1 /** 2 * \file emptyfolders.c 3 * Example program that prunes empty folders. 4 * 5 * Copyright (C) 2006 Andy Kelk <andy (at) mopoke.co.uk> 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 25 static void prune_empty_folders(LIBMTP_mtpdevice_t *device, LIBMTP_file_t *files, LIBMTP_folder_t *folderlist, int do_delete) 26 { 27 if(folderlist==NULL) 28 return; 29 30 if(folderlist->child == NULL) { // this *might* be empty 31 // therefore, check every file for this parent_id 32 int found = 0; 33 LIBMTP_file_t *file; 34 file = files; 35 while (file != NULL) { 36 if(file->parent_id == folderlist->folder_id) { // folder has a child 37 found = 1; 38 break; 39 } 40 file = file->next; 41 } 42 43 if(found == 0) { // no files claim this as a parent 44 printf("empty folder %u (%s)\n",folderlist->folder_id,folderlist->name); 45 if(do_delete) { 46 if (LIBMTP_Delete_Object(device,folderlist->folder_id) != 0) { 47 printf("Couldn't delete folder %u\n",folderlist->folder_id); 48 LIBMTP_Dump_Errorstack(device); 49 LIBMTP_Clear_Errorstack(device); 50 } 51 } 52 } 53 } 54 55 prune_empty_folders(device,files,folderlist->child,do_delete); // recurse down 56 prune_empty_folders(device,files,folderlist->sibling,do_delete); // recurse along 57 } 58 59 int main (int argc, char **argv) 60 { 61 // check if we're doing a dummy run 62 int do_delete = 0; 63 int opt; 64 65 fprintf(stdout, "libmtp version: " LIBMTP_VERSION_STRING "\n\n"); 66 67 while ( (opt = getopt(argc, argv, "d")) != -1 ) { 68 switch (opt) { 69 case 'd': 70 do_delete = 1; 71 break; 72 default: 73 break; 74 } 75 } 76 77 if(do_delete == 0) { 78 printf("This is a dummy run. No folders will be deleted.\n"); 79 printf("To delete folders, use the '-d' option.\n"); 80 } 81 82 LIBMTP_mtpdevice_t *device; 83 LIBMTP_folder_t *folders; 84 LIBMTP_file_t *files; 85 86 LIBMTP_Init(); 87 device = LIBMTP_Get_First_Device(); 88 if (device == NULL) { 89 printf("No devices.\n"); 90 exit (0); 91 } 92 93 // Get file listing. 94 files = LIBMTP_Get_Filelisting_With_Callback(device,NULL,NULL); 95 96 // Get folder listing. 97 folders = LIBMTP_Get_Folder_List(device); 98 99 if(folders == NULL) { 100 printf("No folders found\n"); 101 } else { 102 prune_empty_folders(device,files,folders,do_delete); 103 } 104 105 LIBMTP_destroy_folder_t(folders); 106 LIBMTP_destroy_file_t(files); 107 108 LIBMTP_Release_Device(device); 109 printf("OK.\n"); 110 exit (0); 111 } 112 113
