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// This file is part of rss.
//
// Copyright © 2015-2021 The rust-syndication Developers
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the MIT License and/or Apache 2.0 License.
use std::io::{BufRead, Write};
use quick_xml::events::{BytesStart, Event};
use quick_xml::Error as XmlError;
use quick_xml::Reader;
use quick_xml::Writer;
use crate::error::Error;
use crate::toxml::ToXml;
use crate::util::{attr_value, decode, skip};
/// Represents an enclosure in an RSS item.
#[cfg_attr(feature = "serde", derive(Serialize, Deserialize))]
#[derive(Debug, Default, Clone, PartialEq)]
#[cfg_attr(feature = "builders", derive(Builder))]
#[cfg_attr(
feature = "builders",
builder(
setter(into),
default,
build_fn(name = "build_impl", private, error = "never::Never")
)
)]
pub struct Enclosure {
/// The URL of the enclosure.
pub url: String,
/// The length of the enclosure in bytes.
pub length: String,
/// The MIME type of the enclosure.
pub mime_type: String,
}
impl Enclosure {
/// Return the URL of this enclosure.
///
/// # Examples
///
/// ```
/// use rss::Enclosure;
///
/// let mut enclosure = Enclosure::default();
/// enclosure.set_url("http://example.com/audio.mp3");
/// assert_eq!(enclosure.url(), "http://example.com/audio.mp3");
/// ```
pub fn url(&self) -> &str {
self.url.as_str()
}
/// Set the URL of this enclosure.
///
/// # Examples
///
/// ```
/// use rss::Enclosure;
///
/// let mut enclosure = Enclosure::default();
/// enclosure.set_url("http://example.com/audio.mp3");
/// ```
pub fn set_url<V>(&mut self, url: V)
where
V: Into<String>,
{
self.url = url.into();
}
/// Return the content length of this enclosure.
///
/// # Examples
///
/// ```
/// use rss::Enclosure;
///
/// let mut enclosure = Enclosure::default();
/// enclosure.set_length("1000");
/// assert_eq!(enclosure.length(), "1000");
/// ```
pub fn length(&self) -> &str {
self.length.as_str()
}
/// Set the content length of this enclosure.
///
/// # Examples
///
/// ```
/// use rss::Enclosure;
///
/// let mut enclosure = Enclosure::default();
/// enclosure.set_length("1000");
/// ```
pub fn set_length<V>(&mut self, length: V)
where
V: Into<String>,
{
self.length = length.into();
}
/// Return the MIME type of this enclosure.
///
/// # Examples
///
/// ```
/// use rss::Enclosure;
///
/// let mut enclosure = Enclosure::default();
/// enclosure.set_mime_type("audio/mpeg");
/// assert_eq!(enclosure.mime_type(), "audio/mpeg");
/// ```
pub fn mime_type(&self) -> &str {
self.mime_type.as_str()
}
/// Set the MIME type of this enclosure.
///
/// # Examples
///
/// ```
/// use rss::Enclosure;
///
/// let mut enclosure = Enclosure::default();
/// enclosure.set_mime_type("audio/mpeg");
/// ```
pub fn set_mime_type<V>(&mut self, mime_type: V)
where
V: Into<String>,
{
self.mime_type = mime_type.into();
}
}
impl Enclosure {
/// Builds an Enclosure from source XML
pub fn from_xml<'s, R: BufRead>(
reader: &mut Reader<R>,
element: &'s BytesStart<'s>,
) -> Result<Self, Error> {
let mut enclosure = Enclosure::default();
for attr in element.attributes().with_checks(false).flatten() {
match decode(attr.key.as_ref(), reader)?.as_ref() {
"url" => enclosure.url = attr_value(&attr, reader)?.to_string(),
"length" => enclosure.length = attr_value(&attr, reader)?.to_string(),
"type" => enclosure.mime_type = attr_value(&attr, reader)?.to_string(),
_ => {}
}
}
skip(element.name(), reader)?;
Ok(enclosure)
}
}
impl ToXml for Enclosure {
fn to_xml<W: Write>(&self, writer: &mut Writer<W>) -> Result<(), XmlError> {
let name = "enclosure";
let mut element = BytesStart::new(name);
element.push_attribute(("url", self.url.as_str()));
element.push_attribute(("length", self.length.as_str()));
element.push_attribute(("type", self.mime_type.as_str()));
writer.write_event(Event::Empty(element))?;
Ok(())
}
}
#[cfg(feature = "builders")]
impl EnclosureBuilder {
/// Builds a new `Enclosure`.
pub fn build(&self) -> Enclosure {
self.build_impl().unwrap()
}
}