Class: Axlsx::Package

Inherits:
Object
  • Object
show all
Includes:
OptionsParser
Defined in:
lib/axlsx/package.rb

Overview

Package is responsible for managing all the bits and peices that Open Office XML requires to make a valid xlsx document including valdation and serialization.

Instance Attribute Summary collapse

Instance Method Summary collapse

Methods included from OptionsParser

#parse_options

Constructor Details

#initialize(options = {}) {|_self| ... } ⇒ Package

Initializes your package

Examples:

Package.new :author => 'you!', :workbook => Workbook.new

Parameters:

  • options (Hash) (defaults to: {}) —

    A hash that you can use to specify the author and workbook for this package.

Options Hash (options):

  • :author (String) —

    The author of the document

  • :created_at (Time) —

    Timestamp in the document properties (defaults to current time).

  • :use_shared_strings (Boolean) —

    This is passed to the workbook to specify that shared strings should be used when serializing the package.

Yields:

  • (_self)

Yield Parameters:



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# File 'lib/axlsx/package.rb', line 23

def initialize(options={})
  @workbook = nil
  @core, @app = Core.new, App.new
  @core.creator = options[:author] || @core.creator
  @core.created = options[:created_at]
  parse_options options
  yield self if block_given?
end

Instance Attribute Details

#app ⇒ Object (readonly)

provides access to the app doc properties for this package see App



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# File 'lib/axlsx/package.rb', line 10

def app
  @app
end

#core ⇒ Object (readonly)

provides access to the core doc properties for the package see Core



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# File 'lib/axlsx/package.rb', line 14

def core
  @core
end

Instance Method Details

#encrypt(file_name, password) ⇒ Object

Encrypt the package into a CFB using the password provided This is not ready yet



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# File 'lib/axlsx/package.rb', line 125

def encrypt(file_name, password)
  return false
  # moc = MsOffCrypto.new(file_name, password)
  # moc.save
end

#serialize(output, confirm_valid = false) ⇒ Boolean

Note:

A tremendous amount of effort has gone into ensuring that you cannot create invalid xlsx documents. confirm_valid should be used in the rare case that you cannot open the serialized file.

Serialize your workbook to disk as an xlsx document.

Examples:

# This is how easy it is to create a valid xlsx file. Of course you might want to add a sheet or two, and maybe some data, styles and charts.
# Take a look at the README for an example of how to do it!

#serialize to a file
p = Axlsx::Package.new
# ......add cool stuff to your workbook......
p.serialize("example.xlsx")

# Serialize to a stream
s = p.to_stream()
File.open('example_streamed.xlsx', 'w') { |f| f.write(s.read) }

Parameters:

  • output (String) —

    The name of the file you want to serialize your package to

  • confirm_valid (Boolean) (defaults to: false) —

    Validate the package prior to serialization.

Returns:

  • (Boolean) —

    False if confirm_valid and validation errors exist. True if the package was serialized

See Also:



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# File 'lib/axlsx/package.rb', line 101

def serialize(output, confirm_valid=false)
  return false unless !confirm_valid || self.validate.empty?
  Relationship.clear_cached_instances
  Zip::OutputStream.open(output) do |zip|
    write_parts(zip)
  end
  true
end

#to_stream(confirm_valid = false) ⇒ StringIO|Boolean

Serialize your workbook to a StringIO instance

Parameters:

  • confirm_valid (Boolean) (defaults to: false) —

    Validate the package prior to serialization.

Returns:

  • (StringIO|Boolean) —

    False if confirm_valid and validation errors exist. rewound string IO if not.



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# File 'lib/axlsx/package.rb', line 114

def to_stream(confirm_valid=false)
  return false unless !confirm_valid || self.validate.empty?
  Relationship.clear_cached_instances
  zip = write_parts(Zip::OutputStream.new(StringIO.new, true))
  stream = zip.close_buffer
  stream.rewind
  stream
end

#use_autowidth=(v) ⇒ Object

Shortcut to specify that the workbook should use autowidth

See Also:



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# File 'lib/axlsx/package.rb', line 34

def use_autowidth=(v)
  Axlsx::validate_boolean(v);
  workbook.use_autowidth = v
end

#use_shared_strings ⇒ Object

Shortcut to determine if the workbook is configured to use shared strings

See Also:



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# File 'lib/axlsx/package.rb', line 43

def use_shared_strings
  workbook.use_shared_strings
end

#use_shared_strings=(v) ⇒ Object

Shortcut to specify that the workbook should use shared strings

See Also:



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# File 'lib/axlsx/package.rb', line 49

def use_shared_strings=(v)
  Axlsx::validate_boolean(v);
  workbook.use_shared_strings = v
end

#validate ⇒ Array

Note:

This gem includes all schema from OfficeOpenXML-XMLSchema-Transitional.zip and OpenPackagingConventions-XMLSchema.zip as per ECMA-376, Third edition. opc schema require an internet connection to import remote schema from dublin core for dc, dcterms and xml namespaces. Those remote schema are included in this gem, and the original files have been altered to refer to the local versions.

If by chance you are able to creat a package that does not validate it indicates that the internal validation is not robust enough and needs to be improved. Please report your errors to the gem author.

Validate all parts of the package against xsd schema.

Examples:

# The following will output any error messages found in serialization.
p = Axlsx::Package.new
# ... code to create sheets, charts, styles etc.
p.validate.each { |error| puts error.message }

Returns:

  • (Array) —

    An array of all validation errors found.

See Also:



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# File 'lib/axlsx/package.rb', line 146

def validate
  errors = []
  parts.each do |part|
    unless part[:schema].nil?
      if part[:doc].is_a? String
        errors.concat validate_single_doc(part[:schema], part[:doc])
      else
        errors.concat validate_single_doc(part[:schema], part[:doc].to_xml_string)
      end
    end
  end
  errors
end

#workbook {|@workbook| ... } ⇒ Workbook

Note:

As there are multiple ways to instantiate a workbook for the package, here are a few examples: # assign directly during package instanciation wb = Package.new(:workbook => Workbook.new).workbook

# get a fresh workbook automatically from the package wb = Pacakge.new().workbook # # set the workbook after creating the package wb = Package.new().workbook = Workbook.new

The workbook this package will serialize or validate.

Yields:

Returns:

  • (Workbook) —

    If no workbook instance has been assigned with this package a new Workbook instance is returned.

Raises:

  • ArgumentError if workbook parameter is not a Workbook instance.



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# File 'lib/axlsx/package.rb', line 65

def workbook
  @workbook || @workbook = Workbook.new
  yield @workbook if block_given?
  @workbook
end

#workbook=(workbook) ⇒ Object

See Also:



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# File 'lib/axlsx/package.rb', line 79

def workbook=(workbook) DataTypeValidator.validate :Package_workbook, Workbook, workbook; @workbook = workbook; end