97 lines
3.4 KiB
Swift
Executable File
97 lines
3.4 KiB
Swift
Executable File
/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */
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import JavaScriptCore;
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enum SJSError: Error {
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case badJSContext;
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case badJSWorkbook;
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case badJSWorksheet;
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};
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class SJSWorksheet {
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var context: JSContext!;
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var wb: JSValue; var ws: JSValue;
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var idx: Int32;
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func toCSV() throws -> String {
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let XLSX: JSValue! = context.objectForKeyedSubscript("XLSX");
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let utils: JSValue! = XLSX.objectForKeyedSubscript("utils");
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let sheet_to_csv: JSValue! = utils.objectForKeyedSubscript("sheet_to_csv");
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return sheet_to_csv.call(withArguments: [ws]).toString();
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}
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init(ctx: JSContext, workbook: JSValue, worksheet: JSValue, idx: Int32) throws {
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self.context = ctx; self.wb = workbook; self.ws = worksheet; self.idx = idx;
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}
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}
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class SJSWorkbook {
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var context: JSContext!;
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var wb: JSValue; var SheetNames: JSValue; var Sheets: JSValue;
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func getSheetAtIndex(idx: Int32) throws -> SJSWorksheet {
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let SheetName: String = SheetNames.atIndex(Int(idx)).toString();
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let ws: JSValue! = Sheets.objectForKeyedSubscript(SheetName);
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return try SJSWorksheet(ctx: context, workbook: wb, worksheet: ws, idx: idx);
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}
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func writeBStr(bookType: String = "xlsx") throws -> String {
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let XLSX: JSValue! = context.objectForKeyedSubscript("XLSX");
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context.evaluateScript(String(format: "var writeopts = {type:'binary', bookType:'%@'}", bookType));
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let writeopts: JSValue = context.objectForKeyedSubscript("writeopts");
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let writefunc: JSValue = XLSX.objectForKeyedSubscript("write");
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return writefunc.call(withArguments: [wb, writeopts]).toString();
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}
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init(ctx: JSContext, wb: JSValue) throws {
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self.context = ctx;
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self.wb = wb;
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self.SheetNames = wb.objectForKeyedSubscript("SheetNames");
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self.Sheets = wb.objectForKeyedSubscript("Sheets");
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}
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}
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class SheetJSCore {
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var context: JSContext!;
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var XLSX: JSValue!;
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func init_context() throws -> JSContext {
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var context: JSContext!
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do {
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context = JSContext();
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context.exceptionHandler = { _, X in if let e = X { print(e.toString()!); }; };
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context.evaluateScript("var global = (function(){ return this; }).call(null);");
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context.evaluateScript("if(typeof wbs == 'undefined') wbs = [];");
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let src = try String(contentsOfFile: "xlsx.full.min.js");
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context.evaluateScript(src);
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if context != nil { return context!; }
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} catch { print(error.localizedDescription); }
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throw SJSError.badJSContext;
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}
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func version() throws -> String {
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if let version = XLSX.objectForKeyedSubscript("version") { return version.toString(); }
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throw SJSError.badJSContext;
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}
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func readFile(file: String) throws -> SJSWorkbook {
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let data: String! = try String(contentsOfFile: file, encoding: String.Encoding.isoLatin1);
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return try readBStr(data: data);
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}
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func readBStr(data: String) throws -> SJSWorkbook {
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context.setObject(data, forKeyedSubscript: "payload" as (NSCopying & NSObjectProtocol));
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context.evaluateScript("var wb = XLSX.read(payload, {type:'binary'});");
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let wb: JSValue! = context.objectForKeyedSubscript("wb");
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if wb == nil { throw SJSError.badJSWorkbook; }
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return try SJSWorkbook(ctx: context, wb: wb);
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}
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init() throws {
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do {
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self.context = try init_context();
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self.XLSX = self.context.objectForKeyedSubscript("XLSX");
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if self.XLSX == nil { throw SJSError.badJSContext; }
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} catch { print(error.localizedDescription); }
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}
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}
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