// This file is part of html5ever_ext. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/html5ever_ext/master/COPYRIGHT. No part of predicator, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2017 The developers of html5ever_ext. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/html5ever_ext/master/COPYRIGHT.


/// Minifies and serializes a html5ever HTML DOM (RcDom) or node (Rc<Node>, aka Handle).
pub trait Minify
{
	/// Identical to impl Debug's fmt() method, except we can't impl Debug for a trait and struct we don't own in this crate.
	#[inline(always)]
	fn debug_fmt<W: fmt::Write>(&self, f: &mut W) -> fmt::Result;
	
	/// A debug string representing this node and any children.
	#[inline(always)]
	fn debug_string(&self) -> String
	{
		let mut debug = String::new();
		self.debug_fmt(&mut debug).unwrap();
		debug
	}
	
	/// Minifies and serializes an instance of an HTML DOM to file.
	/// If creating AMP pages, set `html_head_and_body_tags_are_optional` to false.
	/// Wraps use of `UltraMinifyingHtmlSerializer`.
	/// If you need to serialize multiple RcDom or Node objects to the same writer, consider using `UltraMinifyingHtmlSerializer` directly.
	#[inline(always)]
	fn minify_to_file_path<P: AsRef<Path>>(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool, html_file_path: P) -> Result<(), HtmlError>;
	
	/// Minifies and serializes an instance of an HTML DOM to String.
	/// If creating AMP pages, set `html_head_and_body_tags_are_optional` to false.
	/// For maximum efficiency at the cost of slight inaccuracy, set `collapse_whitespace` to true. (pre, code, samp and kbd are unaffected in any event).
	/// Wraps use of `UltraMinifyingHtmlSerializer`.
	/// If you need to serialize multiple RcDom or Node objects to the same writer, consider using `UltraMinifyingHtmlSerializer` directly.
	#[inline(always)]
	fn minify_to_string(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool) -> String
	{
		let bytes = self.minify_to_bytes(html_head_and_body_tags_are_optional, collapse_whitespace);
		String::from_utf8(bytes).unwrap()
	}
	
	/// Minifies and serializes an instance of an HTML DOM to a vector of bytes.
	/// If creating AMP pages, set `html_head_and_body_tags_are_optional` to false.
	/// For maximum efficiency at the cost of slight inaccuracy, set `collapse_whitespace` to true. (pre, code, samp and kbd are unaffected in any event).
	/// Wraps use of `UltraMinifyingHtmlSerializer`.
	/// If you need to serialize multiple RcDom or Node objects to the same writer, consider using `UltraMinifyingHtmlSerializer` directly.
	#[inline(always)]
	fn minify_to_bytes(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool) -> Vec<u8>;
	
	/// Minifies and serializes an instance of an HTML DOM to a writer.
	/// If creating AMP pages, set `html_head_and_body_tags_are_optional` to false.
	/// For maximum efficiency at the cost of slight inaccuracy, set `collapse_whitespace` to true. (pre, code, samp and kbd are unaffected in any event).
	/// Wraps use of `UltraMinifyingHtmlSerializer`.
	/// If you need to serialize multiple RcDom or Node objects to the same writer, consider using `UltraMinifyingHtmlSerializer` directly.
	#[inline(always)]
	fn minify_to_writer<W: Write>(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool, writer: W) -> io::Result<()>;
}

impl Minify for RcDom
{
	#[inline(always)]
	fn debug_fmt<W: fmt::Write>(&self, f: &mut W) -> fmt::Result
	{
		self.document.debug_fmt(f)
	}
	
	#[inline(always)]
	fn minify_to_file_path<P: AsRef<Path>>(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool, html_file_path: P) -> Result<(), HtmlError>
	{
		self.document.minify_to_file_path(html_head_and_body_tags_are_optional, collapse_whitespace, html_file_path)
	}
	
	#[inline(always)]
	fn minify_to_bytes(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool) -> Vec<u8>
	{
		self.document.minify_to_bytes(html_head_and_body_tags_are_optional, collapse_whitespace)
	}
	
	#[inline(always)]
	fn minify_to_writer<W: Write>(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool, writer: W) -> io::Result<()>
	{
		UltraMinifyingHtmlSerializer::new(html_head_and_body_tags_are_optional, false, false, writer).serialize_rc_dom(self, collapse_whitespace)
	}
}

impl Minify for Rc<Node>
{
	#[inline(always)]
	fn debug_fmt<W: fmt::Write>(&self, f: &mut W) -> fmt::Result
	{
		write!(f, "{}", self.minify_to_string(true, true))
	}
	
	#[inline(always)]
	fn minify_to_file_path<P: AsRef<Path>>(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool, html_file_path: P) -> Result<(), HtmlError>
	{
		use ::std::fs::File;
		
		let path = html_file_path.as_ref();
		
		let file = File::create(path).context(path)?;
		
		self.minify_to_writer(html_head_and_body_tags_are_optional, collapse_whitespace, file).context(path)?;
		
		Ok(())
	}
	
	#[inline(always)]
	fn minify_to_bytes(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool) -> Vec<u8>
	{
		let mut bytes = Vec::new();
		
		self.minify_to_writer(html_head_and_body_tags_are_optional, collapse_whitespace, &mut bytes).unwrap();
		
		bytes
	}
	
	#[inline(always)]
	fn minify_to_writer<W: Write>(&self, html_head_and_body_tags_are_optional: bool, collapse_whitespace: bool, writer: W) -> io::Result<()>
	{
		UltraMinifyingHtmlSerializer::new(html_head_and_body_tags_are_optional, false, false, writer).serialize_node(self, collapse_whitespace, true)
	}
}