Allow the user to generate a valid iri based on a uuid

atom.go

@@ -1,10 +1,12 @@
-package atomfeed
+package atom
 
 import (
+	"fmt"
 	"mime"
 	"regexp"
 	"strings"
 
+	"github.com/google/uuid"
 	"golang.org/x/text/language"
 )
 
@@ -61,8 +63,17 @@ func isXMLMediaType(mediaType string) bool {
 // isValidMediaType checks whether a string is a valid media type. It returns a
 // bool.
 func isValidMediaType(mediaType string) bool {
-	_, _, err := mime.ParseMediaType(mediaType)
-	return err == nil
+	mediaType, _, err := mime.ParseMediaType(mediaType)
+	if err != nil {
+		return false
+	}
+
+	typeParts := strings.Split(mediaType, "/")
+	if len(typeParts) != 2 || typeParts[0] == "" || typeParts[1] == "" {
+		return false
+	}
+
+	return true
 }
 
 // isValidLanguageTag checks whether a LanguageTag is valid. It returns a bool.
@@ -70,3 +81,8 @@ func isValidLanguageTag(tag LanguageTag) bool {
 	_, err := language.Parse(string(tag))
 	return err == nil
 }
+
+// NewURN generates an new valid IRI based on a UUID. It returns an IRI.
+func NewURN() IRI {
+	return IRI(fmt.Sprint("urn:uuid:", uuid.New()))
+}

category.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

commonAttributes.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import "fmt"
 

content.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"fmt"

date.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

entry.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"
@@ -34,10 +34,15 @@ type Entry struct {
 // the atom:entry contains an atom:source element that contains an atom:author
 // element or, in an Atom Feed Document, the atom:feed element contains an
 // atom:author element itself.
-func (e *Entry) checkAuthors() error {
+func (e *Entry) checkAuthors(authorInFeed bool) error {
 	if e.Authors == nil {
-		if e.Source.Authors == nil {
-			return errors.New("no authors set in entry")
+		if !authorInFeed {
+			if e.Source == nil {
+				return errors.New("no authors set in entry")
+			}
+			if e.Source.Authors == nil {
+				return errors.New("no authors set in entry")
+			}
 		}
 	} else {
 		for i, a := range e.Authors {
@@ -64,6 +69,54 @@ func NewEntry(title string) (*Entry, error) {
 	}, nil
 }
 
+// AddAuthor adds the Person as an author to the Entry.
+func (e *Entry) AddAuthor(p *Person) {
+	if e.Authors == nil {
+		e.Authors = make([]*Person, 1)
+		e.Authors[0] = p
+	} else {
+		e.Authors = append(e.Authors, p)
+	}
+
+	e.Updated.DateTime = DateTime(time.Now())
+}
+
+// AddCategory adds the Category to the Entry.
+func (e *Entry) AddCategory(c *Category) {
+	if e.Categories == nil {
+		e.Categories = make([]*Category, 1)
+		e.Categories[0] = c
+	} else {
+		e.Categories = append(e.Categories, c)
+	}
+
+	e.Updated.DateTime = DateTime(time.Now())
+}
+
+// AddContributor adds the Person as a contributor to the Entry.
+func (e *Entry) AddContributor(c *Person) {
+	if e.Contributors == nil {
+		e.Contributors = make([]*Person, 1)
+		e.Contributors[0] = c
+	} else {
+		e.Contributors = append(e.Contributors, c)
+	}
+
+	e.Updated.DateTime = DateTime(time.Now())
+}
+
+// AddLink adds the Link to the Entry.
+func (e *Entry) AddLink(l *Link) {
+	if e.Links == nil {
+		e.Links = make([]*Link, 1)
+		e.Links[0] = l
+	} else {
+		e.Links = append(e.Links, l)
+	}
+
+	e.Updated.DateTime = DateTime(time.Now())
+}
+
 // AddExtension adds the ExtensionElement to the Entry.
 func (e *Entry) AddExtension(x *ExtensionElement) {
 	if e.Extensions == nil {
@@ -87,7 +140,7 @@ func (e *Entry) Check() error {
 		}
 	}
 
-	if err := e.checkAuthors(); err != nil {
+	if err := e.checkAuthors(true); err != nil {
 		return fmt.Errorf("entry %v: %v", e.ID.URI, err)
 	}
 
@@ -160,7 +213,7 @@ func (e *Entry) Check() error {
 		// is not an XML media type [RFC3023], does not begin with "text/", and
 		// does not end with "/xml" or "+xml".
 		mediaType := e.Content.getType()
-		if !isXMLMediaType(mediaType) && !strings.HasPrefix(mediaType, "text/") {
+		if isValidMediaType(mediaType) && !isXMLMediaType(mediaType) && !strings.HasPrefix(mediaType, "text/") {
 			return fmt.Errorf("no summary element of entry %v but media type not xml", e.ID.URI)
 		}
 	}

extensionAttribute.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"encoding/xml"

extensionElement.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"encoding/xml"

feed.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"encoding/xml"
@@ -128,7 +128,7 @@ func (f *Feed) Check() error {
 	// least one atom:author element.
 	if f.Authors == nil {
 		for _, e := range f.Entries {
-			if err := e.checkAuthors(); err != nil {
+			if err := e.checkAuthors(false); err != nil {
 				return fmt.Errorf("no authors set in feed %v: %v", f.ID.URI, err)
 			}
 		}

generator.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

icon.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

id.go

@@ -1,10 +1,8 @@
-package atomfeed
+package atom
 
 import (
 	"errors"
 	"fmt"
-
-	"github.com/google/uuid"
 )
 
 type ID struct {
@@ -13,8 +11,8 @@ type ID struct {
 }
 
 // NewID creates a new ID. It returns a *ID.
-func NewID() *ID {
-	return &ID{URI: IRI(fmt.Sprint("urn:uuid:", uuid.New()))}
+func NewID(id string) *ID {
+	return &ID{URI: IRI(id)}
 }
 
 // Check checks the ID for incompatibilities with RFC4287. It returns an error.

inlineOtherContent.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

inlineTextContent.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

inlineXHTMLContent.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

link.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"
@@ -38,16 +38,22 @@ func (l *Link) Check() error {
 		}
 	}
 
-	if strings.Contains(l.Rel, ":") || !isValidIRI(IRI(l.Rel)) {
-		return fmt.Errorf("rel attribute %v of link %v not correctly formatted", l.Rel, l.Href)
+	if l.Rel != "" {
+		if strings.Contains(l.Rel, ":") && !isValidIRI(IRI(l.Rel)) {
+			return fmt.Errorf("rel attribute %v of link %v not correctly formatted", l.Rel, l.Href)
+		}
 	}
 
-	if !isValidMediaType(string(l.Type)) {
-		return fmt.Errorf("type attribute %v of link %v invalid media type", l.Type, l.Href)
+	if l.Type != "" {
+		if !isValidMediaType(string(l.Type)) {
+			return fmt.Errorf("type attribute %v of link %v invalid media type", l.Type, l.Href)
+		}
 	}
 
-	if !isValidLanguageTag(l.HrefLang) {
-		return fmt.Errorf("hreflang attribute %v of link %v invalid language tag", l.Type, l.HrefLang)
+	if l.HrefLang != "" {
+		if !isValidLanguageTag(l.HrefLang) {
+			return fmt.Errorf("hreflang attribute %v of link %v invalid language tag", l.Type, l.HrefLang)
+		}
 	}
 
 	if l.Content == nil {

logo.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

outOfLineContent.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

person.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"errors"

plainText.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import "errors"
 

source.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import "fmt"
 

text.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"fmt"

xhtmlText.go

@@ -1,4 +1,4 @@
-package atomfeed
+package atom
 
 import (
 	"encoding/xml"