Module: Protocol::Caldav::ContentLine

Defined in:
lib/protocol/caldav/content_line.rb

Class Method Summary collapse

Class Method Details

.parse_line(line) ⇒ Object

Parse a single content line into [name, params, value]. Format: NAME;PARAM1=VAL1;PARAM2="VAL2":value The value is everything after the first unquoted colon.



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# File 'lib/protocol/caldav/content_line.rb', line 18

def parse_line(line)
  # Find the first colon not inside a quoted parameter value
  in_quotes = false
  colon_idx = nil
  line.each_char.with_index do |ch, i|
    if ch == '"'
      in_quotes = !in_quotes
    elsif ch == ':' && !in_quotes
      colon_idx = i
      break
    end
  end

  if colon_idx
    left = line[0...colon_idx]
    value = line[(colon_idx + 1)..]
    parts = split_params(left)
    name = parts.shift
    params = {}
    parts.each do |param_str|
      key, val = param_str.split('=', 2)
      unless key
        next
      end
      if val&.start_with?('"') && val&.end_with?('"')
        val = val[1..-2]
      end
      params[key.upcase] = val || ''
    end
    [name, params, value]
  else
    nil
  end
end

.split_params(str) ⇒ Object

Split the left side of a content line by semicolons, respecting quoted values.



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# File 'lib/protocol/caldav/content_line.rb', line 55

def split_params(str)
  [].tap do |parts|
    current = +''
    in_quotes = false

    str.each_char do |ch|
      if ch == '"'
        in_quotes = !in_quotes
        current << ch
      elsif ch == ';' && !in_quotes
        parts << current
        current = +''
      else
        current << ch
      end
    end

    unless current.empty?
      parts << current
    end
  end
end

.unfold(text) ⇒ Object

Unfold lines per RFC 5545 §3.1: CRLF followed by a single space or tab is removed (the space/tab is part of the folding, not the value). Also normalizes line endings to LF.



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# File 'lib/protocol/caldav/content_line.rb', line 11

def unfold(text)
  text.gsub("\r\n", "\n").gsub("\r", "\n").gsub(/\n[ \t]/, '')
end