1 /* 2 * Copyright 2013 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "SkStream.h" 9 #include "SkStreamHelpers.h" 10 #include "SkTypes.h" 11 12 size_t CopyStreamToStorage(SkAutoMalloc* storage, SkStream* stream) { 13 SkASSERT(storage != NULL); 14 SkASSERT(stream != NULL); 15 16 if (stream->hasLength()) { 17 const size_t length = stream->getLength(); 18 void* dst = storage->reset(length); 19 if (stream->read(dst, length) != length) { 20 return 0; 21 } 22 return length; 23 } 24 25 SkDynamicMemoryWStream tempStream; 26 // Arbitrary buffer size. 27 const size_t bufferSize = 256 * 1024; // 256KB 28 char buffer[bufferSize]; 29 SkDEBUGCODE(size_t debugLength = 0;) 30 do { 31 size_t bytesRead = stream->read(buffer, bufferSize); 32 tempStream.write(buffer, bytesRead); 33 SkDEBUGCODE(debugLength += bytesRead); 34 SkASSERT(tempStream.bytesWritten() == debugLength); 35 } while (!stream->isAtEnd()); 36 const size_t length = tempStream.bytesWritten(); 37 void* dst = storage->reset(length); 38 tempStream.copyTo(dst); 39 return length; 40 } 41
