Fetching tags by filename

main.go

@@ -4,6 +4,8 @@ import (
 	"flag"
 	"fmt"
 	"log"
+	"path"
+	"syscall"
 
 	"./pixiv"
 )
@@ -64,6 +66,13 @@ func main() {
 			log.Fatal(err.Error())
 		}
 	}
+
+	if len(cmdline.setTagsFile) > 0 {
+		err := setTagsFile(cmdline.setTagsFile)
+		if err != nil {
+			fmt.Printf("%s\n", err.Error())
+		}
+	}
 }
 
 func fetchFollows(userID string) (err error) {
@@ -111,6 +120,20 @@ func fetchBookmarks(userID string) (err error) {
 	return
 }
 
+func setTagsFile(filename string) (err error) {
+	if ok, id := pix.TypicalFilenamesMatcher(path.Base(filename)); ok {
+		illust, err := pix.GetIllust(id)
+		if err != nil {
+			return err
+		}
+		err = syscall.Setxattr(filename, "user.xdg.tags", []byte(illust.TagsString()), 0)
+		if err != nil {
+			return err
+		}
+	}
+	return
+}
+
 func fetchIllusts(userID string) (err error) {
 	illusts, err := pix.GetUserIllustsID(userID)
 	if err != nil {
@@ -140,6 +163,13 @@ func fetchIllusts(userID string) (err error) {
 			pix.DownloadChannel <- illust
 		}
 	}
+
+	if len(cmdline.setTagsFile) > 0 {
+		err = setTagsFile(cmdline.setTagsFile)
+		if err != nil {
+			fmt.Printf("Request error or ID not recognized: %s\n", err.Error())
+		}
+	}
 	return
 }
 
@@ -157,7 +187,7 @@ func flags() {
 	flag.BoolVar(&cmdline.test, "test", false, "test")
 	flag.StringVar(&cmdline.logErrorsFile, "log-errors", "", "file to strore failed items")
 	flag.IntVar(&cmdline.threads, "threads", 1, "threads number")
-	flag.StringVar(&cmdline.setTagsFile, "set-xattr-file", "", "[WIP] fetch illustration's tags and write them to xattrs of the specified file. Filename SHOULD be in following formats: <illust_id>_p<page_number>.<file_ext>, illust_<illust_id>_*")
+	flag.StringVar(&cmdline.setTagsFile, "set-xattr-file", "", "fetch illustration's tags and write them to xattrs of the specified file.")
 	flag.BoolVar(&cmdline.setXAttrTags, "set-xattr", false, "also write tags to xattrs")
 	flag.StringVar(&cmdline.testString, "test-string", "", "used for testing purposes")
 	flag.Parse()