ref: b00a2415ffe2895620baf6bae968d547cc723f21
dir: /common/id3lib/src/field_binary.cpp/
// $Id: field_binary.cpp,v 1.1 2002/01/21 08:16:21 menno Exp $ // id3lib: a C++ library for creating and manipulating id3v1/v2 tags // Copyright 1999, 2000 Scott Thomas Haug // This library is free software; you can redistribute it and/or modify it // under the terms of the GNU Library General Public License as published by // the Free Software Foundation; either version 2 of the License, or (at your // option) any later version. // // This library 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 Library General Public // License for more details. // // You should have received a copy of the GNU Library General Public License // along with this library; if not, write to the Free Software Foundation, // Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. // The id3lib authors encourage improvements and optimisations to be sent to // the id3lib coordinator. Please see the README file for details on where to // send such submissions. See the AUTHORS file for a list of people who have // contributed to id3lib. See the ChangeLog file for a list of changes to // id3lib. These files are distributed with id3lib at // http://download.sourceforge.net/id3lib/ #include <stdio.h> #include <memory.h> #include "field.h" #if defined HAVE_CONFIG_H #include <config.h> #endif void ID3_Field::Set(const uchar *newData, size_t newSize) { Clear(); if (newSize > 0) { __data = new uchar[newSize]; if (NULL == __data) { ID3_THROW(ID3E_NoMemory); } if (newData != NULL) { memcpy(__data, newData, newSize); } else { memset(__data, 0, newSize); } __size = newSize; __type = ID3FTY_BINARY; __changed = true; } return ; } void ID3_Field::Get(uchar *buffer, size_t buffLength) const { if (NULL == buffer) { ID3_THROW(ID3E_NoBuffer); } if (__data != NULL && __size > 0) { memcpy(buffer, __data, MIN(buffLength, __size)); } } void ID3_Field::FromFile(const char *info) { if (!info) { return; } FILE* temp_file = fopen(info, "rb"); if (temp_file != NULL) { fseek(temp_file, 0, SEEK_END); size_t fileSize = ftell(temp_file); fseek(temp_file, 0, SEEK_SET); uchar* buffer = new uchar[fileSize]; if (buffer != NULL) { fread(buffer, 1, fileSize, temp_file); this->Set(buffer, fileSize); delete [] buffer; } fclose(temp_file); } return ; } void ID3_Field::ToFile(const char *info) const { if (NULL == info) { ID3_THROW(ID3E_NoData); } if ((__data != NULL) && (__size > 0)) { FILE* temp_file = fopen(info, "wb"); if (temp_file != NULL) { fwrite(__data, 1, __size, temp_file); fclose(temp_file); } } return ; } size_t ID3_Field::ParseBinary(const uchar *buffer, size_t nSize) { // copy the remaining bytes, unless we're fixed length, in which case copy // the minimum of the remaining bytes vs. the fixed length size_t bytesUsed = (__length > 0 ? MIN(nSize, __length) : nSize); this->Set(buffer, bytesUsed); __changed = false; return bytesUsed; } size_t ID3_Field::RenderBinary(uchar *buffer) const { size_t bytesUsed = BinSize(); memcpy(buffer, (uchar *) __data, bytesUsed); __changed = false; return bytesUsed; }