Added search support for 'match whole word'

demo/client.ts

@@ -102,7 +102,7 @@ function createTerminal(): void {
       e.preventDefault();
       const searchOptions = {
         regex: (document.getElementById('regex') as HTMLInputElement).checked,
-        wholeWord: false,
+        wholeWord: (document.getElementById('whole-word') as HTMLInputElement).checked,
         caseSensitive: (document.getElementById('case-sensitive') as HTMLInputElement).checked
       };
       term.findNext(actionElements.findNext.value, searchOptions);
@@ -113,7 +113,7 @@ function createTerminal(): void {
       e.preventDefault();
       const searchOptions = {
         regex: (document.getElementById('regex') as HTMLInputElement).checked,
-        wholeWord: false,
+        wholeWord: (document.getElementById('whole-word') as HTMLInputElement).checked,
         caseSensitive: (document.getElementById('case-sensitive') as HTMLInputElement).checked
       };
       term.findPrevious(actionElements.findPrevious.value, searchOptions);

demo/index.html

@@ -18,6 +18,7 @@ <h3>Actions</h3>
         <label>Find previous <input id="find-previous"/></label>
         <label>Use regex<input type="checkbox" id="regex"/></label> 
         <label>Case sensitive<input type="checkbox" id="case-sensitive"/></label>
+        <label>Whole word<input type="checkbox" id="whole-word"/></label>
       </p>
     </div>
     <div>

src/addons/search/SearchHelper.ts

@@ -4,6 +4,7 @@
  */
 
 import { ISearchHelper, ISearchAddonTerminal, ISearchOptions, ISearchResult } from './Interfaces';
+const nonWordCharacters = ' ~!@#$%^&*()_+`-=[]{}|\;:"\',./<>?';
 
 /**
  * A class that knows how to search the terminal and how to display the results.
@@ -99,6 +100,17 @@ export class SearchHelper implements ISearchHelper {
     return this._selectResult(result);
   }
 
+  /**
+   * A found substring is a whole word if it doesn't have an alphanumeric character directly adjacent to it.
+   * @param searchIndex starting indext of the potential whole word substring
+   * @param line entire string in which the potential whole word was found
+   * @param term the substring that starts at searchIndex
+   */
+  private _isWholeWord(searchIndex: number, line: string, term: string): boolean {
+    return (((searchIndex === 0) || (nonWordCharacters.indexOf(line[searchIndex - 1]) !== -1)) &&
+         (((searchIndex + term.length) === line.length) || (nonWordCharacters.indexOf(line[searchIndex + term.length]) !== -1)));
+  }
+
   /**
    * Searches a line for a search term. Takes the provided terminal line and searches the text line, which may contain
    * subsequent terminal lines if the text is wrapped. If the provided line number is part of a wrapped text line that
@@ -136,6 +148,10 @@ export class SearchHelper implements ISearchHelper {
         y += Math.floor(searchIndex / this._terminal.cols);
         searchIndex = searchIndex % this._terminal.cols;
       }
+      if (searchOptions.wholeWord && !this._isWholeWord(searchIndex, searchStringLine, term)) {
+        return;
+      }
+
       const line = this._terminal._core.buffer.lines.get(y);
 
       for (let i = 0; i < searchIndex; i++) {

src/addons/search/search.test.ts

@@ -70,12 +70,12 @@ describe('search addon', () => {
         goodbye
       */
 
-      const hello0 = (term.searchHelper as any)._findInLine('Hello', 0);
-      const hello1 = (term.searchHelper as any)._findInLine('Hello', 1);
-      const hello2 = (term.searchHelper as any)._findInLine('Hello', 2);
-      const hello3 = (term.searchHelper as any)._findInLine('Hello', 3);
-      const llo = (term.searchHelper as any)._findInLine('llo', 1);
-      const goodbye = (term.searchHelper as any)._findInLine('goodbye', 2);
+      const hello0 = term.searchHelper.findInLine('Hello', 0);
+      const hello1 = term.searchHelper.findInLine('Hello', 1);
+      const hello2 = term.searchHelper.findInLine('Hello', 2);
+      const hello3 = term.searchHelper.findInLine('Hello', 3);
+      const llo = term.searchHelper.findInLine('llo', 1);
+      const goodbye = term.searchHelper.findInLine('goodbye', 2);
       expect(hello0).eql({col: 8, row: 0, term: 'Hello'});
       expect(hello1).eql(undefined);
       expect(hello2).eql({col: 2, row: 3, term: 'Hello'});
@@ -130,9 +130,9 @@ describe('search addon', () => {
         wholeWord: false,
         caseSensitive: true
       };
-      const hello0 = (term.searchHelper as any)._findInLine('Hello', 0, searchOptions);
-      const hello1 = (term.searchHelper as any)._findInLine('Hello', 1, searchOptions);
-      const hello2 = (term.searchHelper as any)._findInLine('Hello', 2, searchOptions);
+      const hello0 = term.searchHelper.findInLine('Hello', 0, searchOptions);
+      const hello1 = term.searchHelper.findInLine('Hello', 1, searchOptions);
+      const hello2 = term.searchHelper.findInLine('Hello', 2, searchOptions);
       expect(hello0).eql({col: 0, row: 0, term: 'Hello'});
       expect(hello1).eql(undefined);
       expect(hello2).eql({col: 8, row: 2, term: 'Hello'});
@@ -153,14 +153,96 @@ describe('search addon', () => {
         wholeWord: false,
         caseSensitive: true
       };
-      const hello0 = (term.searchHelper as any)._findInLine('Hello', 0, searchOptions);
-      const hello1 = (term.searchHelper as any)._findInLine('Hello$', 0, searchOptions);
-      const hello2 = (term.searchHelper as any)._findInLine('Hello', 1, searchOptions);
-      const hello3 = (term.searchHelper as any)._findInLine('Hello$', 1, searchOptions);
+      const hello0 = term.searchHelper.findInLine('Hello', 0, searchOptions);
+      const hello1 = term.searchHelper.findInLine('Hello$', 0, searchOptions);
+      const hello2 = term.searchHelper.findInLine('Hello', 1, searchOptions);
+      const hello3 = term.searchHelper.findInLine('Hello$', 1, searchOptions);
       expect(hello0).eql(undefined);
       expect(hello1).eql(undefined);
       expect(hello2).eql({col: 0, row: 1, term: 'Hello'});
       expect(hello3).eql({col: 5, row: 1, term: 'Hello'});
     });
+    it('should respect whole-word search option', function(): void {
+      search.apply(<any>MockTerminal);
+      const term = new MockTerminal({cols: 20, rows: 5});
+      term.core.write('Hello World\r\nWorld Hello\r\nWorldHelloWorld\r\nHelloWorld\r\nWorldHello');
+      term.pushWriteData();
+      const searchOptions = {
+        regex: false,
+        wholeWord: true,
+        caseSensitive: false
+      };
+      const hello0 = term.searchHelper.findInLine('Hello', 0, searchOptions);
+      const hello1 = term.searchHelper.findInLine('Hello', 1, searchOptions);
+      const hello2 = term.searchHelper.findInLine('Hello', 2, searchOptions);
+      const hello3 = term.searchHelper.findInLine('Hello', 3, searchOptions);
+      const hello4 = term.searchHelper.findInLine('Hello', 4, searchOptions);
+      expect(hello0).eql({col: 0, row: 0, term: 'Hello'});
+      expect(hello1).eql({col: 6, row: 1, term: 'Hello'});
+      expect(hello2).eql(undefined);
+      expect(hello3).eql(undefined);
+      expect(hello4).eql(undefined);
+    });
+    it('should respect whole-word + case sensitive search options', function(): void {
+      search.apply(<any>MockTerminal);
+      const term = new MockTerminal({cols: 20, rows: 5});
+      term.core.write('Hello World\r\nHelloWorld');
+      term.pushWriteData();
+      const searchOptions = {
+        regex: false,
+        wholeWord: true,
+        caseSensitive: true
+      };
+      const hello0 = term.searchHelper.findInLine('Hello', 0, searchOptions);
+      const hello1 = term.searchHelper.findInLine('hello', 0, searchOptions);
+      const hello2 = term.searchHelper.findInLine('Hello', 1, searchOptions);
+      const hello3 = term.searchHelper.findInLine('hello', 1, searchOptions);
+      expect(hello0).eql({col: 0, row: 0, term: 'Hello'});
+      expect(hello1).eql(undefined);
+      expect(hello2).eql(undefined);
+      expect(hello3).eql(undefined);
+    });
+    it('should respect whole-word + regex search options', function(): void {
+      search.apply(<any>MockTerminal);
+      const term = new MockTerminal({cols: 20, rows: 5});
+      term.core.write('Hello World Hello\r\nHelloWorldHello');
+      term.pushWriteData();
+      const searchOptions = {
+        regex: true,
+        wholeWord: true,
+        caseSensitive: false
+      };
+      const hello0 = term.searchHelper.findInLine('Hello', 0, searchOptions);
+      const hello1 = term.searchHelper.findInLine('Hello$', 0, searchOptions);
+      const hello2 = term.searchHelper.findInLine('Hello', 1, searchOptions);
+      const hello3 = term.searchHelper.findInLine('Hello$', 1, searchOptions);
+      expect(hello0).eql({col: 0, row: 0, term: 'hello'});
+      expect(hello1).eql({col: 12, row: 0, term: 'hello'});
+      expect(hello2).eql(undefined);
+      expect(hello3).eql(undefined);
+    });
+    it('should respect all search options', function(): void {
+      search.apply(<any>MockTerminal);
+      const term = new MockTerminal({cols: 20, rows: 5});
+      term.core.write('Hello World Hello\r\nHelloWorldHello');
+      term.pushWriteData();
+      const searchOptions = {
+        regex: true,
+        wholeWord: true,
+        caseSensitive: true
+      };
+      const hello0 = term.searchHelper.findInLine('Hello', 0, searchOptions);
+      const hello1 = term.searchHelper.findInLine('Hello$', 0, searchOptions);
+      const hello2 = term.searchHelper.findInLine('hello', 0, searchOptions);
+      const hello3 = term.searchHelper.findInLine('hello$', 0, searchOptions);
+      const hello4 = term.searchHelper.findInLine('hello', 1, searchOptions);
+      const hello5 = term.searchHelper.findInLine('hello$', 1, searchOptions);
+      expect(hello0).eql({col: 0, row: 0, term: 'Hello'});
+      expect(hello1).eql({col: 12, row: 0, term: 'Hello'});
+      expect(hello2).eql(undefined);
+      expect(hello3).eql(undefined);
+      expect(hello4).eql(undefined);
+      expect(hello5).eql(undefined);
+    });
   });
 });