Initial commit.

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