1 // Copyright 2014 PDFium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com 6 7 #ifndef CORE_FXCRT_FX_EXT_H_ 8 #define CORE_FXCRT_FX_EXT_H_ 9 10 #include <cctype> 11 #include <cwctype> 12 #include <memory> 13 14 #include "core/fxcrt/fx_basic.h" 15 16 #define FX_INVALID_OFFSET static_cast<uint32_t>(-1) 17 18 FX_FLOAT FXSYS_tan(FX_FLOAT a); 19 FX_FLOAT FXSYS_logb(FX_FLOAT b, FX_FLOAT x); 20 FX_FLOAT FXSYS_strtof(const FX_CHAR* pcsStr, 21 int32_t iLength = -1, 22 int32_t* pUsedLen = nullptr); 23 FX_FLOAT FXSYS_wcstof(const FX_WCHAR* pwsStr, 24 int32_t iLength = -1, 25 int32_t* pUsedLen = nullptr); 26 FX_WCHAR* FXSYS_wcsncpy(FX_WCHAR* dstStr, const FX_WCHAR* srcStr, size_t count); 27 int32_t FXSYS_wcsnicmp(const FX_WCHAR* s1, const FX_WCHAR* s2, size_t count); 28 int32_t FXSYS_strnicmp(const FX_CHAR* s1, const FX_CHAR* s2, size_t count); 29 30 inline bool FXSYS_islower(int32_t ch) { 31 return ch >= 'a' && ch <= 'z'; 32 } 33 inline bool FXSYS_isupper(int32_t ch) { 34 return ch >= 'A' && ch <= 'Z'; 35 } 36 inline int32_t FXSYS_tolower(int32_t ch) { 37 return ch < 'A' || ch > 'Z' ? ch : (ch + 0x20); 38 } 39 inline int32_t FXSYS_toupper(int32_t ch) { 40 return ch < 'a' || ch > 'z' ? ch : (ch - 0x20); 41 } 42 inline bool FXSYS_iswalpha(wchar_t wch) { 43 return (wch >= L'A' && wch <= L'Z') || (wch >= L'a' && wch <= L'z'); 44 } 45 inline bool FXSYS_iswdigit(wchar_t wch) { 46 return wch >= L'0' && wch <= L'9'; 47 } 48 inline bool FXSYS_iswalnum(wchar_t wch) { 49 return FXSYS_iswalpha(wch) || FXSYS_iswdigit(wch); 50 } 51 inline bool FXSYS_iswspace(FX_WCHAR c) { 52 return (c == 0x20) || (c == 0x0d) || (c == 0x0a) || (c == 0x09); 53 } 54 55 inline int FXSYS_toHexDigit(const FX_CHAR c) { 56 if (!std::isxdigit(c)) 57 return 0; 58 char upchar = std::toupper(c); 59 return upchar > '9' ? upchar - 'A' + 10 : upchar - '0'; 60 } 61 62 inline bool FXSYS_isDecimalDigit(const FX_CHAR c) { 63 return !!std::isdigit(c); 64 } 65 66 inline bool FXSYS_isDecimalDigit(const FX_WCHAR c) { 67 return !!std::iswdigit(c); 68 } 69 70 inline int FXSYS_toDecimalDigit(const FX_CHAR c) { 71 return std::isdigit(c) ? c - '0' : 0; 72 } 73 74 inline int FXSYS_toDecimalDigit(const FX_WCHAR c) { 75 return std::iswdigit(c) ? c - L'0' : 0; 76 } 77 78 FX_FLOAT FXSYS_FractionalScale(size_t scale_factor, int value); 79 int FXSYS_FractionalScaleCount(); 80 81 void* FX_Random_MT_Start(uint32_t dwSeed); 82 void FX_Random_MT_Close(void* pContext); 83 uint32_t FX_Random_MT_Generate(void* pContext); 84 void FX_Random_GenerateBase(uint32_t* pBuffer, int32_t iCount); 85 void FX_Random_GenerateMT(uint32_t* pBuffer, int32_t iCount); 86 void FX_Random_GenerateCrypto(uint32_t* pBuffer, int32_t iCount); 87 88 #ifdef PDF_ENABLE_XFA 89 struct FX_GUID { 90 uint32_t data1; 91 uint16_t data2; 92 uint16_t data3; 93 uint8_t data4[8]; 94 }; 95 void FX_GUID_CreateV4(FX_GUID* pGUID); 96 void FX_GUID_ToString(const FX_GUID* pGUID, 97 CFX_ByteString& bsStr, 98 bool bSeparator = true); 99 #endif // PDF_ENABLE_XFA 100 101 #endif // CORE_FXCRT_FX_EXT_H_ 102
