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 FX_FLOAT FXSYS_tan(FX_FLOAT a);
16 FX_FLOAT FXSYS_logb(FX_FLOAT b, FX_FLOAT x);
17 FX_FLOAT FXSYS_strtof(const FX_CHAR* pcsStr,
18 int32_t iLength = -1,
19 int32_t* pUsedLen = NULL);
20 FX_FLOAT FXSYS_wcstof(const FX_WCHAR* pwsStr,
21 int32_t iLength = -1,
22 int32_t* pUsedLen = NULL);
23 FX_WCHAR* FXSYS_wcsncpy(FX_WCHAR* dstStr, const FX_WCHAR* srcStr, size_t count);
24 int32_t FXSYS_wcsnicmp(const FX_WCHAR* s1, const FX_WCHAR* s2, size_t count);
25 int32_t FXSYS_strnicmp(const FX_CHAR* s1, const FX_CHAR* s2, size_t count);
26
FXSYS_islower(int32_t ch)27 inline FX_BOOL FXSYS_islower(int32_t ch) {
28 return ch >= 'a' && ch <= 'z';
29 }
FXSYS_isupper(int32_t ch)30 inline FX_BOOL FXSYS_isupper(int32_t ch) {
31 return ch >= 'A' && ch <= 'Z';
32 }
FXSYS_tolower(int32_t ch)33 inline int32_t FXSYS_tolower(int32_t ch) {
34 return ch < 'A' || ch > 'Z' ? ch : (ch + 0x20);
35 }
FXSYS_toupper(int32_t ch)36 inline int32_t FXSYS_toupper(int32_t ch) {
37 return ch < 'a' || ch > 'z' ? ch : (ch - 0x20);
38 }
FXSYS_iswalpha(wchar_t wch)39 inline FX_BOOL FXSYS_iswalpha(wchar_t wch) {
40 return (wch >= L'A' && wch <= L'Z') || (wch >= L'a' && wch <= L'z');
41 }
FXSYS_iswdigit(wchar_t wch)42 inline FX_BOOL FXSYS_iswdigit(wchar_t wch) {
43 return wch >= L'0' && wch <= L'9';
44 }
FXSYS_iswalnum(wchar_t wch)45 inline FX_BOOL FXSYS_iswalnum(wchar_t wch) {
46 return FXSYS_iswalpha(wch) || FXSYS_iswdigit(wch);
47 }
48
FXSYS_toHexDigit(const FX_CHAR c)49 inline int FXSYS_toHexDigit(const FX_CHAR c) {
50 if (!std::isxdigit(c))
51 return 0;
52 char upchar = std::toupper(c);
53 return upchar > '9' ? upchar - 'A' + 10 : upchar - '0';
54 }
55
FXSYS_toDecimalDigit(const FX_CHAR c)56 inline int FXSYS_toDecimalDigit(const FX_CHAR c) {
57 if (!std::isdigit(c))
58 return 0;
59 return c - '0';
60 }
61
FXSYS_toDecimalDigitWide(const FX_WCHAR c)62 inline int FXSYS_toDecimalDigitWide(const FX_WCHAR c) {
63 if (!std::iswdigit(c))
64 return 0;
65 return c - L'0';
66 }
67
68 FX_DWORD FX_HashCode_String_GetA(const FX_CHAR* pStr,
69 int32_t iLength,
70 FX_BOOL bIgnoreCase = FALSE);
71 FX_DWORD FX_HashCode_String_GetW(const FX_WCHAR* pStr,
72 int32_t iLength,
73 FX_BOOL bIgnoreCase = FALSE);
74
75 void* FX_Random_MT_Start(FX_DWORD dwSeed);
76
77 FX_DWORD FX_Random_MT_Generate(void* pContext);
78
79 void FX_Random_MT_Close(void* pContext);
80
81 void FX_Random_GenerateBase(FX_DWORD* pBuffer, int32_t iCount);
82
83 void FX_Random_GenerateMT(FX_DWORD* pBuffer, int32_t iCount);
84
85 void FX_Random_GenerateCrypto(FX_DWORD* pBuffer, int32_t iCount);
86
87 #ifdef PDF_ENABLE_XFA
88 typedef struct FX_GUID {
89 FX_DWORD data1;
90 FX_WORD data2;
91 FX_WORD data3;
92 uint8_t data4[8];
93 } FX_GUID, *FX_LPGUID;
94 typedef FX_GUID const* FX_LPCGUID;
95 void FX_GUID_CreateV4(FX_LPGUID pGUID);
96 void FX_GUID_ToString(FX_LPCGUID pGUID,
97 CFX_ByteString& bsStr,
98 FX_BOOL bSeparator = TRUE);
99 #endif // PDF_ENABLE_XFA
100
101 template <class baseType>
102 class CFX_SSortTemplate {
103 public:
ShellSort(baseType * pArray,int32_t iCount)104 void ShellSort(baseType* pArray, int32_t iCount) {
105 FXSYS_assert(pArray && iCount > 0);
106 int32_t i, j, gap;
107 baseType v1, v2;
108 gap = iCount >> 1;
109 while (gap > 0) {
110 for (i = gap; i < iCount; i++) {
111 j = i - gap;
112 v1 = pArray[i];
113 while (j > -1 && (v2 = pArray[j]) > v1) {
114 pArray[j + gap] = v2;
115 j -= gap;
116 }
117 pArray[j + gap] = v1;
118 }
119 gap >>= 1;
120 }
121 }
122 };
123
124 #endif // CORE_INCLUDE_FXCRT_FX_EXT_H_
125