1 files changed, 58 insertions, 0 deletions
diff --git a/app/lib/command_tag/command/text_tools.rb b/app/lib/command_tag/command/text_tools.rb
new file mode 100644
index 000000000..2c44167b4
--- /dev/null
+++ b/app/lib/command_tag/command/text_tools.rb
@@ -0,0 +1,58 @@
+# frozen_string_literal: true
+
+module CommandTag::Command::TextTools
+  def handle_code_at_start(args)
+    return if args.count < 2
+
+    name = normalize(args[0])
+    value = args.last.presence || ''
+    @vars[name] = case @status.content_type
+                  when 'text/markdown'
+                    ["```\n#{value}\n```"]
+                  when 'text/html'
+                    ["<pre><code>#{html_encode(value).gsub("\n", '<br/>')}</code></pre>"]
+                  else
+                    ["----------\n#{value}\n----------"]
+                  end
+  end
+
+  def handle_code_with_return(args)
+    return if args.count > 1
+
+    value = args.last.presence || ''
+    case @status.content_type
+    when 'text/markdown'
+      ["```\n#{value}\n```"]
+    when 'text/html'
+      ["<pre><code>#{html_encode(value).gsub("\n", '<br/>')}</code></pre>"]
+    else
+      ["----------\n#{value}\n----------"]
+    end
+  end
+
+  def handle_prepend_before_save(args)
+    args.each { |arg| @text = "#{arg}\n#{text}" }
+  end
+
+  def handle_append_before_save(args)
+    args.each { |arg| @text << "\n#{arg}" }
+  end
+
+  def handle_replace_before_save(args)
+    @text.gsub!(args[0], args[1] || '')
+  end
+
+  alias handle_sub_before_save handle_replace_before_save
+
+  def handle_regex_replace_before_save(args)
+    flags     = normalize(args[2])
+    re_opts   = (flags.include?('i') ? Regexp::IGNORECASE : 0)
+    re_opts  |= (flags.include?('x') ? Regexp::EXTENDED : 0)
+    re_opts  |= (flags.include?('m') ? Regexp::MULTILINE : 0)
+
+    @text.gsub!(Regexp.new(args[0], re_opts), args[1] || '')
+  end
+
+  alias handle_resub_before_save handle_replace_before_save
+  alias handle_regex_sub_before_save handle_replace_before_save
+end