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 21

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

  return nil unless 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)
    next unless key
    val = val[1..-2] if val&.start_with?('"') && val&.end_with?('"')
    params[key.upcase] = val || ''
  end

  [name, params, value]
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 54

def split_params(str)
  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
  parts << current unless current.empty?
  parts
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 14

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