Class: Uniword::DocumentFactory

Inherits:
Object
  • Object
show all
Defined in:
lib/uniword/document_factory.rb

Overview

Factory for creating Document instances.

Responsibility: Handle document creation from various sources. Follows Single Responsibility Principle - creation logic separated from Document class itself.

Examples:

Create document from file

document = Uniword::DocumentFactory.from_file("document.docx")

Create empty document

document = Uniword::DocumentFactory.create

Create with specific format

document = Uniword::DocumentFactory.from_file("doc.mhtml", format: :mhtml)

Class Method Summary collapse

Class Method Details

.copy_package_parts_to_document(package, document) ⇒ void

This method returns an undefined value.

Copy package parts to document for round-trip preservation

Parameters:



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# File 'lib/uniword/document_factory.rb', line 178

def copy_package_parts_to_document(package, document)
  return unless document.is_a?(Uniword::Wordprocessingml::DocumentRoot)

  document.styles_configuration = package.styles if package.styles
  document.numbering_configuration = package.numbering if package.numbering
  document.settings = package.settings if package.settings
  document.font_table = package.font_table if package.font_table
  document.web_settings = package.web_settings if package.web_settings
  document.theme = package.theme if package.theme
  document.core_properties = package.core_properties if package.core_properties
  document.app_properties = package.app_properties if package.app_properties
  document.document_rels = package.document_rels if package.document_rels
  document.theme_rels = package.theme_rels if package.theme_rels
  document.package_rels = package.package_rels if package.package_rels
  document.content_types = package.content_types if package.content_types
  document.custom_properties = package.custom_properties if package.custom_properties
  document.custom_xml_items = package.custom_xml_items if package.custom_xml_items
  document.footnotes = package.footnotes if package.footnotes
  document.endnotes = package.endnotes if package.endnotes
end

.create ⇒ Wordprocessingml::DocumentRoot

Create a new empty document.

Examples:

Create empty document

document = DocumentFactory.create

Returns:



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# File 'lib/uniword/document_factory.rb', line 29

def create
  Wordprocessingml::DocumentRoot.new
end

.detect_format(path) ⇒ Symbol

Detect the format of a file.

Uses FormatDetector for signature-based detection with extension fallback.

Examples:

Detect format

format = DocumentFactory.detect_format("document.docx")
# => :docx

Parameters:

  • path (String) —

    The file path

Returns:

  • (Symbol) —

    The detected format (:docx, :mhtml)

Raises:

  • (ArgumentError) —

    if format cannot be detected



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# File 'lib/uniword/document_factory.rb', line 167

def detect_format(path)
  detector = FormatDetector.new
  detector.detect(path)
end

.from_file(path, format: :auto) ⇒ Document

Create a document from a file.

Examples:

Load DOCX file

document = DocumentFactory.from_file("document.docx")

Load with explicit format

document = DocumentFactory.from_file("doc.mht", format: :mhtml)

Parameters:

  • path (String) —

    The file path

  • format (Symbol) (defaults to: :auto) —

    The format (:auto, :docx, :mhtml)

Returns:

  • (Document) —

    The loaded document

Raises:

  • (ArgumentError) —

    if path is invalid

  • (ArgumentError) —

    if format is not supported



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# File 'lib/uniword/document_factory.rb', line 46

def from_file(path, format: :auto)
  # Handle binary strings (for docx gem compatibility)
  # Convert to StringIO if it's a binary string (contains null bytes or has binary encoding)
  path = StringIO.new(path) if path.is_a?(String) && (path.encoding == Encoding::ASCII_8BIT || path.include?("\x00"))

  validate_path(path)

  format = detect_format(path) if format == :auto

  case format
  when :docx, :docm
    package = Docx::Package.from_file(path)
    doc = package.document
    copy_package_parts_to_document(package, doc)
    doc
  when :dotx, :dotm
    Ooxml::DotxPackage.from_file(path)
  when :mhtml
    mhtml_doc = Mhtml::MhtmlPackage.from_file(path)
    # Convert Mhtml::Document to DocumentRoot for uniform API
    if mhtml_doc.is_a?(Mhtml::Document)
      Transformation::Transformer.new.mhtml_to_docx(mhtml_doc)
    else
      mhtml_doc
    end
  when :html
    html_content = read_file_content(path)
    Uniword.from_html(html_content)
  else
    raise ArgumentError, "Unsupported format: #{format}"
  end
rescue ArgumentError
  # Re-raise validation errors as-is
  raise
rescue Zip::Error => e
  raise CorruptedFileError.new(path.to_s,
                               "Invalid ZIP structure: #{e.message}")
rescue Nokogiri::XML::SyntaxError => e
  raise CorruptedFileError.new(path.to_s, "Invalid XML: #{e.message}")
rescue StandardError => e
  # Re-raise our custom errors
  raise if e.is_a?(Uniword::Error)

  # Wrap other errors
  raise CorruptedFileError.new(path.to_s, e.message)
end

.from_file_data(stream, format: :auto) ⇒ Document

Create a document from binary data (IO/StringIO stream or binary string). Compatible with docx gem API

Examples:

Load from stream

stream = StringIO.new(File.binread("doc.docx"))
document = DocumentFactory.from_file_data(stream)

Load from binary string

data = File.binread("doc.docx")
document = DocumentFactory.from_file_data(data)

Parameters:

  • stream (IO, StringIO, String) —

    The binary stream or data

  • format (Symbol) (defaults to: :auto) —

    The format (:auto, :docx, :mhtml)

Returns:

  • (Document) —

    The loaded document (Generated::Wordprocessingml::DocumentRoot)



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# File 'lib/uniword/document_factory.rb', line 107

def from_file_data(stream, format: :auto)
  # Convert binary string to StringIO if needed
  stream = StringIO.new(stream) if stream.is_a?(String)

  # Use from_file which already supports IO/StringIO
  from_file(stream, format: format)
end

.from_theme_file(path, format: :auto) ⇒ Theme

Create a Theme from a theme file (.thmx).

IMPORTANT: This returns a Theme object, NOT a Document! Theme files (.thmx) are standalone packages containing only theme data.

Examples:

Load theme file

theme = DocumentFactory.from_theme_file("celestial.thmx")
theme.name # => "Celestial"

Parameters:

  • path (String) —

    The file path to .thmx file

  • format (Symbol) (defaults to: :auto) —

    The format (:auto, :thmx)

Returns:

  • (Theme) —

    The loaded theme

Raises:

  • (ArgumentError) —

    if path is invalid or not a theme format



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# File 'lib/uniword/document_factory.rb', line 128

def from_theme_file(path, format: :auto)
  validate_path(path)

  format = detect_format(path) if format == :auto

  case format
  when :thmx
    Ooxml::ThmxPackage.from_file(path)
  else
    raise ArgumentError,
          "Not a theme format: #{format}. Use from_file() for documents."
  end
rescue ArgumentError
  # Re-raise validation errors as-is
  raise
rescue Zip::Error => e
  raise CorruptedFileError.new(path.to_s,
                               "Invalid ZIP structure: #{e.message}")
rescue Nokogiri::XML::SyntaxError => e
  raise CorruptedFileError.new(path.to_s, "Invalid XML: #{e.message}")
rescue StandardError => e
  # Re-raise our custom errors
  raise if e.is_a?(Uniword::Error)

  # Wrap other errors
  raise CorruptedFileError.new(path.to_s, e.message)
end