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1 // Copyright 2014 PDFium Authors. All rights reserved. | 1 // Copyright 2014 PDFium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com | 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com |
6 | 6 |
7 #ifndef _FXCRT_EXTENSION_IMP_ | 7 #ifndef _FXCRT_EXTENSION_IMP_ |
8 #define _FXCRT_EXTENSION_IMP_ | 8 #define _FXCRT_EXTENSION_IMP_ |
9 | 9 |
10 #include "fx_safe_types.h" | 10 #include "fx_safe_types.h" |
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341 } | 341 } |
342 virtual FX_BOOL IsConsecutive() const FX_OVERRI
DE | 342 virtual FX_BOOL IsConsecutive() const FX_OVERRI
DE |
343 { | 343 { |
344 return m_dwFlags & FX_MEMSTREAM_Consecutive; | 344 return m_dwFlags & FX_MEMSTREAM_Consecutive; |
345 } | 345 } |
346 virtual void EstimateSize(size_t nInitSize, s
ize_t nGrowSize) FX_OVERRIDE | 346 virtual void EstimateSize(size_t nInitSize, s
ize_t nGrowSize) FX_OVERRIDE |
347 { | 347 { |
348 if (m_dwFlags & FX_MEMSTREAM_Consecutive) { | 348 if (m_dwFlags & FX_MEMSTREAM_Consecutive) { |
349 if (m_Blocks.GetSize() < 1) { | 349 if (m_Blocks.GetSize() < 1) { |
350 FX_LPBYTE pBlock = FX_Alloc(FX_BYTE, FX_MAX(nInitSize, 4096)); | 350 FX_LPBYTE pBlock = FX_Alloc(FX_BYTE, FX_MAX(nInitSize, 4096)); |
351 if (pBlock) { | 351 m_Blocks.Add(pBlock); |
352 m_Blocks.Add(pBlock); | |
353 } | |
354 } | 352 } |
355 m_nGrowSize = FX_MAX(nGrowSize, 4096); | 353 m_nGrowSize = FX_MAX(nGrowSize, 4096); |
356 } else if (m_Blocks.GetSize() < 1) { | 354 } else if (m_Blocks.GetSize() < 1) { |
357 m_nGrowSize = FX_MAX(nGrowSize, 4096); | 355 m_nGrowSize = FX_MAX(nGrowSize, 4096); |
358 } | 356 } |
359 } | 357 } |
360 virtual FX_LPBYTE GetBuffer() const FX_OVERRIDE | 358 virtual FX_LPBYTE GetBuffer() const FX_OVERRIDE |
361 { | 359 { |
362 return m_Blocks.GetSize() ? (FX_LPBYTE)m_Blocks[0] : NULL; | 360 return m_Blocks.GetSize() ? (FX_LPBYTE)m_Blocks[0] : NULL; |
363 } | 361 } |
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400 m_nCurSize = size; | 398 m_nCurSize = size; |
401 } | 399 } |
402 if (size <= m_nTotalSize) { | 400 if (size <= m_nTotalSize) { |
403 return TRUE; | 401 return TRUE; |
404 } | 402 } |
405 FX_INT32 iCount = m_Blocks.GetSize(); | 403 FX_INT32 iCount = m_Blocks.GetSize(); |
406 size = (size - m_nTotalSize + m_nGrowSize - 1) / m_nGrowSize; | 404 size = (size - m_nTotalSize + m_nGrowSize - 1) / m_nGrowSize; |
407 m_Blocks.SetSize(m_Blocks.GetSize() + (FX_INT32)size); | 405 m_Blocks.SetSize(m_Blocks.GetSize() + (FX_INT32)size); |
408 while (size --) { | 406 while (size --) { |
409 FX_LPBYTE pBlock = FX_Alloc(FX_BYTE, m_nGrowSize); | 407 FX_LPBYTE pBlock = FX_Alloc(FX_BYTE, m_nGrowSize); |
410 if (!pBlock) { | |
411 return FALSE; | |
412 } | |
413 m_Blocks.SetAt(iCount ++, pBlock); | 408 m_Blocks.SetAt(iCount ++, pBlock); |
414 m_nTotalSize += m_nGrowSize; | 409 m_nTotalSize += m_nGrowSize; |
415 } | 410 } |
416 return TRUE; | 411 return TRUE; |
417 } | 412 } |
418 }; | 413 }; |
419 #ifdef __cplusplus | 414 #ifdef __cplusplus |
420 extern "C" { | 415 extern "C" { |
421 #endif | 416 #endif |
422 #define MT_N 848 | 417 #define MT_N 848 |
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435 FX_DWORD mt[MT_N]; | 430 FX_DWORD mt[MT_N]; |
436 } FX_MTRANDOMCONTEXT, * FX_LPMTRANDOMCONTEXT; | 431 } FX_MTRANDOMCONTEXT, * FX_LPMTRANDOMCONTEXT; |
437 typedef FX_MTRANDOMCONTEXT const * FX_LPCMTRANDOMCONTEXT; | 432 typedef FX_MTRANDOMCONTEXT const * FX_LPCMTRANDOMCONTEXT; |
438 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ | 433 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
439 FX_BOOL FX_GenerateCryptoRandom(FX_LPDWORD pBuffer, FX_INT32 iCount); | 434 FX_BOOL FX_GenerateCryptoRandom(FX_LPDWORD pBuffer, FX_INT32 iCount); |
440 #endif | 435 #endif |
441 #ifdef __cplusplus | 436 #ifdef __cplusplus |
442 } | 437 } |
443 #endif | 438 #endif |
444 #endif | 439 #endif |
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