Windows: ListComPortsParser was reporting the same VID/PID for both COM12 and COM1. Fixes arduino#3333

Author: Federico Fissore

app/test/processing/app/windows/ListComPortsParserTest.java

@@ -32,6 +32,7 @@
 import org.junit.Test;
 
 import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
 
 public class ListComPortsParserTest {
 
@@ -46,12 +47,22 @@ public void shouldFindVIDPID() throws Exception {
   @Test
   public void shouldFindVIDPID2() throws Exception {
     String listComPortsOutput = "COM1 - (Standard port types) - ACPI\\PNP0501\\1\n" +
-            "COM3 - IVT Corporation - {F12D3CF8-B11D-457E-8641-BE2AF2D6D204}\\IVTCOMM\\1&27902E60&2&0001\n" +
-            "COM4 - IVT Corporation - {F12D3CF8-B11D-457E-8641-BE2AF2D6D204}\\IVTCOMM\\1&27902E60&2&0002\n" +
-            "COM18 - FTDI - FTDIBUS\\VID_0403+PID_0000+A9EPHBR7A\\0000";
+      "COM3 - IVT Corporation - {F12D3CF8-B11D-457E-8641-BE2AF2D6D204}\\IVTCOMM\\1&27902E60&2&0001\n" +
+      "COM4 - IVT Corporation - {F12D3CF8-B11D-457E-8641-BE2AF2D6D204}\\IVTCOMM\\1&27902E60&2&0002\n" +
+      "COM18 - FTDI - FTDIBUS\\VID_0403+PID_0000+A9EPHBR7A\\0000";
 
     assertEquals("0X0403_0X0000", new ListComPortsParser().extractVIDAndPID(listComPortsOutput, "COM18"));
   }
 
+  @Test
+  public void shouldNotBeFooledByCOMPortsWithSimilarNames() throws Exception {
+    String listComPortsOutput = "COM1 - (Standard port types) - ACPI\\PNP0501\\1\n" +
+      "COM2 - (Standard port types) - ACPI\\PNP0501\\2\n" +
+      "COM12 - Arduino LLC (www.arduino.cc) - USB\\VID_2341&PID_8041&MI_00\\8&AB76839&0&0000\n" +
+      "COM3 - FTDI - FTDIBUS\\VID_0403+PID_6015+DA00WSEWA\\0000";
+
+    assertEquals("0X2341_0X8041", new ListComPortsParser().extractVIDAndPID(listComPortsOutput, "COM12"));
+    assertNull(new ListComPortsParser().extractVIDAndPID(listComPortsOutput, "COM1"));
+  }
 
 }

arduino-core/src/processing/app/windows/ListComPortsParser.java

@@ -1,3 +1,32 @@
+/*
+ * This file is part of Arduino.
+ *
+ * Copyright 2015 Arduino LLC (http://www.arduino.cc/)
+ *
+ * Arduino is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ */
+
 package processing.app.windows;
 
 import java.io.BufferedReader;
@@ -8,7 +37,7 @@
 
 /**
  * Interprets the output of listComPorts.exe
- * <p/>
+ * <p>
  * https://github.com/todbot/usbSearch/
  */
 public class ListComPortsParser {
@@ -25,9 +54,11 @@ public String extractVIDAndPID(String output, String serial) throws IOException
     BufferedReader reader = new BufferedReader(new StringReader(output));
     String line;
     while ((line = reader.readLine()) != null) {
-      if (line.startsWith(serial.toUpperCase())) {
-        Matcher vidMatcher = vidRegExp.matcher(line);
-        Matcher pidMatcher = pidRegExp.matcher(line);
+      String[] lineParts = line.split(" ");
+      if (lineParts.length > 0 && lineParts[0].toUpperCase().equals(serial.toUpperCase())) {
+        String vidPidPart = lineParts[lineParts.length - 1];
+        Matcher vidMatcher = vidRegExp.matcher(vidPidPart);
+        Matcher pidMatcher = pidRegExp.matcher(vidPidPart);
         if (vidMatcher.find() && pidMatcher.find()) {
           return ("0x" + vidMatcher.group(1) + "_0x" + pidMatcher.group(1)).toUpperCase();
         }