atom/README.md

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# atom
An extensible Atom feed generator library that aims to be very close to RFC4287.
It diligently checks for compliance with the standard and provides functions for
easy creation and extension of elements.
## Installation
To install the latest version of the module, use the following command:
```sh
go get git.streifling.com/jason/atom@latest
```
## Usage
This library provides easy to use functions to safely create and extend elements
and attributes of an Atom feed. The intended way of using it entails using these
functions.
```go
package main
import (
"fmt"
"log"
"git.streifling.com/jason/atom"
)
func main() {
feed, err := atom.NewFeed("Example Feed")
if err != nil {
log.Fatalln(err)
}
author := atom.NewPerson("John Doe")
author.Email = "john.doe@example.com"
feed.AddAuthor(author)
entry, err := atom.NewEntry("First Entry")
if err != nil {
log.Fatalln(err)
}
content, err := atom.NewContent(atom.InlineText, "text", "This is the content of the first entry.")
if err != nil {
log.Fatalln(err)
}
entry.Content = content
feed.AddEntry(entry)
if err := feed.Check(); err != nil {
log.Fatalln(err)
}
feedString, err := feed.ToXML("utf-8")
if err != nil {
log.Fatalln(err)
}
fmt.Println(feedString)
}
```
It is also possible to use this library in a way similar to what other libraries
would provide. This is, of course, making it easier to make mistakes.
```go
package main
import (
"fmt"
"log"
"time"
"git.streifling.com/jason/atom"
)
func main() {
now := time.Now()
feed := &atom.Feed{
Title: &atom.PlainText{
Type: "text",
Text: "Example Feed",
},
ID: &atom.ID{URI: "urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6"},
Updated: &atom.Date{DateTime: atom.DateTime(now)},
Authors: []*atom.Person{
{
Name: "John Doe",
Email: "john.doe@example.com",
},
},
Entries: []*atom.Entry{
{
Title: &atom.PlainText{
Type: "text",
Text: "First Entry",
},
ID: &atom.ID{URI: "urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a"},
Updated: &atom.Date{DateTime: atom.DateTime(now)},
Content: &atom.InlineTextContent{
Type: "text",
Text: "This is the content of the first entry.",
},
},
},
}
feedString, err := feed.ToXML("utf-8")
if err != nil {
log.Fatalln(err)
}
fmt.Println(feedString)
}
```
The output of both ways of using it is an RFC4287 compliant Atom feed:
```xml
<?xml version="1.0" encoding="utf-8"?>
<feed xmlns="http://www.w3.org/2005/Atom">
<author>
<name>John Doe</name>
<email>john.doe@example.com</email>
</author>
<id>urn:uuid:60a76c80-d399-11d9-b93C-0003939e0af6</id>
<title type="text">Example Feed</title>
<updated>2024-10-18T05:49:08+02:00</updated>
<entry>
<content type="text">This is the content of the first entry.</content>
<id>urn:uuid:1225c695-cfb8-4ebb-aaaa-80da344efa6a</id>
<title type="text">First Entry</title>
<updated>2006-01-02T15:04:05+07:00</updated>
</entry>
</feed>
```