Class: Pubid::Csa::Identifier

Inherits:

Object

• Object
• Pubid::Csa::Identifier

Defined in:

lib/pubid/csa/identifier.rb

Class Method Summary

• .parse(input) ⇒ Object
• .parse_external_standard(input) ⇒ Object
• .set_publisher_prefix(obj, prefix) ⇒ Object

Class Method Details

.parse(input) ⇒ Object

# File 'lib/pubid/csa/identifier.rb', line 6

def self.parse(input)
  # Filter out comments
  return nil if input.start_with?("#")

  # Filter out non-standards
  return nil if input.match?(/^CSA (Communities|Group|Learning|OnDemand|Update)/)

  # Preprocessing: normalize CEI to IEC (French name)
  input = input.gsub("CEI/IEC", "IEC").gsub(/\bCEI\b/, "IEC")

  # Detect CAN/ wrapper (Canadian adoption)
  if input.start_with?("CAN/")
    # Check if this is actually a bundled/combined identifier with + or /
    # that should NOT be wrapped in CanadianAdopted
    wrapped_input = input.sub(/^CAN\//, "")

    # Check for bundled (+) or combined (/ or ,) patterns that should remain as-is
    # These should be parsed normally, with publisher prefix applied to each part
    # Patterns to detect:
    # 1. Bundled: + separator (e.g., "CSA B127.1:99 + B127.2:99")
    # 2. Combined with space: / separator with space before CSA- (e.g., "CSA A23.1:24/CSA A23.2:24")
    # 3. Combined with CAN/CSA-: / separator with CSA- appearing multiple times (e.g., "CSA-B138.1-17/CSA-B138.2-17")
    if wrapped_input.include?("+") ||
        (wrapped_input.include?("/") && wrapped_input.match?(/\s+CSA-/)) ||
        (wrapped_input.include?("/") && wrapped_input.scan("CSA-").length > 1)
      # This is a bundled or combined identifier - parse normally and add prefix
      # Normalize CSA- to CSA (with space) for parsing
      normalized = wrapped_input.sub(/^CSA-/, "CSA ")
      normalized = normalized.gsub("CAN/CSA-", "CSA ").gsub("CAN3-",
                                                            "CSA ")
      normalized = normalized.gsub(/\s+/, " ").strip

      # Parse normally (will create Bundled or Combined identifier)
      tree = Parser.new.parse(normalized)
      result = Builder.new.build(tree)

      # Apply CAN/CSA- prefix to the appropriate parts
      if result
        set_publisher_prefix(result, "CAN/CSA-")

        # Handle reaffirmation if present
        if (wrapped_input =~ /\(R(\d{4})\)/) && result.class.attributes.key?(:reaffirmation)
          result.reaffirmation = $1
        end
      end

      return result
    end

    # This is a standard single identifier wrapped in CanadianAdopted
    # Remove CAN/ prefix (already done above)

    # Extract reaffirmation FIRST (before any other processing)
    reaffirm_year = nil
    reaffirmation_was_4digit = false # Track original format
    if wrapped_input =~ /\(R(\d{2,4})\)/
      reaffirm_year = $1
      reaffirmation_was_4digit = ($1.length == 4) # Track if original was 4-digit
      # Convert 2-digit year to 4-digit if needed
      if reaffirm_year.length == 2
        year_int = reaffirm_year.to_i
        reaffirm_year = year_int < 50 ? "20#{reaffirm_year}" : "19#{reaffirm_year}"
      end
      wrapped_input = wrapped_input.sub(/\s*\(R\d{2,4}\)/, "")
    end

    # Detect and preserve original format (CSA- vs CSA)
    # Also track that this is a CAN/CSA- identifier (not just CSA-)
    original_prefix = if wrapped_input.start_with?("CSA-")
                        "CSA-"
                      elsif wrapped_input.start_with?("CSA ")
                        "CSA"
                      end
    is_can_csa = true # Track that this has the CAN/ wrapper

    # Normalize CSA- to CSA  (with space) for parsing
    wrapped_input = wrapped_input.sub(/^CSA-/, "CSA ")

    # Parse the wrapped identifier recursively
    wrapped_identifier = parse(wrapped_input)
    return nil unless wrapped_identifier

    # NOTE: Series identifiers should be wrapped in CanadianAdopted when
    # they have CAN/CSA- prefix. The Series will handle rendering correctly.
    # Do NOT return Series directly - always wrap in CanadianAdopted.

    # Set publisher prefix on wrapped identifier
    # For Series identifiers with CAN/ wrapper, use full "CAN/CSA-" prefix
    # For other identifiers, use the detected original_prefix ("CSA-" or "CSA")
    if wrapped_identifier.class.attributes.key?(:publisher_prefix)
      if is_can_csa && wrapped_identifier.is_a?(Identifiers::Series)
        # Series gets full "CAN/CSA-" prefix for proper rendering
        wrapped_identifier.publisher_prefix = "CAN/CSA-"
      elsif original_prefix
        # For Combined identifiers, set on first identifier
        if wrapped_identifier.is_a?(Identifiers::Combined) && wrapped_identifier.first
          wrapped_identifier.first.publisher_prefix = original_prefix if wrapped_identifier.first.class.attributes.key?(:publisher_prefix)
        else
          # For non-Combined identifiers, set directly
          wrapped_identifier.publisher_prefix = original_prefix
        end
      end
    end

    # Set reaffirmation on wrapped_identifier if it has the attribute
    if wrapped_identifier.class.attributes.key?(:reaffirmation) && reaffirm_year
      wrapped_identifier.reaffirmation = reaffirm_year
      if wrapped_identifier.class.attributes.key?(:original_reaffirmation_4digit)
        wrapped_identifier.original_reaffirmation_4digit = reaffirmation_was_4digit
      end
    end

    # Create CanadianAdoptedIdentifier wrapper
    result = Identifiers::CanadianAdopted.new
    result.wrapped_identifier = wrapped_identifier
    result.reaffirmation = reaffirm_year if reaffirm_year

    return result
  end

  # Detect CAN3- wrapper (historical Canadian adoption)
  if input.start_with?("CAN3-")
    # This is a historical Canadian adoption - parse as wrapper
    # Remove CAN3- prefix
    wrapped_input = input.sub(/^CAN3-/, "CSA ")

    # Detect year format before normalization (CAN3- standards use dash format)
    # Format: CAN3-Z299.0-86 (uses dash, not colon)
    has_dash_year = wrapped_input.match?(/-\d{2}\b/) # Match -86, -05, etc. (2-digit years)

    # Extract reaffirmation FIRST (before any other processing)
    reaffirm_year = nil
    reaffirmation_was_4digit = false # Track original format
    if wrapped_input =~ /\(R(\d{2,4})\)/
      reaffirm_year = $1
      reaffirmation_was_4digit = ($1.length == 4) # Track if original was 4-digit
      # Convert 2-digit year to 4-digit if needed
      if reaffirm_year.length == 2
        year_int = reaffirm_year.to_i
        reaffirm_year = year_int < 50 ? "20#{reaffirm_year}" : "19#{reaffirm_year}"
      end
      wrapped_input = wrapped_input.sub(/\s*\(R\d{2,4}\)/, "")
    end

    # Parse the wrapped identifier recursively
    wrapped_identifier = parse(wrapped_input)
    return nil unless wrapped_identifier

    # Set year_format for dash format identifiers (preserve original 2-digit year)
    if has_dash_year && wrapped_identifier.class.attributes.key?(:year_format)
      wrapped_identifier.year_format = "dash"
      # Mark original year as 2-digit so renderer converts back (1986 → 86)
      if wrapped_identifier.class.attributes.key?(:original_year_4digit)
        wrapped_identifier.original_year_4digit = false
      end
    end

    # Check if this is a Series identifier - return it directly with CAN3- prefix
    # Series identifiers are complete identifier types and handle the prefix themselves
    # They don't need to be wrapped in CanadianAdopted
    if wrapped_identifier.is_a?(Identifiers::Series)
      wrapped_identifier.publisher_prefix = "CAN3-"
      wrapped_identifier.reaffirmation = reaffirm_year if reaffirm_year
      wrapped_identifier.original_reaffirmation_4digit = reaffirmation_was_4digit
      return wrapped_identifier
    end

    # Set CAN3- as publisher prefix on wrapped identifier
    if wrapped_identifier.class.attributes.key?(:publisher_prefix)
      wrapped_identifier.publisher_prefix = "CAN3-"
    end

    # Set reaffirmation on wrapped_identifier if it has the attribute
    if wrapped_identifier.class.attributes.key?(:reaffirmation) && reaffirm_year
      wrapped_identifier.reaffirmation = reaffirm_year
      if wrapped_identifier.class.attributes.key?(:original_reaffirmation_4digit)
        wrapped_identifier.original_reaffirmation_4digit = reaffirmation_was_4digit
      end
    end

    # Create CanadianAdoptedIdentifier wrapper
    result = Identifiers::CanadianAdopted.new
    result.wrapped_identifier = wrapped_identifier
    result.reaffirmation = reaffirm_year if reaffirm_year

    return result
  end

  # Detect CSA adoption of international standards
  # Examples: CSA ISO/IEC TR 12785-3:15, CSA CISPR 16-1-1:18, CSA IEC 60601-1:08
  #          CSA CEI/IEC 61000-4-28-01 (bilingual)
  if input.match?(/^CSA (ISO\/IEC|CEI\/IEC|CISPR|IEC|CEI|ISO)\s/)
    # This is CSA adoption of international standard
    # Extract the wrapped standard portion
    wrapped_input = input.sub(/^CSA\s+/, "")

    # Extract reaffirmation FIRST (before parsing)
    reaffirm_year = nil
    if wrapped_input =~ /\(R(\d{2,4})\)/
      reaffirm_year = $1
      # Convert 2-digit year to 4-digit if needed
      if reaffirm_year.length == 2
        year_int = reaffirm_year.to_i
        reaffirm_year = year_int < 50 ? "20#{reaffirm_year}" : "19#{reaffirm_year}"
      end
      wrapped_input = wrapped_input.sub(/\s*\(R\d{2,4}\)/, "")
    end

    # Convert 2-digit years to 4-digit for external parser
    # :15 → :2015, :04 → :2004
    if wrapped_input =~ /:(\d{2})\b/
      short_year_str = $1 # Keep as string "04", "15", etc.
      short_year_int = short_year_str.to_i
      # Determine century: 00-49 → 2000s, 50-99 → 1900s
      full_year = short_year_int < 50 ? "20#{short_year_str}" : "19#{short_year_str}"
      wrapped_input = wrapped_input.sub(/:#{short_year_str}\b/,
                                        ":#{full_year}")
    end

    # Convert CSA amendment format to ISO/IEC format
    # /A1:22 → /Amd 1:2022, /A1-22 → /Amd 1-2022
    # Also handle 2-digit and 4-digit amendment years (convert to 4-digit)
    # Note: In gsub blocks with string regex, we must use $1, $2, $3
    # because the block receives a String, not MatchData
    wrapped_input = wrapped_input.gsub(%r{/A(\d+)([:/-])(\d{2,4})\b}) do
      amendment_num = $1
      separator = $2
      amend_year_str = $3
      amend_year_int = amend_year_str.to_i
      # Convert 2-digit year to 4-digit if needed
      if amend_year_str.length == 2
        amend_full_year = amend_year_int < 50 ? "20#{amend_year_str}" : "19#{amend_year_str}"
      else
        amend_full_year = amend_year_str
      end
      "/Amd #{amendment_num}#{separator}#{amend_full_year}"
    end

    # Parse with appropriate flavor parser
    wrapped_identifier = parse_external_standard(wrapped_input)
    return nil unless wrapped_identifier

    # Create CsaAdoptedIdentifier wrapper
    result = Identifiers::CsaAdopted.new
    result.wrapped_identifier = wrapped_identifier
    result.reaffirmation = reaffirm_year if reaffirm_year

    return result
  end

  # Detect package identifiers
  # Examples: CSA Z662:23 PACKAGE INCLUDES: +1 (PDF & ESA)
  #           CSA B149.1:25 Code, Handbook & Training Package (materials BEFORE keyword)
  #           CSA B149.1:20 PACKAGE (PDF + PRINT) (no materials)
  #           CSA B108:23 PACKAGE (no trailing space)
  if input.match?(/\sPACKAGE\b/i)
    # Handle two formats:
    # 1. {base} PACKAGE {materials} - materials after keyword
    # 2. {base} {materials} PACKAGE - materials before keyword

    # Check if materials come after PACKAGE keyword
    # Match: "CSA Z662:23 PACKAGE INCLUDES: +1" or "CSA B149.1:20 PACKAGE (PDF + PRINT)"
    case input
    when /\sPACKAGE\s+[A-Z]/i
      # Format: {base} PACKAGE {materials}
      # Extract materials after PACKAGE keyword
      base_input, package_materials = input.split(/\s+PACKAGE\s+/i, 2)
      base_input = base_input.strip
      package_materials = package_materials ? package_materials.strip : ""
      materials_after = true
    when /:(\d{2,4})(\s+[^P]+)\s+PACKAGE/i
      # Format: {base} PACKAGE or {base} {materials} PACKAGE
      # Examples: "C22.1-15 PACKAGE" (no materials), "CSA B149.1:25 Code, Handbook & Training Package"

      # Check if there's a year followed by materials before PACKAGE
      # Must check this BEFORE the generic "{base} PACKAGE" pattern
      $1
      $2

      # Check if this is a combined identifier (has comma with CSA after it)
      # Pattern: ", CSA" or ", CAN" which indicates combined identifier
      if input.match?(/,\s+CSA/)
        # For combined identifiers, we need to extract everything before "& Training Package"
        # The base is the combined identifier, materials is just "& Training Package"
        combined_match = input.match(/^(.+?)(\s+&[^P]+)\s+PACKAGE$/i)
        if combined_match
          base_input = combined_match[1].strip
          package_materials = "#{combined_match[2].strip} Package" # Keep "& Training Package"
        else
          # Fallback to year-based extraction
          year_match = input.match(/:\d{2,4}/)
          if year_match
            base_input = input[0..(year_match.end(0) - 1)]
            materials_input = input[year_match.end(0)..].strip
            package_materials = materials_input
          end
        end
      else
        # Standard single identifier with materials before PACKAGE
        year_match = input.match(/:\d{2,4}/)
        if year_match
          base_input = input[0..(year_match.end(0) - 1)]
          # Materials is everything between base and PACKAGE - keep the "Package" suffix for correct capitalization
          materials_input = input[year_match.end(0)..].strip
          package_materials = materials_input # Keep full materials including "Package" suffix
          base_input = base_input.strip
        end
      end
      materials_after = false
    # Format: {base} {materials} PACKAGE - "CSA B149.1:25 Code, Handbook & Training Package"
    # OR: Combined identifier with package: "CSA B149.1:25, CSA B149.2:25 & Training Package"
    when /^(.+?)\s+PACKAGE\s*$/i
      # Format: {base} PACKAGE (no materials) - "C22.1-15 PACKAGE"
      # Treat PACKAGE as the package description
      base_input = input.sub(/\s+PACKAGE\s*$/i, "").strip
      package_materials = "" # No additional materials
      materials_after = true
    else
      # Fallback: try parsing incrementally
      tokens = input.split(/\s+/)
      base_input = ""
      tokens.each do |token|
        break if token.match?(/^PACKAGE$/i)

        test_input = base_input.empty? ? token : "#{base_input} #{token}"
        parsed = parse(test_input)
        if parsed
          base_input = test_input
        else
          break
        end
      end

      # Extract materials as everything between base and PACKAGE
      if base_input && base_input.length < input.length
        materials_input = input[base_input.length..].strip
        package_materials = materials_input.sub(/\s+PACKAGE\s*$/i,
                                                "").strip
        materials_after = !package_materials.empty?
      end
    end

    # Parse base identifier recursively
    base_identifier = base_input ? parse(base_input) : nil
    return nil unless base_identifier

    # Create PackageIdentifier
    result = Identifiers::Package.new
    result.base_identifier = base_identifier
    # Set materials if present
    if package_materials && !package_materials.empty?
      result.package_materials = package_materials
    end
    result.package_keyword = "PACKAGE"
    # Set materials_after_keyword flag based on which format we detected
    result.materials_after_keyword = materials_after

    return result
  end

  # Legacy handling for CAN/CSA- and CAN3- (will be migrated to proper classes later)
  # Detect original publisher prefix before normalization
  publisher_prefix = if input.start_with?("CAN/CSA-")
                       "CAN/CSA-"
                     elsif input.start_with?("CAN3-")
                       "CAN3-"
                     elsif input.start_with?("CSA ")
                       "CSA"
                     end

  # Detect year format before normalization
  # CAN/CSA- standards use dash format: CAN/CSA-C22.2-05
  # Modern CSA standards use colon format: CSA B149:20
  has_dash_year = input.match?(/-\d{2}\b/)

  # Normalize CAN/CSA- and CAN3- to CSA (global replacement for combined identifiers)
  normalized = input.gsub("CAN/CSA-", "CSA ")
  # Normalize CAN3- to CSA (historical prefix)
  normalized = normalized.gsub("CAN3-", "CSA ")

  tree = Parser.new.parse(normalized)
  result = Builder.new.build(tree)

  # Set publisher prefix if detected
  if result && publisher_prefix
    set_publisher_prefix(result, publisher_prefix)
  end

  # Set year format if detected as dash and not already set
  if result && has_dash_year && result.year_format.nil?
    result.year_format = "dash"
  end

  result
rescue Parslet::ParseFailed => e
  raise e
end

.parse_external_standard(input) ⇒ Object

# File 'lib/pubid/csa/identifier.rb', line 429

def self.parse_external_standard(input)
  # Ensure full Pubid is loaded (handles Scheme and all flavors)
  require_relative "../../pubid" unless defined?(Pubid::Iso) && defined?(Pubid::Iec)

  # Try ISO/IEC first (most common)
  if input.match?(/^(ISO\/IEC|ISO|IEC|CEI|CEI\/IEC)\s/)
    begin
      # Normalize CEI/IEC to IEC for parsing (CEI is French for IEC)
      normalized_input = input.sub(/^CEI\/IEC/, "IEC")
      return Pubid::Iso.parse(normalized_input)
    rescue StandardError
      return nil
    end
  end

  # Try CISPR (uses IEC parser)
  if input.match?(/^CISPR\s/)
    begin
      return Pubid::Iec.parse(input)
    rescue StandardError
      return nil
    end
  end

  nil
end

.set_publisher_prefix(obj, prefix) ⇒ Object

# File 'lib/pubid/csa/identifier.rb', line 404

def self.set_publisher_prefix(obj, prefix)
  # Set on main object if it has the attribute
  if obj.class.attributes.key?(:publisher_prefix)
    obj.publisher_prefix = prefix
  end

  # Set on combined identifier parts
  if obj.is_a?(Identifiers::Combined)
    if obj.first&.class&.attributes&.key?(:publisher_prefix)
      obj.first.publisher_prefix = prefix
    end
    if obj.second && obj.second.class.attributes.key?(:has_publisher) && obj.second.has_publisher && obj.second.class.attributes.key?(:publisher_prefix)
      obj.second.publisher_prefix = prefix
    end
    if obj.third && obj.third.class.attributes.key?(:has_publisher) && obj.third.has_publisher && obj.third.class.attributes.key?(:publisher_prefix)
      obj.third.publisher_prefix = prefix
    end
  end

  # Set on bundled identifier base
  if obj.is_a?(Identifiers::Bundled) && obj.base
    set_publisher_prefix(obj.base, prefix)
  end
end