1 /** 2 * \file trexist.c 3 * Example program to check if a certain track exists on the device. 4 * 5 * Copyright (C) 2006 The libmtp development team. 6 * 7 * This library is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU Lesser General Public 9 * License as published by the Free Software Foundation; either 10 * version 2 of the License, or (at your option) any later version. 11 * 12 * This library is distributed in the hope that it will be useful, 13 * but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 15 * Lesser General Public License for more details. 16 * 17 * You should have received a copy of the GNU Lesser General Public 18 * License along with this library; if not, write to the 19 * Free Software Foundation, Inc., 59 Temple Place - Suite 330, 20 * Boston, MA 02111-1307, USA. 21 */ 22 #include "common.h" 23 #include <stdlib.h> 24 #include <limits.h> 25 26 static void usage (void) 27 { 28 fprintf(stderr, "trexist <trackid>\n"); 29 } 30 31 int main (int argc, char **argv) 32 { 33 LIBMTP_mtpdevice_t *device; 34 uint32_t id; 35 char *endptr; 36 37 fprintf(stdout, "libmtp version: " LIBMTP_VERSION_STRING "\n\n"); 38 39 // We need track ID 40 if ( argc != 2 ) { 41 usage(); 42 return 1; 43 } 44 45 // Sanity check song ID 46 id = strtoul(argv[1], &endptr, 10); 47 if ( *endptr != 0 ) { 48 fprintf(stderr, "illegal value %s\n", argv[1]); 49 return 1; 50 } else if ( ! id ) { 51 fprintf(stderr, "bad song id %u\n", id); 52 return 1; 53 } 54 55 LIBMTP_Init(); 56 device = LIBMTP_Get_First_Device(); 57 if (device == NULL) { 58 printf("No devices. Connect/replug device and try again.\n"); 59 exit (0); 60 } 61 62 printf("%s\n", LIBMTP_Track_Exists(device, id) ? "Yes" : "No"); 63 64 LIBMTP_Release_Device(device); 65 printf("OK.\n"); 66 exit (0); 67 } 68 69
