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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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| 153 , m_nCurPos(0) | 153 , m_nCurPos(0) |
| 154 , m_nGrowSize(FX_MEMSTREAM_BlockSize) | 154 , m_nGrowSize(FX_MEMSTREAM_BlockSize) |
| 155 , m_bUseRange(FALSE) | 155 , m_bUseRange(FALSE) |
| 156 { | 156 { |
| 157 m_Blocks.Add(pBuffer); | 157 m_Blocks.Add(pBuffer); |
| 158 m_dwFlags = FX_MEMSTREAM_Consecutive | (bTakeOver ? FX_MEMSTREAM_TakeOve
r : 0); | 158 m_dwFlags = FX_MEMSTREAM_Consecutive | (bTakeOver ? FX_MEMSTREAM_TakeOve
r : 0); |
| 159 } | 159 } |
| 160 ~CFX_MemoryStream() | 160 ~CFX_MemoryStream() |
| 161 { | 161 { |
| 162 if (m_dwFlags & FX_MEMSTREAM_TakeOver) { | 162 if (m_dwFlags & FX_MEMSTREAM_TakeOver) { |
| 163 for (FX_INT32 i = 0; i < m_Blocks.GetSize(); i++) { | 163 for (int32_t i = 0; i < m_Blocks.GetSize(); i++) { |
| 164 FX_Free((FX_LPBYTE)m_Blocks[i]); | 164 FX_Free((FX_LPBYTE)m_Blocks[i]); |
| 165 } | 165 } |
| 166 } | 166 } |
| 167 m_Blocks.RemoveAll(); | 167 m_Blocks.RemoveAll(); |
| 168 } | 168 } |
| 169 virtual IFX_FileStream* Retain() override | 169 virtual IFX_FileStream* Retain() override |
| 170 { | 170 { |
| 171 m_dwCount ++; | 171 m_dwCount ++; |
| 172 return this; | 172 return this; |
| 173 } | 173 } |
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| 263 if (m_nCurPos >= m_nCurSize) { | 263 if (m_nCurPos >= m_nCurSize) { |
| 264 return 0; | 264 return 0; |
| 265 } | 265 } |
| 266 if (m_bUseRange) { | 266 if (m_bUseRange) { |
| 267 size_t availSize = m_nOffset + m_nSize - m_nCurPos; | 267 size_t availSize = m_nOffset + m_nSize - m_nCurPos; |
| 268 if (availSize < size) { | 268 if (availSize < size) { |
| 269 size -= size - (size_t)availSize; | 269 size -= size - (size_t)availSize; |
| 270 } | 270 } |
| 271 } | 271 } |
| 272 size_t nRead = FX_MIN(size, m_nCurSize - m_nCurPos); | 272 size_t nRead = FX_MIN(size, m_nCurSize - m_nCurPos); |
| 273 if (!ReadBlock(buffer, (FX_INT32)m_nCurPos, nRead)) { | 273 if (!ReadBlock(buffer, (int32_t)m_nCurPos, nRead)) { |
| 274 return 0; | 274 return 0; |
| 275 } | 275 } |
| 276 return nRead; | 276 return nRead; |
| 277 } | 277 } |
| 278 virtual FX_BOOL WriteBlock(const void* buffer, F
X_FILESIZE offset, size_t size) override | 278 virtual FX_BOOL WriteBlock(const void* buffer, F
X_FILESIZE offset, size_t size) override |
| 279 { | 279 { |
| 280 if (!buffer || !size) { | 280 if (!buffer || !size) { |
| 281 return FALSE; | 281 return FALSE; |
| 282 } | 282 } |
| 283 if (m_bUseRange) { | 283 if (m_bUseRange) { |
| 284 offset += (FX_FILESIZE)m_nOffset; | 284 offset += (FX_FILESIZE)m_nOffset; |
| 285 } | 285 } |
| 286 if (m_dwFlags & FX_MEMSTREAM_Consecutive) { | 286 if (m_dwFlags & FX_MEMSTREAM_Consecutive) { |
| 287 FX_SAFE_SIZE_T newPos = size; | 287 FX_SAFE_SIZE_T newPos = size; |
| 288 newPos += offset; | 288 newPos += offset; |
| 289 if (!newPos.IsValid()) | 289 if (!newPos.IsValid()) |
| 290 return FALSE; | 290 return FALSE; |
| 291 | 291 |
| 292 m_nCurPos = newPos.ValueOrDie(); | 292 m_nCurPos = newPos.ValueOrDie(); |
| 293 if (m_nCurPos > m_nTotalSize) { | 293 if (m_nCurPos > m_nTotalSize) { |
| 294 m_nTotalSize = (m_nCurPos + m_nGrowSize - 1) / m_nGrowSize * m_n
GrowSize; | 294 m_nTotalSize = (m_nCurPos + m_nGrowSize - 1) / m_nGrowSize * m_n
GrowSize; |
| 295 if (m_Blocks.GetSize() < 1) { | 295 if (m_Blocks.GetSize() < 1) { |
| 296 void* block = FX_Alloc(FX_BYTE, m_nTotalSize); | 296 void* block = FX_Alloc(uint8_t, m_nTotalSize); |
| 297 m_Blocks.Add(block); | 297 m_Blocks.Add(block); |
| 298 } else { | 298 } else { |
| 299 m_Blocks[0] = FX_Realloc(FX_BYTE, m_Blocks[0], m_nTotalSize)
; | 299 m_Blocks[0] = FX_Realloc(uint8_t, m_Blocks[0], m_nTotalSize)
; |
| 300 } | 300 } |
| 301 if (!m_Blocks[0]) { | 301 if (!m_Blocks[0]) { |
| 302 m_Blocks.RemoveAll(); | 302 m_Blocks.RemoveAll(); |
| 303 return FALSE; | 303 return FALSE; |
| 304 } | 304 } |
| 305 } | 305 } |
| 306 FXSYS_memcpy32((FX_LPBYTE)m_Blocks[0] + (size_t)offset, buffer, size
); | 306 FXSYS_memcpy32((FX_LPBYTE)m_Blocks[0] + (size_t)offset, buffer, size
); |
| 307 if (m_nCurSize < m_nCurPos) { | 307 if (m_nCurSize < m_nCurPos) { |
| 308 m_nCurSize = m_nCurPos; | 308 m_nCurSize = m_nCurPos; |
| 309 } | 309 } |
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| 340 return TRUE; | 340 return TRUE; |
| 341 } | 341 } |
| 342 virtual FX_BOOL IsConsecutive() const override | 342 virtual FX_BOOL IsConsecutive() const override |
| 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) override | 346 virtual void EstimateSize(size_t nInitSize, s
ize_t nGrowSize) 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(uint8_t, FX_MAX(nInitSize, 4096)); |
| 351 m_Blocks.Add(pBlock); | 351 m_Blocks.Add(pBlock); |
| 352 } | 352 } |
| 353 m_nGrowSize = FX_MAX(nGrowSize, 4096); | 353 m_nGrowSize = FX_MAX(nGrowSize, 4096); |
| 354 } else if (m_Blocks.GetSize() < 1) { | 354 } else if (m_Blocks.GetSize() < 1) { |
| 355 m_nGrowSize = FX_MAX(nGrowSize, 4096); | 355 m_nGrowSize = FX_MAX(nGrowSize, 4096); |
| 356 } | 356 } |
| 357 } | 357 } |
| 358 virtual FX_LPBYTE GetBuffer() const override | 358 virtual FX_LPBYTE GetBuffer() const override |
| 359 { | 359 { |
| 360 return m_Blocks.GetSize() ? (FX_LPBYTE)m_Blocks[0] : NULL; | 360 return m_Blocks.GetSize() ? (FX_LPBYTE)m_Blocks[0] : NULL; |
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| 393 size_t m_nOffset; | 393 size_t m_nOffset; |
| 394 size_t m_nSize; | 394 size_t m_nSize; |
| 395 FX_BOOL ExpandBlocks(size_t size) | 395 FX_BOOL ExpandBlocks(size_t size) |
| 396 { | 396 { |
| 397 if (m_nCurSize < size) { | 397 if (m_nCurSize < size) { |
| 398 m_nCurSize = size; | 398 m_nCurSize = size; |
| 399 } | 399 } |
| 400 if (size <= m_nTotalSize) { | 400 if (size <= m_nTotalSize) { |
| 401 return TRUE; | 401 return TRUE; |
| 402 } | 402 } |
| 403 FX_INT32 iCount = m_Blocks.GetSize(); | 403 int32_t iCount = m_Blocks.GetSize(); |
| 404 size = (size - m_nTotalSize + m_nGrowSize - 1) / m_nGrowSize; | 404 size = (size - m_nTotalSize + m_nGrowSize - 1) / m_nGrowSize; |
| 405 m_Blocks.SetSize(m_Blocks.GetSize() + (FX_INT32)size); | 405 m_Blocks.SetSize(m_Blocks.GetSize() + (int32_t)size); |
| 406 while (size --) { | 406 while (size --) { |
| 407 FX_LPBYTE pBlock = FX_Alloc(FX_BYTE, m_nGrowSize); | 407 FX_LPBYTE pBlock = FX_Alloc(uint8_t, m_nGrowSize); |
| 408 m_Blocks.SetAt(iCount ++, pBlock); | 408 m_Blocks.SetAt(iCount ++, pBlock); |
| 409 m_nTotalSize += m_nGrowSize; | 409 m_nTotalSize += m_nGrowSize; |
| 410 } | 410 } |
| 411 return TRUE; | 411 return TRUE; |
| 412 } | 412 } |
| 413 }; | 413 }; |
| 414 #ifdef __cplusplus | 414 #ifdef __cplusplus |
| 415 extern "C" { | 415 extern "C" { |
| 416 #endif | 416 #endif |
| 417 #define MT_N 848 | 417 #define MT_N 848 |
| 418 #define MT_M 456 | 418 #define MT_M 456 |
| 419 #define MT_Matrix_A 0x9908b0df | 419 #define MT_Matrix_A 0x9908b0df |
| 420 #define MT_Upper_Mask 0x80000000 | 420 #define MT_Upper_Mask 0x80000000 |
| 421 #define MT_Lower_Mask 0x7fffffff | 421 #define MT_Lower_Mask 0x7fffffff |
| 422 typedef struct _FX_MTRANDOMCONTEXT { | 422 typedef struct _FX_MTRANDOMCONTEXT { |
| 423 _FX_MTRANDOMCONTEXT() | 423 _FX_MTRANDOMCONTEXT() |
| 424 { | 424 { |
| 425 mti = MT_N + 1; | 425 mti = MT_N + 1; |
| 426 bHaveSeed = FALSE; | 426 bHaveSeed = FALSE; |
| 427 } | 427 } |
| 428 FX_DWORD mti; | 428 FX_DWORD mti; |
| 429 FX_BOOL bHaveSeed; | 429 FX_BOOL bHaveSeed; |
| 430 FX_DWORD mt[MT_N]; | 430 FX_DWORD mt[MT_N]; |
| 431 } FX_MTRANDOMCONTEXT, * FX_LPMTRANDOMCONTEXT; | 431 } FX_MTRANDOMCONTEXT, * FX_LPMTRANDOMCONTEXT; |
| 432 typedef FX_MTRANDOMCONTEXT const * FX_LPCMTRANDOMCONTEXT; | 432 typedef FX_MTRANDOMCONTEXT const * FX_LPCMTRANDOMCONTEXT; |
| 433 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ | 433 #if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_ |
| 434 FX_BOOL FX_GenerateCryptoRandom(FX_LPDWORD pBuffer, FX_INT32 iCount); | 434 FX_BOOL FX_GenerateCryptoRandom(FX_LPDWORD pBuffer, int32_t iCount); |
| 435 #endif | 435 #endif |
| 436 #ifdef __cplusplus | 436 #ifdef __cplusplus |
| 437 } | 437 } |
| 438 #endif | 438 #endif |
| 439 | 439 |
| 440 #endif // CORE_SRC_FXCRT_EXTENSION_H_ | 440 #endif // CORE_SRC_FXCRT_EXTENSION_H_ |
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