Class: Markbridge::Processors::DiscourseMarkdown::Detectors::Poll

Inherits:
Base
  • Object
show all
Defined in:
lib/markbridge/processors/discourse_markdown/detectors/poll.rb

Overview

Detects Discourse poll blocks [poll]….

Examples:

detector = Poll.new
input = "[poll type=\"regular\"]\n* A\n* B\n[/poll]"
match = detector.detect(input, 0)
match.node.type # => "regular"

Constant Summary collapse

OPEN_TAG_PATTERN = 
/\[poll([^\]]*)\]/i
CLOSE_TAG_PATTERN = 
%r{\[/poll\]}i

Instance Method Summary collapse

Instance Method Details

#detect(input, pos) ⇒ Match?

Attempt to detect a poll at the given position.

Parameters:

  • input (String) —

    the full input string

  • pos (Integer) —

    current position to check

Returns:

  • (Match, nil) —

    match result or nil if no match



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# File 'lib/markbridge/processors/discourse_markdown/detectors/poll.rb', line 23

def detect(input, pos)
  return nil unless input[pos] == "["

  # Check for opening tag
  remaining = input[pos..]
  open_match = OPEN_TAG_PATTERN.match(remaining)
  return nil unless open_match&.begin(0)&.zero?

  # Find closing tag
  close_match = CLOSE_TAG_PATTERN.match(remaining, open_match.end(0))
  return nil unless close_match

  # Extract raw content
  end_pos = pos + close_match.end(0)
  raw = input[pos...end_pos]

  # Parse attributes from opening tag
  attrs = parse_attributes(open_match[1])

  # Extract options from content between tags
  content = remaining[open_match.end(0)...close_match.begin(0)]
  options = extract_options(content)

  node =
    AST::Poll.new(
      name: attrs["name"] || "poll",
      type: attrs["type"],
      results: attrs["results"],
      public: attrs["public"] == "true",
      chart_type: attrs["charttype"] || attrs["chartType"],
      options:,
      raw:,
    )

  Match.new(start_pos: pos, end_pos:, node:)
end