version bump 0.16.5: sheet_add_dom (fixes SheetJS#2073)

README.md

@@ -2117,6 +2117,56 @@ var wb = XLSX.utils.table_to_book(tbl);
 
 Note: `XLSX.read` can handle HTML represented as strings.
 
+
+`XLSX.utils.sheet_add_dom` takes a table DOM element and updates an existing
+worksheet object.  It follows the same process as `table_to_sheet` and accepts
+an options argument:
+
+| Option Name |  Default | Description                                         |
+| :---------- | :------: | :-------------------------------------------------- |
+|`raw`        |          | If true, every cell will hold raw strings           |
+|`dateNF`     |  FMT 14  | Use specified date format in string output          |
+|`cellDates`  |  false   | Store dates as type `d` (default is `n`)            |
+|`sheetRows`  |    0     | If >0, read the first `sheetRows` rows of the table |
+|`display`    |  false   | If true, hidden rows and cells will not be parsed   |
+
+`origin` is expected to be one of:
+
+| `origin`         | Description                                               |
+| :--------------- | :-------------------------------------------------------- |
+| (cell object)    | Use specified cell (cell object)                          |
+| (string)         | Use specified cell (A1-style cell)                        |
+| (number >= 0)    | Start from the first column at specified row (0-indexed)  |
+| -1               | Append to bottom of worksheet starting on first column    |
+| (default)        | Start from cell A1                                        |
+
+
+<details>
+  <summary><b>Examples</b> (click to show)</summary>
+
+A small helper function can create gap rows between tables:
+
+```js
+function create_gap_rows(ws, nrows) {
+  var ref = XLSX.utils.decode_range(ws["!ref"]);       // get original range
+  ref.e.r += nrows;                                    // add to ending row
+  ws["!ref"] = XLSX.utils.encode_range(ref);           // reassign row
+}
+
+/* first table */
+var ws = XLSX.utils.table_to_sheet(document.getElementById('table1'));
+create_gap_rows(ws, 1); // one row gap after first table
+
+/* second table */
+XLSX.utils.sheet_add_dom(ws, document.getElementById('table2'), {origin: -1});
+create_gap_rows(ws, 3); // three rows gap after second table
+
+/* third table */
+XLSX.utils.sheet_add_dom(ws, document.getElementById('table3'), {origin: -1});
+```
+
+</details>
+
 ### Formulae Output
 
 `XLSX.utils.sheet_to_formulae` generates an array of commands that represent

bits/01_version.js

@@ -1 +1 @@
-XLSX.version = '0.16.4';
+XLSX.version = '0.16.5';

bits/27_csfutils.js

@@ -26,7 +26,11 @@ function encode_cell(cell/*:CellAddress*/)/*:string*/ {
 	for(; col; col=((col-1)/26)|0) s = String.fromCharCode(((col-1)%26) + 65) + s;
 	return s + (cell.r + 1);
 }
-function decode_range(range/*:string*/)/*:Range*/ { var x =range.split(":"); return {s:decode_cell(x[0]),e:decode_cell(x[x.length-1])}; }
+function decode_range(range/*:string*/)/*:Range*/ {
+	var idx = range.indexOf(":");
+	if(idx == -1) return { s: decode_cell(range), e: decode_cell(range) };
+	return { s: decode_cell(range.slice(0, idx)), e: decode_cell(range.slice(idx + 1)) };
+}
 /*# if only one arg, it is assumed to be a Range.  If 2 args, both are cell addresses */
 function encode_range(cs/*:CellAddrSpec|Range*/,ce/*:?CellAddrSpec*/)/*:string*/ {
 	if(typeof ce === 'undefined' || typeof ce === 'number') {
@@ -105,6 +109,7 @@ function sheet_add_aoa(_ws/*:?Worksheet*/, data/*:AOA*/, opts/*:?any*/)/*:Worksh
 			var _origin/*:CellAddress*/ = typeof o.origin == "string" ? decode_cell(o.origin) : o.origin;
 			_R = _origin.r; _C = _origin.c;
 		}
+		if(!ws["!ref"]) ws["!ref"] = "A1:A1";
 	}
 	var range/*:Range*/ = ({s: {c:10000000, r:10000000}, e: {c:0, r:0}}/*:any*/);
 	if(ws['!ref']) {

bits/62_fxls.js

@@ -690,7 +690,7 @@ var PtgBinOp = {
 };
 
 // List of invalid characters needs to be tested further
-var quoteCharacters /*:RegExp */ = new RegExp(/[^\w\u4E00-\u9FFF\u3040-\u30FF]/)
+var quoteCharacters /*:RegExp */ = new RegExp(/[^\w\u4E00-\u9FFF\u3040-\u30FF]/);
 function formula_quote_sheet_name(sname/*:string*/, opts)/*:string*/ {
 	if(!sname && !(opts && opts.biff <= 5 && opts.biff >= 2)) throw new Error("empty sheet name");
 	if (quoteCharacters.test(sname)) return "'" + sname + "'";

bits/79_html.js

@@ -119,16 +119,32 @@ var HTML_ = (function() {
 	};
 })();
 
-function parse_dom_table(table/*:HTMLElement*/, _opts/*:?any*/)/*:Worksheet*/ {
+function sheet_add_dom(ws/*:Worksheet*/, table/*:HTMLElement*/, _opts/*:?any*/)/*:Worksheet*/ {
 	var opts = _opts || {};
 	if(DENSE != null) opts.dense = DENSE;
-	var ws/*:Worksheet*/ = opts.dense ? ([]/*:any*/) : ({}/*:any*/);
+	var or_R = 0, or_C = 0;
+	if(opts.origin != null) {
+		if(typeof opts.origin == 'number') or_R = opts.origin;
+		else {
+			var _origin/*:CellAddress*/ = typeof opts.origin == "string" ? decode_cell(opts.origin) : opts.origin;
+			or_R = _origin.r; or_C = _origin.c;
+		}
+	}
 	var rows/*:HTMLCollection<HTMLTableRowElement>*/ = table.getElementsByTagName('tr');
-	var sheetRows = opts.sheetRows || 10000000;
-	var range/*:Range*/ = {s:{r:0,c:0},e:{r:0,c:0}};
+	var sheetRows = Math.min(opts.sheetRows||10000000, rows.length);
+	var range/*:Range*/ = {s:{r:0,c:0},e:{r:or_R,c:or_C}};
+	if(ws["!ref"]) {
+		var _range/*:Range*/ = decode_range(ws["!ref"]);
+		range.s.r = Math.min(range.s.r, _range.s.r);
+		range.s.c = Math.min(range.s.c, _range.s.c);
+		range.e.r = Math.max(range.e.r, _range.e.r);
+		range.e.c = Math.max(range.e.c, _range.e.c);
+		if(or_R == -1) range.e.r = or_R = _range.e.r + 1;
+	}
 	var merges/*:Array<Range>*/ = [], midx = 0;
-	var rowinfo/*:Array<RowInfo>*/ = [];
+	var rowinfo/*:Array<RowInfo>*/ = ws["!rows"] || (ws["!rows"] = []);
 	var _R = 0, R = 0, _C = 0, C = 0, RS = 0, CS = 0;
+	if(!ws["!cols"]) ws['!cols'] = [];
 	for(; _R < rows.length && R < sheetRows; ++_R) {
 		var row/*:HTMLTableRowElement*/ = rows[_R];
 		if (is_dom_element_hidden(row)) {
@@ -143,11 +159,11 @@ function parse_dom_table(table/*:HTMLElement*/, _opts/*:?any*/)/*:Worksheet*/ {
 			var z/*:?string*/ = elt.getAttribute('z');
 			for(midx = 0; midx < merges.length; ++midx) {
 				var m/*:Range*/ = merges[midx];
-				if(m.s.c == C && m.s.r <= R && R <= m.e.r) { C = m.e.c+1; midx = -1; }
+				if(m.s.c == C + or_C && m.s.r < R + or_R && R + or_R <= m.e.r) { C = m.e.c+1 - or_C; midx = -1; }
 			}
 			/* TODO: figure out how to extract nonstandard mso- style */
 			CS = +elt.getAttribute("colspan") || 1;
-			if((RS = +elt.getAttribute("rowspan"))>0 || CS>1) merges.push({s:{r:R,c:C},e:{r:R + (RS||1) - 1, c:C + CS - 1}});
+			if( ((RS = (+elt.getAttribute("rowspan") || 1)))>1 || CS>1) merges.push({s:{r:R + or_R,c:C + or_C},e:{r:R + or_R + (RS||1) - 1, c:C + or_C + (CS||1) - 1}});
 			var o/*:Cell*/ = {t:'s', v:v};
 			var _t/*:string*/ = elt.getAttribute("t") || "";
 			if(v != null) {
@@ -163,21 +179,26 @@ function parse_dom_table(table/*:HTMLElement*/, _opts/*:?any*/)/*:Worksheet*/ {
 				}
 			}
 			if(o.z === undefined && z != null) o.z = z;
-			if(opts.dense) { if(!ws[R]) ws[R] = []; ws[R][C] = o;}
-			else ws[encode_cell({c:C, r:R})] = o;
-			if(range.e.c < C) range.e.c = C;
+			if(opts.dense) { if(!ws[R + or_R]) ws[R + or_R] = []; ws[R + or_R][C + or_C] = o; }
+			else ws[encode_cell({c:C + or_C, r:R + or_R})] = o;
+			if(range.e.c < C + or_C) range.e.c = C + or_C;
 			C += CS;
 		}
 		++R;
 	}
-	if(merges.length) ws['!merges'] = merges;
-	if(rowinfo.length) ws['!rows'] = rowinfo;
-	range.e.r = R - 1;
+	if(merges.length) ws['!merges'] = (ws["!merges"] || []).concat(merges);
+	range.e.r = Math.max(range.e.r, R - 1 + or_R);
 	ws['!ref'] = encode_range(range);
-	if(R >= sheetRows) ws['!fullref'] = encode_range((range.e.r = rows.length-_R+R-1,range)); // We can count the real number of rows to parse but we don't to improve the performance
+	if(R >= sheetRows) ws['!fullref'] = encode_range((range.e.r = rows.length-_R+R-1 + or_R,range)); // We can count the real number of rows to parse but we don't to improve the performance
 	return ws;
 }
 
+function parse_dom_table(table/*:HTMLElement*/, _opts/*:?any*/)/*:Worksheet*/ {
+	var opts = _opts || {};
+	var ws/*:Worksheet*/ = opts.dense ? ([]/*:any*/) : ({}/*:any*/);
+	return sheet_add_dom(ws, table, _opts);
+}
+
 function table_to_book(table/*:HTMLElement*/, opts/*:?any*/)/*:Workbook*/ {
 	return sheet_to_workbook(parse_dom_table(table, opts), opts);
 }

bits/90_utils.js

@@ -179,6 +179,7 @@ function sheet_to_formulae(sheet/*:Worksheet*/)/*:Array<string>*/ {
 }
 
 function sheet_add_json(_ws/*:?Worksheet*/, js/*:Array<any>*/, opts)/*:Worksheet*/ {
+	if(!js.length) return _ws;
 	var o = opts || {};
 	var offset = +!o.skipHeader;
 	var ws/*:Worksheet*/ = _ws || ({}/*:any*/);
@@ -197,6 +198,8 @@ function sheet_add_json(_ws/*:?Worksheet*/, js/*:Array<any>*/, opts)/*:Worksheet
 		range.e.c = Math.max(range.e.c, _range.e.c);
 		range.e.r = Math.max(range.e.r, _range.e.r);
 		if(_R == -1) { _R = _range.e.r + 1; range.e.r = _R + js.length - 1 + offset; }
+	} else {
+		if(_R == -1) { _R = 0; range.e.r = js.length - 1 + offset; }
 	}
 	var hdr/*:Array<string>*/ = o.header || [], C = 0;
 
@@ -254,6 +257,7 @@ var utils/*:any*/ = {
 	make_formulae: sheet_to_formulae,
 	sheet_add_aoa: sheet_add_aoa,
 	sheet_add_json: sheet_add_json,
+	sheet_add_dom: sheet_add_dom,
 	aoa_to_sheet: aoa_to_sheet,
 	json_to_sheet: json_to_sheet,
 	table_to_sheet: parse_dom_table,