77 lines
3.8 KiB
JavaScript
77 lines
3.8 KiB
JavaScript
var _fs;
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function set_fs(fs) { _fs = fs; }
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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, document, File, chrome */
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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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if(typeof Deno !== 'undefined') {
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/* in this spot, it's safe to assume typed arrays and TextEncoder/TextDecoder exist */
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if(enc && typeof payload == "string") switch(enc) {
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case "utf8": payload = new TextEncoder(enc).encode(payload); break;
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case "binary": payload = s2ab(payload); break;
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/* TODO: binary equivalent */
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default: throw new Error("Unsupported encoding " + enc);
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}
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return Deno.writeFileSync(fname, payload);
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}
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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 url = URL.createObjectURL(blob);
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/*:: declare var chrome: any; */
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if(typeof chrome === 'object' && typeof (chrome.downloads||{}).download == "function") {
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if(URL.revokeObjectURL && typeof setTimeout !== 'undefined') setTimeout(function() { URL.revokeObjectURL(url); }, 60000);
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return chrome.downloads.download({ url: url, filename: fname, saveAs: true });
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}
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var a = document.createElement("a");
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if(a.download != null) {
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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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} else if(typeof URL !== 'undefined' && !URL.createObjectURL && typeof chrome === 'object') {
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/* manifest v3 extensions -- no URL.createObjectURL */
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var b64 = "data:application/octet-stream;base64," + Base64_encode_arr(new Uint8Array(blobify(data)));
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return chrome.downloads.download({ url: b64, filename: fname, saveAs: true });
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}
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}
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// $FlowIgnore
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if(typeof $ !== 'undefined' && typeof File !== 'undefined' && typeof Folder !== 'undefined') try { // extendscript
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// $FlowIgnore
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var out = File(fname); out.open("w"); out.encoding = "binary";
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if(Array.isArray(payload)) payload = a2s(payload);
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out.write(payload); out.close(); return payload;
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} catch(e) { if(!e.message || e.message.indexOf("onstruct") == -1) throw e; }
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throw new Error("cannot save file " + fname);
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}
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/* read binary data from file */
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function read_binary(path/*:string*/) {
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if(typeof _fs !== 'undefined') return _fs.readFileSync(path);
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if(typeof Deno !== 'undefined') return Deno.readFileSync(path);
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// $FlowIgnore
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if(typeof $ !== 'undefined' && typeof File !== 'undefined' && typeof Folder !== 'undefined') try { // extendscript
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// $FlowIgnore
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var infile = File(path); infile.open("r"); infile.encoding = "binary";
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var data = infile.read(); infile.close();
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return data;
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} catch(e) { if(!e.message || e.message.indexOf("onstruct") == -1) throw e; }
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throw new Error("Cannot access file " + path);
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}
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