1 ////////////////////////////////////////////////////////////////////////////// 2 // 3 // Copyright (c) 2004-2021 musikcube team 4 // 5 // All rights reserved. 6 // 7 // Redistribution and use in source and binary forms, with or without 8 // modification, are permitted provided that the following conditions are met: 9 // 10 // * Redistributions of source code must retain the above copyright notice, 11 // this list of conditions and the following disclaimer. 12 // 13 // * Redistributions in binary form must reproduce the above copyright 14 // notice, this list of conditions and the following disclaimer in the 15 // documentation and/or other materials provided with the distribution. 16 // 17 // * Neither the name of the author nor the names of other contributors may 18 // be used to endorse or promote products derived from this software 19 // without specific prior written permission. 20 // 21 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 22 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 // ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 25 // LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 26 // CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 27 // SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 28 // INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 29 // CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 30 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 31 // POSSIBILITY OF SUCH DAMAGE. 32 // 33 ////////////////////////////////////////////////////////////////////////////// 34 35 #pragma once 36 37 #include "constants.h" 38 #include "IIndexerWriter.h" 39 #include "ITagStore.h" 40 #include <string> 41 42 namespace musik { namespace core { namespace sdk { 43 44 class IIndexerSource { 45 public: 46 virtual void Release() = 0; 47 48 virtual void OnBeforeScan() = 0; 49 50 virtual void OnAfterScan() = 0; 51 52 virtual ScanResult Scan( 53 IIndexerWriter* indexer, 54 const char** indexerPaths, 55 unsigned indexerPathsCount) = 0; 56 57 virtual void ScanTrack( 58 IIndexerWriter* indexer, 59 ITagStore* store, 60 const char* externalId) = 0; 61 62 virtual bool NeedsTrackScan() = 0; 63 64 virtual void Interrupt() = 0; 65 66 virtual bool HasStableIds() = 0; 67 68 virtual int SourceId() = 0; 69 }; 70 71 namespace indexer { 72 template <typename String=std::string> parseExternalId(const String & prefix,const String & externalId,String & fn,int & track)73 static bool parseExternalId(const String& prefix, const String& externalId, String& fn, int& track) { 74 if (externalId.find(String(prefix + "://")) == 0) { 75 String trimmed = externalId.substr(prefix.size() + 3); 76 auto slash = trimmed.find("/"); 77 if (slash != String::npos) { 78 try { 79 track = std::stoi(trimmed.substr(0, slash)); 80 fn = trimmed.substr(slash + 1); 81 return true; 82 } 83 catch (...) { 84 return false; 85 } 86 } 87 } 88 return false; 89 } 90 91 template <typename String=std::string> createExternalId(const String & prefix,const String & fn,int track)92 static inline String createExternalId(const String& prefix, const String& fn, int track) { 93 return prefix + "://" + std::to_string(track) + "/" + fn; 94 } 95 96 template <typename String=std::string> externalIdExists(const String & externalId)97 static inline bool externalIdExists(const String& externalId) { 98 String fn; 99 int trackNum; 100 if (!parseExternalId(externalId, fn, trackNum)) { 101 return false; 102 } 103 return fileExists(fn); 104 } 105 } 106 107 } } } 108