Pretty-prints an XML
document. This destroys whitespace in text nodes and will insert carriage returns and indentations.
TODO: Add an option to print attributes on new lines
Attributes
Read & Write
If compact is set to true, then the formatter will attempt to use as little space as possible
Read & Write
The width of a page. Used for formatting text
Class Methods
lib/rexml/formatters/pretty.rb
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# File tmp/rubies/ruby-2.3.8/lib/rexml/formatters/pretty.rb, line 30
def initialize( indentation=2, ie_hack=false )
@indentation = indentation
@level = 0
@ie_hack = ie_hack
@width = 80
@compact = false
end
Create a new pretty printer.
- output
-
An object implementing ‘<<(String)’, to which the output will be written.
- indentation
-
An integer greater than 0. The indentation of each level will be this number of spaces. If this is < 1, the behavior of this object is undefined. Defaults to 2.
- ie_hack
-
If true, the printer will insert whitespace before closing empty tags, thereby allowing Internet Explorer’s
XML
parser to function. Defaults to false.
Instance Methods
lib/rexml/formatters/pretty.rb
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# File tmp/rubies/ruby-2.3.8/lib/rexml/formatters/pretty.rb, line 124
def indent_text(string, level=1, style="\t", indentfirstline=true)
return string if level < 0
string.gsub(/\n/, "\n#{style*level}")
end
No documentation available
lib/rexml/formatters/pretty.rb
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# File tmp/rubies/ruby-2.3.8/lib/rexml/formatters/pretty.rb, line 129
def wrap(string, width)
parts = []
while string.length > width and place = string.rindex(' ', width)
parts << string[0...place]
string = string[place+1..-1]
end
parts << string
parts.join("\n")
end
No documentation available
lib/rexml/formatters/pretty.rb
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# File tmp/rubies/ruby-2.3.8/lib/rexml/formatters/pretty.rb, line 102
def write_cdata( node, output)
output << ' ' * @level
super
end
No documentation available
lib/rexml/formatters/pretty.rb
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# File tmp/rubies/ruby-2.3.8/lib/rexml/formatters/pretty.rb, line 97
def write_comment( node, output)
output << ' ' * @level
super
end
No documentation available
lib/rexml/formatters/pretty.rb
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# File tmp/rubies/ruby-2.3.8/lib/rexml/formatters/pretty.rb, line 107
def write_document( node, output )
# Ok, this is a bit odd. All XML documents have an XML declaration,
# but it may not write itself if the user didn't specifically add it,
# either through the API or in the input document. If it doesn't write
# itself, then we don't need a carriage return... which makes this
# logic more complex.
node.children.each { |child|
next if child == node.children[-1] and child.instance_of?(Text)
unless child == node.children[0] or child.instance_of?(Text) or
(child == node.children[1] and !node.children[0].writethis)
output << "\n"
end
write( child, output )
}
end
No documentation available
lib/rexml/formatters/pretty.rb
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# File tmp/rubies/ruby-2.3.8/lib/rexml/formatters/pretty.rb, line 39
def write_element(node, output)
output << ' '*@level
output << "<#{node.expanded_name}"
node.attributes.each_attribute do |attr|
output << " "
attr.write( output )
end unless node.attributes.empty?
if node.children.empty?
if @ie_hack
output << " "
end
output << "/"
else
output << ">"
# If compact and all children are text, and if the formatted output
# is less than the specified width, then try to print everything on
# one line
skip = false
if compact
if node.children.inject(true) {|s,c| s & c.kind_of?(Text)}
string = ""
old_level = @level
@level = 0
node.children.each { |child| write( child, string ) }
@level = old_level
if string.length < @width
output << string
skip = true
end
end
end
unless skip
output << "\n"
@level += @indentation
node.children.each { |child|
next if child.kind_of?(Text) and child.to_s.strip.length == 0
write( child, output )
output << "\n"
}
@level -= @indentation
output << ' '*@level
end
output << "</#{node.expanded_name}"
end
output << ">"
end
No documentation available
lib/rexml/formatters/pretty.rb
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# File tmp/rubies/ruby-2.3.8/lib/rexml/formatters/pretty.rb, line 88
def write_text( node, output )
s = node.to_s()
s.gsub!(/\s/,' ')
s.squeeze!(" ")
s = wrap(s, @width - @level)
s = indent_text(s, @level, " ", true)
output << (' '*@level + s)
end
No documentation available