38 lines
1.7 KiB
JavaScript
38 lines
1.7 KiB
JavaScript
var _fs;
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if(typeof require !== 'undefined') try { _fs = require('fs'); } catch(e) {}
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/* normalize data for blob ctor */
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function blobify(data) {
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if(typeof data === "string") return s2ab(data);
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if(Array.isArray(data)) return a2u(data);
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return data;
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}
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/* write or download file */
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function write_dl(fname/*:string*/, payload/*:any*/, enc/*:?string*/) {
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/*global IE_SaveFile, Blob, navigator, saveAs, URL, document */
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if(typeof _fs !== 'undefined' && _fs.writeFileSync) return enc ? _fs.writeFileSync(fname, payload, enc) : _fs.writeFileSync(fname, payload);
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var data = (enc == "utf8") ? utf8write(payload) : payload;
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/*:: declare var IE_SaveFile: any; */
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if(typeof IE_SaveFile !== 'undefined') return IE_SaveFile(data, fname);
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if(typeof Blob !== 'undefined') {
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var blob = new Blob([blobify(data)], {type:"application/octet-stream"});
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/*:: declare var navigator: any; */
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if(typeof navigator !== 'undefined' && navigator.msSaveBlob) return navigator.msSaveBlob(blob, fname);
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/*:: declare var saveAs: any; */
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if(typeof saveAs !== 'undefined') return saveAs(blob, fname);
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if(typeof URL !== 'undefined' && typeof document !== 'undefined' && document.createElement && URL.createObjectURL) {
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var a = document.createElement("a");
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if(a.download != null) {
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var url = URL.createObjectURL(blob);
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/*:: if(document.body == null) throw new Error("unreachable"); */
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a.download = fname; a.href = url; document.body.appendChild(a); a.click();
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/*:: if(document.body == null) throw new Error("unreachable"); */ document.body.removeChild(a);
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if(URL.revokeObjectURL && typeof setTimeout !== 'undefined') setTimeout(function() { URL.revokeObjectURL(url); }, 60000);
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return url;
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}
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}
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}
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throw new Error("cannot initiate download");
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}
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