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| 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_INCLUDE_FXCRT_FX_EXT_H_ | |
| 8 #define CORE_INCLUDE_FXCRT_FX_EXT_H_ | |
| 9 | |
| 10 #include <cctype> | |
| 11 #include <cwctype> | |
| 12 | |
| 13 #include "core/include/fxcrt/fx_basic.h" | |
| 14 | |
| 15 // TODO(thestig) Using unique_ptr with ReleaseDeleter is still not ideal. | |
| 16 // Come up or wait for something better. This appears in this file rather | |
| 17 // than fx_stream.h due to include ordering restrictions. | |
| 18 using ScopedFileStream = | |
| 19 std::unique_ptr<IFX_FileStream, ReleaseDeleter<IFX_FileStream>>; | |
| 20 | |
| 21 FX_FLOAT FXSYS_tan(FX_FLOAT a); | |
| 22 FX_FLOAT FXSYS_logb(FX_FLOAT b, FX_FLOAT x); | |
| 23 FX_FLOAT FXSYS_strtof(const FX_CHAR* pcsStr, | |
| 24 int32_t iLength = -1, | |
| 25 int32_t* pUsedLen = NULL); | |
| 26 FX_FLOAT FXSYS_wcstof(const FX_WCHAR* pwsStr, | |
| 27 int32_t iLength = -1, | |
| 28 int32_t* pUsedLen = NULL); | |
| 29 FX_WCHAR* FXSYS_wcsncpy(FX_WCHAR* dstStr, const FX_WCHAR* srcStr, size_t count); | |
| 30 int32_t FXSYS_wcsnicmp(const FX_WCHAR* s1, const FX_WCHAR* s2, size_t count); | |
| 31 int32_t FXSYS_strnicmp(const FX_CHAR* s1, const FX_CHAR* s2, size_t count); | |
| 32 | |
| 33 inline bool FXSYS_islower(int32_t ch) { | |
| 34 return ch >= 'a' && ch <= 'z'; | |
| 35 } | |
| 36 inline bool FXSYS_isupper(int32_t ch) { | |
| 37 return ch >= 'A' && ch <= 'Z'; | |
| 38 } | |
| 39 inline int32_t FXSYS_tolower(int32_t ch) { | |
| 40 return ch < 'A' || ch > 'Z' ? ch : (ch + 0x20); | |
| 41 } | |
| 42 inline int32_t FXSYS_toupper(int32_t ch) { | |
| 43 return ch < 'a' || ch > 'z' ? ch : (ch - 0x20); | |
| 44 } | |
| 45 inline bool FXSYS_iswalpha(wchar_t wch) { | |
| 46 return (wch >= L'A' && wch <= L'Z') || (wch >= L'a' && wch <= L'z'); | |
| 47 } | |
| 48 inline bool FXSYS_iswdigit(wchar_t wch) { | |
| 49 return wch >= L'0' && wch <= L'9'; | |
| 50 } | |
| 51 inline bool FXSYS_iswalnum(wchar_t wch) { | |
| 52 return FXSYS_iswalpha(wch) || FXSYS_iswdigit(wch); | |
| 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_DWORD FX_HashCode_String_GetA(const FX_CHAR* pStr, | |
| 79 int32_t iLength, | |
| 80 FX_BOOL bIgnoreCase = FALSE); | |
| 81 FX_DWORD FX_HashCode_String_GetW(const FX_WCHAR* pStr, | |
| 82 int32_t iLength, | |
| 83 FX_BOOL bIgnoreCase = FALSE); | |
| 84 | |
| 85 void* FX_Random_MT_Start(FX_DWORD dwSeed); | |
| 86 | |
| 87 FX_DWORD FX_Random_MT_Generate(void* pContext); | |
| 88 | |
| 89 void FX_Random_MT_Close(void* pContext); | |
| 90 | |
| 91 void FX_Random_GenerateBase(FX_DWORD* pBuffer, int32_t iCount); | |
| 92 | |
| 93 void FX_Random_GenerateMT(FX_DWORD* pBuffer, int32_t iCount); | |
| 94 | |
| 95 void FX_Random_GenerateCrypto(FX_DWORD* pBuffer, int32_t iCount); | |
| 96 | |
| 97 #ifdef PDF_ENABLE_XFA | |
| 98 typedef struct FX_GUID { | |
| 99 FX_DWORD data1; | |
| 100 uint16_t data2; | |
| 101 uint16_t data3; | |
| 102 uint8_t data4[8]; | |
| 103 } FX_GUID, *FX_LPGUID; | |
| 104 typedef FX_GUID const* FX_LPCGUID; | |
| 105 void FX_GUID_CreateV4(FX_LPGUID pGUID); | |
| 106 void FX_GUID_ToString(FX_LPCGUID pGUID, | |
| 107 CFX_ByteString& bsStr, | |
| 108 FX_BOOL bSeparator = TRUE); | |
| 109 #endif // PDF_ENABLE_XFA | |
| 110 | |
| 111 template <class baseType> | |
| 112 class CFX_SSortTemplate { | |
| 113 public: | |
| 114 void ShellSort(baseType* pArray, int32_t iCount) { | |
| 115 FXSYS_assert(pArray && iCount > 0); | |
| 116 int32_t i, j, gap; | |
| 117 baseType v1, v2; | |
| 118 gap = iCount >> 1; | |
| 119 while (gap > 0) { | |
| 120 for (i = gap; i < iCount; i++) { | |
| 121 j = i - gap; | |
| 122 v1 = pArray[i]; | |
| 123 while (j > -1 && (v2 = pArray[j]) > v1) { | |
| 124 pArray[j + gap] = v2; | |
| 125 j -= gap; | |
| 126 } | |
| 127 pArray[j + gap] = v1; | |
| 128 } | |
| 129 gap >>= 1; | |
| 130 } | |
| 131 } | |
| 132 }; | |
| 133 | |
| 134 #endif // CORE_INCLUDE_FXCRT_FX_EXT_H_ | |
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