main.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
package main import ( "encoding/csv" "fmt" "io" "io/ioutil" "log" "net/http" "os" "sort" "strings" "sync" "text/template" "time" "github.com/SlyMarbo/rss" ) type FeedItem struct { FeedTitle string PostTitle string Link string Date time.Time } func rootHandler(w http.ResponseWriter, r *http.Request) { // replace this with hardcoded list from j3s.sh scrapedFeeds, err := makeFeedList(os.Args[1]) if err != nil { fmt.Fprintf(w, "makeList error: %s", err) log.Fatal(err) } feeds := make([]rss.Feed, 0) var feed *rss.Feed fetchFailures := make([]error, 0) var wg sync.WaitGroup var m sync.Mutex wg.Add(len(scrapedFeeds)) for _, f := range scrapedFeeds { go func(f string) { defer wg.Done() feed, err = getFeed(f) if err != nil { // break loop in case of // feed fetching failure log.Print(err) err = fmt.Errorf("%s<br>%s", f, err) m.Lock() defer m.Unlock() fetchFailures = append(fetchFailures, err) return } feeds = append(feeds, *feed) }(f) } wg.Wait() if len(fetchFailures) > 0 { for _, f := range fetchFailures { // put this on the website eventually?? log.Printf("failed to fetch %s", f) } } var feedItems []FeedItem for _, f := range feeds { for _, i := range f.Items { var fi FeedItem fi.FeedTitle = f.Title fi.PostTitle = i.Title fi.Link = i.Link fi.Date = i.Date feedItems = append(feedItems, fi) // fmt.Fprintf(w, "<tr>") // fmt.Fprintf(w, "<td>%s: <a href=\"%s\">%s</a> <small>%s</small></td>", // f.Title, i.Link, i.Title, i.Date) // fmt.Fprintf(w, "</tr>") } } sort.Slice(feedItems, func(i, j int) bool { return feedItems[i].Date.After(feedItems[j].Date) }) // here we goooOooOoOoOooOooOo // ooOooOOoooOOooooOOOOOooooOO const tpl = ` <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>jes's personal feed list</title> </head> <body> <table><tbody> {{range .}} <tr> <td> {{.FeedTitle}}: <a href="{{.Link}}">{{.PostTitle}}</a> <small>{{.Date}}</small> </td> </tr> {{end}} </tbody></table> </body> </html>` t, err := template.New("jrss").Parse(tpl) if err != nil { log.Fatal(err) } err = t.Execute(w, feedItems) if err != nil { log.Print(err) } } func getFeed(url string) (*rss.Feed, error) { feed, err := rss.Fetch(url) if err != nil { return nil, err } return feed, nil } func makeFeedList(url string) ([]string, error) { res, err := http.Get(url) if err != nil { err = fmt.Errorf("makeFeedList http.Get: %w", err) return nil, err } defer res.Body.Close() body, err := ioutil.ReadAll(res.Body) if err != nil { err = fmt.Errorf("makeFeedList failed to read http body: %w", err) return nil, err } r := csv.NewReader(strings.NewReader(string(body))) feeds := make([]string, 0) for { record, err := r.Read() if err == io.EOF { break } if err != nil { err = fmt.Errorf("makeFeedList record parsing error: %w\nvalue: %s", err, record) return nil, err } // [0] == url to a feed (item 0 of the csv) feeds = append(feeds, record[0]) } return feeds, err } func faviconHandler(w http.ResponseWriter, r *http.Request) { http.NotFound(w, r) } func main() { if len(os.Args) == 1 { log.Fatal("Supply your feed list as ARG1.\nExample: go run main.go https://j3s.sh/feeds.txt") } http.HandleFunc("/favicon.ico", faviconHandler) http.HandleFunc("/", rootHandler) log.Fatal(http.ListenAndServe(":8080", nil)) }