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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,118 @@ | ||
| package noembed | ||
|
|
||
| import ( | ||
| "encoding/json" | ||
| "errors" | ||
| "io" | ||
| "io/ioutil" | ||
| "net/http" | ||
| "regexp" | ||
| "strings" | ||
| ) | ||
|
|
||
| var noembedURL = "https://noembed.com/embed?url={url}" | ||
|
|
||
| // NoEmbed represents this package | ||
| type NoEmbed struct { | ||
| data *Data | ||
| } | ||
|
|
||
| // Data represents the data for noembed providers | ||
| type Data []struct { | ||
| Name string `json:"name"` | ||
| Patterns []Regex `json:"patterns"` | ||
| } | ||
|
|
||
| // Response represents the data returned by noembed server | ||
| type Response struct { | ||
| AuthorName string `json:"author_name"` | ||
| AuthorURL string `json:"author_url"` | ||
| ProviderName string `json:"provider_name"` | ||
| ProviderURL string `json:"provider_url"` | ||
| Title string `json:"title"` | ||
| Type string `json:"type"` | ||
| URL string `json:"url"` | ||
| HTML string `json:"html"` | ||
| Version string `json:"version"` | ||
| ThumbnailURL string `json:"thumbnail_url"` | ||
| ThumbnailWidth int `json:"thumbnail_width,string"` | ||
| ThumbnailHeight int `json:"thumbnail_height,string"` | ||
| Width int `json:"width,string"` | ||
| Height int `json:"height,string"` | ||
| } | ||
|
|
||
| // New returns a Noembed object | ||
| func New() *NoEmbed { | ||
| return &NoEmbed{} | ||
| } | ||
|
|
||
| // ParseProviders parses the raw json obtained from noembed.com | ||
| func (n *NoEmbed) ParseProviders(buf io.Reader) error { | ||
| data, err := ioutil.ReadAll(buf) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| var noembedData Data | ||
| err = json.Unmarshal(data, &noembedData) | ||
| if err != nil { | ||
| return err | ||
| } | ||
|
|
||
| n.data = &noembedData | ||
| return nil | ||
| } | ||
|
|
||
| // Get returns a noembed response object | ||
| func (n *NoEmbed) Get(url string) (resp *Response, err error) { | ||
| if !n.ValidURL(url) { | ||
| err = errors.New("Unsupported URL") | ||
| return | ||
| } | ||
|
|
||
| reqURL := strings.Replace(noembedURL, "{url}", url, 1) | ||
|
|
||
| var httpResp *http.Response | ||
| httpResp, err = http.Get(reqURL) | ||
| if err != nil { | ||
| return | ||
| } | ||
| defer httpResp.Body.Close() | ||
|
|
||
| var body []byte | ||
| body, err = ioutil.ReadAll(httpResp.Body) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| err = json.Unmarshal(body, &resp) | ||
| if err != nil { | ||
| return | ||
| } | ||
|
|
||
| return | ||
| } | ||
|
|
||
| // ValidURL is used to test if a url is supported by noembed | ||
| func (n *NoEmbed) ValidURL(url string) bool { | ||
| for _, entry := range *n.data { | ||
| for _, pattern := range entry.Patterns { | ||
| if pattern.Regexp.MatchString(url) { | ||
| return true | ||
| } | ||
| } | ||
| } | ||
| return false | ||
| } | ||
|
|
||
| // Regex Unmarshaler | ||
| type Regex struct { | ||
| regexp.Regexp | ||
| } | ||
|
|
||
| // UnmarshalText used to unmarshal regexp's from text | ||
| func (r *Regex) UnmarshalText(text []byte) error { | ||
| reg, err := regexp.Compile(string(text)) | ||
| r.Regexp = *reg | ||
| return err | ||
| } |
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