forked from sheetjs/sheetjs
103 lines
3.8 KiB
TypeScript
103 lines
3.8 KiB
TypeScript
import { WorkBook, WorkSheet, Range, CellObject, DenseSheet, SparseSheet, ParsingOptions, WritingOptions } from '../';
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import type { utils } from "../";
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type RawData = any;
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declare var encode_cell: typeof utils.encode_cell;
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declare var encode_range: typeof utils.encode_range;
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declare var format_cell: typeof utils.format_cell;
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declare var safe_decode_range: typeof utils.decode_range;
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declare function sheet_to_workbook(s: WorkSheet, o?: any): WorkBook;
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declare function cc2str(d: any): string;
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declare function a2s(a: any): string;
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declare var has_buf: boolean;
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declare function Base64_decode(s: string): string;
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declare function fuzzynum(s: string): number;
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function rtf_to_sheet(d: RawData, opts: ParsingOptions): WorkSheet {
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switch(opts.type) {
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case 'base64': return rtf_to_sheet_str(Base64_decode(d), opts);
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case 'binary': return rtf_to_sheet_str(d, opts);
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case 'buffer': return rtf_to_sheet_str(has_buf && Buffer.isBuffer(d) ? d.toString('binary') : a2s(d), opts);
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case 'array': return rtf_to_sheet_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: this is a stub */
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function rtf_to_sheet_str(str: string, opts: ParsingOptions): WorkSheet {
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var o = opts || {};
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// ESBuild issue 2375
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var ws: WorkSheet = {} as WorkSheet;
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var dense = o.dense;
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if(dense) ws["!data"] = [];
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var rows = str_match_ng(str, "\\trowd", "\\row");
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if(!rows) 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}};
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var row: CellObject[] = [];
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rows.forEach(function(rowtf, R) {
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if(dense) row = (ws as DenseSheet)["!data"][R] = [] as CellObject[];
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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: string[] = [];
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while((res = rtfre.exec(rowtf)) != null) {
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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: CellObject = {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 as string))) { cell.t = 'n'; if(o.cellText !== false) cell.w = cell.v as string; cell.v = fuzzynum(cell.v as string); }
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if(dense) row[C] = cell;
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else (ws as SparseSheet)[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 ws;
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}
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function rtf_to_workbook(d: RawData, opts: ParsingOptions): WorkBook {
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var wb: WorkBook = sheet_to_workbook(rtf_to_sheet(d, opts), opts);
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wb.bookType = "rtf";
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return wb;
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}
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/* TODO: this is a stub */
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function sheet_to_rtf(ws: WorkSheet, opts: WritingOptions): string {
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var o: string[] = ["{\\rtf1\\ansi"];
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if(!ws["!ref"]) return o[0] + "}";
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var r = safe_decode_range(ws['!ref']), cell: CellObject;
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var dense = ws["!data"] != null, row: CellObject[] = [];
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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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if(dense) row = (ws as DenseSheet)["!data"][R] || ([] as CellObject[])
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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 ? row[C] : (ws as SparseSheet)[coord];
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if(!cell || cell.v == null && (!cell.f || cell.F)) { o.push(" \\cell"); 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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