Added support for searching accross wrapped lines

demo/client.ts

@@ -8,12 +8,12 @@
 /// <reference path="../typings/xterm.d.ts"/>
 
 import { Terminal } from '../lib/public/Terminal';
-import * as attach from '../build/addons/attach/attach';
-import * as fit from '../build/addons/fit/fit';
-import * as fullscreen from '../build/addons/fullscreen/fullscreen';
-import * as search from '../build/addons/search/search';
-import * as webLinks from '../build/addons/webLinks/webLinks';
-import * as winptyCompat from '../build/addons/winptyCompat/winptyCompat';
+import * as attach from '../lib/addons/attach/attach';
+import * as fit from '../lib/addons/fit/fit';
+import * as fullscreen from '../lib/addons/fullscreen/fullscreen';
+import * as search from '../lib/addons/search/search';
+import * as webLinks from '../lib/addons/webLinks/webLinks';
+import * as winptyCompat from '../lib/addons/winptyCompat/winptyCompat';
 
 // Pulling in the module's types relies on the <reference> above, it's looks a
 // little weird here as we're importing "this" module

src/addons/search/SearchHelper.ts

@@ -100,28 +100,41 @@ export class SearchHelper implements ISearchHelper {
   }
 
   /**
-   * Searches a line for a search term.
-   * @param term The search term.
+   * 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
+   * started on an earlier line then it is skipped since it will be properly searched when the terminal line that the
+   * text starts on is searched.
+   * @param term Tne search term.
    * @param y The line to search.
    * @param searchOptions Search options.
    * @return The search result if it was found.
    */
   protected _findInLine(term: string, y: number, searchOptions: ISearchOptions = {}): ISearchResult {
-    const lowerStringLine = this._terminal._core.buffer.translateBufferLineToString(y, true).toLowerCase();
+    if (this._terminal._core.buffer.lines.get(y).isWrapped) {
+      return;
+    }
+    const lowerStringLine = this.translateBufferLineToStringWithWrap(y, true).toLowerCase();
     const lowerTerm = term.toLowerCase();
     let searchIndex = -1;
     if (searchOptions.regex) {
       const searchRegex = RegExp(lowerTerm, 'g');
       const foundTerm = searchRegex.exec(lowerStringLine);
-      if (foundTerm) {
+      if (foundTerm && foundTerm[0].length > 0) {
         searchIndex = searchRegex.lastIndex - foundTerm[0].length;
         term = foundTerm[0];
       }
     } else {
       searchIndex = lowerStringLine.indexOf(lowerTerm);
     }
+
     if (searchIndex >= 0) {
+      // Adjust the row number and search index if needed since a "line" of text can span multiple rows
+      if (searchIndex >= this._terminal.cols) {
+        y += Math.floor(searchIndex / this._terminal.cols);
+        searchIndex = searchIndex % this._terminal.cols;
+      }
       const line = this._terminal._core.buffer.lines.get(y);
+
       for (let i = 0; i < searchIndex; i++) {
         const charData = line.get(i);
         // Adjust the searchIndex to normalize emoji into single chars
@@ -144,6 +157,28 @@ export class SearchHelper implements ISearchHelper {
     }
   }
 
+  /**
+   * Translates a buffer line to a string, including subsequent lines if they are wraps.
+   * Wide characters will count as two columns in the resulting string. This
+   * function is useful for getting the actual text underneath the raw selection
+   * position.
+   * @param line The line being translated.
+   * @param trimRight Whether to trim whitespace to the right.
+   */
+  public translateBufferLineToStringWithWrap(lineIndex: number, trimRight: boolean): string {
+    let lineString = '';
+    let lineWrapsToNext: boolean;
+
+    do {
+      lineString += this._terminal._core.buffer.translateBufferLineToString(lineIndex, true);
+      lineIndex++;
+      const nextLine = this._terminal._core.buffer.lines.get(lineIndex);
+      lineWrapsToNext = nextLine ? this._terminal._core.buffer.lines.get(lineIndex).isWrapped : false;
+    } while (lineWrapsToNext);
+
+    return lineString;
+  }
+
   /**
    * Selects and scrolls to a result.
    * @param result The result to select.

src/addons/search/search.test.ts

@@ -14,9 +14,11 @@ class MockTerminalPlain {}
 class MockTerminal {
   private _core: any;
   public searchHelper: TestSearchHelper;
+  public cols: number;
   constructor(options: any) {
     this._core = new (require('../../../lib/Terminal').Terminal)(options);
     this.searchHelper = new TestSearchHelper(this as any);
+    this.cols = options.cols;
   }
   get core(): any {
     return this._core;
@@ -32,53 +34,88 @@ class TestSearchHelper extends SearchHelper {
   }
 }
 
-describe('search addon', function(): void {
+describe('search addon', () => {
   describe('apply', () => {
     it('should register findNext and findPrevious', () => {
       search.apply(<any>MockTerminalPlain);
       assert.equal(typeof (<any>MockTerminalPlain).prototype.findNext, 'function');
       assert.equal(typeof (<any>MockTerminalPlain).prototype.findPrevious, 'function');
     });
   });
-  it('Searchhelper - should find correct position', function(): void {
-    search.apply(<any>MockTerminal);
-    const term = new MockTerminal({cols: 20, rows: 3});
-    term.core.write('Hello World\r\ntest\n123....hello');
-    term.pushWriteData();
-    const hello0 = term.searchHelper.findInLine('Hello', 0);
-    const hello1 = term.searchHelper.findInLine('Hello', 1);
-    const hello2 = term.searchHelper.findInLine('Hello', 2);
-    expect(hello0).eql({col: 0, row: 0, term: 'Hello'});
-    expect(hello1).eql(undefined);
-    expect(hello2).eql({col: 11, row: 2, term: 'Hello'});
-  });
-  it('should respect search regex', function(): void {
-    search.apply(<any>MockTerminal);
-    const term = new MockTerminal({cols: 10, rows: 4});
-    term.core.write('abcdefghijklmnopqrstuvwxyz\r\n~/dev  ');
-    /*
-      abcdefghij
-      klmnopqrst
-      uvwxyz
-      ~/dev
-    */
-    term.pushWriteData();
-    const searchOptions = {
-      regex: true,
-      wholeWord: false,
-      caseSensitive: false
-    };
-    const hello0 = term.searchHelper.findInLine('dee*', 0, searchOptions);
-    term.searchHelper.findInLine('jkk*', 0, searchOptions);
-    term.searchHelper.findInLine('mnn*', 1, searchOptions);
-    const tilda0 = term.searchHelper.findInLine('^~', 3, searchOptions);
-    const tilda1 = term.searchHelper.findInLine('^[~]', 3, searchOptions);
-    const tilda2 = term.searchHelper.findInLine('^\\~', 3, searchOptions);
-    expect(hello0).eql({col: 3, row: 0, term: 'de'});
-    // TODO: uncomment this test when line wrap search is checked in expect(hello1).eql({col: 9, row: 0, term: 'jk'});
-    // TODO: uncomment this test when line wrap search is checked in expect(hello2).eql(undefined);
-    expect(tilda0).eql({col: 0, row: 3, term: '~'});
-    expect(tilda1).eql({col: 0, row: 3, term: '~'});
-    expect(tilda2).eql({col: 0, row: 3, term: '~'});
+  describe('find', () => {
+    it('Searchhelper - should find correct position', () => {
+      search.apply(<any>MockTerminal);
+      const term = new MockTerminal({cols: 20, rows: 3});
+      term.core.write('Hello World\r\ntest\n123....hello');
+      term.pushWriteData();
+      const hello0 = term.searchHelper.findInLine('Hello', 0);
+      const hello1 = term.searchHelper.findInLine('Hello', 1);
+      const hello2 = term.searchHelper.findInLine('Hello', 2);
+      expect(hello0).eql({col: 0, row: 0, term: 'Hello'});
+      expect(hello1).eql(undefined);
+      expect(hello2).eql({col: 11, row: 2, term: 'Hello'});
+    });
+    it('should find search term accross line wrap', () => {
+      search.apply(<any>MockTerminal);
+      const term = new MockTerminal({cols: 10, rows: 5});
+      term.core.write('texttextHellotext\r\n');
+      term.core.write('texttexttextHellotext');
+      term.pushWriteData();
+      /*
+        texttextHe
+        llotext
+        texttextte
+        xtHellotex
+        t
+      */
+
+      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);
+      expect(hello0).eql({col: 8, row: 0, term: 'Hello'});
+      expect(hello1).eql(undefined);
+      expect(hello2).eql({col: 2, row: 3, term: 'Hello'});
+      expect(hello3).eql(undefined);
+      expect(llo).eql(undefined);
+    });
+    it('should respect search regex', () => {
+      search.apply(<any>MockTerminal);
+      const term = new MockTerminal({cols: 10, rows: 4});
+      term.core.write('abcdefghijklmnopqrstuvwxyz\r\n~/dev  ');
+      /*
+        abcdefghij
+        klmnopqrst
+        uvwxyz
+        ~/dev
+      */
+      term.pushWriteData();
+      const searchOptions = {
+        regex: true,
+        wholeWord: false,
+        caseSensitive: false
+      };
+      const hello0 = term.searchHelper.findInLine('dee*', 0, searchOptions);
+      const hello1 = term.searchHelper.findInLine('jkk*', 0, searchOptions);
+      const hello2 = term.searchHelper.findInLine('mnn*', 1, searchOptions);
+      const tilda0 = term.searchHelper.findInLine('^~', 3, searchOptions);
+      const tilda1 = term.searchHelper.findInLine('^[~]', 3, searchOptions);
+      const tilda2 = term.searchHelper.findInLine('^\\~', 3, searchOptions);
+      expect(hello0).eql({col: 3, row: 0, term: 'de'});
+      expect(hello1).eql({col: 9, row: 0, term: 'jk'});
+      expect(hello2).eql(undefined);
+      expect(tilda0).eql({col: 0, row: 3, term: '~'});
+      expect(tilda1).eql({col: 0, row: 3, term: '~'});
+      expect(tilda2).eql({col: 0, row: 3, term: '~'});
+    });
+    it('should not select empty lines', () => {
+      search.apply(<any>MockTerminal);
+      const term = new MockTerminal({cols: 20, rows: 3});
+      term.core.write('    ');
+      term.pushWriteData();
+      const line = term.searchHelper.findInLine('^.*$', 0, { regex: true });
+      expect(line).eql(undefined);
+    });
   });
 });