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d._promise?d._promise.always(d.__tick):void(d.pool.length<e.threads&&(c=d._nextBlock())?(d._trigged=!1,b=function(b){d._promise=null,b&&b.file&&d._startSend(b),a.nextTick(d.__tick)},d._promise=g(c)?c.always(b):b(c)):d.remaning||d._getStats().numOfQueue||d._getStats().numofInterrupt||(d.runing=!1,d._trigged||a.nextTick(function(){d.owner.trigger("uploadFinished")}),d._trigged=!0))},_putback:function(a){var b;a.cuted.unshift(a),b=this.stack.indexOf(a.cuted),~b||this.stack.unshift(a.cuted)},_getStack:function(){for(var a,b=0;a=this.stack[b++];){if(a.has()&&a.file.getStatus()===h.PROGRESS)return a;(!a.has()||a.file.getStatus()!==h.PROGRESS&&a.file.getStatus()!==h.INTERRUPT)&&this.stack.splice(--b,1)}return null},_nextBlock:function(){var a,b,c,d,f=this,h=f.options;return(a=this._getStack())?(h.prepareNextFile&&!f.pending.length&&f._prepareNextFile(),a.shift()):f.runing?(!f.pending.length&&f._getStats().numOfQueue&&f._prepareNextFile(),b=f.pending.shift(),c=function(b){return 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e.getStatus()!==h.PROGRESS?void(e.getStatus()===h.INTERRUPT&&d._putback(b)):(d.pool.push(b),d.remaning++,b.blob=1===b.chunks?e.source:e.source.slice(b.start,b.end),c=d.request("before-send",b,function(){e.getStatus()===h.PROGRESS?d._doSend(b):(d._popBlock(b),a.nextTick(d.__tick))}),void c.fail(function(){1===e.remaning?d._finishFile(e).always(function(){b.percentage=1,d._popBlock(b),d.owner.trigger("uploadComplete",e),a.nextTick(d.__tick)}):(b.percentage=1,d.updateFileProgress(e),d._popBlock(b),a.nextTick(d.__tick))}))},_doSend:function(b){var c,e,g=this,i=g.owner,j=g.options,k=b.file,l=new d(j),m=f.extend({},j.formData),n=f.extend({},j.headers);b.transport=l,l.on("destroy",function(){delete b.transport,g._popBlock(b),a.nextTick(g.__tick)}),l.on("progress",function(a){b.percentage=a,g.updateFileProgress(k)}),c=function(a){var c;return 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d.request("after-send-file",arguments,function(){a.setStatus(h.COMPLETE),d.trigger("uploadSuccess",a,b,c)}).fail(function(b){a.getStatus()===h.PROGRESS&&a.setStatus(h.ERROR,b),d.trigger("uploadError",a,b)
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