class HexaPDF::Configuration

Parent

Manages both the global and document specific configuration options for HexaPDF.

Overview

HexaPDF allows detailed control over many aspects of PDF manipulation. If there is a need to use a certain default value somewhere, it is defined as configuration options so that it can easily be changed.

Some options are defined as global options because they are needed on the class level - see HexaPDF::GlobalConfiguration. Other options can be configured for individual documents as they allow to fine-tune some behavior - see HexaPDF::DefaultDocumentConfiguration.

A configuration option name is dot-separted to provide a hierarchy of option names. For example, io.chunk_size.

Attributes

options[R]

Returns the hash with the configuration options.

Public Class Methods

new(options = {})

Creates a new Configuration object using the provided hash argument.

with_defaults(values = {})

Creates a new document specific Configuration object by merging the values into the default configuration object.

Public Instance Methods

[](name)

Returns the value for the configuration option name.

[]=(name, value)

Uses value as the value for the configuration option name.

constantize(name, *keys) → constant
constantize(name, *keys) {|name| block} → obj

Returns the constant the option name is referring to. If keys are provided and the value of the option name responds to #dig, the constant to which the keys refer is returned.

If no constant can be found and no block is provided, an error is raised. If a block is provided it is called with the option name and its result will be returned.

config.constantize('encryption.aes')      #=> HexaPDF::Encryption::FastAES
config.constantize('filter.map', :Fl)     #=> HexaPDF::Filter::FlateDecode
key?(name)

Returns true if the given option exists.

Also aliased as: option?
merge(config)

Returns a new Configuration object containing the options from the given configuration object (or hash) and this configuration object.

If a key already has a value in this object, its value is overwritten by the one from config. However, hash values are merged instead of being overwritten. Array values are duplicated.

option?(name)
Alias for: key?