class ActionView::PathResolver

def build_path(name, prefix, partial, details)
  path = ""
  path << "#{prefix}/" unless prefix.empty?
  path << (partial ? "_#{name}" : name)
  path
end

def escape_entry(entry)
  entry.gsub(/(\*|\[|\]|\{|\}|\?)/, "\\\\\\1")
end

def extract_handler_and_format(path, default_formats)
  pieces = File.basename(path).split(".")
  pieces.shift
  handler  = Template.handler_class_for_extension(pieces.pop)
  if pieces.last == "html" && pieces[-2] == "text"
    correct_path = path.gsub(/\.text\.html/, ".html")
    ActiveSupport::Deprecation.warn "The file `#{path}` uses the deprecated format `text.html`. Please rename it to #{correct_path}", caller
  end
  if pieces.last == "plain" && pieces[-2] == "text"
    correct_path = path.gsub(/\.text\.plain/, ".text")
    pieces.pop
    ActiveSupport::Deprecation.warn "The file `#{path}` uses the deprecated format `text.plain`. Please rename it to #{correct_path}", caller
  end
  format   = pieces.last && Mime[pieces.last] && pieces.pop.to_sym
  format ||= handler.default_format if handler.respond_to?(:default_format)
  format ||= default_formats
  [handler, format]
end

def find_templates(name, prefix, partial, details)
  path = build_path(name, prefix, partial, details)
  query(path, EXTENSION_ORDER.map { |ext| details[ext] }, details[:formats])
end

def query(path, exts, formats)
  query = escape_entry File.join(@path, path)
  exts.each do |ext|
    query << '{' << ext.map {|e| e && ".#{e}" }.join(',') << ',}'
  end
  query.gsub!(/\{\.html,/, "{.html,.text.html,")
  query.gsub!(/\{\.text,/, "{.text,.text.plain,")
  templates = []
  sanitizer = Hash.new { |h,k| h[k] = Dir["#{File.dirname(k)}/*"] }
  Dir[query].each do |p|
    next if File.directory?(p) || !sanitizer[p].include?(p)
    handler, format = extract_handler_and_format(p, formats)
    contents = File.open(p, "rb") {|io| io.read }
    templates << Template.new(contents, File.expand_path(p), handler,
      :virtual_path => path, :format => format)
  end
  templates
end

def to_s
  @path.to_s
end