38 lines
1.6 KiB
Swift
38 lines
1.6 KiB
Swift
/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */
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/* This only works in a playground, see SheetJSCore.swift for standalone use */
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import JavaScriptCore;
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import PlaygroundSupport;
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/* build path variable for the library */
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let shared_dir = PlaygroundSupport.playgroundSharedDataDirectory;
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let lib_path = shared_dir.appendingPathComponent("xlsx.full.min.js");
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/* prepare JS context */
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var context: JSContext! = JSContext();
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var src = "var global = (function(){ return this; }).call(null);";
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context.evaluateScript(src);
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/* load library */
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var lib = try? String(contentsOf: lib_path);
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context.evaluateScript(lib);
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let XLSX: JSValue! = context.objectForKeyedSubscript("XLSX");
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/* to verify the library was loaded, get the version string */
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let XLSXversion: JSValue! = XLSX.objectForKeyedSubscript("version")
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var version = XLSXversion.toString();
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/* parse sheetjs.xls */
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let file_path = shared_dir.appendingPathComponent("sheetjs.xls");
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let data: String! = try String(contentsOf: file_path, encoding: String.Encoding.isoLatin1);
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context.setObject(data, forKeyedSubscript: "payload" as (NSCopying & NSObjectProtocol)!);
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src = "var wb = XLSX.read(payload, {type:'binary'});";
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context.evaluateScript(src);
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/* write to sheetjsw.xlsx */
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let out_path = shared_dir.appendingPathComponent("sheetjsw.xlsx");
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src = "var out = XLSX.write(wb, {type:'binary', bookType:'xlsx'})";
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context.evaluateScript(src);
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let outvalue: JSValue! = context.objectForKeyedSubscript("out");
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var out: String! = outvalue.toString();
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try? out.write(to: out_path, atomically: false, encoding: String.Encoding.isoLatin1);
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