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# Nim JSONFeed Syndication module
# Written by John Conway
# Released under the MIT open source license.
import strutils
import sequtils
import json
import streams
import sugar
type
JSONFeed* = ref object of RootObj
author*: JSONFeedAuthor
version*: string
title*: string
home_page_url*: string
feed_url*: string
description*: string
next_url*: string
icon*: string
favicon*: string
expired*: bool
hubs*: seq[JSONFeedHub]
items*: seq[JSONFeedItem]
JSONFeedHub* = object
hubType: string
url: string
JSONFeedAuthor* = object
name*: string
url*: string
avatar*: string
JSONFeedItem* = object
author*: JSONFeedAuthor
id*: string
url*: string
external_url*: string
title*: string
content_html*: string
content_text*: string
summary*: string
image*: string
banner_image*: string
date_published*: string
date_modified*: string
tags*: seq[string]
attachments*: seq[JSONFeedAttachment]
JSONFeedAttachment* = object
url*: string
mime_type*: string
title*: string
size_in_bytes*: int
duration_in_seconds*: int
proc parseItem( node: JsonNode) : JSONFeedItem =
var item: JSONFeedItem = JSONFeedItem()
if node.getOrDefault( "author" ) != nil:
let author = node["author"]
item.author.name = getStr( author.getOrDefault "name" )
item.author.url = getStr( author.getOrDefault "url" )
item.author.avatar = getStr( author.getOrDefault "avatar" )
item.id = getStr( node.getOrDefault "id" )
item.url = getStr( node.getOrDefault "url" )
item.external_url = getStr( node.getOrDefault "external_url" )
item.title = getStr( node.getOrDefault "title" )
item.content_html = getStr( node.getOrDefault "content_html" )
item.content_text = getStr( node.getOrDefault "content_text" )
item.summary = getStr( node.getOrDefault "summary" )
item.image = getStr( node.getOrDefault "image" )
item.banner_image = getStr( node.getOrDefault "banner_image" )
item.date_published = getStr( node.getOrDefault "date_published" )
item.date_modified = getStr( node.getOrDefault "date_modified" )
if node.getOrDefault( "tags" ) != nil:
for tag in node["tags"]:
item.tags.add( tag.to(string) )
if node.getOrDefault( "attachments" ) != nil:
for jattach in node["attachments"]:
var attachment: JSONFeedAttachment = JSONFeedAttachment()
attachment.url = getStr( jattach.getOrDefault "url" )
attachment.mime_type = getStr( jattach.getOrDefault "mime_type" )
attachment.title = getStr( jattach.getOrDefault "title" )
attachment.size_in_bytes = getInt( jattach.getOrDefault "size_in_bytes" )
attachment.duration_in_seconds = getInt( jattach.getOrDefault "duration_in_seconds" )
item.attachments.add( attachment )
return item
proc parseJSONFeed*(data: string): JSONFeed =
let node = data.parseJson()
var feed: JSONFeed = JSONFeed()
if node.getOrDefault( "author" ) != nil:
let author = node["author"]
feed.author.name = getStr( author.getOrDefault "name" )
feed.author.url = getStr( author.getOrDefault "url" )
feed.author.avatar = getStr( author.getOrDefault "avatar" )
feed.version = getStr( node.getOrDefault "version" )
feed.title = getStr( node.getOrDefault "title" )
feed.home_page_url = getStr( node.getOrDefault "home_page_url" )
feed.feed_url = getStr( node.getOrDefault "feed_url" )
feed.description = getStr( node.getOrDefault "description" ) # What is this?
feed.next_url = getStr( node.getOrDefault "next_url" )
feed.icon = getStr( node.getOrDefault "icon" )
feed.favicon = getStr( node.getOrDefault "favicon" )
if node.getOrDefault( "expired" ) != nil:
feed.expired = node["expired"].getBool()
if node.getOrDefault( "hubs" ) != nil:
for jhub in node["hubs"]:
var hub: JSONFeedHub = JSONFeedHub()
hub.hubType = getStr( jhub.getOrDefault "url" )
hub.url = getStr( jhub.getOrDefault "mime_type" )
feed.hubs.add( hub )
feed.items = @[]
if node.getOrDefault( "items" ) != nil:
for item in node["items"]:
feed.items.add item.parseItem()
return feed
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