Function downloadOne

Picviewer CE+/dist.user.js:16329–16376

(imgSrc, imgName, over)

                    }
                    var len = saveParams.length;
                    function downloadOne(imgSrc, imgName, over){
                        let crosHandler = imgSrc => {
                            urlToBlob(imgSrc, (blob, ext)=>{
                                if (blob && blob.size>58) {
                                    let fileName = imgName.replace(/\//g, "");
                                    if (ext) fileName = fileName.replace(/\.\w+$/, "") + "." + ext;
                                    zip.file(fileName, blob);
                                } else console.debug("error: "+imgSrc);
                                downloaded++;
                                over && over();
                                self.showTips("Downloading "+downloaded+"/"+len, 1000000);
                                if(downloaded == len){
                                    self.showTips(`Begin compress to ${packName}...`, 100000);
                                    zip.generateAsync({type:"blob"}, meta=>{self.showCompressProgress(meta)}).then(function(content){
                                        if (content) {
                                            saveAs(content, packName);
                                        }
                                        callback();
                                    })
                                }
                            });
                        }
                        if(canvas && (/^data:/.test(imgSrc) || imgSrc.split("/")[2] == document.domain)){
                            urlToBlobWithFetch(imgSrc, (blob, ext)=>{
                                if(!blob){
                                    crosHandler(imgSrc);
                                    return;
                                }
                                self.showTips("Downloading "+(downloaded+1)+"/"+len, 1000000);
                                let fileName = imgName.replace(/^data:.*/, "img").replace(/\//g,"");
                                if (ext) fileName = fileName.replace(/\.\w+$/, "") + "." + ext;
                                zip.file(fileName, blob);
                                downloaded++;
                                over && over();
                                if(downloaded == len){
                                    self.showTips(`Begin compress to ${packName}...`, 100000);
                                    zip.generateAsync({type:"blob"}, meta=>{self.showCompressProgress(meta)}).then(function(content){
                                        if (content) {
                                            saveAs(content, packName);
                                        }
                                        callback();
                                    })
                                }
                            });
                        }else{
                            crosHandler(imgSrc);
                        }
                    }
                    if(prefs.gallery.downloadGap > 0){
                        let waitToDownloadOne = () => {
                            setTimeout(() => {