adds support for twitter param link parsing

fixes #135

extract.go

@@ -18,6 +18,14 @@ func getDownloadLinks(inputURL string, channelID string, interactive bool) (map[
 			return skipDuplicateLinks(links, channelID, interactive), true
 		}
 	}
+	if RegexpUrlTwitterParams.MatchString(inputURL) {
+		links, err := getTwitterParamsUrls(inputURL)
+		if err != nil {
+			fmt.Println("twitter params URL failed,", inputURL, ",", err)
+		} else if len(links) > 0 {
+			return skipDuplicateLinks(links, channelID, interactive), true
+		}
+	}
 	if RegexpUrlTwitterStatus.MatchString(inputURL) {
 		links, err := getTwitterStatusUrls(inputURL, channelID)
 		if err != nil {

main.go

@@ -365,6 +365,14 @@ func getTwitterUrls(url string) (map[string]string, error) {
 	return map[string]string{"https:" + parts[1] + ":orig": filenameFromUrl(parts[1])}, nil
 }
 
+func getTwitterParamsUrls(url string) (map[string]string, error) {
+	matches := RegexpUrlTwitterParams.FindStringSubmatch(url)
+
+	return map[string]string{
+		"https://pbs.twimg.com/media/" + matches[3] + "." + matches[4] + ":orig": "",
+	}, nil
+}
+
 func getTwitterStatusUrls(url string, channelID string) (map[string]string, error) {
 	if twitterClient == nil {
 		return nil, errors.New("invalid twitter api keys set")

regex.go

@@ -6,6 +6,7 @@ import (
 
 const (
 	REGEXP_URL_TWITTER                 = `^http(s?):\/\/pbs(-[0-9]+)?\.twimg\.com\/media\/[^\./]+\.(jpg|png)((\:[a-z]+)?)$`
+	REGEXP_URL_TWITTER_PARAMS          = `^http(s?):\/\/pbs(-[0-9]+)?\.twimg\.com\/media\/([^\./]+)\?format=(jpg|png)&name=([a-z]+)[a-z=&]*$`
 	REGEXP_URL_TWITTER_STATUS          = `^http(s?):\/\/(www\.)?twitter\.com\/([A-Za-z0-9-_\.]+\/status\/|statuses\/|i\/web\/status\/)([0-9]+)$`
 	REGEXP_URL_TISTORY                 = `^http(s?):\/\/t[0-9]+\.daumcdn\.net\/cfile\/tistory\/([A-Z0-9]+?)(\?original)?$`
 	REGEXP_URL_TISTORY_LEGACY          = `^http(s?):\/\/[a-z0-9]+\.uf\.tistory\.com\/(image|original)\/[A-Z0-9]+$`
@@ -27,6 +28,7 @@ const (
 
 var (
 	RegexpUrlTwitter              *regexp.Regexp
+	RegexpUrlTwitterParams        *regexp.Regexp
 	RegexpUrlTwitterStatus        *regexp.Regexp
 	RegexpUrlTistory              *regexp.Regexp
 	RegexpUrlTistoryLegacy        *regexp.Regexp
@@ -50,6 +52,10 @@ func initRegex() error {
 	if err != nil {
 		return err
 	}
+	RegexpUrlTwitterParams, err = regexp.Compile(REGEXP_URL_TWITTER_PARAMS)
+	if err != nil {
+		return err
+	}
 	RegexpUrlTwitterStatus, err = regexp.Compile(REGEXP_URL_TWITTER_STATUS)
 	if err != nil {
 		return err