add jsonfeed library

This commit is contained in:
Cadey Ratio 2020-07-14 12:07:40 -04:00
parent 4085fb2e4f
commit d8a16e0d51
12 changed files with 1519 additions and 0 deletions

75
Cargo.lock generated
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@ -21,6 +21,21 @@ dependencies = [
"pretty",
]
[[package]]
name = "addr2line"
version = "0.13.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1b6a2d3371669ab3ca9797670853d61402b03d0b4b9ebf33d677dfa720203072"
dependencies = [
"gimli",
]
[[package]]
name = "adler"
version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ee2a4ec343196209d6594e19543ae87a39f96d5534d7174822a3ad825dd6ed7e"
[[package]]
name = "adler32"
version = "1.1.0"
@ -86,6 +101,20 @@ version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"
[[package]]
name = "backtrace"
version = "0.3.50"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "46254cf2fdcdf1badb5934448c1bcbe046a56537b3987d96c51a7afc5d03f293"
dependencies = [
"addr2line",
"cfg-if",
"libc",
"miniz_oxide",
"object",
"rustc-demangle",
]
[[package]]
name = "base64"
version = "0.11.0"
@ -373,6 +402,15 @@ dependencies = [
"serde",
]
[[package]]
name = "error-chain"
version = "0.10.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d9435d864e017c3c6afeac1654189b06cdb491cf2ff73dbf0d73b0f292f42ff8"
dependencies = [
"backtrace",
]
[[package]]
name = "fake-simd"
version = "0.1.2"
@ -550,6 +588,12 @@ dependencies = [
"wasi",
]
[[package]]
name = "gimli"
version = "0.22.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "aaf91faf136cb47367fa430cd46e37a788775e7fa104f8b4bcb3861dc389b724"
[[package]]
name = "glob"
version = "0.3.0"
@ -756,6 +800,16 @@ dependencies = [
"wasm-bindgen",
]
[[package]]
name = "jsonfeed"
version = "0.2.0"
dependencies = [
"error-chain",
"serde",
"serde_derive",
"serde_json",
]
[[package]]
name = "kernel32-sys"
version = "0.2.2"
@ -905,6 +959,15 @@ dependencies = [
"unicase 2.6.0",
]
[[package]]
name = "miniz_oxide"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "be0f75932c1f6cfae3c04000e40114adf955636e19040f9c0a2c380702aa1c7f"
dependencies = [
"adler",
]
[[package]]
name = "mio"
version = "0.6.22"
@ -1023,6 +1086,12 @@ dependencies = [
"libc",
]
[[package]]
name = "object"
version = "0.20.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "1ab52be62400ca80aa00285d25253d7f7c437b7375c4de678f5405d3afe82ca5"
[[package]]
name = "once_cell"
version = "1.4.0"
@ -1557,6 +1626,12 @@ dependencies = [
"nom",
]
[[package]]
name = "rustc-demangle"
version = "0.1.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
[[package]]
name = "rustc_version"
version = "0.2.3"

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@ -31,3 +31,7 @@ warp = "0.2"
[build-dependencies]
ructe = { version = "0.11", features = ["warp02"] }
[workspace]
members = [
"./lib/jsonfeed"
]

4
lib/jsonfeed/.gitignore vendored Normal file
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@ -0,0 +1,4 @@
target/
**/*.rs.bk
Cargo.lock
*.html

15
lib/jsonfeed/Cargo.toml Normal file
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@ -0,0 +1,15 @@
[package]
authors = ["Paul Woolcock <paul@woolcock.us>"]
description = "Parser for the JSONFeed (http://jsonfeed.org) specification\n"
documentation = "https://docs.rs/jsonfeed"
homepage = "https://github.com/pwoolcoc/jsonfeed"
license = "MIT/Apache-2.0"
name = "jsonfeed"
readme = "README.adoc"
version = "0.2.0"
[dependencies]
error-chain = "0.10.0"
serde = "1"
serde_derive = "1"
serde_json = "1"

201
lib/jsonfeed/LICENSE-APACHE Normal file
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@ -0,0 +1,201 @@
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25
lib/jsonfeed/LICENSE-MIT Normal file
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@ -0,0 +1,25 @@
Copyright (c) 2014 The Rust Project Developers
Permission is hereby granted, free of charge, to any
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SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
DEALINGS IN THE SOFTWARE.

27
lib/jsonfeed/README.adoc Normal file
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@ -0,0 +1,27 @@
= JSON Feed Parser
[link=https://github.com/pwoolcoc/jsonfeed]
image::https://img.shields.io/crates/v/jsonfeed.svg[JSON Feed crate version]
This is a http://jsonfeed.org[JSON Feed] parser in Rust. Just a thin layer on top of `serde`, but it
provides serialization & deserialization, along with a Builder API for constructing feeds.
Note that this is alpha, I still need to add a lot of tests and a couple more features.
== Example
----
extern crate jsonfeed;
extern crate reqwest;
fn main() {
let resp = reqwest::get("https://example.com/feed.json").unwrap();
let feed = jsonfeed::from_reader(resp).unwrap();
println!("Feed title is: {}", feed.title);
}
----
TODO:
* Tests. Lots and lots of tests
* Implement ability to add, serialize, and deserialize custom attributes from the json feed spec

120
lib/jsonfeed/src/builder.rs Normal file
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@ -0,0 +1,120 @@
use std::default::Default;
use errors::*;
use feed::{Feed, Author, Attachment};
use item::{Content, Item};
/// Feed Builder
///
/// This is used to programmatically build up a Feed object,
/// which can be serialized later into a JSON string
pub struct Builder(Feed);
impl Builder {
pub fn new() -> Builder {
Builder(Feed::default())
}
pub fn title<I: Into<String>>(mut self, t: I) -> Builder {
self.0.title = t.into();
self
}
pub fn item(mut self, item: Item) -> Builder {
self.0.items.push(item);
self
}
pub fn build(self) -> Feed {
self.0
}
}
/// Builder object for an item in a feed
pub struct ItemBuilder {
pub id: Option<String>,
pub url: Option<String>,
pub external_url: Option<String>,
pub title: Option<String>,
pub content: Option<Content>,
pub summary: Option<String>,
pub image: Option<String>,
pub banner_image: Option<String>,
pub date_published: Option<String>,
pub date_modified: Option<String>,
pub author: Option<Author>,
pub tags: Option<Vec<String>>,
pub attachments: Option<Vec<Attachment>>,
}
impl ItemBuilder {
pub fn new() -> ItemBuilder {
ItemBuilder {
id: None,
url: None,
external_url: None,
title: None,
content: None,
summary: None,
image: None,
banner_image: None,
date_published: None,
date_modified: None,
author: None,
tags: None,
attachments: None,
}
}
pub fn title<I: Into<String>>(mut self, i: I) -> ItemBuilder {
self.title = Some(i.into());
self
}
pub fn content_html<I: Into<String>>(mut self, i: I) -> ItemBuilder {
match self.content {
Some(Content::Text(t)) => {
self.content = Some(Content::Both(i.into(), t));
},
_ => {
self.content = Some(Content::Html(i.into()));
}
}
self
}
pub fn content_text<I: Into<String>>(mut self, i: I) -> ItemBuilder {
match self.content {
Some(Content::Html(s)) => {
self.content = Some(Content::Both(s, i.into()));
},
_ => {
self.content = Some(Content::Text(i.into()));
},
}
self
}
pub fn build(self) -> Result<Item> {
if self.id.is_none() || self.content.is_none() {
return Err("missing field 'id' or 'content_*'".into());
}
Ok(Item {
id: self.id.unwrap(),
url: self.url,
external_url: self.external_url,
title: self.title,
content: self.content.unwrap(),
summary: self.summary,
image: self.image,
banner_image: self.banner_image,
date_published: self.date_published,
date_modified: self.date_modified,
author: self.author,
tags: self.tags,
attachments: self.attachments
})
}
}

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@ -0,0 +1,7 @@
use serde_json;
error_chain!{
foreign_links {
Serde(serde_json::Error);
}
}

296
lib/jsonfeed/src/feed.rs Normal file
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@ -0,0 +1,296 @@
use std::default::Default;
use item::Item;
use builder::Builder;
const VERSION_1: &'static str = "https://jsonfeed.org/version/1";
/// Represents a single feed
///
/// # Examples
///
/// ```rust
/// // Serialize a feed object to a JSON string
///
/// # extern crate jsonfeed;
/// # use std::default::Default;
/// # use jsonfeed::Feed;
/// # fn main() {
/// let feed: Feed = Feed::default();
/// assert_eq!(
/// jsonfeed::to_string(&feed).unwrap(),
/// "{\"version\":\"https://jsonfeed.org/version/1\",\"title\":\"\",\"items\":[]}"
/// );
/// # }
/// ```
///
/// ```rust
/// // Deserialize a feed objects from a JSON String
///
/// # extern crate jsonfeed;
/// # use jsonfeed::Feed;
/// # fn main() {
/// let json = "{\"version\":\"https://jsonfeed.org/version/1\",\"title\":\"\",\"items\":[]}";
/// let feed: Feed = jsonfeed::from_str(&json).unwrap();
/// assert_eq!(
/// feed,
/// Feed::default()
/// );
/// # }
/// ```
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize)]
pub struct Feed {
pub version: String,
pub title: String,
pub items: Vec<Item>,
#[serde(skip_serializing_if = "Option::is_none")]
pub home_page_url: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub feed_url: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub description: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub user_comment: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub next_url: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub icon: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub favicon: Option<String>,
#[serde(skip_serializing_if = "Option::is_none")]
pub author: Option<Author>,
#[serde(skip_serializing_if = "Option::is_none")]
pub expired: Option<bool>,
#[serde(skip_serializing_if = "Option::is_none")]
pub hubs: Option<Vec<Hub>>,
}
impl Feed {
/// Used to construct a Feed object
pub fn builder() -> Builder {
Builder::new()
}
}
impl Default for Feed {
fn default() -> Feed {
Feed {
version: VERSION_1.to_string(),
title: "".to_string(),
items: vec![],
home_page_url: None,
feed_url: None,
description: None,
user_comment: None,
next_url: None,
icon: None,
favicon: None,
author: None,
expired: None,
hubs: None,
}
}
}
/// Represents an `attachment` for an item
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize)]
pub struct Attachment {
url: String,
mime_type: String,
title: Option<String>,
size_in_bytes: Option<u64>,
duration_in_seconds: Option<u64>,
}
/// Represents an `author` in both a feed and a feed item
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize)]
pub struct Author {
name: Option<String>,
url: Option<String>,
avatar: Option<String>,
}
impl Author {
pub fn new() -> Author {
Author {
name: None,
url: None,
avatar: None,
}
}
pub fn name<I: Into<String>>(mut self, name: I) -> Self {
self.name = Some(name.into());
self
}
pub fn url<I: Into<String>>(mut self, url: I) -> Self {
self.url = Some(url.into());
self
}
pub fn avatar<I: Into<String>>(mut self, avatar: I) -> Self {
self.avatar = Some(avatar.into());
self
}
}
/// Represents a `hub` for a feed
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize)]
pub struct Hub {
#[serde(rename = "type")]
type_: String,
url: String,
}
#[cfg(test)]
mod tests {
use serde_json;
use std::default::Default;
use super::*;
#[test]
fn serialize_feed() {
let feed = Feed {
version: "https://jsonfeed.org/version/1".to_string(),
title: "some title".to_string(),
items: vec![],
home_page_url: None,
description: None,
expired: Some(true),
..Default::default()
};
assert_eq!(
serde_json::to_string(&feed).unwrap(),
r#"{"version":"https://jsonfeed.org/version/1","title":"some title","items":[],"expired":true}"#
);
}
#[test]
fn deserialize_feed() {
let json = r#"{"version":"https://jsonfeed.org/version/1","title":"some title","items":[]}"#;
let feed: Feed = serde_json::from_str(&json).unwrap();
let expected = Feed {
version: "https://jsonfeed.org/version/1".to_string(),
title: "some title".to_string(),
items: vec![],
..Default::default()
};
assert_eq!(
feed,
expected
);
}
#[test]
fn serialize_attachment() {
let attachment = Attachment {
url: "http://example.com".to_string(),
mime_type: "application/json".to_string(),
title: Some("some title".to_string()),
size_in_bytes: Some(1),
duration_in_seconds: Some(1),
};
assert_eq!(
serde_json::to_string(&attachment).unwrap(),
r#"{"url":"http://example.com","mime_type":"application/json","title":"some title","size_in_bytes":1,"duration_in_seconds":1}"#
);
}
#[test]
fn deserialize_attachment() {
let json = r#"{"url":"http://example.com","mime_type":"application/json","title":"some title","size_in_bytes":1,"duration_in_seconds":1}"#;
let attachment: Attachment = serde_json::from_str(&json).unwrap();
let expected = Attachment {
url: "http://example.com".to_string(),
mime_type: "application/json".to_string(),
title: Some("some title".to_string()),
size_in_bytes: Some(1),
duration_in_seconds: Some(1),
};
assert_eq!(
attachment,
expected
);
}
#[test]
fn serialize_author() {
let author = Author {
name: Some("bob jones".to_string()),
url: Some("http://example.com".to_string()),
avatar: Some("http://img.com/blah".to_string()),
};
assert_eq!(
serde_json::to_string(&author).unwrap(),
r#"{"name":"bob jones","url":"http://example.com","avatar":"http://img.com/blah"}"#
);
}
#[test]
fn deserialize_author() {
let json = r#"{"name":"bob jones","url":"http://example.com","avatar":"http://img.com/blah"}"#;
let author: Author = serde_json::from_str(&json).unwrap();
let expected = Author {
name: Some("bob jones".to_string()),
url: Some("http://example.com".to_string()),
avatar: Some("http://img.com/blah".to_string()),
};
assert_eq!(
author,
expected
);
}
#[test]
fn serialize_hub() {
let hub = Hub {
type_: "some-type".to_string(),
url: "http://example.com".to_string(),
};
assert_eq!(
serde_json::to_string(&hub).unwrap(),
r#"{"type":"some-type","url":"http://example.com"}"#
)
}
#[test]
fn deserialize_hub() {
let json = r#"{"type":"some-type","url":"http://example.com"}"#;
let hub: Hub = serde_json::from_str(&json).unwrap();
let expected = Hub {
type_: "some-type".to_string(),
url: "http://example.com".to_string(),
};
assert_eq!(
hub,
expected
);
}
#[test]
fn deser_podcast() {
let json = r#"{
"version": "https://jsonfeed.org/version/1",
"title": "Timetable",
"home_page_url": "http://timetable.manton.org/",
"items": [
{
"id": "http://timetable.manton.org/2017/04/episode-45-launch-week/",
"url": "http://timetable.manton.org/2017/04/episode-45-launch-week/",
"title": "Episode 45: Launch week",
"content_html": "Im rolling out early access to Micro.blog this week. I talk about how the first 2 days have gone, mistakes with TestFlight, and what to do next.",
"date_published": "2017-04-26T01:09:45+00:00",
"attachments": [
{
"url": "http://timetable.manton.org/podcast-download/139/episode-45-launch-week.mp3",
"mime_type": "audio/mpeg",
"size_in_bytes": 5236920
}
]
}
]
}"#;
serde_json::from_str::<Feed>(&json).expect("Failed to deserialize podcast feed");
}
}

493
lib/jsonfeed/src/item.rs Normal file
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@ -0,0 +1,493 @@
use std::fmt;
use std::default::Default;
use feed::{Author, Attachment};
use builder::ItemBuilder;
use serde::ser::{Serialize, Serializer, SerializeStruct};
use serde::de::{self, Deserialize, Deserializer, Visitor, MapAccess};
/// Represents the `content_html` and `content_text` attributes of an item
#[derive(Debug, Clone, PartialEq, Deserialize, Serialize)]
pub enum Content {
Html(String),
Text(String),
Both(String, String),
}
/// Represents an item in a feed
#[derive(Debug, Clone, PartialEq)]
pub struct Item {
pub id: String,
pub url: Option<String>,
pub external_url: Option<String>,
pub title: Option<String>,
pub content: Content,
pub summary: Option<String>,
pub image: Option<String>,
pub banner_image: Option<String>,
pub date_published: Option<String>, // todo DateTime objects?
pub date_modified: Option<String>,
pub author: Option<Author>,
pub tags: Option<Vec<String>>,
pub attachments: Option<Vec<Attachment>>,
}
impl Item {
pub fn builder() -> ItemBuilder {
ItemBuilder::new()
}
}
impl Default for Item {
fn default() -> Item {
Item {
id: "".to_string(),
url: None,
external_url: None,
title: None,
content: Content::Text("".into()),
summary: None,
image: None,
banner_image: None,
date_published: None,
date_modified: None,
author: None,
tags: None,
attachments: None,
}
}
}
impl Serialize for Item {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where S: Serializer
{
let mut state = serializer.serialize_struct("Item", 14)?;
state.serialize_field("id", &self.id)?;
if self.url.is_some() {
state.serialize_field("url", &self.url)?;
}
if self.external_url.is_some() {
state.serialize_field("external_url", &self.external_url)?;
}
if self.title.is_some() {
state.serialize_field("title", &self.title)?;
}
match self.content {
Content::Html(ref s) => {
state.serialize_field("content_html", s)?;
state.serialize_field("content_text", &None::<Option<&str>>)?;
},
Content::Text(ref s) => {
state.serialize_field("content_html", &None::<Option<&str>>)?;
state.serialize_field("content_text", s)?;
},
Content::Both(ref s, ref t) => {
state.serialize_field("content_html", s)?;
state.serialize_field("content_text", t)?;
},
};
if self.summary.is_some() {
state.serialize_field("summary", &self.summary)?;
}
if self.image.is_some() {
state.serialize_field("image", &self.image)?;
}
if self.banner_image.is_some() {
state.serialize_field("banner_image", &self.banner_image)?;
}
if self.date_published.is_some() {
state.serialize_field("date_published", &self.date_published)?;
}
if self.date_modified.is_some() {
state.serialize_field("date_modified", &self.date_modified)?;
}
if self.author.is_some() {
state.serialize_field("author", &self.author)?;
}
if self.tags.is_some() {
state.serialize_field("tags", &self.tags)?;
}
if self.attachments.is_some() {
state.serialize_field("attachments", &self.attachments)?;
}
state.end()
}
}
impl<'de> Deserialize<'de> for Item {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: Deserializer<'de>
{
enum Field {
Id,
Url,
ExternalUrl,
Title,
ContentHtml,
ContentText,
Summary,
Image,
BannerImage,
DatePublished,
DateModified,
Author,
Tags,
Attachments,
};
impl<'de> Deserialize<'de> for Field {
fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: Deserializer<'de>
{
struct FieldVisitor;
impl<'de> Visitor<'de> for FieldVisitor {
type Value = Field;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("non-expected field")
}
fn visit_str<E>(self, value: &str) -> Result<Field, E>
where E: de::Error
{
match value {
"id" => Ok(Field::Id),
"url" => Ok(Field::Url),
"external_url" => Ok(Field::ExternalUrl),
"title" => Ok(Field::Title),
"content_html" => Ok(Field::ContentHtml),
"content_text" => Ok(Field::ContentText),
"summary" => Ok(Field::Summary),
"image" => Ok(Field::Image),
"banner_image" => Ok(Field::BannerImage),
"date_published" => Ok(Field::DatePublished),
"date_modified" => Ok(Field::DateModified),
"author" => Ok(Field::Author),
"tags" => Ok(Field::Tags),
"attachments" => Ok(Field::Attachments),
_ => Err(de::Error::unknown_field(value, FIELDS)),
}
}
}
deserializer.deserialize_identifier(FieldVisitor)
}
}
struct ItemVisitor;
impl<'de> Visitor<'de> for ItemVisitor {
type Value = Item;
fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result {
formatter.write_str("non-expected thing")
}
fn visit_map<V>(self, mut map: V) -> Result<Item, V::Error>
where V: MapAccess<'de>
{
let mut id = None;
let mut url = None;
let mut external_url = None;
let mut title = None;
let mut content_html: Option<String> = None;
let mut content_text: Option<String> = None;
let mut summary = None;
let mut image = None;
let mut banner_image = None;
let mut date_published = None;
let mut date_modified = None;
let mut author = None;
let mut tags = None;
let mut attachments = None;
while let Some(key) = map.next_key()? {
match key {
Field::Id => {
if id.is_some() {
return Err(de::Error::duplicate_field("id"));
}
id = Some(map.next_value()?);
},
Field::Url => {
if url.is_some() {
return Err(de::Error::duplicate_field("url"));
}
url = map.next_value()?;
},
Field::ExternalUrl => {
if external_url.is_some() {
return Err(de::Error::duplicate_field("external_url"));
}
external_url = map.next_value()?;
},
Field::Title => {
if title.is_some() {
return Err(de::Error::duplicate_field("title"));
}
title = map.next_value()?;
},
Field::ContentHtml => {
if content_html.is_some() {
return Err(de::Error::duplicate_field("content_html"));
}
content_html = map.next_value()?;
},
Field::ContentText => {
if content_text.is_some() {
return Err(de::Error::duplicate_field("content_text"));
}
content_text = map.next_value()?;
},
Field::Summary => {
if summary.is_some() {
return Err(de::Error::duplicate_field("summary"));
}
summary = map.next_value()?;
},
Field::Image => {
if image.is_some() {
return Err(de::Error::duplicate_field("image"));
}
image = map.next_value()?;
},
Field::BannerImage => {
if banner_image.is_some() {
return Err(de::Error::duplicate_field("banner_image"));
}
banner_image = map.next_value()?;
},
Field::DatePublished => {
if date_published.is_some() {
return Err(de::Error::duplicate_field("date_published"));
}
date_published = map.next_value()?;
},
Field::DateModified => {
if date_modified.is_some() {
return Err(de::Error::duplicate_field("date_modified"));
}
date_modified = map.next_value()?;
},
Field::Author => {
if author.is_some() {
return Err(de::Error::duplicate_field("author"));
}
author = map.next_value()?;
},
Field::Tags => {
if tags.is_some() {
return Err(de::Error::duplicate_field("tags"));
}
tags = map.next_value()?;
},
Field::Attachments => {
if attachments.is_some() {
return Err(de::Error::duplicate_field("attachments"));
}
attachments = map.next_value()?;
},
}
}
let id = id.ok_or_else(|| de::Error::missing_field("id"))?;
let content = match (content_html, content_text) {
(Some(s), Some(t)) => {
Content::Both(s.to_string(), t.to_string())
},
(Some(s), _) => {
Content::Html(s.to_string())
},
(_, Some(t)) => {
Content::Text(t.to_string())
},
_ => return Err(de::Error::missing_field("content_html or content_text")),
};
Ok(Item {
id,
url,
external_url,
title,
content,
summary,
image,
banner_image,
date_published,
date_modified,
author,
tags,
attachments,
})
}
}
const FIELDS: &'static [&'static str] = &[
"id",
"url",
"external_url",
"title",
"content",
"summary",
"image",
"banner_image",
"date_published",
"date_modified",
"author",
"tags",
"attachments",
];
deserializer.deserialize_struct("Item", FIELDS, ItemVisitor)
}
}
#[cfg(test)]
mod tests {
use super::*;
use feed::Author;
use serde_json;
#[test]
#[allow(non_snake_case)]
fn serialize_item__content_html() {
let item = Item {
id: "1".into(),
url: Some("http://example.com/feed.json".into()),
external_url: Some("http://example.com/feed.json".into()),
title: Some("feed title".into()),
content: Content::Html("<p>content</p>".into()),
summary: Some("feed summary".into()),
image: Some("http://img.com/blah".into()),
banner_image: Some("http://img.com/blah".into()),
date_published: Some("2017-01-01 10:00:00".into()),
date_modified: Some("2017-01-01 10:00:00".into()),
author: Some(Author::new().name("bob jones").url("http://example.com").avatar("http://img.com/blah")),
tags: Some(vec!["json".into(), "feed".into()]),
attachments: Some(vec![]),
};
assert_eq!(
serde_json::to_string(&item).unwrap(),
r#"{"id":"1","url":"http://example.com/feed.json","external_url":"http://example.com/feed.json","title":"feed title","content_html":"<p>content</p>","content_text":null,"summary":"feed summary","image":"http://img.com/blah","banner_image":"http://img.com/blah","date_published":"2017-01-01 10:00:00","date_modified":"2017-01-01 10:00:00","author":{"name":"bob jones","url":"http://example.com","avatar":"http://img.com/blah"},"tags":["json","feed"],"attachments":[]}"#
);
}
#[test]
#[allow(non_snake_case)]
fn serialize_item__content_text() {
let item = Item {
id: "1".into(),
url: Some("http://example.com/feed.json".into()),
external_url: Some("http://example.com/feed.json".into()),
title: Some("feed title".into()),
content: Content::Text("content".into()),
summary: Some("feed summary".into()),
image: Some("http://img.com/blah".into()),
banner_image: Some("http://img.com/blah".into()),
date_published: Some("2017-01-01 10:00:00".into()),
date_modified: Some("2017-01-01 10:00:00".into()),
author: Some(Author::new().name("bob jones").url("http://example.com").avatar("http://img.com/blah")),
tags: Some(vec!["json".into(), "feed".into()]),
attachments: Some(vec![]),
};
assert_eq!(
serde_json::to_string(&item).unwrap(),
r#"{"id":"1","url":"http://example.com/feed.json","external_url":"http://example.com/feed.json","title":"feed title","content_html":null,"content_text":"content","summary":"feed summary","image":"http://img.com/blah","banner_image":"http://img.com/blah","date_published":"2017-01-01 10:00:00","date_modified":"2017-01-01 10:00:00","author":{"name":"bob jones","url":"http://example.com","avatar":"http://img.com/blah"},"tags":["json","feed"],"attachments":[]}"#
);
}
#[test]
#[allow(non_snake_case)]
fn serialize_item__content_both() {
let item = Item {
id: "1".into(),
url: Some("http://example.com/feed.json".into()),
external_url: Some("http://example.com/feed.json".into()),
title: Some("feed title".into()),
content: Content::Both("<p>content</p>".into(), "content".into()),
summary: Some("feed summary".into()),
image: Some("http://img.com/blah".into()),
banner_image: Some("http://img.com/blah".into()),
date_published: Some("2017-01-01 10:00:00".into()),
date_modified: Some("2017-01-01 10:00:00".into()),
author: Some(Author::new().name("bob jones").url("http://example.com").avatar("http://img.com/blah")),
tags: Some(vec!["json".into(), "feed".into()]),
attachments: Some(vec![]),
};
assert_eq!(
serde_json::to_string(&item).unwrap(),
r#"{"id":"1","url":"http://example.com/feed.json","external_url":"http://example.com/feed.json","title":"feed title","content_html":"<p>content</p>","content_text":"content","summary":"feed summary","image":"http://img.com/blah","banner_image":"http://img.com/blah","date_published":"2017-01-01 10:00:00","date_modified":"2017-01-01 10:00:00","author":{"name":"bob jones","url":"http://example.com","avatar":"http://img.com/blah"},"tags":["json","feed"],"attachments":[]}"#
);
}
#[test]
#[allow(non_snake_case)]
fn deserialize_item__content_html() {
let json = r#"{"id":"1","url":"http://example.com/feed.json","external_url":"http://example.com/feed.json","title":"feed title","content_html":"<p>content</p>","content_text":null,"summary":"feed summary","image":"http://img.com/blah","banner_image":"http://img.com/blah","date_published":"2017-01-01 10:00:00","date_modified":"2017-01-01 10:00:00","author":{"name":"bob jones","url":"http://example.com","avatar":"http://img.com/blah"},"tags":["json","feed"],"attachments":[]}"#;
let item: Item = serde_json::from_str(&json).unwrap();
let expected = Item {
id: "1".into(),
url: Some("http://example.com/feed.json".into()),
external_url: Some("http://example.com/feed.json".into()),
title: Some("feed title".into()),
content: Content::Html("<p>content</p>".into()),
summary: Some("feed summary".into()),
image: Some("http://img.com/blah".into()),
banner_image: Some("http://img.com/blah".into()),
date_published: Some("2017-01-01 10:00:00".into()),
date_modified: Some("2017-01-01 10:00:00".into()),
author: Some(Author::new().name("bob jones").url("http://example.com").avatar("http://img.com/blah")),
tags: Some(vec!["json".into(), "feed".into()]),
attachments: Some(vec![]),
};
assert_eq!(item, expected);
}
#[test]
#[allow(non_snake_case)]
fn deserialize_item__content_text() {
let json = r#"{"id":"1","url":"http://example.com/feed.json","external_url":"http://example.com/feed.json","title":"feed title","content_html":null,"content_text":"content","summary":"feed summary","image":"http://img.com/blah","banner_image":"http://img.com/blah","date_published":"2017-01-01 10:00:00","date_modified":"2017-01-01 10:00:00","author":{"name":"bob jones","url":"http://example.com","avatar":"http://img.com/blah"},"tags":["json","feed"],"attachments":[]}"#;
let item: Item = serde_json::from_str(&json).unwrap();
let expected = Item {
id: "1".into(),
url: Some("http://example.com/feed.json".into()),
external_url: Some("http://example.com/feed.json".into()),
title: Some("feed title".into()),
content: Content::Text("content".into()),
summary: Some("feed summary".into()),
image: Some("http://img.com/blah".into()),
banner_image: Some("http://img.com/blah".into()),
date_published: Some("2017-01-01 10:00:00".into()),
date_modified: Some("2017-01-01 10:00:00".into()),
author: Some(Author::new().name("bob jones").url("http://example.com").avatar("http://img.com/blah")),
tags: Some(vec!["json".into(), "feed".into()]),
attachments: Some(vec![]),
};
assert_eq!(item, expected);
}
#[test]
#[allow(non_snake_case)]
fn deserialize_item__content_both() {
let json = r#"{"id":"1","url":"http://example.com/feed.json","external_url":"http://example.com/feed.json","title":"feed title","content_html":"<p>content</p>","content_text":"content","summary":"feed summary","image":"http://img.com/blah","banner_image":"http://img.com/blah","date_published":"2017-01-01 10:00:00","date_modified":"2017-01-01 10:00:00","author":{"name":"bob jones","url":"http://example.com","avatar":"http://img.com/blah"},"tags":["json","feed"],"attachments":[]}"#;
let item: Item = serde_json::from_str(&json).unwrap();
let expected = Item {
id: "1".into(),
url: Some("http://example.com/feed.json".into()),
external_url: Some("http://example.com/feed.json".into()),
title: Some("feed title".into()),
content: Content::Both("<p>content</p>".into(), "content".into()),
summary: Some("feed summary".into()),
image: Some("http://img.com/blah".into()),
banner_image: Some("http://img.com/blah".into()),
date_published: Some("2017-01-01 10:00:00".into()),
date_modified: Some("2017-01-01 10:00:00".into()),
author: Some(Author::new().name("bob jones").url("http://example.com").avatar("http://img.com/blah")),
tags: Some(vec!["json".into(), "feed".into()]),
attachments: Some(vec![]),
};
assert_eq!(item, expected);
}
}

252
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@ -0,0 +1,252 @@
//! JSON Feed is a syndication format similar to ATOM and RSS, using JSON
//! instead of XML
//!
//! This crate can serialize and deserialize between JSON Feed strings
//! and Rust data structures. It also allows for programmatically building
//! a JSON Feed
//!
//! Example:
//!
//! ```rust
//! extern crate jsonfeed;
//!
//! use jsonfeed::{Feed, Item};
//!
//! fn run() -> Result<(), jsonfeed::Error> {
//! let j = r#"{
//! "title": "my feed",
//! "version": "https://jsonfeed.org/version/1",
//! "items": []
//! }"#;
//! let feed = jsonfeed::from_str(j).unwrap();
//!
//! let new_feed = Feed::builder()
//! .title("some other feed")
//! .item(Item::builder()
//! .title("some item title")
//! .content_html("<p>Hello, World</p>")
//! .build()?)
//! .item(Item::builder()
//! .title("some other item title")
//! .content_text("Hello, World!")
//! .build()?)
//! .build();
//! println!("{}", jsonfeed::to_string(&new_feed).unwrap());
//! Ok(())
//! }
//! fn main() {
//! let _ = run();
//! }
//! ```
extern crate serde;
#[macro_use] extern crate error_chain;
#[macro_use] extern crate serde_derive;
extern crate serde_json;
mod errors;
mod item;
mod feed;
mod builder;
pub use errors::*;
pub use item::*;
pub use feed::{Feed, Author, Attachment};
use std::io::Write;
/// Attempts to convert a string slice to a Feed object
///
/// Example
///
/// ```rust
/// # extern crate jsonfeed;
/// # use jsonfeed::Feed;
/// # use std::default::Default;
/// # fn main() {
/// let json = r#"{"version": "https://jsonfeed.org/version/1", "title": "", "items": []}"#;
/// let feed: Feed = jsonfeed::from_str(&json).unwrap();
///
/// assert_eq!(feed, Feed::default());
/// # }
/// ```
pub fn from_str(s: &str) -> Result<Feed> {
Ok(serde_json::from_str(s)?)
}
/// Deserialize a Feed object from an IO stream of JSON
pub fn from_reader<R: ::std::io::Read>(r: R) -> Result<Feed> {
Ok(serde_json::from_reader(r)?)
}
/// Deserialize a Feed object from bytes of JSON text
pub fn from_slice<'a>(v: &'a [u8]) -> Result<Feed> {
Ok(serde_json::from_slice(v)?)
}
/// Convert a serde_json::Value type to a Feed object
pub fn from_value(value: serde_json::Value) -> Result<Feed> {
Ok(serde_json::from_value(value)?)
}
/// Serialize a Feed to a JSON Feed string
pub fn to_string(value: &Feed) -> Result<String> {
Ok(serde_json::to_string(value)?)
}
/// Pretty-print a Feed to a JSON Feed string
pub fn to_string_pretty(value: &Feed) -> Result<String> {
Ok(serde_json::to_string_pretty(value)?)
}
/// Convert a Feed to a serde_json::Value
pub fn to_value(value: Feed) -> Result<serde_json::Value> {
Ok(serde_json::to_value(value)?)
}
/// Convert a Feed to a vector of bytes of JSON
pub fn to_vec(value: &Feed) -> Result<Vec<u8>> {
Ok(serde_json::to_vec(value)?)
}
/// Convert a Feed to a vector of bytes of pretty-printed JSON
pub fn to_vec_pretty(value: &Feed) -> Result<Vec<u8>> {
Ok(serde_json::to_vec_pretty(value)?)
}
/// Serialize a Feed to JSON and output to an IO stream
pub fn to_writer<W>(writer: W, value: &Feed) -> Result<()>
where W: Write
{
Ok(serde_json::to_writer(writer, value)?)
}
/// Serialize a Feed to pretty-printed JSON and output to an IO stream
pub fn to_writer_pretty<W>(writer: W, value: &Feed) -> Result<()>
where W: Write
{
Ok(serde_json::to_writer_pretty(writer, value)?)
}
#[cfg(test)]
mod tests {
use super::*;
use std::io::Cursor;
#[test]
fn from_str() {
let feed = r#"{"version": "https://jsonfeed.org/version/1","title":"","items":[]}"#;
let expected = Feed::default();
assert_eq!(
super::from_str(&feed).unwrap(),
expected
);
}
#[test]
fn from_reader() {
let feed = r#"{"version": "https://jsonfeed.org/version/1","title":"","items":[]}"#;
let feed = feed.as_bytes();
let feed = Cursor::new(feed);
let expected = Feed::default();
assert_eq!(
super::from_reader(feed).unwrap(),
expected
);
}
#[test]
fn from_slice() {
let feed = r#"{"version": "https://jsonfeed.org/version/1","title":"","items":[]}"#;
let feed = feed.as_bytes();
let expected = Feed::default();
assert_eq!(
super::from_slice(&feed).unwrap(),
expected
);
}
#[test]
fn from_value() {
let feed = r#"{"version": "https://jsonfeed.org/version/1","title":"","items":[]}"#;
let feed: serde_json::Value = serde_json::from_str(&feed).unwrap();
let expected = Feed::default();
assert_eq!(
super::from_value(feed).unwrap(),
expected
);
}
#[test]
fn to_string() {
let feed = Feed::default();
let expected = r#"{"version":"https://jsonfeed.org/version/1","title":"","items":[]}"#;
assert_eq!(
super::to_string(&feed).unwrap(),
expected
);
}
#[test]
fn to_string_pretty() {
let feed = Feed::default();
let expected = r#"{
"version": "https://jsonfeed.org/version/1",
"title": "",
"items": []
}"#;
assert_eq!(
super::to_string_pretty(&feed).unwrap(),
expected
);
}
#[test]
fn to_value() {
let feed = r#"{"version":"https://jsonfeed.org/version/1","title":"","items":[]}"#;
let expected: serde_json::Value = serde_json::from_str(&feed).unwrap();
assert_eq!(
super::to_value(Feed::default()).unwrap(),
expected
);
}
#[test]
fn to_vec() {
let feed = r#"{"version":"https://jsonfeed.org/version/1","title":"","items":[]}"#;
let expected = feed.as_bytes();
assert_eq!(
super::to_vec(&Feed::default()).unwrap(),
expected
);
}
#[test]
fn to_vec_pretty() {
let feed = r#"{
"version": "https://jsonfeed.org/version/1",
"title": "",
"items": []
}"#;
let expected = feed.as_bytes();
assert_eq!(
super::to_vec_pretty(&Feed::default()).unwrap(),
expected
);
}
#[test]
fn to_writer() {
let feed = r#"{"version":"https://jsonfeed.org/version/1","title":"","items":[]}"#;
let feed = feed.as_bytes();
let mut writer = Cursor::new(Vec::with_capacity(feed.len()));
super::to_writer(&mut writer, &Feed::default()).expect("Could not write to writer");
let result = writer.into_inner();
assert_eq!(result, feed);
}
#[test]
fn to_writer_pretty() {
let feed = r#"{
"version": "https://jsonfeed.org/version/1",
"title": "",
"items": []
}"#;
let feed = feed.as_bytes();
let mut writer = Cursor::new(Vec::with_capacity(feed.len()));
super::to_writer_pretty(&mut writer, &Feed::default()).expect("Could not write to writer");
let result = writer.into_inner();
assert_eq!(result, feed);
}
}