79 lines
2.8 KiB
JavaScript
79 lines
2.8 KiB
JavaScript
function rtf_to_workbook(d/*:RawData*/, opts)/*:Workbook*/ {
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switch(opts.type) {
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case 'base64': return rtf_to_book_str(Base64_decode(d), opts);
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case 'binary': return rtf_to_book_str(d, opts);
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case 'buffer': return rtf_to_book_str(has_buf && Buffer.isBuffer(d) ? d.toString('binary') : a2s(d), opts);
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case 'array': return rtf_to_book_str(cc2str(d), opts);
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}
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throw new Error("Unrecognized type " + opts.type);
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}
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/* TODO: RTF technically can store multiple tables, even if Excel does not */
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function rtf_to_book_str(str/*:string*/, opts)/*:Workbook*/ {
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var o = opts || {};
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var sname = o.sheet || "Sheet1";
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var ws/*:Worksheet*/ = o.dense ? ([]/*:any*/) : ({}/*:any*/);
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var wb/*:Workbook*/ = { SheetNames: [ sname ], Sheets: {} };
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wb.Sheets[sname] = ws;
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var rows = str.match(/\\trowd[\s\S]*?\\row\b/g);
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if(!rows.length) throw new Error("RTF missing table");
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var range/*:Range*/ = ({s: {c:0, r:0}, e: {c:0, r:rows.length - 1}}/*:any*/);
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rows.forEach(function(rowtf, R) {
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if(Array.isArray(ws)) ws[R] = [];
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var rtfre = /\\[\w\-]+\b/g;
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var last_index = 0;
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var res;
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var C = -1;
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var payload = [];
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while((res = rtfre.exec(rowtf))) {
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var data = rowtf.slice(last_index, rtfre.lastIndex - res[0].length);
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if(data.charCodeAt(0) == 0x20) data = data.slice(1);
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if(data.length) payload.push(data);
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switch(res[0]) {
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case "\\cell":
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++C;
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if(payload.length) {
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// TODO: value parsing, including codepage adjustments
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var cell = {v: payload.join(""), t:"s"};
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if(cell.v == "TRUE" || cell.v == "FALSE") { cell.v = cell.v == "TRUE"; cell.t = "b"; }
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else if(!isNaN(fuzzynum(cell.v))) { cell.t = 'n'; if(o.cellText !== false) cell.w = cell.v; cell.v = fuzzynum(cell.v); }
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if(Array.isArray(ws)) ws[R][C] = cell;
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else ws[encode_cell({r:R, c:C})] = cell;
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}
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payload = [];
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break;
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case "\\par": // NOTE: Excel serializes both "\r" and "\n" as "\\par"
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payload.push("\n");
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break;
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}
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last_index = rtfre.lastIndex;
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}
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if(C > range.e.c) range.e.c = C;
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});
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ws['!ref'] = encode_range(range);
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return wb;
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}
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/* TODO: standardize sheet names as titles for tables */
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function sheet_to_rtf(ws/*:Worksheet*//*::, opts*/)/*:string*/ {
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var o = ["{\\rtf1\\ansi"];
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var r = safe_decode_range(ws['!ref']), cell/*:Cell*/;
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var dense = Array.isArray(ws);
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for(var R = r.s.r; R <= r.e.r; ++R) {
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o.push("\\trowd\\trautofit1");
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for(var C = r.s.c; C <= r.e.c; ++C) o.push("\\cellx" + (C+1));
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o.push("\\pard\\intbl");
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for(C = r.s.c; C <= r.e.c; ++C) {
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var coord = encode_cell({r:R,c:C});
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cell = dense ? (ws[R]||[])[C]: ws[coord];
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if(!cell || cell.v == null && (!cell.f || cell.F)) continue;
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o.push(" " + (cell.w || (format_cell(cell), cell.w)).replace(/[\r\n]/g, "\\par "));
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o.push("\\cell");
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}
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o.push("\\pard\\intbl\\row");
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}
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return o.join("") + "}";
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}
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