podcasts

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Published: Aug 31, 2021 License: MIT Imports: 8 Imported by: 2

README

podcasts

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Podcast generator written in Go.

Install

go get github.com/jbub/podcasts

Docs

https://godoc.org/github.com/jbub/podcasts

Example usage

package main

import (
	"log"
	"os"
	"time"

	"github.com/jbub/podcasts"
)

func main() {
	// initialize the podcast
	p := &podcasts.Podcast{
		Title:       "My podcast",
		Description: "This is my very simple podcast.",
		Language:    "EN",
		Link:        "http://www.example-podcast.com/my-podcast",
		Copyright:   "2015 My podcast copyright",
	}

	// add first podcast item
	p.AddItem(&podcasts.Item{
		Title:    "Episode 1",
		GUID:     "http://www.example-podcast.com/my-podcast/1/episode-one",
		PubDate:  podcasts.NewPubDate(time.Now()),
		Duration: podcasts.NewDuration(time.Second * 230),
		Enclosure: &podcasts.Enclosure{
			URL:    "http://www.example-podcast.com/my-podcast/1/episode.mp3",
			Length: "12312",
			Type:   "MP3",
		},
	})

	// add second podcast item
	p.AddItem(&podcasts.Item{
		Title:   "Episode 2",
		GUID:    "http://www.example-podcast.com/my-podcast/2/episode-two",
		PubDate: podcasts.NewPubDate(time.Now()),
		Duration: podcasts.NewDuration(time.Second * 320),
		Enclosure: &podcasts.Enclosure{
			URL:    "http://www.example-podcast.com/my-podcast/2/episode.mp3",
			Length: "46732",
			Type:   "MP3",
		},
	})

	// get podcast feed, you can pass options to customize it
	feed, err := p.Feed(
		podcasts.Author("Author Name"),
		podcasts.Block,
		podcasts.Explicit,
		podcasts.Complete,
		podcasts.NewFeedURL("http://www.example-podcast.com/new-feed-url"),
		podcasts.Subtitle("This is my very simple podcast subtitle."),
		podcasts.Summary("This is my very simple podcast summary."),
		podcasts.Owner("Podcast Owner", "owner@example-podcast.com"),
		podcasts.Image("http://www.example-podcast.com/my-podcast.jpg"),
	)

	// handle error
	if err != nil {
		log.Fatal(err)
	}

	// finally write the xml to any io.Writer
	feed.Write(os.Stdout)
}

Which gives us this XML output:

<?xml version="1.0" encoding="UTF-8"?>
<rss xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd" version="2.0">
  <channel>
    <title>My podcast</title>
    <link>http://www.example-podcast.com/my-podcast</link>
    <copyright>2015 My podcast copyright</copyright>
    <language>EN</language>
    <description>This is my very simple podcast.</description>
    <itunes:author>Author Name</itunes:author>
    <itunes:block>yes</itunes:block>
    <itunes:explicit>yes</itunes:explicit>
    <itunes:complete>yes</itunes:complete>
    <itunes:new-feed-url>http://www.example-podcast.com/new-feed-url</itunes:new-feed-url>
    <itunes:subtitle>This is my very simple podcast subtitle.</itunes:subtitle>
    <itunes:summary><![CDATA[This is my very simple podcast summary.]]></itunes:summary>
    <itunes:owner>
      <itunes:name>Podcast Owner</itunes:name>
      <itunes:email>owner@example-podcast.com</itunes:email>
    </itunes:owner>
    <itunes:image href="http://www.example-podcast.com/my-podcast.jpg"></itunes:image>
    <item>
      <title>Episode 1</title>
      <guid>http://www.example-podcast.com/my-podcast/1/episode-one</guid>
      <pubDate>Tue, 10 Nov 2009 23:00:00 +0000</pubDate>
      <itunes:duration>3:50</itunes:duration>
      <enclosure url="http://www.example-podcast.com/my-podcast/1/episode.mp3" length="12312" type="MP3"></enclosure>
    </item>
    <item>
      <title>Episode 2</title>
      <guid>http://www.example-podcast.com/my-podcast/2/episode-two</guid>
      <pubDate>Tue, 10 Nov 2009 23:00:00 +0000</pubDate>
      <itunes:duration>5:20</itunes:duration>
      <enclosure url="http://www.example-podcast.com/my-podcast/2/episode.mp3" length="46732" type="MP3"></enclosure>
    </item>
  </channel>
</rss>

Documentation

Overview

Package podcasts implements a podcast generator.

// initialize the podcast
p := &podcasts.Podcast{
    Title:       "My podcast",
    Description: "This is my very simple podcast.",
    Language:    "EN",
    Link:        "http://www.example-podcast.com/my-podcast",
    Copyright:   "2015 My podcast copyright",
}

// add first podcast item
p.AddItem(&podcasts.Item{
    Title:   "Episode 1",
    GUID:    "http://www.example-podcast.com/my-podcast/1/episode-one",
    PubDate: podcasts.NewPubDate(time.Now()),
    Duration: podcasts.NewDuration(time.Second * 320),
    Enclosure: &podcasts.Enclosure{
        URL:    "http://www.example-podcast.com/my-podcast/1/episode.mp3",
        Length: "12312",
        Type:   "MP3",
    },
})

// add second podcast item
p.AddItem(&podcasts.Item{
    Title:   "Episode 2",
    GUID:    "http://www.example-podcast.com/my-podcast/2/episode-two",
    PubDate: podcasts.NewPubDate(time.Now()),
    Duration: podcasts.NewDuration(time.Second * 210),
    Enclosure: &podcasts.Enclosure{
        URL:    "http://www.example-podcast.com/my-podcast/2/episode.mp3",
        Length: "46732",
        Type:   "MP3",
    },
})

// get podcast feed, you can pass options to customize it
feed, err := p.Feed(
    podcasts.Author("Author Name"),
    podcasts.Block,
    podcasts.Explicit,
    podcasts.Complete,
    podcasts.NewFeedURL("http://www.example-podcast.com/new-feed-url"),
    podcasts.Subtitle("This is my very simple podcast subtitle."),
    podcasts.Summary("This is my very simple podcast summary."),
    podcasts.Owner("Podcast Owner", "owner@example-podcast.com"),
    podcasts.Image("http://www.example-podcast.com/my-podcast.jpg"),
)

// handle error
if err != nil {
    log.Fatal(err)
}

// finally write the xml to any io.Writer
feed.Write(os.Stdout)

Index

Constants

View Source
const (
	// ValueYes represents positive value used in XML feed.
	ValueYes = "yes"
)

Variables

View Source
var (
	// ErrInvalidURL represents a error returned for invalid url.
	ErrInvalidURL = errors.New("podcasts: invalid url")

	// ErrInvalidImage represents a error returned for invalid image.
	ErrInvalidImage = errors.New("podcasts: invalid image")
)

Functions

func Author

func Author(author string) func(f *Feed) error

Author sets itunes:author of given feed.

func Block

func Block(f *Feed) error

Block enables itunes:block of given feed.

func Complete

func Complete(f *Feed) error

Complete enables itunes:complete of given feed.

func Explicit

func Explicit(f *Feed) error

Explicit enables itunes:explicit of given feed.

func Image

func Image(href string) func(f *Feed) error

Image sets itunes:image of given feed.

func NewFeedURL

func NewFeedURL(newURL string) func(f *Feed) error

NewFeedURL sets itunes:new-feed-url of given feed.

func Owner

func Owner(name string, email string) func(f *Feed) error

Owner sets itunes:owner of given feed.

func Subtitle

func Subtitle(subtitle string) func(f *Feed) error

Subtitle sets itunes:subtitle of given feed.

func Summary

func Summary(summary string) func(f *Feed) error

Summary sets itunes:summary of given feed.

Types

type Channel

type Channel struct {
	XMLName     xml.Name       `xml:"channel"`
	Title       string         `xml:"title"`
	Link        string         `xml:"link"`
	Copyright   string         `xml:"copyright"`
	Language    string         `xml:"language"`
	Description string         `xml:"description"`
	Author      string         `xml:"itunes:author,omitempty"`
	Block       string         `xml:"itunes:block,omitempty"`
	Explicit    string         `xml:"itunes:explicit,omitempty"`
	Complete    string         `xml:"itunes:complete,omitempty"`
	NewFeedURL  string         `xml:"itunes:new-feed-url,omitempty"`
	Subtitle    string         `xml:"itunes:subtitle,omitempty"`
	Summary     *ItunesSummary `xml:"itunes:summary,omitempty"`
	Owner       *ItunesOwner
	Image       *ItunesImage
	Items       []*Item
	Categories  []*ItunesCategory
}

Channel represents a RSS channel for given podcast.

type Duration

type Duration struct {
	time.Duration
}

Duration represents itunes:duration attribute of given podcast item.

func NewDuration

func NewDuration(d time.Duration) *Duration

NewDuration returns a new Duration.

func (Duration) MarshalXML

func (d Duration) MarshalXML(e *xml.Encoder, start xml.StartElement) error

MarshalXML marshalls duration using HH:MM:SS, H:MM:SS, MM:SS, M:SS formats.

type Enclosure

type Enclosure struct {
	XMLName xml.Name `xml:"enclosure"`
	URL     string   `xml:"url,attr"`
	Length  string   `xml:"length,attr,omitempty"`
	Type    string   `xml:"type,attr"`
}

Enclosure represents audio or video file of given item.

type Feed

type Feed struct {
	XMLName xml.Name `xml:"rss"`
	Xmlns   string   `xml:"xmlns:itunes,attr"`
	Version string   `xml:"version,attr"`
	Channel *Channel
}

Feed wraps the given RSS channel.

func (*Feed) SetOptions

func (f *Feed) SetOptions(options ...func(f *Feed) error) error

SetOptions sets options of given feed.

func (*Feed) Write

func (f *Feed) Write(w io.Writer) error

Write writes marshalled XML to the given writer.

func (*Feed) XML

func (f *Feed) XML() (string, error)

XML marshalls feed to XML string.

type Item

type Item struct {
	XMLName         xml.Name       `xml:"item"`
	Title           string         `xml:"title"`
	GUID            string         `xml:"guid"`
	PubDate         *PubDate       `xml:"pubDate"`
	Author          string         `xml:"itunes:author,omitempty"`
	Block           string         `xml:"itunes:block,omitempty"`
	Duration        *Duration      `xml:"itunes:duration,omitempty"`
	Explicit        string         `xml:"itunes:explicit,omitempty"`
	ClosedCaptioned string         `xml:"itunes:isClosedCaptioned,omitempty"`
	Order           int            `xml:"itunes:order,omitempty"`
	Subtitle        string         `xml:"itunes:subtitle,omitempty"`
	Summary         *ItunesSummary `xml:"itunes:summary,omitempty"`
	Enclosure       *Enclosure
	Image           *ItunesImage
}

Item represents item of given channel.

type ItunesCategory

type ItunesCategory struct {
	XMLName    xml.Name `xml:"itunes:category"`
	Text       string   `xml:"text,attr"`
	Categories []*ItunesCategory
}

ItunesCategory represents itunes:category of given channel.

type ItunesImage

type ItunesImage struct {
	XMLName xml.Name `xml:"itunes:image"`
	Href    string   `xml:"href,attr"`
}

ItunesImage represents the itunes:image of given item or channel.

type ItunesOwner

type ItunesOwner struct {
	XMLName xml.Name `xml:"itunes:owner"`
	Name    string   `xml:"itunes:name"`
	Email   string   `xml:"itunes:email"`
}

ItunesOwner represents the itunes:owner of given channel.

type ItunesSummary

type ItunesSummary struct {
	Value string `xml:",cdata"`
}

ItunesSummary represents a summary of a Channel or Item that may contain embedded HTML such as <a href="...">...</a> links.

type Podcast

type Podcast struct {
	Title       string
	Description string
	Link        string
	Language    string
	Copyright   string
	// contains filtered or unexported fields
}

Podcast represents a web podcast.

func (*Podcast) AddItem

func (p *Podcast) AddItem(item *Item)

AddItem adds an item to the podcast.

func (*Podcast) Feed

func (p *Podcast) Feed(options ...func(f *Feed) error) (*Feed, error)

Feed creates a new feed for current podcast.

type PubDate

type PubDate struct {
	time.Time
}

PubDate represents pubDate attribute of given podcast item.

func NewPubDate

func NewPubDate(d time.Time) *PubDate

NewPubDate returns a new PubDate.

func (PubDate) MarshalXML

func (p PubDate) MarshalXML(e *xml.Encoder, start xml.StartElement) error

MarshalXML marshalls pubdate using the rfc2822 time format.

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