Adding a new cmd CMD_READ_INPUT_ALT

[mcuee]

From https://github.com/libusb/hidapi/issues/229 This new CMD is to test hid_get_input_report.

diff --git a/hidapitester.c b/hidapitester.c
index b4ae3d9..8dcdbb5 100644
--- a/hidapitester.c
+++ b/hidapitester.c
@@ -84,6 +84,7 @@ enum {
     CMD_SEND_OUTPUT,
     CMD_SEND_FEATURE,
     CMD_READ_INPUT,
+       CMD_READ_INPUT_ALT,
     CMD_READ_FEATURE,
     CMD_READ_INPUT_FOREVER,
 };
@@ -204,6 +205,7 @@ int main(int argc, char* argv[])
          {"send-out",     required_argument, &cmd,   CMD_SEND_OUTPUT},
          {"send-feature", required_argument, &cmd,   CMD_SEND_FEATURE},
          {"read-input",   optional_argument, &cmd,   CMD_READ_INPUT},
+        {"read-input-alt",   optional_argument, &cmd,   CMD_READ_INPUT_ALT},
          {"read-in",      optional_argument, &cmd,   CMD_READ_INPUT},
          {"read-feature", required_argument, &cmd,   CMD_READ_FEATURE},
          {"read-input-forever",  optional_argument, &cmd,   CMD_READ_INPUT_FOREVER},
@@ -387,6 +389,22 @@ int main(int argc, char* argv[])
                         break;
                     }
                 } while( cmd == CMD_READ_INPUT_FOREVER );
+            }
+                       else if( cmd == CMD_READ_INPUT_ALT ) {
+
+                if( !dev ) {
+                    msg("Error on read: no device opened.\n"); break;
+                }
+                if( !buflen) {
+                    msg("Error on read: buffer length is 0. Use --len to specify.\n");
+                    break;
+                }
+                uint8_t report_id = (optarg) ? strtol(optarg,NULL,10) : 0;
+                buf[0] = report_id;
+                msg("Reading %d-byte input report using hid_get_input_report, report_id %d...",buflen, report_id);
+                res = hid_get_input_report(dev, buf, buflen);
+                msg("read %d bytes:\n",res);
+                printbuf(buf, buflen, print_base, print_width);
             }
             else if( cmd == CMD_READ_FEATURE ) {