diff options
Diffstat (limited to 'core/src/fxcrt/fx_extension.cpp')
| -rw-r--r-- | core/src/fxcrt/fx_extension.cpp | 401 |
1 files changed, 401 insertions, 0 deletions
diff --git a/core/src/fxcrt/fx_extension.cpp b/core/src/fxcrt/fx_extension.cpp new file mode 100644 index 0000000000..79d300668f --- /dev/null +++ b/core/src/fxcrt/fx_extension.cpp @@ -0,0 +1,401 @@ +// Copyright 2014 PDFium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
+
+#include "../../include/fxcrt/fx_ext.h"
+#include "extension.h"
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+#include <wincrypt.h>
+#else
+#include <ctime>
+#endif
+FX_HFILE FX_File_Open(FX_BSTR fileName, FX_DWORD dwMode, IFX_Allocator* pAllocator)
+{
+ IFXCRT_FileAccess* pFA = FXCRT_FileAccess_Create(pAllocator);
+ if (pFA && !pFA->Open(fileName, dwMode)) {
+ pFA->Release(pAllocator);
+ return NULL;
+ }
+ return (FX_HFILE)pFA;
+}
+FX_HFILE FX_File_Open(FX_WSTR fileName, FX_DWORD dwMode, IFX_Allocator* pAllocator)
+{
+ IFXCRT_FileAccess* pFA = FXCRT_FileAccess_Create(pAllocator);
+ if (pFA && !pFA->Open(fileName, dwMode)) {
+ pFA->Release(pAllocator);
+ return NULL;
+ }
+ return (FX_HFILE)pFA;
+}
+void FX_File_Close(FX_HFILE hFile, IFX_Allocator* pAllocator)
+{
+ FXSYS_assert(hFile != NULL);
+ ((IFXCRT_FileAccess*)hFile)->Close();
+ ((IFXCRT_FileAccess*)hFile)->Release(pAllocator);
+}
+FX_FILESIZE FX_File_GetSize(FX_HFILE hFile)
+{
+ FXSYS_assert(hFile != NULL);
+ return ((IFXCRT_FileAccess*)hFile)->GetSize();
+}
+FX_FILESIZE FX_File_GetPosition(FX_HFILE hFile)
+{
+ FXSYS_assert(hFile != NULL);
+ return ((IFXCRT_FileAccess*)hFile)->GetPosition();
+}
+FX_FILESIZE FX_File_SetPosition(FX_HFILE hFile, FX_FILESIZE pos)
+{
+ FXSYS_assert(hFile != NULL);
+ return ((IFXCRT_FileAccess*)hFile)->SetPosition(pos);
+}
+size_t FX_File_Read(FX_HFILE hFile, void* pBuffer, size_t szBuffer)
+{
+ FXSYS_assert(hFile != NULL);
+ return ((IFXCRT_FileAccess*)hFile)->Read(pBuffer, szBuffer);
+}
+size_t FX_File_ReadPos(FX_HFILE hFile, void* pBuffer, size_t szBuffer, FX_FILESIZE pos)
+{
+ FXSYS_assert(hFile != NULL);
+ return ((IFXCRT_FileAccess*)hFile)->ReadPos(pBuffer, szBuffer, pos);
+}
+size_t FX_File_Write(FX_HFILE hFile, const void* pBuffer, size_t szBuffer)
+{
+ FXSYS_assert(hFile != NULL);
+ return ((IFXCRT_FileAccess*)hFile)->Write(pBuffer, szBuffer);
+}
+size_t FX_File_WritePos(FX_HFILE hFile, const void* pBuffer, size_t szBuffer, FX_FILESIZE pos)
+{
+ FXSYS_assert(hFile != NULL);
+ return ((IFXCRT_FileAccess*)hFile)->WritePos(pBuffer, szBuffer, pos);
+}
+FX_BOOL FX_File_Flush(FX_HFILE hFile)
+{
+ FXSYS_assert(hFile != NULL);
+ return ((IFXCRT_FileAccess*)hFile)->Flush();
+}
+FX_BOOL FX_File_Truncate(FX_HFILE hFile, FX_FILESIZE szFile)
+{
+ FXSYS_assert(hFile != NULL);
+ return ((IFXCRT_FileAccess*)hFile)->Truncate(szFile);
+}
+IFX_FileStream* FX_CreateFileStream(FX_LPCSTR filename, FX_DWORD dwModes, IFX_Allocator* pAllocator)
+{
+ IFXCRT_FileAccess* pFA = FXCRT_FileAccess_Create(pAllocator);
+ if (!pFA) {
+ return NULL;
+ }
+ if (!pFA->Open(filename, dwModes)) {
+ pFA->Release(pAllocator);
+ return NULL;
+ }
+ if (pAllocator) {
+ return FX_NewAtAllocator(pAllocator) CFX_CRTFileStream(pFA, pAllocator);
+ } else {
+ return FX_NEW CFX_CRTFileStream(pFA, pAllocator);
+ }
+}
+IFX_FileStream* FX_CreateFileStream(FX_LPCWSTR filename, FX_DWORD dwModes, IFX_Allocator* pAllocator)
+{
+ IFXCRT_FileAccess* pFA = FXCRT_FileAccess_Create(pAllocator);
+ if (!pFA) {
+ return NULL;
+ }
+ if (!pFA->Open(filename, dwModes)) {
+ pFA->Release(pAllocator);
+ return NULL;
+ }
+ if (pAllocator) {
+ return FX_NewAtAllocator(pAllocator) CFX_CRTFileStream(pFA, pAllocator);
+ } else {
+ return FX_NEW CFX_CRTFileStream(pFA, pAllocator);
+ }
+}
+IFX_FileWrite* FX_CreateFileWrite(FX_LPCSTR filename, IFX_Allocator* pAllocator)
+{
+ return FX_CreateFileStream(filename, FX_FILEMODE_Truncate, pAllocator);
+}
+IFX_FileWrite* FX_CreateFileWrite(FX_LPCWSTR filename, IFX_Allocator* pAllocator)
+{
+ return FX_CreateFileStream(filename, FX_FILEMODE_Truncate, pAllocator);
+}
+IFX_FileRead* FX_CreateFileRead(FX_LPCSTR filename, IFX_Allocator* pAllocator)
+{
+ return FX_CreateFileStream(filename, FX_FILEMODE_ReadOnly, pAllocator);
+}
+IFX_FileRead* FX_CreateFileRead(FX_LPCWSTR filename, IFX_Allocator* pAllocator)
+{
+ return FX_CreateFileStream(filename, FX_FILEMODE_ReadOnly, pAllocator);
+}
+IFX_MemoryStream* FX_CreateMemoryStream(FX_LPBYTE pBuffer, size_t dwSize, FX_BOOL bTakeOver, IFX_Allocator* pAllocator)
+{
+ if (pAllocator) {
+ return FX_NewAtAllocator(pAllocator)CFX_MemoryStream(pBuffer, dwSize, bTakeOver, pAllocator);
+ } else {
+ return FX_NEW CFX_MemoryStream(pBuffer, dwSize, bTakeOver, NULL);
+ }
+}
+IFX_MemoryStream* FX_CreateMemoryStream(FX_BOOL bConsecutive, IFX_Allocator* pAllocator)
+{
+ if (pAllocator) {
+ return FX_NewAtAllocator(pAllocator)CFX_MemoryStream(bConsecutive, pAllocator);
+ } else {
+ return FX_NEW CFX_MemoryStream(bConsecutive, NULL);
+ }
+}
+#ifdef __cplusplus
+extern "C" {
+#endif
+FX_FLOAT FXSYS_tan(FX_FLOAT a)
+{
+ return (FX_FLOAT)tan(a);
+}
+FX_FLOAT FXSYS_logb(FX_FLOAT b, FX_FLOAT x)
+{
+ return FXSYS_log(x) / FXSYS_log(b);
+}
+FX_FLOAT FXSYS_strtof(FX_LPCSTR pcsStr, FX_INT32 iLength, FX_INT32 *pUsedLen)
+{
+ FXSYS_assert(pcsStr != NULL);
+ if (iLength < 0) {
+ iLength = (FX_INT32)FXSYS_strlen(pcsStr);
+ }
+ CFX_WideString ws = CFX_WideString::FromLocal(pcsStr, iLength);
+ return FXSYS_wcstof((FX_LPCWSTR)ws, iLength, pUsedLen);
+}
+FX_FLOAT FXSYS_wcstof(FX_LPCWSTR pwsStr, FX_INT32 iLength, FX_INT32 *pUsedLen)
+{
+ FXSYS_assert(pwsStr != NULL);
+ if (iLength < 0) {
+ iLength = (FX_INT32)FXSYS_wcslen(pwsStr);
+ }
+ if (iLength == 0) {
+ return 0.0f;
+ }
+ FX_INT32 iUsedLen = 0;
+ FX_BOOL bNegtive = FALSE;
+ switch (pwsStr[iUsedLen]) {
+ case '-':
+ bNegtive = TRUE;
+ case '+':
+ iUsedLen++;
+ break;
+ }
+ FX_FLOAT fValue = 0.0f;
+ while (iUsedLen < iLength) {
+ FX_WCHAR wch = pwsStr[iUsedLen];
+ if (wch >= L'0' && wch <= L'9') {
+ fValue = fValue * 10.0f + (wch - L'0');
+ } else {
+ break;
+ }
+ iUsedLen++;
+ }
+ if (iUsedLen < iLength && pwsStr[iUsedLen] == L'.') {
+ FX_FLOAT fPrecise = 0.1f;
+ while (++iUsedLen < iLength) {
+ FX_WCHAR wch = pwsStr[iUsedLen];
+ if (wch >= L'0' && wch <= L'9') {
+ fValue += (wch - L'0') * fPrecise;
+ fPrecise *= 0.1f;
+ } else {
+ break;
+ }
+ }
+ }
+ if (pUsedLen) {
+ *pUsedLen = iUsedLen;
+ }
+ return bNegtive ? -fValue : fValue;
+}
+FX_LPWSTR FXSYS_wcsncpy(FX_LPWSTR dstStr, FX_LPCWSTR srcStr, size_t count)
+{
+ FXSYS_assert(dstStr != NULL && srcStr != NULL && count > 0);
+ for (size_t i = 0; i < count; ++i)
+ if ((dstStr[i] = srcStr[i]) == L'\0') {
+ break;
+ }
+ return dstStr;
+}
+FX_INT32 FXSYS_wcsnicmp(FX_LPCWSTR s1, FX_LPCWSTR s2, size_t count)
+{
+ FXSYS_assert(s1 != NULL && s2 != NULL && count > 0);
+ FX_WCHAR wch1 = 0, wch2 = 0;
+ while (count-- > 0) {
+ wch1 = (FX_WCHAR)FXSYS_tolower(*s1++);
+ wch2 = (FX_WCHAR)FXSYS_tolower(*s2++);
+ if (wch1 != wch2) {
+ break;
+ }
+ }
+ return wch1 - wch2;
+}
+FX_INT32 FXSYS_strnicmp(FX_LPCSTR s1, FX_LPCSTR s2, size_t count)
+{
+ FXSYS_assert(s1 != NULL && s2 != NULL && count > 0);
+ FX_CHAR ch1 = 0, ch2 = 0;
+ while (count-- > 0) {
+ ch1 = (FX_CHAR)FXSYS_tolower(*s1++);
+ ch2 = (FX_CHAR)FXSYS_tolower(*s2++);
+ if (ch1 != ch2) {
+ break;
+ }
+ }
+ return ch1 - ch2;
+}
+FX_DWORD FX_HashCode_String_GetA(FX_LPCSTR pStr, FX_INT32 iLength, FX_BOOL bIgnoreCase)
+{
+ FXSYS_assert(pStr != NULL);
+ if (iLength < 0) {
+ iLength = (FX_INT32)FXSYS_strlen(pStr);
+ }
+ FX_LPCSTR pStrEnd = pStr + iLength;
+ FX_DWORD dwHashCode = 0;
+ if (bIgnoreCase) {
+ while (pStr < pStrEnd) {
+ dwHashCode = 31 * dwHashCode + FXSYS_tolower(*pStr++);
+ }
+ } else {
+ while (pStr < pStrEnd) {
+ dwHashCode = 31 * dwHashCode + *pStr ++;
+ }
+ }
+ return dwHashCode;
+}
+FX_DWORD FX_HashCode_String_GetW(FX_LPCWSTR pStr, FX_INT32 iLength, FX_BOOL bIgnoreCase)
+{
+ FXSYS_assert(pStr != NULL);
+ if (iLength < 0) {
+ iLength = (FX_INT32)FXSYS_wcslen(pStr);
+ }
+ FX_LPCWSTR pStrEnd = pStr + iLength;
+ FX_DWORD dwHashCode = 0;
+ if (bIgnoreCase) {
+ while (pStr < pStrEnd) {
+ dwHashCode = 1313 * dwHashCode + FXSYS_tolower(*pStr++);
+ }
+ } else {
+ while (pStr < pStrEnd) {
+ dwHashCode = 1313 * dwHashCode + *pStr ++;
+ }
+ }
+ return dwHashCode;
+}
+#ifdef __cplusplus
+}
+#endif
+#ifdef __cplusplus
+extern "C" {
+#endif
+FX_LPVOID FX_Random_MT_Start(FX_DWORD dwSeed)
+{
+ FX_LPMTRANDOMCONTEXT pContext = FX_Alloc(FX_MTRANDOMCONTEXT, 1);
+ if (!pContext) {
+ return NULL;
+ }
+ pContext->mt[0] = dwSeed;
+ FX_DWORD &i = pContext->mti;
+ FX_LPDWORD pBuf = pContext->mt;
+ for (i = 1; i < MT_N; i ++) {
+ pBuf[i] = (1812433253UL * (pBuf[i - 1] ^ (pBuf[i - 1] >> 30)) + i);
+ }
+ pContext->bHaveSeed = TRUE;
+ return pContext;
+}
+FX_DWORD FX_Random_MT_Generate(FX_LPVOID pContext)
+{
+ FXSYS_assert(pContext != NULL);
+ FX_LPMTRANDOMCONTEXT pMTC = (FX_LPMTRANDOMCONTEXT)pContext;
+ FX_DWORD v;
+ static FX_DWORD mag[2] = {0, MT_Matrix_A};
+ FX_DWORD &mti = pMTC->mti;
+ FX_LPDWORD pBuf = pMTC->mt;
+ if ((int)mti < 0 || mti >= MT_N) {
+ if (mti > MT_N && !pMTC->bHaveSeed) {
+ return 0;
+ }
+ FX_DWORD kk;
+ for (kk = 0; kk < MT_N - MT_M; kk ++) {
+ v = (pBuf[kk] & MT_Upper_Mask) | (pBuf[kk + 1] & MT_Lower_Mask);
+ pBuf[kk] = pBuf[kk + MT_M] ^ (v >> 1) ^ mag[v & 1];
+ }
+ for (; kk < MT_N - 1; kk ++) {
+ v = (pBuf[kk] & MT_Upper_Mask) | (pBuf[kk + 1] & MT_Lower_Mask);
+ pBuf[kk] = pBuf[kk + (MT_M - MT_N)] ^ (v >> 1) ^ mag[v & 1];
+ }
+ v = (pBuf[MT_N - 1] & MT_Upper_Mask) | (pBuf[0] & MT_Lower_Mask);
+ pBuf[MT_N - 1] = pBuf[MT_M - 1] ^ (v >> 1) ^ mag[v & 1];
+ mti = 0;
+ }
+ v = pBuf[mti ++];
+ v ^= (v >> 11);
+ v ^= (v << 7) & 0x9d2c5680UL;
+ v ^= (v << 15) & 0xefc60000UL;
+ v ^= (v >> 18);
+ return v;
+}
+void FX_Random_MT_Close(FX_LPVOID pContext)
+{
+ FXSYS_assert(pContext != NULL);
+ FX_Free(pContext);
+}
+void FX_Random_GenerateMT(FX_LPDWORD pBuffer, FX_INT32 iCount)
+{
+ FX_DWORD dwSeed;
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+ if (!FX_GenerateCryptoRandom(&dwSeed, 1)) {
+ FX_Random_GenerateBase(&dwSeed, 1);
+ }
+#else
+ FX_Random_GenerateBase(&dwSeed, 1);
+#endif
+ FX_LPVOID pContext = FX_Random_MT_Start(dwSeed);
+ while (iCount -- > 0) {
+ *pBuffer ++ = FX_Random_MT_Generate(pContext);
+ }
+ FX_Random_MT_Close(pContext);
+}
+void FX_Random_GenerateBase(FX_LPDWORD pBuffer, FX_INT32 iCount)
+{
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+ SYSTEMTIME st1, st2;
+ ::GetSystemTime(&st1);
+ do {
+ ::GetSystemTime(&st2);
+ } while (FXSYS_memcmp32(&st1, &st2, sizeof(SYSTEMTIME)) == 0);
+ FX_DWORD dwHash1 = FX_HashCode_String_GetA((FX_LPCSTR)&st1, sizeof(st1), TRUE);
+ FX_DWORD dwHash2 = FX_HashCode_String_GetA((FX_LPCSTR)&st2, sizeof(st2), TRUE);
+ ::srand((dwHash1 << 16) | (FX_DWORD)dwHash2);
+#else
+ time_t tmLast = time(NULL), tmCur;
+ while ((tmCur = time(NULL)) == tmLast);
+ ::srand((tmCur << 16) | (tmLast & 0xFFFF));
+#endif
+ while (iCount -- > 0) {
+ *pBuffer ++ = (FX_DWORD)((::rand() << 16) | (::rand() & 0xFFFF));
+ }
+}
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+FX_BOOL FX_GenerateCryptoRandom(FX_LPDWORD pBuffer, FX_INT32 iCount)
+{
+ HCRYPTPROV hCP = NULL;
+ if (!::CryptAcquireContext(&hCP, NULL, NULL, PROV_RSA_FULL, 0) || hCP == NULL) {
+ return FALSE;
+ }
+ ::CryptGenRandom(hCP, iCount * sizeof(FX_DWORD), (FX_LPBYTE)pBuffer);
+ ::CryptReleaseContext(hCP, 0);
+ return TRUE;
+}
+#endif
+void FX_Random_GenerateCrypto(FX_LPDWORD pBuffer, FX_INT32 iCount)
+{
+#if _FXM_PLATFORM_ == _FXM_PLATFORM_WINDOWS_
+ FX_GenerateCryptoRandom(pBuffer, iCount);
+#else
+ FX_Random_GenerateBase(pBuffer, iCount);
+#endif
+}
+#ifdef __cplusplus
+}
+#endif
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