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|
package sitemaps
import (
"encoding/xml"
"fmt"
"strings"
"time"
)
const (
xmlns = "http://www.sitemaps.org/schemas/sitemap/0.9"
)
type ChangeFreq string
func (c *ChangeFreq) UnmarshalText(text []byte) error {
v, ok := map[string]ChangeFreq{
"always": Always,
"hourly": Hourly,
"daily": Daily,
"weekly": Weekly,
"monthly": Monthly,
"yearly": Yearly,
"never": Never,
}[strings.ToLower(string(text))]
if !ok {
return fmt.Errorf("Unknown change frequency %s", text)
} else {
*c = v
}
return nil
}
func (c ChangeFreq) MarshalText() ([]byte, error) {
return []byte(c), nil
}
const (
Always ChangeFreq = "always"
Hourly = "hourly"
Daily = "daily"
Weekly = "weekly"
Monthly = "monthly"
Yearly = "yearly"
Never = "never"
)
type SitemapTime time.Time
func (t *SitemapTime) UnmarshalText(text []byte) error {
p, err := time.Parse(time.RFC3339, string(text))
if err != nil {
return err
}
*t = SitemapTime(p)
return nil
}
func (t SitemapTime) MarshalText() ([]byte, error) {
return []byte(time.Time(t).Format(time.RFC3339)), nil
}
type Sitemap struct {
XMLName xml.Name
Urls []*SiteUrl `xml:"url"`
}
type SiteUrl struct {
Location string `xml:"loc"`
LastModified *time.Time `xml:"lastmod,omitempty"`
ChangeFrequency ChangeFreq `xml:"changefreq,omitempty"`
Priority float32 `xml:"priority,omitempty"`
}
func NewSitemap() *Sitemap {
return &Sitemap{
XMLName: xml.Name{Local: "urlset", Space: xmlns},
}
}
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