option "datafile", "--datafile PATH", "dotClear export file"
+        c.option "mediafolder", "--mediafolder PATH", "dotClear media export folder (media.zip inflated)"
+      end
+
+      def self.require_deps
+        JekyllImport.require_with_fallback(%w(
+          rubygems
+          fileutils
+          safe_yaml
+          date
+          active_support
+          active_support/core_ext/string/inflections
+          csv
+          pp
+        ))
+      end
+
+      def self.validate(opts)
+        abort "Specify a data file !" if opts["datafile"].nil? || opts["datafile"].empty?
+        abort "Specify a media folder !" if opts["mediafolder"].nil? || opts["mediafolder"].empty?
+      end
+
+      def self.extract_headers_section(str)
+        str[1..-2].split(" ")[1].split(",")
+      end
+
+      def self.extract_data_section(str)
+        str.gsub(%r!^"!, "").gsub(%r!"$!, "").split('","')
+      end
+
+      def self.process(opts)
+        options = {
+          :datafile    => opts.fetch("datafile", ""),
+          :mediafolder => opts.fetch("mediafolder", ""),
+        }
+
+        FileUtils.mkdir_p("_posts")
+        FileUtils.mkdir_p("_drafts")
+
+        type_data = ""
+        headers = {}
+        posts_and_drafts = {}
+        keywords = {}
+
+        File.readlines(options[:datafile]).each do |lineraw|
+          line = lineraw.strip.gsub(%r!\n$!, "")
+
+          next if line.empty?
+
+          if line.start_with?("[") # post | media \ meta | comment...
+            type_data = line.split(" ").first[1..-1]
+            headers[type_data] = extract_headers_section(line)
+            next
+          end
+
+          elts = extract_data_section(line)
+
+          if type_data == "post"
+            draft = (elts[headers[type_data].index("post_status")] != "1")
+
+            date_str = elts[headers[type_data].index("post_creadt")]
+            date_blank = (date_str.nil? || date_str.empty?)
+            date_str_formatted = date_blank ? Date.today : Date.parse(date_str).strftime("%Y-%m-%d")
+            title_param = elts[headers[type_data].index("post_title")].to_s.parameterize
+
+            content = elts[headers[type_data].index("post_content_xhtml")].to_s
+            content = content.gsub('\"', '"').gsub('\n', "\n").gsub("/public/", "/assets/images/")
+
+            filepath = File.join(Dir.pwd, (draft ? "_drafts" : "_posts"), "#{date_str_formatted}-#{title_param}.html")
+
+            entire_content_file = <<~POST_FILE
+              ---
+              layout: post
+              title: "#{elts[headers[type_data].index("post_title")]}"
+              date: #{elts[headers[type_data].index("post_creadt")]} +0100
+              tags: ABC
+              ---
+
+              #{content}
+            POST_FILE
+
+            posts_and_drafts[elts[headers[type_data].index("post_id")]] = { :path => filepath, :content => entire_content_file }
+          elsif type_data == "media"
+            elts[headers[type_data].index("media_title")]
+            mediafilepath = elts[headers[type_data].index("media_file")]
+
+            src_path = File.join(options[:mediafolder], mediafilepath)
+            dst_path = File.join(Dir.pwd, "assets", "images", mediafilepath.to_s)
+
+            FileUtils.mkdir_p(File.dirname(dst_path))
+            FileUtils.cp(src_path, dst_path)
+          elsif type_data == "meta"
+            keywords[elts[headers[type_data].index("post_id")]] ||= []
+            keywords[elts[headers[type_data].index("post_id")]] << elts[headers[type_data].index("meta_id")]
+          elsif type_data == "link"
+
+          elsif type_data == "setting"
+
+          elsif type_data == "comment"
+
+          end
+        end
+
+        # POST-process : Change media path in posts and drafts
+        posts_and_drafts.each do |post_id, hsh|
+          keywords_str = keywords[post_id].to_a.join(", ")
+          content_file = hsh[:content]
+          content_file = content_file.gsub("tags: ABC", "tags: [#{keywords_str}]")
+
+          File.open(hsh[:path], "wb") do |f|
+            f.write(content_file)
+          end
+        end
+      end
+    end
+  end
+end