// 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 "xfa/src/fgas/src/fgas_base.h" | |
#ifdef __cplusplus | |
extern "C" { | |
#endif | |
const static FX_CHAR g_FXBase64EncoderMap[64] = { | |
'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', | |
'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', | |
'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', | |
'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', | |
'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '+', '/', | |
}; | |
typedef struct _FX_BASE64DATA { | |
FX_DWORD data1 : 2; | |
FX_DWORD data2 : 6; | |
FX_DWORD data3 : 4; | |
FX_DWORD data4 : 4; | |
FX_DWORD data5 : 6; | |
FX_DWORD data6 : 2; | |
FX_DWORD data7 : 8; | |
} FX_BASE64DATA, *FX_LPBASE64ENCODEDATA; | |
typedef FX_BASE64DATA const* FX_LPCBASE64DATA; | |
static void FX_Base64EncodePiece(const FX_BASE64DATA& src, | |
int32_t iBytes, | |
FX_CHAR dst[4]) { | |
dst[0] = g_FXBase64EncoderMap[src.data2]; | |
FX_DWORD b = src.data1 << 4; | |
if (iBytes > 1) { | |
b |= src.data4; | |
} | |
dst[1] = g_FXBase64EncoderMap[b]; | |
if (iBytes > 1) { | |
b = src.data3 << 2; | |
if (iBytes > 2) { | |
b |= src.data6; | |
} | |
dst[2] = g_FXBase64EncoderMap[b]; | |
if (iBytes > 2) { | |
dst[3] = g_FXBase64EncoderMap[src.data5]; | |
} else { | |
dst[3] = '='; | |
} | |
} else { | |
dst[2] = dst[3] = '='; | |
} | |
} | |
int32_t FX_Base64EncodeA(const uint8_t* pSrc, int32_t iSrcLen, FX_CHAR* pDst) { | |
FXSYS_assert(pSrc != NULL); | |
if (iSrcLen < 1) { | |
return 0; | |
} | |
if (pDst == NULL) { | |
int32_t iDstLen = iSrcLen / 3 * 4; | |
if ((iSrcLen % 3) != 0) { | |
iDstLen += 4; | |
} | |
return iDstLen; | |
} | |
FX_BASE64DATA srcData; | |
int32_t iBytes = 3; | |
FX_CHAR* pDstEnd = pDst; | |
while (iSrcLen > 0) { | |
if (iSrcLen > 2) { | |
((uint8_t*)&srcData)[0] = *pSrc++; | |
((uint8_t*)&srcData)[1] = *pSrc++; | |
((uint8_t*)&srcData)[2] = *pSrc++; | |
iSrcLen -= 3; | |
} else { | |
*((FX_DWORD*)&srcData) = 0; | |
((uint8_t*)&srcData)[0] = *pSrc++; | |
if (iSrcLen > 1) { | |
((uint8_t*)&srcData)[1] = *pSrc++; | |
} | |
iBytes = iSrcLen; | |
iSrcLen = 0; | |
} | |
FX_Base64EncodePiece(srcData, iBytes, pDstEnd); | |
pDstEnd += 4; | |
} | |
return pDstEnd - pDst; | |
} | |
const static uint8_t g_FXBase64DecoderMap[256] = { | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x3E, 0xFF, 0xFF, 0xFF, 0x3F, | |
0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3A, 0x3B, 0x3C, 0x3D, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, | |
0x07, 0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F, 0x10, 0x11, 0x12, | |
0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F, 0x20, 0x21, 0x22, 0x23, 0x24, | |
0x25, 0x26, 0x27, 0x28, 0x29, 0x2A, 0x2B, 0x2C, 0x2D, 0x2E, 0x2F, 0x30, | |
0x31, 0x32, 0x33, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, | |
0xFF, 0xFF, 0xFF, 0xFF, | |
}; | |
static void FX_Base64DecodePiece(const FX_CHAR src[4], | |
int32_t iChars, | |
FX_BASE64DATA& dst, | |
int32_t& iBytes) { | |
FXSYS_assert(iChars > 0 && iChars < 5); | |
iBytes = 1; | |
dst.data2 = g_FXBase64DecoderMap[(uint8_t)src[0]]; | |
if (iChars > 1) { | |
uint8_t b = g_FXBase64DecoderMap[(uint8_t)src[1]]; | |
dst.data1 = b >> 4; | |
dst.data4 = b; | |
if (iChars > 2) { | |
iBytes = 2; | |
b = g_FXBase64DecoderMap[(uint8_t)src[2]]; | |
dst.data3 = b >> 2; | |
dst.data6 = b; | |
if (iChars > 3) { | |
iBytes = 3; | |
dst.data5 = g_FXBase64DecoderMap[(uint8_t)src[3]]; | |
} else { | |
dst.data5 = 0; | |
} | |
} else { | |
dst.data3 = 0; | |
} | |
} else { | |
dst.data1 = 0; | |
} | |
} | |
int32_t FX_Base64DecodeA(const FX_CHAR* pSrc, int32_t iSrcLen, uint8_t* pDst) { | |
FXSYS_assert(pSrc != NULL); | |
if (iSrcLen < 1) { | |
return 0; | |
} | |
while (iSrcLen > 0 && pSrc[iSrcLen - 1] == '=') { | |
iSrcLen--; | |
} | |
if (iSrcLen < 1) { | |
return 0; | |
} | |
if (pDst == NULL) { | |
int32_t iDstLen = iSrcLen / 4 * 3; | |
iSrcLen %= 4; | |
if (iSrcLen == 1) { | |
iDstLen += 1; | |
} else if (iSrcLen == 2) { | |
iDstLen += 1; | |
} else if (iSrcLen == 3) { | |
iDstLen += 2; | |
} | |
return iDstLen; | |
} | |
FX_CHAR srcData[4]; | |
FX_BASE64DATA dstData; | |
int32_t iChars = 4, iBytes; | |
uint8_t* pDstEnd = pDst; | |
while (iSrcLen > 0) { | |
if (iSrcLen > 3) { | |
*((FX_DWORD*)srcData) = *((FX_DWORD*)pSrc); | |
pSrc += 4; | |
iSrcLen -= 4; | |
} else { | |
*((FX_DWORD*)&dstData) = 0; | |
*((FX_DWORD*)srcData) = 0; | |
srcData[0] = *pSrc++; | |
if (iSrcLen > 1) { | |
srcData[1] = *pSrc++; | |
} | |
if (iSrcLen > 2) { | |
srcData[2] = *pSrc++; | |
} | |
iChars = iSrcLen; | |
iSrcLen = 0; | |
} | |
FX_Base64DecodePiece(srcData, iChars, dstData, iBytes); | |
*pDstEnd++ = ((uint8_t*)&dstData)[0]; | |
if (iBytes > 1) { | |
*pDstEnd++ = ((uint8_t*)&dstData)[1]; | |
} | |
if (iBytes > 2) { | |
*pDstEnd++ = ((uint8_t*)&dstData)[2]; | |
} | |
} | |
return pDstEnd - pDst; | |
} | |
int32_t FX_Base64DecodeW(const FX_WCHAR* pSrc, int32_t iSrcLen, uint8_t* pDst) { | |
FXSYS_assert(pSrc != NULL); | |
if (iSrcLen < 1) { | |
return 0; | |
} | |
while (iSrcLen > 0 && pSrc[iSrcLen - 1] == '=') { | |
iSrcLen--; | |
} | |
if (iSrcLen < 1) { | |
return 0; | |
} | |
if (pDst == NULL) { | |
int32_t iDstLen = iSrcLen / 4 * 3; | |
iSrcLen %= 4; | |
if (iSrcLen == 1) { | |
iDstLen += 1; | |
} else if (iSrcLen == 2) { | |
iDstLen += 1; | |
} else if (iSrcLen == 3) { | |
iDstLen += 2; | |
} | |
return iDstLen; | |
} | |
FX_CHAR srcData[4]; | |
FX_BASE64DATA dstData; | |
int32_t iChars = 4, iBytes; | |
uint8_t* pDstEnd = pDst; | |
while (iSrcLen > 0) { | |
if (iSrcLen > 3) { | |
srcData[0] = (FX_CHAR)*pSrc++; | |
srcData[1] = (FX_CHAR)*pSrc++; | |
srcData[2] = (FX_CHAR)*pSrc++; | |
srcData[3] = (FX_CHAR)*pSrc++; | |
iSrcLen -= 4; | |
} else { | |
*((FX_DWORD*)&dstData) = 0; | |
*((FX_DWORD*)srcData) = 0; | |
srcData[0] = (FX_CHAR)*pSrc++; | |
if (iSrcLen > 1) { | |
srcData[1] = (FX_CHAR)*pSrc++; | |
} | |
if (iSrcLen > 2) { | |
srcData[2] = (FX_CHAR)*pSrc++; | |
} | |
iChars = iSrcLen; | |
iSrcLen = 0; | |
} | |
FX_Base64DecodePiece(srcData, iChars, dstData, iBytes); | |
*pDstEnd++ = ((uint8_t*)&dstData)[0]; | |
if (iBytes > 1) { | |
*pDstEnd++ = ((uint8_t*)&dstData)[1]; | |
} | |
if (iBytes > 2) { | |
*pDstEnd++ = ((uint8_t*)&dstData)[2]; | |
} | |
} | |
return pDstEnd - pDst; | |
} | |
const static uint8_t g_FXHex2DecMap[256] = { | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, 0, | |
0, 0, 0, 0, 0, 10, 11, 12, 13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 11, 12, | |
13, 14, 15, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, | |
}; | |
uint8_t FX_Hex2Dec(uint8_t hexHigh, uint8_t hexLow) { | |
return (g_FXHex2DecMap[hexHigh] << 4) + g_FXHex2DecMap[hexLow]; | |
} | |
int32_t FX_SeparateStringW(const FX_WCHAR* pStr, | |
int32_t iStrLen, | |
FX_WCHAR delimiter, | |
CFX_WideStringArray& pieces) { | |
if (pStr == NULL) { | |
return 0; | |
} | |
if (iStrLen < 0) { | |
iStrLen = FXSYS_wcslen(pStr); | |
} | |
const FX_WCHAR* pToken = pStr; | |
const FX_WCHAR* pEnd = pStr + iStrLen; | |
while (TRUE) { | |
if (pStr >= pEnd || delimiter == *pStr) { | |
CFX_WideString sub(pToken, pStr - pToken); | |
pieces.Add(sub); | |
pToken = pStr + 1; | |
if (pStr >= pEnd) { | |
break; | |
} | |
} | |
pStr++; | |
} | |
return pieces.GetSize(); | |
} | |
#ifdef __cplusplus | |
}; | |
#endif |