feat(colums): support multine cells

columns.js

@@ -1,25 +1,45 @@
 "use strict";
 
-var from              = require("es5-ext/array/from")
+var generate          = require("es5-ext/array/generate")
+  , from              = require("es5-ext/array/from")
   , iterable          = require("es5-ext/iterable/validate-object")
   , isValue           = require("es5-ext/object/is-value")
   , stringifiable     = require("es5-ext/object/validate-stringifiable")
   , repeat            = require("es5-ext/string/#/repeat")
   , getStrippedLength = require("./get-stripped-length");
 
-module.exports = function (rows/*, options*/) {
-	var options = Object(arguments[1]), colsMeta = [], colsOptions = options.columns || [];
-	return (
-		from(iterable(rows), function (row) {
-			return from(iterable(row), function (str, index) {
-				var col = colsMeta[index], strLength;
-				if (!col) col = colsMeta[index] = { width: 0 };
-				str = stringifiable(str);
-				strLength = getStrippedLength(str);
-				if (strLength > col.width) col.width = strLength;
-				return { str: str, length: strLength };
+var push = Array.prototype.push;
+
+module.exports = function (inputRows/*, options*/) {
+	var options = Object(arguments[1])
+	  , colsMeta = []
+	  , colsOptions = options.columns || []
+	  , rows = [];
+
+	from(iterable(inputRows), function (row) {
+		var rowRows = [[]];
+		from(iterable(row), function (cellStr, columnIndex) {
+			var cellRows = stringifiable(cellStr).split("\n");
+			while (cellRows.length > rowRows.length) rowRows.push(generate(columnIndex, ""));
+			cellRows.forEach(function (cellRow, rowRowIndex) {
+				rowRows[rowRowIndex][columnIndex] = cellRow;
 			});
-		})
+		});
+		push.apply(rows, rowRows);
+	});
+
+	return (
+		rows
+			.map(function (row) {
+				return from(iterable(row), function (str, index) {
+					var col = colsMeta[index], strLength;
+					if (!col) col = colsMeta[index] = { width: 0 };
+					str = stringifiable(str);
+					strLength = getStrippedLength(str);
+					if (strLength > col.width) col.width = strLength;
+					return { str: str, length: strLength };
+				});
+			})
 			.map(function (row) {
 				return row
 					.map(function (item, index) {

test/columns.js

@@ -20,5 +20,12 @@ module.exports = function (t, a) {
 
 	a(t([["ID"], [1], [1, 23], [1, 23, 456]]), "ID\n1 \n1  | 23\n1  | 23 | 456\n", "Force columns");
 
+	a(
+		t([["ONE", "TWO", "THREE"], ["ON", "DWA\nTRZY", "DWA\nTRZY\nCZTERY"], ["HOPLA", "B", "C"]]),
+		"ONE   | TWO  | THREE \nON    | DWA  | DWA   \n      | TRZY | TRZY  \n" +
+			"      |      | CZTERY\nHOPLA | B    | C     \n",
+		"Rows"
+	);
+
 	a(t([["ID"], ["", ""], [123, 123]]), "ID \n    |    \n123 | 123\n", "Empty cells");
 };