Compact word wrap (partial)

Author: speedytwenty

src/cell.js

@@ -67,7 +67,7 @@ class Cell {
           i++;
         }
       }
-      this.lines = utils.colorizeLines(utils.wordWrap(fixedWidth, this.content));
+      this.lines = utils.colorizeLines(utils.wordWrap(fixedWidth, this.content, tableOptions.wrapWords));
     } else {
       this.lines = utils.colorizeLines(this.content.split('\n'));
     }

src/utils.js

@@ -271,11 +271,31 @@ function wordWrap(maxLength, input) {
   return lines;
 }
 
-function multiLineWordWrap(maxLength, input) {
+function wrapWords(maxLength, input) {
+  let lines = [];
+  let line = '';
+  function pushLine(str, ws) {
+    if (line.length && ws) line += ws;
+    line += str;
+    while (line.length > maxLength) {
+      lines.push(line.slice(0, maxLength));
+      line = line.slice(maxLength);
+    }
+  }
+  let split = input.split(/(\s+)/g);
+  for (let i = 0; i < split.length; i += 2) {
+    pushLine(split[i], i && split[i - 1]);
+  }
+  if (line.length) lines.push(line);
+  return lines;
+}
+
+function multiLineWordWrap(maxLength, input, words = false) {
   let output = [];
   input = input.split('\n');
+  const handler = words ? wrapWords : wordWrap;
   for (let i = 0; i < input.length; i++) {
-    output.push.apply(output, wordWrap(maxLength, input[i]));
+    output.push.apply(output, handler(maxLength, input[i]));
   }
   return output;
 }

test/utils-test.js

@@ -322,6 +322,18 @@ describe('utils', function () {
       let expected = ['\x1b[31m漢字\x1b[0m', ' 漢字'];
       expect(wordWrap(5, input)).toEqual(expected);
     });
+
+    describe('wrapWords', function () {
+      it('wraps long words', function () {
+        expect(wordWrap(10, 'abcdefghijklmnopqrstuvwxyz', true)).toEqual(['abcdefghij', 'klmnopqrst', 'uvwxyz']);
+        expect(wordWrap(10, 'abcdefghijk lmnopqrstuv wxyz', true)).toEqual(['abcdefghij', 'k lmnopqrs', 'tuv wxyz']);
+        expect(wordWrap(10, 'ab cdefghijk lmnopqrstuv wx yz', true)).toEqual([
+          'ab cdefghi',
+          'jk lmnopqr',
+          'stuv wx yz',
+        ]);
+      });
+    });
   });
 
   describe('colorizeLines', function () {