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require 'eim_xml'
module EimXML
class Formatter
attr_reader :out
def self.write(element, opt = {})
opt = { out: '' }.merge(opt)
new(opt).write(element)
opt[:out]
end
def initialize(opt)
@out = opt[:out]
@preservers = opt[:preservers]
@preserve_space = false
@indent_string = ' '
@indent_depth = 0
@option = opt.dup.tap { |h| %i[out preservers].each { |k| h.delete(k) } }
end
def write(src)
case src
when ElementWrapper
write_wrapper(src)
when Comment
write_comment(src)
when Element
write_element(src)
when PCString
write_pcstring(src)
else
write_string(src.to_s)
end
end
def indent(&proc)
@indent_depth += 1
proc.call
ensure
@indent_depth -= 1
end
def preserve_space_element?(elm)
@preservers&.any? do |e|
case e
when Symbol
e == elm.name
when Class
elm.is_a?(e)
end
end
end
def write_indent
out << (@indent_string * @indent_depth) unless @preserve_space
end
def write_newline
out << "\n" unless @preserve_space
end
def write_comment(commend)
write_indent
commend.write_to(out)
write_newline
end
def write_contents_of(elm)
flag = @preserve_space
@preserve_space = true if preserve_space_element?(elm)
write_newline
indent do
elm.contents.each do |c|
write(c)
end
end
write_indent
ensure
@preserve_space = flag
end
def write_element(elm)
write_indent
out << '<'
elm.name_and_attributes(out)
case elm.contents.size
when 0
out << ' />'
else
out << '>'
write_contents_of(elm)
out << "</#{elm.name}>"
end
write_newline
end
def write_pcstring(pcs)
pcs.encoded_string.each_line do |l|
write_indent
out << l
end
write_newline
end
def write_string(str)
PCString.encode(str).each_line do |l|
write_indent
out << l
end
write_newline
end
def write_wrapper(wrapper)
wrapper.each(@option) do |i|
write(i)
end
end
end
end
require 'eim_xml/formatter/element_wrapper'
|
