Podcast-focused library
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package podcast_test
import (
"fmt"
"net/http"
"net/http/httptest"
"os"
"strconv"
"github.com/arenzana/podcast"
)
func Example_httpHandlers() {
// ResponseWriter example using Podcast.Encode(w io.Writer).
//
httpHandler := func(w http.ResponseWriter, r *http.Request) {
// instantiate a new Podcast
p := podcast.New(
"arenzana Podcasts",
"https://arenzana.org/",
"An example Podcast",
&pubDate, &updatedDate,
)
// add some channel properties
p.AddAuthor("Jane Doe", "me@janedoe.com")
p.AddAtomLink("http://arenzana.org/feed.rss")
p.AddImage("http://janedoe.com/i.jpg")
p.AddSummary(`link <a href="http://example.com">example.com</a>`)
p.IExplicit = "no"
for i := int64(1); i < 3; i++ {
n := strconv.FormatInt(i, 10)
d := pubDate.AddDate(0, 0, int(i))
// create an Item
item := podcast.Item{
Title: "Episode " + n,
Link: "http://example.com/" + n + ".mp3",
Description: "Description for Episode " + n,
PubDate: &d,
}
item.AddImage("http://example.com/episode-" + n + ".png")
item.AddSummary(`item <a href="http://example.com">example.com</a>`)
// add a Download to the Item
item.AddEnclosure("http://e.com/"+n+".mp3", podcast.MP3, 55*(i+1))
// add the Item and check for validation errors
if _, err := p.AddItem(item); err != nil {
fmt.Println(item.Title, ": error", err.Error())
return
}
}
// set the Content Type to that of XML
w.Header().Set("Content-Type", "application/xml")
// finally, Encode and write the Podcast to the ResponseWriter.
//
// a simple pattern is to handle any errors within this check.
// alternatively if using middleware, you can just return
// the Podcast entity as it also implements the io.Writer interface
// that complies with several middleware packages.
if err := p.Encode(w); err != nil {
http.Error(w, err.Error(), http.StatusInternalServerError)
}
}
rr := httptest.NewRecorder()
httpHandler(rr, nil)
os.Stdout.Write(rr.Body.Bytes())
// Output:
// <?xml version="1.0" encoding="UTF-8"?>
// <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd">
// <channel>
// <title>arenzana Podcasts</title>
// <link>http://arenzana.org/</link>
// <description>An example Podcast</description>
// <generator>go podcast v1.3.1 (github.com/arenzana/podcast)</generator>
// <language>en-us</language>
// <lastBuildDate>Mon, 06 Feb 2017 08:21:52 +0000</lastBuildDate>
// <managingEditor>me@janedoe.com (Jane Doe)</managingEditor>
// <pubDate>Sat, 04 Feb 2017 08:21:52 +0000</pubDate>
// <image>
// <url>http://janedoe.com/i.jpg</url>
// <title>arenzana Podcasts</title>
// <link>http://arenzana.org/</link>
// </image>
// <atom:link href="http://arenzana.org/feed.rss" rel="self" type="application/rss+xml"></atom:link>
// <itunes:author>me@janedoe.com (Jane Doe)</itunes:author>
// <itunes:summary><![CDATA[link <a href="http://example.com">example.com</a>]]></itunes:summary>
// <itunes:image href="http://janedoe.com/i.jpg"></itunes:image>
// <itunes:explicit>no</itunes:explicit>
// <item>
// <guid>http://e.com/1.mp3</guid>
// <title>Episode 1</title>
// <link>http://example.com/1.mp3</link>
// <description>Description for Episode 1</description>
// <pubDate>Sun, 05 Feb 2017 08:21:52 +0000</pubDate>
// <enclosure url="http://e.com/1.mp3" length="110" type="audio/mpeg"></enclosure>
// <itunes:author>me@janedoe.com (Jane Doe)</itunes:author>
// <itunes:summary><![CDATA[item <a href="http://example.com">example.com</a>]]></itunes:summary>
// <itunes:image href="http://example.com/episode-1.png"></itunes:image>
// </item>
// <item>
// <guid>http://e.com/2.mp3</guid>
// <title>Episode 2</title>
// <link>http://example.com/2.mp3</link>
// <description>Description for Episode 2</description>
// <pubDate>Mon, 06 Feb 2017 08:21:52 +0000</pubDate>
// <enclosure url="http://e.com/2.mp3" length="165" type="audio/mpeg"></enclosure>
// <itunes:author>me@janedoe.com (Jane Doe)</itunes:author>
// <itunes:summary><![CDATA[item <a href="http://example.com">example.com</a>]]></itunes:summary>
// <itunes:image href="http://example.com/episode-2.png"></itunes:image>
// </item>
// </channel>
// </rss>
}
func Example_ioWriter() {
// instantiate a new Podcast
p := podcast.New(
"Sample Podcasts",
"http://example.com/",
"An example Podcast",
&createdDate, &updatedDate,
)
// add some channel properties
p.ISubtitle = "A simple Podcast"
p.AddSummary(`link <a href="http://example.com">example.com</a>`)
p.AddImage("http://example.com/podcast.jpg")
p.AddAuthor("Jane Doe", "jane.doe@example.com")
p.AddAtomLink("http://example.com/atom.rss")
for i := int64(9); i < 11; i++ {
n := strconv.FormatInt(i, 10)
d := pubDate.AddDate(0, 0, int(i))
// create an Item
item := podcast.Item{
Title: "Episode " + n,
Description: "Description for Episode " + n,
ISubtitle: "A simple episode " + n,
PubDate: &d,
}
item.AddImage("http://example.com/episode-" + n + ".png")
item.AddSummary(`item k <a href="http://example.com">example.com</a>`)
// add a Download to the Item
item.AddEnclosure("http://example.com/"+n+".mp3", podcast.MP3, 55*(i+1))
// add the Item and check for validation errors
if _, err := p.AddItem(item); err != nil {
os.Stderr.WriteString("item validation error: " + err.Error())
}
}
// Podcast.Encode writes to an io.Writer
if err := p.Encode(os.Stdout); err != nil {
fmt.Println("error writing to stdout:", err.Error())
}
// Output:
// <?xml version="1.0" encoding="UTF-8"?>
// <rss version="2.0" xmlns:atom="http://www.w3.org/2005/Atom" xmlns:itunes="http://www.itunes.com/dtds/podcast-1.0.dtd">
// <channel>
// <title>Sample Podcasts</title>
// <link>http://example.com/</link>
// <description>An example Podcast</description>
// <generator>go podcast v1.3.1 (github.com/arenzana/podcast)</generator>
// <language>en-us</language>
// <lastBuildDate>Mon, 06 Feb 2017 08:21:52 +0000</lastBuildDate>
// <managingEditor>jane.doe@example.com (Jane Doe)</managingEditor>
// <pubDate>Wed, 01 Feb 2017 08:21:52 +0000</pubDate>
// <image>
// <url>http://example.com/podcast.jpg</url>
// <title>Sample Podcasts</title>
// <link>http://example.com/</link>
// </image>
// <atom:link href="http://example.com/atom.rss" rel="self" type="application/rss+xml"></atom:link>
// <itunes:author>jane.doe@example.com (Jane Doe)</itunes:author>
// <itunes:subtitle>A simple Podcast</itunes:subtitle>
// <itunes:summary><![CDATA[link <a href="http://example.com">example.com</a>]]></itunes:summary>
// <itunes:image href="http://example.com/podcast.jpg"></itunes:image>
// <item>
// <guid>http://example.com/9.mp3</guid>
// <title>Episode 9</title>
// <link>http://example.com/9.mp3</link>
// <description>Description for Episode 9</description>
// <pubDate>Mon, 13 Feb 2017 08:21:52 +0000</pubDate>
// <enclosure url="http://example.com/9.mp3" length="550" type="audio/mpeg"></enclosure>
// <itunes:author>jane.doe@example.com (Jane Doe)</itunes:author>
// <itunes:subtitle>A simple episode 9</itunes:subtitle>
// <itunes:summary><![CDATA[item k <a href="http://example.com">example.com</a>]]></itunes:summary>
// <itunes:image href="http://example.com/episode-9.png"></itunes:image>
// </item>
// <item>
// <guid>http://example.com/10.mp3</guid>
// <title>Episode 10</title>
// <link>http://example.com/10.mp3</link>
// <description>Description for Episode 10</description>
// <pubDate>Tue, 14 Feb 2017 08:21:52 +0000</pubDate>
// <enclosure url="http://example.com/10.mp3" length="605" type="audio/mpeg"></enclosure>
// <itunes:author>jane.doe@example.com (Jane Doe)</itunes:author>
// <itunes:subtitle>A simple episode 10</itunes:subtitle>
// <itunes:summary><![CDATA[item k <a href="http://example.com">example.com</a>]]></itunes:summary>
// <itunes:image href="http://example.com/episode-10.png"></itunes:image>
// </item>
// </channel>
// </rss>
}