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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 CORE_SRC_FXCRT_EXTENSION_H_ | 7 #ifndef CORE_SRC_FXCRT_EXTENSION_H_ |
| 8 #define CORE_SRC_FXCRT_EXTENSION_H_ | 8 #define CORE_SRC_FXCRT_EXTENSION_H_ |
| 9 | 9 |
| 10 #include "../../include/fxcrt/fx_safe_types.h" | 10 #include "../../include/fxcrt/fx_safe_types.h" |
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| 191 , m_nCurPos(0) | 191 , m_nCurPos(0) |
| 192 , m_nGrowSize(FX_MEMSTREAM_BlockSize) | 192 , m_nGrowSize(FX_MEMSTREAM_BlockSize) |
| 193 , m_bUseRange(FALSE) | 193 , m_bUseRange(FALSE) |
| 194 { | 194 { |
| 195 m_Blocks.Add(pBuffer); | 195 m_Blocks.Add(pBuffer); |
| 196 m_dwFlags = FX_MEMSTREAM_Consecutive | (bTakeOver ? FX_MEMSTREAM_TakeOve
r : 0); | 196 m_dwFlags = FX_MEMSTREAM_Consecutive | (bTakeOver ? FX_MEMSTREAM_TakeOve
r : 0); |
| 197 } | 197 } |
| 198 ~CFX_MemoryStream() | 198 ~CFX_MemoryStream() |
| 199 { | 199 { |
| 200 if (m_dwFlags & FX_MEMSTREAM_TakeOver) { | 200 if (m_dwFlags & FX_MEMSTREAM_TakeOver) { |
| 201 for (FX_INT32 i = 0; i < m_Blocks.GetSize(); i++) { | 201 for (int32_t i = 0; i < m_Blocks.GetSize(); i++) { |
| 202 FX_Free((FX_LPBYTE)m_Blocks[i]); | 202 FX_Free((FX_LPBYTE)m_Blocks[i]); |
| 203 } | 203 } |
| 204 } | 204 } |
| 205 m_Blocks.RemoveAll(); | 205 m_Blocks.RemoveAll(); |
| 206 } | 206 } |
| 207 virtual IFX_FileStream* Retain() override | 207 virtual IFX_FileStream* Retain() override |
| 208 { | 208 { |
| 209 m_dwCount ++; | 209 m_dwCount ++; |
| 210 return this; | 210 return this; |
| 211 } | 211 } |
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| 301 if (m_nCurPos >= m_nCurSize) { | 301 if (m_nCurPos >= m_nCurSize) { |
| 302 return 0; | 302 return 0; |
| 303 } | 303 } |
| 304 if (m_bUseRange) { | 304 if (m_bUseRange) { |
| 305 size_t availSize = m_nOffset + m_nSize - m_nCurPos; | 305 size_t availSize = m_nOffset + m_nSize - m_nCurPos; |
| 306 if (availSize < size) { | 306 if (availSize < size) { |
| 307 size -= size - (size_t)availSize; | 307 size -= size - (size_t)availSize; |
| 308 } | 308 } |
| 309 } | 309 } |
| 310 size_t nRead = FX_MIN(size, m_nCurSize - m_nCurPos); | 310 size_t nRead = FX_MIN(size, m_nCurSize - m_nCurPos); |
| 311 if (!ReadBlock(buffer, (FX_INT32)m_nCurPos, nRead)) { | 311 if (!ReadBlock(buffer, (int32_t)m_nCurPos, nRead)) { |
| 312 return 0; | 312 return 0; |
| 313 } | 313 } |
| 314 return nRead; | 314 return nRead; |
| 315 } | 315 } |
| 316 virtual FX_BOOL WriteBlock(const void* buffer, F
X_FILESIZE offset, size_t size) override | 316 virtual FX_BOOL WriteBlock(const void* buffer, F
X_FILESIZE offset, size_t size) override |
| 317 { | 317 { |
| 318 if (!buffer || !size) { | 318 if (!buffer || !size) { |
| 319 return FALSE; | 319 return FALSE; |
| 320 } | 320 } |
| 321 if (m_bUseRange) { | 321 if (m_bUseRange) { |
| 322 offset += (FX_FILESIZE)m_nOffset; | 322 offset += (FX_FILESIZE)m_nOffset; |
| 323 } | 323 } |
| 324 if (m_dwFlags & FX_MEMSTREAM_Consecutive) { | 324 if (m_dwFlags & FX_MEMSTREAM_Consecutive) { |
| 325 FX_SAFE_SIZE_T newPos = size; | 325 FX_SAFE_SIZE_T newPos = size; |
| 326 newPos += offset; | 326 newPos += offset; |
| 327 if (!newPos.IsValid()) | 327 if (!newPos.IsValid()) |
| 328 return FALSE; | 328 return FALSE; |
| 329 | 329 |
| 330 m_nCurPos = newPos.ValueOrDie(); | 330 m_nCurPos = newPos.ValueOrDie(); |
| 331 if (m_nCurPos > m_nTotalSize) { | 331 if (m_nCurPos > m_nTotalSize) { |
| 332 m_nTotalSize = (m_nCurPos + m_nGrowSize - 1) / m_nGrowSize * m_n
GrowSize; | 332 m_nTotalSize = (m_nCurPos + m_nGrowSize - 1) / m_nGrowSize * m_n
GrowSize; |
| 333 if (m_Blocks.GetSize() < 1) { | 333 if (m_Blocks.GetSize() < 1) { |
| 334 void* block = FX_Alloc(FX_BYTE, m_nTotalSize); | 334 void* block = FX_Alloc(uint8_t, m_nTotalSize); |
| 335 m_Blocks.Add(block); | 335 m_Blocks.Add(block); |
| 336 } else { | 336 } else { |
| 337 m_Blocks[0] = FX_Realloc(FX_BYTE, m_Blocks[0], m_nTotalSize)
; | 337 m_Blocks[0] = FX_Realloc(uint8_t, m_Blocks[0], m_nTotalSize)
; |
| 338 } | 338 } |
| 339 if (!m_Blocks[0]) { | 339 if (!m_Blocks[0]) { |
| 340 m_Blocks.RemoveAll(); | 340 m_Blocks.RemoveAll(); |
| 341 return FALSE; | 341 return FALSE; |
| 342 } | 342 } |
| 343 } | 343 } |
| 344 FXSYS_memcpy32((FX_LPBYTE)m_Blocks[0] + (size_t)offset, buffer, size
); | 344 FXSYS_memcpy32((FX_LPBYTE)m_Blocks[0] + (size_t)offset, buffer, size
); |
| 345 if (m_nCurSize < m_nCurPos) { | 345 if (m_nCurSize < m_nCurPos) { |
| 346 m_nCurSize = m_nCurPos; | 346 m_nCurSize = m_nCurPos; |
| 347 } | 347 } |
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| 378 return TRUE; | 378 return TRUE; |
| 379 } | 379 } |
| 380 virtual FX_BOOL IsConsecutive() const override | 380 virtual FX_BOOL IsConsecutive() const override |
| 381 { | 381 { |
| 382 return m_dwFlags & FX_MEMSTREAM_Consecutive; | 382 return m_dwFlags & FX_MEMSTREAM_Consecutive; |
| 383 } | 383 } |
| 384 virtual void EstimateSize(size_t nInitSize, s
ize_t nGrowSize) override | 384 virtual void EstimateSize(size_t nInitSize, s
ize_t nGrowSize) override |
| 385 { | 385 { |
| 386 if (m_dwFlags & FX_MEMSTREAM_Consecutive) { | 386 if (m_dwFlags & FX_MEMSTREAM_Consecutive) { |
| 387 if (m_Blocks.GetSize() < 1) { | 387 if (m_Blocks.GetSize() < 1) { |
| 388 FX_LPBYTE pBlock = FX_Alloc(FX_BYTE, FX_MAX(nInitSize, 4096)); | 388 FX_LPBYTE pBlock = FX_Alloc(uint8_t, FX_MAX(nInitSize, 4096)); |
| 389 m_Blocks.Add(pBlock); | 389 m_Blocks.Add(pBlock); |
| 390 } | 390 } |
| 391 m_nGrowSize = FX_MAX(nGrowSize, 4096); | 391 m_nGrowSize = FX_MAX(nGrowSize, 4096); |
| 392 } else if (m_Blocks.GetSize() < 1) { | 392 } else if (m_Blocks.GetSize() < 1) { |
| 393 m_nGrowSize = FX_MAX(nGrowSize, 4096); | 393 m_nGrowSize = FX_MAX(nGrowSize, 4096); |
| 394 } | 394 } |
| 395 } | 395 } |
| 396 virtual FX_LPBYTE GetBuffer() const override | 396 virtual FX_LPBYTE GetBuffer() const override |
| 397 { | 397 { |
| 398 return m_Blocks.GetSize() ? (FX_LPBYTE)m_Blocks[0] : NULL; | 398 return m_Blocks.GetSize() ? (FX_LPBYTE)m_Blocks[0] : NULL; |
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| 431 size_t m_nOffset; | 431 size_t m_nOffset; |
| 432 size_t m_nSize; | 432 size_t m_nSize; |
| 433 FX_BOOL ExpandBlocks(size_t size) | 433 FX_BOOL ExpandBlocks(size_t size) |
| 434 { | 434 { |
| 435 if (m_nCurSize < size) { | 435 if (m_nCurSize < size) { |
| 436 m_nCurSize = size; | 436 m_nCurSize = size; |
| 437 } | 437 } |
| 438 if (size <= m_nTotalSize) { | 438 if (size <= m_nTotalSize) { |
| 439 return TRUE; | 439 return TRUE; |
| 440 } | 440 } |
| 441 FX_INT32 iCount = m_Blocks.GetSize(); | 441 int32_t iCount = m_Blocks.GetSize(); |
| 442 size = (size - m_nTotalSize + m_nGrowSize - 1) / m_nGrowSize; | 442 size = (size - m_nTotalSize + m_nGrowSize - 1) / m_nGrowSize; |
| 443 m_Blocks.SetSize(m_Blocks.GetSize() + (FX_INT32)size); | 443 m_Blocks.SetSize(m_Blocks.GetSize() + (int32_t)size); |
| 444 while (size --) { | 444 while (size --) { |
| 445 FX_LPBYTE pBlock = FX_Alloc(FX_BYTE, m_nGrowSize); | 445 FX_LPBYTE pBlock = FX_Alloc(uint8_t, m_nGrowSize); |
| 446 m_Blocks.SetAt(iCount ++, pBlock); | 446 m_Blocks.SetAt(iCount ++, pBlock); |
| 447 m_nTotalSize += m_nGrowSize; | 447 m_nTotalSize += m_nGrowSize; |
| 448 } | 448 } |
| 449 return TRUE; | 449 return TRUE; |
| 450 } | 450 } |
| 451 }; | 451 }; |
| 452 #ifdef __cplusplus | 452 #ifdef __cplusplus |
| 453 extern "C" { | 453 extern "C" { |
| 454 #endif | 454 #endif |
| 455 #define MT_N 848 | 455 #define MT_N 848 |
| 456 #define MT_M 456 | 456 #define MT_M 456 |
| 457 #define MT_Matrix_A 0x9908b0df | 457 #define MT_Matrix_A 0x9908b0df |
| 458 #define MT_Upper_Mask 0x80000000 | 458 #define MT_Upper_Mask 0x80000000 |
| 459 #define MT_Lower_Mask 0x7fffffff | 459 #define MT_Lower_Mask 0x7fffffff |
| 460 typedef struct _FX_MTRANDOMCONTEXT { | 460 typedef struct _FX_MTRANDOMCONTEXT { |
| 461 _FX_MTRANDOMCONTEXT() | 461 _FX_MTRANDOMCONTEXT() |
| 462 { | 462 { |
| 463 mti = MT_N + 1; | 463 mti = MT_N + 1; |
| 464 bHaveSeed = FALSE; | 464 bHaveSeed = FALSE; |
| 465 } | 465 } |
| 466 FX_DWORD mti; | 466 FX_DWORD mti; |
| 467 FX_BOOL bHaveSeed; | 467 FX_BOOL bHaveSeed; |
| 468 FX_DWORD mt[MT_N]; | 468 FX_DWORD mt[MT_N]; |
| 469 } FX_MTRANDOMCONTEXT, * FX_LPMTRANDOMCONTEXT; | 469 } FX_MTRANDOMCONTEXT, * FX_LPMTRANDOMCONTEXT; |
| 470 typedef FX_MTRANDOMCONTEXT const * FX_LPCMTRANDOMCONTEXT; | 470 typedef FX_MTRANDOMCONTEXT const * FX_LPCMTRANDOMCONTEXT; |
| 471 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ | 471 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
| 472 FX_BOOL FX_GenerateCryptoRandom(FX_LPDWORD pBuffer, FX_INT32 iCount); | 472 FX_BOOL FX_GenerateCryptoRandom(FX_LPDWORD pBuffer, int32_t iCount); |
| 473 #endif | 473 #endif |
| 474 #ifdef __cplusplus | 474 #ifdef __cplusplus |
| 475 } | 475 } |
| 476 #endif | 476 #endif |
| 477 | 477 |
| 478 #endif // CORE_SRC_FXCRT_EXTENSION_H_ | 478 #endif // CORE_SRC_FXCRT_EXTENSION_H_ |
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