// 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 |