| // +build OMIT |
| |
| package main |
| |
| import ( |
| "encoding/json" |
| "errors" |
| "fmt" |
| "log" |
| "net/http" |
| ) |
| |
| func main() { |
| items, err := Get("golang") |
| if err != nil { |
| log.Fatal(err) |
| } |
| for _, item := range items { |
| fmt.Println(item) |
| } |
| } |
| |
| type Response struct { |
| Data struct { |
| Children []struct { |
| Data Item |
| } |
| } |
| } |
| |
| type Item struct { |
| Title string |
| URL string |
| Comments int `json:"num_comments"` |
| } |
| |
| func (i Item) String() string { |
| com := "" |
| switch i.Comments { |
| case 0: |
| // nothing |
| case 1: |
| com = " (1 comment)" |
| default: |
| com = fmt.Sprintf(" (%d comments)", i.Comments) |
| } |
| return fmt.Sprintf("%s%s\n%s", i.Title, com, i.URL) |
| } |
| |
| func Get(reddit string) ([]Item, error) { |
| url := fmt.Sprintf("http://reddit.com/r/%s.json", reddit) |
| resp, err := http.Get(url) |
| if err != nil { |
| return nil, err |
| } |
| defer resp.Body.Close() |
| if resp.StatusCode != http.StatusOK { |
| return nil, errors.New(resp.Status) |
| } |
| r := new(Response) |
| err = json.NewDecoder(resp.Body).Decode(r) |
| if err != nil { |
| return nil, err |
| } |
| items := make([]Item, len(r.Data.Children)) |
| for i, child := range r.Data.Children { |
| items[i] = child.Data |
| } |
| return items, nil |
| } |