3 files changed, 42 insertions(+), 4 deletions(-)

M shard.lock
M shard.yml
M src/main.cr

@@ 1,5 1,9 @@
 version: 2.0
 shards:
+  crustache:
+    git: https://github.com/MakeNowJust/crustache.git
+    version: 2.4.3
+
   map_parallel:
     git: https://git.sr.ht/~michalr/map_parallel
     version: 0.0.1+git.commit.a7c0be201c6695fa24b5e4f5fdffa3c707a54eb1

@@ 12,6 12,8 @@ dependencies:
     github: icyleaf/markd
   map_parallel:
     git: https://git.sr.ht/~michalr/map_parallel
+  crustache:
+    github: MakeNowJust/crustache
 
 license: GPLv3
 

@@ 2,17 2,49 @@ require "markd"
 require "./gmi_renderer"
 require "./extract_jekyll_front_matter"
 require "map_parallel"
+require "option_parser"
 
-Dir.new(".").entries
+posts_dir = "."
+
+OptionParser.parse do |parser|
+  parser.banner = "Usage: blog2gmi [arguments]"
+  parser.on("-p PATH", "--posts-dir=PATH", "Path to directory with Jekyll posts") { |dir| posts_dir = dir }
+  parser.on("-h", "--help", "Show this help") do
+    puts parser
+    exit
+  end
+  parser.invalid_option do |flag|
+    STDERR.puts "ERROR: #{flag} is not a valid option."
+    STDERR.puts parser
+    exit(1)
+  end
+end
+
+def g(matched, field)
+  a = matched.try &.[field]
+  return a.to_i if a.is_a?(String)
+  return 0
+end
+
+Dir.new(posts_dir).entries
   .select! { |x| /\.(md|markdown)$/ =~ x }
   .map_parallel do |fname|
-    entry = File.read(fname)
+    entry = File.read(Path.new(posts_dir, fname))
     extract = extract_jekyll_front_matter(entry)
     gmi_document, warnings = GmiRenderer.new.render(Markd::Parser.parse(extract[:doc]))
     warnings.each { |w| puts "#{fname}:#{w}" }
     {fname, extract[:front_matter], gmi_document}
   end
-  .each do |fname, front_matter, rendered|
-    puts "======= #{fname} : #{front_matter["title"]?} =======\n"
+  .map do |fname, front_matter, rendered|
+    matched_publication_date = /^(?<year>\d+)-(?<month>\d+)-(?<day>\d+)-.*/.match(fname)
+    article_date = Time.utc(
+      g(matched_publication_date, "year"),
+      g(matched_publication_date, "month"),
+      g(matched_publication_date, "day"))
+    {fname, front_matter, article_date, rendered}
+  end
+  .each do |fname, front_matter, article_date, rendered|
+    puts "======= #{fname} (#{article_date}) : #{front_matter["title"]?} =======\n"
+    puts "#{front_matter}\n"
     puts "#{rendered}\n"
   end